SU1062759A1 - System for transmitting and receiving supervisory indication signals - Google Patents

Abstract

A SYSTEM FOR TRANSMITTING AND RECEIVING TELESIGNALS, containing on the transmitting side a receiver, the first INPUT — of which is connected to the connection line -: z, is the start element, the output of which is connected to the first input of the switch, the outputs of which are connected to the first input of the transmitter, and on the receiving side - the transmitter, with the transmitter whose output is connected to the first inputs of the trigger element and the code converter, the output of which is connected to the second input of the trigger element, the transmitter output of the receiving party, connected with the input of the receiver of the receiving party, characterized in that, in order to increase the information capacity of the system by eliminating one frequency communication channel and no-i increasing the reliability of information transmission, the system is inserted into the system the NOT element, the delay element, the first, second and third triggers, and the amplifier; the receiver output is connected to the first input of the first trigger, the output of which is connected to the first input of the second trigger, the output of which is connected to the input of the trigger element, first in the third trigger and the input element is NOT, the output of which is connected to the second input to the sensor, the sensor outputs are connected to the input of the delay element, the output of which is connected to the second input of the third trigger, the first output of which is connected to the second input of the transmitter, the second output is with the second Bxo-sg receiver house and through the amplifier - with the W second inputs of the first and second triggers, on the receiving side in this C, the first, second, third and fourth triggers, the element NOT, the pulse generator / element NAND, the element output are entered run with union of the first input of the first flip-flop, a first output of which pulse generator output are connected respectively to first and second inputs; AND-NOT element, the output of which connect-- | w 1 not with the first inputs of the transmitter, the IJS of the second trigger and the third trigger | The first output of which is connected to the first I of the fourth trigger, the output Oi of which is connected to the second inputs of the code converter and the first OD of the trigger, the second output of which is NOT connected to the second inputs of the third and fourth triggers and the second input of the second three Mr. the output of which is connected to the second input of the transmitter, the second output to the second input of the receiver.

Description

The invention relates to the transmission of telemechanical information and can be used in organizing the transmission of information from local energy points of the power systems that provide electricity to electrified railways using only one partial communication channel between the power dispatch stations. A known system of remote cyclic information transmission control, comprising on the control side a control signal output unit, and on the control side a switching unit and N information outputting units, the output of the control output unit being connected to the input of the switching unit , the outputs of which are connected to the inputs of the corresponding information output units, the outputs of which are connected through a control channel of communication with the input of the slipway control unit for these signals ij and remote cyclic information transmission control, containing on the transmitter side a receiver, the first input of which is connected to the communication line, and the output, to the second input of the Switch and, through a delay element, to the first input of the switch, whose outputs are connected to the inputs of the corresponding sensors, whose outputs are connected to the first input of the transmitter, the output of which is connected through a communication line to the first input of the receiver of the receiving side, the output of which is connected to the first input of the code converter and through the trigger element - / 2 first input of the transmitter. However, the known systems require the use of two frequency communication channels 1 of the control and the control one, which limits the possibility of using this system at the saturation of the frequency communication channels in the communication line, or requires the construction of an additional communication line. In addition, in the known system, the half sets are not synchronized sufficiently, not taking into account the delays introduced by the communication channels, which leads to a decrease in the reliability of the transmission. The purpose of the invention is to increase the informativeness of the system by eliminating one of the frequency communication channels, as well as to increase the reliability of the transmission of telemechanical information. The goal is achieved by introducing an element NOT, a delay element, first, second and third triggers and an amplifier, the receiver output connected to the first input of the first trigger, the output of which is connected to the first input of the second trigger, the output of which is connected to the transmitting side. with the first input of the second trigger, whose input is connected to the input of the trigger element, the first input of the third trigger, and through the NO element to the second input of the switch, the sensor outputs are connected with the input of the delay element, the output of which is connected n to the second input of the third trigger, the first output of which is connected to the second input of the transmitter, the second output to the second input of the receiver and through the amplifier to the second inputs of the first and second trigger, on the receiving side the first, second, third and fourth triggers are entered into the system, the element is NOT, the pulse generator, the element IS-NOT, the output of the trigger element is connected to the first input of the first trigger, the first output of which and the output of the pulse generator are connected respectively to the first and second inputs of the element AND-NOT whose output is connected with the first inputs of the transmitter, the second trigger and the third trigger, the output of which is connected to the first input of the fourth trigger, the output of which is connected to the second inputs of the code converter and the first trigger, the output of which is NOT connected to the second inputs of the third and fourth triggers and the second input of the second trigger, the first output of which is connected to the second; eye of the transmitter, and the second one - with the second input of the receiver. The drawing shows a diagram of a system for transmitting and receiving television signals. Sensors 1 - If ,, element NOT 2 cor / 1 switch 3, start element 4, delay element 5, trigger b, two triggers 7 and 8, enter the system on the transmitter side. performing the role of analyzer of response imauls, amplifier 9, transmitter 10, receiver 11, receiver 12 and transmitter 13 on the receiving side, trigger 14, trigger 15, HE element 16, pulse generator 17, AND-HE element 18, two triggers 19 and 20, performing the role of a transmission limiting element, a starting element 21 consisting of a delay element 22 and element 23, the converter 24 code. The system for transmitting and receiving television signals follows this pattern. Telemechanical information from information sensors (the role of which are performed by remote signaling devices located in the panels of the telecontrol panel) is fed to the input

the transmitter 10 and the element 5 delay ban from the corresponding sensor IK - 1 |, is carried out using a switch 3, which in turn connects them to the inputs of blocks 5 and 10. The information series in the form of short, long and extra long pulse enters the communication line . The trigger during the transmission of information is in a state in which, from its output 1, it issues a zero prohibition signal on the receiver 11 input and permits the transmitter 10 input. At the end of the series, element 5 is triggered on the extra-long pulse and flips trigger b, which from the second output is fixed em transmitter and removes the ban from the receiver 11.

