SU593228A1 - Telemetric information receiver - Google Patents

Description

(54) DEVICE FOR THE RECEPTION OF A TELEVISION

INFORMATION

one

The invention relates to telemechanics and can be used in multichannel telemetering systems.

Known telemetering devices containing a receiver and a pulse generator, the output of which is connected to the inputs of the elements And the inputs of the counters, the outputs of which through digital-to-analog converters connected to the recording units. These known devices are characterized by a low accuracy of reception and conversion of signals, the absence of error correction 1. Closest to the invention to the technical essence is a device containing a signal receiver, a pulse generator, the output of which is connected to the first input of the first element And, the second input of which is connected to the output the start-up unit, the joy-dividing unit, the output of which is connected to the recorder's input and to the first input of the second element And, the second input of which is connected to the address block channel, and the output - with the input of the reference voltage block, the outputs of which are connected to the corresponding inputs of the adder, the counter and the third element AND 2. The accuracy of this known device is not sufficient due to the uncompensated error of the converter.

The aim of the invention is to improve the accuracy of the device. In the proposed device, this is achieved by introducing a frequency divider, the receiver outputs are connected to the nerve inputs of the counter, the outputs of which are connected to the inputs of the third element And, the output of the third element And connected to the third input of the nerve element And, the output of which is connected to the input of the frequency divider and to the first input of the multiplying-dividing block, the output of the frequency divider connected to the second input of the counter, the outputs of the adder are connected to the corresponding second inputs of the multiplier-divisor unit.

The drawing shows a diagram of the proposed device.

It contains a generator of 1 pulses, a nerve element AND 2, a third element AND 3, a start block 4, a frequency divider 5, a signal receiver 6, a counter 7, a multiplier-division block 8, an adder 9, a block 10 reference voltage, a second And 11 element , block 12 channel addresses and the recorder 13.

The telemeasurement code, which is taken from the line 6, is rewritten into counter 7. The signal from block 4 opens the nerve element AND 2. Geoms of emulator 1 arrive at the inputs of frequency divider 5 and multiplier 8. After filling counter 7 with pulses from divider 5 the frequency triggers the third element And 3, which blocks the input of the first element And 2. The arrival of pulses at the input of the frequency divider 5 on the multiplier-divider unit 8 is stopped.

The pulses from the output of the multiplying-delnitel block are fixed in the recorder 13 and in the adder 9 (through the second element 11 and the block 10 of the reference voltage, provided that the channel address block is triggered.

Thus, in block 10 of the reference voltage and in the adder 9, a code of the measured value of the reference voltage is set, taking into account the chipping of the working conditions of the converter and changes in the parameters of its individual elements.

Therefore, the proposed device allows one to more accurately compensate for the error of the converter and to increase the reliability of the reception of information.

Claims (2)

1.Tutevich V.N. Telemechanika. M., 1973, p. 296. 2. Tsapenko M.P. Measuring information systems. M., 1974, p. 183.