JP2740257B2 - Automatic load control system by human body detection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic load control system based on human body detection that controls a load according to the presence or absence of a person detected by a human body detection sensor.

[Prior art]

Conventionally, by turning on and off the load of lighting equipment etc. according to the entry and exit of people, it is possible to reduce power consumption when there is no person, or to automatically switch the load when both hands are closed and the switch can not be operated. It has been considered that the load is turned on / off by human body detection for the purpose of causing the load to be activated. In this type of device, the part that performs human body detection and the part that sends out contact output are generally housed in one case, but when it is desired to widen the detection area or to control the load to be controlled. When there are many, there is a problem that it is difficult to use. To solve such a problem, an automatic load control system in which a human body detection sensor and a controller for controlling a load are provided separately has been proposed.

[Problems to be solved by the invention]

By the way, a controller used in this type of automatic load control system is connected to a human body detection sensor and a load, but naturally the number of connected human body detection sensors and the power capacity of the load that can be controlled are limited. Therefore, there is an inconvenience when the user wants to use it beyond such a limit according to the shape and size of the arrangement place. The present invention is aimed at solving the above problems,
By providing a connector that can transmit a detection signal from a human body detection sensor among a plurality of controllers,
An object of the present invention is to provide an automatic load control system based on human body detection, in which a large number of controllers are linked to each other, and when a load is added, the controller can be added to cope with the load.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a human body detection sensor that detects the presence of a person and outputs a detection signal, and a human body detection sensor that has an independent signal line and is transmitted via a signal line. A plurality of controllers for controlling a load in response to the detection signal, and a connector for transmitting a detection signal to another signal line when receiving a detection signal from a human body detection sensor connected to each signal line; Are connected between the respective signal lines. Also, a human body detection sensor that detects the presence of a person and outputs a detection signal, and controls the load in response to a detection signal from the human body detection sensor that has independent signal lines and is transmitted via the signal lines. A plurality of controllers and a connector inserted between the human body detection sensor and each controller on a signal line and receiving the detection signal from the human body detection sensor and distributing the detection signal to each controller may be provided.

[Action]

According to the configuration of claim 1, since the detection signal transmitted through each signal line connected to the plurality of controllers can be transmitted to another signal line, the other controller can be controlled by the detection signal. You can. As a result, the number of human body detection sensors and loads can be increased in accordance with the number of controllers. According to the configuration of claim 2, since the detection signal on one signal line is distributed to a plurality of controllers, the number of human body detection sensors does not increase, but the number of loads increases in accordance with the number of controllers. You can do it.

Embodiment 1 FIG. 1 shows an automatic load control system according to the present invention in a conference room.
The example of the arrangement provided is shown. The load to be controlled is a lighting fixture
3 and the human body detection sensor 1 is arranged on the ceiling.
In addition, the controller 2 is arranged on a wall surface. Human body detection
The number of sensors 1 is appropriately arranged according to the size and shape of the detection area.
The controller 2 has a signal line l_sContact through
Continued. The detection area is set near the desk 4 in the conference room.
Is determined. Signal line l_sIs wiring between each human body detection sensor 1
And the human body detection sensors 1 are connected in parallel.
ing. Control line l between controller 2 and lighting fixture 3_c
And each lighting fixture 3 is connected in parallel. Ma
The controller 2 has a power line l_pAC power via commercial power
Connected. Also, it can be connected to one controller 2
The number of human body detection sensors 1 and lighting fixtures 3 (load) is limited.
Because there is a limit, it is necessary to provide many human body detection sensors 1.
And to be able to cope with the case where many lighting fixtures 3 are to be provided.
To connect multiple controllers 2 via the connector 5
I can do it. The human body detection sensor 1 is configured as shown in FIG. 2 and FIG.
A detecting element 11 composed of, for example, a pyroelectric element,
The amount of infrared light received changes due to the infrared radiation
Output signal is obtained when the Detector
The output of the element 11 is input to the detection signal
When it is determined that the human body has been detected by the
Power is gained. Between the human body detection sensor 1 and the controller 2
Signal line connecting between_sIs a two-wire, controller 2
The current limiting circuit is added to the constant voltage circuit,
The line voltage is usually maintained at a constant voltage.
ing. The human body detection sensor 1 has a signal line l_sDio against
The constant voltage circuit section 14 is connected via the
Is supplied to the detection signal processing unit 12 by the output of the constant voltage circuit unit 14.
