SU1290567A1 - Switching device - Google Patents

Abstract

The invention relates to electrical measuring equipment and can be used in devices for monitoring electrical parameters of electronic components. The purpose of the invention is to increase reliability by controlling the connection. The switch contains a block of electronic switches 1, relay blocks (BR) 2,3,13, registers 4,5,23, decoders 6-10,24, power supply unit 11, pulse shaper 12, multi-contact connector VKO 14, key 15, triggers 16 , 17, elements 18,19, isolation blocks 20.21 and delay element 22. A switched circuit is connected to the communication channel (CS) by closing the contacts acc. relay in BR 2 or 3. BR 2 switches the first CS, and BR 3 - the second COP. To expand the CS, a BR 13 is introduced, in which the relays are combined into two groups: the first group is connected to the first iCC, the second group - to the second CS. T arr. Each CS has several branches, which are used to connect test equipment or stimulation devices of the test object. To turn on the relay acc. communication channel BR 13 must be enabled acc. trigger in the register 23. With the decoders 6-9,24, signals are received to enable or disable the corresponding. Triggers in registers 4,5, .- 23. 1 Il. Biinod i С / С N сс а а

Description

The invention relates to electrical measuring equipment and can be used in devices for checking and controlling electrical parameters of electronic components.

The purpose of the invention is to increase reliability by controlling the connection.

The drawing shows the electrical structure of the switch

The switch contains a block of 1 electronic keys, the first block 2 of the relay, the second block 3 of the relay, the first register 4, the second register 5, the first decoder 6, the second decoder 7, the third decoder 8, the fourth decoder 9, the fifth decoder 10, block 11 power supply, shaper 12 pulses, third block 13 relays, multi-contact

14, key 15, first trigger 16, second trigger 17, first element 18, second element 19, first isolation block 20, second isolation block 21, delay element 22, third register 23, sixth decoder 24. The switch works in the following way .

If the monitored object requires more communication channels.

than one switch provides, it is necessary to make a parallel connection of two or more blocks. This is achieved by bridging the like contacts at the output of the switches. At the same time, the number of com

mutable chains that provide

There is one switch. The switched circuit is connected to the communication channel by closing the contacts of the corresponding relay in the first block 2 relays or the second block 3 relays. The first block 2 of the relay switches the first communication channel, the second block 3 of the relay - the second communication channel. To expand the communication channels, the switchboard contains the third block 13 of the relay, in which the relays are combined into two groups: the first group is connected to the first communication channel, the second, respectively, to the second communication channel. Thus, each communication channel has several solutions that are used to connect test equipment or stimulation devices of the test object.

To activate the relay of the corresponding communication channel of the third block 13 of the relay, it is necessary to turn on the corresponding trigger in the third register 23, the activation or deactivation of which

five

0

0

 the corresponding signal from the output of the sixth decoder 24. To turn on the triggers in the third register 23, odd combinations of codes are received that are fed to the information inputs of the sixth decoder 24 from the second input of the controllers. Signals and to disable - even. combinations. Switching on or off is effected by a gating pulse, which is fed to the second control input of the switch.

To turn on the relay in the first block 2 of the relay, it is necessary to turn on the corresponding trigger in the first register 4 with signals from the output of the second decoder 7, and the disconnection is done with signals from the output of the first decoder 6.

To turn on the relay in the second block of relay 3, it is necessary to turn on the corresponding trigger in the second register 5 with the signals from the output of the fourth decoder 9, and the switching off is done with the signal from the output of the third decoder B.

The first, second, third and fourth decoders 6,7,, B and 9 are controlled by the signals of the address code, which arrive at the address input of the switch, and the control pulse, which arrives at the inputs of the first, second, third and fourth decipherors 6,7,8 and 9 from the first control input of the commutator.

