JP3206822B2 - 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. 12 shows a remote monitoring control system for lighting control using a terminal 2 for a heat ray sensor.
In this system, a control terminal 3 and a monitoring terminal 2a are connected to a transmission line 4 composed of a pair of lines from a central control unit 1.
And the heat ray sensor terminal 2, and the control terminal 3
Is connected to a lighting load 5.

The operation of the time division multiplex transmission of this system will be described with reference to a transmission signal shown in FIG. 13. 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, mode data MD indicating a signal mode, address data AD, control data CD for controlling a load, checksum data CS for detecting a transmission error, and return data. Is a multipole (± 24 V) time-division multiplexed signal consisting of a signal return period WT for setting a return period (FIG. 13B), and data is transmitted by pulse width modulation.

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 match, the control data CD of the transmission signal Vs is fetched, and the return 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 transmitted after a short circuit).

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. 13C is returned, the interrupt processing means causes the heat sensor terminal 2 or the monitoring terminal 2a that has generated the interrupt signal Vi to return the return data. It has become. That is, the heat sensor terminal 2 sends an interrupt signal Vi in response to a change in the heat ray sensor or the monitoring terminal 2a operates the operation switch S. 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 as return data 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 return data.

[0006] Based on the return 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 return 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. Figure 14 shows an example of a terminal unit 2 for heat ray sensor, the signal line connecting terminal 10a for connecting the transmission line 4, by connecting a diode bridge DB ₁ between 10b rectifies the transmission signal Vs, the rectified output A transmission signal comprising a constant voltage circuit 11 comprising a transistor Q ₁ , a zener diode ZD ₁ , a smoothing capacitor C _1, etc., which stabilizes and obtains a constant DC voltage, and a CPU which operates using the DC from the constant voltage circuit 11 as a power supply a processing circuit 12, the signal line connection terminal 10a, receives the transmission signal Vs from 10b, a receiving circuit 13 comprising transistors Q ₂ to which sends to the transmission signal processing circuit 12, monitors the data signal from the transmission signal processing circuit 12 transistor Q ₃ which is driven by, a resistor R for short-circuiting the output terminals of the diode bridge DB ₁ via the transistor Q _3, transistor An address setting section comprising a transmission circuit 14 for transmitting a current mode return signal to the transmission line 4 via the resistor R when Q ₃ is turned on, and a 6-bit dip switch for setting a unique address of the terminal 2 for the hot-wire sensor. A transistor Q ₄ for obtaining a constant DC voltage by stabilizing the rectified output of the diode bridge DB ₁ , a Zener diode, and a load number setting unit 15 B comprising a 2-bit dip switch for setting a load number; A constant voltage circuit 16 including ZD ₂ , a smoothing capacitor C _{2, and the} like, and a pyroelectric element that operates by being supplied with direct current from the constant voltage circuit 16 as a power supply through a switch circuit 17 including transistors Q ₅ and Q ₆ . Ray sensor 1 including such a heat sensor
8, a comparator 20 for inverting the output from "L" to "H" if there is an ON detection signal of the hot-wire sensor 18, and an operation after the inverted signal "L" of the output of the comparator 20 is input to the terminal. To generate “H” output from the terminal,
When the terminal becomes "H", the timer IC 21 which changes the output of the terminal to "L" after a certain period of time determined by the time constant elapses, and the inversion output of the timer IC 21 and the inversion output of the output of the comparator 20 are undefined. A transistor Q ₇ which turns on when the logical product value becomes “H” to turn on the monitoring input of the transmission signal processing circuit 12 and a transistor Q ₈ which turns on at the output of the transmission signal processing circuit 12 and bypasses the terminal of the timer IC 21. And a reset circuit 19 for giving a power reset to the transmission signal processing circuit 12.

Here, the hot-wire sensor terminal 2 sets a load number with a 2-bit dip switch of a load number setting section 15B, and sets a unique address with a 6-bit dip switch of an address setting section 15A. 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,
These 2 bits distinguish the type and function of the terminal, and when the central controller 1 accesses each terminal, a total of 8 bits of address data AD are transmitted.

