JPH0834637B2 - Remote monitoring controller - Google Patents

Description

Description: TECHNICAL FIELD The present invention connects a central monitoring control device and a plurality of monitoring and control terminals to a pair of signal lines, and accesses each terminal from the central monitoring control device. The present invention relates to a control terminal unit of a remote monitoring and control device adapted to perform time division multiplexing transmission of data.

BACKGROUND ART Conventionally, a control terminal device of this type of remote monitoring control device is
It is designed to be attached to a relay control panel, etc., and cannot be attached to a switch box. There was a problem of difficulty.
On the other hand, it is conceivable to install a conventional relay control panel-mounted control terminal in the switch box. However, in the switch box, load side wiring (strong electric wire), multiplex transmission signal line (weak electric wire) However, there is a problem in safety because wiring is difficult to perform and there is a possibility that electrical troubles may occur due to contact and the like.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to facilitate the construction in a switch box, simplify the wiring work, and electrically Another object of the present invention is to provide a control terminal device for a remote monitoring control device that can prevent the occurrence of trouble.

DISCLOSURE OF THE INVENTION (Structure) The present invention connects a central monitoring control device, a plurality of monitoring terminals and a control terminal to a pair of signal lines, and accesses each terminal from the central monitoring control device. In a control terminal of a remote monitoring and control device that transmits data by time-division multiplexing, a tube part that is inserted into a wiring hole formed in the side wall of a switch box for embedded wiring is provided on the side surface of the terminal case. A protruding spring is provided, a fitting spring is provided on the peripheral surface of the tubular portion, and a wire insertion hole is bored in the end surface of the tubular portion, and a signal line is introduced into the terminal case through the wire insertion hole and the tubular portion. By doing so, the construction in the switch box can be facilitated, the wiring work can be simplified, and the occurrence of electrical trouble can be prevented.

(Example) Figure 1 through Figure 6 is shows one embodiment the present invention, the control terminal unit 3 _0, as shown in FIGS. 1 and 2, the switch box 30 for embedding wiring Cylindrical tube portion 11 that is fitted into the wiring hole 31 that is formed (knocked out) in the side wall.
Is provided on the side surface of the terminal device case 10, the fitting spring 12 is provided on the peripheral surface of the tubular portion 11, and the electric wire insertion hole 13 is bored in the end surface of the tubular portion 11. The signal line 4 is introduced into the terminal case 10 via the section 11. In the embodiment, the terminal case 10 is formed by the body 10a provided with the tubular half 11a and the cover 10b provided with the tubular half 11b, and is assembled by the two tapping screws 14. Has become. This terminal case 10
Printed boards 15a and 15b, on which the components that make up the terminal circuit are mounted, are housed inside, and the relay circuit section is mounted on the printed board 15a.
A transmission control circuit unit is mounted on 5b. Further, openings 16a, 16b corresponding to the channel setting switches Sa, Sb are formed on the upper surface of the terminal device case 10, and the channel cover 17 is covered so as to cover the openings 16a, 16b. There is. Furthermore, a wire insertion hole 19 for leading out a control output wire 18 connected to the load side (load and power supply) is provided on the side surface of the terminal case 10. Further, the fitting spring 12 formed by bending a band-shaped metal plate having elasticity has one end portion 12
The cylindrical portion 11 is fitted into the notches 12a 'and 12b' provided in the cylindrical portion 11 so that a is the free end and the other end 12b is the fixed end.
Is inserted into the wiring hole 31 of the switch box 30,
Between the outer surface of the terminal case 10 and the inclined surface of the end 12b,
The switch box 30 is elastically clamped.

FIG. 3 shows a schematic configuration of a remote monitoring control device according to the present invention, which includes a central monitoring control device 1 and switches SW ₀ , SW.
₁ , SW ₂ …… Monitoring terminal for monitoring operation input by 2 ₀ ,
2 ₁ , 2 ₂ ...... and a control terminal 3 ₀ , 3 ₁ , 3 ₂ ...... for controlling the loads L ₀ , L ₁ , L ₂ ...... are connected to a pair of signal lines 4 for central monitoring. The control device 1 accesses each of the monitoring terminals 2 ₀ , 2 ₁ , 2 ₂ ... to send back the monitoring data and control the loads L ₀ , L ₁ , L ₂ ... formed based on the monitoring data. The control data to be transmitted is transmitted from the central supervisory control device 1 by accessing the control terminals 3 ₀ , 3 ₁ , 3 ₂ ...

