JPH03107298A - Terminal unit for switch monitoring and selector switch terminal unit - Google Patents

Abstract

PURPOSE:To easily set a function from a front face side. to facilitate the formation of a selector switch terminal unit and to reduce a cost by providing an optical wireless receiving part to set the function at the central part of a terminal unit case. CONSTITUTION:The terminal unit is formed as follows. Namely, operation displaying light emission diodes 24 are juxtaposed on the upper part of the terminal unit case 2', and simultaneously, the operating handles 22 of operating switches are juxtaposed on its lower part, and an optical wireless receiving part opening 25, a receiving photodiode PD and a projecting light emission diode LD for function setting such as address setting and function setting, etc., are provided on the central part of the terminal unit case 2'. The function setting such as the address setting and classification setting, etc., can be easily executed without dismounting the terminal unit case 2'.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a switch monitoring terminal unit and a selector switch terminal unit that monitors switches by receiving time-division multiplexed transmission signals from a central control device. It is something.

[Prior Art] FIG. 6 shows a schematic configuration of a remote monitoring and control system using a selector switch terminal according to the present invention, in which a central control bag Wt1, a switch S with a unique address set,
A plurality of monitoring terminals 2 that monitor S4, loads L1 to L,
A control terminal 3 that controls the wireless relay terminal 7
, an external interface terminal 8 and a selector switch terminal 9 are connected by a pair of signal lines 4, and the transmission signal Vs sent from the central control unit 1 to the signal line 4 is as shown in FIG. 7(a). As shown, a start pulse signal ST indicates the start of signal transmission, a mode data signal MD indicates the signal mode, an address data signal AD transmitting 8-bit address data for calling the terminals 2.3.7 to 9, and a load 1. - Control data signal CD, checksum data signal CS, and terminal device 2 that transmit control data for controlling L4
．． 3. Return standby signal W that sets the return period from 7 to 9
It is a bipolar (±24V) time division multiplexed signal consisting of T,
Each terminal device 2.3.7 to 9, which transmits data by pulse width modulation, uses the address data of the transmission signal Vs received via the signal line 4 and its own unique address data. When a match occurs, the control data of the transmission signal Vs is taken in, and the monitoring data signal is converted into a current mode signal (
The signal wires 4 are short-circuited via an appropriate low impedance, and the signal is sent back as a signal. Further, the central control device M1 includes a dummy signal transmitting means that always sends out a dummy transmission signal in which the mode data signal MD is in a dummy mode, and one of the monitoring terminal device 2 or the wireless relay terminal device 7, and an external interface terminal device. 8,
FIG. 7(b) returned from selector switch terminal 9
When an interrupt signal Vi as shown in FIG.
Interrupt processing means is provided for accessing 9 and returning the monitoring data. In addition, in the central control unit N1,
Based on the monitoring data sent back to the central control device 1 from the monitoring terminal 2 or the wireless relay terminal 7, the external interface terminal 8, and the selector switch terminal 9 as described above, the corresponding load, ~L, Create control data to be transmitted to the control terminal 3 that controls the
The control data is transmitted to the control terminal 3 via the signal line 4.
It is designed to time-division multiplex transmit and load the signals, and to control L4.

The wireless relay terminal device 7 is a terminal device that relays data of an optical wireless system consisting of an optical wireless transmitter Y, an optical wireless receiver is received by the optical wireless receiver X, the received data is received via the wireless signal line 4a, and this data is transferred to the central control device 1.

Further, the external interface terminal 8 is a terminal that performs data transmission with the external control device 18a, and the selector switch terminal 9 is a terminal that centrally controls a large number of loads. In addition, the monitoring terminal 2 and the control terminal 3 installed in the distribution board 6 or the relay control board 6a are as follows:
The distribution board has the agreed dimensions, and its control output controls a remote control relay 5 for load control (a latching relay that can also be turned on and off using a hand switch).

By the way, conventionally, a selector switch terminal 9 in which a large number of switches S+, St, Sco... s,, St, Sa...
There is a device that integrates a terminal circuit that monitors ... and has function setting switches such as an address setting switch and a type setting switch on the back. Depending on the number of switches, there are 16 circuits, 24 circuits, etc. printed. Board (switch SL,
S2. S3 (where the terminal circuit is mounted) were formed separately.

[Problem M to be solved by the invention] However, in the conventional example described above, the function setting switch for setting the address, setting the type, etc. was provided on the back of the terminal case. In addition to the problem of cumbersome operation, when forming multiple types of selector switch terminals with different numbers of switches, switch S! , S2゜S, . . . It is necessary to separately create a printed circuit board on which terminal circuit elements are mounted, which reduces the mass production effect and increases costs. Ta.

The present invention has been made in view of the above points, and its purpose is to provide a switch monitoring terminal device that can easily perform function settings such as address settings, and further, It is possible to easily form multiple types of selector switch terminals having different numbers of switches at low cost.

[Means for Solving the Problems] The switch monitoring terminal unit of the present invention has light emitting diodes for displaying operation arranged in a row in the upper part of the terminal case, and operation handles for operation switches arranged in a row in the lower part, An optical wireless receiver is installed in the center of the terminal case to perform function settings such as address and type settings.

Further, a selector switch terminal device according to a second aspect of the present invention is one in which a plurality of the above-mentioned switch monitoring terminal device units are arranged in a row on a mounting frame.

[Function] The present invention is configured as described above, and a light emitting diode for displaying operation is arranged in a row on the upper part of the terminal case, and
The operation handles for the operation switches are arranged in a row at the bottom, and the optical wireless receiver for setting functions such as address and type settings is provided in the center of the terminal case to form a terminal unit for switch monitoring. Function settings such as address settings and type settings can be made without removing the device case.
This can be done easily from the front side.

