SU798939A1 - Signalling device with transmission of alarm signals to central station - Google Patents

Description

The invention relates to telemechanics and can be used for centralized monitoring of objects. A well-known multichannel television signaling system with time division channels containing sealing devices, the signal inputs of which are connected to monitored objects, and the outputs through a communication line are connected to a receiver containing a pulse generator , shaper synchronizing and synphating pulses, pulse distributor, interface block, numeric code conversion unit, g a register, a null code decoder, two comparison units, an inverse numeric code conversion unit, a control unit, a KOHeiHoro conversion unit, an amplitude discriminator, a logic processing unit, a memory unit with a local control unit, a unit for generating a single signal, an alarm indicator. controlled valves 1. The disadvantage of this system is the use of blocks in its receiving device, the functional purpose of which is to organize control of the specified sequence of addresses of sealing devices, to restore this order when it is interrupted and to have special codes to organize this restoration. This is due to the fact that in this system a signal about a change in the state of an object belonging to a sealing device is generated and transmitted to the receiving device only when the state of at least one of the objects of the next sealing device changes. This increases the speed of the system, but complicates its design and reduces the intrusion. The closest in technical essence to the present invention is a signaling device with alarms to the central station, which contains controlled items, adventured to the control room, which contains a pulse generator, the output of which is connected to the first input of the element None by the first input of the OR element, which is connected to the input of the pulse distributor, the outputs soHitHHeHOMy with the first and the inputs of the encoder, the second inputs of which are connected to the first inputs of the decoder and the output of the switch, the input of the connected to the output of the logical element I, the output of the encoder is connected with the first input of the output line unit, the second input of which is connected to the second input of the OR element and the first output of the input line unit, the outputs of the decoder connected to the inputs of the memory blocks connected to the outputs the display unit 2. The disadvantage of this device is the low reliability of signals from the state of the objects of the controlled points, since there are no measures to protect the state codes of the objects being monitored from non-stationary impulse noise Mykh Punk comrade coming from them to the control station via a communication line. The signals are destined to the dispatcher and their distortions will lead to misinformation with undesirable consequences. The purpose of the invention is to increase the reliability of information transfer. The goal is achieved by the introduction of two triggers at the control point, a pulse counter, a second switch, a comparison unit, a receiver with accumulation of code combinations, the first inputs of which are connected to the outputs of the pulse distributor, the second input of the receiver with accumulation of code combinations is connected to the output element And, the third inputs - with the second output of the input line unit, and the fourth input of the receiver - with the accumulation of code combinations, the first input of the input line unit and the first input of the second key element This is connected to the first output of the first trigger, the output of the second trigger is connected to the second input of the element I, the first output of the output line unit is connected to the first input of the first trigger, the second input of which is connected to the third output of the input linear block, the first output of the receiver with the accumulation of code blocks The binaries are connected with the first input of the comparison circuit, with the second input of the second trigger and the first input of the pulse counter, the second input of which is connected to the output of the pulse generator, the output of the pulse counter is connected with the third the second is triggered, the second outputs of the receiver with accumulation of code combinations are connected with the second inputs of the decoder and the comparison unit, the outputs of the second switch are connected to the third inputs of the comparison unit and the fifth inputs of the receiver with accumulation of code combinations the outputs of the first collator, and the second with the outputs of the memory blocks, the third input of the decoder is connected to the output of the comparison unit. In addition, the receiver with the accumulation of code combinations contains three blocks of memory elements, three blocks of code comparison, a block of generating transfer signals, a decision block, a block of code matches, the outputs of the first block of memory elements are connected to the inputs of the decision block and the first inputs of the second block memory elements, the second input of which is connected to the First output of the transfer signal generation unit, the output of the second memory element block is connected to the first inputs of the third memory element block and the first comparison unit code o, the second output of the transfer signal generating unit is connected to the second input of the third block of memory elements, the outputs of which are connected to the first inputs of the second code comparison unit, the output of the decision block is connected to the first input of the code matching unit, the second, third and fourth inputs are connected to the outputs the first, second and third code comparison blocks, the output of the match block is connected to the first output of the receiver with accumulation of code combinations, the outputs of the first block of memory elements are connected to the second input The first and second blocks of the code comparison, the first inputs of the third code comparison block and the second outputs of the receiver with the accumulation of code combinations, the first input of which is connected to the first inputs of the first block of memory elements, the input of the transfer signal shaping unit, the third input of the first and second comparison blocks codes and the second input of the third block of code comparison, the second input of the receiver with the accumulation of code combinations is connected to the third inputs of the second and third blocks of memory elements, the third input of the receiver With the accumulation of code combinations, it is connected to the second inputs of the first block of memory elements, the fourth input of the receiver with the accumulation of code combines, the fifth inputs of which are connected to the fourth, are connected to its third and fourth inputs of the first and second code comparison blocks. inputs of the third block of code comparison. FIG. 1 shows an alarm device with alarms to the central station; .on. FIG. 2 shows an embodiment of the receiver 13. The device contains a dispatch point 1 and a controlled point; you 2 are connected in parallel to lines 3 and 4.

