Multifunction occupancy sensor.
Abstract
A multifunction passive infrared occupancy sensor which functions as an occupancy sensor for security systems and also as an occupancy sensor for energy management control systems. The occupancy sensor comprises at least one segmented infrared lens array wherein the segments of the infrared lens array stablish different optical lobes in the field of view of the occupancy sensor. At least one pyroelectric infrared detector is positioned at or near the focal point of the segmented infrared lens array, for detecting movement of infrared sources within the field of view of the occupancy sensor and producing an output signal representative thereof. A processing means analyzes the output signal of the detector for security detection purposes by detecting changes in the output signal greater than a given security threshold. The processing means also analyzes the output signal of the detector for energy management purposes by detecting changes in the output signal greater than a given energy management threshold, which is less than the security threshold. In one embodiment first and second processing circuits detect changes in the detector output signal greater than the security threshold and energy management threshold. In a second embodiment the output of the detector is coupled to an analog to digital converter, the output of which is coupled to a digital processor which utilizes one of two different software processing routines, a security threshold processing routine, and an energy management threshold processing routine. A further embodiment electronically switches detector elements in a detector element array.

Term
Term ended
Expired 9 October 2017, 9 years ago.
- Priority
- Filed
- Granted
- Expired
- Today
20 claims: 1 independent, 19 dependent
- 1REIVINDICACIONES 1. Un sensor de ocupación infrarrojo pasivo multifuncional que funciona como un sensor de ocupación para sistemas de seguridad y también como un sensor de ocupación para sistemas de control de administración de energía que comprende:a. un medio de formación de lentes infrarrojos segmentados, en donde los segmentos de los medios de formación de lentes infrarrojos establecen lóbulos ópticos diferentes en el campo visual del sensor de ocupación;b. un medio detector infrarrojo piroeléctrico colocado en o cerca del punto de enfoque del medio de formación de lentes infrarrojos segmentados para detectar el movimiento de las fuentes infrarrojas dentro del campo visual del sensor de ocupación y producir una señal de salida representativa del mismo;c. un procesador que comprende un primer medio de procesamiento para analizar la señal de salida del detector para fines de detección de seguridad detectando los cambios en la señal de salida mayor que un umbral de seguridad determinado, y un segundo medio de procesamiento para analizar la señal de salida del detector para fines de administración de energía a fin de detectar los cambios en la señal de salida mayor de un umbral de administración de energía determinado, en donde el umbral de administración de energía del segundo medio de procesamiento es menor que la del umbral de seguridad del primer medio de procesamiento.
- 2Un sensor de ocupración infrarrojo pasivo multifuncional de conformidad con la reivindicación 1, en donde el medio de formación de lentes infrarrojos segmentados comprende una sola formación de lentes ópticos.
- 3Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 2, en don<Je la sola formación de lentes ópticos se diseña para llenar los requisitos de seguridad y proporciona una ganancia óptica de dos veces o más, y un número mínimo de campos visuales de segmento óptico que proporciona menor sensibilidad para los movimientos pequeños dentro del campo visual del sensor que una formación de lentes ópticos diseñada para requisitos de administración de energía.
- 4Un detector de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 2, en donde el primer medio de procesamiento comprende un primer circuito de procesamiento para detectar los cambios en la señal de salida del detector mayores de un umbral de seguridad determinado, y el segundo medio de procesamiento comprende un segundo circuito de procesamiento para detectar los cambios en la señal de salida del detector mayor que el umbral de administración de energía determinado, y en donde el umbral de administración de energía en el segundo circuito de procesamiento es menor que el umbral de seguridad en el primer circuito de procesamiento.
- 5Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 1, en donde la señal de salida del detector está acoplada con un convertidor de analógico a digital, la salida del cual está acoplada con el procesador que comprende un solo procesador digital que utiliza una de dos rutinas de procesamiento de software diferentes, la primera rutina de procesamiento utiliza un umbral de seguridad y una segunda rutina de procesamiento utiliza un umbral de administración de energía, y en donde el umbral de administración de energía es menor que el umbral de seguridad.
- 6Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 1, en donde un conmutador de control analógico controla la amplificación de la señal de salida del detector bajo el control de un microcontrolador para configurar el sensor como un sensor de control de administración de energía con una ganancia de amplificación de circuito mayor, o como un sensor de seguridad con una ganancia de amplificación de circuito menor.
- 7Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 1, en donde el medio detector comprende una formación de un número de elementos de detección separados, en donde el número de elementos de detección activos se conmuta electrónicamente para controlar el número de campos visuales que se proporcionan mediante cada segmento de formación de lentes, para disminuir la intensidad del campo visual para el sensor de control de administración de energía añadiendo elementos de detección, y para aumentar la intensidad del campo visual para el sensor de seguridad restando los elementos de detección.
- 8Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 7, en donde el número de elementos detectores separados en la formación comprende tres o más elementos detectores.
- 9Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 7, en donde un procesador conmuta electrónicamente el número de elementos de detección activos para controlar el número de campos visuales que se proporcionan mediante cada segmento de la formación de lentes.
