JP2014067497A - Human detection device having wireless communication function, and illumination control system including the human detection device and illumination control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly light an illumination device again in the case that the illumination device is extinguished regardless of that a human exists in a detection region of a human body detection sensor while suppressing consumption of a battery of the human body detection sensor, in: the human detection device having a wireless communication function; and an illumination control system including the human detection device and an illumination control device.SOLUTION: A human detection device comprises: a human body detection sensor 11 detecting that a human exists in a detection region; a brightness sensor 16 detecting brightness of a predetermined region; a human detection determination part 12A outputting a human detection signal at a first period time while determining that a human exists in the detection region; a wireless communication part 13 for transmitting a communication signal including the human detection signal to an illumination control device 2; and a brightness/darkness determination part 12B comparing an output of the brightness sensor 16 with a brightness/darkness determination threshold to determine brightness/darkness at a second period time, the second period being equal to or less than the first period. When the darkness is determined as a result of the brightness/darkness determination by the brightness/darkness determination part 12B, the human detection determination part 12A outputs the human detection signal independently of a lapse time from when the human detection signal is outputted the last time.

Description

  The present invention includes a human detection device that includes a human body sensor and transmits a control signal for controlling the lighting device to the lighting control device (wireless receiver) in response to detection of a human by the human body sensor. The present invention relates to a lighting control system including a human detection device and a lighting control device.

  2. Description of the Related Art Conventionally, a lighting control device that includes a human body sensor and turns on the lighting device when the human body sensor detects the presence of a person has been commercialized. A lighting control device having a human body sensor is installed on a construction surface (for example, a wall of a building entrance or a toilet) and detects the presence of a person in the detection area of the human body sensor. Light up. For example, a human body sensor using a pyroelectric element changes its output in accordance with a temperature change in the detection region. When the output from the human body sensor changes in a predetermined cycle T1, the control unit of the lighting control device resets the timer and turns on the lighting device for a predetermined lighting holding time. And while the output of a human body detection sensor continues changing, a lighting device will be in a lighting state.

  In the lighting control device having the initial human body sensor, the human body sensor is provided in the main body of the lighting control device (such as a lighting switch) installed on the construction surface. In some cases, the detection area of the human body sensor does not coincide with the area where it is actually desired to detect the presence of a person. On the other hand, there is a desire to replace an existing illumination control device that does not include a human body detection sensor with an illumination control device that includes such a human body detection sensor without performing complicated wiring work. Therefore, the present applicant separates the human detection device combining the human body sensor with the wireless transmitter from the lighting control device, and communication including the human detection signal between the human detection device and the lighting control device via wireless communication. An illumination control system that transmits and receives signals is proposed (Patent Document 1).

  The human detection device determines whether the human body detection sensor, the brightness sensor that detects the brightness of a predetermined area including the detection area of the human body sensor, and whether the human body detection sensor detects the presence of a person in the detection area. And a human detection determination unit that outputs a human detection signal when it is determined that a person is present in the detection region, a wireless communication unit that transmits a communication signal including the human detection signal, and a power source for driving them. It consists of a battery. When using infrared signals as a wireless communication means between the human detection device and the lighting control device, if there is an obstacle between the human detection device and the lighting control device, the transmission and reception of communication signals is performed reliably. There is a possibility not to be broken. Therefore, even if the human body sensor detects the presence of a person, the lighting device may not be turned on immediately. Therefore, in recent years, it has also been proposed to use specific low-power radio waves as wireless communication means between the human detection device and the illumination control device.

  Since the power of the human detection device is supplied from a built-in battery, it is necessary to reduce the consumption of the battery as much as possible. The power consumption by the human body sensor is very small, and the power consumption for transmitting the communication signal by the wireless transmission unit is much higher than the power consumption by the human body sensor. For this reason, the control unit of the human detection device drives the wireless transmission unit at a predetermined cycle T1 (for example, every several seconds) to illuminate the communication signal even when the human body sensor constantly detects the presence of a person in the detection region. Sending to the control unit. Further, when the brightness of the predetermined area detected by the brightness sensor is equal to or greater than the threshold value, the communication signal is not transmitted, thereby suppressing the battery consumption of the human detection device and the power consumption by the lighting device. Has also been proposed.

