SU1494244A1 - Device for group check of matrix connectors - Google Patents

Abstract

This invention relates to instrumentation technology. The purpose of the invention is to increase the productivity of control by providing simultaneous testing of M matrix connectors. The device contains rc 1 current pulses, rr 2 clock pulses, counter 4, switch 8, M matrix connectors 10.1 ... 10.M, measuring unit 11.1 and display unit 12. A timer 3, a shift register 5, two elements And 6.7, a switch 9 and an M-1 of additional measurement units 11 are entered into the device for reaching the target. The proposed device alternately switches the switching points in the M controlled matrix connectors and simultaneously measures the resistance of the reed switches in them. If the reed switch does not work in any matrix 10.J (J = 1, M), then the measuring unit 11.J gives the signal "Marriage", stop r-2, and block 12 captures the readings of the counter 4. 1 Il.

Description

The invention relates to instrumentation, is intended to control the matrix connectors ferride (MSF) for reliability in their mass production.

The purpose of the invention is to increase the performance of the control by providing simultaneous verification of M mat measurement. If a logic O is written in one of the M bits of shift register 5, then signal 1 is input to the input of current pulse generator 1 from the inverse output of the second element And 7, and signal logic 1 is sent to the third input of shift register 5 from direct output by which the formation of richenny connectors is allowed. , θ

The drawing shows a structural electrical diagram of a device for group control of matrix connectors.

The device for group monitoring of 15 matrix connectors contains a current pulse generator 1, a clock pulse generator 2, a timer 3, a counter 4, a shift register 5, the first and second elements 6 and 7, a commutator 20 mutator 8, a switch 9 (matrix selection ), M matrix connectors

10.1 ... 10. М, М blocks 11. 1 ... 11. М measurements and indication block 12.

A device for group control matrix connectors works as follows.

Consider the operation of the device during group monitoring of matrix connectors (KxL), where K is the number of vertical lines of 30 MSF; L is the number of contours of the MSF.

In the initial state, the code of the starting point of switching is recorded in the counter, in the shift register 5 is the code in which all the bits have a value of ₃₃ log.1, the counters of the timer 3 are reset, all the reed switches of the MSF 10.1 ... 10.M are open. At the same time, the third input of the shift register 5 and the input of the clock generator 2 from the direct output dd of the second element And 7 and the output of the first element 6, respectively, receive a signal log.1, which allows recording in the shift register 5 and the formation of the next clock pulse.

The next clock pulse from the generator 2 clock pulses arriving at the second input of the shift register 5, writes in its zero bit log.0, and in the rest - log. The same pulse of generator 2 starts the M + 1-th channel of timer 3, tuned to a time interval equal to the period of switching on of switching points in one MSF. The clock pulses are supplied to the counter 4, which counts these pulses and controls the switch 8 and blocks 11.1 ... 11. M of the current pulse and the right shift of the code in register 5. The code recorded in the shift register 5 controls the matrix selection switch 9. Log.0 at the output of the I-th category of shift register 5 allows the passage of the current pulse to only one of the monitored MSF 10.1 (I = 1, M). The current pulse along the corresponding power circuits includes in one of the selected MSF 10.1 one of the switching points, the coordinate of which is determined by the contents of counter 4. All reed switches related to this switching point must be closed, and all reed switches belonging to 25 other switching points of the selected MSF 10.1 must open. In this case, a logical pulse is issued to the second output of the generator 1, the slice of which corresponds to the end of the current pulse when it passes through the power circuits of the MSF. A slice of a logical pulse is fed to the first input of register 5 and produces a right shift of the number in shift register 5. A positive front at the output of the 1st discharge (I = 1, M) of shift register 5 starts the 1st channel of timer 3, tuned to the maximum allowable response time of the reed switches in the MSF. The I-th digit of the first output of timer 3 generates a pulse, allowing the block 11.1 measurement to take measurements. The latter measures the resistances of all reed switches, and depending on the state of counter 4, the limits of measurement of the reed contact resistance are set to the resistance of the closed reed switch for the currently switched switching point and to the resistance of the open reed switch for all other switching points.

Thus, the proposed device turns on the switching points in M controlled MFs and measures the resistance of the reed switches in parallel. If in some matrix 10.1 (I = 1, M) the reed switch does not work or works after a time longer than 5

14942-) 4 of the pulse generated by the ί-th channel of timer 3, then the measurement unit 11.1 injects the signal Brack, stopping the clock generator 2, and the display unit 12 records the readings of counter 4, i.e. the number of the included switching point of the MSF, as well as the number of the 1st MSF 10.1. If the reed switches in all MSFs operate normally ι but then all the blocks 11.1 ... 11.M measurements give a Godden signal. After the M + 1-th channel of timer 3 forms the enable signal, the first And 6 element sends a signal 1 signal 1 to the input of the generator 2, by which the next clock pulse is generated. The clock generator 2 switches the counter 4 to the next position, and the monitoring cycle is repeated. ₂

Claims (1)

Claim A device for group monitoring of matrix connectors, comprising a series-connected current pulse generator 2 and a first switch, the output of which is an output for connecting the first input of a controlled matrix connector, connected in series with the main one; a measurement unit and an indication unit, wherein the first input of the main measurement unit is an input for connecting the output of a monitored matrix connector, a clock pulse generator and a counter connected in series to the second inputs of the first switch of the measurement unit and an indication unit, characterized in that, _z in order to enhance performance by providing control simultaneous verification M matrix connectors, it introduced M-1 additional measuring units, the first inputs of which are inputs for connecting the outputs of the respective controlled matrix connectors, and the second inputs are connected to the second input of the main measurement unit, a serially connected timer and the first AND element, the output of which is connected to the input of the clock generator, the output of which is connected to the first input of the timer, the second output of which is connected to the third inputs of the main and additional measurement units, the outputs of which are connected to the first input of the display unit and to the second input of the first element And, sequentially connected nennye shift register and a second AND gate, an inverse output of which is connected to the input current of the pulse generator, a second output of which is connected to a first input of a shift register, a second input coupled to an output of the clock, and the third input - to The direct ^and by direct output of the second AND gate , the second switch, the input of which is connected to the output of the shift register and the second timer input, and the output is the output for connecting the second inputs of the controlled matrix connectors, the output of the first switch being the output a house for connecting the first inputs of the M-1 additional controlled matrix connectors.