- 10Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 1, en donde el medio de lente comprende una primera formación de lentes ópticos diseñados para seguridad y que tiene un primer número de segmentos de lente, y una segunda formación de lentes ópticos diseñada para administración de energía y que tiene un segundo número de segmentos de lente, mayor que el primer número de segmentos de lente, que proporciona mayor sensibilidad a los movimientos pequeños dentro del campo visual del sensor.
- 11Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 1, en donde el medio de detección comprende un detector de seguridad separado y un detector de administración de energía separado, y además comprende un amplificador de seguridad separado que tiene una ganancia de amplificación de seguridad, y un amplificador de administración de energía separado que tiene una ganancia de amplificación de circuito de administración de energía que es mayor que la ganancia de amplificación de seguridad.
- 12Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 11, en donde la relación de la ganancia del amplificador de administración de energía con respecto a la ganancia del amplificador de seguridad queda dentro de la escala de 3:1 a 5:1.
- 13Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 1, en donde el lente infrarrojo segmentado tiene una ganancia óptica dentro de la escala de una vez a cuatro veces.
- 14Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 1, en donde el procesador detecta los cambios positivo o negativo predeterminados en la señal de salida desde un nivel de voltaje promedio de línea de base.
- 15Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 14, en donde los cambios predeterminados en la señal de salida son mayores de 500 milivolts.
- 16Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 14, en donde le procesador detecta dos cambios en secuencia de polaridad opuesta en la señal de salida que ocurren dentro de un cuadro temporal de ventana.
- 17Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 16, en donde el cuadro temporal de ventana es mayor de 75 milisegundos y menor de 2 segundos.
- 18Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 14, en donde el primero y segundo medios de procesamiento detectan tres o más cambios en secuencia en la señal de salida de 5 polaridad opuesta alternativa y cambios adyacentes en la señal de salida ocurren dentro de una cuadro temporal de ventana.
- 19Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 18, en 10 donde el cuadro temporal de ventana es mayor de 75 milisegundos y menor de dos segundos.
- 20Un sensor de ocupación infrarrojo pasivo multifuncional de conformidad con la reivindicación 1, en donde el sensor multifuncional se configura como un sensor 15 de control de adminitración de energía y cuando ocurre un evento detectado, el sensor se conmuta a una configuración de sensor de seguridad durante un período de tiempo y está al tanto para eventos detectados de seguridad y si no se detectan eventos de seguridad, el sensor regresa a un 20 sensor de control de administración de energía. -3940 -
Independent claims20
137 paragraphs in 8 sections, as filed
MULTIFUNCTIONAL OCCUPANCY SENSOR
This patent application is a continuation application in part of patent application Serial number 08 / 412,502, filed on March 29, 1995 for Motion Sensing System With Adaptive Timing for Controlling Lighting Fixtures and Patent Application Serial Number (touched by attorney 10255), filed August 30, 1996, for Temperature and Passive Infrared Sensor Module.
BACKGROUND OF THE INVENTION <sup>1</sup>FIELD OF THE INVENTION
The present invention generally relates to a multifunctional occupancy sensor and, more particularly relates to a multifunctional occupancy sensor as could be used in a occupied space network operating environment, such as a
<td>building</td><td>commercial automatic or</td><td>industrial</td><td>in</td><td>where</td><td>I know</td>
<td>install</td><td>multiple sensors for</td><td>detect and</td><td colspan="2">control</td><td>the</td>
<td>different</td><td>parameters in it.</td><td></td><td></td><td></td><td></td>
<td></td><td colspan="2">The present invention relates</td><td>with</td><td colspan="2">a sensor</td>
multifunctional occupancy signal that provides a first occupancy exit signal for security systems and
-1a second occupancy output signal for power management control systems. The multifunctional occupancy sensor is particularly useful in a multifunctional sensor module that provides a plurality of parameter sensors in a sensor module that can interface with and control the operation of one or more processor control systems in a space environment busy network operation. The multifunctional sensor can comprise at least an occupancy sensor, an ambient light sensor and a temperature sensor. A common network and control communications processor is coupled with a common communication transceiver, and they are shared in common by the occupancy sensor, the ambient light sensor, and the temperature sensor so that the multifunctional sensor can be interconnected with and controlling the operation of one or more processor control systems in the network operating space occupied environment. The multifunctional network sensor system further comprises power management and security controller systems, and a common data communication network that connects to the multifunctional sensor and controller systems to form a locally operating network in a building. A plurality of multifunctional sensors are placed at different locations throughout the building.
-2Each multifunctional sensor is assigned a unique location address and can transmit and receive data, including its own unique address through the data communication network.
2. DISCUSSION OF THE PREVIOUS TECHNIQUE
Traditionally, separate sensors have been used to detect occupancy for power management control systems, such as lighting control systems, Heating, Ventilation, and Air Conditioning (HVAC) control systems, Side Management control systems Demand (DSM) and electrical load management, presence monitoring systems and to detect security in security systems, even though modules that combine occupancy detection and ambient light detection have been used in non-networked systems.
