Real time monitoring of ship cargo

Real-time monitoring of shipments

[0001] Cross-reference of related applications

[0002] This application is a non-provisional application of US Patent Application No. 61/312,632 named "REALTIME MONITORING OF SHIP CARGO" filed on March 10, 2010 and requires the patent The rights and interests of, the content of which is incorporated here by reference for all purposes.

[0003] Background

[0004] The use of traditional modular transportation containers has revolutionized the transportation industry. Modular transport containers, often referred to as intermodal containers, cargo containers, or simply containers, are reusable containers that can be used to transport products or raw materials from one place to another. Containers can be called intermodal containers because they can be transported in many different ways. For example, containers can be transported by ship, rail, road, or any combination thereof.

[0005] The container is made of durable material, such as metal, thereby providing a reusable container that can withstand the harsh conditions associated with transportation. Generally, several standardized size containers are available. Several common sizes of containers include 20, 40, and 53 foot versions. Generally speaking, the exact size and form factor of the container are defined by standardization organizations, such as the International Organization for Standardization (ISO), International Road Transportation (TIR), and American Highway Association (AAR) standards. Since the container is of standard size, the complexity of handling the container is greatly reduced. For example, cranes or forklifts used to move containers no longer need to be adjusted to engage containers of different sizes. The handling device can be optimized to handle a limited number of standard size containers.

[0006] Since the size of the container can be standardized in a variety of transportation modes, when the transportation mode changes, it is no longer necessary to carry and reload goods from the container. Standardized containers can arrive via ships, be loaded on trains, and then be delivered via trucks to the final destination. Throughout this process, the goods in the container never need to be removed from the container. Since the container is of standard size, each transportation mode can be designed to operate standard size containers.

[0007] For many different types of goods, there are dedicated modular shipping containers. For example, there are tank containers for transporting liquids. Although containers can be specified to hold specific types of goods, it should be understood that the overall size and form factor of dedicated containers are still the same as non-dedicated containers. Therefore, there is no need to adjust container handling equipment when handling special containers. From the perspective of container handling equipment, all containers are handled exactly the same way, regardless of the type of cargo in the container.

[0008] Another example of a dedicated container is a refrigerated shipping container, often referred to as a refrigerated container, or simply a refrigerated container. Refrigerators, as the name implies, are used where goods must be maintained at a certain temperature and/or humidity, which is generally lower than room temperature. In some cases, the required temperature may be higher than the ambient temperature. In either case, the term reefer as used in this disclosure refers to a temperature and/or humidity controlled container, regardless of whether the container is heated or cooled.

[0009] Reefers, like all modularized containers, are designed to match the size and form factor defined by the organization for standardization. Therefore, the reefer can be handled by the same handling equipment used to move general containers. However, reefer containers present additional challenges that standard containers do not. For example, goods shipped in a reefer generally need to be maintained within a specific range of temperature and/or humidity. If the temperature and/or humidity are outside this range, the goods will become unusable even for a short period of time. For example, if the temperature exceeds a predetermined threshold, the food being shipped in the refrigerator can be destroyed.

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[0010] Therefore, during the transportation of the refrigerated container, it is necessary to ensure that the refrigerated container maintains a temperature and/or humidity within a specific range. Any abnormal deviations in the temperature and/or humidity range within the container should be overcome as quickly as possible to prevent damage to the refrigerated container cargo. The various embodiments of the present invention solve these and other problems individually or collectively.

[0011] Brief description

[0012] The remote monitoring and control of the internal environment of a refrigerated shipping container is described. The communication and monitoring equipment is coupled to the data communication port of the controller of the refrigerated shipping container. The device can receive environmental data directly from the controller without installing additional equipment in the refrigerated shipping container, and transmit the environmental data to a remote site. The device can also receive data from a remote site to control the operation of the refrigerated shipping container, and send this control data to the controller of the refrigerated shipping container through the data communication port.

[0013] In one embodiment, a device for communicating with a refrigerated shipping container is disclosed. The device may include: a power interface coupled to a power source to provide power to the device; a data interface coupled to a data communication port located on the refrigerated shipping container, configured to communicate with a controller of the refrigerated shipping container; coupled to a transmitter And a control circuit configured to receive power from the power interface, receive data associated with the refrigerated shipping container from the data interface, and use the communication interface to transmit data associated with the refrigerated shipping container.

[0014] In one aspect, the data associated with the refrigerated shipping container includes the internal temperature of the refrigerated shipping container. In another aspect, the data associated with the refrigerated shipping container includes other operating parameters associated with the refrigerated shipping container. In yet another aspect, the power supply coupled to the power interface also provides power to the refrigerated shipping container.

[0015] In yet another aspect, the device may include: a communication interface coupled to the receiver; and a control circuit, further configured to receive control data from the communication interface to change the operation of the controller of the refrigerated shipping container, and through The data interface transmits the control data to the controller of the refrigerated shipping container. In one aspect, the transmitter is a satellite transmitter. In yet another aspect, the data associated with the refrigerated shipping container is received from the controller of the refrigerated shipping container and received through a data interface. In yet another aspect, the device is physically remote from the internal cargo portion of the refrigerated shipping container. In yet another aspect, the internal temperature of the refrigerated shipping container is measured by the controller of the refrigerated shipping container.

[0016] In yet another aspect, the control circuit is further configured to: identify a communication protocol used by the controller of the refrigerated shipping container; and use the identified communication protocol to communicate with the controller of the refrigerated shipping container through the data interface.

[0017] In another embodiment, a method for communicating with a refrigerated shipping container is disclosed. The method may include: receiving data associated with the frozen shipping container from the controller of the frozen shipping container; determining with a processor whether the data associated with the frozen shipping container should be transmitted to the receiving site; and based on the It is determined to transmit the data associated with the refrigerated shipping container to the receiving site.

[0018] In one aspect, the step of determining whether the data associated with the refrigerated shipping container should be transmitted to the receiving site includes: determining whether it is currently time for periodic reporting. In another aspect, the step of determining whether the data associated with the refrigerated shipping container should be transmitted to the receiving site includes: determining whether the data associated with the refrigerated shipping container is outside a predefined range. In one aspect, the data associated with the refrigerated shipping container includes the internal temperature of the refrigerated shipping container. In another aspect, the data associated with the refrigerated shipping container includes operating parameters of the refrigerated shipping container.

[0019] In yet another aspect, the method further includes: receiving control data, the control data being used to control the refrigerated shipment

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The operation of the container; and sending the control data to the controller of the refrigerated shipping container, wherein the controller of the refrigerated shipping container changes the operation of the refrigerated shipping container based on the control data. In one aspect, the control data includes the temperature set point of the refrigerated shipping container. Also disclosed is a non-transitory computer readable medium containing instructions that cause a processor to perform the steps of the method.

[0020] In yet another embodiment, a system for communicating with a refrigerated shipping container is disclosed. The system also includes: a monitoring and communication controller configured to communicate with the controller of the refrigerated shipping container to receive data associated with the refrigerated shipping container, and send the data associated with the refrigerated shipping container to the data server computer And a data server computer configured to receive data associated with the refrigerated shipping container from the monitoring and communication controller, and send the data associated with the refrigerated shipping container to the user.

