SU841001A1 - Teleindication device with time division of channels - Google Patents

Description

(54) TELESIGNALIZATION SYSTEM WITH TEMPORARY SEPARATION OF SIGNALS In the invention, the purpose is to increase the informativeness of the system. This goal is achieved by the fact that in the remote signaling system with time-division signals, containing the Synchronization unit at the control point, the output of which is connected to the first input of the clock generator, the output of the clock generator is connected. with the input of the imaging unit, clock pulses, the first input of the receiving unit and the communication line to which the output of the sync pulse generator and the second input of the receiving unit, the terminal conversion unit are connected, at each controlled point the receiving unit of the synchronizing pulses, the input of which is connected to the communication line, you turn to the first input of the counter and the input of the pulse generator, the output of which is connected to the first input of the first shaper of response pulses, the receiving unit of the clock pulses, the input of which is connected to the communication line, the output - from the second input of the counter, the output of which is connected to the second input of the first shaper of response pulses, is entered on. control point processing unit, controlled key zero-code decoder and time interval generator, the output of the synchronization unit is connected to the first input of the time interval generator, the first output of which is combined with the nepBfciM output of the reception unit and connected to the second clock generator input, the second output of the block the receiver is connected to the second input of the time line generator, the output of which is connected to the first input of the controlled key; the second input of which is connected to the communication output line - to the first input The processing unit, clock generator and clock generator outputs are connected to the second and third inputs of the processing unit, respectively, the first output of the processing unit is connected directly to the first input, the second output is connected to the second input through the second input decoder: at each controlled point, a memory block, a zero-code decoder, a second response pulse shaper and a control key are entered, the first memory block inputs are connected to signal inputs systems, the second input is with the output of the pulse generator, the first output is with the first input of the second shaper of response pulses, the second output is through a zero-code decoder with the first input of the control key, the output of the first shaper of response pulses is connected to the second input of the control key whose output is connected to the communication line, the output of the counter is connected to the second input of the second shaper of response pulses, the output of which is connected to the communication line. FIG. 1 shows the scheme of the proposed system; in fig. 2 is a timing diagram explaining the operation of the system. The system contains a group of controlled points (KP) 1 and point 2 of the control (PU), interconnected by a line 3 connection. Each gearbox 1 contains a clock receiving unit 4, a clock receiving unit 5, a pulse generator 6, a counter 7, a memory block 8, shapers 9 and 10 response pulses, a zero-code decoder 11 and a control key 12, system signal inputs 13. Control point 2 (PU) contains a terminal 14 Transformation block 14, a zero-code decoder 15, a synchronization block 16, a clock pulse shaper 17, a clock shaper shaper 18, a reception block 19, a time interval shaper 20, a processing block 21, a control key 22. The system is running in the following way . By the synchronization unit 16 of the PU 2, a sequence of pulses is continuously generated, which is fed to the inputs of the driver 17 clock pulses and the driver 20 time interval. On the basis of this sequence, a clock pulse generator 17 generates a clock pulse sequence T (Fig. 2), which goes further to the clock pulse generator 18 and a reception unit 19, the first of which is formed with a clock sequence C (Fig. 2), which comes along with a clock pulse sequence. pulses in the communication line 3, as well as to the input of the processing unit 21. As a result, a mixture of sequences of sync pulses and clock pulses is output to link 3 (Fig. 2). If signals from monitored objects do not arrive at inputs 13 of KP 1, then in each of KP 1 a pulse generator is constantly formed, the frequency and the duration of which is close to the following frequency and duration and clock pulses generated by PU 2. This sequence is fed to the inputs of the driver 9 response pulses and memory block 8, but in the absence of signals from the output ika 7, no signals on the outputs of these generators he formed. When passing through the link 3 of the next sync pulse, it is perceived by each of the PU 1, and at the output of the sync pulse reception unit 5 a pulse is formed, which, arriving at the input of the pulse generator 6, performs its synchronization, ensuring further its in-phase operation with the driver 11 pulses, as well as arriving at the installation (first) input of the counter 7.

The next clock pulse after the clock pulse is also perceived by each one of KP 1, and the pulse receiving block 4 forms a pulse arriving at the input of counter 7. The counters 7 in each of KP 1 have a different design, differing in the number of pulses that must be entered into the counter, after it has been reset to obtain a signal at the output of the counter 7. This number of pulses is taken as the sequence number of the CS.

Then, in KP 1, the signal at the output of counter 7 is formed after receiving the first clock pulse following the clock pulse, and this signal goes to the control inputs of the drivers 9 and 10 of the response pulses. In the absence of signals at the inputs 13 of this KP, there is no signal at the nepaoivf output of the memory block 8, due to which the response pulse shaper 10 is blocked. At the output of the zero-code decoder 11, there is a signal that unlocks key 12. A pulse is generated by the shaper 9 of the response pulse, which through the public key 12 enters the communication line 3 (Fig. 2).

This impulse enters reception unit 19, coters i, a pulse is generated at the first output, if at a previous temporary position a clock pulse from the output of the driver 17 clock pulses arrived at its first (clock) input, or at a second output if following the clock pulse the time position of the response pulse from KP 1 was not received. The pulse from the first output of the reception unit 19 is fed to the control (second) input of the driver 17 clock pulses, allowing them to form the next clock pulse.

