JPS62123893A - Remote supervisory and controlling equipment - Google Patents

Abstract

PURPOSE:To easily execute and inspect an operation by installing a central control unit, a terminal equipment for control and a remote control relay for load controlling in a distribution board. CONSTITUTION:The central control unit 1 and plural terminals 2 for monitoring and terminal equipments 3 for control to which specific addresses are set are connected by a pair of signal lines 4. In this case, as the modularized central control unit 1 and a remote control relay 6 are arranged in a distribution board 29, a special space for installing the central controlling unit 1 is not necessary, and the wiring of signal lines 4 between the central controlling unit 1 and terminal equipments 3 for control can be disposed in the distribution board 29 similarly to the wiring of power lines. Accordingly, execution becomes easy, and the inspection of operation as to whether a load 7 is controlled normally or not can be executed easily.

Description

Detailed Description of the Invention [Technical Field] The present invention connects a central control device and a plurality of monitoring and control terminals through a pair of signal lines to transmit monitoring data and voltage.
The present invention relates to a remote monitoring and control device that transmits time-division multiplexed control data. .

Conventionally, this type of remote monitoring and control device has a central control device,
Connect multiple monitoring and control terminals with unique addresses set using a pair of signal lines, access each terminal from the central control unit as appropriate, and collect the monitoring data returned from each monitoring terminal. At the same time as the data is received, control data for controlling the load based on the monitoring data is transmitted to each control terminal. By the way, in such remote monitoring and control equipment, signal lines are wired separately from normal power line wiring, and the central control unit, monitoring and control terminals are placed at appropriate locations. However, there were problems in that the construction was troublesome and it was difficult to inspect the operation.

[Object of the Invention] The present invention has been made in view of the above points, and its object is to provide a remote monitoring and control device that is easy to install and easy to inspect its operation.

[Disclosure of the Invention 1] The present invention connects a central control device and a plurality of monitoring and control terminal devices each having a unique address through a pair of signal lines, and connects each terminal device from the central control device as appropriate. In a remote monitoring and control device that accesses and transmits monitoring data of a load control operation switch and control data of a load control relay based on the monitoring data in a time division multiplex manner, a central control device, a control terminal device, The relay for controlling the load is placed in the distribution board, and it is possible to provide a remote monitoring and control device that is easy to install and easy to inspect.

(Embodiment) FIG. 1 shows a schematic configuration of an embodiment of the present invention, in which a central control device 1 and a plurality of monitoring terminals 2 and control terminals 3 each having a unique address set are connected to a Signal #it4
It is connected at The transmission signal Vs sent from the central control device 1 to the signal line 4 includes a start pulse signal ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, a terminal device 2, A bipolar (±24V) signal consisting of an address data signal AD for calling the terminal device 2.3, a control data signal CD for controlling the load 7, a checksum data signal C8, and a return standby signal WT for setting the return signal period from the terminal device 2.3. It is a time division multiplexed signal, and data is transmitted using pulse width modulation. When the address data of the transmission signal Vs received via the signal line 4 and its own unique address data match, each terminal device 2, 3 takes in the control data of the transmission signal Vs, and returns the transmission signal Vs. Standby signal W
The monitoring data signal is converted into a current mode signal (signal 9) in synchronization with T.
4 are short-circuited via an appropriate low impedance and sent back as a signal). The central control device 1 also includes a dummy signal transmitting means for constantly transmitting a dummy transmission signal Vs, and an interrupt signal Vi as shown in FIG.
is provided with an interrupt processing means that detects the interrupt generating terminal 2 when the interrupt is received, accesses the terminal 2, and sends back the monitoring data.On the other hand, the monitoring terminal 2 has a monitoring input. When this happens, an interrupt signal Vi is generated in synchronization with the start pulse signal ST of the dummy transmission signal Vs, and the central controller li! interrupt generation means for returning its own unique address data in synchronization with a return standby signal WT of the transmission signal Vs in the address confirmation mode;
A data return means is provided for returning monitoring data corresponding to the monitoring input when the transmission signal Vs of the interrupt access mode in response to an interrupt is transmitted from the central control terminal 2 to the central control terminal 2. Based on the monitoring data sent back to the control device 1, control data to be transmitted to the control terminal 3 is created. The monitoring terminal 2 also includes an individual operation switch 5a that individually controls loads 7 such as lighting, an individual operation selector switch 5b that individually controls each of the plurality of loads 7, and an individual operation selector switch 5b that individually controls the plurality of loads 7.
A pattern switch 5c controls the lighting load 7 at once, a dimmer switch 5d controls the lighting load 7 such as incandescent lamps and fluorescent lamps, and a dimmer switch 5d controls the lighting load 7 temporarily (30 seconds or 3 degrees). 30sec or 3
00sec) Monitoring input means such as a delay switch 5f and a pattern input switch 5g are connected, and the pattern input switch 5g is connected to a timer setting unit 5h.
, a calendar type time switch 511, an indoor EE switch 51%, and sequence control data such as an output to the daylight sensor 5 are selectively inputted (in a preset pattern). Booster 1 inserted into signal line 4
0 guarantees attenuation of the transmission signal Vs. Also,
The interlocking switch terminal 3' connected to the terminal end of the signal #14 controls the connection with the signal #I4' of other remote monitoring devices with the same specifications, and transmits connection commands from the central controller 1. The signal Vs selects whether or not to connect the two signal lines 4.4', and both the signal lines Ai4.
4', the system scale increases and the central controller 1 can monitor and control the terminals 2 and 3 connected to both signal lines 4 and 4°. . The remote control switch 8 is connected to the control terminal 3
It is designed to output a control output equivalent to the control output of
6a2f...6b,,6b2. . . . and the load 7 is controlled in parallel.

