SU1120502A1 - Multichannel device for switching on stand-by radio stations - Google Patents

Description

by the pulse driver, the output of the backup radio station is connected to the third element I and connected via the input of the second control unit, the register with the input of the decoder, and the output

1120502

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The invention relates to automation and electronics and is intended for automatic reservation of radio stations of multichannel communication systems.

A multi-channel device for switching on backup radio stations is known, which contains a controlled switch and, in each channel, serially connected tuning frequency code encoder, tuning frequency code storage register, radio station type switch, tuning frequency code decoder, radio station frequency tuning unit, and exciter whose output is connected with the cipher-C input of the Ipopa tuning frequency code, the signal inputs of the controlled switch are connected to the outputs of the tuning frequency code storage registers o novnyh channels output via the selector switch is rabrty backup station coupled to the tuning frequency code decoder, and control inputs - outputs of the analyzers with basic .kanalovfl failures.

The disadvantage of such a device is the possibility of its use only for radio stations having a code electronic frequency tuning, in the absence of which it is necessary to replace the pathogens present in the radio station, which leads to a sharp rise in the cost of system I.

The closest technical solution to the invention is a multichannel device for switching on redundant radio stations, containing in each main channel a main radio station, the output of which is connected to the input of the control unit, the outputs of all control units are connected to the inputs of the W and the address inputs of the memory of the setting codes, the read input which is connected to the output of the OR element, and the bit outputs to the inputs of the register, and in each backup channel - a serially connected decoder, an electronic rearrangement unit Costs and a backup radio station, the first, second, third And elements and the trigger, the direct output of which is connected to the second inputs. The first and third elements are And, the inverse output is with the second input of the second element And, and the single input is the output of the second element And, the first input of which is connected to the first input of the first element And, the output of the third element And is connected to the input of the decoder, and the first input is from In the first register, the first input of the first element I is connected to the output of the first element of the previous channel, and the first input of the nepBoi o element I of the first backup channel is connected to the output of the IZh23 element.

A disadvantage of the known device is the lack of monitoring of backup radio stations. In this case, firstly, due to the lack of information about the health of the backup radio station, the failed primary radio station can be replaced, which is also in a failure state, which will lead to a failure of the communication channel and disruption of the communication session. Secondly, if the main radio station fails and the reserve one is replaced with a serviceable one, the latter will fail after some time, however, even if there are other free reserve radio stations, the failed reserve radio station will not occur, since the failure will not be detected, which will also lead to failure a communication channel and a message session. All this leads to a decrease in the reliability of the device and the multichannel redundant system as a whole.