JP 2008-234940 A

  The lighting control device installed on the construction surface is provided with an operation handle operated by a person, and the lighting control device is set so as to preferentially perform lighting control according to the operation of the operation handle. When this lighting control system is installed, for example, in an office building toilet, locker room, hot water supply room, etc., even though a person exists in the detection area of the human body sensor, the operation handle may be operated by another person. It is often operated. As illustrated in FIG. 6, when the operation handle is operated while the lighting device is turned on, the lighting control device turns off the lighting device in accordance with the operation of the operation handle. However, when a person is present in the detection area of the human body sensor, the human body sensor continues to detect the presence of the person, and a communication signal including the human detection signal is continuously transmitted from the human detection device at a predetermined period T1. Then, when the received communication signal includes a human detection signal, the lighting control device turns on the lighting device again.

  As described above, when the predetermined period T1 for intermittently transmitting the communication signal is long, depending on the time Ts from when the human detection device transmits the communication signal until the operation handle is operated, It can remain unlit. If the lighting device is turned off, such as when there is no window in the room where the lighting control system is installed, the person inside the room gets stuck with the view blocked. In order to avoid such a situation, even if the lighting device is turned off, it is necessary to quickly turn it on again. Therefore, in such a use, it is also conceivable to transmit the communication signal promptly by shortening the drive interval of the wireless transmission unit in the human detection device as much as possible. In other words, if a communication signal is transmitted with the predetermined period T1 set to about the period of the commercial power supply, the person in the detection area will not even notice that the lighting device has been turned off.

  However, if the transmission cycle of the communication signal is shortened, the battery of the human detection device is consumed correspondingly. As described above, in the human detection device having the wireless communication function and the lighting control system including the human detection device and the lighting control device, the transmission period of the communication signal is increased in order to suppress the battery consumption of the human detection device. Then, even though the human body sensor detects the presence of a person, the lighting device is not turned on immediately, while the communication signal transmission period is shortened and the human body sensor detects the presence of a person. If the lighting device is swiftly turned on, there is a contradiction that the battery of the human detection device is consumed quickly.

  The present invention relates to a human detection device having a wireless communication function and an illumination control system including the human detection device and the illumination control device, and controls the human detection sensor in a detection region of the human body detection sensor while suppressing battery consumption. An object of the present invention is to promptly turn on the lighting device again when the lighting device is turned off in spite of the presence of.

In order to achieve the above object, a human detection device having a wireless communication function according to the present invention includes:
A human body sensor that changes its output signal when a person is present in a predetermined detection area;
A brightness sensor for detecting the brightness of a predetermined area including the detection area;
Based on the change in the output signal of the human body sensor, it is determined whether or not a person is present in the detection area, and a predetermined person is detected in the first period while it is determined that a person is present in the detection area. A human detection determination unit that outputs a signal;
A wireless communication unit that transmits a predetermined communication signal including the human detection signal to a lighting control device when the human detection signal is output from the human detection determination unit;
A light / dark determination unit that performs light / dark determination by comparing the output of the brightness sensor with a predetermined light / dark determination threshold in a second period equal to or less than the first period;
The human detection determination unit transmits the human detection signal regardless of an elapsed time since the previous human detection signal was output when it is determined to be dark as a result of the light / dark determination by the light / dark determination unit. And

In addition, a lighting holding time setting unit operated by a user, the communication signal further includes information on the lighting holding time set in the lighting holding time setting unit,
The first period is shorter than the lighting holding time,
It is preferable that the person detection determination unit determines the first period according to the lighting holding time.