The operation of the hot-wire sensor terminal 2, the monitoring terminal 2a and the control terminal 3 will be described in further detail. The hot-wire sensor 18 of the hot-wire sensor terminal 2 detects a human body, and FIG. ), The timer IC 21 starts operating in the heat ray sensor terminal 2, and the monitoring input is turned on as shown in FIG. 15 (b).
Along with the turning on, the monitoring data is returned from the heat ray sensor terminal 2 to the central control unit 1 through the interrupt processing described above, and the central control unit 1 turns on the lighting load 5 based on the monitoring data. Is sent to the control terminal 3, and the illumination load 5 is inverted from the off state to the on state as shown in FIG.

When the operation switch S of the monitoring terminal 2a is operated as shown in FIG. 15 (c) while the monitoring input of the monitoring terminal 2a is in the ON state as described above, the above-mentioned interruption occurs. After the processing, the monitoring data is sent from the monitoring terminal 2a to the central control unit 1, and the central control unit 1 sends control data for inverting the operation of the lighting load 5 to the control terminal 3 based on the monitoring data. Transmission and lighting load 5
Is inverted from on to off as shown in FIG.

When the central control unit 1 accesses the group address for the address search in the above-mentioned interrupt processing for returning the monitoring data of the monitoring terminal 2a, the transmission signal processing circuit of the hot-wire sensor terminal 2 is used. In No. 12, since the 6-bit address data as the group address matches its own address, the transistor Q ₈ is turned on for a certain period to bypass the output of the timer IC 21. The transistor Q ₇ is turned off by a bypass, i.e. monitoring input for a certain period of time off heat ray sensor 18 even during the ON as shown in FIG. 14 (b).

Therefore, when the monitoring input rises again, the transmission signal processing circuit 12 returns the monitoring data to the central controller 1 after performing an interrupt processing corresponding to the rising, and the central controller 1 performs the monitoring based on the monitoring data. Lighting load 5
Is transmitted to the control terminal 3, and the lighting load 5 is again inverted from the off state to the on state as shown in FIG.

After that, when the detection output of the heat ray sensor 18 is turned off, the output of the timer IC 21 is turned off after a certain period of time, and the monitor input of the transmission signal processing circuit 12 of the terminal 2 for the heat ray sensor is turned off. I do. When the monitoring data for turning off is sent from the heat ray sensor terminal 2 in response to the fall of the monitoring input, the control data CD for turning off the lighting load 5 is sent from the central control unit 1 to the control terminal 3. And the lighting load 5 is turned off.

That is, in the lighting control system of FIG. 12, if the operation switch S on the monitoring terminal 2a is operated while the heat ray sensor 18 is on, the lighting load 5 is turned off for a certain period of time and then the lighting load 5 is returned to its original state. Return to the ON state. When the heat ray sensor 18 is turned off, the lighting load 5 is turned off after a lapse of a predetermined time. Next, as shown in FIG. 15A, when the heat ray sensor 18 detects the human body and turns on again,
As shown in (b), the monitoring input of the heat ray sensor terminal 2 is turned on. At the rise of the monitoring input, the monitoring data is returned from the heat ray sensor terminal 2 to the central controller 1 via an interrupt process, and the central controller 1 controls the control data for turning on the lighting load 5 based on the monitoring data. The lighting load 5 is inverted from the off state to the on state as shown in FIG. Thereafter, when the hot-wire sensor 18 is turned off, the monitoring input of the hot-wire sensor terminal 2 is turned off after a lapse of a predetermined time by the timer IC 21. The central control device 1 transmits control data for turning off the lighting load 5 to the control terminal 3 based on the monitoring data, and turns off the lighting load 5.

Next, the operation switch S of the monitoring terminal 2a is operated as shown in FIG.
When the monitoring data is sent from a to the central control device 1,
On the basis of the monitoring data, the central control device 1 determines the lighting load 5
The control data CD for inverting the above operation is transmitted to the control terminal 3, and the illumination load 5 is inverted from off to on as shown in FIG.