Generally, activating an occupancy sensor in a security system has more serious consequences than activating an occupancy sensor in an energy monitoring control system, such as a lighting control system, or a system HVAC or DSM system or presence monitoring system. For example, the activation of a
-3 Occupancy in a lighting control system would only extend the time that the control system maintains full lighting in a controlled lighting environment. In contrast to this, activating an occupancy sensor in a security system may result in dispatch of security or police personnel to the supervised premises to personally check the premises for a security breach or intrusion. If the alarm turns out to be a false alarm, a substantial financial penalty charge is frequently imposed in an attempt to discourage additional false alarms.
Passive Infrared (PIR) sensors, typically 8 to 14 micron wavelengths, are well known in the art and are frequently used as occupancy sensors in security systems and power management control systems such as systems lighting control or HVAC systems or DSM systems, and in presence monitoring systems. Passive infrared sensors frequently comprise a segmented lens such as a Fresnel lens, where lens segments establish different optical lobes in the field of view, and an IR pyroelectric detector and detect movement of IR sources within the detector's field of view. . Consequently, these sensors
-4PIR can be used as occupancy sensors in security systems and also in energy supervision control systems, such as lighting control systems or HVAC systems or DSM systems and also in presence supervision systems.
In order to make occupancy sensors in security systems more reliable and accurate compared to occupancy sensors in power management systems, occupancy sensors for security systems are characterized by basic design differences, among which there are the following different keys: (1) higher S / N electronic ratios, (2) more conservative activation criteria, and (3) optical visual fields with increased optical sensitivity, therefore lower visual fields.
Increased optical sensitivity means larger optical lens segments, while lower optical segment visual fields mean less sensitivity for small movements within the sensor's detection pattern. In power management sensors, greater sensitivity to small movements can be achieved by employing more segments in the lens to increase the number of optical lobes, and also by using more separate detector elements in the pyroelectric detector on which the optical lobes are focused.
-5 UNDERSTANDING OF THE INVENTION
It would be desirable to provide a plurality of parameter sensors in a multifunctional sensor module that can be connected to one or more of the controllers in the network to control the operation of security systems, power management systems, etc. in a busy space network operating environment such as a commercial or industrial automatic building. These controllers are commercially available which incorporate network operation such as Echelon LONWORKS, CEBus, BacNet, etc. In this multifunctional sensor module, it would also be desirable to combine the parameter sensors where possible, for example, into a multifunctional occupancy sensor that would be used by a safety sensor and also by power management systems. However, as mentioned above, occupancy sensors used in security systems when compared to occupancy sensors for use in power management control systems are characterized by basic design differences among which are the following key differences: (1) higher electronic S / N ratios, (2) more conservative trigger criteria, and (3) fields
-6 optical visuals with increased optical sensitivity, therefore smaller optical segment visual fields.
The present invention recognizes that the first two key differences can controlled by an intelligent control network system, such as those that offer interoperability and a media independent communication protocol, eg, LONWORKS. Therefore, a sensor can be configured remotely or locally for both security sensor parameters, power management control parameters. Smart control can reconfigure the PIR occupancy sensor to switch back and forth between these two sets of parameters. A reasonable balance between the optical sensitivity of the optical segment visual fields and the activation criteria can be used to develop a combined security management and power management sensor.
Accordingly, a primary object of the present invention is to provide a multifunctional occupancy sensor that provides a first occupancy signal for security systems and a second occupancy output signal for power management control systems.
A further object of the present invention is the provision of a multifunctional occupancy sensor
-7particularly useful in a multifunctional sensor module that provides a plurality of parameter sensors in a sensor module that can communicate with and control the operation of processor control systems in a busy environment.
In accordance with the teachings mentioned herein, the present invention provides a multifunctional passive infrared occupancy sensor that functions as an occupancy sensor for security systems and also as an occupancy sensor for power management control systems. The occupancy sensor comprises a segmented infrared lens array where the segments of the infrared lens array establish different optical lobes in the field of view of the occupancy sensor. A pyroelectric infrared detector is placed at or near the focus point of segmented infrared lens formation to detect movement of infrared sources within the field of view of the occupancy sensor, and to produce a representative output signal therefrom. A processing means analyzes the detector output signal for security detection purposes by detecting changes in the output signal greater than a certain security threshold. The processing means also analyzes the detector output signal for power management purposes, detecting changes in the output signal greater than a given power management threshold that is less than the safety threshold.
In greater detail, the modality includes a single optical lens array that is designed to meet safety requirements and provides an optical gain of two or more times and a minimum number of optical segment visual fields, providing less sensitivity to movement. Smaller within the sensor's field of view than an array of optical lenses designed for power management requirements.
In one embodiment, a first processing circuit detects changes in the detector output signal greater than the safety threshold, and a second processing circuit detects changes in the detector output signal greater than the power management threshold. .