[0021] In one aspect, the system may further include: a data server computer further configured to receive control data from the user for controlling the operation of the refrigerated shipping container; and the monitoring and communication controller is further configured to The control data is received from the data server computer and the control data is transmitted to the controller of the refrigerated shipping container, wherein the controller of the refrigerated shipping container changes the operation of the refrigerated shipping container based on the control data.

[0022] These and other embodiments of the present invention will be described in more detail below.

Description of the drawings

[0023] FIG. 1 shows a high-level diagram of a system used by an embodiment of the present invention.

[0024] FIG. 2 shows an exemplary monitoring and communication device.

[0025] FIG. 3 shows the controller installed in the refrigerator.

[0026] FIG. 4(ad) shows a screenshot of an exemplary web page.

[0027] FIG. 5 shows an exemplary shipper interface.

[0028] FIG. 6 shows the main port (Homeport) when the SMARTemp tag is activated _o

[002] Figure 7 shows a detailed view of a single container.

[0030] FIG. 8 shows a display of operating parameters associated with the shipping container.

[0031] FIG. 9 shows a flowchart according to an embodiment of the present disclosure.

[0032] FIG. 10 shows an alternative embodiment of the present invention.

[0033] FIG. 11 shows a screen used to update the operating parameters of the reefer.

[0034] FIG. 12 shows a flowchart according to an embodiment of the present disclosure.

[0035] FIG. 13 is a block diagram of a computer device.

[0036] FIG. 14 shows a chart display of a single container.

Detailed ways

[0037] Embodiments of the present invention provide real-time remote temperature and humidity monitoring for environmentally sensitive goods being transported via refrigerated shipping containers. Regardless of the location of the refrigerated shipping container, real-time acquisition of temperature and humidity information provides more visibility and protection capabilities on environmentally sensitive goods. Before the environmentally sensitive goods are damaged, the shipper can immediately resolve any deviations in the ideal temperature and humidity of the goods. The embodiment of the present invention continuously monitors the temperature and humidity of the refrigerated shipping container and can report any out-of-range conditions to a remote monitoring site via various communication facilities.

[0038] In addition to reporting out-of-range conditions, embodiments of the present invention can also periodically report temperature and humidity information

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To remote monitoring sites. Such periodic reports allow the shipper to continuously track the environmental status of the goods being shipped. The periodic report can be adjusted to comply with any applicable regulations related to the monitoring frequency of environmentally sensitive goods during the entire refrigerated shipping container transportation process. Such periodic monitoring can reduce or eliminate the need to download shipping temperature and humidity data from the refrigerated shipping container for post-shipment confirmation.

[003] Further, real-time monitoring is not limited to only temperature and humidity information. Since the embodiment of the present invention directly interacts with the refrigerated shipping container, any operational data related to the refrigerated shipping container can also be monitored and sent to a remote monitoring site periodically or when it is out of range. Operational data may include information such as errors or alarms generated by the refrigerated shipping container itself.

[0040] In some embodiments of the present invention, remote control of the refrigerated shipping container is also provided. The shipper can remotely modify any operational characteristics of the refrigerated shipping container without physically touching the container. When the refrigerated shipping container is halfway through transportation, operating characteristics such as temperature and humidity can be set without the intervention of the transportation personnel.

[0041] All the above-mentioned advantages of the embodiments of the present invention are realized without the need to make any permanent changes to the refrigerated shipping container itself. Since the embodiments of the present invention directly interact with the refrigerated shipping container, there is no need to install such things as temperature and Equipment such as humidity probes. All the necessary information can be obtained from the refrigerated shipping container itself. Therefore, without changing the container permanently, the shipper can easily install and remove the embodiments of the present invention from the refrigerated shipping container, which is advantageous when the shipper is not the actual owner of the shipping container . Further, it is advantageously not necessary to install an embodiment of the present invention on every refrigerated shipping container used by the shipper, because the present invention can be moved from one container to another as needed.

[0042] Hereinafter, these and other advantages of the present invention will be described in further detail with reference to FIGS. 1-14.

[0043] Before discussing specific embodiments of the present invention, a further description of the term "operating parameters" may be provided to better understand the embodiments of the present invention. As used herein, "operational parameters" can refer to any aspect related to the operation of shipping containers. Generally, operating parameters will refer to the environmental aspects of the shipping container, while other embodiments may refer to other aspects. Examples of operating parameters may include, but are not limited to, temperature, humidity, air pressure, lighting, and air quality (eg, a mixture or presence of specific gases). Operating parameters can also refer to the status of the components of the shipping container, such as compressor status, cooling fan, coolant flow rate, coolant temperature, power supply voltage, temperature and humidity set points, cargo door status, or other similar aspects.

[0044] The operating parameters can be expressed in any way. In some cases, operating parameters can be represented by values that are generally based on numbers. For example, temperature can be expressed in terms of various metrics, such as Fahrenheit, Celsius, Kelvin, or any other temperature metric. In still other cases, status indicators can be used to indicate operating parameters. Such a status indication can identify whether the operating parameter is in an error state. Operating parameters above or below a certain set value are examples of error conditions. A door in an open state is another example of an error state. The derivative of the operating parameter may depend on the operating parameter in any suitable way. For example, the data interface can read operating parameters (such as temperature) in Celsius and then transmit the same operating parameter in Fahrenheit.

[0045] In some cases, the operating parameter may represent the current value of the operating parameter. For example, the temperature of the cargo can represent the temperature value measured from the container. Optionally, the operating parameter may represent a desired value, such as a temperature value set by the shipper to define the temperature at which the container should be maintained.

[0046] Exemplary shipping operations

[0047] In an exemplary reefer shipping operation, a shipper who needs to transport goods that require temperature and humidity control will notify the freight forwarder. If the shipper does not have a reefer, the freight forwarder can arrange for an empty reefer to be sent to the shipper. In some cases, the freight forwarder may provide an empty reefer that is owned by the freight forwarder. In other cases, the reefer can be

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Owned by the shipping line (e.g., ship, train, truck) involved in transporting the reefer. It should be understood that the actual ownership of the reefer can be one of many different parties. The embodiments of the present invention advantageously allow remote monitoring of the refrigerated box without any permanent changes to the refrigerated box itself. Since no permanent changes are required, it is generally not necessary to obtain a license from the owner of the refrigerated container to utilize the embodiments of the present invention.

[0048] The shipper can load the goods to be transported into the reefer. The shipper can set the desired temperature and/or humidity of the reefer, and then notify the freight forwarder. The freight forwarder will then arrange for the reefer to be transported to the desired destination. In many cases, the shipper does not know, and actually does not care, the mode of transportation used to transport the reefer to the desired destination. Any combination of ships, railways, or roads is fine.

