JPH05111077A - Integrated monitor and control system - Google Patents

Abstract

PURPOSE:To effectively utilize a crime prevension system for the control of other systems in the daytime. CONSTITUTION:A human body detecting system A is provided with plural sensors 1. An inherent address is set up in each sensor 1. These sensors 1 are connected to a two-wire type transmission line and a control device 6 for individually judging the human body detecting state of each sensor 1 is connected to these sensors 1. At night, the system A is used for crime prevension. In the daytime, an illumination control system B controls the lighting of a lighting equipment 2 in accordance with the human body detecting status of the system A. The operation control of an air conditioner 3 in an air condition control system C is also executed in accordance with the human body detecting status of the system A. The switching of the system A to crime prevension or control information transmission is executed by storing a prescribed key in a key box 4 by a key management system D.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated supervisory control system including a plurality of systems including at least a human body detection system.

[0002]

2. Description of the Related Art As a conventional monitoring and control system, a plurality of terminals each having a unique address are connected to a master unit through a transmission line, and the master unit accesses the address data of a transmission signal. Address is set, each terminal is accessed individually, control data is given, the operation of the load is controlled by the terminal, and the operation status of the load is indicated from each terminal during the return signal period provided in the transmission signal. There is one that sends back monitoring data and centrally monitors the operating status of each load at the master unit.

In addition to this type of system, there is a security system. In this crime prevention system, a plurality of sensors for detecting the human body are respectively arranged at necessary places, and when the human body is detected by any of the sensors, an alarm indicating that an intruder is present is issued. There is.

[0004]

However, the conventional crime prevention system is generally used only at night and not during the daytime. Therefore, it is desired to use the crime prevention system for control of other systems even in the daytime so as to effectively utilize the system and to reduce the total system cost in combination with the other system.

The present invention has been made in view of the above points, and it is an object of the present invention to use the above-mentioned crime prevention system for controlling other systems effectively during the daytime, and An object of the present invention is to provide an integrated supervisory control system that can reduce the overall system cost in combination with the system.

[0006]

In order to achieve the above-mentioned object, a plurality of sensors as a terminal device for detecting a human body and having unique addresses are set, and a plurality of these sensors are provided. A human body detection system consisting of a master unit that is connected by a two-wire transmission line and individually determines the human body detection status of each sensor, load devices such as multiple lighting fixtures and multiple air conditioners, and the operation of these load devices At least a load control system consisting of a master unit that performs control and a key management system that manages the presence or absence of a key in the key box, and the human body detection system described above is used for crime prevention and the human body detection of each sensor in the load control system. The information indicating the situation is transmitted, and is used in a switching manner for transmission of control information for controlling the operation of the load device of the load control system. For the crime prevention of the human body detection system and the transmission of control information. Whether switching is used as either the use, a predetermined key is carried out by being housed in the key box in the key management system.

The invention according to claim 2 achieves the above object.
Human body detection is performed to set each unique address.
A plurality of sensors as fixed terminals and a plurality of these
Sensor is connected by 2-wire type transmission line
A human body detection system consisting of a base unit that individually determines the intellectual situation
System, load devices such as multiple lighting fixtures and multiple air conditioners, and
And a master unit that controls the operation of these load devices
A human body detection system including at least a control system;
System for crime prevention and human body inspection of each sensor in the load control system.
It transmits information indicating the intellectual situation and
Switched for transmission of control information that controls the operation of cargo equipment.
Used as a substitute for crime prevention and control information of the human body detection system
The timer can be used to switch between
I am using.

According to the invention of claim 2, claim 3
As shown in FIG. 5, the switching between the crime prevention of the human body detection system and the transmission of control information may be switched to the crime prevention when the human body is no longer detected in the human body detection system. . Further, in the invention of claim 2, as described in claim 4, when the human body detection system is used for transmission of control information, a function of detecting exit of the last leaving person is provided, and the human body detection system is provided. The switching of whether to use for crime prevention or for transmission of control information may be switched to crime prevention after the final leaving person exits.

