SU809299A1 - Information transmitting device - Google Patents

Description

The proposed invention relates to telemechanics and.- can be used in digital television signaling systems with time division signals. Devices for transmitting information are known, the principle of action of which is based on alternate, coordinated (synchronous and in-phase) connection of a communication channel to individual command and signal circuits, in dispatching and controlled equipment with the help of distributors switching the corresponding circuits. In this case, usually the television signaling in such systems is carried out continuously (cyclically). A device for remote signaling with time division of signals is known, which contains a clock generator, an information distributor, a distributor of monitored points, and linear nodes at the control room. Logic elements, control keys, code converter, indication and alarm units, at the control points - information distributor, clock generator, logic elements and linear nodes. Signals transmitted from the control room are received at all controlled points. This series of signals contains synchronization pulses, a syncing pulse, an address signal of the polled controlled point. After receiving the address, the controlled item begins to issue at certain intervals of the signal distributor. Signals about the status of alarm sensors connected to it, which are received at the control room. At the end of the polling cycle, the polled control station sends a special signal to the control room, using which at the dispersion center you can check the synchronism in the operation of control center control valves and controlled point 1. One of the drawbacks of such a device is the large power consumption of the telemechanics equipment monitored points, since the transmitter of the device must be turned on at the time of polling each source of information. The closest in technical essence to the present invention is a device for transmitting information.

containing at the control station: a block of addresses whose output is connected to a transmitter, a receiver whose output is connected to the input of a decoding unit, the first output of which is connected directly to the first input of the output unit of the information unit, and the second output through an error selector with the input of the address block and the second input information output unit, at a controlled point: a receiver, the output of which is connected to the input of the address digital phasing unit, the output of which is connected to the first inputs of the transmission control unit, the input information block of the control unit and the retransmission unit, the output of which is connected to the second input of the information input unit, the outputs of the transmission control unit are connected to the second input of the retransmission unit and the third input of the information input unit, the fourth input of which is connected to information sources, respectively; the first output of the input unit is connected to the second one the input of the control unit for transmission of the second output is through a decoding unit with the input of the transmitter, the output of which is connected to the input of the receiver of the control room, and the input of the receiver is connected to swing control station transmitter. This device implements the most widely used method of ensuring the reliability of information transmission, the automatic error request method (LZO) on the reverse channel 2. The disadvantage of the known device is its complexity due to the presence of a complex error selector unit at the control room, and transmission control unit and retransmission unit. To ensure the reliability of the transmission, the decoding unit also requires complexity due to the inclusion of a redundancy input node in the information code. the disadvantages of this device. should also include the low accuracy of the transmitted information.

The purpose of the invention is to simplify and increase the reliability of the device.

The goal is achieved by the fact that in a device for transmitting information, which contains a receiver at the control station, the output of which is connected to the first input of the decoding unit, the first outputs of which are connected to the information inputs of the information output unit, the address block and transmitter, at each controlled point, the information input unit whose inputs are connected to information sources, and outputs to the first inputs of the decoding unit, transmitter and receiver, receiver input and transmitter output of each monitored item that are connected via

The corresponding communication channels, respectively, with the output of the transmitter and the input of the receiver of the control room, are entered at the control room, the information request unit. and the analyzer. response, the output of which is connected to the control inputs of the address block (information output block and information request block, the outputs of which are connected to the second inputs of the decoding block, the second output of which is connected to the transmitter input, the third output of the decoding block is connected to the combined input of the response analyzer and synchronizing the input of the address block whose outputs are connected to the third inputs of the decoding block and the address inputs of the information output-and block, the outputs of which are connected to the fourth inputs of the block ekodirovani, each

In a controlled point, a block for receiving requests for information, a block for lights, a comparison block and an address key, whose outputs are connected to the second inputs of a decoding block, are entered.

5, the first output of which is connected to the first input of the comparison unit, the second output to the first input of the information request receiving unit, the outputs of the comparison unit and the information request receiving unit are connected to the corresponding inputs of the response unit whose output is connected to the transmitter input, the output of the receiver is connected to the second inputs Comparison unit and information request receiving unit.

5Also, 6jrioK. request information, is performed on the code combination generator.

