SU578628A1 - Arrangement for testing disconnected lines of electric circuitry - Google Patents

Description

one

The invention relates to radio engineering and can be used to control the quality of the electrical installation of various devices.

A device for controlling disconnected electrical circuits is known, comprising a measuring unit connected to a circuit consisting of a serially connected control unit, a photoreading unit, an addressing unit and a switch, the input of which is connected to the terminals of the test object and the output to the measuring unit.

A disadvantage of this device is the longer test time, since the monitored circuits are checked one by one.

The aim of the invention is to reduce the monitoring time.

To do this, a cycle switching unit, a total input block, X Y distribution units, and a single polling unit are inputted into the proposed device for monitoring disconnected electrical wiring circuits, the input: the DI switching unit is connected to the control unit, the inputs of which are connected to the distribution blocks by X and Y, the inputs of the X and Y distribution units are connected to the cycle switching unit, to the total inputs unit and the measuring unit, and the outputs to the inputs of the addressing unit, the other input of which is connected to the totalizer unit x inputs, the other input of the total input unit connected to the dispensing blocks for Y and a unit and the unit

the survey, one input of which is connected to the measuring unit, and the other two - to the distribution units in X and Y.

The drawing shows a diagram of the proposed device.

A device for controlling disconnected electrical wiring circuits contains an object 1 of control, switch 2, measuring unit 3, control unit 4, blocks 5 and 6 of X and Y distribution, respectively, block 7

unit polling, cycle switching unit 8, photo-reading unit 9, total input unit 10 and addressing unit 11, with the outputs of object 1 connected to the inputs of switch 2, the output of which is connected to the input

block 3, the outputs of the latter are connected to the first inputs of blocks 4-7, the second and third inputs of block 4 are connected to the first outputs of blocks 5 and 6, the second outputs of which are connected to the first and second inputs of the block

And, the third input of the latter is connected to the output of block 10, and the fourth to the output of block 9, connected by the input to the first output of block 4, the second output of which is connected to the input of block 8, the output of block 8 is connected to the second inputs of blocks 5, 6 and the first input

unit 10, the second input of which is connected to the output of block 7 and the third inputs of blocks 5 and 6, the second and third inputs of block 7 are connected to the third outputs of blocks 5 and 6, and the output of block 11 is connected with the second input of switch 2.

The device works as follows.

The testing of the disconnected circuits of the object 1 is carried out according to the program entered through the block 9, while in the switch 2 the disconnected circuits field is formed.

The test of disconnected circuits is started by a command coming into block 8 from block 4. In the first test cycle, block 8 issues a ban on block 5, permission to block b and permission to connect X coordinates to block 10. Block 10 issues a split in block 11 on all inputs of the X coordinate. Block 6 issues a resolution on the first input of the Y coordinate. Block I issues a command to the switch 2 to select actuating relays with coordinates Е X - from 1 to n (l is the matrix size of the switch 2 on the X coordinate). Executive relays switch the corresponding inputs of switch 2 to another measuring bus. The measuring unit 3 checks the insulation parameters between the measuring resistors of the switch 2 and issues a signal "Norm to block 6, which gives the resolution on the second input of the Y coordinate, etc." The cycle ends when the block 6 gives the resolution on the t-y the input of the coordinate Y (t is the size of the matrix of the switch 2 along the coordinate Y). The subsequent signal "Norm from the measuring unit 3 together with the resolution on the t input coordinate" In block 6, in block 4, it forms a cycle switching command, which, entering block 8, switches on the second test cycle. Block 8 prohibits the operation of block 6, the resolution for the operation of block 5 to the resolution to connect the Y coordinate to block 10. Block 10 gives the AND resolution on all inputs of the Y coordinate, and block 5 issues the resolution on the first input of the X coordinate. Next performed in the same way as the first cycle test. The “Norm” signal together with the resolution on the n-th input of the X coordinate of the block 5 forms in the block 4 the command “End of the check.

If during the test, for example, in the first cycle, the measuring unit 3 determines the underestimated value of the insulation parameters of the object 1, then the signal "There is no norm from block 3 gives the resolution to the operation of block 7, which prohibits the formation of total inputs on X into the block 10, the resolution on the operation of block 5, fixes the position of block 6 (coordinate Y,). Block 5 issues a resolution - at the first input of the X coordinate. Block 11 issues a command to the switch 2 to select an actuating relay with coordinates, Yi. The “Norm” signal from block 3 arriving at block 5 gives a resolution on the second input of the X coordinate, etc. to X n, after which the subsequent signal “Norm turns off block 7 and then the check on the first cycle continues, as indicated above. If in the process of a single poll the signal “The norm from block 3 does not arrive, then the point of the object 1 with coordinates Xi, Yi, (Хг-

the coordinate at which a single poll was interrupted) has underestimated isolation parameters. The continuation of a single poll is carried out by a forced signal "Norm. If in the process of checking the second cycle, unit 3 generates a signal “There is no norm, then unit 7 operates in the same way.

Thus, the use of the cycle switching unit 8, the total input unit 10, the X distribution unit 5 and the unit

6, the U distribution allows group verification of disconnected circuits, and the use of single polling unit 7 eliminates potential failures during testing, speeds up and facilitates troubleshooting.

This makes it possible to reduce the time for checking the isolation parameters of disconnected circuits by about 5–; 10 times, depending on the number of disconnected circuits of the object 1 of the control.

Claims (1)

Invention Formula A device for monitoring disconnected electrical circuits comprising a measuring unit connected to a circuit consisting of a serially connected control unit, a photoreading unit, an addressing unit and a switch, whose input is connected to the terminals of the control object, and the output to a measuring unit different from that, in order to reduce the monitoring time, a cycle switching block, a block of total inputs, X E Y distribution units, as well as a single polling unit, the input of the cycle switching unit is connected to a control unit, whose inputs are connected to X and Y distribution units, the inputs of X and Y distribution units are connected to the cycle switching unit, to the total the inputs and the measuring unit, and the outputs to the inputs of the addressing unit, the other input of which is connected to the block of total inputs, the other input of the total input block is connected to the X and Y distribution blocks and to the single polling unit, one input of which is connected to the measuring unit, and the other two to the X and Y distribution blocks. Information sources, taken into account during the examination 1. USSR author's certificate No. 240336, cl. G 01 R 31/12, 10/18/67.