[0009]

In the present invention, with the above-described configuration, the human body detection system used as a crime prevention system at night is used for detecting the presence of a human body in a specific space, and the lighting is automatically turned on according to the human body detection situation. The security system can be controlled, and the security system can be effectively used by controlling the other systems during the daytime, and the security system can be organically combined with the lighting control system to reduce the total system cost. It was done like this.

[0010]

1 to 9 show an embodiment of the present invention. As shown in FIG. 1, the integrated supervisory control system of the present embodiment,
A human body detection system A including a plurality of sensors 1 that function as a crime prevention system at least at night, a lighting control system B that controls lighting of a plurality of lighting fixtures 2, and an air conditioning control system that controls operation of a plurality of air conditioners 3. It is constructed by combining multiple systems such as C. As other systems, a key management system D that manages the storage status of keys in the key box 4 and a sign system E that displays the usage status of a conference room, reception room, etc. on a plurality of display devices 5 are provided. There is. The system configuration of FIG. 1 is merely an example, and it goes without saying that other systems may be combined.

Each of the systems A to E is provided with a control device 6 to 10 composed of a CPU as a master unit, and each of the control devices 6 to 10 is a bus type transmission line L _0.
It is connected to a central control unit 11 composed of a CPU that performs comprehensive monitoring control of E to E or signal transmission control. In the following description, the control devices 6 to 10 of the above systems
Will be collectively referred to as a master unit.

The sensor 1, the lighting fixture 2, the air conditioner 3, the key box 4 and the display 5 have a function as a terminal of a so-called multiplex transmission system, and each has a unique address. .. In the following description, when these devices are collectively called, they will be called terminals. In addition, the setting of each unique address is provided by the DIP switch or E ² PROM provided in the part that functions as a terminal.
It can be set at any time, and can be set or changed at any time.

Then, each of the above-mentioned terminals is connected to each system.
2-wire transmission line L₁~ L _FiveConnect with
Each terminal can be accessed individually to control and operate the terminal.
The work status can be monitored. Where each
Transmission signal V sent from the base unit of the stems A to E to each terminal
_SIs a start signal indicating the start of signal transmission, as shown in FIG.
Pulse ST, mode data MD indicating signal mode,
Address indicating the address (8 bits) of the terminal to access
Data AD, load (in the case of this embodiment, the terminal itself is negative
Control data CD indicating the control content for controlling the
Checksum data CS for detecting transmission error and
Return signal period WT that sets the return waiting period from the terminal
Pulse-width modulated bipolar (± 24V) time division
It is transmitted by multiple signals.

Normally, the master unit sequentially transmits the transmission signal to each terminal unit to perform signal transmission. That is, when the master unit controls the operation of a specific terminal, the address of the corresponding terminal is set in the address data AD of the transmission signal, and the transmission signal is sent to each terminal. Then, when the address set in the address data AD of the transmission signal coincides with its own address, each terminal takes in the transmission signal and reads the contents of the control data CD following the address data AD.
Then, it operates according to the contents of the control data CD. For example, in the lighting control system, lighting and extinguishing control of the lighting fixture 2 (including dimming control in some cases) are performed, and in the air conditioning control system, operation and stop control of the air conditioner 3 (in this embodiment, the strength of the operating state is strong or weak). (Including variable control). Then, during the return signal period WT following the control data CD, the monitoring data indicating the operation status is returned to the parent device. For example, in the case of the human body detection system A, the control device 6 can determine the human body detection status of each sensor 1 from this monitoring data, and the key management system D can display the storage status of the keys in the key box 4. The control device 7 can make the determination.

In the case of controlling the operation of a plurality of terminals, the master unit sequentially sets the address data AD in a variable manner according to the corresponding terminal, and controls the operation of the plurality of terminals in the same manner as the above case. Are performed sequentially. By doing so, the operations of the terminals can be centrally controlled by the master devices A to E of each system, and the operational status can be centrally monitored. By the way, in this type of multiplex transmission system, when the terminal urgently wants to send a return signal to the master unit, as shown in FIG. 2, it is synchronized with the start pulse ST and shown in FIG. It is possible to return the monitoring data and the like even if the master unit does not make a selection by transmitting the interrupt pulse Vi and issuing an interrupt request.

