SU1252948A2 - Device for checking non-serviced amplifying stations of communication systems - Google Patents

Abstract

The invention relates to telecommunications. The purpose of the invention is to increase the reliability of the device by reducing the power dissipation of stub resistors. The device contains an alarm block 2, a command sensor, a notification signal analyzer 4, a modulator 6, a control signal generator 7, and a pelosi on the serviced amplifier point 1 filter 8, multivibrator 9, two-input triggers And 10, memory register 11, trigger 12, block 13 remote pit (L fo

Description

The SRI, the reclosing unit 14 and the distributor 15 signals, and at each unattended booster point (NUP) 16 - the individual unit 17 of the remote power supply, elec. tron switch 18, equivalent resistance resistor 19, fault sensors 20, generator 21 notification signals, integrator 22, teleservice channel 23, direct engineering. The invention relates to telecommunications, can be used to control unattended amplifying points (LEL) cable lines and is an improvement of the invention auth.St. No. 1146807.

The purpose of the invention is to improve the reliability of the device by reducing the power dissipated by the loop resistors.

Fig. 1 shows the structural electrical circuit of the device for monitoring LUP; Fig. 2 is a structural electrical circuit of the power supply unit; FIG. 3 is a structural electrical signal distributor circuit.

The device for monitoring the NUP contains the signaling unit 2, the sensor 3 commands, the analyzer 4 notification signals, consisting of N cells 5, meters of analysis, where N is the number of NUP, modulator 6, generator 7 signals, a band-pass filter 8, a multi-vibrator 9, a dual-input And 10 element, a memory register 11, a trigger 12, a DP block 13, a reclosing block 14 and a signal distributor 15, and on each NUP 16, - 16 dual unit block 17 DP, electronic key 18, resistor 19 equivalent resistance, K sensors 20-20 faults, a notification signal generator 21 and an integrator 22, a teleservice channel 23, as well as forward 24 and reverse 25 DP wires.

The DP block 13 comprises a voltage converter 26, a transformer 27,

water 24 remote power and return wire 25 remote power. In the serviced amplification station 1, the generator 7, the modulator 6 and the band pass filter 8 alternately separate the notification signals from the LLL 16. The goal is achieved by introducing a reclosing unit and a signal distributor, and in each NML 16 integrator. Zil.

a switch 28 having ha switching cells 29-29 by the number of power supply steps, a rectifier 30 and a protection unit 31. The signal distributor 15 contains m flip-flops 32 - 32 |, w of two-input elements AND 33 - 33 |, a multi-input element And 34 and ha of elements OR 35. - 35.

11P

The device works as follows.

Each of the notification signal generators 21 is tuned to a specific frequency corresponding to the LLL 16. The signal supplied from the notification signal generator 21 via the teleservice channel 23 is fed to the input of the modulator 6. The control input of the modulator 6 is alternately received from the generator 7, different in frequency. Each controlled LLL 16 corresponds to a control signal, which, with the LAMP 16's notification signal, generates at the output of the modulator 6 an intermediate frequency signal, transmitted by a band-pass filter 8. Thus, alternate signals from the LLL 16 are alternately distributed. 7 simultaneously with the supply of a control signal to the modulator 6, a clock signal is applied to the sensor of the 3 commands. Under the influence of a clock signal at one of the outputs of the sensor 3 commands, the command to turn on the corresponding cell 5 5 .. of the analyzer analyzing 4 notification signals appears. Each controlled LLP 16 corresponds to a cell 5-5 (c, which turns on synchronous

but with the choice of a notification signal, a signal appears at the output of the analysis cell 5, corresponding to the state of the LLL monitored 16, This signal goes to the signaling unit 2. If a fault occurs on one of the LCP 16 (opening the hatch, the appearance of water, pressure changes in the cable, etc.), the nature of the notification signal from the generator 21 of the notification signals changes, and the alarm unit 2 determines the location and nature of the malfunction. When the cable is broken at the monitoring section, the remote power supply circuit of the LCP 16 is cut off, the power supply of the notification signal generator 21 is disconnected, the signal at its second output disappears, and the electronic key 18 is opened. In this case, a loop is formed between the straight conductor 24 DP and the return conductor 25 DP through a resistor 19 of equivalent resistance at the last one before the break point of the LLL 16. In this case, notification signals i are sent to the FCS 1 from all the LLO 16 to the break point except the last one before the break point . At the time of the analysis of the - signal from the LLP 16, preceding the place of the break, at the output of the bandpass filter 8, a transition from a logical unit to zero occurs. This ensures the triggering of the multivibrator 9, at the output of which a pulse arises for the time of analyzing a single signal of notification. This pulse arrives at the first input of the two-input element AND 10. At the second input of the two-input element And 10 there is also a signal

the logical unit that is generated by the control signals is sent to em due to the trigger of trigger 12 at the moment of cable break. The output signal of the two-input element AND 10 is fed to the control input of the memory register 11, permitting the recording of the state of the information signals from the sensor 3 of the commands. In this case, the logical zero signal will be at the output of the memory register 11, which corresponds to the LCP 16, the last one before the break point, since the sensor 3 of the commands sends signals synchronously with the selection of the corresponding notification signal. Signal

valve 15 (fig.Z), which works as follows. Startup impulse from re-insertion unit 14 through elements OR 35 ;, - 35

