SU1439650A1 - Information receiving device - Google Patents

Abstract

The device relates to telemechanics and can be used to receive information transmitted by a binary code at random times. The purpose of the invention is to increase the reliability of receiving information. The device contains a receiver 1, selector 2 units, the element 3 prohibition, the selector 4 of the sign of information, trigger 5, generator 6 pulses, counter 7, elements And 8, 9, 10, counter 11, element And 12, counter 13, element And 14 , the prohibition element 15, the element And 16, the register 17. The generator 6 generates pulses, the frequency of which is 2 times higher than the pulse frequency of the information message. At the output of the And 10 element, a modulated pulse train is formed from the input information signal. If the number of counted pulses is greater than 2, then the output of the device is set to 1, otherwise - O. 1 Il.

Description

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The invention relates to telemechanics and can be used to receive information transmitted by a binary code at random times.

The purpose of the invention is to increase the reliability of receiving information.

The drawing shows a functional diagram of the device.

The device contains a receiver 1, a selector 2 units, an element 3 of the ban, the selector 4 of the characteristic information trigger 5, the generator 6 pulses, the counter 7, the element And 8, the element And 9, the element And 10, the counter 11, the element And 12 the counter 13, the element And 14, the element 15 of the ban, the element And 16, register 17,

The device works as follows

The information of the 5th send, intended for reception by the device, consists of k + n bits. The first k bits make up the identification and synchronization code: The second n bits are an information code. I

In the initial state at the output

trigger 5, a logic level which prohibits the passage of a signal through the element 10 is present. Keeps counter 13 and counter 7 at zero and allows the passage of received signals to the selector 4 of the information sign. If the recognition and synchronization code has arrived at the input of the selector 4, a pulse is generated at its output, switching the trigger 5 to the state. Logical 1, which enables the counters 7,13 and the passage of signals through the element 10 to count, and the locked element 3 closes and to the input of the selector 4 is not received.

The generator 6 generates slings, the frequency of which f is chosen 2 times greater than the pulse frequency of the information pulse; the ion parcel f The number m is chosen so as to ensure a sufficiently large filling of the information signal with the oscillators of the generator 6, which makes it possible to more reliably reveal the true information signal.

At the output of the element And 10 from the prohibition pulse, with the first inputs of the generators from the generator o and the input information: - the national signal from the selector 2 is formed modulated with the generator frequency 6 of the code post and the second counters, the outputs of the last of which are connected to the inputs of the first element I whose output is connected to the first inputs

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the pulse rate corresponding to the information signal, which is fed to the input of the third counter 11. The outputs of the counter 11 of dimension 2 are connected to the inputs of the element 12 so that if the code is on

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the outputs of counter 11 are less than /, then logical 12 is set at the output of AND 12. If the code at the outputs of counter 11 is equal to or greater than 2, then logical 1 is set at the output of AND 12.

The outputs of the counter 7 are connected to the input of the element AND 9 so that the outputs of the element 9 and every 2 pulses of the generator 6 generate a clock pulse recording information into the register 17. If a code 2 is set at the outputs of the counter 7, then the output of the element 8 forms a pulse reset counter 11,

Clock pulses pass through the element 15 of the prohibition on the clock input of the register 17 and the information formed at the output of the element 12 is written into it, since at this time the logical input 0 from the output of the element 14 enters the inverse input of the element 15 of the ban. A code n corresponding to the number of information bits of dressing and the number of clock pulses at the output of the first element I 14, a logical I is formed, closing the prohibition element 15 and opening the second element AND 16, the Next (n + 1) -th clock pulse through element 16 and post Single flushes second input of flip-flop 5 and flip-flop sets the output to a logical O device is transferred to its initial state and ready to receive the next information posshki.

Claims (1)

Invention Formula A device for receiving information. containing a receiver whose output through the unit selector is connected to the first input of the first prohibition element, the output of which through the information flag selector is connected to the nepBoi-iy trigger input, the output of which is connected to the second input of the first element and second counters, the outputs of the last one connected to the inputs of the first element And, the output of which is connected to the first inputs The second prohibition element and the second element And, the output of which is connected to the second input of the trigger and is the first output of the device, the output of the pulse generator is connected to the second input of the first counter, the outputs of which are connected to the inputs of the third element And, the output of which connects the accuracy of information reception, into it the fourth, fifth, sixth elements And, the third counter, the output of the unit selector. connected to the first input of the fourth element And, the output of which is connected to the first input of the third counter, the outputs of which through the fifth AND gate connected to with the second inputs of the second counter the second input of the register, the output of the first, the second element And the second prohibition element, the output of which is connected to the first input of the register, the outputs of which are the second outputs of the device, otherwise the second counter through the sixth element And connected to the second input of the third counter, the outputs of the trigger and the pulse generator are connected respectively to the second and third inputs so that, in order to increase the fourth element I, the second register input, the output of the first the second counter through the sixth element And connected to the second input of the third counter, the outputs of the trigger and the pulse generator are connected respectively to the second and third inputs