JP3217520B2 - Terminal for heat ray sensor of remote monitoring and control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal for a heat ray sensor of a remote monitoring control system.

[0002]

2. Description of the Related Art FIG. 5 shows a remote monitoring and control system for lighting control using a terminal 2 for a heat ray sensor. In this system, a central control unit 1 controls a transmission line 4 consisting of a pair of lines. Terminal 3, monitoring terminal 2a,
The terminal 2 for the heat ray sensor is connected, and the lighting terminal 5 is connected to the terminal 3 for control.

The operation of the time division multiplex transmission of this system will be described with reference to a transmission signal shown in FIG. 6. A transmission signal Vs having a format as shown in FIG. , The control terminal 3, the heat sensor terminal 2, and the monitoring terminal 2a.
That is, the transmission signal Vs includes a start pulse ST indicating the start of signal transmission, and mode data M indicating a signal mode.
D, address data AD, control data C for controlling the load
D, a multi-pole (± 24 V) time-division multiplexed signal including a checksum data CS for detecting a transmission error, and a return wait signal for setting a signal return period WT for setting a return period for return data. Data is to be transmitted.

In the control terminal 3, the heat sensor terminal 2, and the monitoring terminal 2a, the address data AD of the transmission signal Vs received via the transmission line 4 is stored in the self-address which is set in advance. When they coincide with each other, the control data CD of the transmission signal Vs is taken in, and the monitoring data is synchronized with the signal return period WT of the transmission signal Vs by the current mode signal (via a suitable low impedance between the transmission lines 4). (A signal that is short-circuited and sent).

On the other hand, the central control unit 1 is provided with dummy signal transmitting means and interrupt processing means. The dummy signal transmitting means always transmits a transmission signal Vs in which the mode data MD is set to the dummy mode. Further, when the interrupt signal Vi as shown in FIG. 6B is returned, the interrupt processing means causes the thermal sensor terminal 2 or the monitoring terminal 2a which has generated the interrupt signal Vi to return monitoring data. It has become. That is, the terminal 2 for the heat sensor
The monitoring terminal 2a sends an interrupt signal Vi in response to the operation of the operation switch S according to the change of the heat ray sensor. In response to the interrupt signal Vi, the central control unit 1 transmits a transmission signal Vs for address search for each group address in order to search for the interrupted thermal sensor terminal 2 or monitoring terminal 2a. I do. The interrupted heat sensor terminal 2 or monitoring terminal 2a returns its own unique address by a return signal when the group to which it belongs is accessed. By this return, the central controller 1 can determine the interrupted heat sensor terminal 2 or the monitoring terminal 2a, and then have the address data AD of the heat sensor terminal 2 or the monitoring terminal 2a. The transmission signal Vs is transmitted to access the heat sensor terminal 2 or the monitoring terminal 2a, and the operation switch S connected to the heat ray sensor connected to the heat sensor terminal 2 or the monitoring terminal 2a. Is returned as monitoring data.

[0006] Based on the monitoring data returned from the heat sensor terminal 2 or the monitoring terminal 2a in this manner,
The central controller 1 creates control data CD to the control terminal 3 that controls the lighting load 5 corresponding to the heat sensor terminal 2 or the monitoring terminal 2a, and transmits the control data CD including the control data CD. The lighting load 5 is turned on and off by time-division multiplex transmission of the signal Vs to the control terminal 3 via the transmission line 4.

In the central control unit 1, a terminal 2 for a heat sensor
Alternatively, the correspondence with the control terminal 3 to which the load 5 to be controlled is connected in response to the monitoring data from the monitoring terminal 2a is set, and the lighting load 5 of the control terminal 3 is set according to this correspondence. On and off.

[0008]

By the way, in the above-mentioned conventional example, since the heat ray sensor terminal 2 does not have a built-in relay for turning on / off a load such as a lighting load by itself,
As described above, the monitoring data is returned from the hot-wire sensor terminal 2 to the central control unit 1, and the central control unit 1 creates control data CD for controlling the load based on the monitoring data and generates the corresponding control data CD. The control terminal 3 transmits the signal to the terminal 3 and drives a relay provided based on the control data CD to perform a series of operations of turning on / off the load.

