RU1803980C - Displacement/code converter - Google Patents

Abstract

The invention relates to measuring technique, and more specifically to converters of linear and angular displacements into electrical signals. An object of the invention is to enhance functionality. This goal is achieved by exciting a differential parametric motion sensor 2 with pulses of short duration. Moreover, in the circuit formed by the output winding 5 and the mode

Description

by the driving capacitor b, damped oscillations are excited. The half-wave sign of the first oscillation depends on the sign (direction) of the movement, and the number of oscillations depends on the magnitude of the movement. Blocks 9, 10, 11, 13, 14,16 form counting pulses, the number of which is proportional to the movement, and blocks 9, 10,12,15 are signs of the direction of movement. The direction of counting in the counter 18 is set before the arrival of pulses, which provides a delay element 17. The outputs of the converter are the outputs of the reverse counter 18 and the output of the D-flip-flop 15.1 ill.

The invention relates to measuring technique, and more specifically to converters of linear and angular displacements into electrical signals.

An object of the invention is to expand the functionality of a converter.

The drawing shows a diagram of a displacement transducer to code.

The motion to code converter comprises a pulse generator 1, a differential parametric displacement sensor 2, a voltage difference generator 3 made in the form of a differential transformer with a two-section primary winding 4 and an output winding 5, a mode capacitor 6, an amplifier 7, a code generating unit 8, which contains Schmidt trigger 9, one-half-wave rectifier 10, first 11 and second 12 inverters, first t3 and second 14 single vibrators, D-trigger 15, OR element 16, delay element 17 and counter 18 pulses. Moreover, the differential parametric sensor 2 for moving the outputs is connected to the terminals of the two-section primary winding 4, which are the inputs of the voltage difference driver 3, a Schmidt trigger 9, the input of which is the input of the code driver 8, the output through the half-wave rectifier 10 connected to the inputs of the first inverter 11, the first one-shot 13 and the D-input of the D-flip-flop 15, the output of which is a directional output and connected to the control input of the reversible pulse counter 18, the output of the first inverter 11 through w The second single-shot 14 is connected to the first input of the OR element 16, the second input of which is connected to the output of the first single-shot 13, and the output through the delay element 17 is connected to the counting input of the reverse pulse counter 18, the outputs of which are the code outputs of the converter, to the C-input D- trigger 15 is connected to the output of the second inverter 12, the input of which is the second input of block 8 of the code generator, which is connected to the output of the pulse generator 1, which is connected to the common output of the differential parametric sensor 2 escheni, rezhimozadayuschy

the capacitor 6 is connected in parallel to the output winding 5 of the differential transformer of the voltage difference generator 3, one terminal of which is connected to a common bus, and the other through an amplifier 7

connected to the first input of code generating unit 8.

The converter operates as follows. The pulse generator 1 generates short voltage pulses that cause a voltage drop across the sections of the two-section primary winding 4 of the differential transformer of the voltage difference generator 3 with values depending on the state of the differential parametric displacement sensor 2. The damped oscillations arising in this case in parallel connected output winding 5 and mode-setting capacitor 6 through

an amplifier 7 is fed to the input of a Schmidt trigger 9, in which unipolar pulses of calibrated amplitude are generated. From the output of the Schmidt trigger .9, the signal is supplied to a half-wave rectifier 10, which matches the high and low signal levels at the output of the Schmidt trigger 9 with the corresponding levels of the logical part of the code generating unit 8. From the output of the half-wave rectifier 10, the signals are fed to the first single-vibrator 13 and through the first inverter 11 to the input of the second single-vibrator 14, which generates counting pulses of calibrated duration at the output. The signals from the outputs of the first 13 and second 14 single vibrators through the OR element 16 and the delay element 17 are supplied to the C-input of the reversible pulse counter 18. The sign of the direction of movement as well as the sign of the direction of counting is determined and set for the entire period of counting by a signal from the output of the D-trigger 15, to the C-input of which a signal is output from the output of the pulse generator 1 through the second inverter 12.

and a signal from the output of a one-half-period rectifier 10 is supplied to the D-input. Moreover, depending on the level (high or low) of the signal present at the D-input of D-flip-flop 15 at the end of the pulse at the output of generator 1 pulses, that sign code (0 or 1) will be set for the entire counting period. The time constant of the delay element 17 is selected so that before the counting pulses arrive from the outputs of the single-shots 13 and 14 at the C-input of the reversible counter 18, a signal corresponding to the counting direction is established at the control input of the reversible counter 18 of pulses.

Claims (1)

SUMMARY OF THE INVENTION A motion to code converter comprising a differential parametric motion sensor, the outputs of which are connected to the inputs of a voltage difference generator, a pulse generator, an amplifier, and a code generating unit, characterized in that, in order to expand the functionality of the converter, the mode-setting capacitor is entrusted to it, the voltage difference shaper is made in the form of a differential transformer, the terminals of the two-section primary winding of which are the inputs of the form the circuit breaker, and the code generation unit contains a Schmidt trigger, a half-wave rectifier, two inverters, two one-shots, a D-trigger, an OR element, a delay element and a reverse pulse counter, the input of the Schmidt trigger is the first input of the block, and the output is through a half-wave rectifier with the inputs of the first inverter and one-shot and the D-input of the D-flip-flop, the output of which is a directional output and connected to the control input of a reversible pulse counter, the output of the first inverter is connected to the second one-shot the first input of the OR element, the second input of which is connected to the output of the first one-shot, and the output through the delay element is connected to the counting input of the reverse pulse counter, the outputs of which are the code outputs of the converter, the output of the second inverter is connected to the C-input of the D-trigger, the input of which is is the second input of the block and which is connected to the output of the pulse generator, which is connected to the common output of the differential parametric displacement sensor, the mode capacitor is connected in parallel to the output the differential winding of the differential transformer, one output of which is connected to a common bus, and the other through an amplifier is connected to the first input of the code forming unit.