At the control room of the device, a generator of 5 pulses, element 6, the first switch 7, the encoder 8, the output line block 9, is located. input line unit 10, element OR 11, pulse distributor 12, receiver 13 with accumulation of code combinations, triggers 14, 15, pulse counter 16, second switch 17, decoder 18, memory block 19, display unit 20 and block

21 comparisons.

The receiver 13 contains the first block

22 memory elements, second and third blocks 23 and 24 of memory elements, blocks 25-27 of message code comparison, decisive block 28, intended to determine that the code enters the allowed message area, block 29 of matching codes, block 30 of generating transfer signals.

The device works as follows.

The pulse from the output of the generator 5, formed with a period not less than the time interval of one survey of one monitored item 2, arrives at the first input of the element And b when there is a single level signal from the output of the trigger 15 at the second input of this element, the output of the element 6 appears the signal arriving at the input of the commentator 7 and on the first, the input of the receiver 13. On the leading edge of this signal, the switch 7 switches to the next steady state, which displays the address of the next controlled point, and the cumulative receiver 13 is established in the initial state corresponding to the readiness to receive information from this regular controlled point.

The signal from the output of the generator 5 is fed to the first input of the element OR 11 and the second input of the counter 16. This signal passes to the output of the element OR 11 and starts the distributor 12 pulses, and the counter 16 switches to the steady state corresponding to the arrival of the first pulse to its second input . By the pulse appearing at the first input of the counter 16, it is set to the initial (zero) position. By the time of starting the distributor 12 pulses in the switch 7, the next address of the controlled point 2 address is formed, which from its outputs in parallel goes to the address inputs of the encoder 8, the decoder 18 and the switch 17. The outputs of the distributor 12 are connected to the synchronization inputs of the encoder 8 and the receiver 13. By transmitting signals from the distributor 12, the parallel address code from the switch 7 to the encoder 8 is converted into a serial

the code that comes from the output of the encoder 8 goes to the first input of the output line unit 9. In the absence of a inhibit signal at the second input of the output block 9, its first code goes to the communication line 3, .a from the second output to the first input of the trigger 14. Code the addresses are constructed in such a way that it always starts with a single signal used for in-phase triggering of distributors 12.

The trigger 14 has stable conditions such that when a single signal arrives at its first input from the second output of the output

s of block 9, a zero level signal is generated at the output of the trigger 14, which arrives at the second input of the input line unit 10, the first input of the trigger 15 and the second input of the receiver 13. This signal prohibits the operation of some nodes of the receiver 13, as well as the passage of signals from the communication line 4 to the second and third outputs of the input line unit 10, and the output of the trigger 15 generates 5 with a signal applied to the second input element And 6, prohibiting the passage of pulses from the generator 5 to the output element And 6.