In the figure, 27 is the control terminal 3 and the remote control relay 6a.
,.

6a2. 6b, 6b2, and is a transformer that supplies power to the central control device 1, control terminal 3, remote control relay 6a, 6a2. """ 6b+ and 6b2 are arranged in distribution #129. Signal transmission between the monitoring terminal device 2 and the monitoring input means may be performed using a wireless transmitter/receiver, and The pattern switch 5c may be provided with an all-on or all-off switch that turns on or off all the loads 7 at once.

Figure tlS2 is a circuit diagram of a specific configuration example of the central control device 1, and the central control device 1 includes a signal processing circuit 1 consisting of a CPU.
3, a transmission signal generating section 14, a received signal discrimination circuit 15, a transmitting/receiving circuit 16 consisting of a signal transmitting circuit 16a and a signal receiving circuit 16b, and a power supply circuit 17, and includes a dummy signal transmitting means and an interrupt processing The means is realized by a signal processing circuit 13. In addition, the transmitting/receiving circuit 16
The signal transmitting circuit 16a includes a 7-point driver PC1 and a transistor Q. -Q4, op amp op, op2 and 3
r1 child regulator VR2, VR*, and transistors Q, ,Q, according to *H*,'L''' of the pulse width modulated data signal output from the transmission signal generator 14. Alternatively, by turning on Q, , Q, a bipolar transmission signal Vs is formed, the voltage is made constant by the three-terminal regulator VR2, VR, and the signal is sent to the signal line 4.On the other hand, when the signal is received The circuit 16b is 7t)
It is formed of a coupler P C2, operational amplifiers Op,, op, diodes D1 to D1, a Zener diode ZD, and a light emitting diode LD, and the terminal device 2,
3, the current mode return signal is sent back as a current mode signal through the signal line 4 through the current detection resistor R1 and the zener guide (ZD).

Detection is performed by a return signal detection circuit comprising an operational amplifier OP and an operational amplifier OP. That is, when the voltage across the current detection resistor R, through which the signal current flows, exceeds the reference voltage set by the Zener diode ZD, plus the voltage across the resistor R, due to the average signal current (by setting an appropriate impedance) When the signal lines 4 are short-circuited and a relatively large current (>average current + predetermined value) flows through the operational amplifier O
P3 output becomes L", and the light emitting diode L for operation display
The light-emitting diodes of D1 and 7-otocoupler PC2 are turned on to indicate that the return signal has been received by lighting the operation display light-emitting diode LDI, and the received signal is transmitted through the 7-ototransnostar and transistor Q of 7-otocoupler PC2. The signal is input to the received signal discriminating circuit 15. A divided voltage obtained by dividing the reference voltage set by the Zener diode ZD by the resistors R2-R3, and both ends of the current detection resistor R4, which is input via the noise removal circuit consisting of the resistor R4 and the rising capacitor C1. A short-circuit detection circuit for the signal line 4 is formed by the operational amplifier OP4 and the good voltage D2, which compare the voltage, and when the signal line 4 is short-circuited and exceeds a large short-circuit voltage, the output of the operational amplifier OP4 becomes L1, The operation display light emitting diode LD and the light emitting diode of the 7-oto coupler PC2 are turned on via the backflow blocking diode D, and the signal M is generated by continuously lighting the operation display layer light emitting diode LD.
4 is short-circuited.