Alternatively, the wireless communication unit receives a signal including information on a lighting holding time transmitted from the lighting control device,
The person detection determination unit preferably outputs the person detection signal in the first period shorter than the lighting holding time.

  Moreover, it is preferable that a light / dark determination threshold setting unit is further provided, and the light / dark determination threshold is determined by the light / dark determination threshold setting unit.

  Further, it is preferable that the apparatus further includes a memory that stores an output value of the brightness sensor, and the light / dark determination threshold setting unit determines the light / dark determination threshold based on a past output value of the brightness sensor.

The lighting control system according to the present invention is composed of a human detection device having a wireless communication function, a lighting control device connected between a commercial power source and the lighting device,
The human detection device provided with the wireless communication function,
A human body sensor that changes its output signal when a person is present in a predetermined detection area;
A brightness sensor for detecting the brightness of a predetermined area including the detection area;
Based on the change in the output signal of the human body sensor, it is determined whether or not a person is present in the detection area, and a predetermined person is detected in the first period while it is determined that a person is present in the detection area. A human detection determination unit that outputs a signal;
A first wireless communication unit that transmits a predetermined communication signal including the human detection signal to a lighting control device when the human detection signal is output from the human detection determination unit;
A light / dark determination unit that performs light / dark determination by comparing the output of the brightness sensor with a predetermined light / dark determination threshold in a second period equal to or less than the first period;
The human detection determination unit transmits the human detection signal regardless of the elapsed time since the previous human detection signal was output when it is determined to be dark as a result of the light / dark determination by the light / dark determination unit,
The lighting control device includes:
An operation handle operated by a user;
A main opening / closing part connected between the commercial power source and the lighting device;
A second wireless communication unit that receives the communication signal transmitted from the first wireless transmission unit;
When the operation handle is operated in a state where the lighting device is turned off, or when the human detection signal is included in the communication signal received by the second wireless reception unit, the main opening / closing unit is conducted. When the operation handle is operated in a state where the lighting device is turned on, or since the second wireless reception unit last received the communication signal including the human detection signal, the first period An illumination control unit is provided that turns off the main opening / closing unit when a long predetermined lighting holding time has elapsed.

  According to the present invention, when the illumination device is forcibly turned off by another person in a state where it is known from the output of the human body sensor that a person is present in the predetermined detection region, the human detection determination unit From the result of the light / dark determination by the determination unit, it can be seen that the lighting device is forcibly turned off. The human detection determination unit outputs the human detection signal regardless of the elapsed time from the previous transmission of the human detection signal, and the wireless transmission unit transmits a communication signal including the human detection signal. It can be quickly turned on again. Moreover, since the transmission cycle of the communication signal including the human detection signal is shortened only when the lighting device is forcibly turned off, it is possible to suppress the battery consumption of the human detection device.

The perspective view which shows the installation state of the illumination control system comprised with the illumination control apparatus connected between the human detection apparatus provided with the radio | wireless communication function which concerns on one Embodiment of this invention, and a commercial power supply, and an illuminating device. The front view which shows the external appearance of the main-body part of the said illumination control apparatus. Front sectional drawing which shows the structure of the said person detection apparatus. The figure which shows the block configuration of the said illumination control system. In the said illumination control system, it is a timing chart which shows operation | movement when a lighting apparatus is turned off although a person exists in the detection area | region of a human body sensor. In the conventional lighting control system, it is a timing chart which shows operation | movement when a lighting apparatus is light-extinguished although a person exists in the detection area of a human body sensor.

  A lighting control system including a human detection device having a wireless communication function according to an embodiment of the present invention, a lighting control device connected between a commercial power source and a lighting device will be described. FIG. 1 shows an installation state of the illumination control system according to the present embodiment, and FIG. 2 shows a front appearance of the illumination control device constituting the illumination control system. FIG. 3 shows a configuration of a human detection device having a wireless communication function that constitutes the illumination control system. Further, FIG. 4 shows a block configuration of an illumination control system composed of a human detection device and an illumination control device. FIG. 5 is a timing chart showing an operation when the lighting device is turned off in spite of the presence of a person in the detection area of the human body sensor in the lighting control system.