After receiving the address code, from line 3 by all controlled items 2, the answer forms only the one in whose memory, for example, in its memory. address decoder 18 stores the address that matches the received one. Code

The 5 response of the controlled item 2 consists of the response impulse, which has the meaning of cavitation, i.e. confirmed that the request by this controlled point was received, and the content part that displays the state of the objects of this controlled point 2. The response impulse comes through communication line 4 to the first input of the input linear block 10 of the control room 1. As a result,

5, a signal arriving at the second input of the trigger 14 appears at the first output of block 10. The signal at the output of element 11 OR forms a new signal at the second output.

0 inputs of block 10 and receiver 13. This signal permits the passage of signals from line 4 to the second and third outputs of block 10 and enables the operation of the corresponding receiver blocks

5 13. At the first pulse of the content part of the response code of the monitored item 2, a signal appears at the second output of block 10, which through the element OR 11 starts the distributor 12 and blocks the output linear block 9 through the second input, so that when the distributor 12 is operating line reception. 3 pulses from the output of block 9 will not go. The blocking of the output line block 9 stops on the falling edge of the pulse applied to the third input of block 10 from the last output of distributor 12, the value of the signal at the second output of block 10 changes. Serial code of message of controlled point 2 and link 4 enters input line block 10 on the information inputs of the receiver 13, it is received by it in accordance with the synchronization signals from the outputs of the distributor 12. In accordance with the address code from block 7 to the address inputs of the cocculator 17, this block is under To the receiver, 13 outputs of the memory blocks 19, which display the state of the requested monitored item 2, are stored in this memory according to the results of previous demands of this monitored item 2 as decided by the receiver 1: 1. The algorithm of operation of the receiver 13 is such that after the end of the reception of code coking from the communication line, this code combination is processed taking into account the information (code combination) supplied to the receiver 13 from the memory blocks 19 of the control tower 1. If the receiver 13 decides to output the result processing (generated information) from the receiver 13, then a single-level signal appears at its first output, in accordance with the first trigger 15 enters a state in which the output signal allows the passage of the next th pulse output from the oscillator 5 on the input of the switch 7, which means that transition with the work on a new next address. In accordance with the one ' 1 signal, at the first output of the receiver 13, the output of the comparison unit 21 is outputted therein of the codes outputted from the receiver 13 and the state code of the monitored item 2 supplied to it from the memory units 19 via the switch 17.If Since the codes are the same, then a unit level signal does not appear at the output of the comparison unit 21, if there is no match, then a unit level signal appears on the third input of the de-infector 18. In accordance with the ajupeca code present on the first inputs of the decoder 18, the information second the output of the scrambler 13, which goes to the internal inputs of the distributor 18 passes to the first inputs of those memory blocks 19, KOTOjaje correspond to the address on the first inputs of the decoder 18, a. The signal from the third input of the decoder 18 passes through these same blocks of memory 19. The signal at the second inputs of the memory blocks 19 is a permissive (synchronicity) change in their state and in accordance with the signals at their first inputs. If there is no decision to output the processing results from the receiver 13, then the absence of a single signal at its first output does not allow the trigger 15 and the element 6 to pass the next pulse from the output of the generator 5 to the input of the switch 7. Therefore, the next pulse from the output of the generator 5 will only start operation of the distributor 12 and the request of the monitored item 2 is repeated at the old address, having a duct in the switch 7. When the monitored item 2 responds again with a signal of cavitation, a signal is generated at the third output of the block 16, which It sends the trigger 14 and the signal from its output enables the operation of certain nodes in the receiver 13. Next, the state code of the monitored item 2 is re-received from the communication line 4. At the time, the situation corresponds to the end of the repeated reception of the state code of the monitored item 2, the receiver 13 generates a solution based on the code combinations accumulated in the receiver 13 according to the results of consecutive polls of the same controlled item 2 and entering the receiver 13 from blocks 19 in accordance with the address chosen tyvae1 "1m unit 7. In accordance with vyrabotannBhm vtsdaet solution receiver 13 at its first output signal or the zero level of the unit and further work is constructed in accordance with these signals. If and at repeated polls, the receiver 13 generates solutions in which at its first output there is always only a zero signal, which is equivalent to prohibiting the transition to work at a new address from the receiver 13, then when the specified number of repeated polls of the