CN108680092A - A kind of ferrite magnetostrictive displacement sensor - Google Patents

A kind of ferrite magnetostrictive displacement sensor Download PDF

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Publication number
CN108680092A
CN108680092A CN201810389773.1A CN201810389773A CN108680092A CN 108680092 A CN108680092 A CN 108680092A CN 201810389773 A CN201810389773 A CN 201810389773A CN 108680092 A CN108680092 A CN 108680092A
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CN
China
Prior art keywords
waveguide filament
shell
processing
ferrite
circuit module
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Pending
Application number
CN201810389773.1A
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Chinese (zh)
Inventor
谢代梁
陈国庆
刘铁军
徐志鹏
徐雅
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China Jiliang University
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China Jiliang University
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Priority to CN201810389773.1A priority Critical patent/CN108680092A/en
Publication of CN108680092A publication Critical patent/CN108680092A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The present invention relates to a kind of devices of ferrite magnetostrictive displacement sensor.The present invention includes sensor head, measuring rod and mobile magnetic ring component.The sensor head is equipped with microprocessor, processing of circuit module and coil, the microprocessor and processing of circuit module are mounted in closed shielded box, the processing of circuit module is used to generate the conditioning of driving pulse and echo-signal, the coil is positioned over waveguide filament one end, for receives echo-signal, the waveguide filament other end is equipped with the damper for absorbing torsional wave;The measuring rod includes waveguide filament, metal aluminum casing and shell, metal aluminum casing tight waveguide filament, and as in shell;It is cased with magnet ring on shell, can move left and right on the shell, for interacting with waveguide filament, for the waveguide filament medium using ferrite as magnetostriction materials, the present invention substantially increases the stability of working sensor, reduces extraneous interference, measurement accuracy is improved, cost has been saved.

Description

A kind of ferrite magnetostrictive displacement sensor
Technical field
The present invention relates to sensor technical field, more particularly to a kind of ferrite magnetostrictive displacement sensor.
Background technology
Magnetostrictive displacement sensor is to utilize magnetostriction principle, carries out the New Displacement Transducer of displacement measurement.With The increasingly raising of shipboard automation degree, Computerized monitor system obtains increasingly extensive utilization on ship.Ship microcomputer is certainly The utilization of control system, it is desirable that widely use various sensors, and require easy to connect, the data biography of sensor and computer Defeated speed is fast, precision is high.Magnetostriction principle was found in 1842 by scientist James Prescott Joule. James Prescott Joule have found that, when ferromagnet is magnetized by external magnetic field, domain structure will change, The atomic distance of crystal changes correspondingly, and causes ferromagnetic volume, shape to change, especially ferromagnetic substance is in magnetic field side Upward length changes, and this magnetic effect is just referred to as magnetostriction.
It can surveyed along sensor length direction position magnet free to slide currently, magnetostrictive displacement sensor has High current excitation pulse signal is loaded during amount first on waveguide filament, which generates annular magnetic around waveguide filament Field is propagated along waveguide filament, and toroidal magnetic field generates interaction with position magnet magnetic field at position magnet, generates instantaneous torsional wave, Along waveguide filament toward travel back, it is detected test coil and receives.By measuring driving pulse to the time interval between receives echo-signal Carry out the correspondence between settling time and displacement.Since the echo-signal of generation belongs to small-signal, for small-signal Pickup is more difficult, causes the measurement accuracy of sensor relatively low.Meanwhile existing sensor is complex in structure, exists Many shortcomings, anti-interference ability is weak.
Invention content
To solve the above-mentioned problems, the present invention provides one kind being based on ferritic magnetostrictive displacement sensor, has The advantages that system detectio precision is high, reliability is high, at low cost, detection efficiency is high, high degree of automation.
To achieve the goals above, the present invention is realized using following technical scheme:
The present invention includes sensor head, measuring rod and mobile magnetic ring component.The sensor head be equipped with microprocessor, Processing of circuit module and coil, the microprocessor and processing of circuit module are mounted in closed shielded box, at the circuit Reason module is used to generate the conditioning of driving pulse and echo-signal, and the coil is positioned over waveguide filament one end, for receiving echo Signal, the waveguide filament other end are equipped with the damper for absorbing torsional wave;The measuring rod includes waveguide filament, metal aluminum casing And shell, metal aluminum casing tight waveguide filament, and as in shell;Mobile magnet ring is cased on shell, it can be left on the shell It moves right, for interacting with waveguide filament, the waveguide filament medium is using ferrite as magnetostriction materials.
Furtherly, the metal aluminum casing ground connection.
Furtherly, there are gaps between the waveguide filament and shell.
Beneficial effects of the present invention are:Magnetic loop interaction as magnetostriction materials and is moved using Ferrite Material, Stronger torsional wave signal can be generated, the acquisition of echo-signal is conducive to;In addition, waveguide filament outer layer is equipped with metal aluminum casing simultaneously Ground connection can effectively shield noise signal and electromagnetic interference;It is separated with a fixed gap between waveguide filament and shell, reduces ambient temperature The influence that press belt comes.Compared with prior art, the present invention substantially increases the stability of working sensor, improves simultaneously Measurement accuracy.
Description of the drawings
Fig. 1 is a kind of ferrite magnetostrictive displacement sensor map;
Fig. 2 is measuring rod partial enlarged view.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below Conjunction is specifically illustrating, and the present invention is further explained.
As depicted in figs. 1 and 2, a kind of ferrite magnetostrictive displacement sensor, including processing of circuit unit 1 (contain micro- place Manage device), receiving coil 2, waveguide filament 3, shell 4, gap 5, metal aluminum casing 6, mobile magnet ring 7 and damper 8.At the circuit Reason unit 1 is fixed in locking device, and is cased with shielding device, and the receiving coil 2 is positioned over one end of waveguide filament 3 and and circuit Processing unit 1 is connected, and the waveguide filament 3 is placed in inside metal aluminum casing 6, and the metal aluminum casing 6 connects ground wire, the wave 3 outer layer of seal wire is equipped with plastic shell 4, and centre is separated with gap 5, and the mobile magnet ring 7 is placed on shell 4, and the damper 8 is placed in The other end of waveguide filament, for absorbing torsional wave.
The operation principle of the magnetostrictive displacement sensor is as follows:
Driving pulse is generated in processing of circuit unit and acts on waveguide filament, and toroidal magnetic field is formed on waveguide filament along waveguide Silk is propagated, and the magnetic field interaction on fixed magnetic field and waveguide filament that mobile magnet ring generates generates instantaneous torsion wave direction both ends and passes It broadcasts, one end is received coil reception wherein, and the other end is damped device absorption.Processing of circuit unit is by measuring driving pulse production It gives birth to the time difference between receiving coil receives echo-signal and determines displacement.
The present invention, as magnetostriction materials, is had higher magnetostriction coefficient, can made with magnet ring using ferrite With the higher torsional wave signal of intensity is generated, it is conducive to the pickup of echo-signal.There are various noises when work, as spatial electromagnetic is dry The noise brought, system power supply noise etc. are disturbed, the present invention realizes isolation Noise Reduction using the method that metal aluminum casing is grounded, And magnet ring is placed on shell and waveguide filament is there are certain interval, while ensureing that two magnetic field interactions are abundant, reduce external The influence of factor.
Compared with prior art, the present invention substantially increases the stability of working sensor, at the same it is less it is external because The measurement error that element is brought, improves measurement accuracy.

