SU1173543A1 - Switching arrangement - Google Patents

Abstract

A SWITCH containing a control unit, a preset unit, the first and second counting blocks connected to the outputs of the respective decoders, and the key block, characterized in that, in order to improve speed, demultiplexers, a multivibrator and indicators are introduced into it, first, second, third, and the fourth inputs of the control unit are connected respectively to the clock bus and the tires “Start, Reset and Reset Short-circuit, the first output of the control unit is connected to the counting input of the first counting unit and the gate inputs demulti lexors, the second inputs of which are connected to the outputs of the respective scaling units, and the outputs are connected to the first inputs of the corresponding keys of the key block, the second inputs of which are connected to the corresponding input buses, while the outputs of some keys are connected to the common key and the outputs of others through a multivibrator to the fifth input of the control unit, the sixth input of which is connected to the overflow output of the first and the counting input of the second conversion blocks, the seventh input is connected to the output of the second conversion block, The eighth input is connected to the output of the preset unit, and the second and third outputs of the control unit are connected to the installation i inputs of the respective scaling blocks, the first and second inputs of the pre block (L settings are connected to the Start and End tires, respectively, and the third input is connected to the output of the first conversion unit, while the outputs of the decoders are connected with the corresponding indicators. with cd with

Description

The invention relates to a pulse technique and can be applied to electrical connection monitoring devices.

Known switch containing the primary and secondary shift registers, amplifiers and key block 1.

The disadvantage of the device is low speed.

Closest to the invention is a matrix switch containing recalculated blocks connected to the corresponding decipher, a control block, a preset block, gating logic units and a block of switching elements 2.

A disadvantage of this device is also low speed.

The purpose of the invention is to increase speed.

The goal is achieved by introducing demultiplexers, multivibrator and indicators, first, second, third, and fourth inputs of the control unit to the switchboard that contains the control unit, preset unit, first and second counters, connected to the outputs of the corresponding descramblers, and the key block. respectively, with the clock bus and the "Start," Reset and "Reset short-circuit, the first output of the control unit is connected to the counting input of the first conversion unit and the gate inputs of the demultiplexers, the second inputs of the cat connected to the outputs of the respective scaling units, and the outputs are connected to the first inputs of the corresponding keys of the key block, the second inputs of which are connected to the corresponding input ports, while the outputs of some keys are connected to the common width, and the outputs of others through the multivibrator are connected to the fifth input of the control unit The input of which is connected to the overflow output of the first and counting input of the second recalculating unit, the seventh input is connected to the output of the second recalculating unit, the eighth input is connected to the output the preset unit, and the second and third outputs of the control unit are connected to the installation inputs of the respective scaling blocks, the first and second inputs of the preset block are connected to the Start and End keys, respectively, and the third input is connected to the output of the first scaling unit, while the descriptor outputs. connected with the corresponding indicators.

FIG. 1 shows a functional diagram of the device; in fig. 2 is a diagram of his work.

The functional diagram of the device contains a clock bar 1, bar Start 2, bar Reset 3, bar Reset CZ 4, control block 5, scaling blocks 6, 7, demultiplexers 8, 9, decoders 10, 11, bar Begin 12, bar "End 13, preset block 14, indicators 15, 16, key

block 17, consisting of keys 18-1 - 18-p, common bus 19, multivibrator 20 and input buses 21.

The switch works as follows.

From the clock bus 1, the sequence of clock pulses is fed to the input of the control block 5 and, if there is an enable permission from the start 2 recalculation blocks 6,

7 are set to the initial state, 0 and to the counting input of the counting unit b

sync starts to come. The same pulses go to the gate inputs of the demultiplexers 8, 9. The overflow pulse of the counting unit 6 is fed to the counting input of the counting unit 7 and to the input of the control unit 5. The signals from the information output of the counting unit 6 are fed to the inputs of the demultiplexer 8, to the inputs of the decipheror 10, and to the input of the preset unit 11, to the inputs of which

0 signals from the beginning of the bus, tires “End of the 13 ringing of contacts. The signals from the output of the preset block 14 are fed to the control block 5.

