SU1587649A1 - Device for telemetry and supervisory indication of intermediate stations in communication channel - Google Patents

Abstract

The invention relates to communication technology. The purpose of the invention is to increase the accuracy of telecontrol. The device contains at the terminal station 1 a generator 2, a modulator 3, a sensor 4 pulses, a demodulator 5, a decoder 6, a display unit 7, at an intermediate station 8 — a carrier frequency selector 9, a counter 10, a fault detector 11, an error accumulator 12, a driver 13 response pulses, an interdiction element 14 and a switch 15. Under the action of the detector 11 and the accumulator 12, the imaging unit 13 generates a control signal for the element 14 in such a way that in case of an accident the response signal transmitted to the terminal station 1 is inhibited. Using a demodulator 5, a decoder 6 and a block 7, it is possible to determine the health of any intermediate station by the presence or absence of response signals at the appropriate points in time. 1 il.

Description

The invention relates to communication technology and can be used for telecontrol of communication lines with * intermediate stations installed on them *

The purpose of the invention is to increase the accuracy of telecontrol,

The drawing shows a structural electrical diagram of a device for telecontrol of intermediate stations sys- | q Communication topics.

The device contains at the terminal station 1 a generator 2, a modulator 3, a sensor 4 pulses, a demodulator 5, a decoder 6, an indication unit 7, at a pro and intermediate station 8 a carrier frequency allocator 9, a counter 10, an accident decoder, 1, a drive of 12 errors , response pulse shaper 13, prohibition element 14 and switch 15. 20

The device operates as follows.

At terminal station 1, the sensor 4 of read pulses with a given non-periodicity generates read pulses that control the operation of modulator 3 and decoder 6. The signal from the output of generator 2 is transmitted through modulator 3 to the line. The signal received through _14TH from the line through demodulator 5 and decoder 6 is displayed on block 7 indication. At the intermediate station 8 from the output of the carrier frequency allocator 9, the signal is supplied to element 14.

(Prohibition and counter 10. Switch 15, which is under the influence of the incoming control signal from the driver 13 of the response pulses in the lower position, wraps the read signal ₄ θ to the terminal station 1. As soon as the counter 10 has the specified number of carrier frequency periods, switch 15 under the action of a control signal generated in 45 shaper 13 response pulses, it will switch to the upper position and transmit the carrier frequency further along the linear path to the following intermediate stations with similar equipment Under the action of the accident detector 11 and the error accumulator 12, the response pulse generator 13 generates a control signal for the inhibit element 14 so that in the event of an accident the response signal transmitted to the terminal station 1 is prohibited, since the capacity of the counter 10 is known in advance and the same in all intermediate stations 8, then each intermediate station 8 will correspond to a well-defined time interval, therefore, at terminal station 1, using demodulator 5, decoder 6 and indication unit 7, you can determine the health of any th intermediate station on the presence or absence of answer signals at the appropriate times.

Claims (1)

Claim A telecontrol device for intermediate stations of a communication system that contains a pulse sensor at the terminal station and a series-connected generator and modulator, the output of which is the input of the first intermediate station, at each intermediate station, a carrier frequency isolator, the input of which is the input of the intermediate station, and series-connected accident detector , error accumulator, response pulse generator and prohibition element, the other input of which is connected to the first output of the carrier frequency isolator, distinguishes In that, in order to increase the accuracy of telecontrol, the terminal station has serially connected demodulator, decoder and display unit, the input of the demodulator is the input of the terminal station, which is connected to the first output of all intermediate stations, the first output of the pulse sensor is connected to another input of the modulator , the second output is to another decoder input, and at each intermediate station a switch and a counter are introduced, the input of which is connected to the second output of the carrier frequency isolator, and the outputs are connected to corresponding to the second inputs of the response pulse shaper, the second output of which is connected to another input of the error accumulator, the third output is connected to the equalizing switch input, the information input of which is connected to the output of the inhibit element, the first output is the first output of the intermediate station, and the second output is the second the output of the intermediate station and connected to the input of the subsequent intermediate station,