Electricity is applied. Also, the signal line l_sAgainst diode
The voltage drop circuit unit 15 is connected via the bridge 13. This
The voltage drop circuit section 15 includes a Zener diode ZD₁And transi
Star Q₁Between the output end of diode bridge 13
And the detection output from the signal processing unit 12.
Transistor Q₁The transistor Q₁But
Conducted, signal line l_sLine voltage of the Zener diode ZD₁
To the voltage set in. In other words, the human body detection sensor
When the human body is detected by the satellite 1, the signal line l_sLine voltage
The detection signal is transmitted while being changed. As mentioned above
In addition, the human body detection sensor 1 is connected to the signal line l by the controller 2._sTo
Power is supplied via the_sLine
Voltage decreases, so that the detection signal
Output of the constant voltage circuit section 14 so that the operation of the
The force voltage is the signal line l when detecting the human body._sLower than the line voltage of
It has been set. In other words, even if the human body is detected, the constant voltage circuit
The output voltage of the unit 14 does not change. The sensing element
11 is a device that receives infrared rays like a pyroelectric element,
In addition, those that detect the human body by visible light or ultrasonic waves
May be used. As described above, the signal line l of the human body detection sensor 1_sConnect to
Since a diode bridge 13 is provided in the
Line l_sFrom the controller 2 to the human body detection sensor 1
Connection of the human body detection sensor 1 to the supplied DC power
Terminal T₁, T_TwoCan be connected without regard to polarity
Therefore, the construction work can be easily performed.
Further, as described above, the signal line l_sTo
Power to the human body detection sensor 1 through the
From 1, the signal line l_sControl by changing the line voltage of
Signal to detect the human body detection.
Line l_sIs a two-wire cable, which makes wiring easier.
is there. That is, wiring can be performed with two wires and no polarity
It is. The controller 2 basically operates as shown in FIG.
Be composed. In other words, a power supply that steps down and rectifies commercial power AC
The constant voltage circuit that makes the output of the circuit section 21 and the power supply circuit section 21 a constant voltage
Circuit section 22, and the DC output of the constant voltage circuit section 22
Power supply to each part of the
23 through signal line l_sTo the human body detection sensor 1
Power is supplied. This current limiting circuit 23 is
Signal line l_sLimit the amount of current flowing through
Line l_sThe change in the line voltage is the power supply inside the controller 2.
It does not affect the voltage. Place
And the signal line l_sThat the line voltage has changed
Signal is detected by the sensor signal determination circuit unit 24 of
Is output. The ON signal sets the load control mode.
The signal is output to the signal output mode selection circuit 25. Signal output method
In the expression selection circuit section 25, the human body by the human body detection sensor 1
It is assumed that the automatic mode corresponding to the detection of
If this is the case, the ON signal is output to the relay inversion selection circuit
It is input to the timer circuit 27. Relay inversion identification circuit
When receiving the ON signal, the unit 26
The load control unit 28 is turned on and connected to the load control unit 28.
Supply the commercial power AC to the load. Also, off delay tie
The master circuit unit 27 is reset when receiving the ON signal. one
The human body is no longer detected by the human body detection sensor 1
Stops the ON signal.
Off-delay timer circuit section by the output of the equation selection circuit section 25
27 is given a trigger to start the timed operation. Offde
Fixed time during which the timer circuit 27 is performing timed operation
When the time elapses, the off-delay timer circuit 27
Signal is output, and the relay inversion identification circuit 26
Turn off. Also turns on during the timed operation.
When a signal is input, the off-delay timer circuit 27
Since the timer is set, the timed operation stops and the load control unit 28
The ON state is maintained as it is. That is, the human body detection
Sensor 1 uses a differential sensor such as a pyroelectric element.
If you are, people will not move and change will stop
And output cannot be obtained, so the ON signal is temporarily stopped
May be. In such a case, the lighting equipment
It is inconvenient if the load is turned off immediately,
Keep the load on when it is only stopped, and
The load is turned off when it is no longer in the knowledge zone
The time limit is set in the off-delay timer circuit section 27.
