SU440803A1 - Relay Pulse Distributor - Google Patents

Description

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The invention relates to electrical devices for remote control and can be used in various electrical and radio devices designed to send control signals generated at different times over multiple channels, for example, in technical diagnostics devices, in control devices for controlling various technological parameters of controlled objects, in modern engineering , in irradiating devices, etc.

Multichannel relay pulse distributors are known, in which an electromagnetic relay with closing contacts is connected to each channel (cell).

However, such a pulse distributor cannot be used in devices that control a large number of objects, i.e., contain a large number of channels (several hundred or more), due to the fact that each channel has a large number of operating elements (relays, closing and blocking contacts, electrical circuits, etc.).

In addition, the known distributor does not provide current-free closure and opening of the contacts, which leads to sparking at the moment of switching on and off, burning of the contacts and leaving them out of order.

The purpose of the invention is to expand the functionality of the relay distributor.

This is achieved by the fact that a contact field of a multiple coordinate connector is inserted into the distributor, containing blocks of selecting and holding electromagnets controlled by triggers, and equipped with a power supply switching unit for vertical tires made on triggers, the first input of which is connected to the working contacts of all holding electromagnets, and the zero input of the last trigger - with a single output of the switching trigger of the holding electromagnets, while the zero inputs of the trigger the control of the selection and holding electromagnets are connected with the working contacts of the respective intermediate relays connected between each two selection and each two holding electromagnets, and the single inputs are connected with the power supply switching unit to vertical sections.

FIG. 1 is a block diagram of the proposed pulse distributor; in fig. 2 is a diagram of a power switching unit for vertical lines of a multiple coordinate connector; in fig. 3-control circuit of the holding electromagnets. The proposed pulse distributor contains a multiple coordinated connector (for example, type MKS 10X10X12), which includes a contact field 1, a block of 2 ten selectors and a block of 3 ten retaining electromagnets, a block of 4 intermediate relays installed between each two choosing electromagnets and excluding the possibility of simultaneous operation of two one after another working select electromagnets, block 5 intermediate relays installed between each two holding electromagnets and excluding the possibility simultaneous actuation of two successive electromagnets working one after another, and a block

6 thyristor keys, which ensure the inclusion of select electromagnets of unit 2

and intermediate relays of block 4 as well as block

7 thyristor switches, which ensure the switching on of the holding electromagnets of the block 3 and the intermediate relays of the block 5, the trigger 8, which ensures the switching of the selecting electromagnets and the trigger 9, which ensures the switching of the holding electromagnets. In addition, the pulse distributor contains a block 10, which ensures the switching of power to the vertical plugs of the multiple coordinate connector and a two-channel clock pulse generator (symmetrical multivibrator) 11.

Block 10 consists of twelve series-connected triggers (Fig. 2).

The coincidence circuit 12 ensures the triggering of the trigger 9 and the switching on of the next holding electromagnet of block 3 only at the moment of the end of the last twelfth pulse supplied through channel 13 through the contact group closed by the previous holding electromagnet of block 3, and at the moment of applying the next pulse through channel 14 of the multivibrator 11.

The coincidence circuit 15 provides triggered trigger 8 and switching on the next selecting electromagnet of block 2 only at the moment of the end of the last twelfth pulse supplied from block 10, and in the presence of a pulse (through channel 16), signaling the trigger of the last tenth holding electromagnet of block 3.

The distributor is switched on from the start node 17, connected by channel 18 with a block of 6 thyristor keys of selected electromagnets, channel 19 with a block of 7 thyristor keys of holding electromagnets, and channel 20 with a block of 10 switching power to vertical strings.

A single output of each trigger of block 10 () is connected by channels 21-23 to the same vertical ishnam of a multiple connector.

A single trigger input G is associated with the output of a coincidence circuit 24 and with the operating cohgact 25 of each holding electromagnet of block 3 (including the first one).

One input of the coincidence circuit 24 is connected to the start node 17 by channel 20, and the second input is connected to the working contact of the first holding electromagnet by channel 26.

The first held; electromagnet 27 of the block 3 is connected to the working contact 28 of each selecting electromagnet. The working contact 29 of the first holding electromagnet 27 is introduced into the first run-through circuit: the weft relay 30 of block 5, and the working contact 31 of the first intermediate relay 30 is inserted into the enable circuit of the second holding electromagnet 32.

The outputs of the trigger 9 are connected to the control electrodes of the thyristors of the unit 7. In addition, a single output of the trigger 9 is connected to the zero input of the trigger 712 (channel 33).

The output of the coincidence circuit 12 is connected to a single input of the trigger 9 and to the input of the coincidence circuit 15, to the second input of which a channel from the tenth holding electromagnet is connected via channel 16 and the zero input of the trigger 9 is connected to the working contact 34 of each intermediate relay of block 5 .