In a second embodiment, the detector output is coupled with a single analog-to-digital converter, the output of which is coupled with a digital processor using one of two different software processing routines, the first processing routine using a threshold. safety and the second routine of
-910 processing using a power management threshold.
In a third mode, an analog control switch controls amplification of the detector output signal under the control of a microcontroller to configure the sensor as a power management control sensor with a higher circuit amplification gain than as a safety with less gain in circuit amplification.
In a further embodiment, the multifunctional sensor is configured as a power management control sensor and when a detected event occurs, the sensor switches to a security sensor configuration for a period of time and views the detected security events, If none of the safety events are detected, the sensor returns to the power management control.
In a further embodiment, the detector comprises a formation of a number of separate detection elements and the number of active detection elements that are electronically commutated to control the number of visual fields provided by each lens forming segment. The system decreases the visual field intensity for the power management control sensor by adding detector elements and increases the intensity of the
-1011 field of view for the security sensor subtracting detection elements. The number of separate detector elements in the preferred formation comprises three or more detector elements. A processor electronically switches the number of active detector elements to control the number of visual fields that are provided by each segment of the lens array.
In a further embodiment, the lens means comprises a first array of optical lenses designed for safety and having a first number of lens segments, and a second array of optical lenses designed for energy delivery and having a second number of Lens Segments, greater than the number of lens segments, provides greater first sensitivity to small movements within the sensor's field of view.
The detector comprises a separate safety detector and a separate power management detector, and further comprises a separate safety amplifier having a safety amplification gain, and a separate power management amplifier having a circuit amplification gain. greater than the safety amplifier.
The ratio of the power management amplifier gain to the amplifier gain is
-1112 security of preference falls within the scale of 3: 1 to
<td> 5:1.</td><td></td><td></td><td></td><td></td><td></td>
<td></td><td>Processor</td><td colspan="2">detects</td><td>positive changes</td><td> 0</td>
<td>negative</td><td>default</td><td>in</td><td>the signal</td><td>output from</td><td>a</td>
<td>5 level</td><td>average voltage</td><td>' of</td><td>line of</td><td>base which can</td><td>to be</td>
<td>greater than</td><td>500 minivolts.</td><td>The</td><td>processor</td><td>can detect</td><td>two</td>
sequence changes of opposite polarity in the output signal that occur within a window time frame that is preferably greater than 75 milliseconds and less than 2 10 seconds. The processor can also detect three or more alternating opposite polarity sequence changes in the output signal, when adjacent changes in the output signal occur within a window time frame, preferably greater than 75 milliseconds and less than 2 15 seconds.
BRIEF DESCRIPTION OF THE DRAWINGS
The aforementioned objects and advantages of the present invention for a multifunctional occupancy sensor can be more easily understood by a person skilled in the art by referring to the following detailed description of the various preferred embodiments thereof, which are taken together with 25 the accompanying drawings where the same elements
-1213
<td>are designated</td><td>through</td><td>numbers</td><td>identical reference</td><td>to</td>
<td>through the</td><td>different</td><td>views,</td><td>and where:</td><td></td>
<td>The</td><td>Figure 1</td><td>is a</td><td>functional diagram of</td><td>a</td>
<td colspan="2">network sensor system</td><td colspan="2">multifunctional according to</td><td>the</td>
present invention comprising multifunctional sensors, each of which generally includes at least an occupancy sensor, a temperature sensor, and an ambient light sensor, all of which share the same network communication and control processor and the same network communication transceiver, and a plurality of power monitoring systems and security controllers, all of which are connected to a common data communication network;
Figures 2, 3, and 4 illustrate three different types of multifunctional sensors according to the present invention, a wall-mounted multifunctional sensor, a ceiling-mounted multifunctional sensor, and a multifunctional wall switch sensor, each of which could be used in the multifunctional network sensor system of Figure 1;
Figure 5 is a schematic illustration of a first embodiment of the present invention using a single common optical array, a detector, and an amplifier for both security control and power management applicators, with two power circuits.
-1314 different processing at the amplifier output, a first processing circuit designed for safety criteria and the second processing circuit designed for power management control criteria;
Figure 6 is a schematic illustration of a second embodiment of the present invention that uses a single common optical array for both security control and power management control with a single detector, amplifier, and A / D converter, followed by a digital signal processor that employs two different software processing routines, a first processing routine designed for security and the second processing routine designed for power management control;
Figure 7 is a schematic illustration of a third embodiment of the present invention that also uses a single common optical array with a single detector for both security control and power management, followed by an analog control switch that controls the amplification of the pyroelectric output signal under the control of a microcontroller to configure the sensor either as a power management control sensor or as a safety sensor;
-1415
Figure 8 is a schematic illustration of a further embodiment of the present invention that optimally designs a first array of optical lenses for safety and optimally designs a second array of optical lenses for power management control, a safety amplification it is optimally designed with its own pyroelectric detector for the first insertion of optical lenses, and a power management control amplifier is optimally designed with its own pyroelectric detector for the second optical lens array, and the outputs of these two amplifiers are processed as in the previous modalities;
Figure 9 is a schematic diagram of a multifunctional passive infrared occupancy sensor where the pyrodetector comprises a formation of four detector elements, where the number of active detector elements is electronically switched to control the number of visual fields provided by each lens formation segment;
Figure 10 is a schematic electrical diagram of an appropriate amplifier (with component value changes) for use in the modalities of Figures 5 to 9.