[0049] A problem that may arise in the operation of a general reefer is that once the container leaves the shipper, the shipper no longer has the ability to directly detect or change the temperature and/or humidity or other parameters in the container. If there is a failure in the reefer, the first indication may be when the container is opened at the destination and the cargo is found to be damaged or otherwise unsatisfactory. Many refrigerators have the ability to record temperature and/or humidity at various time intervals, and the historical data can be obtained through a data interface located on the refrigerator. However, this historical data can only be used to show when a failure has occurred, and is of no help in mitigating the fact that the goods cannot be reused.

[0050] In some cases, when the reefer is in transit, personnel are assigned to periodically monitor the reefer to record the temperature and/or humidity reported by the reefer. If an out-of-range situation is found, personnel can take corrective action. However, even in this case, the failure of the refrigerated box was not discovered until the time of periodic monitoring occurred. If the monitoring period is a few hours, the cargo may be damaged before the reefer failure is noticed. Furthermore, in some cases, it may not be possible to perform routine manual monitoring of the reefer. For example, when sailing on a ship, reefer containers are generally loaded on top of a container stack to provide sufficient cooling for refrigerated components. In rough seas, for safety reasons, it may not be possible to send people to the location of the reefer.

[0051] At present, there are some attempts to remotely monitor the temperature and/or humidity of the refrigerator, but each of these attempts has great limitations. For example, there is a monitoring unit that uses power line communication (PLM) to read the temperature and/or humidity of the refrigerated container while the ship is sailing. However, this type of monitoring assumes that the reefer owner (who is not necessarily the shipper) has installed the appropriate equipment. This also requires transportation of the reefer container via a transportation method that supports PLM technology. Since the shipper does not necessarily control the specific form of transportation or its monitoring capabilities, a solution that relies on the ability to exist outside the reefer is not preferred.

[0052] Other attempts to remotely monitor the temperature and/or humidity contained in it require modifications to the refrigerator. For example, it may be required to install temperature and humidity probes. As mentioned above, in many cases the actual owner of the reefer is not the shipper. The modification of the reefer requires the permission of the owner of the reefer, and the owner may be unwilling to perform such authorization.

[0053] The embodiments of the present invention overcome these and other disadvantages of the prior art, and will be described in detail with reference to FIGS. 1-14.

[0054] FIG. 1 shows a high-level diagram of a system used by an embodiment of the present invention. The system includes a container 102, a power supply 104, a monitoring and communication controller 106, a configuration computer 108, a satellite 110, a ground station 112, a data server 114, a communication network 116, and a user computer 118.

[0055] The container 102 may be a refrigerated shipping container, which may be referred to as a refrigerated container or a refrigerated container. A general refrigerator consists of two main parts. The first is the container part 102(c), where the actual goods being shipped are stored. Generally, the container part 102(c) can be accessed through a set of doors (not shown) through which goods can be loaded or unloaded. The container part 102 (c) is generally constructed of rigid materials (such as metal) to withstand the harsh environment of shipping and stacking. Container part 102 (c)

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The sidewalls of the container are generally an insulating layer, so that the temperature in the container portion can be maintained by the reefer unit 102(a), which will be described below.

[0056] The container part 102(c) will generally be equipped with several different types of sensors. At least, the container part 102(c) may be equipped with a temperature sensor to measure the ambient temperature in the container part. The container part 102(c) may also be equipped with a temperature sensor to measure the temperature of the air provided by the reefer unit 102(a), which is also referred to as supply temperature. There may also be an additional temperature sensor for the air returned to the reefer unit 102(a) after circulating in the container (also referred to as return temperature).

[0057] In addition to temperature sensors for sensing the ambient temperature within the container portion 102(c), there may also be temperature sensors that can be inserted into the cargo being shipped. Depending on the goods being shipped, regulations may require not only the temperature in the container to be measured, but also the temperature in the goods. For example, the US Drug Administration (USDA) has regulations for the shipment of certain goods, such as food and pharmaceutical goods, which require monitoring of the internal temperature of the goods themselves.

[0058] In addition to temperature sensors, there may be many other types of sensors in the container portion 102(c). Humidity sensors, brightness sensors, motion sensors, or other types of sensors may also be included in the container portion 102(c). There may be sensors to indicate whether the door to the container section 102(c) is open or closed, the physical orientation of the container, or many other sensors present in association with the container section. Although any number of sensors designed to monitor any number of physical conditions in the container portion 102(c) are described, for the purpose of simplifying the explanation, the present disclosure will only refer to temperature. However, those skilled in the art, with the teachings of the present disclosure, can understand that many different physical conditions can also be monitored.

[0059] The above-mentioned sensors are generally connected to the refrigerator unit 102(a). It should be understood that the sensors are part of the original design of the refrigerated shipping container 102. The refrigerated shipping container 102 is specifically designed to contain these sensors. Any leads or other connections between the sensor and the reefer unit 102(a) are designed to not compromise the physical integrity of the container section 102(c). In other words, the aforementioned sensors do not require any modification to the container part 102(c) to utilize the embodiments of the present invention, because these sensors are the original equipment of the refrigerated container 102.

[0060] Unlike some previous attempts for remote temperature and humidity monitoring, embodiments of the present invention advantageously utilize sensors that have been installed in the refrigerated shipping container 102. Therefore, embodiments of the present invention are not trapped by the fact that additional sensors cannot be installed because the shipper (or the party who wants to monitor the container) does not actually own the container. The embodiments of the present invention advantageously do not need to install additional sensors in the container 102 or drill holes in the container 102 to accommodate the lead wires of the additional container. Further, the embodiment of the present invention advantageously reads the temperature from the same source as the reefer unit 102(a), thus ensuring that there is no contradiction between the reefer unit's reading and the remotely monitored temperature.

[0061] The second part of the container 102 may include a reefer unit 102(a) that controls the environment of the container part 102(c). For example, the reefer unit 102(a) may control the temperature and/or humidity in the container portion 102(c). Therefore, the container 102 may be an environmentally controlled container. The reefer unit 102(a) is generally installed on the container part or assembled to the container part, so that the overall form factor of the combined unit conforms to the standardized shipping container. Compliance with the form factor of standardized shipping containers allows reefer containers to be moved in the same way and using the same handling equipment as non-environmentally controlled containers.

[0062] The reefer unit 102(a) may include components that physically regulate the air in the container portion 102(c). The reefer unit 102(a) generally includes electromechanical components, such as compressors, condensers, fans, or heating components, which are used to physically regulate the container environment. The electromechanical components necessary for adjusting the air in the refrigerated container 102 are known to those skilled in the art, and it is not necessary to describe these components in detail.

[0063] The reefer unit 102(a) may further include a reefer controller 102(b). Reefer controller 102 (b)-generally includes

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The control logic controls the operation of the electromechanical components of the reefer unit 102(a). The reefer controller 102(b) may be responsible for determining when it is necessary to activate the adjustment component. For example, the aforementioned temperature sensor is generally connected to the refrigerator controller 102(b). In many cases, the reefer controller 102(b) allows the input of temperature and/or humidity set points, and the reefer controller maintains the container portion at the desired temperature and/or humidity. In some cases, the reefer controller 102(b) allows a temperature and/or humidity range to be set, and if the temperature and/or humidity exceeds this range, the reefer controller will activate the regulating device.

