JP2010033837A - Lighting control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve energy saving by suppressing electric power consumption by an active sensor in a lighting control system controlling lighting of an illumination apparatus on the basis of a detection result by the active sensor. <P>SOLUTION: The lighting control system 1 is equipped with the active sensor 2 detecting a movable body, the illumination apparatus 3 lighted on the basis of the detection result by the active sensor 2, a starting detection part 4 detecting start timing of the active sensor 2 on the basis of opening and closing of a door or brightness of a space, and a stopping detection part 31 detecting stop timing of stopping operation of the active sensor 2. The active sensor 2 is operated during a period from the start timing to the stop timing, and its operation is stopped during other periods. By this, the active sensor 2 can be operated when necessary, and consequently, the electric power consumption by the active sensor 2 can be suppressed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting control system that controls lighting of a lighting fixture based on a detection result by an active sensor that detects a moving body such as a person.

  2. Description of the Related Art Conventionally, there is known an illumination control system that detects a person using a human sensor and controls lighting of a lighting fixture based on the detection result (see, for example, Patent Document 1). In such a system, a passive sensor is generally used as a human sensor. The passive sensor detects humans by detecting infrared rays emitted from the human body. However, since the infrared rays are weak, if the passive sensor and the person are separated from each other, there is a risk of detection omission.

  Therefore, there is a demand to use an active sensor with high detection accuracy as a human sensor. The object to be detected by the active sensor is not limited to a person, and the active sensor transmits an electromagnetic wave, receives the reflected wave from the object to be detected, and detects the object to be detected according to the received wave intensity. Therefore, if the transmission intensity is increased, the reception intensity is increased accordingly, so that detection omission as in the case of a passive sensor can be suppressed.

However, in the case of an active sensor, it is necessary to continue emitting electromagnetic waves in order to detect a detection target. For this reason, compared with a passive sensor, although detection accuracy is high, power consumption increases.
JP 2002-289370 A

  The present invention has been made to solve the above-described conventional problems. When lighting control is performed on a lighting fixture based on the detection result of the active sensor, the power consumption by the active sensor is suppressed to save energy. An object of the present invention is to provide a lighting control system that can be realized.

  In order to achieve the above object, an invention according to claim 1 is an illumination control system comprising an active sensor that detects a moving object and a lighting fixture that lights up based on a detection result of the active sensor. A start detection unit for detecting a start timing for starting the active sensor, and a stop detection unit for detecting a stop timing for stopping the operation of the active sensor, wherein the active sensor is detected by the start detection unit. The period from the activated start timing to the stop timing detected by the stop detection unit is operated, and the operation is stopped during the other periods.

  According to a second aspect of the present invention, in the illumination control system according to the first aspect, the activation detection unit has a door opening / closing sensor that detects opening / closing of a door provided at an entrance of a space where the system is installed. is there.

  According to a third aspect of the present invention, in the illumination control system according to the second aspect, the activation detection unit further includes a brightness sensor that detects the brightness of a space in which the system is installed.

  According to a fourth aspect of the present invention, in the illumination control system according to any one of the first to third aspects, the stop detection unit includes a timer, and the stop timing is determined with the passage of a predetermined holding time. To do.

  According to a fifth aspect of the present invention, in the illumination control system according to the first or second aspect, the activation detection unit includes a brightness sensor that detects the brightness of a space in which the system is installed, and the stop The detection unit has a timer, counts a predetermined holding time by the timer, sets the stop timing when the holding time has elapsed, and resets the counting of the holding time based on the detection result by the brightness sensor Is.

  According to the first aspect of the present invention, when the lighting apparatus is controlled to be turned on based on the detection result of the active sensor, the active sensor can be operated only when necessary. Can be achieved.

  According to the invention of claim 2, since the active sensor can be activated by detecting the opening / closing of the doorway of the space where the system is installed, the active sensor is operated by predicting that the moving body enters the space. Can be made.

