Bidirectional wireless transmittable receptacle-type wattmeter and power-consumption information display remote controller

Socket type power meter and power information display remote control capable of two-way wireless transmission

The present invention provides a socket type power meter and a power information display remote controller capable of two-way wireless transmission, and collects power information of various electrical appliances on one or more power meter sockets by wireless communication using a remote controller, including Current power (W), total accumulated power (KWh), commonly known as power consumption, interval power consumption (KWh) and time, and current voltage (V), current (A), current power (VA) Power factor (PF), etc., make the power message transparent, and can also remotely switch the power supply, thus effectively managing applications, such as electricity cost calculation, saving electricity and improving power efficiency and safety.

Existing power measuring devices or electric energy measuring devices are very large in size and cannot be loaded into a small power meter space. Therefore, if you want to know the power consumption of an electrical appliance, it takes a lot of effort to use it. Expensive power meters or metering meters are used for testing to achieve the goal, so it is very uneconomical and not practical. Therefore, it is indeed necessary to seek a combination of miniaturization applications.

The main purpose of this creation is to provide a socket type power meter and a power information display remote controller capable of two-way wireless transmission. The socket type power meter integrates a large and large power measuring circuit and is centrally located in one The small PCB board enables a complete wide-range, high-accuracy power measurement module, enabling power measurement applications to achieve low cost and small size, and is easy to use and can be used for plugging and bonding various electrical appliances. Store detailed electrical information of electrical appliances, and then match the use of a remote control to display the power information on the display screen of the remote control to understand the power consumption characteristics of each electrical appliance and whether it is effectively used.

The second purpose of this creation is to provide a two-way wireless transmission socket type power meter and power information display remote control design, which is to use the two-way communication function of the socket type power meter and the remote controller to increase operation and control. Convenience, using the two-way communication capability of the remote control, in addition to being able to easily understand the power consumption and current usage of various electrical appliances, it is also convenient to control the power switch to save power.

Another object of the present invention is to provide a socket type power meter and a power information display remote controller design capable of two-way wireless transmission, wherein the single remote controller can simultaneously control and remotely read more than one power meter (if implemented) The example shows three socket type electric meters), which is equal to the shared display operation panel, and can be centrally managed, and make good use of the microcomputer's storage classification technique, and can provide more power consumption information for reference and application of analysis management. .

The structural features and other functions and purposes of the present invention are described in detail below with reference to the accompanying drawings. As shown in the accompanying drawings, the present invention is designed as a "two-way wireless transmission socket type power meter and a power information display remote controller". The utility model comprises a socket type power meter 1 (such as the first figure and the seventh figure) and a power information display remote control 2 (referred to as a remote controller 2; as shown in the fifth figure), the socket type power meter 1 has power measurement and wireless The function of transmission, the remote control 2 is a display with two-way remote control, and the two are combined into a complete power monitor. In other words, the creation system will be a power measurement part (hereinafter referred to as a socket type power meter 1 or simply a power meter 1). ), and the display operation part (hereinafter referred to as the power information display remote control 2 or the remote control 2 for short) is separated, and then the 2.4 GHz radio frequency is used as the two-way communication instead of the pull line between the two, so that the creation The remote control 2 can control and remotely read three (one) power meters 1 to make the operation simpler and more convenient for the parts and materials.

The socket type power meter 1 has the outer structure as shown in the first figure, the functional block as shown in the second figure, the circuit composition as shown in the third figure, and the power measurement module circuit. The four figures are shown.

As shown in the first figure, the socket type power meter 1 is mainly composed of a plug 11 , a socket 12 and a body 13 , wherein the plug 11 is disposed on one end surface of the body 13 . It can be directly inserted into a general-purpose socket, and the power of the power meter 1 is taken from the voltage on the plug, and converted to generate a DC 5V voltage; the socket 12 is disposed on the other end surface of the body 13 and is connected to the plug. 11 leads, one of the strings has a very low resistance, and the resistance is used to detect current; the body 13, in addition to the plug 11 and the socket 12, and has a 1Wh / P The indicator light 14, a remote control indicator (REMOTE) 15 and a light touch key 16 (as shown in the seventh figure, referred to as ID-SET), the light touch key 16, if touched by the setting key Indicates that the communication identification code is set. When the indicator light is on, it means that the ID code is to be changed.