The drawing shows a block diagram of a device for transmitting information.

0 The device contains at the control station 1 a decoding block 2, a block 3 of information output, an analyzer of 4 responses, a block of 5 addresses, a block. 6 request information, receiver 7 and

5, the transmitter 8, at the controlled point 9, the decoding unit 10, the address key 11, the information input block 12, the response block 13, the comparison block 14, the information request receiving block 15, the receiver 16, the transmitter 17, the communication channels 18 and 19, the sources 20 information.

Decoder blocks 2 and 10 convert the information coming in the parallel code into the serial code. At the same time, they can convert serial code into parallel code. Both units operate synchronously and in phase. Block 5 addresses sets the polling sequence

0 controlled items. In this case, signals appear alternately at its outputs. Block 5 is synchronized with the last output of block 2. When the signal from the analyzer 4 answers to the control input, block 5 of addresses stops working and remains. The information output unit 3 contains a series of memory cells in which the signals output from unit 2 are overwritten. In the output circuits of the information output unit 3, there are output elements for controlling the indicators. The address inputs of the information output unit 3 are intended to distribute the received information by cells in accordance with the controlled point being surveyed. - When a signal is detected at the control input, the signals from the output of block 3 are removed, and overwriting of new information is prohibited. The 4 response analyzer is pre-assigned to receive a signal, passing it from the monitored point at the last clock of the interrogation cycle. An information request unit, when a signal occurs at its control input, generates a call signal of the controlled point for full transmission. The information input unit 12 is the matching link between the source: information vI 20 and decoding unit 2. In the address key 11, the dialing code assigned to this item is controlled. In comparison block 14, the pulse sequence from the output of receiver 16 and the pulse sequence from the first output of block 10 are compared. A signal appears at least in one sign at the output of block 14. This state is maintained until the end of the cycle for accessing this controlled item. At the beginning of the new cycle, the comparison unit 14 comes to its original state. The information request receiving unit 15 is included in the output at the output of the receiver 16 of a sequence of pulses containing information about the address of the called controlled point and information request. Response block 13 has two control inputs. When there is a signal at the input connected to the comparison unit 14, the response unit 13 at the end of the poll generates a signal which, via the transmitter 17, enters the communication channel 19. If there is no signal at this input, the signal transmission at the end of the cycle is terminated. In the presence of a signal at the input connected to the information request receiving block 15, the serial code from the second output of block 10 enters the transmitter input through the response block 13. This code carries information about the state of information sources connected to the input of the information input block 12. The device works as follows. The address signal of a certain controlled item arising on one of the inputs of the address block 5 is fed to a specific address input of the information output block 3 and is one of the parallel inputs of the decoding block 2. This signal in the output information block 3 connects output devices related to the polled controlled item. The signals from the output of the information output unit 3 are fed to the parallel inputs of the decoding unit 2, where, together with the address signal, they are converted into a serial code, which is removed from the serial output of the unit 2 and fed through the transmitter 8 and the communication channel to the input of the receivers 16 of all monitored points 9. Thus, the communication channel will receive a sequence of pulses containing information about the address of the polled controlled point and about the state of the output signaling devices related to this monitored at item. This sequence of pulses at Xc1 each controlled point by comparison unit 14 is compared with the sequence of pulses generated by block 10, to the parallel (second and first) inputs of which the address key 11 and information input unit 12 are connected. Since the sequence of pulses transmitted from the control point contains the address code of the monitored point, the outputs of blocks 14 compare all of the controlled points except the called one, while checking the address code of the address, signals will disappear, thus preventing the operation of blocks 13 of responses. And only at the called controlled point at the output of comparison unit 14 the signal will be saved if all the other elements of the received sequence coincide unambiguously with all elements of the pulse sequence generated by block 10 in accordance with the state of information sources 20 connected to information input unit 12. In this case, at the end of the polling cycle of this monitored item, an output appears at the output of response block 13, which through transmitter 17, communication channel 19 and receiver 7 of control room 1 arrives at the first (serial) input of block 2. The output signal The analyzer 4 answers are absent, and the signal at the last output of block 2, arriving at the synchronization input of block 5 of addresses, transfers it to the state in which the call is made to the communication of the next monitored item. In the future, the work of the scheme is similar. This is how the state of the output elements is checked by the information output unit 3 of the control room 1, and hence the state of the display devices connected to the output of the information output unit 3, the state of information sources 20 connected to the monitored item through the information input unit 12.

