SU1524191A2 - Device for programmed interrogation of telemetery channels - Google Patents

Abstract

The invention relates to radio engineering and communications. The purpose of the invention is to increase speed. The device contains 1 interrogation circuits, each of which consists of a block of buffer memory 2, a request generator 3, a reversing counter 4, an OR 5 and an E 6 and 7, and also Grs 8 clock pulses, register 9 the shift, the driver 10 of the polling program, the switch 11, the addressing unit 12, the el-OR 13,14,16 and 17, the shapers 15 and 20 of the reset signal, the trigger 18 and the EL-19. When information arrives, the polling cycle of all chains 1 poll. At the same time, if at least one of the blocks of the buffer memory 2 of the circuits 1 has information, then at the output of the OR 17 element there is a signal that this information is available. If there is no information in any of the blocks of the buffer memory 2, the polling does not start and the absence of a signal on the signaling bus indicates the absence of information. The goal is achieved by the introduction of El-OR 16 and 17, trigger 18, El-19 and Former 20. 1 Il.

Description

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The invention relates to radio engineering and communications, can be used in information transmission systems with temporary channel compaction and is an improvement of the device according to the author. No. 1225032.

The aim of the invention is to improve speed.

The drawing shows the structure on the electrical circuit of the device for polling telemetry channels.

The device contains n circuits 1 polling, each of which contains a block 2 of buffer memory, a driver 3 request, reversible counter 4, the element OR 5 and the first 6 and second 7 elements I. In addition, the device has a generator of 8 clock pulses, shift register 9 , shaper 10 polling programs, switch 11, block 12 addressing, first 13 and second 14 elements of NLP, shaper 15 reset signal, third 16 and fourth 17 elements OR, trigger 18, element AND

 19 and an additional reset signal generator 20.

A device for polling telemetry channels works as follows.

When a message arrives at block 2 at the output of the imaging unit 3, pulses appear, which are counted by counter 4. And its outputs contain signals indicating the presence in block 2 of an appropriate number of packets of information. If at least one packet of information is present in block 2, there is a single signal at the output of the OR 5 element.

Thus, if at least in one of the blocks 2 of the circuit 1 there is information, then at the output of the fourth element PTI 17 and the first input of the element 19 there is a signal about the presence of information.

When a signal is received from an external device to allow information to be read into a line or its water to an accumulation device, the signal at the output of the element AND 19 appears only if there is a signal at the output of the fourth element OR 17, a signal from the output of the element 19 and trigger 18 is set to one and the signal from its output starts the generator 8, and also the postus

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It goes to the external device, the signal of the survey to start.

The pulses from the generator 8 are fed to the input of the register 9. In the first cycle, the signal from the first output of the register 9 is fed to the shaper 10, the corresponding output of which provides V1 switching by the switch 1 1 of the output channels of the first circuit 1 to the communication line, and in block 12 - preparation for transmission the corresponding address. At the same time, this signal goes to the second inputs of the first 6 and second 7 elements I. If block 2 has at least one packet of information, then a signal appears at the output of the second element AND 7 that, passing through the second element OR 14, goes to the driver 15, This signal is present at the input of the imaging unit 15 as long as at block 2 there is at least one packet of information.

In the second clock of the generator 8, the signal from the second output of the register 9 is fed to the control input of the block 12 and provides the reading of the address to the communication line through the switch 11, At. each cycle, the signal from the corresponding outputs of register 9 through the first elements OR 13 and I 6 goes to the second input of the reversible counter A. Thus, if in block 2 K information packets were recorded, then K clocks after transmitting the address at the outputs of the reversible counter 4 and the element OR 5 signals are missing. As a result, the signals at the outputs of the second element AND 7 and the second element OR 44 disappear. On the negative front, the driver 15 generates a signal arriving at the register 9, and sets the latter to the initial state.

The next pulse of the generator 8, fed to the register 9, translates the next circuit 1 to the polling state with a signal from its first output. If in block 2 there is no information, then there is no signal at the outputs of the OR 5 element of the corresponding circuit 1. In this case, for this block 2, the signal at the output of the second element OR 14 appears only for the time of the clock pulse arriving at its first input from the generator 8. As there are no signals at the other inputs of the second element OR 14, immediately after the end of the operation

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a clock pulse is formed by a reset pulse nm pulse arriving at the second input of register 9, setting it to the zero state.

At the end of the polling cycle of all the polling circuits and the signal disappears at the last output of the shaper 10. A signal is formed by the additional shaper 20. This signal sets the trigger 18 to the zero state, and the third element OR 16 sets the reset state to the initial state 9.

The device is reset.

If there is no information in any of the blocks 2, then when a signal arrives on the control line, the trigger 18 is not set to one, the polling does not start, and the absence of a signal on the alarm bus signals the absence of information.

1916

Claims (1)

Formula iso B e te e II 0 five 0 five The device of program interrogation of telemetric channels on an auth.St. No. 1225032, distinguished by the fact that, in order to improve speed, the third and fourth elements of the PTI are introduced, an additional reset signal generator and subsequently connected And element and a trigger, the second input of which is combined with the first input of the third OR element and connected to the output of the reset driver, the input of which is connected to the n-th output of the sampler of the polling program, and the trigger output is connected to the control input of the clock generator, the output of the reset signal generator is connected reset input shift register via a third IL15 element and the output element or poll all circuits via the fourth OR gate connected to the input member I.