SU1453603A1 - System for remote monitoring of intermediate stations in communication line - Google Patents

Abstract

The invention relates to telecommunications. The purpose of inventions is to reduce the time of control. Sonstega contains at the transmitting part of the terminal station: Mr. I carrier frequency, modulator 2 and CM 1 shaper 3 request signals; at each intermediate station: modem 4, register 5, decoder 6 clock, address decoder 7, frequency divider 8, alarm signal detector 9, counter 10, trigger 11, control unit (CU) 12 and switch 13; at the receiving part of the terminal station: demodulator 14, decoder 15 of the polling signals, memory 16 and display unit 17. The goal is achieved by introducing control unit 12 and switch 13, which allow the system to extract information only about faulty intermediate nodes. In this case, the number of the faulty station and the type of fault, I em, are displayed. f-ly 5 4 ill. Od about with

Description

. The invention relates to communications n mol; it doesn’t have to be with the telecontool floor: n1-1Y communication

to electrozappzano dl with promenadef stations installed on them,

The purpose of the inventive one is the control of the time of control,

Fig 5 1 shows the security system / triches system of the telecontrol system .. l intermediate-1 stasch.my system with; in zi; in Fig 2, the structure of the polling station interrogation tsihla ;; Fig. 3 is a block diagram of the control unit; FIG. 4 shows the time diagrams of the operation of the device,

The system for t (monitoring of intermediate communication stations (FIG)) with

 holds on the transmitting part of the terminal station-5 a 1 H8 day generator; to it a frequent j -jj-j modulator 2.5 shaper 3 signals, 1s

 requests for each industrial mill 5

tion

four

decoder

6 sync; the decoder 7 a cres ,, divider 8 frequency-, detector 9 alarm signals ,, counter 10 ,. trigger 1 1 block) 2 management, the commentator 13f at the receiving part of the terminal station is demodulator 14; decoder 15 polling signals, block 15 memory, block 17 indica ai3, HH with

Block 12 is abraded1 .:

V t.; Jj .. i;

COMPOSED

of the D trigger IS ,. RS - T ;; i: - r repa 19. cops And 20 and 21. an inverter 22, a dual counter 23f decoder 2 i element And 25; element OR 26,

SIS: telecontrol ema Ol, h: intermediate stations system works as follows 8.3 ohm o

For1-rlrovatel 3 sig: -1alov query abbA B ae t q fr o in oh:; gn al (fi g, 2) e apros about mechs toch g5yzs ;; t of actions j sotoo from the GS-bit spaz, the number of which is one more than the number of intermediate stations — gfichy word is a sync signal: one of the units, and the remaining ones are the Dzhoicht-ny intermediate station numbers. The words are distant one O from another in a p-W gap, enough for forirovi & I am the words of the response signal i-i two w; shshg: ivyh intervals of a duration of one period of the clock frequency., Often a, necessary; For forms-background of the request signal, it is radiated from the carrier by the way of division into the form factor. 3, Received: nsh: .1y in pho;: - overrider request signal with help

j-j

five

modulator 2 is transmitted to the line. 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 t-bit register 5, from the first and last bits of which the request and response signals, respectively, are sent to the signal inputs of the communicator 13, When a sync signal is written to the register 5, a single impulse appears at the output of the decoder 6, which, with its leading edge, sets in the zero state a divider 8, forming a pulse1 1, temporary the position of which coincides, p; with the time of the presence of the query words in register 5. These pulses set counter 0 to zero, which calculates the reliability errors from detector 9, When counter 10 is filled, when the number of errors exceeds the limit value the polling period, the trigger 11 is set to one state. Before writing to the register 5 words with the address of this intermediate station, there is a single potential at the first output of control unit 12, and zero potential at the third output. Such a combination of signals at the control outputs of the switch 13 permits only request signals from the first bit of register 5 to pass through the second switch 13 to the second input of modem 4, from the third output of which the modulated request signal enters the line. When writing to the register 5, the words with the address of this intermediate the station at the output of the address decoder 7 appears a single pulse (Fig 4b), which is fed to the signal input of the control unit 12, where it is recorded inverse clock frequency in the D-flip-flop 18 and sets the front The front of the output through element ШШ 26 is a binary counter 23 of the control unit 12 to zero. At the output of the element 21, a pulse appears (Fig. 4), on the leading edge of which the station status information contained in the detector is recorded in parallel in register 5 9, and information on the validity of the transmission, contained in trigger 11, and, in the first and last discharge, zeros for the formation of guard intervals,. Front-end im0

five

0

five

0

five

in the transmitting part of the terminal station are serially connected carrier frequency generator, request signal generator and modulator, the other input of which is connected to the output of the carrier frequency generator, and the output is the output for connecting the line

connection, at each intermediate station serially connected to the modem, the first input and output are the output and the input for connecting the communication line, respectively, the register, the sync signal decoder, the frequency divider, the count of the first alarm detector output, -: i trigger, address decoder, the signal inputs of which are connected to the outputs of the register, and the installation

