SU1141986A1 - Device for checking communication matrices - Google Patents

Abstract

1. DEVICE FOR THE MOTHERPHELLER NUCLEAR SWITCH, containing a control switchboard, a result block, a display unit, a clock generator, a clock counter, a power circuit control counter, a current pulse generator, the control input of which is connected to the clock pulse output, distinguishing with the fact that, in order to increase the control efficiency by simultaneously monitoring all the contacts of the matrix1, the control blocks of the closed and open state of the contacts are entered, the control blocks of the open The contacts are turned off, the resulting inputs of which are connected respectively to the inputs and outputs of the checked switching matrix, and the input measuring resistances are included between the outputs of the switching matrix and the common bus. The control counter of the power circuits is designed as a row control counter and control counter by columns, which are controlled by pulses of the counter of clock pulses, the switch of control circuits is made in the form of a switch of rows, the inputs of which are connected to the outputs of the counter control Lines in rows and on-switch columns, whose inputs are connected to the outputs of the control counter by columns, the outputs of the current pulse generator are connected to the corresponding inputs of the row and column switches, the outputs of which are connected respectively to the control matrix, the outputs of the control counter by columns are connected to the control inputs of the control - blocks of the closed and open state of the contacts and to the display unit, the outputs of the counter i control in rows are connected to the control inputs of the control blocks (L k the whip state of the contacts and to the display unit, the resultant C block is made in the form of a block for adding short-term contact signals and a block for adding signals to the closed and open state of contacts, a reading block and an And element, one of the inputs of which is connected to the output of the adding block QD 00 ) signals of short-time operation of contacts, inputs connected to the outputs of the control of incorrectly closed contacts, control blocks of the closed and open state of the contacts and with the display unit, re ultiruyuschie outputs control blocks closed and open state of the contacts and the resulting output of the control blocks the open state of the contacts are connected to the inputs of unit signals combining closed and open state of the contacts and a display unit, the generator output

Description

clock pulses through the element And the resulting block is connected to the input of the counter of clock pulses, the corresponding output of which is connected to the second input of the reading block of the result block,

2. The device of claim 1, wherein the control unit of a closed and open contact state comprises a series-connected comparator of a closed state of contacts and a first logic unit, as well as serially-connected contacts open comparator and a second logic unit , the comparator output of the open state of the contacts is connected to the second input of the first logic unit, the combined inputs of both comparators, the combined third input of the first logic unit and the second input of the second of the hinge logic block and the outputs of the first and second logic blocks are respectively the resultant and controlled inputs, the resultant output and the output of the control of incorrectly closed contacts of the control unit of the closed and open state of the contacts.

3. The device of claim 1, wherein the control unit of the open state of the contacts comprises a series-connected comparator and a logic unit, the input of the comparator and the second input of the logic unit, as well as the output of the logic unit, are respectively the resultant and controllable inputs by the resultant output of the control block of the open state of the contacts.

one

The invention relates to telecommunications engineering and can be used in devices for the supervision, control and testing of all types of connectors, including connectors for automatic and semi-automatic telephone exchanges.

The purpose of the invention is to increase the control efficiency by simultaneously monitoring all the contacts of the matrix.

Fig. 1 shows a structural electrical circuit of the proposed device; Fig. 2 is a diagram of the control unit of the closed and open state of the contacts.

The device for checking the switching matrices contains (FIG. 1) 1 clock pulses, control blocks of a closed and open contact, control blocks 3 of the open state of contacts, a 4-clock pulse counter, a power control counter 5 consisting of a counter 6 controls in rows and counter 7 controls in columns, generator 8 current pulses, switch 9 control circuits consisting of a switch 10 lines and switch 1 1 columns, block 12 indies

the resultant unit 13, consisting of the element I 14, the reading unit 15, the unit 16, the accumulation of signals for short-term contact operation and the unit 17 for the addition of signals of the closed and open state of the contacts, the measuring resistances 18,

In addition, the switching m-matrix 19 consists of a control matrix 20 and a contact matrix 21.