Therefore, a control terminal 3 corresponding to the hot-wire sensor terminal 2 is necessarily required. In a system in which the control terminal 3 is mounted on a distribution board or the like, the hot-wire sensor terminal 2 is not used.
However, there is a problem that a space in the distribution board is required for the control terminal 3 corresponding to the above. The present invention has been made in view of such a problem, and an object of the invention of claim 1 is to provide a load control device having a built-in detection output of a heat ray sensor without providing a corresponding control terminal. it is possible to control the load by driving the relay, yet can also drive the load control relay in the control data from the central control unit, further connection arrangement from the ceiling to the load
Is to provide the line, the signal line connection and the intensive performed that remote monitoring heat ray sensor terminal unit of the control system.

A second object of the present invention is to provide a terminal for a heat ray sensor of a remote monitoring and control system which can be embedded and arranged on a ceiling in addition to the object of the first invention.

[0011]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, a central control unit and a plurality of monitoring and control terminals each having a unique address are set as a pair. Connected by a signal line, the central control unit appropriately accesses each terminal device to transmit control data for controlling the load and a transmission signal for transmitting a return standby signal for setting a return signal standby period. The control data and the monitoring data are transmitted in a time-division multiplex manner by transmitting the monitoring data with a return signal consisting of a current mode signal obtained by short-circuiting the signal lines from the terminal device through an appropriate impedance during the period. A hot-wire sensor that detects the indoor side is installed in a vessel embedded in a building and installed in a building, and a load control relay and this load control relay A function to drive in conjunction with the detection output of the hot-wire sensor, send the detection output of the hot-wire sensor as monitoring data to the central control unit by a return signal, and a function to drive the load control relay with the control data from the central control unit. and a terminal circuit portion built in the device body having,
Load connected to both ends of the relay contact of the load control relay
Control terminals and signal line connection terminals are arranged in parallel on the top
It was established .

According to a second aspect of the present invention, in the first aspect of the present invention, a container body having a flange portion in contact with a lower surface of the ceiling material around the lower portion, and a heat ray sensor mounted on the lower surface portion is opened in the ceiling material. The ceiling body is fixed to the ceiling by being housed and arranged in the hole, and sandwiching the ceiling material by a clip fitting mounted on the upper part of the body protruding from the upper surface side of the ceiling material.

[0013]

According to the first aspect of the present invention, the load control relay incorporated in the housing can be driven in conjunction with the detection output of the heat ray sensor. Without providing the load, the load can be turned on / off according to the detection output of the heat ray sensor.

Further, since the load control relay can be driven by control data from the central control device based on operation data of another monitoring terminal or the like, the loads to be turned on / off by the load control relay are grouped. It may be one of the loads to be controlled or controlled. Change
Connected to both ends of the relay contact of the load control relay
Load control terminals and signal line connection terminals are parallel to the upper surface of the body
The wiring connection to the load and the connection of the signal lines are
You can do it intensively in the back. According to the second aspect of the present invention, it is possible to embed and arrange in the hole of the ceiling material, and it is easy to set the detection direction of the heat ray sensor toward the bottom of the ceiling within a wide range.

[0015]

The present invention will be described below with reference to examples. Figure 2
FIG. 4 shows the structure of the terminal device 2 for a heat ray sensor according to one embodiment, in which a pyroelectric element 13 and a signal processing circuit are mounted on a lower opening 37 of a body 33 having a substantially disk-shaped flange 31. Hemispherical body 35 with built-in printed circuit board 32
And a hemispherical lens 34
Are rotatable in the horizontal and vertical directions.
It is supported by. The holding metal fitting 38 is a metal fitting for holding and holding the heat ray sensor 18 in the lower opening 37.
It is fixed to the body 33 with a tapping screw 48.