DETAILED DESCRIPTION OF THE DRAWINGS
-1516
Referring to the drawings in detail, the
FIG. 1 is a functional diagram of a multifunctional network sensor system 10 in accordance with the present invention comprising multifunctional sensors 12, each of which generally includes at least one occupancy sensor 14, a ambient light and a temperature sensor 18, all of which share the same network communication and control processor 20 and the same communication transceiver 22. The multifunctional network sensor system 10 further comprises security, power management and controller systems 24, 26, 28, 30 and 32 and a common data communication network 34 that connects to all multifunctional sensors and controller systems.
Different multifunctional sensors 12 (1 to n) can be placed at various locations throughout a building, typically at least one on each floor level. Multifunctional sensors are typically housed in small plastic enclosures such as those illustrated in Figures 2, 3, and 4. The occupancy (or motion) sensor 14 technology may be passive infrared (PIR), IR, ultrasonic, sonic, RF, microwave, radar, or any other effective occupancy detection technology. A preferred version is the Passive Infrared (PIR) design that can be used in
-1617 hallways, rooms / offices, or open plan office cubicles, each provided with a lens designed to maximize the visual field and motion detection for that specific application.
Each multifunctional sensor 12 is assigned from a unique location address and connected to the common data communication network 34 placed throughout the building to form a local operating network. Each multifunctional sensor 12 can transmit and receive data, including its own unique address, through the data communication network 34, on a continuous periodic basis, such as every about 5 seconds, or can respond when interrogated by a data controller. power or security management.
The data communication network 34 can also be accessed by control systems requiring data such as: one or more lighting controllers 24 requiring data from one or more multifunctional sensors 12 on occupancy and ambient light; one or more security controllers 26 requiring data from one or more multifunctional sensors 12 on occupancy or security intrusion; one or more 28 HVAC controllers that require data from one or more of the multifunctional sensors 12 on occupancy and temperature, one or more 30 DSM controllers that require data from one or more of
-1718 the multifunctional sensors 12 for occupancy, temperature and ambient light and one or more presence monitors 32 that require data from one or more of the multifunctional sensors 12 for occupancy. The lighting, HVAC, DSM and security controllers can comprise a composite controller or individual controllers connected to the common data bus collector.
The data communication network 34 can use any appropriate technology or physical transmission means such as a twisted pair of wires, a power line carrier (PLC), RF, fiber optics, etc. and can employ any appropriate common bus collector data communications protocol, such as LONWORKS, CEBus, BacNet, etc.
Each multifunctional sensor 12 will generally include sensors to detect occupancy, ambient light level and temperature and can provide optimal cost / function design variations using all three any two or any one of these three basic detection functions, depending on the requirements / application of the user. Each multifunctional sensor can include additional sensors to detect time of day, relative humidity, CO<sub>2</sub> and other parameters. However, it should be noted that the mounting and exposure requirements of the parameter sensors
-1819 diverse in one sensor module are often quite different such that it is sometimes difficult to mount the various sensors in a common sensor module. For example, a temperature sensor could be mounted to expose airflow from the environment of a room being monitored, while a passive infrared occupancy sensor should be mounted so as not to be exposed to airflow from the environment of the room being monitored. The temperature sensor would also isolate or protect against direct exposure to the heat load from sunlight. Patent application Serial Number (attorney attorney 10255), filed on August 30, 1996, discloses and teaches about compatible mounting arrangements for a temperature sensor and a passive infrared sensor.
The multifunctional sensor and network sensor system are described in detail in copending patent application Serial Number (attorney's touch 10343), for Multifunction Sensor And Network Sensor Time, filed October 25, 1996, all of which is expressly incorporated herein by reference thereto.
Figures 2, 3 and 4 illustrate three different types of multifunctional sensors according to the
-1920 present invention, a ceiling mounted multifunction sensor 40, a ceiling mounted multifunction sensor 42, and a wall switch multifunction sensor 44, each of which can be used in the multifunctional network sensor system of Figure 1. The wall-mounted multifunctional sensor 40 is similar to the wall-switching multifunctional sensor 44 except that the wall-mounted multipurpose sensor 44 is mounted recessed in a wall switch receptacle case rather than being flush on a wall. The ceiling mount multifunctional sensor 42 is similar to units 40 and 44 electrically, but will generally not include a temperature sensor, and a front press switch as shown in Figures 4 and 5.