At this time, the master unit receiving the interrupt pulse Vi sets the mode signal MD of the transmission signal in the interrupt address polling mode and transmits it to specify the interrupt request terminal unit. When the interrupt request terminal is specified, the master sets the mode signal MD of the transmission signal to the monitor mode, sets the address of the interrupt request terminal to the address signal AD, and sets the interrupt request terminal. Receive a return signal from. Upon receiving this return signal, the master sets the mode signal in the response mode and transmits it to the interrupt request terminal, stops the transmission of the interrupt pulse Vi from the interrupt request terminal, and ends the interrupt processing. To do.

The above is a description of signal transmission for each of the systems A to E, but for the overall supervisory control system as a whole,
The master unit of each of the systems A to E is the terminal unit in the case of the above-mentioned signal transmission, and the central control unit 11 is the master unit. That is, in the case of the present embodiment, the entire system is configured to transmit information by multiplex transmission. However, in some cases, some of the systems may be systems that do not perform multiplex transmission.

In the integrated supervisory control system of this embodiment, the respective systems A to E are organically connected. For example, the result of monitoring the human body detection status of each sensor 1 by the human body detection system A is given to the lighting control system B and the air conditioning control system C. The monitoring result of the human body detection sensor A is given to the sign system E. For example, when the monitoring result of the human body detection status of each sensor 1 by the human body detection system A is given to the lighting control system B and the air conditioning control system C as described above, the human body detection system A used as a crime prevention system at night is specified. It can be used to detect the presence of a human body in space. By doing so, the lighting control system B can perform automatic lighting control of the lighting fixture 2 in accordance with the monitoring result indicating the human body detection status of the human body detection system A. Further, in the air conditioning control system C, the air conditioner 3 can be automatically operated according to the monitoring result of the human body detection system A.

By the way, each sensor 1 of the human body detection system A is provided in plural in a specific space, for example, in each room,
If the lighting device 2 is turned on according to the human body detection condition of the sensor 1, that is, the lighting device 2 in a predetermined area corresponding to the sensor 1 detecting the human body is turned on, it is possible to detect the presence of a person. Instead, the lighting device 2 is not turned on unnecessarily (so-called thinning-out lighting can be performed), and thus an energy saving effect can be expected. Further, the air conditioner 3 can be similarly thinned out.

This point will be described with reference to FIG. here,
An outer frame surrounding the whole shows a space to which this comprehensive monitoring and control system is applied, and each of the partitioned spaces a to f shows a specific space such as a room. Then, in each of the specific spaces a to f,
A plurality of sensors 1 indicated by circles are arranged. Now, assuming that the human body is detected by the shaded sensor 1 of the space c in the figure, the lighting fixture 2 corresponding to this sensor 1 is turned on. In addition, at the time of this lighting, you may use the pattern control which carries out batch lighting control of several arbitrary lighting fixtures. For example, when the output of any one of the sensors 1 is obtained, a plurality of lighting fixtures 2 for only a predetermined block in a specific space are provided.
May be turned on, or the lighting fixture 2 may be turned on alternately. In addition, when there are a plurality of air conditioners 3 in this space, the air conditioner 3 is operated in a state in which the area where the human body is detected by the sensor 1 can be efficiently performed. It is also possible to do so.

Further, when a plurality of sensors 1 are arranged in a specific space, the number of persons existing in the specific space based on the human body detection status of each sensor 1, that is, the number of persons existing in the specific space depends on the frequency of human body detection. It is possible to determine whether the number of people to do is large or small. Therefore, according to the number of persons existing in the specific space, the air conditioner 3 is controlled by the air conditioning control system B.
The air conditioning level may be variably controlled.
With this configuration, comfortable air conditioning can be performed according to the number of people.