Figure 4 is shows an example of a transmission signal V _S to be transmitted from the central monitoring and control unit 1, transmission signal V _S to be transmitted as a bipolar signal (± 24V), the start signal ST indicating the start signal transmission When each terminal unit 2 _0, 2 _1, 2 ₂ ..., 3 _0, 3 _1, 3 ₂ ... and the address data signal AD for transmitting address data for accessing, controlling terminal unit 3 _0, 3 It is composed of a control data signal CD for transmitting control data to ₁ , 3, ₂ ... And a return waiting period signal WT, and each data is time-division multiplexed by pulse width modulation. Also, each monitoring terminal
The return signal V _B such as the switch monitoring data returned from 2 ₀ , 2 ₁ , 2 ₂ ...... or the control confirmation signal returned from the control terminal 3 ₀ , 3 ₁ , 3 ₂ ...... _S return waiting period signal
It is returned to the central monitoring and control device 1 by a current mode signal (a signal obtained by connecting a low resistance between the signal lines 4 as appropriate) in synchronization with WT. Each terminal unit 2 _0, 2 _1, 2 ₂ ..., 3 _0, 3 _1, 3 ₂ ...
In the case, when the address data transmitted by the transmission signal V _S coincides with its own unique address, the central supervisory control device 1
Being adapted to perform data transmission is regarded to have been accessed from the terminal unit 2 _0, 2 _1, 2 ₂ ..., 3 _0, 3 _1, 3 ₂ ...
The circuit power source of is obtained by rectifying and smoothing the transmission signal V _S. In the embodiment, as shown in FIG. 6, the central supervisory control device 1, the control terminals 3 ₁ , 3 ₂ ..., The load control remote control relays 5 ₁ , 5 ₂ ... And the remote control transformer 6 are provided.
Are arranged on the relay control boards 7a, 7b in the distribution board A, and the switches SW ₁ , SW ₂ ... for controlling the loads L ₁ , L ₂ ... are arranged on the operation switch board 8. And each switch SW
Monitoring terminals 2 ₁ , 2 ₂ for monitoring the states of ₁ and SW ₂ are built in the operation switch panel 8. Further, the operation switch panel 8 has name plates N ₁ and N ₂ corresponding to the switches SW ₁ and SW ₂ ,.
N ₂ ..., operation display lamps D ₁ , D ₂ ... are provided.

FIG. 5 is a block circuit diagram showing a circuit configuration example of the control terminal device _30. The terminal device circuit includes a power supply circuit 20 for rectifying and smoothing the transmission signal V _S to form a circuit power supply, and a channel setting switch. A channel setting unit 21 that sets its own unique address with Sa, and a channel setting switch Sb that selects and takes in any control bit of the control data transmitted to this unique address, and central monitoring A signal processing circuit 22 that determines whether or not it has been accessed by the control device 1 and fetches control data and outputs a load control signal according to a predetermined control bit, and drives an output relay 24 based on the load control signal. Relay drive circuit
23 and a monitoring circuit 25 that detects the driving state of the output relay 24 and inputs monitoring data (operation confirmation data) to the signal processing circuit
It is formed by.

The operation of the embodiment will be described below. Now, a control terminal unit 3 ₀ in the case of attaching to the switch box 30, the wiring hole 31 of the switch box 30 is bent as shown in FIG. 2 by pressing the distal end portion side for fitting spring 12 Tube part 11
When the base portion of the tubular portion 11 is inserted into the wiring hole 31, the fitting spring 12 returns and the base end portion 12 of the fitting spring is inserted.
Switch box 3 between b and the outer surface of terminal case 10
The side walls of 0 is resiliently clamped, so that it attached to the switch box 30 to the control terminal unit 3 ₀ Wattatchi. Further, the signal line 4 connected to the central supervisory control device 1 and other terminals is led out of the switch box 30 through an electric wire insertion hole 13 formed in the tip end surface of the tubular portion 11, and is connected to the load side. The control output line 18 is connected to the load L ₀ and the power supply AC100V via the wire insertion hole 19, and the strong and weak wires are completely separated, so the wiring work can be simplified. It is possible to prevent electrical troubles.

[Effects of the Invention] As described above, the present invention connects a central monitoring control device, a plurality of monitoring terminals and a control terminal to a pair of signal lines, and accesses each terminal from the central monitoring control device. In a control terminal of a remote monitoring and control device that transmits data by time-division multiplexing, a tube part that is inserted into a wiring hole formed in the side wall of a switch box for embedded wiring is provided on the side surface of the terminal case. A protruding spring is provided, a fitting spring is provided on the peripheral surface of the tubular portion, and a wire insertion hole is bored in the end surface of the tubular portion, and a signal line is introduced into the terminal case through the wire insertion hole and the tubular portion. Therefore, there is an effect that it is possible to provide a control terminal device that can be easily installed in the switch box, can simplify wiring work, and can prevent occurrence of electrical trouble.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention, FIG. 2 is an exploded perspective view showing an arrangement example of the same, FIG. 3 is a schematic configuration diagram of the same,
FIG. 4 is an operation explanatory view of the above, FIG. 5 is a block circuit diagram of a main part of the above, and FIG. 6 is a front view showing an arrangement state in a distribution board. 1 is a central supervisory control device, 2 is a monitoring terminal device, 3 is a control terminal device, 4 is a signal line, 10 is a terminal device case, 11 is a cylindrical portion, 12
Is a fitting spring, 13 is a wire insertion hole, 30 is a switch box, and 31 is a wiring hole.

Claims (1)

[Claims] 1. A central supervisory control device, a plurality of supervisory terminal units and a control terminal unit are connected to a pair of signal lines, and each central unit is accessed from the central supervisory control unit for time division multiplexing transmission of data. In the control terminal of the remote monitoring and control device as described above, the tubular portion fitted into the wiring hole formed in the side wall of the switch box for embedded wiring is projected on the side surface of the terminal device case, and the tubular portion of the tubular portion is With a fitting spring provided on the peripheral surface, a wire insertion hole is formed in the end surface of the tubular portion, and the signal line is introduced into the terminal case through the electrical wire insertion hole and the tubular portion. Remote monitoring and control device.