A cover 39 is fixedly attached to the upper end opening of the body 33 with a tapping screw 42, and a printed circuit board 40 on which a circuit of a remote monitoring control system such as the terminal circuit unit 12 is mounted. And a timer IC
The printed circuit board 41 on which the control circuit such as 21 is mounted is mounted on the body 3
The cover 39 is provided at a position where the cover 39 is attached to the opening at the upper end of the cover 3. On the upper surface of the cover 39, the signal line connection terminals 10
a and 10b, and a load connection terminal 1 connected to both ends of a relay contact r of a load control relay 6 composed of a two-winding type latching relay incorporated in the body 33.
1a and 11b are provided, and furthermore, the operation section of the DIP switch of the address setting section 7 and the operation section of the DIP switch of the load number setting section 8 are exposed. The terminal cover 9 is detachably attached to the surface of the cover 39.

The flange 31 of the body 33 has a pair of square holes 4.
3 are formed, and mounting screws 44 are inserted through the respective square holes 43. In the middle part of the mounting screw 44, a clamp 4
5 is inserted, and a clamp 45 is attached to the tip of the mounting screw 44.
Is fitted with a tightening washer 46 which is prevented from rotating. One end of the clamp 45 is pivotally attached to the upper portion of the cover 39, and the other end can change the distance from the flange 31 of the body 33. Also, the clamp 45
Is connected to a return spring 47, and the other end is connected to the flange 3
It is urged away from 1.

Therefore, when attaching the terminal device 2 for a heat ray sensor of the present invention to a mounting hole drilled in the ceiling, the mounting screw 4
4 is loosened so that the other end of the clamp 45 is separated from the flange 31 of the body 33 by the spring force of the return spring 47 (that is, the distance between the other ends of the clamp 45 is reduced). In this state, the body 33 is inserted into the mounting hole, and the flange 31 is brought into contact with the surface of the mounting panel. Next, when the mounting screw 44 is tightened, the other end of the clamp 45 approaches the flange 31 of the body 33, and the ceiling panel can be clamped between the flange 31 and the clamp 45. is there. After fixing the terminal device 2 for a heat ray sensor of the present invention to the ceiling as described above, the decorative plate 30 is attached so as to cover the lower surface of the flange 31.

As described above, the detection surface of the pyroelectric element 13 of the heat ray sensor 18 of the heat ray sensor terminal 2 attached to the ceiling is directed downward through the lens 34, and if a person exists in the detection area. When the pyroelectric element 13 detects this heat ray, the hot-wire sensor 18 is turned on by processing this detection signal. FIG. 1 shows a circuit configuration of a terminal circuit unit 12 of the present embodiment. A diode bridge DB ₁ is connected between signal line connection terminals 10 a and 10 b connecting a transmission line 4 to rectify a transmission signal Vs. Transistor Q that stabilizes this rectified output to obtain a constant DC voltage
₁ , a constant voltage circuit 14 including a zener diode ZD ₁ , a smoothing capacitor C _{1, and the} like, and a signal processing circuit 2 including a CPU that operates using the DC from the constant voltage circuit 14 as a power supply.
3 and the transmission signal V from the signal line connection terminals 10a and 10b.
receives s, a receiving circuit 15 comprising transistors Q ₂ to which sends to the signal processing circuit 23, the signal processing circuit transistor Q ₃ which is driven by the monitoring data from the 23, the diode bridge DB ₁ via the transistor Q ₃ the output end a resistor R for short-circuiting, a transmission circuit 16 for transmitting a return signal of the current mode to the transmission line 4 via a resistor R when oN of the transistor Q _3, a unique address of the hot wire sensor terminal unit 2 An address setting unit 7 comprising a 6-bit dip switch to be set and a load number setting unit 8 comprising a 2-bit dip switch for setting a load number are provided, and the rectified output of the diode bridge DB ₁ is stabilized and fixed. A transistor Q ₄ for obtaining a DC voltage, a Zener diode ZD ₂ , and a smoothing capacitor C ₂
A hot-wire sensor 18 that operates by being supplied with power from the constant-voltage circuit 14 as a power source through a switch circuit 17 including transistors Q ₅ and Q ₆ , and turns on the hot-wire sensor 18. A comparator 20 for inverting the output from “L” to “H” if a detection signal is present;
After the inverted signal "L" of the output of the comparator 20 is input to the terminal, the terminal operates to generate an "H" output from the terminal. When the terminal becomes "H", the output of the terminal after a predetermined time determined by a time constant elapses IC21 that sets L to "L"
And the NAND of the inverted output of the timer IC 21 and the inverted output of the comparator 20 is "H".
Then, the transistor Q ₇ which turns on to turn on the monitoring input of the signal processing circuit 23 and the transistors Q ₇ and Q ₈ which operate in opposition to the output of the signal processing circuit 23 are connected to the set coil CL ₁ and the reset coil CL ₂ . The load control relay 6 includes a two-winding type latching relay that is set or reset when an exciting current flows, a reset circuit 19 that supplies power to the signal processing circuit 23, a clock generation circuit 22, and the like.