Because The above ON signal and OFF signal are remote signals
Input to the output unit 16 and linked with the on / off of the load control unit 28
Voltage-free on / off output.
You. In the signal output mode selection circuit section 25, the automatic mode is set.
The setting is displayed on the signal output status display section 17.
It has become. Select the signal output method as described above
When the circuit section 25 is set to the automatic mode,
The load is turned on / off in response to the detection of the human body by the detection sensor 1.
Control. By the way, in the signal output method selection circuit section 25, a switch
Depending on the selection in section 18, in addition to the automatic mode, the forced on mode
Mode and forced off mode can be selected.
The forced ON mode is used to detect the human body when cleaning the room.
Selected when you want to turn on the load regardless of sensor 1
Therefore, if the forced ON mode is selected, the sensor
Regardless of the output of the signal judgment circuit 24, the relay inversion
In the road section 26, the load control section 28 is turned on. Also, forced on
Off-delay timer circuit when mode is selected
27 is reset and forced on mode is selected
Is displayed on the signal output state display section 17. this
The state is maintained until the switch unit 18 is operated next time. On the other hand, the forced off mode is
Lighting, regardless of the presence or absence of people
This is selected when you want to turn off the light.
When the mode is selected, the sensor signal determination circuit 24
Irrespective of the output of the
The control unit 28 is turned off. Also, forced off mode is selected
Is displayed on the signal output state display section 17. This state
The state is maintained until the switch section 18 is operated next time. From the remote signal output unit 16, the forced off mode or forced on
Even in the case of the mode, the
Output is obtained. That is, the remote signal output unit 16
Is set to the mode set by the signal output system selection circuit 25.
Instead, the output corresponding to the output of the human body detection sensor 1 is sent.
I will give it out. The controller 2 will be described more specifically.
As shown in FIG. 4, the power supply circuit section 21 includes a power supply terminal T_Five, T₆
A transformer T that steps down the commercial power supply AC connected to the
Auto bridge DB and smoothing capacitor C₁With
Output from the power supply circuit section 21 through the constant voltage circuit section 22
A constant voltage is supplied to each part. The output of the constant voltage circuit section 22
The force is applied to the sensor terminal T via the current control circuit 23._Three, T_FourContact
Continued. Therefore, the sensor terminal T_Three, T_FourConnected to
Signal line l_sIs supplied to the human body detection sensor 1 through the
You. Sensor terminal T_Three, T_FourIs the input terminal of the sensor signal determination unit 24
Capacitor C for noise absorption_TwoThrough
Is connected to one end of the comparator COM. Compare
The other end of the COM_TwoAnd resistance R_TwoWhen
The reference voltage obtained by connecting the series circuit of
Sensor terminal T_Three, T_FourIs higher than the reference voltage.
When falling, the output level of the comparator COM becomes “H”
It is set as follows. That is, the human body detection sensor 1
More human body is detected and signal line l_sLine voltage of
Then, the output level of the comparator COM becomes “H”. Con
The output of the parser COM is the output of the sensor signal determination unit 24.
And the two-input NOR circuit NOR of the signal output system selection circuit 25₁of
It is input to one input terminal. The signal output method selection circuit 25 includes a pair of RS flip-flops.
FF₁, FF_Two, Each RS flip-flop FF₁, FF_TwoOutput
A pair of inverters IN that reverse each other₁, IN_Two, One inn
Barta IN₁And the output of the comparator COM are input
Noah Circuit NOR₁And so on. Also switch
Section 18 has three switches SW₁~ SW_ThreeAre provided and each switch is
H SW₁~ SW_ThreeWith the above-mentioned forced on mode and forced off
Mode and automatic mode can be selected respectively
I have. Switch SW₁Is for selecting the forced ON mode,
Resistance R_ThreeConnected in series with this series circuit.