The different wall mount and ceiling mount multifunction sensors and the segmented lens formations for the different multifunction sensors are described in detail in the copending patent application Serial Number (attorney's note 10349) for Multiple Optical Designs For A Multifunction Sensor, filed on October 25, 1996, all exposures of which are expressly incorporated herein by reference thereto.
-2021
It would be desirable to provide a multifunctional sensor where a multifunctional occupancy sensor could be used by a security system and also by power management control systems.
The following represents a simplified approach and analysis of the optical and electronic approaches and variables in power management (e.g., lighting) and security processing.
<td rowspan="2">Electronic design</td><td rowspan="2">Scale</td><td colspan="2">Optical gain</td><td rowspan="2">Circuit gain</td><td rowspan="2">Threshold</td>
<td>(using input</td><td>signal of normal)</td>
<td>Security</td><td> 40'</td><td></td><td>4X</td><td> 1700</td><td>500 mv</td>
<td>Administration</td><td></td><td></td><td></td><td></td><td></td>
<td>power</td><td> 40'</td><td></td><td>X = Ref</td><td> 6700</td><td>500 mv</td>
<td>Sensor in combination</td><td> 20'</td><td></td><td>2X</td><td> 1700</td><td>500 mv</td>
<td>(in security mode)</td><td>(its T.)</td><td></td><td></td><td></td><td></td>
-2122
20 'combination sensor (in power management (est.) Mode) with small movement in detection pattern.
2X
1700 200 mv
Combination Sensor 40 '
2X 1700
200 mv (in power management (est.) mode) with large movement in the detection pattern.
Combination sensor 30-40 '(in power management (est.) Mode) with small movement in detection pattern
2X 1700
200 mv with a Quad linear training pyrodetector
A Simplified Analysis:
-2223 (Target Signal pk) security (Optical Won) security <sup>x </sup>(Electronic Earned) security <sup>= 500 mv</sup> (Optical Gain)<sub>I know</sub>g<sub>ur</sub>ity ~ (500 mv) / ((White Signal pk) security <sup>x</sup> (Electronic Gain) security) = 500 mv / (1700 X (White Signal pk) security) = 290 uv / (White Signal pk) security (White Signal pk) power management (Optical Gain) power management (Gain
Electronics)<sub>to</sub>dminitration of energy <sup>= mv</sup> (Optical Gain) power management <sup>=</sup> $ 00 mv / (Target Signal pk) power management (Gain
Electronics) power management) = 500 mv / (6700 X (Target Signal
Pk) power management) = 75 uv / (Signal, Blank pk) power management ·
Yes (Target Signal pk) power management (Target Signal pk) security
So: (Optical Gain) safety ^ (Gain
Optical) power management <sup>=</sup> 290 uv / 75 uv = 3.7: 1
-2324
Therefore, a combination of the power management and safety sensor would have an optical gain within the range of X to 4X but, having considered all factors, twice or more and as close to 4 times as feasible. . A 2-fold optical gain for the combination sensor, along with a reduction in scale (e.g., 40 'to 20') allows the electronic gain for the safety sensor to be retained. This retains the threshold of the safety sensor with respect to the noise ratio and corresponds to the rejection of electronically induced false trigger signals.
It will be seen from the table above, that the gain of the power management circuit with respect to the gain of the safety circuit is 6700/1700 or 3.9, as a practical matter a ratio within the scale of 3 to 5 is preferred.
The PIR sensor output can be evaluated according to the following specifications:
one. ) Detect positive or negative trajectories, e.g., 500 millivolts from an average baseline voltage level, e.g., 2.5 volts.
2. ) Signal a motion detection trigger when two sequential paths are of opposite polarity and occur within a time window of 75 milliseconds (typical) to 2 seconds (typical). As an alternative, signal a motion detection trigger when three or more sequential paths are of alternate opposite polarity and adjacent paths occur within a time window of 75 milliseconds (typical) to 2 seconds (typical).
3.) For the Safety Sensor: Normal Gain (Reference = 0 dB).
For Power Management Sensor: Increase Sensitivity, e.g., by 8 dB (typical).
The present invention can use a passive infrared (PIR) sensor such as a model number RE03HBBEC pyro sensor, manufactured by Nippon Ceramic Company Ltd. of Japan, which detects infrared radiation within the 8 to 14 micron range. The pyro sensor can be connected to an amplifier such as a dual op-amp circuit model number TLC27L2CD, manufactured by Texas Instruments Inc. of Dallas, Texas. The lens may be a lens used in the lens number sensor model MSFL-1200 from Bryant Electric, Inc. of Milford, Connecticut, which typically sends a signal indicating the motion detected when the detected PIR falls outside a threshold of
2.5 volts + 0.5 volt.
Figure 5 illustrates a first embodiment of the present invention using a single lens array 50.