  According to the invention of claim 3, since the brightness of the space where the system is installed is detected, the lighting of other lighting fixtures is detected, and based on that, it is predicted that the moving body will enter the space. The active sensor can be operated.

  According to the fourth aspect of the invention, since the stop timing of the active sensor is determined with the elapse of a predetermined holding time, the operation time of the active sensor can be controlled easily and uniformly.

  According to the fifth aspect of the present invention, when the brightness sensor detects the brightness, the count of the predetermined holding time for starting the active sensor can be reset. Can do.

  Hereinafter, an illumination control system according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a configuration of a lighting control system according to the present embodiment. The illumination control system 1 includes an active sensor 2 (hereinafter referred to as a sensor 2) that detects a moving body, and a plurality of lighting fixtures 3A and 3B that are attached to the sensor 2 and that are turned on based on the detection result of the sensor 2. 3C (hereinafter collectively referred to as lighting fixture 3) and an activation detection unit 4 that detects activation timing for activating the sensor 2 based on a change in physical quantity. The mobile body includes a person or a car. The luminaire 3 has a stop detection unit that detects a stop timing for stopping the operation of the sensor 2, is fixed to a ceiling or the like of a space in the building where the lighting control system 1 is installed, and communicates with each other to interlock. The signal lines 5 are connected so that they can be made. The activation detection unit 4 includes a door opening / closing sensor 41 that detects opening / closing of the door provided at the entrance / exit G1 of the building as a physical quantity change, and a brightness that is attached to each lighting fixture 3 and detects a change in brightness of the space as a physical quantity change. Sensor 42. Although three lighting fixtures 3 are shown in the figure, the number is not limited to this.

  The sensor 2 operates during the period from the start timing to the stop timing, and stops operating during other periods. The sensor 2 can be composed of a moving body detection sensor such as a Doppler sensor that detects a moving body, for example. The Doppler sensor transmits radio waves of a predetermined frequency, electromagnetic waves such as infrared rays or microwaves, detects a moving body using the Doppler effect of reflected waves, and outputs a detection signal. The configuration of the sensor 2 is not limited to the above, and the sensor 2 may be configured to be able to detect a stationary body.

  FIG. 2 shows the configuration of the lighting fixture 3B as an example among the lighting fixtures 3A to 3C, and further shows the configuration of the activation detection unit 4. The lighting fixtures 3A and 3C have the same configuration as the lighting fixture 3B. The luminaire 3B includes the stop detection unit 31 described above, a light source 32, a lighting circuit 33 that turns on the light source 32 and adjusts its light output, a switching circuit 34 that turns on and off the power of the sensor 2, and an activation detection. The communication circuit 35 which can communicate with the part 4 and the other lighting fixture 3, and the control part 36 comprised by the microprocessor etc. which control the operation | movement of the stop detection part 31 and said each circuit are provided.

  The stop detection unit 31 includes a timer 31a and a microprocessor 31b. The microprocessor 31b counts a predetermined sensor activation time (holding time) with the timer 31a, and uses the passage of the sensor activation time as the stop timing of the sensor 2. The microprocessor 31b resets the count when brightness is detected by the brightness sensor 42 during the sensor activation time count. The microprocessor 31b may be configured by the microprocessor of the control unit 36.

  The control unit 36 receives a detection signal from the door opening / closing sensor 41 or the brightness sensor 42, recognizes the reception time as the activation timing of the sensor 2, and activates the sensor 2. When receiving the detection signal from the door opening / closing sensor 41, the control unit 36 immediately sends an instruction signal instructing start of counting of the sensor activation time to the stop detection unit 31. When the control unit 36 receives the detection signal from the brightness sensor 41, the control unit 36 detects the stop of the instruction signal when the next detection signal from the brightness sensor 42 is not received for a predetermined period after the reception. To the unit 31. The control unit 36 instructs the stop detection unit 31 to reset the count when receiving a detection signal from the brightness sensor 42 while the sensor detection time is being counted by the stop detection unit 31.