Switch SW₁And resistance R_ThreeIs connected to the resistor R_FourAnd con
Densa C_FourThrough an integration circuit for preventing chatter
RS flip-flop FF₁Connected to the reset terminal of
You. Therefore, the switch SW₁Is turned on, RS free
Flip flop FF₁Output level becomes “L”. Also, RS
Flip-flop FF_TwoSimilarly for the reset terminal of
Switch SW that is a switch for selecting the control off mode_TwoAnd
Anti-R_FiveIs connected to the resistor R₆And capacitor C₆Product of
Switch SW_TwoTurn on
And RS flip-flop FF_TwoOutput level is “L”
You. Switch SW₁And resistance R_ThreeIs connected to diode D_Five
Through the RS flip-flop FF_TwoConnected to the set terminal
And conversely, switch SW_TwoAnd resistance R_FiveThe connection point with
De D_ThreeThrough the RS flip-flop FF₁To the set terminal of
Continued. Therefore, each switch SW₁(SW_Two) On
Then, one RS flip-flop FF₁(FF_Two) Output level
Each bell goes “L” and the other RS flip-flop
FF_Two(FF₁) So that each output level becomes “H”.
Has been continued. Switch for automatic mode selection
Switch_ThreeIs the diode D₇Connected in series with this series
A circuit is connected across the power supply. Also, switch SW
_ThreeHas a resistor R₇And capacitor C₇Is a series circuit with
Circuits are connected in parallel. Switch SW_ThreeAnd diode D
₇Is connected to the cathode of diode D_FourRS via
Lip flop FF₁Connected to the set terminal of
And diode D₆Through the RS flip-flop FF_TwoNo
Connected to the socket terminal. Therefore, the switch SW_ThreeThe
FF, both RS flip-flops FF₁, FF_TwoOutput level
Both become “H”. In addition, when the power is turned off,
Diode D₇Through the capacitor C₇Is discharged,
The next time the power is turned on, the switch SW_ThreeIs off
Even if both RS flip-flops FF₁, FF_TwoSet terminal
To both RS flip-flops FF₁, FF_TwoOut of
The power level is set to “H”. This is a blackout
When returning after which mode,
Even if you force it to be set to automatic mode
It is. Each switch SW₁, SW_TwoAs a push button switch
Is turned on only during operation. According to the above configuration, the switch SW₁Turn on and force
If ON mode is selected, the inverter IN₁Output level
Becomes “H” and the switch SW_TwoTurn on to force off mode
The inverter IN_TwoOutput level to “H”
Switch SW_ThreeSwitch on and select the automatic mode.
If both inverters IN₁, IN_TwoOutput level becomes “L”.
Therefore, in the output state display section 17, each inverter IN₁,
IN_TwoOutput of each inverter IN_Three, IN_FourTo reverse and emit light
Diode LD₁, LD_TwoConnected to the cathode
And each light emitting diode LD₁, LD_Two, Respectively
Mode and forced off mode.
You. Also, the inverter IN₁, IN_TwoOf the outputs of
As in the NOR circuit NOR_TwoAnd the inverter IN_FiveUse and
With the inverter IN_FiveThe output end of the light emitting diode LD_Three
By connecting to the cathode of the
Light emitting diode LD_ThreeLights up. As above
In the output state display section 17, the selection by the switch section 18 is not performed.
Suitable light emitting diode LD₁~ LD_ThreeLights up and the selected
It displays the mode that was changed. As described above, the human body is detected by the human body detection sensor 1.
The output level of the sensor signal determination unit 24 goes to “H”.
