SU842838A1 - Wiring testing device - Google Patents

Description

(54) DEVICE FOR INSTALLATION CHECKS

The invention relates to automation and computer technology and is used to automatically check the inter-connector wiring of various electronic devices.

Arrangements for automatic installation checking are known, comprising a register whose outputs are connected to a group of inputs of an output unit, a pulse generator, an analysis unit, first and second decoders, as well as first and second counters and an output control unit, with the output of the pulse generator connected to the counting input of the first the counter, the outputs of which are connected to the first groups of inputs of the register and the first decoder, the second group of inputs of the first decoder is connected to the pitch 1 of the second counter, the second group of inputs of the register and The first decoder outputs are connected to the device output group and the first group of inputs of the second and third groups of inputs of which are connected respectively to the device input group and output of the second decoder, the outputs of the analysis unit are connected to the input of the first counter and to the input output control unit, the outputs of which are connected to the control inputs of the register, pulse generator and output unit, and the counting input counter. connected to the trigger output of the first counter

In these devices with strict

0 a sequence of monitored points of the motif, specified by the first counter, if there is a connection between the monitored point and another point, this is fixed;

5 connections and a polling point. In this case, the fixation of control results is performed in the sequence of addresses indicated in the table of compounds, which increases the time and complicates the processing of results. The lack of operational control of the operation of the first decoder and the analysis unit as the most complex nodes of the device in the event of their failure leads to incorrect results of testing the product.

Closest to the proposed technical entity is a device for testing installation.

containing the register, the outputs of which are connected to a group of inputs of the output unit, a pulse generator, an analysis unit, a matrix decoder, a decoder for the Y coordinates, X and Y coordinate counters and a control unit for the drive, and the input of the 4P pulses generator is connected to the counting input of the X coordinate counter, group of outputs which is connected to the first groups of inputs of the register and the master decoder, the second group of inputs of which is connected to the input group of the decoder of the coordinate Y, the group of outputs of the matrix decoder is connected to the output group the device and the first group of inputs of the analysis unit, the second and third groups of inputs of which are connected respectively to the input group of the device and the output group of the decoder coordinates Y, the outputs of the output control unit are connected respectively to the control inputs of the register, pulse generator and output unit, and the counting input of the coordinate counter U is connected to the lowering output of the counter of the X coordinate, as well as three comparison circuits, the OR element, three AND elements and the NOT element, the output of which is connected to the first input of the first element AND the second the stroke of which is connected to the output of the first comparison circuit, the output of the analysis unit is connected to the input of the element NOT and to the first inputs of the second and third elements AND the second inputs of which are connected respectively to the outputs of the second and Third comparison circuits, the outputs of the first and third elements AND are connected to the corresponding inputs of the element OR, the output of which is connected to the control input of the output control, and the output of the second element AND is connected to the blanking input of the counter of the X coordinate, the first and second groups of inputs of the comparison circuits are connected respectively Respectively to the first and second groups of inputs of the register 2.

The disadvantage of this device is the large amount of equipment required to generate signals, the X coordinate is equal to the Y coordinate, the X coordinate is less than the Y coordinate and the X coordinate is larger than the Y coordinate, which reduces reliability and increases the cost of the device.

The purpose of the invention is to reduce the hardware output.

The goal is achieved by the fact that in the device containing the output unit, connected by the first input to the output of the register / and the second input to the first output of the output control unit, the second and third outputs of which are connected

respectively, to the first input of the register and the input of the pulse generator and the input to the output of the element OR, the coordinate counter X, connected by the first input and output respectively to the output of the pulse generator and the input of the counter of the coordinate y, the second output - to the first inputs of the matrix decoder and the comparison circuit and the second the input of the register, and the second input with the output of the first element I, the decoder of the coordinate Y connected with the input with the output of the counter of the coordinate Y, the third input of the register and the second inputs of the comparison circuit and the matrix decoder ora, the output connected to the output of the device and the first input of the analysis unit, the second and. the third inputs of which are connected respectively to the input of the device and the output of the decoder of the coordinate Y, and the output to the first inputs of the first and second elements AND and through the element NOT to the first input of the third element AND, the second input connected to the comparison output, and the output to the first input OR, the second input of which is connected to the output of the second element I, the node comparing the coordinate values including the trigger, the additional element NOT and the additional element AND, the first input of the trigger connected to the output of the counter of the X coordinate the first output - with the second input of the first element And; the second input - with the output of the comparison circuit and through the additional element NOT with the first input of the additional element And, the second input of which and the output under-. Switched respectively to the second output of the trigger and the second input of the second element I.

The drawing shows a block diagram of a device comprising an output block 1, a register 2, a pulse generator 3, an output control block 4, a counter 5 coordinates X, a counter b coordinates y, a matrix decoder 7, a decoder 8 coordinates Y, a comparison circuit 9, node 10 comparison of coordinate values, including a trigger 11, additional elements NOT 12 and 13, test item 14, block 15 analysis, element 16, first, third and second elements AND 17, 18, 19, element OR 20. The device works as follows .

After switching on the device from the output of the generator 3 to the input of the counter 5, the starting frequency arrives. Overflow signals of the output of the counter 5 follow to the input of the counter 6. The changing codes of the addresses of the coordinates X and Y from the outputs of the counters 5 and b are fed to the inputs of the register- 1 matrix decoder 7, circuits 9

comparison, and the address code of the coordinate Y from the output of the counter b is fed to the input of the decoder 8.

If the address codes X and Y are equal on the counters 5 and 6, the comparison circuit 9 generates a signal, the X coordinate is equal to the Y coordinate. This signal sets the trigger 11 to the state of unity and enters the input of the HE element 12. When the code recorded on the counter 5 is increased, the AND element 13 according to the coincidence of the signals from the output of the logical unit of the trigger 11 and the element NOT 12 forms the signal of the X coordinate, the large Y coordinates.

The overflow signal of the counter 1ka 5 sets the trigger 11 to the 5th state zero, thus forming the signal of the coordinate X less than the coordinate Y.

If there is a connection in the tested item 14 at the address determined by the matrix decoder 7 and decoder 8, the output of block 15 generates a signal that goes to the inputs of the elements 17,19 and the element NOT 16. The signal from the output of the element 16 goes to the input of the element And 18. When the signals from the outputs of block 15 and element 13 coincide, the element And 19 forms a signal that follows the input of the element OR 20. When the signals from the output of block 15 and the output of the trigger 11 coincide, the element And 17. forms a signal that the blanking with Electric 5 and arriving at od 6. counter. With the coincidence of the signals from the output of the element NOT 16 and the circuit 9 of the comparison. Element I 18 generates a signal that arrives at element OR 20, a supra signal to block 4, which stops the generator 3 for the time it takes to fix the connection addresses on register 2, when the address code of the X coordinate is greater or higher than the address code of the Y coordinate, and in block 1, the coordinates of the given connection are fixed on the register re 2. Then block 4 to continue the operation of the device starts the generator 3.

Thus, this device with a smaller amount of equipment performs the function of checking the installation, increasing its reliability and reducing the cost.

Claims (2)

1. USSR author's certificate 525963, cl. G 06 F 15/46, 1976. 55 2. USSR author's certificate in application 2617227 / 18-24, cl. G 06 F 15/46 ,. 1978 (prototype).