  Further, the control unit 36 has a timer. When the sensor 2 detects the moving body during the activation of the sensor 2, the control unit 36 turns on the light source 32, and then the predetermined time from when the moving body cannot be detected. Start measuring the lighting holding time with a timer. When the detection signal from the sensor 2 is received again during the lighting holding time count, the control unit 36 resets the lighting holding time count. The control unit 36 turns off the light source 32 with the passage of the lighting holding time. Further, the control unit 36 stops the operation of the sensor 2 when receiving a signal transmitted from the stop detection unit 31 and indicating the stop timing of the sensor 2.

  The activation detection unit 4 includes a door open / close sensor 41, a brightness sensor 42, and a transmission circuit 43 that wirelessly transmits a detection signal to the communication circuit 35 of the lighting fixture 3 when the door open / close sensor 41 detects the door open / close. The brightness sensor 42 detects when the brightness exceeds a predetermined threshold, and sends the detection signal to the communication circuit 35 of the lighting fixture 3. The detection signal from the activation detection unit 4 indicates the activation timing of the sensor 2.

  Next, an operation example of the illumination control system 1 configured as described above will be described with reference to FIG. 3 in addition to FIG. 1 and FIG. Here, it demonstrates paying attention to lighting fixture 3B among lighting fixtures 3A-3C.

  FIG. 3 shows a time chart of each part of the illumination control system 1. When a person opens and closes the door of the entrance G1 of the building, (1) the door opening / closing sensor 41 of the activation detection unit 4 detects it. (2) Upon receiving this detection, the sensor 2 is activated, and (3) the stop detection unit 31 starts counting the sensor activation time.

  (4) When the sensor 2 detects a moving body during activation, (5) the light source 32 is turned on based on the detection. While the moving body is detected by the sensor 2, the light source 32 continues to be lit, and (6) when the sensor 2 stops detecting the moving body, (7) the control unit 36 starts counting a predetermined lighting holding time. (8) If the sensor 2 detects the moving body again during the counting, (9) the lighting holding time count is reset.

  While the light source 32 is lit, (10) the brightness sensor 42 of the activation detection unit 4 continues to detect the brightness of the light source 32. (11) When the lighting holding time of the light source 32 elapses, (12) the light source 32 is turned off, and (13) the brightness sensor 42 cannot detect the brightness by the light source 32. (14) The stop detection unit 31 starts counting the sensor activation time based on the non-detection by the brightness sensor 42. (15) If the sensor 2 detects a moving object during the counting, (16) the light source 32 is turned on again, and (17) the brightness sensor 42 detects the brightness. Thereafter, (18) when the sensor 2 can no longer detect the moving body, (19) the control unit 36 starts counting the lighting holding time.

  (20) After the elapse of the lighting holding time, (21) the stop detection unit 31 starts counting the sensor activation time again. (22) When the sensor activation time has elapsed, (23) the sensor 2 stops operating.

  After the operation of the sensor 2 is stopped, (24) when the brightness sensor 42 detects brightness by light from another lighting fixture 3 or the like instead of the own device, (25) the sensor 2 is activated in response thereto. Thereafter, (26) when the brightness sensor 42 cannot detect the brightness, (27) the stop detection unit 31 starts counting the sensor activation time. (28) After the sensor activation time has elapsed, (29) the sensor 2 stops operating.

  Next, the operation of the entire lighting control system 1 including the lighting fixtures 3A and 3C will be described with reference to FIGS. 4A to 4D show operation charts when a car C1 carrying a person enters the building where the lighting control system 1 is installed from the entrance G1. FIGS. 5A to 5C show operation charts when the sensor 2 stops detecting the detection object after the sensor 2 detects the vehicle C1 and the lighting fixture 3 is turned on. 4 and 5, the illustration of the building illustrated in FIG. 1 and the support member of the lighting fixture 3 is omitted.