The control unit 2 of the closed and open state of the contacts contains (FIG. 2) the comparators 22 and 23 of the closed and open state of the contacts, the first and second logical blocks 24, 25.

The control unit 3 of the open state of the contacts contains (FIG. 3) a comparator 26 and a logic unit 27.

The device works as follows.

The pulses of the oscillator 1 of the clock pulses (Fig. 1) with the enabling signal coming from the resulting block 13 through the element 14 are fed into the counter 4 clock pulses and from it to the counter 5 of the control, lazy power circuits. Counter 5 counters 6 and 7

3

The state of the switch is 10 lines and the switch 11 is columns of the switch 9, through which the control signals produced by the current pulse generator 8 are fed to the windings of the control matrix 20 of the switching matrix 19. The current pulse generator 8 is synchronized with a 4 clock pulse counter.

The control units 2 and 3 provide simultaneous information on the state of the contacts in the matrix of 21 contacts. The control unit 2 controls the closed and open state of the contacts and has the resulting and controlled inputs. The resulting input receives information about the state of the checked contact of the contact matrix 21 from the contact input side, the control input sends a command signal closing and opening from the counter 5 control of power circuits synchronously with the flow of control of the generator 8 current pulses and switch 10 lines. The resulting output of the control unit 2 receives information about the correctness of the closing and opening of the contacts in the matrix of 21 contacts, and the output of the control of incorrectly closed contacts - information about the absence of incorrectly closed contacts (including short-term ones) in the switching matrix 19.

The control unit 2 (FIG. 2) consists of two comparators 22 and 23, one of which controls the closed state of the contacts, and the other open and two logical blocks 24 and 25, which are constructed in such a way that, in the case of the correct operation of the monitored contacts at the outputs of the control unit 2, there is always a voltage of logic 1. In the case of incorrect operation, the output of the control unit 2 occurs: the voltage of the logic o.

The control unit 3 (Fig. 3) controls the open state of the contacts and has a resultant and controllable input. The resultant input receives information about the state of the contacts being checked from the contact output side, the control input receives a command signal for closing and opening from the counter 5 of the control of the synchronous power circuits

1986 but with the flow of control of the generator 8 current pulses and the switch 11 columns. The control unit 3 has a resultant output, which receives information about the correctness of the opening of the contacts in the matrix of contacts. The control unit 3 consists of a comparator 26, which con t-.

0 rotates the open state of the contacts, and the logic unit 27 constructed in such a way that, in the case of the correct operation of the monitored contacts, the resulting output of the control unit 3 always has a voltage of logical 1. In the event of an incorrect operation, on. the resulting output of the control unit 3 occurs logical O.

From the resulting outputs of the control units 2 and 3, information on the correctness of the closing and opening of the contacts is fed to the inputs of the blocks 16 and

5 17 of the resulting block 13. From the output of block 17, information arrives on. the input of the reading unit 15 and when it receives / gives a read pulse coming from the 4-clock counter to its other input, information

0 on the state of the switching matrix 19 is transmitted to the element AND 14. The read pulses arrive at the input of the reading unit 15 after 10 ms after the end of the closure and opening

 contacts. From the output of block 16, information on the absence of incorrectly closed contacts is continuously supplied to another input of element 14. In the case of correct operation of contacts on all

The 0 inputs of blocks 16 and 17 have a voltage of logical 1 and at their outputs a permitting signal for the passage of pulses of a clock pulse generator 1 is constantly located.

five

In the event that one or several contacts of the matrix 19 malfunction, switching on one or several inputs of blocks 16 and 17, a logical O voltage appears,

0 and the enabling signal to the input of the AND element 14 is not received, and the display unit 12 displays the status of all contacts of the switching matrix 19 and the nature of the error.