The signal from the information output of the scaling unit 7 is fed to the inputs of the de5 of the multiplexer 9, the control block 5 and the decipher 11, through which the signal goes to the indicator 15, and from the decryptor 10 respectively to the indicator 16. From the outputs of the demultiplexers 8, 9, the signals go to the keys 18 -one; 18-2, ..., 18-p and then

 to the multivibrator 20 and the common bus 19. The signal from the multivibrator 20 is a short circuit signal coming to the control unit 5, which stops the operation of the device, while the sync pulses do not pass to the scaling block 6. When there is a signal from the bus "Reset short-circuit 4 sync pulses again begin to arrive at the input of the counting unit 6 and the device continues to work again.

Switch operation is temporary

diagram (Fig. 2), where a special case is considered for three bit counters.

Bus 1 receives a sequence of clock pulses (Fig. 2, 1), which are input to the control unit 5.

5 At the moment of time t of start-up, a start-up impulse (Fig. 2.1) arrives on the bus 2, which sets the counting unit 6 and the counting unit 7 to the initial states. This start-up pulse enables the device to work, and from control unit 5 begin

0 receive clock pulses at the input of the counting unit 6.

From the multivibrator 20, a short-circuit signal (if such occurs) at time tjs.5. (Fig. 2) goes to control unit 5, which stops the operation of the device (no clock pulses are received).

8 this time, the operator can fix the numbers of short-circuited contacts, which are displayed on the indicators 15, 16.

At the moment of applying the short-circuit reset pulse (.3.c of bus 4, fig. 2), the sync pulses begin to arrive again at the input of counting unit 6, the switch continues its operation.

When the conversion unit 6 overflows, the overflow pulse at the time WP (Fig. 2) arrives at the control unit 5, which stops the arrival of the sync pulses. The same overflow impulse arrives at counting unit 7 and increases its state by one.

The conversion unit b is set to a state more than one of the conversion unit 7. This is accomplished by the setup pulse (Fig. 2), which is generated in control unit 6 after the overflow pulse arrives on it from the conversion unit 6. Now to the input of the conversion unit 6 re start coming

clock pulses, and the switch continues.

The overflow of counting unit 6 occurs periodically until the overflow of counting unit 7 overflows. The overflow pulse (Fig. 2) of the counting unit 7 is used to stop the operation of the switch, then all the contacts are checked.

Stopping the operation of the device can also be dried at any time by the operator (manually) or automatically at a predetermined time by the pulse generated in the preset unit 14.

Thus, the introduction of demultiplexers, multivibrator and indicators allows to increase the device speed (shortening the polling time) due to the possibility of selecting the beginning and end of polling, as well as speeding up the detection of a malfunction in its operation.

ZG

Claims (1)

A SWITCH containing a control unit, a preset, the first and second conversion units connected to the outputs of the corresponding decoders, and a key unit, characterized in that, in order to improve performance, demultiplexers, a multivibrator and indicators, the first, second, third and the fourth inputs of the control unit are connected respectively to the clock bus and the “Start”, “Reset” and “Reset KZ” buses, the first output of the control unit is connected to the counting input of the first conversion unit and the gate inputs of the demultiplex sorov, the second inputs of which are connected to the outputs of the corresponding conversion blocks, and the outputs are connected to the first inputs of the corresponding keys of the key block, the second inputs of which are connected to the corresponding input buses, while the outputs of some keys are connected to a common bus, and the outputs of others through a multivibrator are connected to the fifth the input of the control unit, the sixth input of which is connected to the overflow output of the first and the counting input of the second conversion blocks, the seventh input is connected to the output of the second conversion block, the eighth input d is connected to the output of the preset unit, and the second and third outputs of the control unit are connected to the installation g inputs of the corresponding conversion units ®, the first and second inputs of the preset unit are connected respectively to the “Start” and “End” buses, and the third input is connected to the output of the first conversion unit, while the outputs of the decoders are connected with the corresponding indicators. SU „L 173543