In the event that at least one element in the sequence of pulses transmitted from the control room and formed by the decoding unit 10 of the controlled point does not match, the output of the comparison unit 14 is removed and the response unit 13 does not generate a response pulse. In this case, at the control station, at the last cycle of the polling, the analyzer of 4 responses turns on, blocking the block of 5 addresses into the polling mode of the next monitored point, and in the non-cycle, the information request block 6, which affects the glare 2, will generate the information request signal. At the same time, the signal from the analyzer of 4 responses, affecting the control input of the information output unit 3, will prohibit the transmission of information on the output and output elements of the information output unit 3 in this cycle. In this case, the channel 18 of communication through the transmitter 8 will receive a sequence of pulses containing only the address of the controlled point and the request signal information. At the controlled point 9, due to the fact that the sequence of pulses, the transfer from the control station, does not contain information about the state of the monitored sources 20 and information, the signal will disappear at the output of the comparison unit 14. And since the request for information is contained in this sequence, the request information receiving block 15 and the 1pc block of the responses 13 via the transmitter 17 send a series of pulses from the serial output of the decoding unit 10 to the reverse communication channel 19, the source state information 20 information. In this series there will be a pulse of the end of the survey cycle. This series of pulses through the receiver 7 enters the block 2, where it is converted into an SMS block, the value of which at the end of the transmission cycle is entered into the information output block 3. And the last pulse of the cycle is about (phos will turn off the analyzer 4 answers and switch the block of 5 addresses to the next position, at which the correspondence of the state of the output elements of the 3 output information block and the sources 20 of the information of the next monitored item is checked.

If, as a block 6 for requesting information, use a code combination generator that generates various C or practically possible combinations of the state of the information sources 20, then if the analyzer 4 detects a response mismatch in the state of the output elements of the information output block 3 and the corresponding information sources 20 on For any controlled item, this code combination generator starts cyclically.

to produce a variety of combinations before receiving a response from the controlled item in accordance with. In this embodiment, the device is further simplified apatatura

due to the possibility in this case to exclude the block 15 of receiving the request for information on the controlled item. In addition, since the controlled item comes out in any situation

transferring only once per cycle; power source power requirements will still be reduced.

Claims (2)

1. A device for transmitting information, containing at the control room a receiver, the output of which is connected to the first input of the decoding unit, the first outputs of which are connected to the information inputs of the information output unit, the address block and transmitter, at each controlled point the information input unit, the inputs of which are connected to information sources, and the outputs with the first inputs of the decoding unit, the transmitter and receiver, the input of the receiver and the output of the transmitter of each the controlled point is connected through appropriate communication channels, respectively, with the output of the transmitter and the input of the receiver of the control room, characterized by that, in order to simplify and enhance. device’s reliability, the information request block and response analyzer, the output of which is connected to the control inputs of the address block, information output block and information request block whose outputs are connected to the second inputs of the decoding block, the second output of which is connected to the transmitter input, the third output of the decoding block is connected to the combined analyzer input and the synchronizing input of the address block whose outputs connected to the third block inputs the decoding and address inputs of the information output block, the outputs of which are connected to the fourth inputs of the decoding block, a block is entered at each controlled point Information request, response block, comparison block and address key, the outputs of which are connected to the second inputs and decoding block whose first output is connected to the first input of the comparison block, the second output to the first input of the information request receiving block, the outputs of the comparison block and the information request receiving block they are connected to the corresponding inputs of the response block, the output of which is connected to the input of the transmitter, the output of the receiver is connected to the second inputs of the block compared to the NIN and the block for receiving information requests. 2. The device according to claim 1, characterized in that the information request block is executed on the generator of the combinations CODE9. Sources of information taken into account in the examination - 1. USSR author's certificate W204903, cl. G 08 C 15/06, 1966. 2. USSR author's certificate No. 488245, cl. O 08 C 19/28, H 04 L 17/00, 1974 (prototype).