SU1379788A1 - Data transmission device - Google Patents

Abstract

The invention relates to a technique for the transmission and processing of discrete information and can be used in adaptive telemetry systems. The aim of the invention is to increase the reliability of information transfer. In order to achieve this goal in the sequential verification process, countdown. These channels form an address part in which the number of characters is equal to the number of channels. Signals of the high-level address group correspond to significant counts in the output message frame, while low-level signals correspond to inconsequential counts. Amplitude sampling of sensor signals is carried out in adaptive-time samplers, and the formation of information signals in ADC and information shift registers. 1 3.p about f-ly, 2 ill. € (L

Description

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The invention relates to the field of transmission and processing of discrete information and can be used in adaptive telemetry systems.

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

FIGURE is a block diagram of a device for transmitting information; FIG. 2 is a functional diagram of the adaptive-temporal sampler.

The device for transmitting information contains information inputs 1, control inputs 2 and 3, information outputs 4, address outputs 5, adaptive-time samplers 6, -6 ', adder 7, analog-to-digital converter (ADC) 8, elements

And, elements OR 10 and 41, first 12 and second 13 registers, delay element 14, 15 clock pulse generator, delay element 16, AND element 17, trigger 18,

The adaptive-time sampler (Fig.) Contains a key 19, a memory element 20, a key 21, a key 22, a delay element 23, a comparison element 24, a threshold element 25, an AND element 26, a pulse shaper 27, a trigger 28, a delay element 29, an element And 30. element is NOT 31 and trigger 32,

The device works as follows.

In the process of sequential verification of samples of all channels, an adrenal part is formed, in which the number of symbols equals the number of channels. Signals in the output frame of the message correspond to signals from the address group of a high level, and non-essential samples from a low level.

The control input 3 of the device receives signals that shift the register 12, start the ADC 8 and enter the input of the delay element 14, the signals from the output of the first register 12 arrive at the second inputs of which the signals through the adder 7 arrive at the input of the ADC 8,

Adaptive-time sampler works as follows. The signal from the sensor is fed to the input of the key 21 and the comparison element 24, in which it compares the incoming signal with the previous one recorded in the memory element 20. When the signal reaches the output element 24

values that exceed the threshold threshold 25, the signal from the last output, the passage through element 26, starts the driver 27, the pulse from the output of generator 27 opens the key 22, which erases information from the memory element 20 and, passing through the delay element 23 opens the key 21 and permits the recording of the following information in memory element 20 In addition, the pulse from the output of element 23, the passage through delay element 29 switches the trigger 32. The signal from the output of trigger 32 prepares the element 30, the latter when the signal arrives from the register tra vschaet shift control signal to the input switch 19 which opens and transmits the information to the input of the adder. In addition, the signal from the output element AND 30, the passage through the element NOT 31, resets the trigger 32 to the outgoing state.

The presence of the frame feature ensures the correct decryption of the message with irrelevant samples of the parameter of the first channel and the correct dating of the messages when there are frames that do not contain significant samples.

Claims (2)

Invention Formula 1 o Device dp of transmitting information containing adaptive-time samplers, the first inputs of which are information1 ion inputs of the device, an analog-to-digital converter, AND elements, OR elements, characterized in that, in order to verify the reliability of information transmission, adder, shift registers, delay elements and trigger, the first outputs of adaptive-time samplers are connected to the corresponding inputs of the adder, the output of which is connected to the first input of the analog-digital converter, the outputs are not The first shift register is connected to the second inputs of the corresponding adaptive-time samplers, the second outputs of which are connected to the inputs of the first OR element, the first input of the first shift register is the first control input of the device, the second input is the second control input of the device shift register, with the second input of the analog-digital converter and through the first delay element with the first input of the first element And whose output is connected to the first input of the trigger, the output of the trigger through the clock generator connected to the second inputs of the second shift register and the second delay element, the outputs of the analog-to-digital converter are connected to the first inputs of the corresponding second elements And, the second inputs of which are connected to the corresponding outputs of the second shift register, the outputs of the second elements And connected to the inputs of the second element OR, the last output of the second shift register is connected to the second input of the trigger, the output of the first element OR is connected to the second input of the first element AND, the outputs of the second the OR element, the second delay element and the first AND element are the information outputs of the device, the outputs of the first OR element and the first delay element are the address outputs of the device, 2. The device according to Claim I, which is such that each adaptive-time sampler contains the first key, the output of which is the first output of the adaptive-time sampler, the first inputs of the key and the comparison element is the first input of the adaptive-time sampler, the output of the comparison element through the threshold element is connected to the first input of the first element AND, the output of which through the pulse shaper is connected to the first inputs of the first trigger and the third key and 0 through the first delay element connected to the second input of the second key and to the input of the second delay element, the output of which is connected to the second input of the first trigger and the first 5 by the second trigger input, the output of the second key is connected to the memory element, the first output of which is connected to the second input of the third key, the second output is connected to the second input of the comparison element and the first input of the first key, the third key is connected to the zero power terminal, the output of the first trigger and the first output of the second trigger is connected to the corresponding second inputs of the first element I, the second output of the second trigger is connected to the first input of the second element A, the second input of which is the second input of the adaptive 0 meniogo diskretieatora, an output of second AND elemeita connected to the second input of the first switch, the second output is adaptively vremeiiogo diskretieatora through elemeit and is coupled to the second input of the second flip-flop. 0 five f owV To Ci / ffMomopt / 7 Htyu71 About t 12.  f element of FIG. d