As shown in the second figure, it is a functional block diagram of the socket type power meter, wherein the block 10 is a plug of the power meter, the block 20 is a socket, the block 30 is a relay capable of controlling the power switch of the socket, and the block 40 is a power measuring module. The power information measured by the conversion is transmitted to the microprocessor and the periphery of the block 70 via the communication method of TX, RX, etc., and then communicates with the remote control display via the wireless transmission module of the block 60, and the power information is transmitted. It is transmitted to the liquid crystal display screen 21 of the remote controller 2, and the remote controller 2 also transmits the signal of the switching power supply to the control socket power supply of the block 30 via the blocks 60 and 70.

Block 90 is a touch panel. When the hand is close, the block 80 communication identification code (ID) setting and the setting indication LED are triggered. At this time, the microprocessor will not compare the identification code (ID) in the received signal, as long as In accordance with the communication agreement of this creation, the power meter 1 can be controlled, and the ID reading is not performed. Only the ID code is stored. When the touch panel of the box 90 is pressed again, the setting LED will be off and stored at this time. The last ID code is the identification code of the power meter 1, and the microprocessor must read or control the power information or power of the power meter 1 every time the microprocessor receives the transmission signal and must compare the identification code.

Block 50 is the power supply for the power meter 1 and is a wide range (85~265V) AC voltage input, and the converted output DC 5V is supplied to each circuit of the power meter 1 and 24V is supplied to the relay. Action principle and function: As shown in the third figure, the power supply part, the power supply is rectified by D1, EC1 and EC2 are power supply filter capacitors, which can operate in DC100V~400V, and the conversion input range is AC70V~280V, all of which can operate normally, U1 For the switching power supply IC, it can meet such a wide range, in which R1, C2, D3 are high voltage pulse signal elimination circuits, R2, D5, EC6, R3, C3, etc. are U1 power supply circuits, optical isolation ICs, U2, R4 R6, R5, R8, and the regulator IC ShR1 form a voltage feedback feedback circuit. The ratio of ON and OFF of U1 is determined by the ratio of feedback of U2, and then the voltage of 5V is controlled, and the power of 5V is D2 rectification, through the EC3, L1, EC4 and other components of the filter circuit, a stable DC 5V power supply is provided, which is provided to other circuits. In addition, a set of power supplies is wound around the transformer T1, and about 24V can be obtained by D3 rectification and EC5 filtering. Power supply as a push for Relay .

In addition, the push relay circuit is driven by the J2-8 pin. This pin circuit is controlled by the microprocessor PA7. When the PA7 changes from Low to Hi, the RY1 relay is pushed through R9 and the optical isolation IC U3 and R7, Q1, etc. The RY1 relay is activated to make the socket have power. Otherwise, if the PA7 is Low, the outlet power will be turned off.

In short, this circuit is from the mains AC power supply, to obtain 5V and 24V power supply with high efficiency, and is provided to other circuits and relays of this creation.

As shown in the third figure, the microprocessor and peripheral parts, U4 in the figure is the microprocessor selected for the creation, and contains the software inside, connected to the peripheral circuit of the microprocessor and the J3, J4, J5 connectors. Other circuits, through the operation of the program, complete the creation function and purpose.

U4 uses Y1's external oscillator to obtain a stable time base signal, C4 and C7 are power supply filter capacitors, D7 is a regulated diode protection U4, and R11 and C5 are power-on reset signals (POWER ON RESET). U5 is a memory IC that can store power information and calibration correction values and identification codes (ID). After the power is turned off, the data will continue to be saved.

In the figure, the TXD and RXD of J3 are used to read and write the power measurement module. That is, through the simple two-wire communication interface, all the information measured by the power measurement module can be easily read. The PA7 of J3 in the figure is It is used to control relay RY1.

In the figure, J4 is connected to the wireless transmission module, and the 2.4GHz wireless channel of the wireless transmission module communicates with the same module on the remote controller to transmit power information to the remote controller, and the LCD liquid crystal display screen on the remote controller display.

In the figure, J5 is connected to the communication identification code setting and indicating circuit. When the PA4 of J5 is high (HI), U4 will read the ID code in U5 every time it receives the signal from the wireless transmission module. Compared with the ID code of the signal received at the moment, it is completely consistent. The LED2 remote control reaction indicator in the figure will flash twice, indicating that the reception is correct, the power data or control relay will be read according to the command of the received signal, and the communication is completed. The identification function achieves the purpose of controlling a plurality of power meters 1 by one remote controller 2.