The pulse distributor operates as follows.

Turn on the power supply. Then, using the reset common button, all the triggers included in the control circuit are transferred to the zero state.

When the start node button 17 is pressed, signals are simultaneously turned on to turn on the first selecting electromagnet (via channel 18), to turn on the first holding electromagnet (via channel 19), to start the symmetric multivibrator 11, and to transfer the trigger TI of unit 10 to one state (but to channel 20).

First, the first selector electromagnet of block 2 is activated, which, by closing its working contact 28, activates the first holding electromagnet 27 of block 3. The operation of the first holding electromagnet 27 ensures the closure of all twelve contacts in the first contact group of the multiple connector, the closure of contact 29, and also a signal via channel 26 to the coincidence circuit 24. Circuit 24, having generated a pulse, ensures that the trigger TI is turned into a single state, i.e., block 10 begins its operation.

Symmetric multivibrator 11, when turned on, always sends the first impulse from the same arm (channel 14). When far away. In operation of the multivibrator 11 in the autogeneration mode, all twelveteen triggers () of block 10 are alternately triggered. Since the primary switching of the trigger T, and therefore all subsequent ones in the unit state, is possible only after the first holding electromagnet (i.e. contact closure in the first contact group of the ISS and after the arrival of the signal via channel 25 to the coincidence circuit 24), this ensures first the closure of the contacts of the contact group of the ISS and then switching them on in an electrical circuit that provides currentless operation of the contacts of the contact field of the ISS when they are closed. The signals from the single outputs are alternately fed to the strings of the same name at once in all verticals of the ISS. But since only the contacts of one contact group of the MKS are closed, these signals are distributed through the channels in exact correspondence with the number of the incoming pulse from the multivibrator 11 in block 10. At the time of the last trigger T and sending to the multivibrators 11 of the next pulse via channel 14, coincidence circuit 2, which sends an impulse that translates trigger 9 into a single state,

The trigger 9, having switched to the single state, switches the intermediate relay 30 of the block 5 through the closed contact 29 and switches off the trigger of the block 10 via the channel 33. The switched on thyristor key of the block 7 of the intermediate relay of the block 5 provides the thyristor of the block 7 of the first holding electromagnet, and therefore and turning off the first holding electromagnet of the block 3. Due to the considerable inertia of the holding electromagnet, the time of its turning off is much longer than the switching time of the trigger T. Therefore, at the beginning dit current interruption, and then opening of the contacts of the contact group ISS m. e. provided beetokovy contact mode a contact ISS floor nr their opening. The intermediate relay 30 closes contact 31 when it is triggered, and then contact 34, which again triggers trigger 9 to the zero state. Since contact 31 is closed at this moment, the second holding electromagnet 32 is turned on, and thus the contacts of the second contact group of the ISS are closed, unit 10 starts working again, etc. The intermediate relays of unit 5 exclude the possibility of simultaneously being in the on state holding electromagnets, despite the significant inertia of electromagnets and thyristor switches.

Each of the ten intermediate relays of the block 5 is in the on state only for the period necessary to close the contact 31, turn on the next holding electromagnet, and also to close the working contact 34 of the re-translating trigger 9 to the zero state.

The control circuit of the electromotor; the ppps are analogous to the control circuit of the holding by means of electromagnets, only the first selecting electromagnet of the unit 2 is connected to the power supply circuit not directly via the working contacts 28, but directly.

A signal that translates a switching trigger

8 selecting electromagnets of unit 2 in a single state and ensuring the switching on of the next selecting electromagnet of unit 2. comes from the coincidence circuit 15, which is triggered when there is a signal from

the tenth holding electromagnet switched on via channel 16 and only at the moment of the last twelfth pulse of unit 10, served on channel 1 13. Thus, this pulse distributor, assembled on the basis of only one M-KS 10X10X12, provides transmission of differently-formed pulses over 1200 channels.

Subject invention

- A relay pulse distributor containing a pulse generator and normally open contacts included in the circuit of each channel, characterized in that

in order to increase the number of channels while increasing the reliability of operation, a contact field of a multiple coordinate connector is inserted in the distributor, containing blocks for selecting and holding electromagnets,

connected to control triggers and supplied with a power supply switching unit to vertical tires made on triggers, the single input of the first of which is connected to the working contacts of all holding electromagnets, and the zero input of the last trigger to the single output trigger of the switching holding electromagnets, and the zero inputs of control triggers select and holding

The electromagnets are connected to the working contacts of the intermediate relays connected between each two selectors and each two holding electromagnetics, and the single inputs are connected to the power switching unit on the vertical busbars.

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