[0064] The reefer controller 102 is generally a complex electronic device product that contains many of the same capabilities of a general purpose computer. For example, the reefer controller 102(b) may include a memory that can record a history of measured temperatures. The reefer controller 102(b) may also monitor the operating parameters of the electromechanical adjustment components. Various operating parameters such as compressor status, cooling fan, coolant flow rate, coolant temperature, power supply voltage (described below), temperature and humidity set points, cargo door status, and other operating parameters can also be stored. The reefer controller 102(b) may also record any faults or alarms that occur in the reefer unit 102(a) to the memory.

[0065] The reefer controller 102(b) will generally include an interface panel, through which the operator can view and set various operating parameters of the refrigerated container. For example, the reefer controller 102(b) may include a display that indicates the current temperature in the container portion 102(c). The interface panel may also include controls to allow the operator to set the operating temperature of the refrigerated container and view the currently set temperature. The display panel can also present any faults or alarms existing in the refrigerated container 102 to the operator. The operator can also control the operation of the refrigerated container through the interface panel, such as initiating a defrosting sequence, opening or closing the refrigeration equipment, and resetting or clearing alarms and faults. The operating capabilities of the reefer controller are known to those skilled in the art. An exemplary interface panel of the reefer controller is illustrated in FIG. 3.

[0066] The reefer controller 102(b) may include a data communication port, such as an RS232 serial interface, which allows the operating data of the container 102 to be read by a computer or other suitably equipped equipment. Any suitable data interface, such as Ethernet, FireWire, USB, etc. can also be used instead of RS232 connection. It should be understood that the reefer controller 102(b) includes a data interface that allows communication with external systems. Generally, the external system may be a computer, such as a laptop computer (not shown) that may be used to interact with the reefer controller 102(b). Through this data interface, the laptop computer can control all the functions of the refrigerated container 102 in the same way as the operator uses the interface panel to control the refrigerated container.

[0067] The data interface may allow operating data, such as the current set temperature, the current temperature inside the container, the door status, the alarm and fault status of the regulating device, and any other data related to the operation of the refrigerated container, to be displayed on the laptop On the computer. The data interface also allows the operating parameters of the refrigerated container to be updated from the laptop computer. Control data, such as temperature set points, resetting of alarms, and other such parameters can be entered into the laptop computer. Then the control data can be transmitted to the reefer controller 102 (b) through the data interface, and the reefer controller will change the operation of the refrigerated container based on the control data. In short, through the data interface, all the functions obtained from the interface panel, and more functions, can be obtained from the external system.

[0068] The refrigerator box unit 102(a) may be connected to a power source 104. The power supply 104 provides power for the operation of the reefer unit 102(a). The power source may include a shipboard power source 104(a) provided by the ship that transports the container 102. The power source may also include a yard power source 104(b), which may include any power source provided by the location where the container is currently located. The power source may also include a generator power source 104(c), which includes any power source associated with the container 102. In some cases, the generator power source 104(c) may come from a generator attached to the container.

[0069] The reefer generally includes power from an external source for operation. For example, a refrigerated container traveling on a ship can receive power from a shipboard power source. The refrigerated box located in the field can receive power from the field power source. In some cases, the refrigerator box may receive power from a generator (also referred to as a generator-set). The generator set can be located near the reefer, or in some cases

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Installed in the freezer itself. A generator set generally includes an internal combustion engine coupled to a generator for generating electric power. The specific power source of the reefer is relatively unimportant, except to note that the reefer unit 102(a) requires a power source for operation.

[0070] The system may also include a monitoring and communication controller 106, which is also referred to as a controller. The controller 106 may include a power interface 106(a) that is coupled to the power source 104 and receives power from the power source 104. In some cases, the Y-connector is used to route the reefer unit 102(a) and the controller 106. It should be understood that as long as the reefer unit 102(a) receives power from any power source, the controller 106 will also receive power. In some embodiments, the controller 106 may also have an auxiliary power source, such as a battery (not shown), to provide power when the reefer unit 102(a) is not receiving power.

[0071] The power interface 106(a) may include suitable components, such as a transformer, a regulator, and a rectifier, to adjust the power provided by the power supply 104 to a form required by the controller 106. For example, the refrigerator is generally powered by 24 volt AC, while the controller 106 may require 5 or 12 volt DC. The power interface 106 (a) can perform any necessary conversion. In one embodiment, the power interface 106(a) can obtain 18-36 volt AC and convert it to the 5 volt DC required by the monitoring and communication controller 106. It should be understood that depending on the requirements of the power supply and the monitoring and communication controller 106, the power interface 106(a) can be customized.

[0072] The controller 106 may also include a data interface 106. The data interface 106(b) can also be operatively coupled to the reefer controller 102(b) to read the temperature and humidity of the container 102, or other operating data. The data interface 102(b) can also be used to send control data to the reefer controller 102(b). As mentioned above, the reefer controller 102(b) may include a data communication port to allow access to external systems. The monitoring and communication controller 106 as an external system interacts with the refrigerator controller 102 through the data interface 106.

[0073] Although the data interface 106(b) and the data interface on the reefer controller 102 can use standard protocols at the lower communication layer, such as RS 232, FireWire, USB, etc., the protocol used at the application layer is generally composed of a refrigerated container By the makers. In other words, although different reefer manufacturers may use the same type of interface (eg, RS232), the actual format of the information provided from the reefer controller 102(b) may be different between manufacturers. The specific format of the control data for changing the operation of the reefer controller 102(b) may also be different between different reefer manufacturers.

[0074] Many reefer manufacturers will provide specific protocols used by their reefers if requested. Although, even in the case that the manufacturer is unwilling to provide the protocol, it can be obtained through other methods, such as analyzing the communication from the reefer data interface and reverse engineering the protocol. However, for the purposes of this disclosure, it is assumed that specific protocols from different manufacturers that are used to communicate with the reefer are known.

[0075] The data interface 106 can also provide an interface for connecting to the configuration computer 108. The configuration computer 108 can be used to program various functions of the controller 106. For example, the controller 106 may need to be configured to properly communicate with the reefer controller 102(b). As mentioned above, each reefer manufacturer can use its own protocol to communicate using the reefer data interface. By configuring the computer 108, the controller 106 can be provided for the type of reefer to which the controller 106 is connected, so that the controller can use the correct protocol when communicating with the reefer.

[0076] However, it should be understood that configuring the computer 108 is not the only way in which the correct protocol can be determined. In some embodiments, the controller 106 may attempt to communicate with the reefer 102 by cycling through protocols used by different reefer manufacturers. If the controller 106 does not receive the response expected according to the currently tested protocol, the controller may determine that the wrong protocol is used. The controller 106 can then try to communicate using a different protocol and repeat the process. The controller 106 will finally try the correct protocol, and can establish communication or can determine that communication cannot be established.

