SU1283986A2 - Telemetering and supervisory indication device for regenerators of communication line - Google Patents

Abstract

The invention relates to telecommunications. In relation to auto-no. 1007205, the accuracy of the control is increased in the device. The device contains at the terminal station 1 a telecommand command generator 2 and a control signal receiver 3, and at each intermediate station 4 there is a remote control channel 5, a telecontrol channel 6, a control channel 7, m controlled regenerators 8, two blocks 9 and 19 keys (BC ) shift register 10, switch 11, peak detector 12, code detector 13, single vibrator 14, element OR NOT 15, element OR 1.6, key 17, grs 18 control signal, trigger (T) 20 and m optocouplers (O) 21. Logic 1 from the output of the T 20 allows the command to go to and output the BC 19. This command a logic 1 through O 21 affects the regenerator 8, varying the coefficients. divisions in the threshold control circuit. The goal is achieved by introducing BC 19, T 20 and O 21. 1 Il. (L

Description

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The invention relates to telecommunications, can be used to control the linear paths of digital transmission systems, and is complementary to the main auth. .№ 1007205,

The purpose of the invention is to improve the accuracy of control.

The drawing shows a structural electrical circuit of the telecontrol device of the communication regenerators.

The telecontrol device of the link regenerators contains at the terminal station 1 a driver of 2 telecontrol commands and a receiver 3 of the control signal, and at each intermediate station 4 a telecontrol channel 5, a telecontrol channel 6, a control channel 7, control Nftiie regenerators 8, a key block 9, shift register 10 switch 11, peak detector 12, code detection 13, one-shot 14, element ШШ-НЕ 15, element ШШ 16, key 17, control signal generator 18, additional block 19 of keys, trigger 20, th optocouplers 21,

The telecontrol device of the link regenerators operates as follows.

During normal operation, all the telecontrol nodes at the terminal 1 and intermediate 4 stations are de-energized and

.not affect the transmission of a digital signal. When it is necessary to check the controlled regenerators 8 at one of the intermediate stations 4, they are first checked without changing the noise immunity. In this case, the telecontrol command shaper is turned on, and commands are sent to channel 5 for switching the switch 11, which operates according to the following algorithm, i.e. the first command switches on the first step of the switch 11, the second

Team - both stages, the third command remains on the second stage at this intermediate station 4 and the first stage of the switch at the next intermediate station. When the first stage of the switch 11 is turned on, the resolution signal is supplied to the shift register 10 and the element OR 16, thereby unambiguously ensuring control of the controlled regenerators 8 of this

intermediate station 4. To halve the length of the shift register 10 and reduce the required number of commands to control it, the controlled regenerators 8 in intermediate station 4 are divided into two groups, the choice of which is determined by the presence or absence of a signal at the output of the second stage switch

11 supplied to the key block 9.

The choice of the controlled regenerator 8 within the group is determined by submitting the appropriate command from the driver 2 remote control commands on channel 7 to the input of the shift register 10. Thus, the control output of the desired controlled regenerator B is connected to the inputs of the peak detector 12 and the detector 13 of the code. During normal operation of the controlled regenerator 8 (the presence of pulses at its output and the absence of code violations), all the inputs of the OR 16 element are sent to signals that, passing through it, open the key 17, and the signal of the generator 18 through the key 17 is fed to channel 6 via a telecontrol and fixed at the end station 1 by the receiver 3. In the absence of pulses at the control output of the controlled regenerator 8, the peak detector 12 generates a signal that locks the key 17 through the SHSh 16 element,

most interrupts the signal of the generator 18, fixed by the receiver of the controlled regenerator 8. Each code violation at the control output of the controlled regenerator 8, allocated by the detector 13, triggers the one-shot 14 and through the OR-NO element 15, necessary for matching the levels, locks the key 17, which interrupts the signal from generator

18, which is recorded at the end station 1 by the receiver 3. The pulse duration at the output of the one-shot 14 is chosen such that even a single error is monitored

the regenerator 6 was securely fixed by the receiver 3.

In this case, the output of the trigger 20 to the control input of the additional key block 19 receives the signal O.

The outputs of the additional unit 19 and the outputs of the 21 electrons 21 also have zero signals, as a result of which the controlled regenerators 8 are not affected.

3

Then, the controlled regenerator 8 is checked when its noise immunity is changed by shifting the trigger threshold of the regenerator. Suppose we check the Kth regenerator of the first group. After checking it without changing the noise immunity, a command is sent from driver 2 via channel 7 to the input of shift register 10. This command consists of two series of pulses. The first series contains n - to pulses, which leads to the appearance of pulse 1 at the nth output of register 10, this signal transfers trigger 20 to the second stable state, and register 10 through the third input is set to the initial state,

Then the second series of pulses in the command from the driver 2 remote control commands on channel 7 is again fed to the shift register 10, and the signal on its K output is set

one ,

This ensures that the control output is reconnected. k-ro regenerator to the inputs of the peak detector 12 and the detector 13 code. Logic I from the output of trigger 20 allows the command to pass

839864.

. also on the K-th output of the additional block 19 keys. This command, in the form of l, through the optocoupler 21 acts on the regenerator 8, changing the ratio from the division in its threshold control circuit,

Claims (1)

Invention Formula Regener telecontrol device-. fO tori of the communication line on aut, sv, No. 1007205, characterized in that, in order to improve the control accuracy, a trigger, an additional key block and m optocouplers are introduced at each intermediate station, wherein . The nth output of the shift register is connected to its start input and to the first input of the trigger, the second input and output of which are connected respectively 20 with the first output of the switch and the decisive input of the additional key block, the inputs of which are connected. are unavailable with the corresponding shift register outputs, and the forward input is 25 is connected to the second output of the switch; m outputs of the additional key block are connected via the corresponding optocouplers to the control-; laziness by the threshold of the corresponding controlled regenerators.