The purpose of the invention is to increase the reliability of device operation by introducing monitoring of backup channels and their mutual backup. This goal is achieved by the fact that a multichannel device for switching on backup radio stations, containing a fixed memory block, the read input of which is connected to the output of the first OR element, {Register, and in each main channel - the first control unit, the first control units Connect the yen's outputs to the inputs of the first OR element and to the address inputs of the permanent memory unit, and in each backup channel - the first, second and third elements And, the trigger and connected in series d an encoder, a frequency tuning unit and a backup radio station, the direct trigger output is connected to the first inputs of the first and third AND elements, and the inverse output is connected to the first input of the second EJ: I element And, the second input of which is connected to the second input of the first AND element of the given channel and for all channels, with the exception of the first, - from the output of the first element AND of the previous channel, a block of RAM, the second, third and fourth elements OR are entered, and in each backup channel - the pulse shaper, the fourth element AND, the fifth and sixth elements The shty and the second control unit, the write input of the ram block is connected to the output of the first OR element and to the first input of the second shsh element, the bit inputs to the bit outputs of the permanent memory unit and to the first input of the third element OR, read input - with the second input of the second element OR, and with the output of the fourth element OR, the bit outputs are connected to the second input of the third element OR, the address inputs to the outputs of the fifth elements OR of all backup channels, the output of the second element OR is connected to the second inputs of the first and The second element AND the first backup channel is the output of the third element OR is connected to the second inputs of the third elements of all backup channels, the inputs of the fourth element OR are connected to the outputs of the fourth elements AND all backup channels, and in each backup channel the first input of the sixth element OR is connected to the output of the second element And, the output is with a single trigger input, the second input is with the output of the second control unit and with the first input of the fourth element I, the second input of which is connected to the direct output of the trigger and with the input l pulse, and the output - to the first input of the OR p, a second input coupled to the output of the pulse output of the third AND gate is connected through the register to the input of the decoder, and the output Res rvnoy station connected to the input of the second control unit. The drawing shows a functional diagram of a multichannel device for switching on redundant radio stations. The device contains the main radio stations 1, the first control units 2, the permanent memory unit 3, the operative memory unit 4, the first 5, the second 6, the third 7 and the fourth 8 elements OR, the first 9, the second 10, the third 11 and the fourth 12 And elements, sixth elements OR 13, triggers 14, registers 15, decoders 16, frequency tuning blocks 17, backup radio stations 18, second control blocks 19, pulse formers 20, fifth OR 21 elements, and busy channel information inputs 22. The principle of operation of the device is as follows. When a failure of the main radio station occurs, a free backup radio station is selected and tuned to the frequency of the tuned JJQ tuning frequency code recorded in the permanent memory unit at the address of the failed main radio station. At the same time, this code is copied into the block RAM to the address of the selected backup radio station. This allows, in case of failure of the latter, to rebuild another free backup radio station using the recorded code. If a backup radio station that is not included in the work fails, this backup channel is blocked in order to prevent it from being put into operation. Thus, the system uses two memory blocks: a constant for recording frequency tuning codes of the main radio stations and an operational one for recording frequency codes for tuning the radio stations included in the operation of backup radio stations. The system can have three options for radio station failures, according to which it is convenient to consider the operation of the device in four modes J112 1) in the absence of system failures; 2) in case of failure of the main radio station and the health of all backup; 3) in case of failure of the backup radio station, which has already replaced the previously failed primary radio station; 4) in case of failure of the standby radio station, which is in standby mode (free backup radio station). Consider consistently all possible modes of operation of the device. The operation of the device in the absence of failures in the system. With the health of all the main 1 and reserve 18 radio stations there are no signals at the outputs of blocks 2.19 of control, they are not present at the outputs of the other elements either. In block 3 of the permanent memory, for each address, the code of the tuning frequency of the corresponding main radio station is recorded. All backup radio stations are free; therefore, the inputs 22 of the reserve channels are given signals that set the triggers 14 to the zero state. In block 4, there is no RAM in all the addresses of the record. Operation of the device in case of failure of the main radio station and the health of all backup radio stations. In case of failure of any of the main radio stations 1, a signal appears at the output of its control unit 2, which is fed to one of the address inputs A of the permanent memory unit 3. At the same time, a failure signal through the OR element 5 is fed to the matching input C of the permanent memory unit 3. Since the address of the tuning frequency of the corresponding main radio station is recorded at each address, a signal appears on the bit outputs P of memory block 3 with the tuning frequency code of the failed main radio station, which is fed through element OR 7 to the first input of the AND 11 elements of all backup channels. At the same time, the signal of failure from the code of the signal OR 5 enters through the SHSh 6 element to the first input of the AND 10 element of the first backup channel. Since the initial trigger 14 is set to the zero state, its inverse output and, consequently, the second input of the AND 10 element is affected by the signal of the logic switch. The signal levels at the outputs of the AND 10 element coincide, a signal appears at its output, which, passing through the OR element 13, switches the trigger 14 to the one state. At the direct output of the trigger, a signal appears that opens the Hit element. The latter passes, the signal of the frequency code settings to the input of the register 15 and further - to the input of the decoder 16 and the block 17 frequency tuning. The latter, in accordance with the received code, rebuilds the backup radio station 18 to the frequency of the failed primary radio station. If a second failure occurs on the discharge outputs of the block 3 of the permanent memory and, accordingly, at the output of the element OR 7, the frequency code of the second failed radio station is received. The signal of failure from the code of the element OR 5, having passed through the element SHSh 6 and the element AND 9 of the first backup channel, since at its second input the enabling signal from the direct output of the trigger 14 acts, will go to the first input of the element AND 10 of the second backup channel. will flow (similarly to what has been described: trigger 14 will switch to one state, AND I1 will open and the tuning frequency code will register 15 and the decoder 16 will go to the electronic frequency tuning unit, which will rearrange the radio station 18. When If the next failure occurs, the process will be repeated and the reserve radio station will be rebuilt to the failed main frequency. If this releases one of the previously used backup radio stations, then it will replace the failed one again at the next failure. Let, for example, the first reserved radio station be released. On the information input 22 on the zero input of the trigger 14 of this channel, a signal is transmitted that causes the trigger to be in the zero state, which characterizes the channel idleness. The forward trigger output is affected by a low level signal, which closes the channel 9 element, preventing the next failure signal from launching other free backup radio stations, and the inverse trigger output is acted upon by a high level signal, which opens the 10 element, thus passing through him the next failure signal with the subsequent restructuring of the backup radio station of this channel in the manner described. In case of failure of the main radio stations, another process proceeds in parallel with the described process. With each failure of the main radio station 1, the signal from its control unit 2 through the element OR 5 is fed to the input Sn of the recording of the operating memory unit 4. The bit-frequency code of the tuning from the bit-outputs of the block 3 of the permanent memory is written to its bit inputs, which is written to the address A, to which the resolution signal from the selected backup channel is given. This signal is removed from the direct output of the trigger 14, on which it is formed after the backup channel is put into operation, and is fed to the address inputs through the driver 20 and the OR 21 element. The need for a body 20 is caused by the following. When the backup channel is turned on at the direct output of the trigger 14, a high level signal is generated, which remains constant throughout the backup channel operation. With simultaneous operation of several backup channels, such signals are present simultaneously at the outputs of the triggers of all these elements. If in this case there is a need to read or write information in the RAM 4, simultaneously several address inputs of this block will contain high level signals from the outputs of the specified triggers, which will lead to ambiguity in the sampling or recording of information. To avoid this, it is necessary to generate a signal at the address inputs A of the RAM block only at the moments that determine the change in the state of the backup channel, i.e. at the moments of trigger switching 14. In this case, the duration of the signal must correspond to the time required for writing or reading information in the memory block. This signal is formed by shaper 20, which can be implemented on the basis of a single pulse generator in standby mode. These requirements are also applied to blocks 2 and 19 of the control of main and backup radio stations. Therefore, it is assumed that they form a failure signal in the form of single pulses, rather than voltage drops. The operation of the device in case of failure of the backup radio station, which has already replaced the previously failed primary radio station. In this case, at the output of the control unit 19 of the failed backup radio station 18, a failure signal appears, which goes through the OR element 13 to the single input of the trigger 14 and to the first input of the And 12 element. Since the channel is already on, the trigger 14 is in a single state and giving a signal to its single input will not change its state. The high-level signal from the direct trigger output opens element 12, through which the failure signal from the output of the control unit 19 passes. The signal from the output of the element And 12 enters: through the element OR 8 and the element IL 6 to poll the backup channels in the manner described in the second mode in order to search for and activate a free backup radio station; through OR 21 to the address input A of the RAM memory unit 4 corresponding to the failed backup radio station; through the element OR 8 to the read input of the memory block 4. On the bit outputs P of the memory unit 4, the tuning frequency code of the failed backup radio station appears, which goes through the OR element 7 to the AND 11 elements of all the backup channels and reopens its backup radio station through the open And 11 element of the newly selected backup channel in accordance with the received code Device operation in case of failure of a free backup radio station. In this case, the signal from the output of the control unit 19 of the failed backup radio station 18 cannot pass through the element 12, since at its second input a low level signal acts from the direct output of the trigger 14, since the channel is in the standby (idle) state. The failure signal from block 19 of the control passes through the element OR 13 to the single input of the trigger. Hera 14 and changes its state. The trigger blocks the interrogation signals from the output of the OR 6 element to this channel, thereby achieving the elimination of the latter from the number of free backup channels.