±, the power supply circuit 17 is a diode bridge DB,,D
B2 and a three-terminal regulator VR, which rectifies and smoothes the signal power supply AC to supply power to the transmitting/receiving circuit 16, and also controls the signal power supply AC. The source AC2 is rectified and smoothed to make it a constant voltage, and the signal processing circuit 13 and the transmission signal generation circuit 14
Also, power is supplied to the reception discrimination circuit 15.

FIG. 3(a) is a circuit diagram showing a specific configuration example of the control terminal 3 that receives the transmission signal Vs from the central control device 1 and controls the remote control relay 6. A signal receiving circuit 20 receives a transmission signal Vs transmitted via #14, an address setting circuit 21 sets a unique address, detects transmission, takes in control data when an address match is detected, and outputs a control output Vc. At the same time, the signal processing circuit 22 forms return monitoring data based on the monitoring input, and the set pulse signal Vcs of the remote control relay 6 rises and reset pulse signal Ver is formed in accordance with H"IIL" of the control output Vc. a pulse conversion circuit 23;
17 Otothyristor PS with transistors Q a and Q bB forming drive signals for driving remote control relay 6
a, a relay drive circuit 24 consisting of PSb, a monitoring input circuit 25 consisting of seven automatic coupler PCs that input monitoring information indicating the operating state of the remote control relay 6, and a transmission signal V.
The control terminal 3 is formed with a return circuit 26 that returns the monitoring data signal as a current mode signal to the central control unit e1 during the return signal period set by the return standby signal WT of s. When accessed from the remote controller 1, the controller receives the transmitted control data and outputs a drive signal for the remote control relay 6 that turns on and off the load 7, and also sends monitoring data indicating the operating state of the remote controller 6 to the central controller 1. It is supposed to be sent back. In addition, the unique address setting for the monitoring terminal 2 and the control terminal 3 is 8.
The lower 6 bits of the bit address data are used as a user setting section that can be set as appropriate by the user, and the upper 2 bits are used as a manufacturer setting section that indicates the type of terminal.
, 3 can be easily made to correspond to each other by simply setting the user setting section of the unique address of 3 to the same value.
The load 7 is connected to the control terminal 3 based on the monitoring data returned from the monitoring terminal 2 set to the same value.
For example, if the 1st and 2nd bits of the address data of the monitoring terminal 2 are set to 0,0'',
The 1st and 2nd bits of the address data of the control terminal 3 are set to 1.
, 0'' and the 3rd to 8th bits are settable by the user, the monitoring terminal 2 is assigned channels θ to 63, and the control terminal 3 is assigned channels 128 to 1.
When 91 channels are assigned to each channel and the 3rd to 8th bits are set to the same value, the correspondence is 1:1 (0
→128.1→129,...63→191). The configuration of the monitoring terminal 2 is approximately the same as that of the control terminal 3 described above, and the difference is in the interrupt processing that transmits an interrupt signal Vi and returns monitoring data when there is a monitoring input. The signal processing circuit 22 realizes the interrupt generation means and data return means for performing the above operations, and the pulse conversion circuit 23 and drive circuit 24 are naturally omitted.

In addition, the signal processing circuit 22 can handle whether the signal input to the monitoring input terminal is a continuous signal or a pulse signal.

By the way, the remote control relay 6 that controls on/off the load 7 includes a latching relay RR having an interlocking main contact ra and an auxiliary contact rb, and a current switching layer diode Da connected in series to the excitation coil of the latching relay RR.
, Db, and when a set current of a predetermined level flows for a predetermined time from the AC power supply AC3 stepped down by the transformer 27 to the excitation coil L via the diode Da, the main contact r & turns on and the load 7 The diode [)b, which is supplied with power from the commercial power supply AC, is switched ia, and when the reset current flows from the alternating current [AC,] to the excitation coil L via the diode Db, the main contact ra is turned off. Then, the power supply to the load 7 is stopped, and after the assistance, α'b is reversed and the diode Da is switched to be connected to the exciting coil L.