Become. In the automatic mode, the inverter IN₁Output level is
Since it is “L”, the NOR circuit NOR₁Output level is the sensor signal
The output level of the signal determination unit 24 is inverted. Ma
In the forced ON mode, the inverter IN₁Output level
Is “H”, the NOR circuit NOR₁Output level of the sensor
It is always "L" regardless of the output of the signal determination unit 24. No
A circuit NOR₁Output of the inverter IN₆Via remote signal
It is input to the output unit 16 and
The signal is input to the off-delay timer circuit 27. Anti relay
In the circuit identification circuit unit 26, the NOR circuit NOR₁Output is 3-input NOR
Circuit NOR_ThreeIs input to the NOR circuit NOR._ThreeOther
Input is inverter IN_TwoOutput and load control unit 28 assistance
Contact r₁₂Input whose logic value is determined by the open / closed state of
ing. Auxiliary contact r of load controller 28₁₂Is the main contact r₁₁When
The opening and closing state is reversed, and a pair of resistors R₉, R_TenSeries
Between the connection point of the voltage divider and the circuit connected between both ends of the power supply
And the resistance R₈And capacitor C₈Chattering prevention consisting of
Are connected via an integrating circuit for use. NOR circuit NOR_Threeof
The connection point of the voltage dividing circuit is connected to the input terminal. This
Here, resistance R₈~ R_TenThe relation of R is₈<R₉<R_TenSet to
Have been. Therefore, the auxiliary contact r₁₂Is closed
The output of the voltage divider circuit becomes “L” and the auxiliary contact r₁₂Is open
It becomes “H” if it is. Automatic mode is selected
Or no human body is detected, or
Before the mode is selected, the main contact r of the load control unit 28 is₁₁Is
Open and auxiliary contact r₁₂Is closed,
The output becomes “L”. Also, the inverter IN_TwoOutput level
Is also “L”, so when a human body is detected
NOR circuit NOR₁Output level changes from “H” to “L”
When it comes, NOR circuit NOR_ThreeThe output level of the
Transistor Q_TwoIs turned on, and the
Power is supplied to the set coil SC of the switching relay. Like this
And the main contact r₁₁Turns on. Main contact r₁₁Is one power supply end
Child T₆And one load terminal T₇And inserted between the other power
Terminal T_FiveAnd the other load terminal T₈Is connected to
Load terminal T₇, T₈Control line l_cIf the load is connected via
Thus, the load can be energized. Main contact r₁₁
Is turned on, the auxiliary contact r₁₂Turns off, the resistance R
₉, R_TenBecomes "H" and the NOR circuit NOR_ThreeOutput level
Is set to “L” again, and the power to the set coil SC stops.
I do. Here, using a latching relay for the load control unit 28
Keeps the contact state even when the power is turned off
Is done. Thus, the main contact r₁₁And auxiliary contact r₁₂Anti
The set coil SC is energized for the time necessary for
Power consumption is reduced because power is turned off,
Transformer T, which occupies the largest weight in the parts, is downsized.
You can do it. The connection point of the voltage divider is a resistor R₈And Inva
Data IN₇And through the light emitting diode LD_FourConnected to the cathode of
Is done. This light emitting diode LD_FourIs the operation indicator
And the auxiliary contact r₁₂Turns off when the main contact r
₁₁Flashes in response to the on / off state of. NOR circuit NOR₁Output is off delay as described above.
It is also input to the timer circuit section 27, and the NOR circuit NOR₁of
When the output level goes to “L”, the off-delay timer circuit
27 is reset. The off-delay timer circuit section 27
NOR circuit NOR with integrated circuit IC for timer₁Output level
Becomes "H", timer integrated circuit IC starts timed operation
After a certain period of time, the output level is set to “L”. This
Here, the time for the timed operation of the timer integrated circuit IC is
VR can be adjusted. That is, the automatic mode
The output level of the sensor signal determination unit 24 is “H”
When it becomes “L”, the NOR circuit NOR₁Output level is “H”.
After a certain period of time, the output level of the IC
Becomes “L” and the inverter IN₈Output level becomes “H”.
You. The output section of the off-delay timer circuit section 27 has a pair of
Inverter IN_Two, IN₈-Input NOR circuit N that receives the output of
OR_FourIs provided, and one of the inverters IN_Two, I
N₈When the output level of the
You. In other words, in the automatic mode, the inverter IN_Twoof
Since the output level is “L”, the inverter IN₈Output level
NOR circuit NOR corresponding to the bell_FourThe output level of
In the control off mode, the inverter IN_TwoOutput level of
Since it is “H”, the inverter IN₈Related to the output level of
Kunor circuit NOR_FourOutput level is always “L”. NOR circuit NOR_FourIs output from the relay inversion identification circuit 26-2.
Input NOR circuit NOR_FiveConnected to one input terminal of the NOR circuit
NOR_FiveInverter IN₉Through the above
Is connected. That is, the main of the load control unit 28
Contact r₁₁Is on, the auxiliary contact r₁₂Is off
Inverter IN₉Since the output level of the
A circuit NOR_FiveThe output level of the NOR circuit NOR_FourOutput level
Will change in accordance with As mentioned above,
Time delay operation of the off-delay timer circuit 27
When finished or when Forced Off mode is selected
The NOR circuit NOR_FourSince the output level of the
A circuit NOR_FiveBoth input levels become “L”,
Road NOR_FiveOutput level becomes “H” and transistor Q_ThreeBut
And turns on the reset coil RC of the latching relay.