[0077] The configuration computer 108 may be used to configure the satellite transmitter 106(e) for appropriate communication. Although FIG. 1 shows a satellite 110 communication link, it should be understood that many other communication facilities may be used with embodiments of the present invention. The optional communication method will be described below. Regardless of the specific type of communication, the configuration computer 108 can be used to configure the controller 106 for appropriate communication.

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letter. For example, in the case of satellite communication, the controller may need to be configured by appropriate frequency and channel allocation to communicate with the satellite 110.

[0078] The controller 106 may be configured to report temperature and/or humidity and operating parameters periodically, or when certain thresholds are exceeded. The configuration computer can be used to set periodic reporting intervals or thresholds. It should be understood that the configuration computer 108 only needs to initially configure the controller. Once the initial configuration is complete, the configuration computer 108 can be disconnected and the controller can operate autonomously.

[0079] The controller 106 may also include a processor 106(c) coupled to a non-transitory, tangible, computer-readable medium 106(d). The medium 106(d) may store a set of instructions executed by the processor to realize the functions of the controller 106. It should be understood that the processor 106(c) and the medium 106(d) are intended to describe general control circuit functions, and are not limited to embodiments with separate processing and storage components. The processor 106(c) is intended to describe any form of control circuit that can be used to implement embodiments of the present invention.

[0080] In one embodiment, the processor 106(c) is an MSP 430 microcontroller from Texas InstrumentsTM. In various embodiments, the processor is an 80188 processor from IntelTM. Optional processors are available from AMDTM. It should be understood that the specific control circuit used by the controller 106 is generally not important, as long as the control circuit can achieve the capabilities described in this publication.

[0081] The processor 106(c) may be programmed to periodically read temperature and/or humidity information and other operating parameters from the refrigerator controller 102(b) through the data interface 106. In some embodiments, the processor 106(c) is programmed to update spontaneously from the reefer controller 102(b). The processor may be programmed to periodically report the operating parameters of the reefer to the remote server 114 (described below). The processor can also be programmed to immediately report the operating parameter once a situation outside the range of any operating parameter occurs.

[0082] The processor 106(c) may also be coupled to the satellite transmitter 106(e) via a communication interface. The processor 106(c) may send temperature and/or humidity readings and operating data to the satellite transmitter 106(e). In some embodiments, the satellite transmitter 106(e) is incorporated in the controller 106, while in other embodiments, the satellite transmitter 106(e) may be a stand-alone device that interacts with the controller 106. For example, in one embodiment, the satellite transmitter 106(e) is an IridiunT 9601SBD transceiver. The 9601 transceiver is a small, low-cost OED module manufactured by IridiumTM, which is used by IridiumTM registered participants to integrate into various applications using the Iridium Short Burst Data Service. Can be used for monitoring, alerting, and tracking.

[0083] Although the above description only illustrates the transmitter, it should be understood that this is for the purpose of clarity of description. Transceivers, as the name implies, also include receivers for receiving data from remote locations. The operation of the controller 106 when the receiver is used is further described below. However, it should be understood that embodiments of the present invention may operate in a transmit-only mode.

[0084] The satellite transmitter 106(e) may receive temperature and/or humidity readings and other operating parameters and transmit this information to the satellite 110 orbiting the earth. The satellite 110 may then relay the reading to the ground station 112. The ground station 112 may be coupled to the data server 114. The communication between the satellite transmitter 106(e) and the ground station 112 is conventional and therefore will not be described in detail.

[0085] Although the foregoing description is in the form of a satellite communication system, those skilled in the art, with the teachings of this disclosure, will understand that the embodiments of the present invention are not limited to satellite communication. Other possibilities, such as WiFi, WiMax, 3G cellular, 4G cellular, LTE, and other forms of wireless communication can also be conceived. The particular form of communication used may depend on the mode of transportation used. For example, the refrigerated container 102 on a ship in the ocean will generally need to use satellite communication because there is no other form of

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Communication is available. The refrigerated container 102 transported by rail can access any or all of the above exemplary communication systems.

[0086] In some embodiments, the controller 106 may be equipped to communicate using more than a single communication form. For example, the controller can be equipped with a satellite transmitter and a 3G cellular transmitter. The controller 106 can be programmed to use the most cost-effective communication available. Since satellite communications are generally more expensive than cellular communications, the controller 106 can be configured to use 3G cellular transmitters when 3G is available (e.g., when the container is on land), and only when 3G cellular communications are not available (e.g., when Use satellite transmitter 106(e) when the container is at sea. Under the teachings of the present disclosure, other combinations of communication facilities are obvious to those skilled in the art.

[0087] The data server 114 may receive operating parameters and store the operating parameters in a database (not shown). In addition, the data server 114 may provide one or more web pages in which temperature and/or humidity readings can be viewed. These web pages can be accessed through the Internet 116 using the user computer 118. A browser application running on the user's computer 118 may be used to display web pages. In some embodiments, the data may be sent to the user computer 118 in other suitable formats, such as XML files or spreadsheet files. Any suitable form of transmitting data to the user computer 118 is contemplated.

[0088] In operation, the container 102 may be filled with cargo requiring temperature and/or humidity control. The controller 106 will periodically read the temperature and/or humidity and other operating parameters through the refrigerator controller 102. In some embodiments, readings are taken continuously, while in other embodiments, readings are taken every few seconds, minutes, every few hours, or a combination thereof. The controller 106 can then compare the reading with the parameters configured by the configuration computer 108 to determine whether the reading should be transmitted to the satellite transmitter 106 (e). In some embodiments, the reading is sent periodically, such as at least every second, every minute, every hour, every 2 hours, every 4 hours, or once a day. The interval of periodic reports can be completely configured by the user. In some embodiments, the controller 106 may include a real-time clock (not shown) so that the controller may be configured to report at a specific absolute time of day. For example, at the beginning, middle, or end of each hour, or at a specific time of day. In addition, the controller 106 can report readings in the event of an out-of-range condition. For example, if a specific temperature set point is desired, temperature readings outside the configured range can be reported immediately. For example, temperature readings that are at least 1 degree, 2 degrees, 5 degrees, or 10 degrees outside the configured range can be reported immediately.

[0089] If the controller 106 determines that temperature and/or humidity readings or other operating parameters should be reported, the data is transmitted to the satellite transmitter 106(e). The satellite transmitter 106(e) transmits the data to the satellite 110, and the satellite 110 then relays the data to the ground station 112. The ground station 112 then transmits the data to the data server 114. The data server 114 may present data to the user computer 118 through a web page. Hereinafter, the web page will be described in detail with reference to Figure 4(ad) and Figures 5-8.

[0090] Embodiments of the invention provide several advantages. First, since the controller 106 and the reefer unit 102(a) are powered by the same power source, as long as the reefer unit 102(a) has a power source, the controller 106 will be in operation. In practice, this means that shippers no longer rely on facilities provided by ships, venues, or other transportation devices to support remote temperature and/or humidity monitoring. In other words, if the reefer box 102 is in operation, no matter where it is, the controller 106 will also be in operation. In addition, since the controller 106 is stand-alone and independent, and does not require any permanent changes to the reefer box 102, the shipper does not rely on the owner of the reefer box to install any additional equipment. The shipper may not rely on the reefer owner to install the controller.