If U4 reads that PA4 is low (LOW), it means no ID code comparison action, so when we want to set or change the ID code of the power meter 1, you can touch the K1 touchpad to let ID The setting indicator LED1 is lit, indicating that PA4 is LOW. At this time, U4 will store the ID code of the received signal into U5. As a new ID code, it is not comparable to the ID code, and can be directly recognized by the power meter 1. Therefore, at this time, we operate the power meter selection button of the remote controller 2 (as shown in the fifth figure, the present embodiment includes any of the three power meter selection keys 221, 222, 223 of the numbers 1, 2, and 3 in the figure). The key will make the power meter 1 work. At this time, the LED2 also flashes to indicate the communication permission. After the channel is determined, the K1 touch piece is touched by hand. At this time, the LED is turned off, and the last successful communication ID code is stored in the U5. This new ID code becomes the passcode for the signal received by the power meter 1.

As shown in the third figure, the communication identification code is set and indicated. The purpose of the circuit is to easily complete the identification code setting and change in the communication signal, so that the remote controller 2 can clearly indicate the object to be communicated. Let the power meter 1 easily set the so-called customs clearance code anytime and anywhere. The U6 in this circuit is the touch IC, and the U6 in the circuit is set to the function of the lock (Latch), that is, when the hand touches the touch sheet K1 When the PA4 of U6 is locked to the LOW potential, until the next time the hand touches K1 again, LED1 is used for display. Each time the PA4 potential is turned, the LEDs are lit or extinguished. When LED1 is off, it means that PA4 is HI potential. If U4 receives the wireless transmission module signal, it will compare the ID code, so the status is the normal use state; if LED1 is lit, it means PA4 is LOW potential, U4 will The ID code in the received signal is stored in U5, and at the same time, the ID code is not passed, and the LED2 will flash twice, indicating that any ID code can pass, and U5 is also rewritten into the last ID code. Until the LED goes out, the last time in U5 The ID code is written to become an official ID code of the electricity meter, the next communication signal ID code to the ID code U5 like, in order to be accepted, to achieve the purpose of identification code setting.

The power measurement module shown in the third figure is an important breakthrough and key to the creation. Please refer to the circuit diagram in the fourth figure. The composition and purpose of this power meter 1 are as follows: The key parts of the power meter 1 are measured. Concentrated on a small PCB, including current sensing resistors, voltage sensing resistors and power measurement ICs with register calibration, microprocessors that perform automatic calibration and program operation, and memory to store calibration parameters IC and so on.

After integrating the above-mentioned parts and applying automatic calibration, this small piece of PCB board becomes a complete power measurement module with complete and accurate power measurement information. When used, only 5V power supply is provided externally. The communication interface reads the measured values of this module without concern that the accuracy will change.

As shown in the fourth figure, the power measurement module circuit, U1 is the microprocessor containing the calibration program and the control software. In the figure, RT1, C4, C5, and L1 are the power supply 5V filter circuit, and ZD1 is the protection voltage regulator. Polar body, R2 and C3 are power-on RESET circuits, and time-base signals are taken through R, 8 power measurement ICs. U3's oscillator provides the signal, while the U3 measurement IC's time base circuit is composed of the X1 oscillator and C17, C18, and U1 share a time base signal, in addition to saving a group of oscillators, the most important The purpose is to improve the measurement stability of the power measurement module. C6 and C7 are the power supply 5V filter capacitors on the circuit diagram, C15 and C16 are the reference voltage filter capacitors obtained from the 5V power supply in U3, and R14 is the detection current resistor to detect R14. The voltage at both ends can calculate the current flowing through R14 proportionally. Because R14 has a very low resistance, it can flow 20A or more. The voltage across R14 is filtered by R6, R7 and C11 and C12. Add to the first input of the power measurement IC, that is, the current signal input, the second input is the voltage input, which is obtained by dividing the voltages of R13, R12 and R11, and the voltage filters of C14, C13 and R10 are added to the second of U3. The group input, U3 power measurement IC, respectively reads the current and voltage values of the current and voltage signals of the first group and the second group with extremely high speed and high resolution A/D circuits, and passes through various internal measurement items. Corresponding to the role and operation of the scratchpad, Get a variety of current power information, including voltage (V, rms value), current (A, rms value), power (W, that is, V and A, product of instantaneous multiplication), apparent power (VA, That is, the value of the above-mentioned V and A root mean square multiplication), the power factor (PF, which is the value of the power W except the apparent power, that is, PF=W/VA), the frequency (Hz), and the watt hour (Wh, ie, watt Multiply the time or the cumulative value of watts, etc., so if we change the content value of each group of corresponding registers of each measurement item, we can change the above measurement data. The practical innovation is to make full use of such characteristics. In particular, many sets of "calibration parameters" are designed to extend the range of the U3 measurement IC to make it smaller, to a larger voltage, current, phase angle and frequency range, while still maintaining high accuracy measurements. To increase its performance and economy.