It is done. Thus, the main contact r₁₁Turns off,
Auxiliary contact r₁₂Turns on, the inverter IN₉Output level
The bell goes “H” and the transistor Q_ThreeTurned off and reset
Power supply to the cut coil RC stops. In other words, set carp
As well as the power to the reset coil RC.
It ends in time. By the way, NOR circuit NOR₁Output of the inverter IN₆To
The signal is also input to the remote signal output unit 16 via the remote controller. Remote signal
In the output unit 16, the RS flip-flop FF_ThreeReset terminal
Inverter IN₆No. times because the output of
Road NOR₁When the output level of the
FF_ThreeOutput level becomes “L” and transistor Q_FourBut
And the power supply to the relay coil Ry stops. Lily
-When the power supply to coil Ry stops, normally closed contact r closes.
You. On the other hand, RS flip-flop FF_ThreeSet terminal
Inverter IN₈Output is connected,
When the timed operation in the timer circuit section 27 ends,
TA IN₈Output level becomes “H” and RS flip-flop F
F_ThreeOutput level to “H” and set transistor Q_FourTurn on
To energize the relay coil Ry. In this way, the relay
The closed contact r is turned off. In other words, automatic mode
Main contact r₁₁Normally closed contacts to correspond to the open / closed state of
r opens and closes, and the remote end connected to both ends of the normally closed contact r
Remote control terminal T₉, T_TenMore no-voltage contact output
Become. By using this non-voltage contact output, a human body detection sensor
On / off status of load by 1 was displayed elsewhere
Thus, other loads can be linked. Ma
Since the no-voltage contact output is obtained by the normally closed contact r,
It turns on in the event of a power outage or breakdown, indicating that people are present.
The fail-safe function.
Will have. Note that the relay coil Ry and
Closed contact r is a semi-conductor such as transistor or triac.
It may be replaced with a body switch. By the way, as shown in FIG.
l_sTo be able to connect regardless of polarity
This diode bridge is equipped with a diode bridge 51.
51 via signal line l_sOf the line voltage of the sensor signal judgment
It is detected in the circuit section 52. By human body detection sensor 1
Human body detected and signal line l_sWhen the line voltage of
The voltage drop circuit 54 is operated through the circuit 53, and another
Signal line l connected to the controller 2_sLine voltage of
Let it down. The voltage drop circuit section 54 has a diode bridge 55
Via signal line l_sConnected to the signal line l_sAgainst
Polarity can be ignored. In addition, the human body detection sensor 1
Similarly, the constant voltage circuit section 56 is provided, and the signal line l_sMore electricity
Sources are available. That is, a pair of
Signal lines l connected to the_sContact between
Connecting one of the controllers 2
Signal line l_sWhen the line voltage changes, the other control
Signal line l_sCan also be changed
So that both controllers 2 are linked
It is. Here, the connector 5 simply detects the change in the line voltage.
Because it can only be transmitted in two directions.
In the case of bidirectional transmission between two devices, two connectors 5 are used.
Only two-way transmission between three or more controllers 2
In such a case, the connection as shown in FIG.
In the connector 5 having the above configuration, the output-side signal line l_sConnect to
Connector 5 is connected to controller 2
It is treated the same as the intellectual sensor 1. The connector 5 will be described more specifically.
It is configured as follows. Signal line l_sInput terminal T connected to
₁₁, T₁₂Is connected to the input terminal of the diode bridge 51.
You. The sensor signal determination circuit 52 includes a comparator COM₁Be prepared
, Comparator COM₁Is connected to the resistor R_TenTotsu
Ener diode ZD_ThreeFrom the connection point of the series circuit with
Pressure and the comparator COM₁The other input terminal of
Twin resistance R₁₁, R₁₂Through a voltage divider consisting of a series circuit of
The output voltage of the diode bridge 51 is input. But
The signal line l_sIf the line voltage of
Comparator COM₁Is inverted to “L”.
The inverting circuit unit 53 is composed of an astable multivibrator,
Comparator COM as described above₁Output level is “L”
Starts the oscillating operation and alternates the output level at a fixed cycle.