[0091] Further, since the controller can communicate with reefer boxes from different manufacturers, the shipper does not need to maintain different controllers for different types of reefer boxes. The same controller can be removed from one reefer and installed on different reefers, thus minimizing the cost associated with providing different controllers for each reefer manufacturer. Additionally, embodiments of the present invention advantageously allow the shipper to determine the reporting interval. Therefore, the shipper no longer depends on the manual operation of the reefer

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The shipper has no control over these readings.

[0092] FIG. 2 shows an exemplary monitoring and communication device. All the components of the controller 106 as described with reference to FIG. 1 may be contained in the housing 202. The housing can be made of durable materials that can withstand the potentially harsh environmental conditions experienced by the reefer during transportation. For example, the housing may be made of impact resistant material. During reefer container handling operations, such as loading or carrying from a ship, truck, or train, the housing 202 can protect the controller from undesirable damage. The housing 202 may be watertight, because there is always the possibility that the reefer will be exposed to severe weather during transportation.

[0093] Several cables extend from the housing 202, which can be used to interact with the reefer unit or the outside world. The cable 206 may extend from the data interface 106(b) of the controller to be connected to the data communication port (or any other communication socket or plug) of the reefer controller. The cable 206 may have a connector 205 that is compatible with the connector that forms the data interface of the reefer controller. In some embodiments (not shown), the cable 206 may be equipped with multiple different types of connectors to be compatible with reefer boxes of different manufacturers.

[0094] Also extending from the housing 202 is a power cable 204, such as, for example, a 24 volt, alternating current (VAC) power cable. As described above, power from the controller can be supplied from multiple power sources. The power cable 204 is used to provide the power required for operation of the controller.

[0095] Finally, the antenna 208 can protrude from the housing 202. The antenna is required for wireless communication. The specific type of antenna may depend on the specific communication facility being used. For example, a cellular 3G antenna can be different from a satellite antenna.

[0096] The device shown in FIG. 2 is intended to be exemplary. The various embodiments of the present invention are not limited to the physical configuration described above. For example, in some cases, the power supply 204 and data interface 206 cables may be combined into a single cable, and the antenna may be integrated into the housing 202. Based on the teachings of the present disclosure, those skilled in the art will understand the optional configurations.

[0097] FIG. 3 shows the controller 302 installed in the refrigerator. The controller 302 may be of the type described with reference to FIG. 2. An exemplary reefer controller is shown in FIG. 3. As mentioned above, the reefer controller includes an interface panel that allows the operator to configure the reefer. The operator input panel 304 may allow the operator to input parameters such as temperature and humidity set points and control other functions of the refrigerator. The display 306 may allow the operator to view the current temperature in the reefer container and what the current temperature set point is.

[0098] The alarm indicator 308 can show the operator whether there are any error conditions currently in the reefer. The operation of the reefer controller is conventional and does not need to be described in detail. It should be understood that the controller 302 can be installed on the reefer controller without any permanent modification. The controller is simply connected to the reefer controller via the cable described in FIG. 2 and the housing is fixed to the reefer. Advantageously, no physical changes to the refrigerator are required.

[0099] FIG. 4(ad) shows a screenshot of an exemplary web page. These web pages can be provided by the data server 114. Figure 4 (a) shows an exemplary screenshot showing all containers being monitored according to an embodiment of the present invention. Figure 4 (a) shows some exemplary data that can be displayed, such as shipper ID 402, which identifies a specific shipper, container ID 404, which identifies a specific container, time 406, which indicates the time of the data reading, Temperature 408, which indicates the temperature at the reading time, temperature setting 410, which indicates the temperature set point, humidity 412, which indicates the humidity at the reading time, and humidity setting 404, which indicates the humidity set point. It should be understood that the data shown is only exemplary. Any data provided by the controller can also be displayed.

[0100] FIG. 4(a) shows a web page displaying all data received by the data server 114 at all times. It should be noted that each container can be located anywhere in the world, and all containers do not have to be in the same location. Furthermore, all the containers shown in Figure 4 (ad) may not be part of the same shipment or belong to the same shipper. Figure 4 shows a web page similar to Figure 4(a), except that only a single consignment with ID 416 of 007 is shown

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Human data. In general operation, a portal web page can be used to present shippers to limit the displayed data to only relevant to a specific shipper. Exemplary portals are illustrated in Figures 5-7 and 14. As shown in Figure 4, only the data related to shipper ID 007 is displayed. It can be seen that the shipper has two reefer boxes 418,420 in transit, with IDs 111111 and 222222. Looking at the time interval 422, these two reefer boxes have been configured to report their readings every two hours. Although Figure 4(b) shows data readings at multiple times, in some embodiments, only the final time is displayed.

[0101] FIG. 4(c) shows another exemplary web page. Similar to Figure 4, the data is filtered by individual shipper ID 424, in this case, ID 007. The data is further filtered by a single container ID 426. In this case, it is the ID 111lllo. Figure 4(d) shows the data of a different shipper with an ID 428 of 415. As can be seen from Figure 4(d), this shipper configures the controller 106 to report temperature and/or humidity every 30 minutes 430. In addition, it can be seen from the time 01:07:00432 that the shipper ID415 can configure its controller to report immediately once an out-of-range situation occurs, instead of waiting for the next periodic reporting period. In this way, once an out-of-range situation occurs, the shipper can be notified about the out-of-range situation instead of waiting for the next periodic reporting period.

[0102] Although several exemplary web pages have been described, it should be understood that this is not intended to be limiting. Any additional arrangement of the displayed data is also conceivable.

[0103] FIG. 5 shows an exemplary shipper interface. The web page shown in Figure 5 may be provided by a shipping line that physically transports the refrigerated container. The exemplary web page shown in FIG. 5 is the main port (Homeport) provided by American President Lines (APL), which is the assignee of the present disclosure. Through this main port (Homeport)", individual shippers can track the containers they consign during the entire container transportation process. It should be noted that this tracking is available for both frozen and non-refrigerated containers. The individual shipper has logged in After "Homeport", the shipper can search for the container currently in transit. The search tool 502 is presented to the shipper for use, so as to locate the specific shipment of interest.

[0104] In the screenshot of FIG. 5, the shipper has chosen to search with BL number 504, which identifies a specific shipment. The shipper can then click on each status label 506 to obtain information about the shipment associated with this particular BL number. As shown, the summary tab has been activated. The overview tab shows the entities related to the shipment_OThe basic features of the main ports of the APL are known, and it is not necessary to describe these features in detail because they are known to those skilled in the art.