Here, the hot-wire sensor terminal 2 sets a load number with a 2-bit dip switch of a load number setting section 7 and sets a unique address with a 6-bit dip switch of an address setting section 8. Thus, the load number and the unique address are matched with the 6-bit set address of the control terminal 3. In the monitoring terminal 2a, the load number and the unique dress also match those of the control terminal 3. Two bits are added to the unique address, and these two bits distinguish the type and function of the terminal. When the central control unit 1 (see FIG. 5) accesses each terminal, a total of 8 bits of address data are used. AD will be transmitted.

The operation of the hot-wire sensor terminal 2 will be described in further detail. When the hot-wire sensor 18 detects a human body and turns on, the timer IC 21 of the hot-wire sensor terminal 2 starts operating and the signal processing circuit 23 operates. Is turned on. With this turning on, the signal processing circuit 23 returns the interrupt signal Vi by the transmission circuit 16, and after the above interrupt processing, monitors the data of the detection output of the hot-wire sensor 18 in response to the access from the central controller 1. At the same time as returning to the central controller 1 as data, the load control relay 6 is set or reset to turn on or off the relay contact r, and to turn on or off, for example, the lighting load 5 connected to the relay contact r via the power supply. Turn off.

On the other hand, the central control unit 1 creates control data for displaying the load operation state based on the monitoring data, and performs group control for controlling with other loads and control data for pattern control. create. Here, the lighting load 5 connected to the heat ray sensor terminal 2 is
The address of the monitoring terminal and the address of the heat ray sensor terminal 2 are associated with each other so that the monitoring terminal 2a (see FIG. 5) can be turned on / off by operating the operation switch S. It should be noted that the hot-wire sensor terminal 2 has a corresponding monitoring terminal 2 in the same manner as the control terminal 3 (see FIG. 5).
The load control relay 6 can also be driven according to the control data CD from the central control device 1 based on the operation data a. That is, when the operation data is sent from the monitoring terminal 2a having a corresponding relationship to the central control device 1 as the monitoring data, the central controller 1 changes the terminal that sends the control data CD based on the operation data to the correspondence. Find from the registered table. In this case, since the hot-wire sensor terminal 2 corresponds, if the operation data is to be inverted with respect to the current operation state of the lighting load 5 connected to the hot-wire sensor terminal 2, the central control device 1 Then, the control data CD for inverting the load state to the heat ray sensor terminal 2 is transmitted by the transmission signal Vs. The signal processing circuit 23 of the hot-wire sensor terminal 2 fetches the control data CD through the receiving circuit 14, inverts the operation state of the load control relay 6 based on the control data CD, and turns the lighting load 5 on or off. .

As described above, the hot-wire sensor terminal 2 drives the built-in load control relay 6 in conjunction with the detection output of the hot-wire sensor 18 and also controls the load control relay 6 based on the control data CD from the central control unit 1. Thus, the load control relay 6 can be driven. When the detection output of the heat ray sensor 18 is turned off, the timer IC 21 turns off the output after a certain time from the turning off, that is, turns off the monitoring input of the signal processing circuit 23, and delays the lighting load 5 off. The adjustment knob 29 of the variable resistor VR for setting the delay time is exposed on the lower surface of the body 33, and the user can adjust and set the delay time even after installation by removing the decorative plate 30 from below.