-2526 amplifier 54 both common optical, detector 52 and the
<td colspan="2">for control applications</td><td colspan="2">security like</td><td>of</td>
<td>administration</td><td>power</td><td>with</td><td>two circuits</td><td>of</td>
<td>processing</td><td>different 56,</td><td> 58</td><td>at the exit</td><td>of the</td>
<td>amplifier.</td><td>The Amplifier</td><td> 54</td><td>preferably it is</td><td>a</td>
<td>amplifier</td><td colspan="2">band pass</td><td colspan="2">broad, it works</td>
at 40 Hz. the first of the scale
0.015 typically within processing circuit 56 is designed according to the safety criteria and the second processing circuit is designed according to the power management control criterion.
The common optical array, detector 52, and amplifier 54 are designed to meet the safety requirements or an acceptable compromise for amplifier gain and optical sensitivity. The power management control threshold in the first processing circuit 56 is designed to be of a required quantity less than the safety threshold in the second processing circuit
58. The security processing circuit 58 has a more conservative trigger criterion, eg, bipolar signal requirements or signal signature requirements. A typical prior art 52 PIR detector has two separate detector elements and the output signals from the two elements are electronically combined to form output signals of a predominant polarity (depending on the
-2627 direction of movement through the visual fields of the elements) with adjacent opposite polarity paths that may be close to or very different in amplitude from the predominant path.
One, variation of the first embodiment of the present invention also uses a single common optical array for both security control and power management. If the sensor is configured as a power management control session when an activation occurs (event detected) it is switched to a security sensor configuration for a period of time (e.g., 10 minutes or 50 percent of the delay time setting) and is aware of safety activations. If no security activations are detected, it returns to the power management control operating mode.
Figure 6 is a schematic illustration of a second embodiment of the present invention using a single common optical lens array 60 for both safety control and power management with a single detector 62, amplifier 64, and A-converter 66 / D, followed by a processor 68 that uses one or two different software processing routines, the first processing routine is designed according to safety criteria and the second processing routine is designed according to
-2728 according to the energy management control criteria. Again, the common optical lens array 60, detector 62, and amplifier 64 are designed to meet the safety requirements or are an acceptable compromise for the optical sensitivity and gain of the amplifier.
Figure 7 is a schematic illustration of a third embodiment of the present invention that also uses a single common optical lens array 70 with a single detector 72 for both security control and power management, and an analog control switch 74 that controls the amplification of the pyrodetector output signal under the control of a microcontroller 76 to configure the sensor as a power management control sensor or as a safety sensor.
For example, the source resistor 53 as illustrated in the Figure can be divided into two resistors with its common joint power amplifier input U1A-3 and by shorting the upper resistor electronically, the gain of the circuit can be changed, in an operating mode, if the sensor is configured as a power management control sensor when an activation occurs (event detected), controller 76 switches circuit 74 to a safety sensor configuration
-2829 for a period of time (e.g., 10 minutes or 50 percent of the delay time setting) and is aware of safety triggers and if no safety triggers are detected, controller 76 returns 5 switch circuit 74 to the power management control operating mode.
Furthermore, a pyroelectric detector with a detector element array, i.e., more than a typical PIR amount of two detector elements, can be used to electronically control the number of visual fields provided by each segment of the lens array. ; in this way, the density of the pattern FOV (Field of View) can be increased for the power management control sensor by electronically adding 15 more detection elements of the pyroelectric detector and its corresponding processing circuits (external to the pyroelectric sensor).
FIG. 8 illustrates a further embodiment of the present invention that optimally designs a first optical lens array 80 for safety and optimally designs a second optical lens array 82 for energy management control. Both optical arrays are preferably manufactured in a single array in a single piece combination of the polyethylene lens material (each optical array has its own
-2930 lens retainer, but both retainers are combined into one part of the plastic enclosure). A pyroelectric safety detector 86 forms an input to a safety amplifier 84 that is optimally designed according to the safety criteria. A pyroelectric power management control detector forms an input to a power management control amplifier 87 that is optimally designed in accordance with the power management control criterion. The outputs of these two amplifiers are then processed at 89 as in the previous modes.
Furthermore, the power management control detection circuit can be used as an additional check of the detected motion of security. This is advantageous as it provides redundancy for false activations of the electrical noise generated in the safety detection electronics, some false activations of the environmentally generated stimuli in the optical detection pattern and the environmentally generated stimuli in the sensor enclosure.
Figure 9 illustrates a further embodiment of the present invention wherein a pyrodetector 91 includes four separate detector elements 1-4, typically 1 millimeter by 2 millimeters separated by 1 25 millimeter spaces. The outputs of detectors 1 and 3 are directed to
-3031 an amplifier 93 and the outputs of detectors 2 and 4 are routed to an amplifier 95, and the outputs of both amplifiers 93 and 95 are supported by a processor 97. Processor 97 can selectively process the outputs of 5 the four detectors 1 to 4, or only detectors to 3, or only detectors 2 and 4. In this type of embodiment it is preferred that the pyrodetector comprises a formation of three or more detection elements, where each detection element can form a separate input 10 to the processor, or the outputs of two or more elements can be coupled together as illustrated in Figure 9. The number of active sensing elements is electronically switched by processor 97 to control the number of visual fields provided by 15 through each segment of the lens array to decrease the intensity of the visual field for the power management control sensor by adding detection elements, and to increase the field of view for the security sensor by subtracting the detection elements.
