SU369709A1 - SWITCH FIRST STEP TWO-STEPS - Google Patents

Description

one

This invention relates to automatic control systems.

A first-stage switch of two-stage switching is known, comprising output channels, shift registers associated with horizontal and vertical buses, respectively, and switching relays, connected between vertical and horizontal buses.

The known device has insufficient speed.

In order to increase switching speed, the proposed device contains an additional shift register, the outputs of which are connected to even horizontal buses, odd horizontal buses are connected to another shift register, at the same time at least t switching relays, the first and t + 1 register cells are connected to each horizontal bus. the shift associated with the vertical tires are connected respectively to the inputs of the shift registers connected to the odd and even horizontal tires, and between the vertical tires, aznost between the numbers is equal to t, included capacitors.

FIG. 1 shows the relay control circuit of the proposed switch; in fig. 2 is a diagram of the connection of the relay contacts; in fig. 3 - scheme

switching on the first-stage switch to two-stage switching.

The first stage switchboard has output channels to which, via relays connected to the vertical and horizontal tires of the steering matrix, the sensor outputs are connected. The number of vertical tires must be at least 2t. The number of horizontal tires must be even.

In the proposed switch, the number of vertical tires is equal to Thu, i.e., eight, and the number of horizontal tires is four.

The switch consists of a relay / -16, horizontal shift register 17, vertical shift register 18 odd tires, vertical shift register 19 even buses, ferrite transistor cells 20 and 21 transfer, thyristors 22 vertical buses, pulse transformers 23, thyristors 24 odd horizontal tires , thyristors 25 even horizontal busbars, pulse transformers 26 and 27 horizontal busbars, resistances 28 and 29, determining thyristor holding current, diodes 30, quenching capacitors 31 connecting the tth vertical bus to (f + m), where is the number of output channels of the switch. The quenching capacitors 32 interconnect adjacent odd horizontal tires as well as the last odd tire with the first tire. The quenching capacitors 33 interconnect adjacent even horizontal tires and the last even horizontal bus from the second.

Horizontal tires and two groups of vertical tires (odd and even) form a two-story matrix. Relays 1-16, the windings of which are powered by horizontal and vertical busbars, are divided into diodes 30 through diodes 30, each with four relays. The first group is connected between the left vertical tires and the first horizontal tire, the second group is between the right vertical tires and the second horizontal tire, the third group is between the left vertical tires and the third horizontal tire, and so on. Diodes 30 exclude false circuits.

The signals from the sensors are connected to the contacts 34-49 (Fig. 2) of the relay / -16 and are output to the output of the first-stage switch on the four buses 50-53. Contacts are attached to spike 50. Pin 34 is a relay /, pin 35 is a relay 2, and so on.

The shift registers 17, 18, and 19 are highlighted, and the rest of the first-stage switch is shown as a square 54. The output buses 50-53 of all the first-stage switches are connected in parallel and connected to the inputs of four measuring amplifiers 55, which can be excluded from the circuit if the first the switching stage switches the signals of a sufficiently high level.

The outputs of the amplifiers or directly the output buses (50-53) are fed to the input of the switch 56 of the second stage, the output signal of the latter is fed to the input of the information receiver (for example, an analog-digital converter).

The operation of the switch is organized in such a way that at each time point there are four relays under voltage. Before the start of operation, the reset pulse applied to input 57 causes the horizontal shift register 17 and the vertical shift registers 18 and 19 to be reset, and the first ferrite transistor cells of these registers and the cell 21 are written down. Further, if measurements start with sensors connected to this switch, an initial setup is made, i.e., a series of four pulses is fed to input 58 of register 17.

The unit in the first cell is read and written to the second cell of register 17, then read and written to the third cell, and so on, up to the fifth cell. When each of the four cells is read, one of the thyristors 22 is switched on via pulse transformers 23.

At the end of the arrival of the four pulses, the four thyristors are turned on, and on the four left tires connected to them there is the potential of the instrument case. When reading the first cell, the unit recorded in the first cell of the register 19 is simultaneously read. Through the pulse transformer 26, the thyristor 24 of the first horizontal bus is turned on, which is under the negative potential -E. Relays 1-4 are turned on, while contacts 34-37 of these relays are closed. On the output bus signals from the first four sensors.

The operation of the switch begins with the arrival of the advancing pulse to the input 59, and the fifth thyristor 22 is turned on. Thanks to the capacitor 31, the first thyristor 22 is turned off. At the same time, the unit recorded in cell 21 is read, which gives a pulse to the input of register 19. The unit recorded in the first cell of this register is read. Register 19 includes the first tyrnstor 25, and the negative potential is on the second horizontal busbar. As a result of switching off the first vertical bus, the voltage is removed from the winding of the relay /, its contact 34 begins to open. Under voltage, the winding of the relay 5 appears. Its contact 38 starts to close.

Upon receipt of the following pulses at the input 59, the register / 7 produces switching on one of the following vertical busbars with simultaneous switching off of the tires connected to the switched tires by means of capacitors 31.

At the moment the last thyristor 22 is turned on, a unit is recorded in cell 20. The next propulsion impulse includes the first vertical bus, and the unit recorded in cell 20 is read, the latter gives a pulse to the input of the register 18, which includes the thyristor 24 of the third horizontal bus, on which a negative potential appears. A relay 9 is connected, connected to the first vertical and third horizontal tires. At the same time, the thyristor 24 of the first horizontal bus is disconnected using the capacitor 32.

The process described is repeated until the last relay (sixteenth) is turned on. Further operation of the scheme depends on

In addition, the switch works alone or there are still the same switches. In the first case, registers 18 and 19 loop back and after the sixteenth relay, the first one turns on, the process repeats.

In the second case, the propulsive impulse that pinches after the impulse that triggered the last relay, triggers the first relay of the next switch of the first stage and turns off the relay of this switch, which is switched on longer than the others turned on. The next pulse turns on the second relay and turns off another relay of this switch, all the relays of which are gradually turned off and are

in this state until the transfer begins from the previous switch of the first stage.

The sensor signals from the buses 50-53 arrive at the input of the switch 56 of the second stage, from where they are output to the input of the measuring device.

If the level of the signals on the tires 50-53 is insufficient, they are amplified by the measuring amplifiers 55.

Subject invention

The first-stage switch of two-stage switching, containing tons of output channels, shift registers associated with horizontal and vertical buses, respectively, switching relays switched on

between vertical and horizontal tires, characterized in that, in order to increase switching speed, it contains an additional shift register, the outputs of which are connected to even horizontal tires, odd horizontal tires are connected to a different shift register, at the same time not less than each t switching relays, the first and m + l cells of the shift register associated with vertical tires, are connected respectively to the inputs of the shift registers connected to odd and even horizontal th tire, wherein between the vertical rails, the difference between the numbers is equal to t, included capacitors.

About GTT1 fR

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369709