[0105] FIG. 6 shows the main port (Homeport) when the SMARTemp tag is activated. SMARTempTM is a trademark in the case where an embodiment of the present invention is commercialized. When the SMARTemp 602 tag is activated, it displays information related to the remote monitoring of the refrigerated container. As described with reference to Figure 5, the shipper in Figure 6 searches for a specific BL number. When the SMARTemp tab is activated, the screen shown in Figure 6 is displayed. As shown, this particular shipment includes two different containers 604,606_oThose skilled in the art can understand that any independent transport of goods may require a container to provide sufficient space to transport the goods.

[0106] FIG. 6 also shows at least one temperature set point 608 reported according to an embodiment of the present invention. The display may further include a supply temperature 610, which is the temperature of the cold air leaving the reefer unit and circulating in the container. Also shown is the return temperature 612, which is the temperature of the air returning to the freezer unit after circulation. The date and time 614 are also displayed. Finally, the shipper is given the option 616 to view additional details about the specific reefer.

[0107] FIG. 7 shows a detailed view of a single container. If the user clicks the details button 616, the display shown in FIG. 7 is presented. Through this display, the shipper can obtain more detailed and historical information about the temperature and humidity data, as well as the history of the reported data. As shown, the user is given the option to filter 702 data in a specific time range to limit the displayed data

According to the amount.

[0108] The user is presented with mostly the same information as shown in FIG. 6, but instead of only displaying the last reported value, all the values in the specific time range 702 are displayed. Likewise, the user can see the container ID 704, the set temperature 706, the supply temperature 708, the return temperature 710, and the humidity 712. In addition, the user can view any additional temperature data, such as the measurements 714,716,718 required by the USDA. As shown above, in some shipping situations, the specification requires monitoring the temperature of the actual cargo itself. As shown in Figure 7, for this particular shipment, no such monitoring is required. Each USDA temperature may include the temperature measured in different parts of the cargo. The user can also view the time 720 when each of the different measurements was made.

[0109] In some embodiments, the exemplary shipper interface may provide shippers with information in various formats. For example, one embodiment may allow shippers to view the display of chart information for tracking the containers they ship during the entire container transportation. Such chart information can provide information in a simple and quick way to understand. This may be the case when the exemplary shipper interface provides chart information in a format showing operating parameter values that change over time.

[0110] FIG. 14 shows a geographic location display 1400 of the operating parameters of each container. For example, by logging into the main port interface and then searching for the container in transit and then selecting the specific container of interest, the shipper can view such a graphical display. When the container of interest is selected, the main port interface can provide the display of information about the container in the first format (for example, the information displayed in text, see Figure 7). Optionally, the shipper can choose to view information about the container in the second format (eg, chart information). The graph display 1400 shown in FIG. 14 is an example of graph information. As shown, the graph display 1400 is a two-dimensional graph showing operating parameters as a series of connected data points over a time period. The graph display 1400 shows the series 1402 and 1404 over the same time period. The series 1402 represents various values of "return air" (eg, the temperature of the air returning to the reefer after circulating through the container) that changes over time. The series 1404 represents various values of "supply air" (eg, the temperature of the air supplied to the container by the reefer unit) over time. Depending on the embodiment, the series 1402 and 1404 can be visually distinguished from each other, for example by using different colors, different line segment forms, or any other visual distinction.

[0111] The chart shown in FIG. 14 is provided for illustrative purposes, and should not be understood as a limitation to other embodiments. For example, according to other embodiments, the graph display may display more or less information. In one way, the chart display may show additional or fewer data series. The graph display may show the humidity time series, the cargo temperature series, or any other series based on the data described herein. Further, the graph display may show a data series that varies with one or more operating parameters. Such a data series may, for example, show the rate of change of an operating parameter (e.g., return air or USDA temperature value) with another operating parameter (e.g., supply air temperature value). The slow rate of change can be a signal of operational problems with the container, which can be caused by various factors. For example, the location of the container, damage or leakage of the container, or improper operation can make it difficult to maintain an ideal operating environment for the reefer. In one way, a data series measuring the rate of change of an operating parameter relative to another operating parameter can then be used to identify problems in the system related to the container.

[0112] FIG. 8 shows the display of operating parameters. As mentioned above, the controller 102(b) is not limited to reading temperature and humidity data from the refrigerator. Through the data port on the reefer, any operating parameters available to the reefer controller 102(b) can also be sent to the remote data server 114 for presentation to the user. As mentioned above, the operating parameters can include any information available to the reefer controller. Some examples of such information are illustrated in FIG. 8, however, it should be understood that the data is only exemplary and not intended to be limiting.

[0113] As shown in FIG. 8, operating parameters that are not directly related to the temperature and/or humidity in the refrigerated container may also be presented to the user. Some examples of such data may include a door status 802 that shows whether the container door is open or closed. In addition, the operating status of the adjustment device 804 may also be displayed. For each operating parameter, an indication 806 can be provided to indicate the special

Determine whether the parameter is in normal operation or in an error state, such as out of range or alarm state. Such information, for example, may be similar to the status information 308 described in FIG. 3. In addition, the operating parameters may include information such as the current set point 808 of the temperature and humidity of the refrigerator.

[0114] FIG. 9 shows a flowchart according to an embodiment of the present disclosure. The process starts in step 902, where data is read from the reefer controller. As mentioned earlier, the frequency of reading data from the reefer controller can be configured by the user. Then the process continues to step 904, where it is determined whether the data is out of range. As mentioned earlier, the allowed data value range can also be configured by the user. If the data is out of range, the process continues to step 906, where it is determined whether the user has enabled out of range reporting. In some cases, the user may not be required to report an out-of-range situation immediately and is willing to wait until the next periodic interval for reporting. If out-of-range reporting is not enabled, the process continues to step 908, where it is determined whether it is the time for periodic reporting.

[0115] As described above, the time interval for periodic reports can be configured by the user. If it is not the time for periodic reporting, the process continues to step 902 and starts again. If it is a periodical reporting time, or the data is out of range and out-of-range reporting is enabled, the process continues to step 910, where the data is sent to the data server via satellite. Then the process returns to step 902 and repeats.

[0116] FIG. 10 shows an alternative embodiment of the present invention. The system shown in Fig. 10 is basically the same as the one shown in Fig. 1. The difference is that instead of using only the transmitter 106(e), Figure 10 uses the transmitter and receiver 106(f). As mentioned above, in one embodiment, the satellite communication system is provided by IridiumTM which allows two-way communication. Some embodiments of the invention use two-way communication to allow remote users 118 to control the operation of the reefer 102 without requiring physical access to the operator interface panel of the reefer.

[0117] As described above, the data interface on the controller 106 and the reefer controller 102(b) can communicate bidirectionally. A remote user 118 accessing an interface screen (such as the one described in FIG. 11) can change the operating parameters of the reefer controller 102(b). For example, the remote user 118 may change the temperature set point, resend the alarm, or even turn off the reefer unit 102(b). The remote user inputs the desired operation change and submits the change to the data server 114. The update of the operation of the reefer box 102 may be referred to as control data. The control data is then sent to the satellite receiver 106 of the controller 106 via the satellite 110 (f). The control data is then processed by the processor 106(c) to translate the control data into the format required by the refrigerator 102.