  Here, it is assumed that the lighting fixtures 3A, 3B, and 3C are sequentially arranged from the side closer to the doorway G1. It is assumed that the lighting fixture 3A is installed within a range in which a detection signal from the door opening / closing sensor 41 can be wirelessly received, and the lighting fixtures 3B and 3C are set outside the range. In addition, the distance between each of the lighting fixtures 3A to 3C is set such that the brightness sensor 42 cannot detect the brightness due to lighting of the lighting fixtures 3 other than its own device. Also, before the vehicle C1 enters the building, the sensor 2 stops operating, and the lighting fixtures 3A to 3C are turned off.

  As shown in FIG. 4A, when a person on the car C1 opens the door of the doorway G1, (1) the door opening / closing sensor 41 detects opening / closing of the door. (2) The lighting fixture 3 </ b> A receives the detection signal from the door opening / closing sensor 41 and activates the sensor 2. In the figure, the detection range by the sensor 2 is indicated by a broken line.

  As shown in FIG. 4B, (3) when the vehicle C1 moves in the vicinity of the lighting fixture 3A, the sensor 2 of the lighting fixture 3A detects the vehicle C1, and (4) the lighting fixture 3A is turned on. Also, the lighting fixture 3A transmits a lighting instruction signal to the lighting fixtures 3B and 3C via the signal line 5. The lighting fixture 3A starts counting the lighting holding time after the sensor 2 no longer detects the vehicle C1. (5) The lighting fixtures 3B and 3C are lit by receiving the lighting instruction signal, and start counting the lighting holding time. (6) Moreover, in each of lighting fixture 3B, 3C, the brightness sensor 42 detects the brightness by lighting of an own device, (7) The sensor 2 starts based on the brightness detection.

  As shown in FIG. 4C, when the vehicle C1 moves to the vicinity of the lighting fixture 3B, (8) the sensor 2 of the lighting fixture 3B detects the moving vehicle C1, and (9) the lighting fixture 3B is turned on. The count of the holding time is reset, and re-counting is started when no detection is detected.

  As shown in FIG. 4D, when the vehicle C1 passes the vicinity of the lighting fixture 3B and moves to the lighting fixture 3C, (10) the sensor 2 of the lighting fixture 3C detects the moving vehicle C1, and (11) The lighting fixture 3C resets the count of the lighting holding time, and starts recounting when it is not detected.

  After that, as shown in FIG. 5A, when the detection object cannot be detected by each sensor 2 of the lighting fixtures 3A to 3C, as shown in FIG. 5B, (12) First, the lighting fixture 3A. Turns off after the lighting holding time elapses. As shown in FIG. 4 (b), the lighting fixtures 3A to 3C are turned on all at once and start counting the lighting holding time, but as shown in FIGS. 4 (c) and 4 (d). Furthermore, the lighting fixtures 3B and 3C reset the count on the way. After the lighting fixture 3A is turned off, the lighting fixtures 3B and 3C follow the order in which the lighting holding time starts to be recounted. (13) First, the lighting fixture 3B is turned off, (14), and then the lighting fixture 3C is turned off.

  When the lighting fixtures 3A to 3C are turned off, as shown in FIG. 5C, the brightness sensor 42 attached to them does not detect the brightness. In response to this, each of the lighting fixtures 3A to 3C starts counting the sensor activation time, and (15) First, the operation of the sensor 2 attached to the lighting fixture 3A stops, as in the above-described turn-off sequence. ) Next, the operation of the sensor 2 attached to the luminaire 3B is stopped, and (17) Finally, the operation of the sensor 2 attached to the luminaire 3C is stopped.

  As described above, in the present embodiment, the sensor 2 can be operated only when necessary to control lighting of the lighting fixture 1 based on the detection result of the sensor 2, so that the power consumption by the sensor 2 is reduced. Energy saving can be achieved by suppressing.