Thereafter, when the hot-wire sensor 18 detects a human body and turns on, the monitoring data for turning on is sent from the hot-wire sensor terminal 2 to the central control unit 1, and the central control unit 1 uses the lighting load 5 based on the monitoring data. Control data C for turning on
D is sent to the control terminal 3, but since the lighting load 5 is already in the ON state, the lighting load 5 maintains the ON state. Thereafter, when the hot-wire sensor 18 is turned off and the monitoring input of the hot-wire sensor terminal 2 is turned off after a lapse of a predetermined time from the off, monitoring data corresponding to this off is sent from the hot-wire sensor terminal 2 and the central control is performed. The control data CD for turning off the lighting load 5 is transmitted from the device 1 to the control terminal 3, and the lighting load 5 is turned off.

[0017]

In the above-mentioned conventional example, the 2-bit DIP switch of the load number setting section 15B for setting the unique address of the terminal 2 for the hot-wire sensor and the 6-bit DIP switch of the address setting section 15A are used. 16 is provided on the upper surface of the body 33 as shown in FIG. 16, that is, on the portion located behind the ceiling. Therefore, when changing the address, the terminal 2 for the heat ray sensor must be removed from the ceiling. did not become. 16 that perform the same configuration or operation as the configuration of the first embodiment described later are denoted by the same reference numerals and symbols as those of the first embodiment.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and an object of the present invention is to provide a remote monitoring control system for a heat ray sensor which can easily change the setting of a unique address without removing it from a ceiling. Providing terminal equipment.

[0019]

In order to achieve the above-mentioned object, according to the first aspect of the present invention, a central processing unit and a plurality of monitoring and control terminals each having a unique address are paired. Connected by a signal line, a central processing unit appropriately accesses each terminal device to transmit a control data signal for controlling the load and a transmission signal for transmitting a return standby signal for setting a return signal period, and transmitting the return signal period. The terminal transmits a return signal consisting of a current mode signal obtained by short-circuiting the signal lines via an appropriate impedance based on the monitoring data from the terminal device, so that the control data and the monitoring data are transmitted in a time-division multiplexed manner. Used in a remote monitoring and control system with a heat ray sensor mounted on the lower surface
Abuts the body and the lower surface of the ceiling material provided around the lower part of the body
And a hole that opens the container to the ceiling material
On the upper part of the body that comes out on the upper surface of the above ceiling material when stored and placed in
The ceiling material is sandwiched between the
A clamp for fixing the above body to the well, and placed indoors
Unique address setting means provided at the part of the body
The monitoring data is obtained based on the detection output of the heat ray sensor.
To create .

According to a second aspect of the present invention, a dip switch is used as the means for setting the unique address.
In the described invention, the unique address data is externally given as an optical signal, and the unique address setting means is constituted by means for writing the unique address data given by the optical signal into a rewritable memory. The signal light receiving portion is provided in a body part arranged on the indoor side.

[0021]

According to the structure of the present invention, the light receiving section for the optical signal of the dip switch which is a means for setting the unique address or the unique address setting means for setting the unique address by the unique address data given by the optical signal is provided. Since the unique address is provided in the body part disposed inside, when the unique address is changed, setting change and confirmation of the unique address can be easily performed from the indoor side without removing the body from the ceiling.

[0022]

The present invention will be described below with reference to examples. (Embodiment 1) FIGS. 1 to 3 show the structure of a terminal 2 for a heat ray sensor according to Embodiment 1 of the present invention. Electric element 18A
A heat ray sensor 18 composed of a hemispherical body 35 containing a printed circuit board 32 on which a signal processing circuit is mounted and a hemispherical lens 34 is rotated by rotating frames 36, 36 in the horizontal and vertical directions. I support it. The holding metal fitting 38 is a metal fitting for holding and holding the heat ray sensor 18 in the lower opening 37, and is fixed to the body 33 with a tapping screw 50.