  As shown in FIG. 1, the lighting control system includes a human detection device 1 and a lighting control device 2 having a wireless communication function, and the human body sensor is separated from the main body of the lighting control device 2. In the example shown in FIG. 1, the lighting control device 2 is installed on the wall surface of the entrance / exit of the locker room, and is connected to the lighting device 3 via the wiring 4 installed on the back side of the wall surface. On the other hand, the human detection device 1 can be installed at an arbitrary place by a user, and is attached to a ceiling or the like with a double-sided adhesive tape, an adhesive, a screw, or the like. The human detection device 1 is driven by a built-in battery, and transmits and receives signals to and from the illumination control device 2 using radio waves. For this reason, wiring work between the human detection device 1 and the illumination control device 2 is not necessary.

  As shown in FIG. 2, the appearance of the lighting control device 2 is automatically operated when a user operates the operation handle 20 for turning on or off the lighting device 3 and the human body sensor detects the presence of a person. An operation mode changeover switch 21 for turning on / off the automatic mode for lighting the illumination device 3 is provided. In the present embodiment, as described later, since a communication signal including a human detection signal is transmitted and received by radio waves using specific low-power wireless communication, it is transmitted from the human detection device 1 via radio waves. The second wireless communication unit (wireless receiving unit) 22 that receives the communication signal does not appear in the appearance portion. Even if the operation mode changeover switch 21 is set to the automatic mode, the lighting control device 2 gives priority to the operation of the operation handle 20 and turns on or off the lighting device 3 when the operation handle 20 is operated.

  As shown in FIG. 3, the human detection device 1 includes, for example, a human body sensor (including a brightness sensor 16) 11 provided at the center of the housing 10, and a first controller 12 (a human detection determination unit 12 </ b> A and A light / dark determination unit 12B), a first wireless communication unit (wireless communication unit) 13, a battery 14, an antenna 15, and the like. The human body sensor 11 always detects whether or not a person is present in a predetermined detection area. The human body detection sensor 11 is, for example, a hot-wire infrared detection sensor, and its output signal changes when it receives infrared radiation emitted from a human body. That is, the presence of a person in a predetermined detection area is detected by changing the output of the human body sensor 11. When the output of the human body sensor 11 changes, the first control unit 12 functioning as the human detection determination unit 12A outputs a predetermined human detection signal. The brightness sensor 16 is an illuminance sensor, for example, and measures the brightness of a predetermined area including the detection area of the human body sensor 11. In the present embodiment, the brightness sensor 16 only needs to be able to detect that the lighting device 3 is turned off, and may be a luminance sensor that directly measures the luminance of the light source of the lighting device 3.

  By the way, since the human detection device 1 is driven by the power source of the battery 14, it is important to suppress the consumption of the battery 14. Therefore, the first control unit 12 functioning as the person detection determination unit 12A outputs a person detection signal at the first period T1 (for example, every several seconds). When the human detection signal is output from the first control unit 12, the first wireless communication unit 13 functions as a wireless transmission unit, and directs a predetermined communication signal including the human detection signal to the illumination control device 2 using radio waves. To send. The first control unit 12 includes a general CPU, ROM, RAM, and the like, and includes a timer function and a memory function. Even if the human detection signal is not output, other information such as a non-detection signal or a communication signal including brightness information is transmitted from the first wireless communication unit 13 to the illumination control device 2. May be.

