JPH054382Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a remote monitoring and control device that centrally monitors and controls various facilities such as railways and roads, and in particular, in the case of duplication of control consoles, etc. The present invention relates to a multi-point data switching circuit in a data output section.

(Prior Art) Conventionally, the data switching circuit in the individual data output section of this type of console for remote monitoring and control equipment generally includes an auxiliary relay circuit for transmitting switching conditions.
A mechanical latch relay circuit is used to save labor at the next stage, and the contacts are amplified to switch multi-point data.

FIG. 3 is a block diagram of a data switching circuit in an individual data output section of a conventional console for remote monitoring and control equipment. 1 is a manual switch,
It can be switched to either SW-1 (protection side) or SW-2 (active side). 2 switches switch 1
3 is a standby side auxiliary relay circuit that operates when the switch 1 is closed to the SW-1 side; 4 is a working side auxiliary relay circuit that operates when the switch 1 is closed to the SW-2 side;
The output contacts i1 to i10 are excited by the 1A to 10A relay operation of the auxiliary relay circuit 2 on the standby side, and are retained in the mechanical fluid even after the 1A to 10A relay is restored. 1B of relay circuit 3
The output contact is reversely excited by ~10B relay operation.
A latch relay circuit opens i1 to i10, and 5 represents a general switching relay group at the final stage. FIG. 4 shows an operation time chart of the data switching circuit of FIG. 3.

Next, the data switching operation of the conventional console for remote monitoring and control equipment will be explained with reference to FIGS. 3 and 4.
In Fig. 3, switch 1 is manually switched to the standby system side, that is,
When closed to the SW-1 side (for about 1 second), the 1A to 10A relays of the auxiliary relay circuit 2 are turned ON all at once as shown in Figure 4, and the I1 of the latch relay circuit 4 is turned on.
~Start the I10 relays at the same time. In this state, the output contacts i1 to i10 of the latch relay circuit are closed and output as a switching signal to the outside, and the final stage switching relay group 5 amplifies the required number of contacts and transfers all data from the working system to the backup system at once. Switch. After about 1 second,
When SW-1 of the switch 1 is restored, all of the 1A to 10A relays of the auxiliary relay circuit 2 are restored at the same time, but the latch relays I1 to I10 of the latch relay circuit 4 are mechanically maintained in an operating state. Next, close switch 1 to SW-2 side (approximately
1sec), 1B-10B of auxiliary relay circuit 3
The relays are turned ON all at once, and the relays I1 to I10 of the latch relay circuit 4 are reverse-excited, so that they all recover as shown in FIG.
In this state, the output contact i1 of the latch relay circuit 4
i10 is all open and the final stage switching relay group 5
The relays switch all at once from the standby system to the active system.

(Problems to be solved by the invention) The data switching circuit in the individual data output section of the conventional console for remote monitoring and control equipment described above draws a very large load current when the switching device 1 operates, even though it is instantaneous. It is clear that this type of data switching requires several thousand points in general. For this reason, it is necessary to mount a large-capacity power supply panel within the device for instantaneous switching, but this is a major drawback in terms of reliability, packaging density, cost, etc.

(Means for Solving the Problems) The multipoint data switching circuit of the present invention includes two sets each of a sequential circuit, a decoder, and a relay driver, as well as a clock generator and a reset circuit as a preceding functional section of an auxiliary relay circuit. , the load to be switched is distributed and the time difference switching is performed in units of small capacity loads.