4S triggers all 32 - 32 initial state. At the same time, the second output of each trigger has a signal, for example, a logical one which from the outputs of the trigger 3

"About comes to the multi-input element And 34, the output of which produces a logical signal 1, which in the course of the multi-input element And 34 enters the S-input of the trigger 32,

logical zero is turned off corresponding to -55 the last one works, on its first

indicator in block 2 alarm. In the analysis of the following for the place of the cliff NUP 16 multivibrator

0

about

9 does not work, the two-input element And 10 remains closed, the memory register 11 retains the previously recorded information, the indicators of all LLOs 16 behind the break point are triggered (illuminated). The cable break is defined as the section between the LCP 16 with the LLL 16 number indicators turned off in alarm unit 2 and the first one turned on. The process of formation of a loop in the DC circuit when the cable is broken is as follows. At the moment of disconnection, the power supply of the jpcex generators 21 of the signals of the 5 signals and the initial loop, the DP are formed on all LLL 16 after a period of time determined by the delay of the integrator 22.

During the time period determined by integrator 22, in block 31, the protection unit has time to release the minimum protection relay (which is normally in the on state), as a result of which the control signal 26 goes to control voltage equalization (signal to reclosing unit 14. Voltage converter 26 shuts off and, accordingly, the remote supply voltage at the outputs of block 13 DP disappears; Simultaneously, at the outputs of block 14 of repetition. ka, arriving at the distributor 15, and controlling the signal, arriving at the voltage converter 26 of the DP block 13, which turns on and begins to generate a voltage. Clock pulses from the generator 7

0

control signals are sent to

valve 15 (fig.Z), which works as follows. The trigger pulse from the reclosing unit 14 through the OR elements 35 ;, - 35 sets all the triggers 32 to 32 to the initial state. In this case, a signal appears on the second output of each trigger, for example, a logical O, which from the outputs of the trigger 32

arrives at the multi-input element And 34, the output of which generates a signal of logical 1, which from the output of the multi-input element And 34 enters the S-input of the trigger 32,

to

output is set to O, on the second one. In this state, the distributor 15 is located before the arrival of the first clock pulse from the generator 7 control signals. When the first clock pulse arrives, signals 1 appear at both inputs of the two-input element And 33, and signal 1 from its output enters the trigger input 32 and the R input of the trigger 32 ,. Trigger 32 returns to its original state, it is triggered, O appears at its first output, and at the second 1. After the second clock arrives, signals 1 appear at the inputs of the two-input element AND 33, the next trigger fires, and so on. This is the sequential occurrence of control signals at the outputs of the distributor 15, which are fed to the adjusting inputs of the switch 28 of the block 13 DP. In this case, the cells 29–29 are alternately opened, the switches and the output of the block 13 of the DP increases the voltage of the remote power supply in steps. With such a stepwise increase in the voltage of the remote power supply, the required supply voltage first appears on the individual block 1.7 AC of the first of the PMO 1 CLC 16, then at the individual block 17 AC CCD 16 and so on. As a result, alternate disconnection of the PD shafts, starting from the first IUP to the last before the place of the cliff, occurs. An increase in the supply voltage at the outputs of the DP block 13 occurs until the remote supply current reaches the specified limits (O, 18-0.2A). In this case, the minimum protection relay in the protection unit 31 is activated, the control signal to the control unit disappears, the input of the reclosing unit 14 and the distributor 15 stop. At the output of the block

13, the voltage is set to supply the LCE 16 to the point of the break. At the same time, the resistor 19 has an equivalent resistance

at the place where the loop is formed (a loop resistor), the voltage drops to about 40 V (equivalent to the voltage on the individual block 17 DP in the stabilization mode).

Claims (1)

Invention Formula A device for monitoring unattended amplification points of communication systems according to the author. No. 1146807, characterized in that, in order to increase the reliability of the device by reducing the power dissipation loop resistors, serially connected reclosing unit and signal distributor are inserted at the served amplifying point, and an integrator is installed at each unattended amplifying point, while the control inputs and the first and second control outputs of the repeated unit are at the served amplifying point. switching on are connected respectively to the second output of the control signal generator, to the auxiliary output and control input of the remote power supply unit and to the installation input of the signal distributor, whose outputs are connected to the corresponding adjusting inputs of the remote power supply unit, and at each unattended amplifying point the control input of the electronic the key is connected to the second output of the signal generator through the integrator. 0m Jtf K12 to 24 P25  Kltf J K15 t 0m 1 0m W U m Editor A. Kozoriz Compiled by V. Slepakov Tehred L. Serdyukova Proofreader A.Zimokosov Order 4631/57 Circulation 624 Subscription VNIIPI USSR State Committee on cases of inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Ft,