Here, a specific description of the human body detection system A in the case where the control device 6 is provided with the function of judging the number of persons is described below. As shown in FIG. 4, the sensor 1 includes a human body sensing unit 1a that senses a human body, and a terminal function unit that converts the sensing signal into a transmission signal and performs signal transmission by the above-described time division multiplex transmission with the control device 6. 1b and. The human body detection unit 1a also has a function of performing sensing signal processing. As shown in FIG. 5, the terminal function unit 1b includes a detection unit 31 that detects a sensing signal and a detection unit 3 that detects the detection signal.
A transmission unit 32 that performs signal transmission with the control device according to the output of 1; a power supply unit 33 that creates a constant voltage from the transmission signal superimposed on the transmission line L ₁ and supplies it to each unit as a power source;
The current limiting circuit section 34 limits the current supplied to the human body sensing section 1a.

As shown in FIG. 6, the control device 6 reads the monitoring data from each sensor 1 and determines the human body detection status of each sensor 1. Then, the number of times the human body detection output of each sensor 1 is obtained is counted. That is, the number of persons existing in the specific space is judged by this counting. Then, this counting result is sent to the control device 8 of the air conditioning control system C as output data. In this way, the air conditioning control system B can be adjusted according to the number of people in the specific space.
Thus, the air conditioning level of the air conditioner 3 can be variably controlled.

By the way, the human body detection sensor A and the illumination control system B are organically combined even at night. That is, as shown in FIG. 1, the lighting control system B incorporates various intimidating devices 13, a video camera 14, and the like in addition to the lighting fixture 2, for example, the human body detection sensor A.
When an intruder is detected at, the intruder is intimidated by using the intimidating device 13, the lighting device 2 is turned on, and the intruder is photographed by the video camera 14.

In this way, the human body detection system A as the crime prevention system can be used for control of other systems even during the daytime and can be effectively used. Moreover, by organically coupling the human body detection system A with other systems, it is possible to reduce the overall system cost. Furthermore, the monitoring result of the human body detection sensor 6 in the daytime is also used in the sign system E. The sign system E is used, for example, to display the usage status of a conference room or a reception room, and receives the human detection status of the human body detection sensor 6 in the conference room or the reception room as the usage status, and Display the usage status of the reception room.

By the way, in the case of the conventional crime prevention system, in order to identify and judge the human body detection condition of each sensor 1, the wiring between the control device 6 and each sensor 1 must be star wiring. Therefore, the workability was poor. However, in the case of this embodiment, the two-wire transmission line L
_{Since the} human body detection system is constructed by the time division transmission method using 1, the human body detection status of each sensor 1 can be identified and judged without using the star wiring, and the workability is improved.

The operation of the human body detection system A of this embodiment as a security system at night will be described below. As described above, since the false alarm rate is high in the conventional security system, it has been attempted to reduce the false alarm rate by increasing the function of each sensor 1, but there is a limit to improving the function of each sensor 1. However, there is a problem that the cost is increased.

In order to improve this point, in the case of this embodiment, the following method is used to reduce the false alarm rate as a crime prevention system. When this method is adopted, as described above, a plurality of sensors 1 are provided in a specific space, for example, in each room.
Need to be placed. Here, individual human body detection areas of the respective sensors 1 are shown by square areas in FIG. 7. Then, the room is further divided into a plurality of areas. That is, the area (shown by the diagonal line descending to the left in the drawing) facing the door 20 and the window 21 is the first warning area, and the area between them (shown by the diagonal line descending to the right in the drawing) is the second warning area. In addition, a region farther away from the door 20 and the window 21 (shown by a slanting line formed by a dash-dotted line in the figure in the figure) is a third warning region, and a region farthest from the door 20 and the window 21 (in the diagram The fourth warning area is defined by the diagonal line (dashed line consisting of the one-dot chain line descending to the right).

First, when the human body detection output is obtained on the route from the area A to the area C and the area B via the area B, it is determined that the human body detection output in this case is caused by the intruder. Further, when the human body detection output is continuously obtained a plurality of times by the same sensor 1 in each of the areas A to D, it is determined that the human body detection output is also caused by the intruder. Here, for example, if the human body detection output is obtained in the area C from the area A without passing through the area B, in this case, it is not immediately determined that the person is an intruder, and the operation of monitoring the human body detection state thereafter is performed. continue. By doing so, it is possible to comprehensively determine whether or not the person is an intruder based on the human body detection status by the plurality of sensors 1, and therefore the false alarm rate can be reduced even if the performance of each sensor 1 alone is not high.