The same response pulse directly on the link 3 is fed to the input of the key 22, which, however, due to the absence of an enable signal from the output of the time interval generator 20 is closed.

Similarly, the system proceeds after the formation of the second clock pulse with the difference that in this case the feedback pulse is formed by KP 2, etc.

If there are signals from monitored objects at inputs 13 one

From KP 1, a signal is generated by block 8 of the memory of this KP, causing a zero signal to be output at the output of the decoder 11 and a key 12, respectively, when the corresponding clock pulse (Fig. 2) arrives at this KP 1, the response pulse from the driver 9 of the response pulse to the communication line 3 and, accordingly, to the input of the reception unit 19 does not arrive, as a result of which a pulse is generated at the second output of the reception unit 19 that arrives at the second (start) input of the time delay generator 20, securing the unlocking of the key 22 for a time (FIG. 2). In addition, in connection with the absence of a pulse at the first output of the reception unit 19, permission to form the next clock pulse is not received into the driver 17 clock pulses.

In the gearbox 1, the pulses from the output of the generator 6 pulses arrive at the clock input of the memory block 8, the first output of which in this case

5, a sequence of pulses is formed (No. 3, 3, in the diagram P of FIG. 2), which is a time scan of the states of the signals at the inputs 13 of this KP. This sequence through the shaper-10 response-pulses enters the communication line 3 and from there to the receiving unit 19, which does not respond to the arrival of these pulses

5 to 22, open signal from the output of the shaper 20 time interval, to the input of the processing unit 21. Unit 21 processing on the basis of previously arriving at the second and third (targeted)

The 0 inputs of the clock and clock pulses form the address (number) of the KP 1, which transmitted information, and the number of the signal input of the 13 KP (or inputs), to which the signal from the controlled object arrived. This data from the first output of the processing unit 21 is transferred to the terminal conversion unit 14, where it is converted in a convenient form for registration or

0 for perception by the operator.

If there are at least one pulse in the sequence of pulses received by the processing unit 21 /, at the output of the decoder 15

5 of the zero code, no signals are generated.

Claims (2)

At the end of the time interval, a pulse arriving at the control input of the clock generator 17 is formed at the first output of the time interval generator 20, after which the next clock pulse is formed by this driver and the system continues. At the end of the formation of clock pulses in an amount equal to the number of monitored points 1- connected to line 3, point 2 of the control generates another sync pulse, and the system passes through the described Cycle. In case of failure of one of the CP 1 or break of the communication line 3, after the formation of PU 2 of the corresponding clock: the pulse of the response pulses from this CP does not reach the communication line 3. PU 2 this situation is also perceived as the transmission of information corresponding to 1 CMP 1 s the difference is that the code received by the processing unit 21 from the line 3 is zero. In this case, a signal appears at the output of the decoder 15 of the zero code - which will cause the formation in the block 14 of the final transformation of the sign of failure of this KP 1. Thus, in the proposed system, the amount of redundant information transmitted over the communication line, i.e. increases the information content of the system. Hi, therefore, the speed of data transmission from monitored objects is increased. The invention The temporal signaling remote signaling system, comprising a synchronization unit at the control point, the output of which is connected to the first input of the clock pulse generator, the output of the clock pulse generator is connected to the input of the sync pulse generator, the first input of the reception unit and the communication line, which are connected to the output of the sync pulse generator, and the second input of the receiving unit, the terminal conversion unit, at each controlled point. The receiving unit of the clock pulses, the input to The first is connected to the communication line, the output is connected to the first input of the counter and the input of the pulse generator, the output of which is connected to the first input of the first generator of response pulses, the receiving unit of clock pulses whose input is connected to the communication line output - to the second input of the counter, which output connected to the second input of the first response pulse generator, characterized in that, in order to increase the informativity of the system, a processing unit, a control key, a zero code decoder, and a time stamper are inserted into the control point interval, the output of the synchronization unit is connected to the first input of the time interval generator, the first output of which is combined with the first output of the receiving unit and connected to the second input of the clock generator, the second output of the reception unit is connected by the second input of the time interval generator, the output of which is connected to the first the input of the controllable switch, the second input of which is connected to the communication line, the output to the first input of the processing unit, the outputs of the clock generator and the clock generator x pulses are connected respectively to the second and third inputs of the processing unit, the first processing unit output is directly coupled to the first input, the second output - through zero code decoder to the second input terminal converting unit; on each monitored item a memory block, a zero code decoder, a second response pulse shaper and a control key are entered, the first inputs of the memory block are connected to the signal inputs of the system, the second input is connected to the output of the pulse generator, the first output to the first input of the second response shaper pulses, the second output through the zero-code decoder to the first input of the controlled key, the output of the first response pulse generator is connected to the second input of the controlled key, the output of which is connected to the communication line, stroke counter connected to the second input of the second momentum-shaper response owls, whose output is connected to a communication line. Sources of information taken into account in the examination 1.Ilin V.I. Telecontrol and telemetry. M., Energie, 1974, p. 335.. 2.Tutevich V.N., Telemechanika. M., Energie, 1973, p. 324-327, fig. 15-7, 15-8 (prototype).