SU411532A1 - - Google Patents

Description

one

This invention relates to switching equipment.

Switching devices are known, comprising relay elements, isolation diodes, a switched circuit state analyzer, and a software control unit with a group of relay contacts at each switch output.

To simplify and increase the reliability of the proposed device, each switch output is connected with the opening contact of the first pair of relays of this output through the diode to the first spike of the analyzer, using the closing contact of the same pair of relays along the same circuit through the second contacts of the second relay of the previous outputs to the second bus of the analyzer , and on another circuit through the break contacts of the second pairs of relays of the subsequent outputs - with the input of the indicator inserted into the device, the output of which is connected to the input of the control unit. The closing contacts of the second pair of relays of all outputs of the device are connected to the third width of the analyzer.

The drawing is a schematic diagram of the device being overlaid.

In accordance with a harness check program recorded on a program carrier, for example, a paper tape, the program unit PU generates control signals for triggering the corresponding relays PI, PZ ... f (H-i); / n- The signal of the analyzer AN on the signal of the software device to the bus A is tested (voltage), which through the opening contacts is a sling ЗРз, ЗЗЗ 3 / (n-2 ЗР (n-1 -Р (н + 2)) to enter the indicator I (for example, to the winding of the relay serving as an indicator). The latter triggers a continuation permission signal to the software device of the NR. By this signal, the software sends a control signal to the winding of relay P, which is activated and self-blocked by the 5Pi contact to the power source E through the disconnecting switch. konta CT P (ii +). At the same time, the relay Pi switches contacts IPi and 2f 1 (first run) in the output circuit B and contacts SPi and Pi. If the gap A is broken, the test signal from the indicator input I disappears.

From the output of the indicator, the signal is also removed, as the indicator returns to the initial state. The disappearance of a signal at the input of the software of the NPS device is a signal to allow the operation to continue.

On the signal of the software device, the voltage of the test is removed from the A parameter of the analyzer AH and fed to the C bar. The signal from the C cable is made via the 4Pi closing contact, the breaking contacts, ZRZ ... W3 (n-2),

ZR (n-1), P (11 + 2) is fed to the input inaikator

And, which re-triggers. From its output, the output signal of the program device and the input signal is. iio this signal break contact P (and + 2) is triggered - opens. The software unit of the power unit gives a control signal to the winding of the relay PZ, which is triggered and self-blocked by the closing Coptak 101; and a separate power source E through the break contact P (s + 1).

At one time, the PZ relay switches the breaker 2Pz and the shorting IP contacts in the I3z output circuit, the short-circuiting oPz and the short-circuit 4p2 contacts. In this case, the signal is tested from Cc through the closing co-tacts and IPz, the output BZ, the tested circuit nU.i, the output BI and the closing contact IPi are fed to bus A (input A of the analyzer AH). When a test is sent to njnny C, and to patch L, this signal comes through the ir-b output contact B, the PC1 circuit to be checked, the BZ output, and the Pz and 4Pi closing switches come on line C. After that, the test signal (low voltage ) is removed and a high-voltage test signal (e.g., 500 L) is iodized on the spike A (or C). This signal is given if the lILd chain is corrected - interrupted, interrupted, and closed.

The analyzer AN measures the insulated resistance of the riLd circuit under test from all other tested riLlz circuits connected to the outputs of the Ar ...

6 (H-1 NP after testing the tested circuit nn, i from the analyzer AH) through the breaking coitact 1P (n, + h) to the input of the program of the PU device, a signal is received to test the circuit of the nuclear circuit. C) and P (c. + 2) - B software device relays I (n + 1) is triggered, and relays (i-r2) are released. Previously activated relays P and PZ de-energize their lPi 5Pi contacts and return to their original state After a predetermined time, the opening contact P (n + 1) returns to its original state (the relay releases). The circuit is ready for connection any other chain.

The connection of the branched chain UUz is carried out in parts (links). First, for example, a circuit is connected between the terminals (outputs) BRS n - the first one and this part of the Y / YZ is disconnected for an open circuit and a short to the case, and then the second link is connected to the test - the circuit between the terminals S {ni) and Вц.

During the supply of a control signal to the winding of the relay, the relay switches open 1Pmc + 3) and closes 2 / (n + 3) switches. In the software device PU, the relay P (-E + C) is triggered. After the end of the test of the last star of the circuit, nUz, the Lee analyzer is sent through the closing contact 2P (H-f3) to the software device PU. According to this signal, the software device issues a control signal to the relay winding, which is triggered, blocks itself to a separate power source E via the open contact P (u + i) and performs the described switching of the contacts. After some time, the closing 2Y (n + h)

and the opening 1P (n + 3) contacts return to their initial state (the relay is de-energized). After that, a high voltage signal is sent from the analyzer to the signal of the PU software device from the analyzer;

opening contacts 3Pi and 3Pz, closing contact Рз and output Vz enters the tested circuit nilz, from where one circuit through the output of the first closing 1P (W-1), opening ZR (11-2) and closing 4Rz contacts,

as well as through another circuit through the output BC, the closing switches 1 YN and 4P () are fed to the bus C. After measuring the insulation resistance from the analyzer to the software device through the opening contact 1 / - (low frequency)

a signal is received, by which the previously worked elements return to the initial state. The circuit operation cycle is repeated.

Subject invention

A switching device containing relay elements, isolation diodes, a switched circuit analyzer and a software control unit with a group of relay contacts at each switch output, characterized in that, in order to simplify and increase reliability, each switch output is connected output

through the diode with the first width of the analyzer, with the help of the closing contact of the same pair of relays in one circuit through the disconnect switches of the second pair of relays of previous outputs - with the second bus of the analyzer, and

another circuit through the disconnecting contacts of the second pair of relays of the subsequent outputs — with the input of an indicator inserted into the device, the output of which is connected to the input of the control unit, and the closing contacts of the second pair of relays of all outputs of the device are connected to the third thickness of the analyzer.