SU1573540A1 - Device for checking communication regenerators with pulse-code modulation - Google Patents

Abstract

The invention relates to telecommunications. The purpose of the invention is to improve the control accuracy by determining the number of the regenerator with reduced noise immunity. The device contains, at the transmitting terminal station, a transmitter 1 of telecontrol commands, a controlled oscillator 2, a continuous detuning controller 3, a linearly varying voltage driver 4 connected to a controlled communication line 5, and a matching unit 7 at the receiving intermediate station 6, the receiver 8 telecontrol signals, 9 clock pulses, a shaper 10 time intervals, a phasing unit 11, an analyzing unit 12. To monitor an intermediate station, the transmitter 1 sends a "Ready" command to the controller input 3. After the "Ready" command is transmitted, a "Number Transfer" command is generated on the sending side. If the signals of the corresponding frequency changes are sent to the line before the next Ready command arrives, then the receiver 8 will switch the intermediate station 6 with the corresponding number to the monitoring mode. 4 il.

Description

I

(21) 4467247 / 24-09

(22) 07.25.88

(46) 06.23.90. Bul No. 23

(72) Yu.V.Pokotilov, I.F.Zabelin

and S.N.R. Boshalchenko

(53) 621.396.664 (088.8)

(56) USSR Copyright Certificate No. 557494, cl. H 04 B 3/46, 1974.

(54) DEVICE FOR CONTROL OF REGULATORS OF COMMUNICATION LINES WITH PULSE-CODE MODULATION

(57) The invention relates to telecommunications. The purpose of the invention is to improve the accuracy of control by determining the number of the regenerator with reduced noise immunity. The device contains at the transmitting terminal station a transmitter 1 of telecontrol commands, a controlled oscillator 2, a regulator 3 of smooth detuning, a driver 4

linearly varying voltage, connected to the controlled communication line 5, and at the receiving intermediate station 6 - matching unit 7, receiver 8 telecontrol signals, selector 9 clock pulses, shaper 10 time intervals, block 11 phasing, analyzing unit 12, For monitoring the intermediate station, the transmitter 1 sends the Readiness command to the input of the controller 3. After the transfer of the Readiness command, a Transfer Number command is generated on the transmitting side. If, prior to the arrival of the next Readiness command, the signals of the corresponding frequency changes are sent to the line, then the receiver 8 will switch the intermediate station 6 with the corresponding number to the monitoring mode. 4 il.

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The invention relates to telecommunications and can be used in a telecontrol system of link regenerators with pulse code modulation.

The purpose of the invention is to improve the control accuracy by determining the number of the regenerator with reduced noise immunity.

Fig. 1 shows a structural electrical circuit of a device for cdntrol communication line regenerators with pulse code modulation; on, 2-4 - diagrams of stresses and characteristics of time - frequency and frequency of operation, which explain its work,

The device for monitoring the regenerator t4rov of communication lines with pulse-code modulation contains, at the transmitting-terminal station, a transmitter of 1 ton of control commands, a controlled oscillator 2, a regulator 3 of smooth detuning, a driver 4 linearly voltage, connected controlled line 5, and at the receiving intermediate station 6, the matching unit 7, the receiver 8 telecontrol signals, the extractor 9 clock pulses, the driver 10 time intervals, the unit 11 of phasing and the analyzing unit 12.

The device works as follows.

In the initial state, the controlled s g en tor 2 transmits to line 5 the nominal value of frequency f0, which, after passing through line 5 and the matching unit 7, is selected with the selector 9 clock pulses. With this, at the output of the analyzing unit 12, which is a frequency-voltage converter, the signal is zero (Fig. 3), the telecontrol system does not work, and the command Start counting is sent to the shaper of 10 time intervals

To control the Nth intermediate station, at the command of the operator, the transmitter 1 of the telecontrol commands generates the Ready command at the output, which is fed to the second input of the controller 3 of smooth detuning

In this case, the shaper 4 of a linearly varying voltage through the control inputs acts on

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a continuous detunner 3, which at its output generates a sawtooth voltage in the range from O to -U in time T - (FIG. 2a), which is determined by the parameters of the ramp voltage generator 4 and the frequency of the transmitted signal f0.