same controlled point 2 is reached The signal at the output of the pulse counter 16, according to which at the output of the trigger 15, one Hbtil signal appears independently of the signals at its other inputs and this ensures the resolution of the second input of the AND element for the passage A signal from the output of the generator 5 pulses to the co-fator 7 and to the fourth input of the 13. The reversal of the counter 16 is performed by the falling edge of the pulse at its second input, and the trigger 15 is set to zero at the leading edge of the pulse at its first the entrance. The receiver 13 is set to the initial state corresponding to the readiness to receive information from another controlled point 2. The signal at its fourth input from the output of the element I is received. When a message is received from the input line unit 10 of the control room 2, signals are received at the information inputs of the receiver unit 13 , to the synchronization inputs of which are connected the respective outputs of the distributor 2 pulses of the dispatch point 2, and to the control inputs - the output of the trigger 14 of the control point 2 connected to the second To the common input of the receiver 13 so that the message message received from the output of block 10 of control station 2 is received, stored, then converted into a parallel code and fed from block 22 to the inputs of blocks 25-29 and to the information outputs of the receiver 13 In block 25, a comparison is made of the codes of messages received from block 22 and from blocks 19 of the control room 2 via KONtttyTaTop 17 in accordance with the address from block 7 arriving at the address inputs of block 17 of the control room 2. Comparison signal odov outputted from block 25 if there signgsha time decision at the second input of the receiver 13, whence it is applied to blocks 25a and at block 30, block 29 and the output signal which corresponds to the distributor such that following the operation of the distributor after the last discharge PRIE code. matching the codes, supplying & wasp to block 25, at the appropriate time, the signal from its output, applying to the input of block 29, passes through block 29 to the first output of receiver 3. This is possible when the enable signal arrives at the input of block 29 from the output of block 28, which determines the belonging of the code received from the line to block 22, to the set of allowed codes. Thus, block 29 implements the logical function 3 OR - 2 AND, where the signals from the outputs of blocks 2527 and OR from the output of block 29 and from the second input of receiver 13 work on OR. (After the reception of the message code in block 22 at the first polling of monitored item 2 in the corresponding time slot, we have a match in block 25 of the received code and code submitted from block 19, then a single signal will pass to the output of block 25, which is the signal on the first output of receiver 13. This sngsh prepares the control station 1 to work at the following address. If you In Scheme 25, after the first survey of the monitored item 1, they coincide, they do not coincide in blocks 26 and 27. Since going to work at a new address, in this case, by going to the address of the controlled item 2, the signal from the generator 5, passed to the output of the element Ib and to the first input of the receiver 13, and from there to the reset inputs of blocks 23 and 24, zero code combinations are set in these blocks 23 and 24. The code at the output of block 22 is different from zero, since this is a forbidden code combination. If at the first interrogation a null combination is recorded in elements 22, for example, due to code suppression by an interfering signal, then the signal of matching the codes in circuits 26 and 27 with the code at the output of elements 22 will not pass to the output of the circuit of block 29, since the enable signal does not exceed block 29 if there is a zero code at its output from the outputs of elements 22 of the drive. If the codes do not match after the first interrogation, due to a change in the state of this controlled item, the same controlled item is re-polled. When the signal of -cavitation is received from it, a single signal is generated at the second input of the receiver 13, on the leading edge of which the transfer signal generator 30 outputs a signal to block 24 and with some delay to block 23 which is written to the memory cells of these blocks of codes present on their inputs: in block 24, the code is written from the outputs of block 23, and in block 23 from the outputs of the storage elements 22. Thus, the code accumulator elements 22, block 23 and block 24, and before receiving the message of the re-poll result, the result of the first poll is transferred to block 23 from elements 22, and the result of the re-poll is entered into the drive elements 22. Codes after the first poll did not occur in cxeite of block 25 due to a change in the state of the controlled point, then after the second poll, in the absence of distortions of interference codes, we have a coincidence of codes in b / w 26, whose iB compares the results of the first poll from block 23 and : the result of the second survey from the outputs: block 22. If one of the codes is distorted by interference, then we get a match only after the third survey or in block 26, or in block 27, depending on the situation with the distortion of interference codes. When the state of a controlled item changes, we get no earlier than the result of the second survey. The proposed design leads to an increase in the reliability of the decision that the receiver needs.