In the case where area D in FIG. 7 is an area that requires special caution, it is determined that an intruder exists if human body detection output is obtained even once in this area D. By doing so, it is possible to prevent a false alarm in a particularly important warning area, which is preferable. By the way, as a method of transmitting the human body detection status in each of the above-mentioned warning areas A to D to the control device 6 of the human body detection system A, the following method is adopted. For example, if a return signal of a plurality of bits is sent during the return signal period of the above-mentioned transmission signal, the upper several bits of the above return signal are used as bits indicating the type of each sensor 1, and the lower several bits belong to itself. Areas I to II are indicated. For example, area a is "00",
Region b is "01", region c is "10", region d is "1"
1 ”, and when a human body is detected by each sensor 1, the monitoring data is returned to the control device 6 when accessed by the control device 6. When the human body is not detected, the monitoring data is not returned, or the monitoring data indicating that the human body is not detected is returned.
In the case described above, the control device 6 cyclically accesses each sensor 1 at night to perform continuous warning, but the sensor 1 that has obtained a human body detection output.
May send an interrupt request to the control device 6 and return the monitoring data.

By doing so, it is not necessary to store in the control device 6 what area each sensor 1 is installed in, and the configuration and processing of the control device 6 can be simplified. Moreover, there is an advantage that the warning area to which each sensor 1 belongs and the type of the sensor 1 can be arbitrarily changed. By the way, it is preferable to use, for example, a pyroelectric sensor using a pyroelectric element (PIR) as the sensor 1 because the human body can be satisfactorily detected in its own human body detection region. In addition to the pyroelectric sensor, a sensor using light or ultrasonic waves may be used.

Here, as the optical sensor, for example, in order to detect a human body in a specific area, a sensor including a light projector and a light receiver, which generates a human body detection output when light from the light projector is blocked, is used. For detecting the door 20, the window 21, or the area near the wall, a device that emits light to or receives light from the wall and detects the light reception level or its change to generate a human body detection output may be used.

In the case of the above-mentioned optical sensor, so-called linear human body detection is performed, but in the case of using an ultrasonic sensor, for example, three-dimensional human body detection is performed almost as in the case of a pyroelectric sensor. It is possible. Further, in order to further reduce the false alarm rate, a composite sensor in which the above various sensors are combined may be used. Further, a magnetic sensor is installed on the door 20 or the window 21 to warn the opening / closing state of the door 20 or the window 1.
May be incorporated into the security system.

By the way, the human body detection status of the human body detection system A at night is sent to the central controller 11 in real time. When the human body detection system A detects an intruder, the central control device 11 receives the output via the control device 6 and outputs the output to the outside via the output device 12. In this case, for example, the output device 12 makes an external transfer via a dedicated telephone line or a public telephone line, or makes an emergency call to a security guarantee company. In addition, it is preferable to be able to report to the security guarantee company in this way because the number of personnel required for security can be reduced.

In the above case, the case where the intruder is detected from the intruding state has been described. However, this can be used in reverse (in some cases, the monitoring area is widened) to determine the route that the last exiter leaves. Is also possible. In the above-mentioned case, for example, the comprehensive monitoring control system in which the entire building is centrally monitored and controlled has been described. However, for example, the comprehensive monitoring control used when performing comprehensive monitoring control for each tenant like a tenant building. In the case of system,
As shown in FIG. 8, a control device 19 may be provided for each area in which each tenant has moved in, and the control device 19 may collectively monitor and control the terminals.

Further, the lighting fixture 2 and the air conditioner 3 whose operation is controlled according to the output of the sensor 1 during the daytime may be incorporated in the human body detection system A as shown in FIG. In addition, in the human body detection system in this comprehensive monitoring and control system, a light emitter 13a, a speaker 13b, and a video camera 14 as the intimidating device 13 for intimidating at night are also integrally incorporated. Further, in this comprehensive supervisory control system, the transfer output system F is provided separately from the central control unit 11, and the transfer output can be sent to the central monitoring room.