The embodiment of Figure 9 can also be used in a verification mode. For example, if detectors 1 and 3 are being used in a security mode and an activation occurs (event detected), the processor can be switched to detectors 2 and 4, and verify the
-3132 activation by detecting another activation with detectors 2 and 4.
Figure 10 is a schematic electrical diagram of an appropriate amplifier for use in the embodiments of Figures 5a-8. A prior art detector 90 includes two separate detector or sensor elements 92, which are coupled together, eg, in parallel or in opposite series, in this circuit to form a summed output signal that is the source followed by a FET 94 and a bandpass filtered and amplified in the circuit sections and 98 to form an output signal that, depending on the specific mode, could be an input to the A / D converter.
Even when various modalities and variations are described herein in detail in that of the present invention for a multifunctional occupancy sensor, it should be apparent that the disclosure and teachings of the present invention will suggest many alternative designs for those skilled in the art.
-3233
Contents8
6 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5 Sheet 6
58 members in 8 offices
Priority claims1
| Document | Office | Kind | Date |
|---|---|---|---|
| 73804596 | United States of America | A |
Members58
| Document | Office | Kind | |
|---|---|---|---|
| CA2168706A1 | Canada | A1 | |
| CA2168707A1 | Canada | A1 | |
| CA2168708A1 | Canada | A1 | |
| CA2168709A1 | Canada | A1 | |
| CA2168710A1 | Canada | A1 | |
| MX9600458A | Mexico | A | |
| US5699243A | United States of America | A | |
| CA2212772A1 | Canada | A1 | |
| EP0826950A1 | European Patent Office (EPO) | A1 | |
| US5726900A | United States of America | A | |
| CA2218581A1 | Canada | A1 | |
| CA2218589A1 | Canada | A1 | |
| CA2218961A1 | Canada | A1 | |
| EP0838791A2 | European Patent Office (EPO) | A2 | |
| EP0838792A2 | European Patent Office (EPO) | A2 | |
| EP0838793A2 | European Patent Office (EPO) | A2 | |
| MX9707773A | Mexico | A | |
| MX9707776AThis record | Mexico | A | |
| MX9707825A | Mexico | A | |
| US5764146A | United States of America | A | |
| US5772326A | United States of America | A | |
| US5774322A | United States of America | A | |
| US5777837A | United States of America | A | |
| EP0838793A3 | European Patent Office (EPO) | A3 | |
| MX9706467A | Mexico | A | |
| US5856905A | United States of America | A | |
| US5946209A | United States of America | A | |
| US5971597A | United States of America | A | |
| US5973594A | United States of America | A | |
| EP0838791A3 | European Patent Office (EPO) | A3 | |
| EP0838792A3 | European Patent Office (EPO) | A3 | |
| US6082894A | United States of America | A | |
| US6151529A | United States of America | A | |
| EP1071054A2 | European Patent Office (EPO) | A2 | |
| EP0838793B1 | European Patent Office (EPO) | B1 | |
| AT200716T | Austria | T | |
| ATE200716T1 | Austria | T1 | |
| DE69704599D1 | Germany | D1 | |
| DK0838793T3 | Denmark | T3 | |
| ES2157529T3 | Spain | T3 | |
| US6285912B1 | United States of America | B1 | |
| US6324008B1 | United States of America | B1 | |
| DE69704599T2 | Germany | T2 | |
| EP0838792B1 | European Patent Office (EPO) | B1 | |
| AT212463T | Austria | T | |
| ATE212463T1 | Austria | T1 | |
| DE69710019D1 | Germany | D1 | |
| DK0838792T3 | Denmark | T3 | |
| ES2171841T3 | Spain | T3 | |
| DE69710019T2 | Germany | T2 | |
| CA2218581C | Canada | C | |
| CA2168706C | Canada | C | |
| CA2218961C | Canada | C | |
| CA2168709C | Canada | C | |
| CA2168707C | Canada | C | |
| CA2168708C | Canada | C | |
| CA2218589C | Canada | C | |
| CA2168710C | Canada | C |
2 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Annulment or lapse due to non-payment of feesLapsedMM | MM | |
| Grant or registrationFG | FG |
Numbers
- Application
- 9707776
Titles2
- English
- MULTIFUNCTION OCCUPANCY SENSOR.
- Spanish
- SENSOR DE OCUPACION MULTIFUNCIONAL.
Classification
- CPC, 13
- G01K1/16
- G05B19/0425
- G08B13/19
- G08B13/193
- H05K1/0201
- H05K1/18
- G01J5/10
- G01J5/34
- G01J5/0806
- H05B47/18
- H05B47/105
- H05B47/13
- Y02B20/40
- IPC, 8
- G01J5 34
- G01K1 16
- G05B19 042
- G08B13 19
- G08B13 193
- H05B37 02
- H05K1 02
- H05K1 18