  The lighting control device 2 forcibly turns on or turns off the lighting device 3 when the operation handle 20 is operated by the user, and receives the communication signal including the human detection signal from the human detection device 1. When the communication signal including the human detection signal is not received, the lighting device 3 is turned off after a predetermined lighting holding time has elapsed since the last reception of the communication signal including the human detection signal. Therefore, for example, a main opening / closing part 23 using a semiconductor switching element such as a triac is provided, and the main opening / closing part 23 is connected in series between the commercial power supply 4 and the lighting device 3. The illumination control device 2 includes a second wireless communication unit (wireless reception unit) 22 that receives a communication signal transmitted from the first wireless communication unit (wireless transmission unit) 13 of the human detection device 1, and an illumination control unit. A second control unit 24 that functions is further provided. The second control unit 24 drives the gate of the triac, for example, when the operation handle 20 is operated with the lighting device 3 turned off and when the second wireless communication unit 22 receives a communication signal including a human detection signal. The main opening / closing part 23 is made conductive by outputting a signal or the like. Thereby, a current flows through the lighting device 3 and the lighting device 3 is turned on. Further, the second control unit 24, for example, in the case of the triac when the operation handle 20 is operated while the lighting device 3 is turned on and when the second wireless communication unit 22 does not receive the communication signal including the human detection signal. The output of the gate drive signal to the gate is stopped, and the main opening / closing part 23 is made non-conductive. As a result, no current flows through the lighting device 3, and the lighting device 3 is turned off. The second control unit 24 includes a CPU, a ROM, a RAM, and the like, and has a timer function, a memory function, and the like.

  When the lighting control system is installed in a place where a person stays for a certain period of time, such as the entrance, toilet, hot water supply room, etc., in addition to the locker room, the human body sensor 11 continues to detect the presence of the person. . On the other hand, when the lighting control system is installed in a place where a person passes, such as a corridor or a staircase, the human body sensor 11 detects the presence of the person only once by the passage of the person. Therefore, when the second control unit 24 extracts the human detection signal from the communication signal received by the second wireless communication unit 22, the second control unit 24 lights the lighting device 3 for an arbitrary lighting holding time set by the user, and the predetermined time When the second wireless communication unit 22 newly receives a communication signal including a person detection signal, the timer count is reset.

  The lighting holding time can be arbitrarily set by the user by adjusting a lighting holding time setting unit (for example, a time adjustment volume or a rotary switch) 25. The lighting holding time setting unit 25 for setting the lighting holding time is provided on the illumination control device 2 side in FIG. 4, but may be provided on the human detection device 1 side. When the person detection device 1 is provided with a lighting holding time setting unit, the communication signal includes lighting holding time information together with a person detection signal for lighting the lighting device 3. On the other hand, when the lighting control device 2 is provided with a lighting holding time setting unit, the communication signal only needs to include at least a human detection signal for lighting the lighting device 3. By adjusting the lighting holding time setting unit, the lighting holding time can be set to an arbitrary time between several seconds to several tens of minutes, for example.

  The first wireless communication unit 13 and the second wireless communication unit 22 perform transmission / reception of communication signals by radio waves using, for example, specific low power wireless. In specific low-power radio, a specific frequency is shared by a plurality of radio communication devices. In the specific low power wireless communication, since the transmission output of the wireless signal is small, the second wireless communication unit 22 may not be able to reliably receive the signal depending on the radio wave environment. Therefore, the communication signal may be transmitted twice at the same frequency or at different frequencies.

  Next, in the lighting control system according to the present embodiment, the operation when the lighting device is turned off despite the presence of a person in the detection area of the human body sensor is referred to the timing chart shown in FIG. explain. When a person enters the detection area of the human body sensor 11, the output of the human body sensor 11 changes, and the first control unit 12 functioning as the human detection determination unit 12A determines that a person exists in the detection area from the change in the output. to decide. And the 1st radio | wireless communication part (wireless transmission part) 13 is started, and the communication signal containing a person detection signal is transmitted. At the same time, the first control unit 12 starts a timer and starts counting the first period T1. In parallel with this, the first control unit 12 functioning as the brightness determination unit 12B activates the brightness sensor 16 and in a second period T2 (for example, several milliseconds to several tens of milliseconds) equal to or less than the first period T1. The brightness determination is performed by comparing the output of the brightness sensor 16 with a predetermined brightness determination threshold.