By the way, the guards may manually switch the sensors 1 of the human body detection system A for crime prevention or control information transmission. There is a problem when forgetting to switch each sensor 1 of the human body detection system A for crime prevention. Therefore, it is possible to automatically switch whether the human body detection system A is used for crime prevention or for transmission of control information. In this case, in the present embodiment, as described above, it is possible to judge whether or not there is a person in the building, for example, based on the state of storing the key of the key management system D in the key box. That is,
For example, if all the people in the building exit, all keys should be returned in the key box. Therefore, in this case, the control device 9 of the key management system D transmits the information indicating that all the people in the building have exited to the control device 6 and the central control device 11 of the human body detection system A, and thereby at night time. Should switch the human body detection system A for crime prevention.

In this way, it is convenient that a person such as a security guard can confirm whether all the people in the building have exited and switch the human body detection system A for crime prevention, which is convenient. It should be noted that the entire human body detection system A in the building may be collectively switched for crime prevention,
The blocks are divided into specific areas, and when all the people in the blocks leave, the human body detection system A for the blocks
May be switched for crime prevention.

The switching of the human body detection system A from crime prevention to transmission of control information may be canceled when the key is taken out from the key box. In addition,
The above key box is generally installed in a security guard room, etc.The operation of taking out the key from the key box is performed through the security guard, and the route until the person who goes to work receives the key from the security guard is the security area. The human body detection system A does not operate because it has not entered.

As another method of automatically switching whether the human body detection system A is used for crime prevention or transmission of control information, the following method may be used. That is, the human body detection system A is automatically switched to crime prevention at a certain time by using the timer built in the central controller 11. In this case, there are cases in which the user does not leave even after the set time due to work reasons or when it is necessary to attend work early in the morning. Therefore, it is preferable that the security detection and the control information transmission of the human body detection system A can be controlled by a security guard even manually.

Furthermore, as another method, there is a method using the human body detection system A itself. In other words, for example, if all people leave the building (including blocks),
At that time, each sensor 1 of the human body detection system A cannot detect the human body. Therefore, in such a situation, the human body detection system A is automatically switched to crime prevention.

Furthermore, the above method is taken one step further, and the human body detection system A uses the function for detecting that the last-exited person exits, and the human-body detection system A when the last-exited person exits. May be switched for crime prevention. The human body detection system A may be switched between crime prevention and control information transmission by a combination of a timer and other methods. For example, in the case of the system shown in FIG. This is performed in combination with the management system D. Specifically, timer 1
When both the outputs of 8 and the key management system D are obtained, the human body detection system A is switched to crime prevention. By doing so, it is possible to flexibly cope with the case where the user does not leave even after the set time of the timer 18 has passed due to work reasons or when it is necessary to attend work in the early morning.

[0043]

As described above, according to the first aspect of the present invention, a plurality of sensors as a terminal device for detecting a human body and each having a unique address are set, and the plurality of sensors are connected by a two-wire transmission line. It consists of a human body detection system consisting of a master unit that individually determines the human body detection status of each sensor, load devices such as multiple lighting fixtures and multiple air conditioners, and a master unit that controls the operation of these load devices. At least a load control system and a key management system for managing the presence or absence of a key in the key box, the human body detection system, for crime prevention,
It is used as a crime prevention system at night because it transmits information indicating the human body detection status of each sensor to the load control system and uses it for transmission of control information to control the operation of load equipment of the load control system. The human body detection system is used for detecting the presence of a human body in a specific space, and according to the human body detection situation, operation control of load devices such as automatic lighting control can be performed. Can be used for control of the system, and the security system can be organically combined with the load control system to reduce the overall system cost. Further, since switching between the crime prevention and the transmission of control information of the human body detection system is performed by storing a predetermined key in the key box in the key management system, human body detection is performed. Switching between crime prevention of the system and transmission of control information can be automatically performed depending on whether there are people in the building,
Therefore, it is possible to reduce the burden on security guards and the like, and it is possible to reliably switch between the crime prevention of the human body detection system and the transmission of control information.

