SU649010A1 - Device for reduction of telemetry information redundancy - Google Patents

Description

Duplex 1m input reference reference unit and comparator.

The drawing is a block diagram of the device.

The device contains a reference memory unit 1, a multiplication unit 2, a counter 3, a timing unit 4, a control, an adder 5, a comparator 6, a buffer storage unit 7, an analog-converter converter 8, an adder 9, a register 10, a switch 11 and sensors 12.

The device works as follows.

Signal at | from sensors 12 goes to switch 11 and then to analog-to-digital converter (ADC) 8. After ADC 8, the current input signal Y goes to the first adder 5 (where the sum yi and the last transfer ordinate y stored in block 1 is calculated) and the second adder 9, where the sum of yj and the code Е JK coming from block 1 is calculated. Block 2 multiplies the value () by i / 2. This work is then fed to comparator 6, the unit completes the operation of subtracting () 1/2 - .. and the sign code is determined-signDj. The code -h the code of the sign Dj is stored in block 1. After this, the AcJ code is formed with the help of blocks 1 and 2. Then, the comparator 6 compares the module Dj with the value of A (. If there is a large value of L, then the significant ordinate y is calculated, and the sign code 0 is entered into block 7, which is used for temporarily storing data received at irregular speeds from information sources, and converting them into a stream with a constant frequency corresponding to the transmission rate in the communication line. In addition, the unit remains in block 1 for use as a yo.

In block 1, yj is also sent for use as y when summing up at the next survey in block 9 with a code matching the ADC 8, i.e. for receiving the code (in the i-oM poll code, Yc. After block 7, the data goes to the output register 10 dp convert from parallel to serial code, and then go to the communication channel. Counter 3 is designed to count the number of polls i. The timing and control unit 4

Generates the signals necessary to control operations to change the tolerance limits b and so on.

The proposed device makes it possible to form a transmission dp in the communication line the sign code of the submodule expression of the sampling criterion and obtain a gain in the output information content of the device and the speed of transmission in the communication line almost twice.

Claims (2)

1. Aerospace telemetry. Ed. K.N. Trofimova. M., 1968, p. 199-207. 2. Application No. 24255 {nd / 18-24, before which a decision was made to issue an author's certificate.