  When the second wireless communication unit (wireless reception unit) 22 of the illumination control device 2 receives the communication signal including the person detection signal transmitted from the first wireless communication unit (wireless transmission unit) 13 of the person detection device 1, the illumination control is performed. The second control unit 24 functioning as a unit makes the main opening / closing unit 23 conductive. Thereby, a current flows through the lighting device 3 and the lighting device 3 is turned on. When the lighting device 3 is turned on, the output of the brightness sensor 16 changes, and the first control unit 12 determines that “dark” has changed to “bright” as a result of the light / dark determination. As long as the operation handle 20 is not operated and a person continues to exist in the detection area of the human body sensor 11, the light / dark determination is performed every second period T2, and the determination result indicates “bright”.

  By the way, when the operation handle 20 is operated even though a person continues to exist in the detection area of the human body sensor 11, the second control unit (illumination control unit) 24 immediately turns off the main opening / closing unit 23. Make it conductive. As a result, no current flows through the lighting device 3, and the lighting device 3 is turned off. When the lighting device 3 is turned off, the output of the brightness sensor 16 changes, and the first control unit 12 determines that “bright” has changed to “dark” as a result of the light / dark determination. Here, based on the output of the human body sensor 11, the first controller 12 functioning as the human body detection sensor 12A has determined that a person is present in the detection area of the human body sensor 11, so the previous human detection signal is output. The first wireless communication unit (wireless transmission unit) 13 is driven to transmit a communication signal including a human detection signal regardless of whether or not the elapsed time from the output, that is, whether or not the first period T1 has elapsed. When the second wireless communication unit (wireless reception unit) 22 receives a communication signal including a human detection signal, the second control unit (illumination control unit) 24 causes the main opening / closing unit 23 to conduct, thereby lighting the lighting device 3. .

  As described above, in the lighting control system according to the present embodiment, the human detection device 1 performs the light / dark determination using the output of the brightness sensor 16, and a person continues to exist in the detection area of the human body sensor 11. However, when the lighting device 3 is turned off, a communication signal including a human detection signal is immediately transmitted. As a result, as compared with the conventional lighting control system shown in FIG. 6, the time from when the lighting device 3 is turned off to when it is turned on can be shortened. Moreover, although the timing which transmits the communication signal containing a person detection signal becomes early only once immediately after the illuminating device 3 is light-extinguished, a communication signal is transmitted by 1st period T1 other than that. The power consumption by the brightness detection by the brightness sensor 16 and the light / dark judgment by the first control unit 12 is much smaller than the power consumption when the first wireless communication unit (wireless transmission unit) 13 transmits the communication signal. Therefore, the consumption of the battery 14 can be suppressed as compared with the case where the first period T1 for transmitting the communication signal is shortened. Note that the second period T2 in FIG. 5 is exaggerated, and actually the second period T2 (for example, several milliseconds to several tens of milliseconds) is much longer than the first period T1 (for example, several seconds). Short. Therefore, the time from when the lighting device 3 is turned off to when it is turned on again is about several tens of milliseconds, and it is dark enough for a moment.

