SU928649A2 - Optronic switch - Google Patents

Description

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The invention relates to a pulse technique and can be used in automatic control systems.

According to the main auth. No. 83i9l6 is known for an optoelectronic switch containing a clock key, a starting element and cells by the number of channels, each of which is made on a photo thyristor, an electromagnetic relay, an LED, and a diode tl3.

A disadvantage of this device is the impossibility of implementing a reverse from any state of the switch, which reduces its functionality.

The purpose of the invention is to expand the functionality.

The goal is achieved by the fact that an optoelectronic switch containing a clock i switch, a starting element and cells of the same type by the number of channels, each of which is made on a photothyrator and an electromagnetic relay, the first winding terminal of which is connected to one C)

the power bus, and the second output through the photothyristor is connected to the corresponding control bus, the LED and diode connected in series shunt the relay coil, and the photo thyristor is optically connected with the LED of the previous cell, forward and reverse keys are inserted into each cell The pp cell diode is connected via the forward switch key to the second output winding pin of the np cell relay, and via the reverse switch to the second output winding pin of the () cell.

The drawing shows the electrical circuit of the device. ; Clock key 1 is connected in series to the common power supply circuit of the switch between power supply bus 2 and control buses 3 and 4, Each of cells 5-8 contains the U-12 windings of electromagnetic relays, diodes 13-16, LEDs 17-20, photothyristors 21, respectively. -24, keys 25-28 pr mogchch move ..

and keys 29-32 reverse. The winding 9-12 of the relay is connected to the power bus 33 and the key Z connects the winding 9 of the relay to the power bus 2,

Optoelectronic switch works as follows.

When the starting element (key) 3 is turned on, the winding 9 of the relay is turned on. cells 5. When the clock key 1 is turned on, the starting element- (key) 3 is disconnected, and winding 9, the relay; more than 9 hours. The clock key 1 with its closing contact supplies voltage to the control bus Ts.

Since the winding 9 of the relay has an inductance, self-induction EMF arises in it when disconnected. By the action of this EMF in a shunt circuit, consisting of an LED 17, a diode 13 and a key 25 for forward travel, current flows. The LED 17 of the cell 5 in this case includes the photo-thyristor 22 of the cell 6 optically coupled to it. As a result, the circuit 6 is turned on along the circuit, the power bus 2, the closing contact of the key 1, the control bus k, the photo thyristor 22, the winding 10 of the relay, the other bus 33 nutrition

The next cell 7 is included by resetting the clock key 1 to its original state. In this case, the control bus 4 is disconnected from the bus 2, the power supply l and the coil 10 of the relay of the cell 6 which is disconnected, switches on the LED 18, which in turn turns on the associated photo-thyristor optically connected to it through the self-induced EMF voltage. powered by bus 2 then turned on

 about

winding 11 cell relay 7.

When the next clock key 1 is turned on, the coil 12 of the cell 8 relay is activated.

In order to reverse the switch from any of its states, it is necessary to turn off the 2b-28 keys of the forward stroke and turn on the 29-32 keys of the reverse stroke.

For example, the winding 12 of relays 8 along the circuit is enabled: bus 2, the closing contact of clock key 1, bus 4, photo-thyristor 2k, winding 12 of the relay, bus 33. When clock switch 1 returns to its initial state, the winding 12 of the relay disconnects from the power supply bus 2 When disconnecting winding 12 relays

cells 8 arises in its winding EMF of self-induction, which ensures the flow of current through the shunt circuit - reverse switch 30, diode and LED 1.8, bus 33. The current flowing through the LED 18 is sufficient to turn on the photo-thyristor 23. Optically connected to it. This includes winding 11 of the relay cell 7 along the circuit: bus 2, disconnecting contact of clock key 1, bus 3, photo-thyristor 23, winding 11. relay, bus 33.

Further switching of the switch cells, with this state of the keys 25-32, is performed by the clock

U1Y1; 1OM 1.

When the clock key 1 is turned on, the winding 11 of the cell relay 7 is disconnected and the resulting self-induction EMF closes along the circuit - backward key 29, diode 13, LED 17, bus 33. The current flowing through the LED 17 is sufficient to turn on phottiristbre associated with it 22. This turns on the winding 10 of the relay along the circuit: bus 2, the closing contact of key 1, bus t, photo-thyristor 22, winding 10, bus 33. Switching the keys 25-32 to initial state provides when switching the clock key 1 direct switching cells switch a, not reversible.

Introduction of the forward and reverse keys to the IJOM optoelectronic switch allows the device to reverse its operation, which expands its functions;

Claims (1)

1. USSR author's certificate №, cl. H 03 K 17/18, 1980.