A terminal cover 39 is provided at the upper end opening of the body 33.
Is fixedly attached with a tapping screw 42, and the terminal cover 3 is
9, a printed circuit board 40 on which a circuit of a remote monitoring control system such as the transmission signal processing circuit 12 is mounted,
Further, the printed circuit board 41 on which a control circuit such as the timer IC 21 is mounted is connected to the terminal cover 39 for the upper end opening of the body 33.
Are arranged at the parts to be attached. The signal line connection terminals 10a and 10b are provided on the upper surface of the terminal cover 39, and additional terminals 48a and 48b connected in parallel to both ends of the hot wire sensor 18 are provided. On the lower surface of the flange 31, the operation units of the dip switch of the address setting unit 15A and the dip switch of the load number setting unit 15B are exposed.

The flange 31 of the body 33 has a pair of long holes 4
3 are formed, and a mounting screw 44 is inserted through each elongated hole 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 mounted on the upper part of the terminal cover 39, and the other end can change the distance from the flange 31 of the body 33. In addition, a return spring 47 is connected to the clamp 45, and the other end is urged away from the flange 31.

Therefore, when the terminal 2 for a hot-wire sensor of the present invention is mounted in the mounting hole drilled in the ceiling X, the mounting screw 44 is loosened and the clamp 45 is released by the spring force of the return spring 47.
Is separated from the flange 31 of the body 33 (that is, the distance between the other ends of the clamps 45 is reduced). In this state, insert the body 33 into the mounting hole,
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. After fixing the terminal 2 for a heat ray sensor of the present invention to the ceiling X 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 18A of the heat ray sensor 18 of the heat ray sensor terminal 2 attached to the ceiling is directed downward through the lens 34.
When a person is present in the detection area, the pyroelectric element 18A detects this heat ray and the heat ray sensor 18 is turned on. In this embodiment, when it is desired to change or check the setting contents of the dip switch of the address setting unit 15A and the dip switch of the load number setting unit 15B, it is easy to do so simply by removing the decorative plate 30 from the indoor side.

Since the configuration of the terminal circuit is the same as that of FIG. 14, the configuration and the operation are omitted. (Embodiment 2) In the above embodiment, the dip switch is used to set the unique address. However, in this embodiment, the setting data is written in the EEPROM 60 shown in the circuit of FIG. That is, in this embodiment, a command and setting data transmitted by an optical signal such as infrared light from an external setting device (not shown) are received by the light receiving element 61A of the optical signal receiving section 61, and the received command and setting are received. The transmission signal processing circuit 12 writes the setting data to the EEPROM 60 based on the data, and the written setting contents are read when the transmission signal processing circuit 12 refers to the load number or performs the address determination. When a confirmation command for confirming the setting contents is sent from the setting device, the transmission signal processing circuit 12 reads the setting data written in the EEPROM 60 and reads out the setting data.
A signal is transmitted as an optical signal to the setting device through A, and the contents of the setting data are displayed on a display device provided in the setting device. Then, the light receiving element 61A and the light emitting element 6
2A is opened in the flange 31 as shown in FIGS.
The window 6 with the infrared transmitting filter 63 shown in FIG.
The decorative plate 30 is disposed so as to face the room 4, and when the setting data is changed or confirmed, the decorative plate 30 is removed from the indoor side in the same manner as in the first embodiment. The filter 63 is fixed by being pressed by a part of the name plate 65 shown in FIG.

As described above, in this embodiment, the setting change operation and confirmation can be easily performed at hand, and if the device is used also as a setting device for setting individual, pattern, group, etc., only one type of setting device is required. (Embodiment 3) Since the terminal cover 39 attached to the upper surface of the body 33 of each of Embodiments 1 and 2 is fixed by screws, the screws must be removed one by one when connecting the transmission line 4. However, in this embodiment, shafts 70 are provided on both sides of one end of the terminal cover 39 as shown in FIG. 8, and the shaft 70 is rotatably locked to a shaft rotating portion 71 provided at one end of the upper surface of the body 33. Then, the terminal cover 39 is rotatably hinged.
To eliminate the need to remove each screw when connecting.