A distinctive feature of the proposed device is the ability to monitor the operability of the backup radio stations and to memorize their tuning frequency codes. In the event of a failure of the backup radio station, which had already replaced the previously failed primary radio station, this would result in a re-reservation with a corresponding frequency tuning, which significantly increases the reliability of the communication channels. In addition, in case of failure of free backup radio stations in standby mode, the possibility of using them as a reserve is eliminated, thus avoiding a spurious backup of the failed main stations by failed backup stations and significantly increasing the reliability of the systems.

Claims (1)

MULTI-CHANNEL DEVICE FOR MASKING RESERVE RADIO STATIONS, containing a read-only memory block, whose read input is connected. nen with the output of the first OR element, the register and in each main channel are the series-connected main radio station and the first control unit, the outputs of the first control units are connected to the inputs of the First element OR with the address inputs of the read-only memory block, and in each backup channel, the first, second and third elements AND, the trigger and the decryptor connected in series, the frequency tuning unit and the backup radio station, the direct output of the trigger is connected to the first inputs of the first and third AND elements, and the inverse output is with the first input of the second AND element, the second input of which is connected to the second input of the first AND element of this channel and for all channels, with the exception of the first, with the output of the first AND element of the previous channel, which is different from the fact that, in order to improve reliability of the device ^ in. a RAM block, a second, third and fourth OR element are introduced to it, and a pulse shaper, a fourth AND element, a fifth and sixth OR element, and a second control unit are inserted into each backup channel, the recording input of the RAM block is connected to the output of the first OR element and the first input of the second OR element, bit inputs - with the bit outputs of the permanent memory block and with the first input of the third OR element, the read input - with the second input of the second OR element and with the output four. of the OR element, the bit outputs are connected to the second input of the third OR element, the address inputs are the outputs of the fifth OR elements of all the backup channels, the output of the second OR element is connected to the second inputs of the first and second elements AND the first backup channel, the output of the third OR element is connected to the second inputs of the third elements And all the backup channels, the inputs are even. of the first OR element are connected to the outputs of the fourth AND elements of all backup channels, and in each backup channel the first input of the sixth OR element is connected to the output of the second AND element, the output is with a single trigger input, the second input is with the output of the second control unit and with the first input of the fourth element And, the second input of which is connected to the direct output of the trigger and to the input of the pulse shaper, and the output is from the first input of the fifth OR element, the second input of which is connected to the howl. 1120502 by the pulse shaper, the output of the backup radio station is connected to the third element And is connected through to the input of the second control unit, the register is with the input of the decoder, and the output