SU387522A1 - SWITCH CONTROL DEVICE - Google Patents

Description

one

The invention relates to automation devices and is intended for use in distributors, in particular in multi-channel switches, etc.

In electronic switching devices, the start of the distributor, which controls the alternate switching of channels in time, is carried out from the master oscillator, the repetition period of the clock pulses of which fluctuates within certain limits and depends on the types of keys.

In the known switch control devices containing a distributor, a master oscillator and a polling rate switch, in order to change the polling rate, a number of operations that complicate the device are required. In addition, the known devices provide control of the switch with only keys of the same type, for example, with either contact or contactless keys. Therefore, in cases where it is necessary to combine different requirements for a switch — in speed, accuracy, and other parameters — you have to use two sets of switches: one with contact keys, the other with contactless ones.

The purpose of the invention is to automate the process of switching the speed of polling the switch channels, expanding its functional

Opportunity and elimination of distributor malfunction at the moment of switching.

This is achieved by introducing mutators with keys of the same type or of different types into the scheme of the control device for coA, according to the number of switched values of the interrogation rate — formers, selection triggers, coincidence schemes and master oscillators, as well as the start-up unit, the trigger trigger, the program block, and the ILR1 logic circuits c functional relationships between etpmi blocks.

The drawing shows a block diagram of the proposed device. The switch control device contains a start-up block; the circuit “OR 2 in the start circuit; trigger 3 resolution; match patterns 4; schemes "OR 5 in the chain of choice; distributor 6; program block 7; shaper 8; triggers 9 choice; specifying geierator 10; scheme "OR 11 at the output.

The control device operates as follows.

The start-up impulse from the output of the block / start-up will overturn the trigger 3 resolution, from the output

the logical one of which will receive a signal on, the first inputs of all the coincidence circuits, preparing the selection circuit of the generator, its generator. In addition, the pulse through the “PI LI 2” circuit will go to the corresponding input of the program block 7, as a result of which

control outputs will be received by a control pulse that will trigger one of the drivers 8. On program block 7, one or several input signals (successively in time) can be fed, but no more than the number of output signals of the distributor 6. At the same time, regardless of which input of program block 7 will receive a signal, the program can be composed so that the control signal can be formulated at any of the outputs of block 7.

Conditionally, we assume that such a program is installed, in which the control signals at the output of program block 7 are formed in a certain sequence, after which the cycle of operation by automatically switching the polling rate of the switch channels is repeated. The operation of the control unit continues until a reset signal is given to the trigger 3, the output of the logical "About which through the OR5 circuit will receive a signal that sets the selection triggers 9 to the initial state, as a result of which all master generators 10 stop working .

The operation of the control device will resume after the supply of a new start pulse from block 1. The switching of the polling rate occurs during the pause between clock pulses.

Subject invention

A switch control device containing a distributor, setting generators and a switch for polling the channels, characterized in that, in order to automate the switching process of polling the switch channels, expand its functionality and prevent the distributor from operating at the moment of switching, switching values of the polling rate — formers, selection triggers, coincidence circuits, as well as a trigger block, a resolution trigger, a program block, logic “IL And, at the same time, the output of the start-up block is connected to one of the inputs of the OR circuit in the start circuit and to the trigger start input of the enable trigger, in which output 1 is connected to one of the inputs of all the matching circuits, and output O is connected to one of the circuit inputs OR in the chain of choice; all outputs of the distributor, except the last, are connected to the corresponding

the inputs of the program block, and the last output through the OR circuit in the start circuit - to the last input of the program block, each output of which is connected to the input of the corresponding driver; the output of the driver is connected to the start input of the corresponding selection trigger and through the OR circuit in the selection circuit with the reset inputs of the remaining selection triggers; output "1 of each trigger selection is connected to the second

the input of the corresponding coincidence circuit, the output of each of which is connected to the trigger input of the corresponding master oscillator, whose outputs through the OR circuit are connected to the distributor trigger input.