[0024]

According to the first aspect of the present invention, a central control unit is connected to a plurality of monitoring and control terminals to which a unique address is set by a pair of signal lines. A control signal for controlling the load by appropriately accessing the device and a transmission signal for transmitting a return standby signal for setting a return signal standby period are transmitted, and an appropriate impedance is applied between the signal lines from the terminal device during the return signal standby period. It is used in a remote monitoring and control system that transmits control data and monitoring data in a time-division multiplexed manner by sending monitoring data as a return signal consisting of a current mode signal obtained by short-circuiting through the system, and embedded in a building. A hot wire sensor with the indoor side as the detection direction is provided on the installed body, and the load control relay and the load control relay are driven in conjunction with the detection output of the hot wire sensor. In both cases, the terminal circuit unit has the function of sending the detection output data of the heat ray sensor as monitoring data to the central control unit by a return signal, and the function of driving the load control relay with the control data from the central control unit. Since it is built-in, it is possible to drive the load control relay built in the body in conjunction with the detection output of the heat ray sensor, so the load can be changed without the corresponding control terminal device. Can be turned on / off in response to the detection output of the switchboard. Therefore, when a control terminal is built into the switchboard, the space for the switchboard can be saved by eliminating the need for the corresponding control terminal. In addition, since the load control relay can be driven by control data from the central control device based on operation data of another monitoring terminal or the like, the relay is turned on / off by the load control relay. It is possible to target the group control or the pattern control the load to be further
Load connected to both ends of the relay contact of the load control relay
Control terminals and signal line connection terminals are arranged in parallel on the top
The wiring connection to the load and the connection of the signal line
There is an effect that that intensively carried out behind the scenes.

According to a second aspect of the present invention, in the first aspect of the present invention, there is provided an opening in the ceiling material having a flange having a lower portion surrounding the lower surface of the ceiling material and having a heat ray sensor mounted on the lower surface. The ceiling material is fixed to the ceiling by holding the ceiling material with the clamps attached to the upper part of the body protruding on the upper surface side of the ceiling material, and the body is fixed to the ceiling. And the detection direction of the heat ray sensor directed to below the ceiling can be easily set within a wide range.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of one embodiment of the present invention.

FIG. 2 is a side sectional view of the same.

FIG. 3 is a top view of the same.

FIG. 4 is a bottom view of the above.

FIG. 5 is a configuration diagram of an illumination control system using a terminal for a heat ray sensor.

FIG. 6 is an explanatory diagram of a transmission signal of the lighting control system.

[Explanation of symbols]

 2 Terminal device for heat ray sensor 4 Transmission line 6 Relay for load control 5 Lighting load 12 Terminal circuit section 15 Receiving circuit 16 Transmitting circuit 18 Heat ray sensor 21 Timer IC 23 Signal processing circuit r Relay contact

Claims (2)

(57) [Claims] 1. A central control unit is connected to a plurality of monitoring and control terminals to which a unique address is set by a pair of signal lines, and each terminal is accessed from the central control unit as appropriate to load. A control signal for controlling the control signal and a transmission signal for transmitting a return standby signal for setting a return signal standby period are transmitted, and the signal line is short-circuited from the terminal device through an appropriate impedance during the return signal standby period. It is used in remote monitoring and control systems that transmit control data and monitoring data in a time-division multiplex manner by sending monitoring data in a return signal consisting of a current mode signal, and is used for equipment embedded and installed in buildings. A hot-wire sensor is provided, and a load control relay and the load-control relay are driven in conjunction with the detection output of the hot-wire sensor and detected by the hot-wire sensor as monitoring data. Function sends the return signal power to the central control device and, incorporated in the device body and a terminal circuit portion having a function to drive the load control relay control data from the central control unit, a relay contact of the load control relay On both ends of
Connect the connected load control terminal and signal line connection terminal
A terminal for a heat ray sensor of a remote monitoring and control system, which is arranged in parallel on an upper surface portion . 2. A ceiling body having a flange portion in contact with a lower surface of the ceiling material at a lower periphery thereof, and a body having a heat ray sensor mounted on the lower surface portion is housed and arranged in a hole opened in the ceiling material. in a scissors fitting is mounted on the outlet has the device body upper sandwiching the ceiling material, characterized in that fixing the Utsuwatai ceiling 請
The terminal for a heat ray sensor of the remote monitoring and control system according to claim 1 .