Therefore, when the 7 otothyristor PSa of the drive circuit 24 of the control terminal 3 is turned on, the latching relay RR of the remote control relay 6 is set to the on side, the load 7 is turned on, and the 7 otothyristor PSb is turned on. When this occurs, the latching relay RR is reset to the off side and the load 7 is turned off. In this case, since the remote control relay 6 is formed using a latching relay RR, it can also be controlled by a remote control switch 8' that generates signals equivalent to the set signal and reset signal output from the drive circuit 24. , the load 7 is connected to the central control unit r! via the signal #I4 and the control terminal 3. 1
Control data transmitted from 1 It 11! -1
-11j -, 4Q'szt41jMshinjit-) n
tdlj&++ Is available. In addition,
In the figure, only a control output for controlling one remote control relay 6 is shown, but in the embodiment, control outputs for controlling four remote control relays 6, respectively, are output from the signal processing circuit. FIG. 3(b) is a specific circuit example of a remote control switch 8°, with a push button switch SW0 and a diode D.
A set consisting of a', Db', a reset signal generation circuit, light emitting diodes LDa, LDb and diode-FDa
", Db" are each composed of on and off display circuits connected in series. It goes without saying that the remote control switch 8' may be configured with a circuit provided with an on switch and an off switch in place of the transistors Q a and Q b of the drive circuit 24 of the control terminal 3.

4 and #S5 show the central control device 1, the control terminal device 3, and the remote control relays 6a1, 6a2. for load control.
+++++ 6 bIt6 bz--” 6 el, 6
This figure shows an example of the installation of a remote control relay 6 (hereinafter abbreviated as remote control relay 6), and its dimensions may differ from those of other wiring devices (for example, electromagnetic relays, breakers, transformers, etc. installed in the distribution board). Similarly, the monitoring terminal 2, which uses the standardized central control unit r!t1, the remote control relay 6, the transformer 27, and the time limit contact (S voltage contact) of the timer circuit TC as the monitoring input, outputs the upstream contact output. The control m eyebrow dust remover 3'' is installed in two rows on the DIN rail 28 on which other wiring devices are installed, and a remote control relay is installed in the empty space formed between the two rows. In the figure, 30 and 31 are switches for setting a unique address, and as mentioned above, the lower 6 bits of the 8-bit address data are set on the user side. It can be set freely with the selector switch 5b for 5m.
' and a pattern switch 5c' are integrated, and the selector switch 5b' has an individual fabrication function that controls the load 7 individually, and a pattern input tfi function that inputs pattern control data in pattern control. 5n is a pattern switch 'n
It is a pattern switch with a pattern setting switch section 5nb arranged side by side on the side of LD 3mw LD
3b is a light emitting diode for on/off indication, N is a name plate, and SW is a push button switch. Further, the monitoring terminal 62 is built in the main body circuit section (disposed on the back side of the front panel) of each switch 5 va, 5 n.

