SU1608725A1 - Transmitting device of remote control system - Google Patents

Abstract

The invention allows for the transmission of both telecontrol signals and information flows from a computer to the telemechanical channel. The aim of the invention is to expand the scope of application by providing automatic input of various information flows. The device comprises a telecontrol command transmitter (TU) 2, AND-HE elements 3 and 4, a transmitter 5 representing the telemechanical channel directly, an input / output unit 1, and an information transmission unit 12, monitoring the transmission mode and generating transmission control commands connected via computer interface. Unit 12 generates a series of TU signals depending on computer commands and the state of the transmitting channel of the telemechanics system. 2 Il.

Description

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The invention relates to telecontrol and can be used to control power supply facilities by computer commands on electric railways while maintaining the push-button control method from the side of the dispatcher with

The purpose of the invention is to expand the field of application of the telecontrol transmitter by providing automatic input of various information flows into the transmitter of the device. The application of the proposed device will allow the introduction of a computer into the control loop of the power supply objects and automate the telecontroller's (TU) functions of the power dispatcher. As a result, the quality of power supply to consumers will decrease, the number of accidents will decrease, train delays in emergency situations will decrease. ; Fig, 2 - time diagrams of his work,

The device contains an input-output unit 1, a shaper 2 commands TU, the first 3 and second 4 elements AND-NOT, a transmitter 5, an output 6 a shaper 2 commands TU a control output 7 of a block 1 input-output, an information control output 8 I / O unit 1, output 9 of the second element AND-NOT 4, output 10 of the first element AND-NE 3, output 11 of the transmitter 5, block 12 of transmitting information, monitoring the transmission mode and generating transmission control commands, two-way communication interface 13 between the input / output unit 1 and the communication unit 12. the two-way communication interface 14 between the unit 12 and EVMo

Let us consider the timing diagrams of the operation of the telecontrol transmitting device by the example of the formation of a series of TU of the LISNA system with the frequency division of the LYON channels. Timing diagrams show the state of output 6 - the output of the driver 2 commands TU, the output 7 - the control output of the I / O unit 1, the output 9 of the inverted signal at the output .8 - the information and control output of the I / O unit 1.

The device works as follows.

Block 12, via interface 14, receives two control words from the computer, in which

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This contains information about the nature of the future switching of the power supply facility.

Further, it analyzes a series of TU signals from the imaging unit 2, and if they are idle, then at the right moment of time blocks the imaging unit 2 and transmits to the transmitter 5 two command sets of the TU, which it generates, depending on the information, contained in two control words. At the same time, unit 12 controls each element of the formed series. Then he releases the driver 2 at the right time and waits for the next control words from the computer.

The I / O unit produces galvanic isolation and level conversion between computer circuits and telemechanics circuits. It is also a switch with which it is possible to connect unit 12 to several remote control channels (TM), each of which consists of elements 3, 2, 4 and 5,

It must be said that blocks 12 and 1 may have different practical implementation. They can be implemented both with the use of microprocessor means, which are programmed according to a specific algorithm, or with the use of hard logic elements. In the latter case, the algorithm of functioning of block 12 will depend on the interrelations between all its elements.

In the proposed TU device, several types of shapers of 2 TU commands can be used.

The shaper 2 of the LISNA-4 system continuously sends a idle series to the transmitter, which consists of 30 short pulses and pauses and one super-long clock pulse. This makes it possible to continuously monitor the health of the channel, as well as the entire transmission and reception path, with the exception of execution circuits. To form a command series of signals TU, the dispatcher must press two buttons on the control panel. With the help of the contacts of the buttons, co; ov combination is formed. The coding of the necessary information is carried out in a pulse-width manner. So, in a command series of signals, TU lengthens six pulses;

transmitted twice. Each series ends with a super long pulse.

C | (THROUGH the first element AND-NOT, block 12 blocks shaper 2 at the right time. With the second element, IS-4, block 12 sends its command series TU to transmitter 5.

Transmitter 5 converts square-wave signals at its input into frequency-modulated and sends them to link II.

In the computer, as well as in block 12 devices, the signals of the following types are used: O - O B; 1 - 3.6 B. In blocks 24, 3 and 5 of the device, the signals of the following parameters are used: - О В, 1 - 8 V.

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When forming a series of signals TU 20

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The diy between the computer and the unit 12 is arranged in a manner.

In EV, programs function;

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) i.e. with power supply management receivers. When any of these programs need a re control, then it should generate file-switching capacity, equipping. According to a special computer system using a data bank.

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previously generated, converts each line from the switch file, corresponding to switching one

one hundred power, two 16-bit machine words. Further

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on the dya governing words. Unit 12 establishes a series of TU signals in the knowledge of the information contained in the control words. Computer by tele-signaling through special devices

input receives confirmations of

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switching necessary power supply facilities.

Thus, unit 12 of the device is used as a programmable or hardware controller with which the computer acts on the transmitting device TU.

Claims (1)

Invention Formula Telecontrol transmitting device containing telecontrol command shaper and transmitter, the output of which is connected to the communication channel, characterized in that, in order to expand the field of application by providing automatic input of various information streams, the first and second elements of AND-NOT input block are inserted into the device - output, information transmission unit, control of transmission mode and generation of transmission control commands, the output of the telecontrol command generator is connected to the first input of the first NAND element and to the inform the I / O unit input, the control output of which is connected to the second input of the first NAND element, the output of which is connected to the first input of the second element, the output of which is connected to the input of the transmitter and to the control input, - the control output of which is connected to the second input of the second NAND element, the inputs-outputs of the I / O unit are connected to the corresponding inputs-outputs of the information transmission unit, control of the transmission mode and generation of transmission control commands.