SU1158865A1 - Device for measuring displacements - Google Patents

Abstract

A DEVICE FOR MEASURING DISPLACEMENTS, containing a duct, an ultrasonic oscillation emitter, located at one end of the duct, a recording pulse shaper, the output of which is connected to an ultrasonic oscillation emitter, two ultrasonic oscillation receivers located on the acoustic duct and installed at a fixed distance from each other, two amplifiers -former of read pulses connected respectively to the outputs of the receivers of ultrasonic vibrations, and a coincidence circuit whose inputs They are connected to the outputs of two amplifiers, which form scans, and the output is connected to the input of a recording pulse former, characterized in that, in order to improve the measurement accuracy, it is equipped with two magnets connected to a moving object located at the acoustic duct at a distance from each other. (A friend, equal to half the distance between the receivers of ultrasonic vibrations.

Description

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The invention relates to measurement technology and can be used in automatic control systems.

A device for measuring displacements, comprising an evucia pipeline, an emitter of ultrasonic vibrations located at one end of the duct, a recording pulse shaper, the output of which is connected to an emitter of ultrasonic vibrations, two receivers of ultrasonic vibrations located on a zvzpkoprovod and installed at a fixed distance from each other, two accelerator-shaping impulses connected, respectively, to the outputs of the receivers of ultrasonic vibrations, and a coincidence circuit that goes to Ora connected to the outputs of two usyushteley shaping schit1 pulses) 1 Baths, and output - with the write pulse input of the CJ "

The disadvantage of this device is low measurement accuracy.

The purpose of the invention is to improve the accuracy and reliability of measurements.

This goal is achieved by the fact that a device for measuring displacements, containing a snoopowder, an emitter of ultrasonic vibrations, is located at one end of the sound duct, a pulse shaper behind it, the output of which is connected to the emitter of ultrasonic vibrations of the receiver, which are installed on the sound duct and installed at a fixed distance. from each other, two editors, readout nggulsov companion Enen shh respectively with the outputs of ultrasonic oscillation receivers , and the coincidence circuit,, whose inputs are connected by the f outputs of two amplifiers that form the impulses of the impulses, and the output to the input of the impregnator of the impulses hung, connected to two magitans connected to the main object, located on the sound duct on distance away from each other, equal to half the distance. between receivers of ultrasonic vibrations.

The drawing shows a block diagram of a device for measuring displacements

A device for measuring displacements, contains an I- duct, on

one end of which is located emitter 2 ultrasonic vibrations shaper 3 write pulses, the output of which is connected to emitter 2 ultrasonic vibrations two receivers 4 and 5 ultrasound vibrations on the sound duct and installed at a fixed distance, one from ipyra, two amplifiers forming 6 and 7 read pulses , connected respectively to the codes of the receivers 4 and 5, the coincidence circuit 8, the inputs of which are connected to the outputs of the two amplifiers-formers 6 and 7, and the output - to the input of the driver 3 write pulses, having an additional Start input (not shown) for external device startup. At a distance from the radiator, there are two magnets 9 and 10 connected to a moving object (not shown, which are installed at a fixed distance equal to half the distance between receivers 4 and 5 of ultrasonic vibrations.

The device for measuring displacements works as follows.

-. -. .

When fed to the auxiliary input, the start of the imaging unit 3 recording pulses of an electric 1 1 pulse, it excites the emitter 2 of ultrasonic oscillations, which creates a pulse of ultrasonic wave propagating along the sound conductor 1 at a speed V, the wave reaching the receivers 4 and 5 of the ultrasonic vibrations causes the appearance at their outputs of electrical signals, which, after amplification and formation at the x-formers 6 and 7 readout pulses, are fed to the inputs of the circuit 8 coincidentally 1%, which produces voltage only at one time of receipt of pulsed electrical signals at its inputs the outputs from the receivers 4 and 5, the ultrasonic vibration,

The proposed device operates at reflected ultrasound waves that are reflected by 6 tons of local areas (not shown) occur in the HH regions of the sound duct I under the magnets 9 and 10, due to the fact that the Young's modulus of the elastic ferromagnetic materials from which the sound duct is made changes during magnetization ( the delta effect, the signal from the output of the coincidence circuit 8 again starts the Fuzier 3 with recording pulses, therefore ultrasonic wave pulses circulate in the acoustic duct 1;

Measuring the frequency or period of these circulating pulses, the decimal point of the displacement.

The use of a device for measuring displacements makes it possible to increase the accuracy and reliability of measurements.

OS P

Claims (1)

A device for measuring displacement, comprising a sound guide, an ultrasonic vibrations emitter located at one end of the sound duct, a recording pulse shaper whose output is connected to an ultrasonic vibrations emitter, two ultrasonic vibrations receivers located on the sound conductor and installed at a fixed distance from each other, two an amplifier-driver of read pulses connected respectively to the outputs of the receivers of ultrasonic vibrations, and a matching circuit, the inputs of which are connected are coupled with the outputs of two amplifiers-shapers of pulses of reading, and the output is with the input of a shaper of recording pulses, characterized in that, in order to increase the accuracy of measurements, it is equipped with two magnets connected to a moving object located at a distance from the sound pipe from each other equal to half the distance between the receivers of ultrasonic vibrations. SU ... 1158865> 1158865 2 at one end of which is located an emitter of 2 ultrasonic vibrations, a shaper of 3 recording pulses, the output of which is connected to a radiator of 2 ultrasonic vibrations, two receivers 4 and 5 of ultrasonic vibrations in the sound duct and installed at a fixed distance from each other, two amplifier-shaper 10 6 and 7 read pulses, respectively connected to the outputs of the receivers 4 and 5, a coincidence circuit 8, the inputs of which are connected to the outputs of two bi-7 amplifiers, and the output is connected to the input of the 3 pulse shaper recordings with an additional input '’Launch (not shown) for external device startup At a certain distance 20 from the emitter there are two magnets 9 and 10 connected to a moving object (not shown), which are installed at a fixed distance equal to half the distance between the receivers 4 and 5 of ultrasonic vibrations. A device for measuring movements works as follows. ¹