The operation of the embodiment will be specifically explained below using the flowcharts shown in FIGS. 7 and 8. Now, when the power is turned on to the central control device 1 and the monitoring control operation starts, the central control device fil first sends each control terminal 3
is accessed sequentially to check the load control status of each control terminal 3, and match the operation display of the operation indicator lamp (not shown) provided corresponding to each load 7 with the operation status of the load 7. . Next, the dummy signal transmission means of the central control device 1 sends out to the signal line 4 a dummy transmission signal Vs that accesses a free address other than the unique address set in the monitoring or control terminals 2 and 3. Ru. In the normal state in which the dummy transmission signal Vs is constantly transmitted as described above, each of the terminals 2 and 3 cannot match the 7 codes, so they act as a central control unit. Here, when a monitoring input is input to any of the monitoring terminals 2 from the monitoring input means,
For example, when an operation switch that turns on the load 7 is pressed and an on operation signal is input to the monitoring input terminal of the monitoring terminal 2, an interrupt is generated in the signal processing circuit 22 of the monitoring terminal 2. The means immediately generates an interrupt signal Vi and sends it to the signal line 4 in synchronization with the start pulse signal ST of the dummy transmission signal Vs. The interrupt processing means of the central control unit M1 accesses the interrupt generating terminal 2 and causes it to return address data in order to detect the interrupt generating terminal 3 when the interrupt signal Vi from the monitoring mjI terminal 2 is received. Transmission signal Vs in address confirmation mode
Send. This 7-address confirmation mode transmission signal Vs is received by the interrupt generation terminal 2, and the interrupt generation means of the interrupt generation terminal 2 generates its own signal in synchronization with the return standby signal WT of the address confirmation mode transmission signal Vs. Return unique address data. This returned unique address is No. 4F or 4S I! 1 Su9yama $ 朱I + 湘收入器 1 目Wari n ; Enter In the mumut embedding means, the primary interrupt generating terminal transmits the interrupt access mode transmission signal Vs to the specified interrupt terminal device 2. When the transmission signal Vs for interrupt access is received, the data return means of the device 2 sends the monitoring data corresponding to the monitoring input to the central controller 1 in synchronization with the return standby signal WT.
send it back to The monitoring data sent back from the interrupt generation terminal 2 to the central control device 1 in this way is processed by the signal processing circuit 13 of the central control device 1, and control data for controlling the load 7 is created and handled. A transmission signal Vs for accessing the control terminal 3 is sent out. This transmission signal V
The control terminal 3 that has received s controls the remote control relay 6 based on the transmitted control data to turn on the load 7,
At the same time, monitoring data indicating the control state of the load 7 is sent back to the central control device 1. The central control device 1 controls the operation indicator lamp based on the monitoring data sent back from the control terminal 3 to check the operating status of the load 7! ! ! ! The display is updated, a series of monitoring side m operations are completed, and the process returns to a standby state in which the dummy transmission signal Vs is constantly transmitted. In this way, in the embodiment, the central control wave r! 11 is always in an interrupt standby state by transmitting a dummy transmission signal, and when there is a monitoring input to the monitoring terminal 2 and an interrupt signal is transmitted, it immediately responds and returns monitoring data from the interrupt generating terminal. Therefore, even if the number of terminal devices 2.3 increases, responsiveness can always be improved regardless of the input timing of the monitoring input. Further, the control terminal 3 outputs a set signal or a reset signal to control the remote control relay 6 based on the control data, and the remote control relay 6 controls the load 7. By connecting the remote control switches 8, 8 to the load 7, the control output of the control terminal 4 and the remote control switches 8, 8
Parallel control is possible with the control output of 2, and the repeatability of the load 7 can be improved. Furthermore, the operation display light emitting diodes (2) and (D) provided in the transmitter/receiver circuit 16 display the reception of the return signal (flashing) and the short circuit of the signal line 4 (continuously lit), thereby displaying the reception status. Since both the short circuit display and the short circuit display are performed by the same operation display light emitting element, the structure is simplified and the cost can be reduced. Furthermore, the central control wave f! t1, the remote control relay 6 is installed in the distribution board 29, so the central control vcr! 11, and the wiring of the signal line 4 between the central control device 1 and the control terminal device 3 is done within the distribution board 29 in the same way as the wiring of the power line. Mainly, the central control device 1, the control terminal device 3, and the remote control relay 6 for load control are arranged adjacent to each other in the distribution board 29, so that the load 7 can be easily installed. It is easy to check whether the system is being controlled properly, and construction and maintenance are easy.

[Effects of the Invention 1] As described above, the present invention connects a central control unit and a plurality of monitoring and control terminals each having a unique address through a pair of signal lines, and transmits central control waves-1, h As burial mound ↓ warm 1 啼j+ + + H-' + + fi -ee-4
414M In a remote monitoring and control device that time-division multiplex transmits the monitoring data of the lr1 operation switch and the control data of the load control relay based on the monitoring data, the central control device, the control terminal device, and the load control relay are It is installed inside the distribution board, and the wiring of signal lines between the central control unit and the control terminals can be done inside the distribution board in the same way as power line wiring, making installation easy. In addition, since the central control unit, control terminals, and load control relays are located adjacent to each other in the distribution board, it is easy to check whether the load is being controlled properly, and it is easy to install. This has the effect of making maintenance easier.

[Brief explanation of drawings]

Figure m1 is a block circuit diagram showing a schematic configuration of an embodiment of the present invention, Figures 2 and 3 (a) and (b) are circuit diagrams of the main parts of the same, and Figure 4 is a top view of the main parts of the same. Figure 5 is a perspective view of the main parts of the same as above, No. 61! FIGS. 1 to 8 are explanatory diagrams of the same operation. 1 is a central control unit, 2 is a monitoring terminal, 3 is a gill net FEI
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Claims (1)

[Claims] (1) Connect the central control unit and multiple monitoring and control terminals with unique addresses set using a pair of signal lines, and access each terminal from the central control unit as appropriate to perform load control operations. In a remote monitoring and control device that transmits monitoring data of switches and control data of load control relays based on the monitoring data in a time-division multiplex manner, the central control device, control terminals, and load control relays are installed in a distribution board. A remote monitoring and control device characterized in that it is arranged in.