pulse (Fig. 4c), the trigger 19 is set to one state. A pulse appears at the first control input of the switch 13 (FIG. Ad), and a pulse (FIG. 4e) appears at the second control input. This combination of signals at the control inputs of the switch 13 only allows the tracer 13 to pass through the switch 13 intermediate station from the output of the last bit of register 5 to the second input of modem 4, from the third bit of which the modulated response signal enters the line. During a pulse (Fig. 15, a tick, the other input of which is connected to 4d), the second input of modem 4 through the switch 13 has time to go through all the response information recorded in register 5 by the front pulse dash (Fig. 4c). When the pulse is left (Fig. 4e), through input 20 is connected to the output of the clock-element divider I 20 to the counting binary input, the clock input of which and the clock input of the register are connected to the second output of the modem, in series The demodulator, the input of which is an input for connecting the communication line, the de coder of the interrogation signals, the memory block and the display unit, characterized in that, in order to reduce the counter 23 of the block 12, the passage of control move through the element AND 20 clock im-le forcibly connected unit control pulses (FIG. 4a) and NESS 1 pulse (FIG. 4g), on the leading front of which the counter of the block 23 is set to zero through the OR 26 element. In the register 5 5 on the leading edge of the clock and.-Pulses, the recorded information is continuously progressed from the first bit to the last one. The clock frequency necessary for the register 5, 40 divider 8 and control unit 12 is formed in modem 4 and synchronous with the signal request, From the modem output 4 modular, the interrogated polling signal goes through the line to the part of the signaling inputs of the switch, and the station, which is connected to the address 14 after the demodulator of the address decoder, receives the recovered signal from the counter 23 such as are for frequency (4a). After m cycles, where m is the number of response symbols, a pulse appears at the output of decoder 24 of block 12 (FIG. 4d), which sets the trigger 19 of block 12 and trigger 11 to zero state, and then the binary input

The switch, the output of which is connected to the auxiliary input of the modem, the third output of which is connected to the clock input of the control unit, the second output of which is connected to the register setup input, the third output is connected to the second control input of the switch, and the fourth output is connected to another trigger input, the output of which and other outputs of the alarm signal detector are connected to the corresponding 11m signal inputs of the register whose outputs are connected

the signal input of the control unit

ca, consisting of request signals and

Claims (2)

response, arrives at the decoder 15, after which a signal is output, carrying information only about faulty intermediate stations. This information is recorded in block 16, the output of which goes to display block 17, where the number of the malfunctioning station and the type of malfunction is displayed. Invention Formula 1, Telecontrol system for intermediate stations of communication lines, containing Serially connected at the transmitting part of the terminal station are a carrier frequency generator, a request signal conditioner and a modulator, the other input of which is connected to the output of the carrier frequency generator and the output is an output for connecting the line A clock whose other input is connected to the input is connected to the output of a frequency divider, the clock input of which and the clock input of the register are connected to the second output of the modem, in the receiving part of the terminal station the serially connected demodulator whose input is the input for connecting the An interrogation signal coder, a memory unit and an indication unit, characterized in that, in order to reduce the monitoring time, a successively connected control unit is inserted, the modem is connected in series at each intermediate station The first input and output are the output and the input for connecting the communication line, respectively, a register, a sync signal decoder, a frequency divider, a counter, the other input of which is connected to the input connected to the output of a frequency divider whose clock input and a clock input of the register are connected to the second output of the modem, in the receiving part of the terminal station, a serially connected demodulator, whose input is an input for connecting the communication line, a de-interrogation signal encoder, a memory unit and a display unit, characterized in that control time cheeks, entered successively connected to the control unit of the first output of the alarm signal detector, -: i trigger, address decoder, the signal inputs of which are connected to the register outputs, and the setup A clock whose other input is connected to the input is connected to the output of a frequency divider, the clock input of which and the clock input of the register are connected to the second output of the modem; An interrogation signal coder, a memory unit and an indication unit, characterized in that, in order to reduce the monitoring time, the control unit of the signal inputs of the switch are connected in series, and the output of the address decoder is connected to The switch, the output of which is connected to the auxiliary input of the modem, the third output of which is connected to the clock input of the control unit, the second output of which is connected to the register setup input, the third output is connected to the second control input of the switch, and the fourth output is connected to another trigger input, the output of which and other outputs of the alarm signal detector are connected to the corresponding 11m signal inputs of the register whose outputs are connected 5 40 45 signal inputs of the switch, and the output of the address decoder is connected, to gg the signal input of the control unit 2. Pop-up system 1, characterized in that the control unit consists of a D-flip-flop, an RS-flip-flop, a first, second and third AND element, a NOT element, a binary counter, a decryptor and an OR element, and the D-IN D-flip-flop is connected to the first input of the OR element and is the signal input of the control unit, the clock input of which is the input of the HE element, connected to the first input of the first AND element and to the primary the input of the decoder, the residual inputs of which are connected to the corresponding outputs of the binary counter, the C input of which is connected to the output of the first element I, and the R input of the output of the element I.1G, the second input icoToporo connected to the output of the second element I “the first input which, soy.cenny with the output of the decoder and with the R-input The RS flip-flop is the fourth output of the control unit, the second input of the second element I is connected to the output the HE element, with the C input of the D-flip-flop and the first input of the third element I, the second input of which is connected to the output of the D-flip-flop, the output of the third element I connected to the 3 input of the RS-flip-flop and the second output of the control unit, the inverse output The RS flip-flop is the first output of the control unit, the third output of which is a direct RS-flip-flop output connected to the second input of the first element AND, St / smtA f M np6m №gms4ffeii Schwens (w  Sibnal of star rbeet eveu 0ua.Z "Ff ta g u9m / t oajfoca / yelv9mi ptsvvvzhutchnenei Stomtsii, Fi.Z and Sj 6 n e well P Fi.Ts