Further, in the selector switch terminal device of claim 2, by arranging a plurality of the switch monitoring terminal units in a row in a mounting frame, selector switch terminal devices having different numbers of switches can be formed easily and at low cost. It has become.

[Embodiment] FIGS. 1 to 4 show an embodiment of the present invention, in which a terminal case 20 consisting of a body 20a and a cover 20b is shown.
Light-emitting diodes LDa and LDb for operation display are arranged in a row on the upper part of the terminal case 20, and operation handles 22 for operation switches SI to S4 are arranged in a row in the lower part, and function settings such as address setting and type setting are arranged in the center of the terminal case 20. Optical wireless receiver (aperture 25 and photodiode PD for light reception)
, a light emitting diode LD for projecting light). In the figure, 21 is a printed circuit board on which a terminal circuit including an operation switch SI is mounted, 23 is an opening from which the operation handle 22 projects, and 24 is a light emitting diode LDa.

An opening for exposing the LDb, 26 a filter for cutting unnecessary light, 27 a screw insertion hole, 28 a fitting claw, and 29 a fitting portion with which the fitting claw is engaged. Here, the operating handle 22, which has an engaging claw 22a and a pressing protrusion 22b of the switch S1 protruding from its back surface, is fitted into the cover 20b and integrated as an operating knob.
Assembly is easy. Further, the printed circuit board 21 is assembled so as to be sandwiched between the body 20a and the cover 20b. Furthermore, a partition rib 25a is provided within the opening 25.

FIG. 4 shows an example in which a selector switch terminal 9 for 16 circuits is constructed by arranging four of the above-mentioned switch monitoring terminal units 2' in a row on a mounting frame 30. A translucent name cover 32 is attached to the mounting frame 30 with mounting screws 31 and has an operation handle protrusion hole 32a.
It is formed by covering the decorative plate 33 as well as covering the decorative plate 33.

FIG. 5 shows a monitoring terminal 2 that monitors switches S, ~S,
This shows an example of the circuit configuration, and includes a signal processing circuit 10 made up of a microcomputer, an address setting part 11 made of F, EPROM, and an optical signal receiving part 12 made of a photodiode PD and transistors Q, , Q. and,
It is formed of an optical signal transmitter 13 made up of a light emitting diode LD and a transistor Q, a power supply circuit 14 made up of a Zener diode ZD and a transistor Q2, a return circuit 15 made up of a resistor R and a transistor Q, and a reset circuit 16. There is. Here, the transmission signal Vs transmitted via the signal line 4 is rectified by the diode bridge DB, and is inputted to the signal input terminal of the signal processing circuit 10 via the transistor Q, and includes the signal processing circuit 10. The circuit power for each terminal circuit is supplied via a power supply circuit N14 that makes the rectified voltage of the transmission signal Vs a constant voltage.

The signal processing circuit 10 also determines whether the unique address data set in the address setting section 11 matches the address data of the received transmission signal Vs, and captures the control data to be transmitted subsequently when the addresses match. , Light emitting diode LD for load operation indication (on → red, off → green)
a, LDb, and checks the states of switches 81 to S4 to form monitoring data, and sends the return circuit 15
A return signal V is sent to the signal line 4 to return the monitoring data to the central control unit 1 as a current mode signal (a resistor R with a low resistance value is inserted between the signal lines 4).

On the other hand, writing of data to the EPROM constituting the address setting section 11 is performed by the signal processing circuit 10, and the data to be written is processed by signal processing of the signal received by the optical signal receiving section 12. 3
2-bit predetermined data is written. Here, the signal received by the optical signal receiving section 12 is an optical wireless signal transmitted from a data setting device (not shown), and the response signal such as a reception confirmation signal from the optical signal transmitting section 13 is an optical wireless signal. The signal is transmitted as a signal, and data can be reliably transmitted wirelessly between the monitoring terminal 2 and the data setting device.

[Effects of the Invention] The present invention is configured as described above, and includes a row of light emitting diodes for displaying operation in the upper part of the terminal case, and
The operation handles for the operation switches are arranged in a row at the bottom, and the optical wireless receiver for setting functions such as address and type settings is provided in the center of the terminal case to form a terminal unit for switch monitoring. Function settings such as address settings and type settings can be made without removing the device case.
This has the advantage that it can be easily performed from the front side.

In addition, since the selector switch terminal is constructed by arranging multiple switch monitoring terminal units in a mounting frame, selector switch terminals with different numbers of switches can be formed easily and at low cost. effective.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of one embodiment of a switch monitoring terminal unit according to the present invention, FIG. 2(a) is a top view of the same as above,
Figure 2(b) is a side view of the same partially broken lFr, and Figure 2(e)
) is a back view of the same as above, Figure 3(a) is a front view of the main parts of the same as above,
Figure 3(b) is the same A0-A line sectional view, Figure 3(c)
) is a sectional view taken along line B0 to B7 of the same as above, FIG. 4 is an exploded perspective view of one embodiment of the selector switch terminal device according to the present invention, and FIG.
FIG. 6 is a schematic diagram of the remote monitoring and control system according to the present invention, and FIG. 7 is an explanatory diagram of the same operation. 2° is a switch monitoring terminal unit, 9 is a selector switch terminal, 20 is a terminal case, 22 is an operating handle, Sl-S4 is an operating switch, and LDa and LDb are light emitting diodes.

Claims (2)

[Claims] (1) Light-emitting diodes for operation display are arranged in the upper part of the terminal case, operation handles for operation switches are arranged in the lower part, and function settings such as address setting and type setting are made in the center of the terminal case. A switch monitoring terminal unit characterized by being provided with an optical wireless receiving section. (2) A selector switch terminal device, characterized in that a plurality of the above switch monitoring terminal units are arranged in a row on a mounting frame.