In addition, LD1 in the figure is the indication LED called by the electric energy school. When U1 obtains the measured value from U3 via the control pin, it also accumulates the U3 electric energy extraction signal, that is, the watt hour signal (CF-IN in the figure), when the electric energy When the accumulated amount reaches 1Wh, it will light LD1 once. This signal is also a commonly known meter constant, which means that each time the indicator LED flashes, it consumes 1Wh.

U1's control pin can directly read and write the contents of the U2 memory IC. U2 is a memory IC that can be quickly read and written, and can continue to maintain content after power-off. The IC is already written to the appropriate school before leaving the factory. Adjust the parameter value, and the source of the calibration parameter value is U1 communicates with the external calibration device through the P1 interface, obtains the measured value of the current real power supply, and then compares it with the power information measured by U3. The parameters that are converted into calibration parameters are written into U2 and U3, and then the measurement is repeated until the measured value of U3 is close to the error that U1 has read through the P1 calibration interface, and the automatic calibration is stopped. The correction operation is performed. At this time, the calibration parameter stored in U2 is the power calibration parameter under the current power supply condition, because in order to amplify the measurement range, it is segmented in various conditions such as voltage, current, phase, and frequency. Under the combination, there will be a variety of arrangement and combination of power consumption, which are first tested by the automatic calibration equipment, and stored in multiple sets of calibration parameters, in order to respond to various power consumption conditions, in other words, when the power module is shipped. , already The calibration parameters required for the various conditions encountered by the module are first stored in the U2 memory. When the actual measurement is taken, the appropriate calibration parameters are taken according to the current power usage, because there is such a Arrangement and multi-group automatic calibration parameters design, this power module can be applied to a wide range, such as voltage from 85 ~ 265V, current from 0.02A ~ 20A, phase angle from 60 behind to 60 or 45 ~65Hz, etc., such a wide range of ranges, this module has very accurate measurement values (in this embodiment, the error is less than 0.5%), and the power measurement items include voltage (V), current (A), power (W) Apparent power (VA), power factor (PF), frequency (Hz) and watt-hour (Wh), etc., the most worth mentioning is because of the design of this multi-group calibration parameter loading, let this item The circuit has a wide range of accurate measurement information without any calibration parts and precision linear parts, because this major breakthrough enables low-cost, small-scale power measurement applications to be realized.

As shown in the fifth and sixth figures, respectively, it is a schematic diagram of the external structure of the electric information display remote control 2 (referred to as the remote control 2) and its circuit composition in the present creation, and the electric information display remote control 2 is mainly The liquid crystal display screen 21 and the operation button 22 are two parts, the main feature is that the remote controller 2 has two-way communication, and can select the power meter 1 to be controlled, as shown in the embodiment number 1, 2, 3 in the figure. The three power meter selection keys 221, 222, and 223 can select any one of the power meters 1 to be controlled, and then the "current power (W)" can appear on the LCD screen through the wheel display keys 224, 225. , "Total power consumption (KWh)" and "short-term power (KWh)" and other information, in addition to the LCD screen display "current power" screen, you can also operate the remote control up and down keys, can appear voltage item by item ( V), current (A), apparent power (VA), power factor (PF) and other power information, or pressing the PWR-ON control button 226 or the PWR-OFF control button 227, can also directly switch the power meter 1 The power supply. In short, a remote controller 2 can be used in conjunction with three (multiple) power meters 1 to remotely control each power meter 1 power supply, and can also read measurement information of each power meter 1.

As shown in the sixth figure, the circuit component of the remote controller 2 is mainly divided into four parts: (1) is a microprocessor and an LCD driving part, such as U1 and peripheral parts.

(2) For the operation of the button part, the circuit numbers SW1~SW9, a total of nine buttons.

(3) is the part of the liquid crystal display.

