SU987828A1 - Device for remote monitoring of intermediate communication system stations - Google Patents

Description

The invention relates to telecommunications and can be used for telecontrol of communication lines with intermediate stations installed on it.

A device for a telecontrol of intermediate stations is known; a communication system comprising, at a transmitting terminal station, serially connected carrier frequency generator and modulator, the first and second inputs. So they are connected to the input and output of the address generator and time interval at the intermediate intermediate station 6nov for the separation of the carrier and the envelope of the telecontrol, 1Freater of the address, the forms, the time interval solver and the series-connected alarm detector stations demodulator and display unit fij. .

However, the device requires more time. Telecontrol of intermediate stations of the communication system. The purpose of the invention is to reduce the telecontrol time. To achieve the goal, the device for the telecontrol of the intermediate stations of the communication system, containing

The transmitting terminal station is a serially connected carrier frequency generator and a trp module, the first and second inputs of which are connected respectively to the input and output of the address generator and the time interval, at each intermediate station - the block for allocation of hens and. by the telecontrol signal bend, the address decoder, time interfacing time generator and serially connected avarkar signal detector and counter, and at the receiving end station the demodulator and display unit are entered at each intermediate station the sync signal decoder and the serially connected shift register and modulator, and the sequential shear register and modulator, and the descrambler of the clock signal and the serially connected shift register and the modulator, and the successively connected shift register and modulator, are entered at each intermediate station the receiving terminal station is a serially connected additional shift register and a memory block. At the same time, at each intermediate station the first and second outputs are block. By allocating the carrier and octagon signals, the telecontrol is connected respectively to the second input of the controller and to the polling input of the shift register / address and information outputs of which can be connected to the corresponding scraper decoder inputs, the output of the rotary clock through the time interval generator is connected to the second counter input counter which is connected to the corresponding signal input of the shift register, the address outputs of which are connected to the corresponding inputs of the address decoder, the first and second 1 outputs of which th are respectively connected to a second input of the time slot, and a control input detector of alarm, alarm You are a. the strokes of which are connected to the cooTsetctual informational inputs of the displacement transistor, and at the receiving end station the output of the demodulator is connected to the input of the additional shift register, and the output of the memory unit is connected to the input of the display unit.

FIG. 1 shows a structural electrical circuit of the device for telecontrol of intermediate stations of the communication system; in fig. 2 - structure of the interrogation signal of intermediate stations.

The device for telecontrol of intermediate stations of the system. The communication contains, at the transmitting terminal station, a carrier frequency generator 1, a modulator 2, a driver of 3 addresses and a time interval; at each intermediate station - block 4 of the allocation of carrier and signal envelope, telecontrol, shift register 5, sync signal decoder, address decoder 7, alarm signal detector 8, time interval imager 9, counter Yu and modulator 11} at the receiving end station - demodule the torus 12, the additional shift register 13, the memory unit 14 and the display unit 15.

The device for telecontrol of the intermediate stations of the system and the communication works as follows.

The shaper 3 addresses and the time interval generates a digital signal (Fig. 2) interrogation of intermediate stations. In the generated signal, a time interval is defined for determining the reliability of the transmission and a sequence of m bit words, the first of which represents a clock signal and the number of the remaining words is equal to the number of intermediate stations. Each word consists of an address part, which determines the number of the requested intermediate station, and an informational part for transmitting information about the state of the intermediate station, including the reliability of the transmission. Carrying. the frequency and the clock frequency for the operation of the address generator 3 and the time interval is generated

generator 1 carrier frequency. The interrogation signal obtained in the imaging unit 3 is transmitted by a modulator 2 to a line. At the intermediate station from the input modulated signal

The telecontrol signal is restored by the interrogation signal of the intermediate stations by the carrier separation and the signal envelope unit 4, after which the interrogation signal symbols are promoted.

through the p-bit shift register 5, which has n − k write inputs, k address outputs, and n − k information outputs, denoted by the letter Q with the corresponding index. With

writing to the word shift register 5, in which the address of the requested station is located, a pulse appears at the output of the 7c1 address decoder, which permits recording in parcel

code in the information bits of the register 5 shift information about the station. At the same time, an entry is made in the information bit (of the symbol determining the reliability of

transmissions after counting errors by the counter 10 during the time interval for determining the confidence coming from the output of the imaging unit 9 time interval. This interval is formed as follows. When a word shift appears in register 5 with the address of the last intermediate station, a signal appears at the second output of address decoder 7, which sets the time interval generator 9 to the state corresponding to the beginning of the count, to the state corresponding to the end of the count, which corresponds to the time interval of the confidence level. After recording the information about the state of the intermediate station and the reliability of the transfer to the information bits of the shift register 5, the signal from the output of the last bit of the given register in the sequential code goes to the modulator 11, the second input of which receives the carrier frequency from the carrier separation and envelope 4 SigSishov telecontrol. From the modulator output, the signal arrives at the receiving terminal station, where after demodulator 12 there is a recovered signal similar to the polling signal.

It is recorded in the additional shift register 13, after which a signal is output, carrying information only about the failed intermediate stations. This information is recorded in the memory unit 14, from the output of which is fed to the indicator unit 15. where the number of the malfunctioning station and the type of the malfunction is displayed.

Technical and economic efficiency of telecontrol device

intermediate stations of the communication system; is to reduce the telecontrol time by 1 paSf where I is the number of intermediate stations.

Claims (1)

Invention Formula A device for telecontrol of the intermediate stations of the communication system, containing the serially connected carrier frequency generator and modulator to the transmitter of the terminal stage, the first and second inputs of which are connected respectively to the input and output of the address time generator and the time interval; allocation of carrier and envelope signal control telecontrol, address decoder, time generator and serially connected alarm signal detector and counter, and at the receiving end th station - demo, LUH chor .:: th display unit, so that, in order to reduce telecontrol time, the descrambler of the clock signal and the series-connected shift register and the modulator are inserted at the intermediate station hgikadoy and stations - serially connected additional shift register and memory block, while ; Each intermediate station has the first and second outputs of the carrier extraction signal and the signal body envelope. The control is connected to the second input of the modulator and the polling input of the shift register, the address and data outputs of which are connected to the corresponding inputs of the sync signal decoder, which output through the time interval generator is connected. with the second input of the counter, the output of which is connected to the corresponding signal input of the shift register, the address outputs of which are connected to the corresponding input address decoder, the first and second outputs of which are connected respectively to the second input of the time interval generator and to the control, the input of the alarm signal detector, the signal outputs of which are connected to the corresponding information inputs of the shift register, and at the receiving end station the output of the demodulator is connected to the input of the additional shift register, and the output of the memory unit is connected to the input of the display unit, Sources of information taken into account in the examination 1. USSR author's certificate. 677113, cl. H 04 B 3/46, 1976 (prototype).