Switch between “H” and “L”. Output level of inverting circuit 53
Is “H”, the transistor Q of the voltage drop circuit 54_FiveBut
When it is “L”, the transistor of the voltage drop circuit 54
Q_FiveTurns off, so transistor Q_FiveAnd Zener die
Aether ZD_FourThe output terminal is connected to the series circuit with
The impedance between the input terminals of the
And That is, the input terminal of the diode bridge 55
Output terminal T₁₃, T₁₄Signal line connected via_sLine-to-line
The Zener diode ZD_FourVoltage and output
Force terminal T₁₃, T₁₄Set by controller 2 connected to
Alternately between the input and output voltages. Meanwhile, the input terminal
T₁₁, T₁₂Signal line l connected to_sThe line voltage of
Voltage and the input level to the inverting circuit 53 becomes “L”.
Oscillation stops and transistor Q_FiveIs off
You. The transistor Q is connected to the output terminal of the diode bridge 55._Five
Signal line l when is turned on_sOutput voltage than the line voltage
A constant voltage circuit section 56 set at a low pressure is provided, and a signal line is provided.
l_sConnector 5 by the power supply obtained from controller 2 through
Power supply to each part. By using the connector 5 configured as described above,
Signal line l on the input side of connector 5_sWhen the line voltage of
Power side signal line l_sLine voltage alternates between high and low
Output terminal T₁₃, T₁₄Control connected to
In la 2, in the automatic mode, generation and stop of the ON signal
Are alternately repeated. Here, the ON signal
Even if it stops, the time limit of the off-delay timer circuit 27
Signal does not occur until the signal_sLine
The switching cycle of the inter-voltage is timed by the off-delay timer circuit 27.
Set the oscillation frequency of the inverting circuit 53 to be shorter than the time.
If it is set to 0.2 to 1 Hz, even if the line voltage changes,
The lighting fixture 3 connected to the controller 2 is kept on.
You can do it. Also, the signal on the input side of the connector 5 is
Line l_sWhen the line voltage returns to the original level, the output side signal line l_sLine
The inter-voltage is also set by the controller 2 on the output side of the connector 5.
Connected to the controller 2
The lighting fixture 3 thus turned off. As a result, multiple
Signal lines connected to the controller 2_sThe connector
5 in the automatic mode.
The lighting equipment 3 connected to the
You can do it. In other words, connect to each controller 2
One of the detected human body detection sensors 1 detects a human body
Then you can turn on all the lighting fixtures 3
Therefore, the human body detection sensor 1 is added or the lighting equipment 3 is
It can be expanded. Also, the signal line l_s
Controller 2 is linked via
In the forced ON mode and the forced OFF mode,
Since each controller 2 can be controlled individually
is there. Therefore, the illuminator connected to each controller 2
If the tool 3 is divided for each area in the room,
Is a collective control, and in other modes, it is a control for each area.
Because

Second Embodiment In the first embodiment, the connector 5 having one-to-one input and output is shown. However, in the present embodiment, as shown in FIG.
Multiple outputs are obtained for one input. That is, the connector 5 of the present embodiment is inserted between the human body detection sensor 1 and the controller 2, and distributes the output of the human body detection sensor 1 to the plurality of controllers 2. However, the change in the line voltage of the human body detection sensor 1 is connected to the signal line l _s detected by the sensor signal determining circuit portion 61, there is to operate the voltage drop circuit 62, the voltage drop circuit 62, Diode bridge
It is connected to each controller 2 via 63. Here, in the first embodiment, the power is supplied from the controller 2 to the human body detection sensor 1. However, since the connector 5 of the present embodiment is inserted between the controller 2 and the human body detection sensor 1, 2 cannot supply power. Therefore, the human body detection sensor 1
To supply power to the connector 5
In addition, a power supply circuit section 64 that steps down and rectifies the commercial power AC, a constant voltage circuit section 65 that converts the output of the power supply circuit section 64 to a constant voltage, an energization display section 66 that indicates energization, and limits the current supplied to the human body detection sensor 1 The current limiting circuit 67 is provided. More specifically, as shown in FIG. 7, power supply circuit section 64 includes power supply terminals T ₁₅ and T ₁₆ for connecting a commercial power supply AC.