5 A typical switching matrix 19 on reed switches used in telephony may contain 64 intersection points, each of which has 5P with several (usually two or four; reed contact). Each intersection point also contains a magnetic core with a hysteresis square. Reed contacts of each intersection point they are turned on when a current pulse passes simultaneously through two windings corresponding to its vertical and horizontal coordinates. The contacts are held in a closed state due to residual magnetism. Contacts are made when current is passed through one winding. The operation of such switching matrices is carried out by a current pulse generator 8. When control signals are applied simultaneously in line and column, the corresponding switching point is triggered. When the control signal is applied, only 66 lines break the switching points coil contact resistance is carried out simultaneously on all inputs and outputs of the switching matrix 19, for which all of its inputs and outputs are permanently connected ontrolnye blocks 2 and 3. In a known method of state of the contact can be judged by the voltage at the controlled contact at a known to.ke through contact, i.e. at the input contact voltage. With the introduction of measuring resistance 18 between the output of the contact of the switching matrix 19 and the common bus, the state of the jjoH contact can be judged by the voltage both at the input and at the output of this contact. FIELD

22

21

2

- / 7

23

pendant

25

-75

2

fig.Z

Claims (3)

1. DEVICE FOR CHECKING MATRIX-COMMUTATION, containing comm- ^; tator of control circuits, resultant block, indication block, clock pulse generator, clock pulse counter, power circuit control counter, current pulse generator, the control input of which is connected to the output of the clock pulse counter, different in that, in order to increase the efficiency monitoring by simultaneous monitoring of all matrix contacts, control blocks of the closed and open state of the contacts, control blocks of the open state of the contacts, the resulting inputs of which are connected respectively, with the inputs and outputs of the tested switching matrix, and the entered measuring resistances are included between the outputs of the switching matrix and the common bus., the power circuit control counter is made in the form of a line control counter and a column control counter that are controlled by pulses of the clock pulse counter, circuit switch the control is made in the form of a row switch, the inputs of which are connected to the outputs of the row control counter and · a column switch, whose inputs are connected to the outputs column control counter, current pulse generator outputs are connected to the corresponding inputs of row and column switches, the outputs of which are connected respectively to the control matrix, column counter outputs are connected to the controlled inputs of the control blocks of the closed and open state of the contacts and to the display unit, the outputs of the control counter connected in rows to the controlled inputs of the control blocks of the open state of the contacts and to the display unit, the resulting block is made in the form of addition of signals of short-term operation of contacts and a block of addition of signals of closed and open state of contacts, a reading block and element And, one of the inputs of which is connected to the output of the block of addition of signals of short-term operation of contacts, inputs connected to the outputs of control of incorrectly closed contacts, control blocks of closed and open the state of the contacts and with the display unit, the resulting outputs of the control blocks of the closed and open state of the contacts and the resulting e outputs the open state of the contacts of control units are connected to the inputs of summation block signaling closed and open state of the contacts and a display unit, the generator output »SU" 1141986 1> 41986 clock pulses through the AND element of the resulting block is connected to the input of the clock counter, the corresponding output of which is connected to the second input of the reading block of the resulting block. 2. The device according to p. ^ Characterized in that the control unit of the closed and open state of the contacts contains serially connected the comparator of the closed state of the contacts and the first logical unit, as well as the serially connected comparator of the open state of the contacts and the second logical unit, the output of the comparator of the open state of the contacts is connected to the second input of the first logical block, the combined inputs of both comparators, the combined third input of the first logical block and the second input of the second logic matic block and outputs the first and second logic blocks are respectively and the resulting control input, the resultant output and the output control incorrectly closed contacts of the control unit closed and open state of the contacts. 3. The device according to p. ^ Characterized in that the control unit of the open state of the contacts contains a comparator and a logical unit, the input of the comparator and the second input of the logical unit, as well as the output of the logical unit are the resulting and controlled by the inputs, the resulting output of the control unit of the open state of the contacts .