SU367561A1 - RECEPTION MULTICHANNEL TELEMETRIC - Google Patents

Description

one

The invention relates to the field of telemetry and can be used to measure physical processes in places that are inaccessible or difficult to reach for humans, as well as in systems for the automatic collection, processing and transmission of information.

Known receiving multichannel telemetry devices with channel separation by waveform, containing a linear unit, orthogonal signal generator, the outputs of which are connected to the integrator inputs, to other inputs of which are sub-, reset unit output keys, have insufficient reception accuracy due to the complexity of modeling channel functions (orthogonal Legendre polynomials), the use of analog multipliers using nonlinear elements.

In order to improve the reception accuracy in the proposed device, the direct and inverse outputs of the orthogonal signal generator are connected to the inputs of the matching circuits, to the second inputs of which the outputs of the paraphase block are connected, and the output of the paraphase block is connected to the output of the linear block, and the outputs of the coincidence circuit through the assembly circuit connected to other inputs of the integrators, and the measurement clock generator is connected between the orthogonal signal generator and the reset unit.

The drawing shows a block diagram of the proposed device.

The device contains a linear unit 1, a paraphase unit 2, a coincidence circuit 3, an orthogonal signal generator 4, an assembly circuit 5, a integrator 6, a measurement clock driver 7, a reset unit 8, a registration block 9.

The device works as follows.

The received signal as a sum of channel signals based on the orthogonal Walsh functions is fed to the input of the line 1 receiver unit. From the output of the linear unit, the sum signal is fed to the input of the paraphase unit 2, the output of which simultaneously receives direct I and inverse II signals. These signals are fed to the inputs of the coincidence circuit 3. The second inputs of the coincidence circuits simultaneously receive direct and inverse channel signals (reference oscillations) from the generator 4 of orthogonal signals.

The output signals of the coincidence circuits 3 are fed to the inputs of the assembling circuits 5, respectively. The signal removed from the assembly circuit is fed to the input of integrator 6 (channel), at the output of which the signal appears only if the receiver of the sum signal has an oscillation corresponding in form to the reference oscillation received from the orthogonal signal generator.

The reference oscillations also arrive at the shaper 7 of the measurement cycle, from the output of which the signal arrives at the input of the reset unit 8. The reset unit shifts the integrator to the zero position at the end of the measurement cycle.

Subject invention

A multi-channel receiving telemetry device containing a linear unit, an orthogonal signal generator, whose outputs are connected to the integrator inputs, to the other inputs of which the output of the reset unit is connected, in order to improve the reception accuracy, the direct and inverse outputs of the generator of orthogonal signals are connected to inputs of coincidence circuits, to the second inputs of which the outputs of the paraphase block are connected, and the output of the paraphase block is connected to the output of the said linear block, and the outputs of the circuits coincide and through the circuit assembly connected to the other inputs of the integrators, and between the orthogonal signal generator and resetting the measurement unit incorporated shaper stroke.