In addition, the prohibition through amplifier 9 is lifted from two triggers 7 and 8, which play the role of analyzer response pulses coming from the communication line. From the moment the ban is issued, the transmitter input removes the level from the communication line and thus creates conditions for transmitting response information from the monitored point. As information pulses are received from the output of receiver 12 located at a controlled point, serial-parallel codes will be formed in converter 24 and inserted into display elements located in panels of the power distribution board. At the end of the information series, on the sverdlinny impulse, element 21, containing elements 22 and 23, sends a pulse to one of the trigger inputs 15. the ban is lifted from two triggers 19 and 2 defining the number of response pulses.

Removing the inhibition from the element IS-NE 18 is the origin of the response pulses. On the first front of the pulse from the output of the element IS-NOT 18, trigger 14 will be triggered, which, from its output 1, removes the inhibit from the transmitter 13. A simultaneously generated zero signal at the second trigger output prohibits

further operation of the receiver 12. The first and subsequent pulses from the output of element 18 through the transmitter 13 enter the communication line and to the counting input of the trigger 19. After counting four three pulses from the generator 17, the trigger 10 from its first output issues zero to the code converter 24 and flips trigger 15, which, from output 1, prohibits switching of flip-flops 19 and 20. At the same time, from the second output, through the element NOT 16, triggers are reset to the zero position and flip-flop trigger 14 to the position at which

5 from output 1, the zero potential prohibits further operation of the transmitter 1h, and from the second output of this trigger, the negative potential is fed to the input of receiver 12, thereby telling it to receive new information. After the conversion in the receiver 11 of the response pulses, they arrive at the input of the analyzer of the response pulses — triggers 7 and 8. And

5, if four of them arrived from the communication line, then the last trigger of counter 8 issues a command to the switching unit to interrogate the next information output unit. Simultaneously signal

Q from trigger 8 switches control trigger 6 to a position in which receiver 11 is prohibited and transmitter 10 is allowed to transmit to transmit a new information pulse train. This is the beginning of the transfer of the new series. The work of the elements of the system when polling and implementing a complete new cycle of information transfer is similar to the previous one. In the system on the transmitting

On the 0 side, there is a trigger element 4, which, if there is a violation of the arrival of the response information, switches the switch 3 to poll the next controlled point.

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Thus, in the proposed system, due to the introduction of additional elements, the reliability of the transmitted information is increased, in the well-known system, due to the lack of synchronization between the sets, false work of the semi-sets takes place. In addition, the use of one frequency channel in the proposed

5 I system increases its economic efficiency.

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Claims (1)

SYSTEM FOR TRANSMISSION AND RECEIVING OF TELESIGNALS, containing on the transmitting side a receiver, the first input of which is connected to the communication line. hey, a trigger element, whose output is connected to the first input of the switch, the outputs of which are connected to the inputs of the corresponding sensors, the outputs of which are connected to the first input of the transmitter, on the ~ receiving side there is a transmitter, and a receiver whose output is connected to the first inputs of the trigger element and a code converter, the output of which is connected to the second input of the start-up element, the output of the transmitter of the transmitting side is connected via a communication line to the input of the receiver of the receiving side, characterized in that, for the purpose of increasing the information system topics by eliminating one frequency communication channel and increasing the reliability of information transfer, the element HE, the delay element, the first, second and third triggers and amplifier are introduced on the transmitting side, the receiver output is connected to the first input of the first trigger, the output of which is connected with the first input of the second trigger, the output of which is connected to the input of the trigger element, the first input of the third trigger and the input of the element NOT, the output of which is connected to the second input of the switch, the outputs of the sensors are connected to the input of the delay element and output ^- · is connected to the second input of the third flip-flop, a first output connected to a koto cerned sensor, a second input of the second output _of over- - a second WMOs · ® receiver and the house through the amplifier - a first and second inputs of the second flip-flop for receiving The first, second, third and fourth triggers are entered into the system, the element is NOT, the pulse generator is NAND, the output of the trigger element is connected to the first input of the first trigger, the first output of which and the output of the pulse generator are connected respectively 1062759 And especially to the first and second inputs of the AND-NOT element, the output of which is connected to the first inputs of the transmitter, | The second trigger and the third trigger! the output of which is connected to the first ί input of the fourth trigger, the output of which is connected to the second inputs of the code converter and the first trigger, the second output of which through the I element is NOT connected to the second inputs of the third and fourth triggers and the second input of the second three g-ger, the first output of which is connected to the second input of the transmitter, the second output - to the second input of the receiver.