And step-down rectifies the commercial power supply AC via the transformer Ta and the diode bridge DBa. Further, the light emitting diode LD ₅ is provided as current display unit 66. The output of the power supply circuit section 64 is supplied to each section as a DC power supply through the constant voltage circuit section 65. Output of the constant voltage circuit section 65 is sent to the signal line l _s which is connected to the sensor terminals T _17, T ₁₈ via a current limiting circuit unit 67, for supplying power to the human body detection sensor 1. Sensor terminal T
₁₇ , the line voltage of the signal line l _s connected to T ₁₈ is input to the comparator COM ₂ of the sensor signal determination circuit 61, and the resistance R ₁₃
It is compared with a reference voltage obtained at the connection point of the series circuit of the Zener diode ZD ₅ and. Signal line more than this reference voltage
When line voltage l _s decreases, the output of the comparator COM ₂ becomes "H". The voltage drop circuit section 62 includes transistors Q _{6 to} Q ₈
And a zener diode ZD ₆ ~ZD ₈ is configured by serially connecting each down the line voltage of the signal line l _s, the comparator COM ₂ of the output level when changes to "H" transistor Q ₆ to Q ₈ Is turned on. Series circuit of the transistor Q ₆ to Q ₈ and a Zener diode ZD ₆ ~ZD ₈ is connected to the input terminal of each diode bridge 63 a to 63 c, the input terminals of the diode bridge 63 a to 63 c are respectively connected to terminals T through ₁₉ through T ₂₄ are being connected to the controller 2. According to the above configuration, the detection of the human body by the human body detection sensor 1 can be transmitted to each controller 2, and in the automatic mode, a large number of lighting fixtures 3 connected to each controller 2 are controlled collectively. You can do it. In the forced on mode and the forced off mode, the lighting fixtures 3 connected to each controller 2 can be individually controlled.

【The invention's effect】

As described above, the present invention provides a human body detection sensor that detects the presence of a person and outputs a detection signal, and has an independent signal line and responds to the detection signal from the human body detection sensor transmitted via the signal line. A plurality of controllers for controlling the load and a connector for transmitting a detection signal to another signal line when receiving a detection signal from a human body detection sensor connected to each signal line, and This is a connection between signal lines, and the detection signal transmitted on each signal line connected to multiple controllers can be transmitted to other signal lines, so this detection signal also controls other controllers You can do it. As a result, there is an advantage that the number of human body detection sensors and loads can be increased in accordance with the number of controllers. Also, a human body detection sensor that detects the presence of a person and outputs a detection signal, and controls the load in response to a detection signal from the human body detection sensor that has independent signal lines and is transmitted via the signal lines. By providing a plurality of controllers and a connector inserted between the human body detection sensor and each controller on a signal line and distributing the detection signal to each controller when a detection signal is received from the human body detection sensor, one signal line Is distributed to a plurality of controllers, the number of human body detection sensors does not increase, but there is an advantage that the load can be increased in accordance with the number of controllers.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram showing a connection example according to the first embodiment of the present invention, FIG. 2 is a block diagram of the same, FIG. 3 is a circuit diagram of a human body detection sensor used in the same, and FIG. 5, FIG. 5 is a circuit diagram of the connector used in the above embodiment, FIG. 6 is a block diagram of the connector used in the second embodiment of the present invention, and FIG. 7 is a circuit diagram of the connector used in the embodiment. 1 ... human body detection sensor, 2 ... controller, 3 ... lighting equipment, 5 ... connector.

Claims (2)

(57) [Claims] 1. A human body detection sensor for detecting the presence of a person and outputting a detection signal, and a load in response to a detection signal from the human body detection sensor having independent signal lines and transmitted via the signal lines. A plurality of controllers, and a connector that sends a detection signal to another signal line when receiving a detection signal from a human body detection sensor connected to each signal line,
An automatic load control system based on human body detection, wherein signal lines are connected via a connector. 2. A human body detection sensor for detecting the presence of a person and outputting a detection signal, and a load in response to a detection signal from the human body detection sensor having independent signal lines and transmitted via the signal lines. And a connector that is inserted between the human body detection sensor and each controller on a signal line and distributes the detection signal to each controller when a detection signal is received from the human body detection sensor. Automatic load control system based on human body detection.