(4) is a 2.4 GHz radio frequency module.

Firstly, the U1 microprocessor describes its working principle and program function. The remote controller 2 uses two 1.5V/3 batteries, that is, the battery provides 3V as the working power. In addition to the U1 micro-processing, it is also supplied to the LCD. Display screen and wireless RF module use, C8, C9 are power supply filter capacitors, the microprocessor has two sets of time base generation circuits, one of which is the time base circuit for program execution, composed of C4 and R2, the frequency Higher, for the U1 microprocessor program execution; another time base signal is the oscillation circuit composed of Y1, C6, C7, the lower frequency is used to calculate the time and liquid crystal display.

R4 is a thermistor, with R3, R5, R6 combined to form a temperature measurement circuit. In addition, K1 ~ K9 are the key output signals, which are respectively connected to the panel operation buttons of the SW1~SW9 nine remote controllers, U1 is based on K1~K9 The potential to perform the user's button functions.

In the fifth figure, U1 is connected to the display LCD via CON18. The LCD uses 18 signal lines for multiplex scanning. The LCD image shown in the figure is the all-illuminated pattern. In actual use, U1 will be based on the current The operation command pushes the LCD display screen to illuminate only the icon of the LCD part in the figure to complete the desired display content.

As shown in the fifth figure, U1 is connected to the wireless RF transmission module via JP1. The U1 microprocessor uses the current operation command (the user presses SW1~SW9) to send the desired message, including the identification code, via the wireless device. The RF module transmits to the specified power meter. When the specified power meter receives the signal and the identification code is the same, the message is responded to by the agreed communication content. The message responded by the power meter is also received by the module, and the U1 microprocessor is notified via JP1 to process the received message and displayed on the LCD. In short, U1 relies on this wireless communication module to communicate with several power meters in two directions, just like a mobile display operation panel, which uses a wireless transmission module and several power meter cables to centrally control.

The above-mentioned power measuring module disposed inside the socket type power meter 1 mainly utilizes a circuit composition structure and an automatic calibration technology, and allows the module to adapt to a wide range using a minimum of parts and circuits, for example, 85V~265V and 0.02A~20A and the backward 60 to the angle of 60ultra, etc., can be very accurate measurement, and with the original touch identification code setting scheme, the remote control 2 can be very simple and The power meter 1 establishes a communication pipe, and the remote controller 2 and the power meter 1 have a special identification code (ID) setting mode, so that the display and the memory can be easily and economically shared, so that one remote controller 2 can be selected. View the information of multiple power meter 1, and the current power, total power consumption, short-term power consumption and current voltage, current, current power, power factor and other information of each power meter can be displayed on the remote control LCD. Check and, if necessary, remotely turn on the power, so the overall control is extremely convenient and practical.

In summary, we can see that this studio is designed as a "two-way wireless transmission socket type power meter and power information display remote control". Its overall application is a novel initiative, and its operation is extremely convenient, and it is very reasonable and practical. This applies for a new type of law, and prays for a patent. Real sense of virtue.

<p>1 socket type power meter</p><p>11 plug</p><p>12 socket</p><p>13Ontology</p><p>141Wh/P indicator</p><p>15Remote indicator light (REMOTE)</p><p>16With light touch button</p><p>2Power information display remote control</p><p>21LCD screen</p><p>22 operation buttons</p><p>221, 222, 223 power meter selection button</p><p>224, 225 wheel display keys</p><p>226PWR-ON control button</p><p>227PWR-OFF control button</p><p>Box 10 Plug of the power meter</p><p>Box 20 socket</p><p>Block 30Relays that control the power switch of the outlet</p><p>Box 40Power Measurement Module</p><p>Block 60Wireless Transmission Module Communicates with Remote Display</p><p>Box 70Microprocessor and surrounding</p><p>Box 80Communication Identification Code Settings and Instructions</p><p>Square 90 touch film</p>

The first figure is an external perspective view of the creative socket type power meter.

The second figure is a functional block diagram of the creative socket type power meter.

The third figure is the circuit composition diagram of the creative socket type power meter.

The fourth figure is a circuit diagram of the power side quantity module of the creation socket type power meter.

The fifth picture is a schematic diagram of the appearance of the remote control device for creating a power information.

The sixth figure is the circuit composition diagram of the remote control device for the creation of electricity information.

The seventh figure is a bottom view of the creative socket type power meter.