Here, the body 33 in front of the shaft rotating portion 71
A retaining rib 72 is provided on the upper surface of the
The shaft 70 locked on the shaft is not easily disengaged. The shaft 70 can be locked to the rotary shaft 71 simply by pushing it between the concave portion 71a of the shaft rotary portion 71 shown in FIG. The other end of the terminal cover 39 has a locking claw 73 as shown in FIG.
When the connection is completed, the locking claw 73 is attached to the body 33.
The terminal cover 39 is fixed at the other end of the upper surface so as to be releasably locked to the locking portion 74 already obtained and the terminal cover 39 is fixed as shown in FIG.
FIG. 11 is a top view showing a state where the terminal cover 39 is removed.

As described above, in this embodiment, since the screws are not used for fixing the terminal cover 39, the terminal cover 3 can be easily connected at the time of connection.
Since the terminal cover 9 can be opened and the terminal cover 39 does not fall off the body 33, the terminal cover 39 does not lose.

[0031]

According to the present invention, a light receiving section for an optical signal of a dip switch which is a means for setting a unique address or a unique address setting means for setting a unique address with unique address data given by an optical signal is disposed indoors. When the unique address is changed, the unique address can be easily changed and confirmed from the indoor side without removing the body from the ceiling when the unique address is changed.

[Brief description of the drawings]

FIG. 1 is a bottom view of a first embodiment of the present invention.

FIG. 2 is a side sectional view of the first embodiment of the present invention.

FIG. 3 is a top view of the first embodiment of the present invention.

FIG. 4 is a circuit diagram of a second embodiment of the present invention.

FIG. 5 is a side sectional view of a second embodiment of the present invention.

FIG. 6 is a bottom view of Embodiment 2 of the present invention.

FIG. 7 is an exploded perspective view of a filter and a nameplate according to a second embodiment of the present invention.

FIG. 8 is an explanatory view of a main part of a third embodiment of the present invention.

FIG. 9 is an explanatory view of a main part of a third embodiment of the present invention.

FIG. 10 is a side sectional view of a third embodiment of the present invention, with a part omitted;

FIG. 11 is a top view of the third embodiment of the present invention with a terminal cover removed.

FIG. 12 is a configuration diagram of an illumination control system using a terminal for a heat ray sensor.

FIG. 13 is an explanatory diagram of a transmission signal of the lighting control system.

FIG. 14 is a circuit diagram of a terminal device for a heat ray sensor.

FIG. 15 is a time chart for explaining the operation of the terminal device for a heat ray sensor.

FIG. 16 is a top view of a conventional example.

[Explanation of symbols]

 3 Terminal for heat ray sensor 15A Address setting part 15B Load number setting part 18 Heat ray sensor 30 Decorative plate 31 Flange 33 Body

Claims (3)

(57) [Claims] A central processing 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 the central processing unit appropriately accesses each terminal to load. A transmission signal for transmitting a control data signal to be controlled and a return standby signal for setting a return signal period are transmitted, and signal lines are short-circuited through appropriate impedances based on monitoring data from the terminal device during the return signal period. by sending a return signal consisting of a current-mode signal obtained Te, used in a remote monitoring and control system which is adapted to time-division multiplex transmission of control data and monitor data Monodea
The body with the heat ray sensor attached to the bottom
Flange provided around the part and abutting on the lower surface of the ceiling material
And the above-mentioned container was housed and arranged in the hole opened in the ceiling material
Sometimes attached to the upper part of the body that comes out on the top of the ceiling material,
Hold the ceiling material between the flange and the
Clamp fitting to fix, and the part of the above-mentioned body arranged on the indoor side
And a unique address setting means provided at each position.
A terminal for a hot-wire sensor of a remote monitoring and control system, wherein the monitoring data is created by a detection output of a sensor. 2. A terminal for a heat ray sensor of a remote monitoring and control system according to claim 1, wherein a dip switch is used as the means for setting the unique address. 3. A unique address setting means comprising means for externally giving unique address data as an optical signal, and writing the unique address data given by the optical signal to a rewritable memory. 2. The terminal for a heat ray sensor of a remote monitoring and control system according to claim 1, wherein a light receiving portion of the optical signal is provided in a body part exposed to the indoor side.