SU809287A1 - Signal transmitting and receiving apparatus - Google Patents

Description

(54) DEVICE FOR TRANSFER AND RECEIVING SIGNALS

one

The invention relates to telemechanics and can be used in systems for monitoring the state of objects.

Known devices designed to synchronize the work of the distributor dispatching and controlled points Sch.

A common disadvantage of the known devices is that they are located in the control room and are connected to the first cell of the distributor at the facility with an additional wire.

The closest in technical essence to the present invention is a device for transmitting and receiving signals, containing distributor cells, the clock inputs of which are connected to the corresponding clock buses of the distributor, information inputs of the distributor cells through the contacts of the respective sensors are connected to the common distributor bus, block, synchronization and synchronous line 2

The disadvantage of the known device is low reliability due to the large number of wires of the communication lines.

The purpose of the invention is to increase the reliability of the device.

The goal is achieved by introducing a transistor, a zener diode, diodes and resistors into the device, the device synchronization input is connected to the emitter of the transistor and through the first diode to the common distributor bus, the base of the transistor is sequentially

0 connected Zener diode and a second diode connected to the common bus distributor, the middle point of the connection of the throne and the second diode is connected via the first resistor and the third and fourth 5 diodes with the corresponding clock of the distributor, the collector of the transistor through the second resistor is connected to the synchronization input of the first distributor cell .

0

Diagram of the device shown in the drawing.

The device contains thyristors 1,2 and 3 distributors, diodes 4 and 5, resistors 6 and 7, diodes 8-12, contacts 15 and 14 sensors, diodes 15 and 16, transistor 17, resistor-18, zener diode 19, resistor 20, diodes 21 and 22, capacitors 23 and 24, clock busses 25 to 26, device synchronization input 27, distributor 28.

The device works as follows

At the first moment of time, a negative pulse is applied to the clock bus 25, which creates a negative voltage relative to the bus 26. At the same time, the positive pulse arrives at the synchronization input 27. The thyristor 1 opens in a circuit: bus 26, thyristor 1, diode 4, resistor 6, the transition control electrode of thyristor 2, diode 9., bus 25 with a trigger pulse passing through the circuit: input 27, emitter-collector of transistor 17, resistor 18 , transfer, running of the control electrode-cathode of the thyristor 1, diode 4, resistor b, the transition control electrode-cathode of the thyristor. 2, diode 9, bus 25. The trigger pulse arrives at input 27 only for a time sufficient to open the thyristor 1, which remains open after the trigger pulse is removed. On bus 26, a positive pulse arrives at the time of the first clock of the distributor. The capacitor plate 23, connected to the cathode of diode 4, is charged with a positive potential; at the next moment, the polarity of the voltage on buses 25 and 26 changes. The capacitor 23 is discharged during a voltage reversal through thyristor 2 through the circuit: positively charged capacitor plate 23, resistor 6, the control electrode-cathode transition of the thyristor 2, the second capacitor plate 23, Consequently, the thyristor 2 opens along the circuit: bus 25, thyristor 2, diode 5, resistor 7, junction, control electrode-cathode thyristor 3, diode 10, bus 26, thyristor 1 will close because there is no voltage at input 27 and negative voltage at bus 26.

When the sensor 13 is triggered, the positive voltage is fed to the input 27 through the diode 15, and through the diode 16 the voltage goes to the base of the transistor 17, thus blocking it.

Consequently, the transistor switch does not include: is.

Information about the inclusion of sensors is provided to the control room at input 27. Further distribution is similar.

The advantage of this device is that the start-up of the distributor and the acquisition of information on the response of the sensors are performed on the same wire.

Claims (1)

Invention Formula A device for transmitting and receiving signals containing a distributor, the clock inputs of the cells of which are connected to the corresponding clock buses of the distributor, the information inputs of the cells of the distributor through the contacts of the respective sensors are connected to the common bus of the distributor, characterized in that, in order to increase the platenness, a transistor is added to it , Stabilizer, diodes and resistors, the synchronization input of the device is connected to the emitter of the transistor and through the first diode to the common bus of the distributor, the base transistor An ora through a series-connected Zener diode and a second diode is connected to the common bus of the distributor, the midpoint of the connection of the Zener diode and the second diode is connected via the first resistor and the third and fourth diodes to the corresponding clock buses of the distributor, the collector of the transistor is connected to the synchronization input of the first distributor cell via the second resistor. Sources of information taken into account in the examination 1, Elements and system of automatic control of hydroficated supports, M ,, Nedra, 1977, p., 19-21, 2, Mining machines and automation, vol. 1, M ,, 1975, p. 30-32 (prototype).