According to the second aspect of the present invention, a plurality of sensors as a terminal device for detecting a human body and having unique addresses are set, and a plurality of these sensors are connected by a two-wire type transmission line. A human body detection system including a master unit that individually determines the human body detection status, a load control system including a load device such as a plurality of lighting fixtures and a plurality of air conditioners, and a master unit that controls the operation of these load devices. At least the above human body detection system for crime prevention and transmission of control information for transmitting information indicating the human body detection status of each sensor to the load control system and controlling the operation of load devices of the load control system. Since the switches are used in a switching manner, the crime prevention system can be effectively used and the overall system cost can be reduced as in the case of the first aspect of the invention. Further, since the timer is used to switch between the crime prevention of the human body detection system and the transmission of the control information, the load on the security guard can be reduced, and the crime prevention and the control information can be reduced. It is possible to secure the certainty of switching for transmission.

Furthermore, as described in claim 3, even if the human body detection system switches to crime prevention when the human body is no longer detected, it can be automatically performed depending on whether or not there is a person in the building, for example. Therefore, it is possible to reduce the burden on security guards, etc., and to ensure the switching between crime prevention and control information transmission. Furthermore, as described in claim 4, when the human body detection system is used for transmission of control information, a function for detecting the exit of the last leaving person is provided, and for the crime prevention after the last leaving person leaves. Even if the switching is performed, it is possible to automatically switch between the crime prevention of the human body detection system and the transmission of control information by detecting whether or not there is a person.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a signal transmission method of the above system.

FIG. 3 is an explanatory diagram of a method of performing lighting control or air conditioning control by using the human body detection system for human body detection in the daytime.

FIG. 4 is a configuration diagram showing a specific configuration of a human body detection system.

FIG. 5 is a configuration diagram showing a specific configuration of a terminal function unit of the sensor.

FIG. 6 is a flowchart showing an operation when the control device of the human body detection system determines whether the number of people is large or small.

FIG. 7 is an explanatory diagram of an intruder warning method of the human body detection system.

FIG. 8 is a system configuration diagram when the present invention is applied to a small-scale system.

FIG. 9 is a system configuration diagram when a human body detection system has a different configuration.

[Explanation of symbols]

A human body detection system B lighting control system C air conditioning control system D key management system L _{1 to} L ₃ transmission line 1 sensor 2 lighting fixture 3 air conditioner 4 key box 6 to 8 control device

Claims (4)

[Claims] 1. A plurality of sensors as a terminal device for detecting a human body and each having a unique address, and a plurality of these sensors are connected by a two-wire transmission line to individually determine the human body detection status of each sensor. Human body detection system consisting of a master unit, load devices such as a plurality of lighting fixtures and a plurality of air conditioners, and a master unit that controls the operation of these load devices, and a key control unit in the key box. At least a key management system for managing the presence / absence of the human body detection system is provided for crime prevention and transmission of information indicating the human body detection status of each sensor to the load control system to control the operation of load devices of the load control system. In the key management system, switching is used for transmission of control information to be performed, and switching between crime prevention of the human body detection system and transmission of control information is performed in the key management system. And a predetermined key is stored in a key box. 2. A plurality of sensors as terminals which detect a human body and each have a unique address, and the plurality of sensors are connected by a two-wire transmission line to individually determine the human body detection status of each sensor. And a load control system including a load device such as a plurality of lighting fixtures and a plurality of air conditioners, and a master device that controls the operation of these load devices. The system is used in a switching manner for crime prevention and for transmitting control information for transmitting information indicating the human body detection status of each sensor to the load control system and controlling the operation of load devices of the load control system. A comprehensive supervisory control system, characterized in that a timer is used to switch whether the detection system is used for crime prevention or control information transmission. 3. The human body detection system is switched between crime prevention and control information transmission when the human body is no longer detected by the human body detection system. The integrated supervisory control system according to claim 2. 4. When the human body detection system is used for transmission of control information, a function for detecting exit of the last leaving person is provided, and the human body detection system is used for both crime prevention and control information transmission. 3. The integrated supervisory control system according to claim 2, wherein the switching as to whether or not to use it is performed for crime prevention after the last leaving person exits.