High-precision displacement sensor

A displacement sensor, high-precision technology, applied in the field of sensors, can solve the problems of low magnetomechanical coupling coefficient, affect the echo signal strength, and high eddy current loss, and achieve the effects of low eddy current loss, elimination of reflected waves, and strong echo signal

Inactive Publication Date: 2021-09-24
北京奥特美克科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnetostrictive coefficient and magnetomechanical coupling coefficient of the current magnetostrictive materials are relatively low, and the eddy current loss is high, which affects the echo signal strength

Method used

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Effect test

Embodiment 1

[0018] A high-precision displacement sensor, including an electronic chamber 1, a microprocessor 2, an excitation pulse circuit 3, an echo acquisition circuit 4, an echo analysis circuit 5, a communication module 6, a display screen 7, a time measurement circuit 8, and a measuring rod 9 , aluminum casing 10, waveguide wire 11, moving magnetic ring 12; the electronic chamber 1 includes an excitation pulse circuit 3 connected to a microprocessor 2, an echo analysis circuit 5, a communication module 6, a display screen 7, and a time measurement circuit 8; the echo acquisition circuit 4 is respectively connected to the echo analysis circuit 5 and the waveguide wire 11; the waveguide wire 11 is connected to the excitation pulse circuit 3, which is encapsulated in the aluminum casing 10, and is provided with a moving magnetic ring 12 in the middle; to eliminate The reflected wave increases the strength of the detection signal, and damping elements 13 are provided at both ends of the ...

Embodiment 2

[0021] A high-precision displacement sensor, including an electronic chamber 1, a microprocessor 2, an excitation pulse circuit 3, an echo acquisition circuit 4, an echo analysis circuit 5, a communication module 6, a display screen 7, a time measurement circuit 8, and a measuring rod 9 , aluminum casing 10, waveguide wire 11, moving magnetic ring 12; the electronic chamber 1 includes an excitation pulse circuit 3 connected to a microprocessor 2, an echo analysis circuit 5, a communication module 6, a display screen 7, and a time measurement circuit 8; the echo acquisition circuit 4 is respectively connected to the echo analysis circuit 5 and the waveguide wire 11; the waveguide wire 11 is connected to the excitation pulse circuit 3, which is encapsulated in the aluminum casing 10, and is provided with a moving magnetic ring 12 in the middle; to eliminate The reflected wave increases the strength of the detection signal, and damping elements 13 are provided at both ends of the ...

Embodiment 3

[0024] A high-precision displacement sensor, including an electronic chamber 1, a microprocessor 2, an excitation pulse circuit 3, an echo acquisition circuit 4, an echo analysis circuit 5, a communication module 6, a display screen 7, a time measurement circuit 8, and a measuring rod 9 , aluminum casing 10, waveguide wire 11, moving magnetic ring 12; the electronic chamber 1 includes an excitation pulse circuit 3 connected to a microprocessor 2, an echo analysis circuit 5, a communication module 6, a display screen 7, and a time measurement circuit 8; the echo acquisition circuit 4 is respectively connected to the echo analysis circuit 5 and the waveguide wire 11; the waveguide wire 11 is connected to the excitation pulse circuit 3, which is encapsulated in the aluminum casing 10, and is provided with a moving magnetic ring 12 in the middle; to eliminate The reflected wave increases the strength of the detection signal, and damping elements 13 are provided at both ends of the ...

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Abstract

The invention belongs to the technical field of sensors, and relates to a high-precision displacement sensor. The sensor comprises an electronic bin, a microprocessor, an excitation pulse circuit, an echo acquisition circuit, an echo analysis circuit, a communication module, a display screen, a time metering circuit, a measuring rod, an aluminum sleeve, a waveguide wire and a movable magnetic ring; the waveguide wire is made of (Fe0. 82Co0. 18) x-(Tb0. 4Mn0. 6) y-Ga (1-x-y), x is larger than or equal to 0.40 and smaller than or equal to 0.75, y is larger than or equal to 0.20 and smaller than or equal to 0.5, and 1-x-y is larger than or equal to 0.05. Compared with the prior art, the high-precision displacement sensor is structurally provided with a damping element, so that reflected waves are eliminated, and the detection signal strength is improved; by arranging the temperature sensor, measurement errors caused by temperature differences are corrected. More importantly, the invention provides a magnetostrictive material which is good in mechanical property, relatively high in magnetostriction coefficient and magnetomechanical coupling coefficient and low in eddy current loss, so that echo signals generated by the waveguide wire are strong, and the loss is low.

Description

technical field [0001] The invention belongs to the technical field of sensors, and in particular relates to a high-precision displacement sensor. [0002] technical background [0003] Displacement is a dimension that represents the position change of an object (mass point), and there are many ways to measure displacement based on sensors. According to the different forms of the measured variable transformation, the displacement sensor can be divided into two types: analog type and digital type. The analog type can be divided into physical type and structural type. Commonly used displacement sensors are mostly analog structure types, including potentiometer displacement sensors, inductive displacement sensors, auto-alignment machines, capacitive displacement sensors, eddy current displacement sensors, Hall displacement sensors, etc. The magnetostrictive displacement sensor is a high-precision, long-stroke absolute position measurement displacement sensor manufactured accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/02
CPCG01B7/02
Inventor 吴玉晓韩鑫彤李永
Owner 北京奥特美克科技股份有限公司
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