Claims (2)

1. An alarm device with alarms to a central station containing monitored points connected to a control center consisting of a pulse generator, the output of which is connected to the first input of the AND element and the first input of the OR element, the output of which is connected to the input of the pulse distributor, the outputs of which are connected to the first inputs of the encoder, the outputs of the first switch are connected to the first inputs of the decoder and to the second inputs of the diffuser, the input of the switch is connected to the output of the AND element, the output shi The rator is connected to the first input of the output line unit, the second input of which is connected to the second input of the OR element and the first output of the input line unit, the outputs of the decoder are connected to the inputs of the memory blocks, the outputs of which are connected to the display unit, characterized in that Relevance of information transfer, entered into the device at the control room. paragraph two flip-flops, pulse counter, second switch, comparison unit, receiver with accumulation of code combinations, the first inputs of which are connected to the outputs of the pulse distributor, the second input of receiver with accumulation of code combinations connected to the output of the And element, the third inputs with the second output of the input line block, and the fourth input of the receiver - with the accumulation of code combinations, the first input of the input line block and the first input of the second key element are connected to the first output of the first trigger, the output of the second. the trigger is connected to the second input of the element I, the first output of the output line unit is connected to the first input of the first trigger, the second input of which is connected to the third output of the input line unit, the first output of the receiver with accumulation of code combinations to the first input of the comparison unit, to the second input , the second trigger and the first input of the pulse counter, the second input of which is connected to the output of the pulse generator, the output of the pulse counter is connected to the third input of the second trigger, the second outputs of the receiver with the accumulation of codes These combinations are connected to the second inputs of the decoder and the comparison unit, the outputs of the second switch are connected to the third inputs of the comparison unit and the fifth inputs of the receiver with accumulation of code combinations, the first inputs of the second switch are connected to the outputs of the first switch, and second, outputs to the outputs memory blocks, the third input of the decoder is connected to the output of the comparison unit. 2. The device according to claim 1, wherein the receiver with the accumulation of code combinations contains three blocks of memory elements, three blocks of code comparison, a block of generating transfer signals, a decisive block, a block of code matching, the outputs of the first block of elements the memory is connected to the inputs of the decision block and the first inputs of the second block of PS1m; the second input of which is connected to the first output of the transfer signal generating unit; the output of the second block of memory elements is connected to the first inputs of the third block of memory elements and The second code comparison block, the second output of the transfer signal shaping unit is connected to the second input of the third block of memory elements, the outputs of which are connected to the first inputs of the second code comparison block, the output of the decision block is connected to the first input of the code matching block, the second, third and fourth inputs of which are connected with the outputs of the first, second and third code comparison blocks, the output of the code matching block is connected to the first output of the receiver with the accumulation of code combinations, the outputs of the first block of memory elements connected to the second inputs of the first and second code comparison blocks, the first inputs of the third code comparison block and the second outputs of the receiver with accumulation of code combinations, the first input of which is distributed to the first inputs of the first block of memory elements, the input of the transfer signal generating unit, the third inputs of the first and the second code comparison block and the second input of the third code comparison block; the second input of the receiver with accumulation of code combinations is connected to the third inputs of the second and third blocks of elements So, the third receiver input with the accumulation of code combinations is connected to the second inputs of the first block of memory elements, with its third and fourth inputs of the first and second code comparison blocks and the third input of the third code comparison block is connected, the fourth input of the receiver with accumulation of code combinations, fifth the inputs of which are connected to the fourth inputs of the third unit of comparison. I Sources of information taken into account during the examination 1. Authors certificate of the USSR 519754, cl. G 08 C 19/28, 1974. 2. Authors certificate of the USSR, 412620, cl. G 08 C 19/28, 1971 I (prototype). ZSH TT ff, Oh  U | L «J U f2, t Ш He / f 2ff „T T ..j Fu & / J P sh but 2