[0118] As mentioned above, different reefer manufacturers may use different protocols to control the reefer 102. Once the processor 106(c) has converted the control data into the protocol required by the reefer controller 102(b), the processor can send the control data to the reefer controller 102(6) through the data interface 106(b). The reefer controller 102(b) can then change the operation of the reefer to be consistent with the most recently updated control data.

[0119] FIG. 11 shows a screen used to update the operating parameters of the reefer. Just like other displays, the screen in FIG. 11 presents identification information 1102 of a specific refrigerated container. The screen may also display the operating parameter item 1104 of the refrigerator including the current state 1106. Such a state is similar to the state described with reference to FIG. 8. For example, the operation information may include item identifiers such as "coolant temperature" and the current state of the item. As shown in Figure 11, the "coolant temperature" item is currently in an alarm state. The user can then be allowed to make various choices to update this operating state of the reefer. For example, in the case of an alarm, the user may be provided with an option to reset 1108 the alarm.

[0120] In addition to the alarm information, the user can also update operating parameters such as the current temperature 1110 and humidity 1112 set points. Therefore, when the reefer is in transit, the shipper is advantageously allowed to change the temperature and humidity set points without requiring assistance from personnel associated with the ship, truck, or railroad that transports the container.

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[0121] As should be clear, if there is no embodiment of the present invention, if the shipper wants to change the temperature of his cargo, he will first need to determine where the reefer is located (e.g., ship, truck, train). The shipper then needs to locate the persons associated with the entity and send instructions to these persons to change the temperature of the refrigerated container. In many cases, this communication is extremely difficult or impossible. Further, even if communication with transportation personnel is possible, there may be a delay in taking action. For example, when the train is in transit, the transportation personnel cannot physically touch the refrigerated container transported by the train. Therefore, even if the instruction is received, the operating parameters of the refrigerator can not be changed until the train stops. The embodiments of the present invention solve this problem by advantageously allowing direct and immediate control of the reefer from a user remote from the reefer.

[0122] It should be understood that not all operating parameters provided by the reefer controller can be updated remotely. For example, the container door status 1114 can be displayed, but there is no way to remotely control the door. However, this information is still available. For example, if the container door is opened, the shipper can order the reefer box to be turned off, because if all the cold air escapes from the opened door, there is no reason to provide refrigeration to the container.

[0123] Once the user makes any desired operational changes, the user can click the update 1116 button. As described above, this can result in the generation of control data to be sent to the reefer controller 102(b) via the satellite 110 and the controller 106. The reefer controller can then change its operating parameters based on the control data.

[0124] FIG. 12 shows a flowchart according to an embodiment of the present disclosure. The processing steps start at step 1202, where control data from the user is received. As described above, through the interface described with reference to FIG. 11, control data can be received from the user. The process then continues to step 1204, where the control data is sent via satellite. In step 1206, control data can be received from the satellite by the receiver of the controller. In step 1208, the controller may send the control data to the reefer controller. As described above, step 1208 may also include modifying the control data to make it consistent with the protocol expected by the reefer controller. In step 1210, the reefer controller may update its operating parameters based on the control data. This can include resetting alarms, changing temperature or humidity set points, or many other actions on the refrigerator.

[0125] FIG. 13 is a block diagram of a computer device. The components in the computer device can be presented as any of the components shown in the previous figures. The subsystems shown in FIG. 13 are interconnected via a system bus 1375. Additional subsystems such as a printer 1374, a keyboard 1378, a fixed disk 1379 (or other memory including computer readable media), a monitor 1382 coupled to a display adapter 1376, etc. are shown. Peripherals and input/output (I/O) devices coupled to the I/O controller 1371 may be connected to the computer system through any number of devices known in the art, such as the serial port 1377. For example, the serial port 1377 or the external interface 1381 may be used to connect the computer device to a wide area network such as the Internet, a mouse input device, or a scanner. The interconnection via the system bus enables the central processing unit 1373 to communicate with each subsystem and control the execution of instructions from the system memory 1372 or the fixed disk 1379, as well as the exchange of information between the subsystems. The system memory 1372 and/or the fixed disk 1379 may include computer-readable media.

[0126] It should be understood that the present invention as described above can be implemented in the form of control logic of computer software in a modular or integrated manner. Based on the disclosure and teachings provided herein, those of ordinary skill in the art will know and understand other ways and/or methods of using hardware and a combination of hardware and software to implement the present invention.

[0127] Any software component or function described in this application can be implemented as a software code executed by a processor using any suitable computer language. Such a suitable computer language is, for example, Java using traditional or object-oriented technology. , C++, or Per 1 etc.

[0128] The software code can be stored as a series of instructions or commands in such as random access memory (RAM), read only memory (ROM), magnetic media (such as hard drives or floppy disks), or optical media (such as CD-ROM). Class on computer readable media. Any such computer-readable medium can reside on or in a single computing device, and can exist in a system or network

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On or in different computing devices in the network. It may also reside entirely outside of any computer device in some embodiments. The computer-readable medium may be implemented by one or more volatile and/or non-volatile memory devices using any suitable optical, electrical, and/or magnetic devices for data storage.

[0129] The above description is illustrative and not restrictive. After reading this disclosure carefully, many variations of the present invention will become apparent to those skilled in the art. Therefore, the scope of the present invention should not be determined with reference to the above description, but should be determined with reference to the appended claims and their full scope or equivalent solutions.

[0130] For example, it should be understood that the container may have any number of reefer controllers to monitor various operating parameters of the container. For illustration, the container may include a first reefer controller to monitor temperature and humidity as described above, and a second reefer controller to monitor the atmosphere of the container. Monitoring the atmosphere may include reading the level of oxygen, carbon dioxide, carbon monoxide, nitrogen dioxide, or any other atmosphere of similar quality. Such a second reefer controller can be installed on the same or a separate reefer unit. For example, the second reefer unit may be installed at the air hole of the container.

[0131] The controller 106, in some embodiments, can be used to couple to two separate reefer controllers. For example, the controller 106 can be used to couple to a first refrigerator controller (eg, 102(b)) that uses a data interface (eg, RS 232 serial interface, FireWire, USB, or wireless interface) to monitor temperature and humidity. ). In addition, the controller 106 can be used to couple to a second refrigerator that monitors the atmosphere through the same or a different type of interface (eg, a wireless interface, such as Bluetooth, Wi-Fi IEEE 802.11, or any other similar wireless communication that supports a wireless mesh network). Box controller (not shown). Using a single controller to obtain operating parameters from multiple reefer controllers provides relatively complete information related to the container's environment while limiting settings and hardware costs.

[0132] One or more features from any embodiment may be combined with one or more features of any other embodiment without departing from the scope of the present invention.

[0133] References to "a", "an" or "the" are intended to mean "one or more" unless there are specific indications to the contrary.

[0134] All patents, patent applications, publications, and descriptions mentioned above are hereby incorporated by reference in their entirety in general. Nothing is recognized as prior art.