  Further, since the sensor 2 can be activated by detecting the opening / closing of the doorway G1 of the space where the illumination control system 1 is installed, the sensor 2 is operated in advance by predicting that the moving body enters the space. be able to. Therefore, the detection failure by the sensor 2 can be prevented and the lighting fixture 1 can be turned on reliably.

  In addition, since the start time of the predetermined sensor 2 is counted by the timer 31a and the stop timing of the sensor 2 is determined as the time elapses, the operation time of the sensor 2 can be controlled easily and uniformly.

  Further, when the brightness is detected by the brightness sensor 42, the count of the activation time of the predetermined sensor 2 is reset, so that it is possible to prevent the operation of the sensor 2 from stopping while the lighting fixture 3 is lit. Therefore, it is possible to prevent a detection omission from occurring in a situation where the detection target of the sensor 2 is in the detection area while the lighting fixture 3 is lit. Therefore, in the above situation, the lighting holding time count can be reset based on the detection result, and the lighting fixture 3 can be prevented from being turned off due to the passage of the lighting holding time.

  Next, modified examples of the illumination control system of the present embodiment will be described with reference to FIGS. Since the components of the present modification are substantially the same as those in the above embodiment, description will be made with reference to FIG. FIG. 6 shows an illumination control system according to this modification. Unlike the above-described embodiment, the lighting fixture 3 of this modification is not connected to the other lighting fixtures 3 by the signal line 5, and the communication circuit 35 is a wireless communication circuit capable of wirelessly communicating with the other lighting fixtures 3. Composed.

  FIGS. 7A to 7C and FIGS. 8A and 8B show a case where a car C1 carrying a person enters the building where the lighting control system 1 according to the present modification is installed from the entrance G1. A series of operation charts are shown. Here, it is assumed that the lighting fixture 3A is installed within a range in which a detection signal from the door opening / closing sensor 41 can be wirelessly received, and the lighting fixtures 3B and 3C are set outside the range. Further, the distance between each of the lighting fixtures 3A to 3C is set to such a distance that the brightness sensor 42 can detect the brightness due to the lighting of the other lighting fixtures 3. Also, before the vehicle C1 enters the building, the sensor 2 stops operating, and the lighting fixtures 3A to 3C are turned off.

  As shown in FIG. 7A, when a person on the car C1 opens the door of the doorway G1, (1) the door opening / closing sensor 41 detects opening / closing of the door. (2) The lighting fixture 3A receives the detection signal from the door opening / closing sensor 41, turns on the power of the sensor 2, and activates the sensor 2. In the figure, the detection range by the sensor 2 is indicated by a broken line.

  As shown in FIG. 7 (b), (3) when the vehicle C1 moves in the vicinity of the lighting fixture 3A, the sensor 2 of the lighting fixture 3A detects the vehicle C1, (4) the lighting fixture 3A is lit, and The counting of the lighting holding time starts when the sensor 2 stops detecting the car C1. When the lighting fixture 3A is turned on, the brightness near the lighting fixture 3B becomes brighter. (5) The brightness sensor 42 attached to the lighting fixture 3B detects light due to the lighting of the lighting fixture 3A. (6) The lighting fixture 3B activates its own sensor 2 based on the detection by the brightness sensor 42.

  As shown in FIG. 7C, when the vehicle C1 moves in the vicinity of the lighting fixture 3B, (7) the sensor 2 attached to the lighting fixture 3B detects the vehicle C1, and (8) illumination is triggered by the detection. The instrument 3B lights up. Then, the lighting fixture 3B starts counting the lighting holding time from when the sensor 2 no longer detects the car C1. When the lighting fixture 3B is turned on, the brightness near the lighting fixture 3C becomes brighter. (9) The brightness sensor 42 attached to the lighting fixture 3C detects light generated by lighting of the lighting fixture 3B. (10) The lighting fixture 3C activates its own sensor 2 based on this brightness detection.