  As described above, the lighting holding time can be arbitrarily set by the user by adjusting the lighting holding time setting unit 25. When the first period T1 for transmitting the communication signal is longer than the lighting holding time, the lighting device 3 is turned off before the second wireless communication unit 22 receives the communication signal including the next human detection signal. Therefore, the first period T1 must be shorter than the lighting holding time. In the present embodiment, an example in which the lighting holding time setting unit 25 is provided on the lighting control device 2 side is shown, and therefore information regarding the lighting holding time needs to be transmitted from the lighting control device 2 to the human detection device 1. . Therefore, the first wireless communication unit 13 and the second wireless communication unit 22 are set so that communication signals can be transmitted and received in both directions. The second control unit 24 of the illumination control device 2 drives the second wireless communication unit 22 at a predetermined cycle longer than the first cycle T1, and transmits information related to the lighting holding time to the human detection device 1. The first control unit 12 of the human detection device 1 stores information on the lighting holding time received via the first wireless communication unit 13 in a memory, and sets the first cycle T1 corresponding to the lighting holding time. . On the other hand, when the lighting holding time setting unit is provided on the human detection device 1 side, it is only necessary to transmit the communication signal including the lighting holding time information as described above. What is necessary is just to be able to transmit / receive a signal to the communication unit 22 in one direction.

  Generally, the lighting holding time can be arbitrarily set by the user within a range of several seconds to several tens of minutes. Therefore, for example, if a communication signal including a human detection signal can be received at least twice during the lighting holding time, even if the communication signal including the human detection signal cannot be received once due to a poor radio wave environment, illumination It is possible to prevent the device 3 from being turned off. By setting the optimal first period T1 according to the lighting holding time set by the user, the life of the battery 14 can be effectively extended. Depending on the user, the lighting holding time may be set extremely short. When the lighting holding time is set to a certain time, for example, 10 seconds or less, the value of the first period T1 may be fixed. According to such a user, since it is rare that a person stays in the detection range of the human body sensor 11 for a long time, the value of the first period T1 is set to a value of 1 second or less, for example, The brightness detection by the height sensor 16 and the light / dark determination by the first control unit 12 may be omitted. Even in such a case, even if the operation handle 20 is operated and the lighting device 3 is turned off, if a person is present in the detection range of the human body sensor 11, it is within a relatively short time (for example, within one second). ) The lighting device 3 is turned on again.

  In addition, when this lighting control system is installed in a room without a window, for example, when the lighting device 3 is turned off despite the presence of a person in the room, the person in the room is obstructed because the field of view is blocked. Resulting in. For this reason, it is necessary to quickly turn on the lighting device 3 again. On the other hand, when this illumination control system is installed in a room having a relatively large window and external light is inserted through the window, even if the illumination device 3 is turned off, the illumination device 3 is turned on again. Even if it takes a certain amount of time (for example, several seconds), people in the room are not so much trouble. Therefore, the human detection device 1 may be provided with a light / dark determination threshold setting unit, and the light / dark determination threshold may be variable. The dark determination threshold setting unit may be, for example, a threshold adjustment volume operated by a user, or may be executed by software by a CPU or the like constituting the first control unit 12. In the former case, when the human detection device 1 is installed, it is set according to the situation of the installation location. In the latter case, the output value of the brightness sensor 16 for each fixed time can be stored in the memory, and the light / dark determination threshold value can be determined based on the past output value of the brightness sensor 16. In other words, it is possible to cope with the outside light gradually becoming brighter or darker like sunrise or sunset.

  Further, the present invention is not limited to the description of the above embodiment, and various modifications can be made. For example, the human body detection sensor is not limited to the heat ray infrared detection sensor, and may be a human recognition sensor including an imaging device and an image processing device. As is well known, the hot-wire infrared detection sensor has an advantage that the structure is simple, but also has a drawback that it reacts even when a heat source other than a person such as a pet passes through the detection region. . A human recognition sensor including an imaging device and an image processing device has a disadvantage that the structure and image processing are complicated, but has an advantage that it does not react to a heat source other than a human. In the above embodiment, specific low-power wireless communication using radio waves is exemplified as the wireless communication means between the human detection device 1 and the illumination control device 2, but the same effect is achieved even with wireless communication using infrared rays. Play.

