SU1107300A1 - Device for telemetry and supervisory indicating of conditions of repeater stations of communication system - Google Patents

Abstract

A DEVICE FOR TELECONTROL OF THE INTERMEDIATE STATIONS OF THE COMMUNICATION SYSTEM contains on the transmitting part of the terminal station serially connected carrier oscillator -frequencies and modulator, on each intermediate station a sync descrambler, serially connected modem, receiving register and address decoder, as well as connected successively detector and address decoder and also connected sequencing detector and address decoders and also successively detector and address decoder and also sequencer connected detector the synchro decoder inputs are connected to the outputs of the receiving register, the output of which is the last bit connected to the first input of the mod ma, and at the receiving part of the terminal station the demodulator and the serially connected memory unit and the display unit, while the second input of the modem of the intermediate station is connected to the modulator output of the transmitting part of the terminal station, the second modem output - with the demodulator input of the receiving part of the terminal station, characterized in that, in order to increase the accuracy of the control, the driver of the request signals, the input and output of which are connected to the inputs of the modulator, are introduced at the intermediate station at the transmitting part of the terminal station The divider and the sequentially connected trigger and transmit register are entered, the output of the sync signal decoder is connected to the installation input of the address decoder i C /) and the installation input of the counter, the output of which is connected to the first input of the trigger, the second input connected to the output of address decoder and installation the input of the transmitting register, the signal inputs of which are connected to the corresponding outputs of the alarm signal detector, the clock input of the transmitting register with the corresponding inputs and receiving -sj register. The splitter and the third output of the modem, the third input of which is: о о is connected to the output of the transmitting register, at the receiving part of the terminal station a polling signal decoder is inputted, the input of which is connected to the output of the demodulator, and the output to the input of the memory unit.

Description

The invention relates to telecommunications and can be used for telecontrol of communication lines with intermediate stations installed on them. A device for telecontrol of an intermediate station of a communication system is known, which contains a serially connected carrier frequency generator and a modulator at the transmitting terminal station, an address decoder at each intermediate station, an alarm signal detector and a counter connected in series, and a display unit at the receiving terminal station. eleven. However, this device requires a long time telecontrol of intermediate stations of the communication system. The closest to the present invention is a device for telecontrol of intermediate stations of a communication system, containing in series at the terminal end station a series connected non-frequency generator and a modulator, at each intermediate station a sync decoder, serially connected modem, receiving register and address decoder, as well as the alarm signal detector and the counter connected in series, the sync signal decoder inputs connected to the outputs of the receiving register, the output of the last bit Yes, which is connected to the first input of the modem, and at the receiving part of the terminal station the demodulator and the serially connected memory block and the display unit, while the second input of the modem of the intermediate station is connected to the modulator output of the transmitting part of the terminal station, and the second output of the modem is connected to the input the demodulator of the receiving part of the terminal station 21. The indicated device does not allow for sufficient accuracy of the body of control of intermediate points. The purpose of the invention is to improve the accuracy of control of intermediate points. The goal is achieved by the fact that the telecontrol device of the intermediate stations of the communication system, which contains serially connected carrier frequency generator and modulator to the transmitting part of the terminal station, decoder a synchronizing signal, serially connected modem, receiving register and address decoder at each intermediate station, and the alarm signal detector and the counter also connected in series, the clock decoder inputs being connected to the outputs of the receiving register, the output of the last bit and which is connected to the first input of the modem, and at the receiving part of the terminal station the demodulator and serially connected memory block and the display unit, while the second input of the modem of the intermediate station is connected to the modulator output of the transmitting part of the terminal station, the second modem output - to the demodule input the torus of the receiving part of the terminal station; the driver of the request signals is inputted at the transmitting part of the terminal station; its input and output are connected to the modulator inputs, a divider is inserted at each intermediate station and after a connecting trigger and a transmitting register, the clock decoder output being connected through a divider to the address decoder input and the counter installation input, the output of which is connected to the first trigger input, the second input of which is connected to the address decoder input, the transmitting register input, which signal inputs are connected with the corresponding outputs of the alarm signal detector, the clock input of the transmitting register - with the corresponding inputs of the receiving register, divider and tr tim modem output, a third input coupled to an output of the transmitting register to the receiving part terminal station entered the interrogation signals decoder, having an input coupled to an output of the demodulator, and an output - to an input of the memory unit. The drawing shows a structural electrical circuit of the proposed device. The device for the telecontrol of the communication system's transit stations will hold a carrier frequency generator 1, a modulator 2, a shaper 3 request signals, a modem 4 at each intermediate station, a reception register 5, a sync decoder 6, at each intermediate station.

decoder 7 addresses, divider 8, alarm signal detector 9, counter 10, trigger 11, transmitting register 12, demodulator 13 at the priomnoy part of the terminal station, polling signal decoder 14, memory block 15, indication block 16;

The device works as follows.