  Thereafter, as shown in FIG. 8A, when the vehicle C1 moves in the vicinity of the lighting fixture 3C, (11) the sensor 2 attached to the lighting fixture 3C detects the vehicle C1, and (12) triggers the detection. The lighting fixture 3C is turned on. Then, the lighting fixture 3C starts counting the lighting holding time from when the sensor 2 no longer detects the vehicle C1. And (13) 3 A of lighting fixtures which lighted initially and the lighting holding time passed have gone out. When the lighting fixture 3A is turned off, the brightness sensor 42 attached thereto does not detect the brightness. In response to this, the lighting fixture 3A starts counting the sensor activation time.

  And as FIG.8 (b) shows, (14) lighting fixture 3B which the lighting holding time passed passes out. (15) The lighting fixture 3A stops the operation of the sensor 2 when the above-described sensor activation time has elapsed. Thereafter, although not shown, similarly to the operation of the lighting fixtures 3A and 3B, the lighting fixture 3C is turned off, and the lighting fixtures 3B and 3C stop the operation of the sensor 2 of the device itself.

  In this modified example, the brightness sensor 42 detects the lighting of the other adjacent lighting fixtures 3, and based on that, predicts that the moving body will move to the vicinity of the own device, and detects the sensor 2 of the own device. It can be activated in advance. Therefore, the detection omission by the sensor 2 can be prevented, and the lighting fixture 3 can be reliably turned on.

  Moreover, since the brightness sensor 42 detects the brightness of the space in which the illumination control system 1 is installed, it detects the lighting of other lighting fixtures and the like outside the space, and based on that, the moving body enters the space. The sensor 2 can be operated in anticipation of entry.

  In addition, this invention is not limited to the structure of said embodiment, A various deformation | transformation is possible according to a use purpose. For example, the number of lighting fixtures 3 may be one instead of a plurality. In addition, the activation detection unit 4 may be configured by only one of the door opening / closing sensor 41, the transmission circuit 43, and the brightness sensor 42.

The block diagram of the illumination control system which concerns on one Embodiment of this invention. The electric block diagram of the said illumination control system. The time chart in the said illumination control system. (A)-(d) is an operation | movement chart of the said illumination control system. (A)-(c) is an operation | movement chart of the illumination control system following the operation | movement of the said FIG. The block diagram of the illumination control system which concerns on the modification of the said embodiment. (A)-(c) is an operation | movement chart of the said illumination control system. (A) and (b) are the operation | movement charts of the illumination control system following the operation | movement of the said FIG.

Explanation of symbols

1 Lighting control system 2 Sensor (active sensor)
3, 3A, 3B, 3C Luminaire 31 Stop detector 31a Timer 4 Start detector 41 Door open / close sensor 42 Brightness sensor G1 Entrance / exit

Claims (5)

In an illumination control system comprising: an active sensor that detects a moving body; and a lighting device that lights based on a detection result of the active sensor.
An activation detection unit for detecting activation timing for activating the active sensor based on a physical quantity change;
A stop detection unit for detecting a stop timing for stopping the operation of the active sensor,
The active sensor operates during a period from a start timing detected by the start detection unit to a stop timing detected by the stop detection unit, and stops operating during other periods. .   The lighting control system according to claim 1, wherein the activation detection unit includes a door opening / closing sensor that detects opening / closing of a door provided at an entrance of a space where the system is installed.   The illumination control system according to claim 2, wherein the activation detection unit further includes a brightness sensor that detects brightness of a space in which the system is installed.   The lighting control system according to any one of claims 1 to 3, wherein the stop detection unit includes a timer and sets the stop timing when a predetermined holding time elapses. The activation detection unit includes a brightness sensor that detects the brightness of a space in which the system is installed,
The stop detection unit has a timer, counts a predetermined holding time by the timer, and determines the stop timing when the holding time has elapsed, and counts the holding time based on the detection result by the brightness sensor. The lighting control system according to claim 1, wherein the lighting control system is reset.

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