DESCRIPTION OF SYMBOLS 1 Person detection apparatus provided with wireless communication function (of illumination control system) 2 Lighting control apparatus of 3 (lighting control system) 3 Lighting apparatus 4 Commercial power supply 11 Human body sensor 12 )
13 First wireless communication unit (wireless transmission unit)
16 Brightness sensor 20 Operation handle 22 Second wireless communication unit (wireless receiving unit)
23 Main opening / closing part 24 Second control part (lighting control part)

Claims (6)

A human body sensor that changes its output signal when a person is present in a predetermined detection area;
A brightness sensor for detecting the brightness of a predetermined area including the detection area;
Based on the change in the output signal of the human body sensor, it is determined whether or not a person is present in the detection area, and a predetermined person is detected in the first period while it is determined that a person is present in the detection area. A human detection determination unit that outputs a signal;
A wireless communication unit that transmits a predetermined communication signal including the human detection signal to a lighting control device when the human detection signal is output from the human detection determination unit;
A light / dark determination unit that performs light / dark determination by comparing the output of the brightness sensor with a predetermined light / dark determination threshold in a second period equal to or less than the first period;
The human detection determination unit transmits the human detection signal regardless of an elapsed time since the previous human detection signal was output when it is determined to be dark as a result of the light / dark determination by the light / dark determination unit. A human detection device having a wireless communication function. Further comprising a lighting holding time setting unit operated by a user, the communication signal further includes information on the lighting holding time set in the lighting holding time setting unit,
The first period is shorter than the lighting holding time,
The human detection apparatus having a wireless communication function according to claim 1, wherein the human detection determination unit determines the first period according to the lighting holding time. The wireless communication unit receives a signal including information on a lighting holding time transmitted from the lighting control device,
The human detection apparatus having a wireless communication function according to claim 1, wherein the human detection determination unit outputs the human detection signal in the first period shorter than the lighting holding time.   The wireless communication function according to any one of claims 1 to 3, further comprising a light / dark determination threshold setting unit, wherein the light / dark determination threshold is determined by the light / dark determination threshold setting unit. Human detection device.   5. The memory according to claim 4, further comprising a memory for storing an output value of the brightness sensor, wherein the brightness determination threshold setting unit determines the brightness determination threshold based on a past output value of the brightness sensor. A human detection device having the wireless communication function described in 1. A lighting control system including a lighting control device connected between a human detection device having a wireless communication function, a commercial power source, and a lighting device,
The human detection device provided with the wireless communication function,
A human body sensor that changes its output signal when a person is present in a predetermined detection area;
A brightness sensor for detecting the brightness of a predetermined area including the detection area;
Based on the change in the output signal of the human body sensor, it is determined whether or not a person is present in the detection area, and a predetermined person is detected in the first period while it is determined that a person is present in the detection area. A human detection determination unit that outputs a signal;
A first wireless communication unit that transmits a predetermined communication signal including the human detection signal to a lighting control device when the human detection signal is output from the human detection determination unit;
A light / dark determination unit that performs light / dark determination by comparing the output of the brightness sensor with a predetermined light / dark determination threshold in a second period equal to or less than the first period;
The human detection determination unit transmits the human detection signal regardless of the elapsed time since the previous human detection signal was output when it is determined to be dark as a result of the light / dark determination by the light / dark determination unit,
The lighting control device includes:
An operation handle operated by a user;
A main opening / closing part connected between the commercial power source and the lighting device;
A second wireless communication unit that receives the communication signal transmitted from the first wireless transmission unit;
When the operation handle is operated in a state where the lighting device is turned off, or when the human detection signal is included in the communication signal received by the second wireless reception unit, the main opening / closing unit is conducted. When the operation handle is operated in a state where the lighting device is turned on, or since the second wireless reception unit last received the communication signal including the human detection signal, the first period An illumination control system comprising: an illumination control unit that renders the main opening / closing unit non-conductive when a long predetermined lighting holding time has elapsed.

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