A change in the control voltage at the input of the generator 2 causes a corresponding change in frequency from Ј "to (Fig. 3).

At the intermediate station 6, the signal passes through the matching unit 7, is allocated at the output of the selector 9 clock pulses and is fed to the input of the analyzing unit 12, which at its output generates a linearly varying voltage corresponding to the change in the transmission frequency (Fig. 3). If at the output of the analyzer (unit 12, the voltage reaches the value of -U (fig. 2a) and at the same time a transfer pulse appears at the output of the shaper 10 (fig. 26), then a signal appears at the output of the phasing unit 11 (fig , 2c), which, affecting the input - receiver 8 telecontrol signals at all intermediate stations 6, sets them to the Ready state,

As a generator of 10 time intervals, a counter can serve, the counting input is connected to the output of a 9 clock pulse selector, the setup input is connected to the output of the analyzing unit 12 (the counter starts working as soon as the output of the analyzing voltage block is different from zero), and the output to the input of the phasing unit 11.

After transmitting the Readiness command, a Transfer number command is formed at the transmitting side, at which a certain intermediate station 6 is monitored. For this, the transmitter 1 of the telecontrol commands generates a + command at its output, which is similar to the Readiness command at the output — generates a change in the output of the controlled generator 2 range from fo to Ј0 + df during T + time (FIG. 2a).

At intermediate station 6, the signal passes in the same way as the Ready signal,

If N corresponding frequency changes are sent to the line before the next Ready command is received, the receiver 8 of the telecontrol signals places the intermediate station 6, to which the corresponding number is assigned, into the monitoring mode.

As can be seen in FIG. 2a, before the start of each frequency change, the transmission frequency is equal to Ј0, which corresponds to the transmission to the shaper of the time intervals of the command Start of counting

After monitoring the intermediate station 6 with the number N, the Ready command is sent to line 5 and N + 1 frequency changes from Ј0 to f0 + df are sent in time T +. In this case, the intermediate station with the number N-1 enters the control mode.

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Formula of the invention A device for monitoring regenerators of communication lines with pulse-code modulation, containing in series at the transmitting terminal station a continuous detuning regulator and a controlled oscillator, the output of which is an output for connection to the input-controlled line cf - 30 intervals introduced.

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and, at each receiving intermediate station, a series-connected matching unit, whose input is an input for connecting the output of a controlled communication line, a clock extractor, an analyzing unit and a phasing unit, characterized in that, in order to improve the accuracy of control by determining the number of the regenerator from reduced noise immunity, a transmitter of telecontrol commands is entered at the transmitting terminal station, the outputs of which are connected to the inputs of the smooth detuning controller, the driver linearly varying voltage connected between the output of the controlled oscillator and

other inputs of the smooth controller, detuning, and on the receiving side - the driver of the time intervals connected between the output of the clock extractor and the other input

the phasing unit, the outputs of which are connected to the inputs of the entered receiver of telecontrol signals, and the output of the analyzing unit is connected to another input of the imager

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Claims (1)

CLAIMS Apparatus for monitoring lines regenerators connection with pulse code modulation, comprising at a transmitting terminal station series connected regulator smooth detuning and the controlled oscillator, whose output is an output for connection to an input of a controlled line svya and at each receiver promezhutochstantsii sequentially _h soedinensoglasuyuschy block input which is an input for connecting the output of a monitored communication line, a clock pulse extender, an analyzing unit, and distinguishing In order to increase by determining pa with reduced noise immunity, a transmitter of telecontrol commands has been introduced at the transmitting terminal station, the outputs of which are connected to the inputs of the controller for smooth detuning, a shaper of a linearly varying voltage connected between the output of the controlled generator and other inputs of the controller is smooth. detuning, and on the receiving side a time interval shaper connected between the output of the clock pulse extractor and another input of the phasing unit, the outputs of which are connected to the inputs of the inputted receiver of telecontrol signals, while the output of the analyzing unit is connected to another input of the shaper 30 steps in time. Figure 2