(Examples) Next, examples of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a multi-point data switching circuit according to an embodiment of the present invention. Reference numeral 1 denotes a manual switch, which can be switched to either AW-1 or SW-2 as in FIG. 6 is a clock generator,
Reference numeral 7 denotes a standby system side sequential circuit for operating the standby system relay drivers in order, 8 a working system side sequential circuit for operating the working system relay drivers in order, and 9 a predetermined circuit for the decoder 14 or the decoder 15. At the point when the operation is completed, the sequential circuit 7 or 8
16 is a relay driver that drives the backup auxiliary relay circuit 10; 17 is a reset circuit that clears the
is a relay driver that drives the auxiliary relay circuit 11 of the active system. Note that the decoder 14 controls the backup relay driver 16, and the decoder 15 controls the active relay driver 17. The auxiliary relay circuit 10 on the standby system operates when the switch 1 is closed to the SW-1 side, and the auxiliary relay circuit 11 on the active system operates when the switch 1 is closed to the SW-1 side.
Operates when closed on the 2nd side. 12 is excited by the 1A to 10A relay operation of the backup side auxiliary relay circuit 10 to close the output contacts i1 to i10, and is mechanically held even after the 1A to 10A relay is restored. System side auxiliary relay circuit 11 1B
The output contact is reversely excited by ~10B relay operation.
A latch relay circuit opens i1 to i10, and 13 represents a final-stage working/standby general switching relay group. FIG. 2 shows a time chart of the circuit shown in FIG.

Next, the operation of the multi-point data switching circuit of the present invention will be explained with reference to FIGS. 1 and 2. In Figure 1, switch 1 is manually closed to SW-1 side (approximately 1 sec
time), a start signal is sequentially transmitted to the circuit 7, and the output of the decoder 14 is sequentially transmitted from 1 to 10 while being synchronized with the clock signal of the clock generator 6.
Controlled to output at 100ms intervals (matching the timing width of the clock pulse). Next, the relay driver 16 is driven in accordance with the order of the output signals of the decoder 14, and the 1A to 10A relays of the auxiliary relay circuit 10 operate as shown in FIG.
Furthermore, I1 of the latch relay circuit 12 is synchronized with the operating order of the 1A to 10A relays of the auxiliary relay circuit 10.
The ~I10 relay is energized during the 1A to 10A relay operating time and then held mechanically. As a result, the output contacts i1 to i10 of the latch relay circuit 12 are sequentially closed and output as a switching signal to the outside, and the final stage switching relay group 13 amplifies the required number of contacts and transfers all data from the working system to the standby system. The time difference is switched in units of I relays of the latch relay circuit 12. Here, the series of operations is completed by operating relays I1 to I10.

Next, similarly close the switch 1 to the SW-2 side (approximately
(for 1 sec), the sequential circuit 8, decoder 15, and relay driver 17 on the active side operate in the order shown in FIG. starts operating serially, and in accordance with that order, relays I1 to I10 of the latch relay circuit 12 start recovery operation, and I10
After the relay is restored, the decoder 15 sends out a reset condition, and the output of the reset circuit 9 sequentially resets the circuit 8, completing the operation. At this point, the switching relay group 13 completes the sequential switching operation from the backup system to the active system.

(Effects of the invention) As explained above, the present invention can be used as a multi-point data switching circuit in the individual data output section of a console for remote monitoring and control equipment, by distributing the load to be switched and performing time difference switching in small capacity load units. By doing so, the installed power supply panel can be made smaller and smaller in capacity, and there are effects such as being able to easily cope with an increase in the number of switching points.

[Brief explanation of drawings]

Fig. 1 is a multi-point data switching circuit diagram according to an embodiment of the present invention, Fig. 2 is a diagram showing a time chart of operation in the circuit of Fig. 1, Fig. 3 is a conventional data switching circuit diagram, and Fig. 4 3 is a diagram showing a time chart of the circuit of FIG. 3. FIG. 1... Switching device, 2, 3, 10, 11... Auxiliary relay circuit, 4, 12... Latch relay circuit, 5,
13...Switching relay group, 6...Clock generator,
7, 8...Sequential circuit, 9...Reset circuit, 1
4, 15... decoder, 16, 17... relay driver.

Claims (1)

[Scope of utility model registration request] In the data switching circuit in the individual data output section when duplicating the console for remote monitoring and control equipment, two sets each of sequential circuits, decoders, relay drivers, and a clock are installed before the auxiliary relay circuit that transmits the switching conditions. A multi-point data switching circuit characterized in that it is equipped with a generator and performs time difference switching in small capacity load units in synchronization with a clock pulse cycle.