SU1196934A1 - Device for recepting telemetering information - Google Patents

Abstract

A device for receiving telemetric information containing a pulse selector whose input is an input of the device, the output of the pulse selector is connected through a frame marker selector to the input of the detector and through the first delay element to the input of the first BANNER element, the output of the first BANNER element is connected to the first input of the shift register , the decoder and the blocks of elements And, the outputs of which are the outputs of the device, characterized in that, in order to increase the reliability, a pulse counter is entered into it, the second and third elements nty delay, the element And, the elements are NOT and the second element BANKS, the output of which is connected to the second input of the shift register and the first input of the element And, the first output of the chroniser is connected to the first input of the second element BAN, the second output - to the second inputs of the BAN elements and the first input of the counter pulses, the first and second outputs of the shift register are connected via the first and second elements, respectively, to the second and third inputs of the AND element, the output of which is connected directly to the second input of the counter and through the second element buckle to the third input of the shift register, the input of the third delay element and the third input of the pulse counter, pulse counter outputs are connected to inputs of the decoder, the outputs g. 5S (L of which is connected to the control inputs of the corresponding blocks of elements I, the output of the third delay element connects to the fourth input of the shift register, the warm outputs of which are connected to the corresponding information inputs Q of the blocks of elements I.

Description

The invention relates to a technique for transmitting and receiving telemetry information and can be used in adaptive telemetry systems for receiving multi-channel messages with low redundancy.

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

The drawing shows a functional block diagram of a device for receiving telemetry information.

The device contains a selector 1 pulses in amplitude, the first delay element 2, the first BAN element 3, the frame marker selector 4, the clock 5, the second BAN 6 element 6, the shift register 7, the AND element 8, the first and second elements HE 9 and 10, a binary counter 11 pulses, the second delay element 12, the decoder 13 channel address code, blocks And 14i-14 "elements And the third delay element 15.

The device works as follows.

Pulse signals corresponding to binary information units, of which each telemetric frame consists, arrive at the input of selector 1, which generates pulse signals at the output that uniquely correspond to transmitted binary information units (“1 or“ O). At the beginning of each frame, from the full telemetry signal taken from the output of the selector 1, the selector 4 extracts the frame marker signal, which is used to synchronize the operation of the chronizer 5. Simultaneously with the arrival of the marker signal to the chroniser 5, the latter generates a strobe pulse with a duration equal to full telemetry signal. This strobe-pulse arrives at the prohibitory inputs of the Prohibited elements 3 and 6 and locks them through the first information inputs to which the pulses of the full telemetry signal from the output of the delay element 2 are received and the clock pulses from the output of the chroniser 5, respectively. This prevents the marker from writing to the shift register 7 and unlocking the first input of the element 8. In addition, the strobe pulse sets the binary counter 11 to initial state. After the strobe pulse is terminated, the locking signals from the second inhibit inputs are removed elements BAN 3 and 6.

at the same time, binary signals "1 and" O channel increment codes and dividing codes through the element LOCK: T 3 are recorded in the shift register 7 under the influence of the shifting clock pulses, coming from the output of the chroniser 5 through the element LOCK 6.

The clock pulses also arrive at the first input of the AND 8 element, which opens only 0 for the remaining two inputs when writing the binary signal "O" in the first and second bits of the register 7, when there is a separating code "00 between information codes" in the telemetry frame increments. In this case, the clock pulses through the AND 8 element arrive at the second (counting) input of the binary counter of 11 pulses, in which the current code of the channel number is forced, since in each telemetric frame the number of dividing codes "00 is constant (equal to

0 the number of channels N) and the contents of counter 11 with the arrival in register 7 of each dividing code “00 is increased by one. In addition, the clock pulse from the output of the element And 8, delayed by the element 12 delay for a time equal to the transition process in the counter 11, reads the current code of the channel number from the counter 11 to the inputs of the decoder 13 channel address. The signal taken from the corresponding output of the decoder 13, is fed to the control input of the block 14 elements

 And, the code of the channel number of which is currently recorded in the counter 11. Simultaneously with this, the contents of the register 7, nf) n are read. This bit signals of the information code of the increment of this channel are sent to the same inputs of all N blocks of the 14 AND elements, and only at the outputs of the block of elements And, open to the control input. After the reading process in register 7 is completed, a clock pulse through delay element 15 resets the contents of register 7 to the initial state. With the input of the selector 1 of the next frame marker, the described process repeats.

In the proposed device using

5 dividing codes “00 there is an unambiguous distribution of information codes of increments on the corresponding channels, which increases its reliability.

Claims (1)

DEVICE FOR RECEIVING TELEMETRIC INFORMATION, containing a pulse selector, the input of which is the input of the device, the output of the pulse selector is connected through the frame marker selector to the input of the chronizer and through the first delay element to the input of the first BAN, the output of the first BAN is connected to the first input of the shift register, the decoder and blocks of AND elements, the outputs of which are the outputs of the device, characterized in that, in order to increase reliability, a pulse counter is introduced into it, the second and third elements for leverage, AND element, NOT elements and the second BAN element, the output of which is connected to the second input of the shift register and the first input of the And element, the first output of the chronizer is connected to the first input of the second BAN element, the second output - to the second inputs of the BAN element and the first input of the pulse counter , the first and second outputs of the shift register are connected through the first and second elements NOT respectively to the second and third inputs of the element And, the output of which is connected directly to the second input of the counter and through the second delay element to the third an input shift register input of the third delay element and the third input of the pulse counter, pulse counter outputs are connected to inputs of the decoder, the outputs of. which is connected to the control inputs of the respective blocks of AND elements, the output of the third delay element is connected to the fourth input of the shift register, the third outputs of which are connected to the corresponding information inputs from the blocks of elements I. (L with se ci se GO