Shaper 3 generates a digital request signal for intermediate stations, consisting of n bit words, the number of which is one greater than the number of intermediate stations, the first word being a clock signal and consisting of one units, and the rest are binary numbers of intermediate stations. The words are separated from each other by time intervals sufficient to form a word of the response signal and two guard intervals of one clock period duration. The carrier frequency is generated by the generator 1. The clock frequency needed to form the request signal is obtained from the carrier by dividing it in the driver 3. The request signal received in the driver 3 is transmitted to the line by means of the modulator 2.

At the intermediate station, the request signal of the intermediate stations is restored from the modulated input signal by modem 4, after which the request signal symbols are promoted through the n-bit receiving register 5, from the last bit of which the request signal goes to the corresponding mode 4 input. the sync signal register at the output of the decipheror appears 11 pulses, which sets in the zero state the divider 8, which generates pulses, the temporary position of which coincides with the time of presence query words in the receive register 5. These pulses are set to zero the counter 10 is produced conductive count validity errors received from detector 9

When the counter 10, which occurs when the number of errors is filled, exceeds the harmonic value during the polling period, the trigger 11 is set to one. When writing to the receiving register 5 words with the address of this intermediate station, a pulse appears at the output of the decimator .7, allowing writing in the parallel code to all but the first and last bits of the transmitting register 12 of the station state information contained in the detector 9 and information about the reliability of the transmission contained in the trigger 1.1, and in the first and last bits - zeros for the formation of protective intervals. The trailing edge of the same pulse trigger 11 is set to the zero state. After recording the information on the state of the intermediate station and on the reliability of the information transfer to the transmitting register 12, the recorded symbols are promoted through the transmitting register 12, from the last bit of which the response signal in the serial code goes to the corresponding input of modem 4.

The clock frequency required for the operation of the receive register 5, the divider 8 and the transmitting register 12 is formed in modem 4 and synchronous with the interrogation signals. From the output of modem 4, the modulated signal arrives at the receiving part of the terminal station, where, after the demodulator 13, the recovered interrogation signal consisting of the request and response signals is transmitted to the decoder 14, after which a signal carrying information only about the failed intermediate stations is output. This information is recorded in block 15, the output of which goes to block 16, where the number of the malfunctioning station and the type of malfunction is displayed.

The receiving part can be located either at the same terminal station, where the transmitting station is located, or at the other one, or both at the same time, which allows, depending on the structure of the communication network, to receive information on the status of the intermediate stations both at any of the terminal stations and on both simultaneously without doubling the intermediate station.

The telecontrol device of the intermediary stations of the communication system permits an increase in the telecontrol accuracy, which leads to an increase in the reliability of communication and the quality of service.

Claims (1)

DEVICE FOR TELECOMMUNICATION OF INTERMEDIATE STATIONS OF A COMMUNICATION SYSTEM, comprising, at the transmitting part of the terminal station, a carrier-frequency generator and a modulator connected at each intermediate station, a clock decoder connected in series with a modem, a reception register and an address decoder, as well as an alarm signal detector and a counter connected in series the inputs of the clock decoder are connected to the outputs of the receiving register, the output of the last bit of which is connected to the first input of the modem, and on the receiving part of the terminal station, the demodulator is connected in series with the memory unit and the display unit, while the second input of the modem of the intermediate station is connected to the output of the modulator of the transmitting part of the terminal station, the second output of the modem is connected to the input of the demodulator of the receiving part of the terminal station, characterized in that, in order to increase control accuracy, a signal generator of the request signal, the input and output of which is connected to the inputs of the modulator, is introduced at the intermediate part of the terminal station, at each intermediate station the trigger and the trigger and transmitter are connected in series, and the output of the clock decoder through the divider is connected to the installation input of the address decoder and the installation input of the counter, the output of which is connected to the first input of the trigger, the second input of which is connected to the output of the address decoder and the installation input of the transmitting register, signal inputs which is connected to the corresponding outputs of the alarm detector, the clock input of the transmitting register with the corresponding inputs of the receiving register, Delhi the receiver and the third output of the modem, the third input of which is connected to the output of the transmitting register, a polling signal decoder is introduced at the receiving part of the terminal station, the input of which is connected to the output of the demodulator and the output to the input of the memory block.