The number of the switched circuit corresponds to the address code received at the address input of the switch. The number of electronic keys in the electronic key block 1 is equal to the number of relays in the first and second relay block 2 and 3. The electronic key in the electronic key block 1 is turned on by a corresponding signal from the output of the fifth decoder 10, which is controlled by the address input of the switch, and pulse from the pulse former 12 from the signal that is fed to the second control input of the switch. After the circuit connection command, the connection monitoring command arrives at the specified address. The first and second triggers 16 and 17 are activated. First trigger 16 turns on key 15, second trigger 17 turns on multi-contact connector 14. This creates a closed circuit from the second output B.cho

3

11 power supplies to the inputs of the first and second galvanic isolation units 20 and 21. After that, the second control input of the switch receives an signal that through the pulse shaper 12 and the fifth decoder 10 opens the specified electronic key in the electronic switches unit 1 and provides current flow in the connected circuit. If the contact groups of the corresponding relays in the first 2 and second 3 relay blocks are closed, the signal from their output through the closed contacts of the key 15 is fed to the inputs of the first 20 and second 21 galvanic isolation blocks, the outputs of which are connected to the first inputs of the first 18 and second 19 And elements, the second inputs of which receive delayed signals from the output of delay element 22. The presence of signals from the outputs of the first 18 and second 19 elements And indicates that the same contacts of the first 2 and second 3 pejie are closed. The presence of one signal indicates that only the contacts of one first 2 or second 3 relay blocks are included. The signal delay by the delay element 22 is selected so that it is possible to estimate the response time of the relay in the first 2 and second 3 relay blocks and can be changed depending on the type of relay and the operating conditions of the switch.

tator.

Claims (1)

Invention Formula A switch containing an electronic switch box, first and second relay blocks, first and second registers, and also first, second, third, fourth, fifth decoders, the first inputs of which are combined and are the address input of the switch, the second inputs the first, second, third, fourth decoders are combined and are the first control input of the switch, the outputs of the first and second decoders are connected respectively to the first and second inputs of the first register, the outputs of the third and fourth decoders are connected respectively of the first and second inputs the second register, the output of the p that decrypt- "the third block of the relay, the third output The rator is connected to the first input of the electronic key box, the output of the first register is connected to the first care of the first relay unit, the output of the second switch is connected to the output of the electronic key block, the first and second outputs of the sixth decoder are connected respectively to the first and second 674 The hystere is connected to the first input of the second relay unit, as well as a power supply unit, characterized in that, in order to increase reliability, a pulse driver, a third relay unit, and a multi-contact connector are introduced by controlling the connection. O five 0 5 Q five 0 5 p key, first and second trigger, first and second elements And, first and second isolation blocks, delay element, third register, sixth decoder, first input of a multi-contact connector connected to the second input of the first relay unit and to the first output of the second relay unit, and second the input of the multi-contact connector is connected to the third input of the first relay unit and the second output of the second relay unit, the first output of the multi-contact connector is connected to the second input of the electronic key box, the third input of which is connected to the second output of the multikey an ontact connector, the third input of which is connected to the output of the second trigger, the output of the first trigger is connected to the first input of the key, the second input of which is; connected to the first inputs of the first and second isolation blocks and the first output of the power supply unit, the second output of which is connected to the second inputs of the first and second isolation blocks, the third input of the second isolation unit is connected to the first output of the key, the second output of which is connected to the third the input of the first isolation unit, the output of which is connected to the first input of the first element And, the second input of which is connected to the first input of the second element And and the output of the delay element, and the second input of the second element And is connected to the output of the second block The isolators, the outputs of the first and second I elements are the control outputs, the output of the pulse generator is connected to the second input of the fifth decoder, the input of the pulse generator is connected to the input of the delay element, the output of the first relay unit is connected to the third key input and the first input of the third relay unit , the third output of the second block of the relay is connected to the fourth input of the key and the second input the key is connected to the output of the electronic key block, the first and second outputs of the sixth decoder are connected respectively to the first and second inputs 51290567. 6 The tribute of the third register, the output of which flip-flops and the delay element are it is connected to the third input by the third to second governing input of the switch, unit of the relay, and the first input is the six to third control input of which the decoder, the inputs of the first, second is the second input of the sixth decoder.