SU1256215A1 - Device for telemetry and supervisory indication of conditions of intermediate stations of communication line - Google Patents

Description

The invention relates to telecommunications engineering and can be used to control the linear paths of digital transmission systems.

The purpose of the invention is to reduce the monitoring time by providing uninterrupted communication,

FIG. Figure 1 shows the structural electrical circuit of the telecontrol device of the communication regenerators; in fig. 2 is a structural electrical circuit of a two-way amplifier.

; The telecontrol device of the link regenerators contains: at the end station 1, the driver 2: .o- remote control command, receiver 3 of the control signal; at intermediate station 4, key 5, two-way amplifier 6, selector 7, shift register 8, comparison block 9, memory element 10, regenerator 11, switch 12, code detector 13, one-shot 14, element OR 15 NOT, element OR 16, peak detector 17 and generator. 18, the control signal. The end station 1 is connected to the intermediate station 4 via the channel 19 telecontrol. Bilateral amplifier 6 contains (Fig. 2) the filter 20 of the first control frequency, the amplifier 21 of the first control frequency, 2 of the second control frequency, the amplifier 23 of the second control frequency and the low pass filter 24.

The device works as follows.

During normal operation of the communication link, channel 19 telecontrol information is not transmitted. If it is necessary to check the regenerator 11 of any intermediate station 4, the driver of the 2 telecontrol commands will issue the corresponding command. The command is transmitted by sets filled with колебharmonic oscillations with frequency F1. For the transmission of information, modulation of any kind can be used: amplitude, frequency, phase Harmonic oscillations are transmitted on channel 19 of the telecontrol and amplified at each intermediate station 4 by a two-way amplifier 6. By first sending commands are the starting package, the following packages send information about the number of the regenerator 11, the last package determines the controlled direction in the selected regenerator: direct or reverse The selector 7 demodulates the received command and converts it to logic levels. The starting parcel triggers the pilot signal generator 18, which generates the necessary pulse sequences arriving at the clock inputs of the shift register 8 and the switch 12. The received information of the shift register 8 receives all received information, which is sequentially recorded. From the outputs of the shift register 8, information arrives on the p inputs of the comparison unit 9 and on the control input of the switch 12, which selects the desired direction in the regenerator 11. The binary inputs on the other n inputs of the comparison block 9 a combination of the element 10 the memory, information recorded in it in advance. This combination determines the number of a particular regenerator. If the binary number in the ups of the shift register 8 coincides with the number written in memory element 10, then the output of the comparison unit 9 is a enable signal for the switch 12. The switch 12 is activated by the clock signal generated by the control signal generator 18.

Thus, the control output of the selected regenerator P is connected to the inputs of the peak detector 17 and the detector 13 code. During normal operation of the regenerator 11 (presence of pulses at its output and no code violations), both inputs of the OR 1b element are given signals that create a level at its output The open key 5 and the signal from the generator of the control signal 18 with frequency F2 through the key 5 are fed the first input of the bilateral amplifier 6. From the output of the bilateral amplifier 6 signal, via channel 19, the telecontrol enters the input and 3 control signals of the terminal station 1. In the absence of a signal at the control output of the regenerator 11, the peak detector 17 generates a signal that locks the key 5 through the element OR 16, thereby prohibiting the passage of the signal from the control signal generator 18 to the terminal station 1, Each violation, at the output of the regenerator 11, allocated by the code detector 13 starts the one-shot

14 and through an OR-NE 15 element necessary for matching the levels, locks key 5, which interrupts the signal from the pilot signal generator 18, which is fixed at the final station 1 by the receiver of the pilot signal 3.

Bilateral amplifier 6 works as follows (Fig. 2).

The telecontrol commands from the terminal station 1 arrive at its second input and are separated by the filter 20 of the first control frequency. The signals are then amplified by the amplifier 21 and transmitted via the telecontrol channel 19 to the following intermediate stations 4 (Fig. 1). In addition, from the additional output of amplifier 21, the signal goes to the selector 7 of this intermediate station 4. Similarly, the response signals are amplified and amplified using a filter 22 and the amplifier 23 of the second control frequency (Fig. 1). A low-pass filter 24 having a cut-off frequency below both of the control frequencies prevents excitations of amplifiers 21 and 23 through a circuit connecting the output of each of them to the input of the corresponding filter. This circuit is necessary for the passage of the current of the remote supply of the regenerators of the communication line if the device is operated through an artificial circuit of operating cable pairs.

Claims (2)

1. A telecontrol device of link regenerators containing a telecontrol command and a control signal receiver at the terminal station, and at each intermediate station a control signal generator, a peak detector and successively connected shift register, a switch, a code detector, a one-shot, or an element NOT, the OR element and the key, while the regenerator control output is connected to the second input of the switch, the output of which through the peak detector connected to another input of the OR element, the first output of the pilot signal generator is connected to another input of the key, which is different in that, in order to reduce the monitoring time by providing uninterrupted communication, a selector, a comparison unit, a two-way amplifier and a memory element are inserted into it ti, the outputs of which are connected to the corresponding inputs of the comparison unit, the second inputs of which are connected to the corresponding outputs of the second shift register outputs, the first input of which is connected to the second output of the control signal generator, t This output is connected to the third input of the switch, the fourth input of which is connected to the output of the comparison unit, the output of the key through a serially connected bilateral amplifier and selector is connected to the second input of the shift register and the control input of the control signal generator, the second input of the two-way amplifier is connected to the remote control the output of the telecontrol command generator and with the input of the pilot signal receiver, and the third input through the telecontrol channel is connected to the output of the next interval full-time station. 2. The device POP.1, characterized in that. A two-way amplifier contains a low-pass filter and a filter of the first control frequency connected in series, the amplifier of the first control frequency, the filter of the second control frequency, and the amplifier of the second control frequency, the output of which is connected to the filter input of the first control frequency and through the low-pass filter to the filter input of the second control hour. additional input of the amplifier of the second control frequency is the first input of a two-way amplifier, the second input of which is the input of the amplifier the second end the control frequency, the third input is the filter input of the second control frequency, and the output is the auxiliary amplifier output of the first control frequency. Editor S. Patrushev Compiled by V. Kamal Gin Tehred I.Popovnch Proofreader V. Sinitska Order 4837/58 Circulation 624 Subscription VNISh State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab. , d, 4/5 Production and printing company, Uzhgorod, Proektna St., 4 (DU2.