Claims (3)

1. a kind of ferrite magnetostrictive displacement sensor, including sensor head, measuring rod and mobile magnetic ring component, feature It is:The sensor head is equipped with microprocessor, processing of circuit module and coil, the microprocessor and processing of circuit module In closed shielded box, the processing of circuit module is used to generate the conditioning of driving pulse and echo-signal, the line Circle is positioned over waveguide filament one end, is used for receives echo-signal, and the waveguide filament other end is equipped with the damper for absorbing torsional wave;Institute It includes waveguide filament, metal aluminum casing and shell to state measuring rod, metal aluminum casing tight waveguide filament, and as in shell; The mobile magnet ring is cased on shell, the mobile magnet ring can move left and right on the shell, for interacting with waveguide filament, institute Waveguide filament medium is stated using ferrite as magnetostriction materials.
2. a kind of ferrite magnetostrictive displacement sensor according to claim 1, it is characterised in that:The metal aluminium set Pipe is grounded.
3. a kind of ferrite magnetostrictive displacement sensor according to claim 1 or 2, it is characterised in that:The waveguide There are gaps between silk and shell.
CN201810389773.1A 2018-04-27 2018-04-27 A kind of ferrite magnetostrictive displacement sensor Pending CN108680092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810389773.1A CN108680092A (en) 2018-04-27 2018-04-27 A kind of ferrite magnetostrictive displacement sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810389773.1A CN108680092A (en) 2018-04-27 2018-04-27 A kind of ferrite magnetostrictive displacement sensor

Publications (1)

Publication Number Publication Date
CN108680092A true CN108680092A (en) 2018-10-19

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CN201810389773.1A Pending CN108680092A (en) 2018-04-27 2018-04-27 A kind of ferrite magnetostrictive displacement sensor

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109870389A (en) * 2019-04-12 2019-06-11 长春工程学院 Based on magnetostrictive displacement sensor irrigation water coefficient of viscosity detection device and method
CN111396495A (en) * 2020-03-25 2020-07-10 桂林电子科技大学 Shock absorber and commercial car suspension
CN112729479A (en) * 2020-12-23 2021-04-30 北京斯克维思仪表有限公司 Coil type magnetostrictive sensor
CN113432521A (en) * 2021-06-11 2021-09-24 北京奥特美克科技股份有限公司 High-precision displacement sensor
CN114264221A (en) * 2021-12-24 2022-04-01 南昌工程学院 Magnetostrictive displacement sensor for precise control
WO2022252227A1 (en) * 2021-06-04 2022-12-08 Abb Schweiz Ag Sensing assembly for use in piezoelectric liquid level sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1797007A (en) * 2004-12-21 2006-07-05 上海电动工具研究所 Method for shielding clip style sensor
DE102007031787A1 (en) * 2007-07-07 2009-01-08 Stefan Hubrich Magnetostrictive position sensor for monitoring e.g. piston stroke in hydraulic system, has electromagnet designed such that electromagnet operates on magneto-resistive measurement system in active condition
CN206523126U (en) * 2017-02-16 2017-09-26 江门市润宇传感器科技有限公司 Drawing-Core magnetostrictive displacement sensor
CN207081405U (en) * 2017-08-31 2018-03-09 周勇 A kind of high-precision magneto strictive sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1797007A (en) * 2004-12-21 2006-07-05 上海电动工具研究所 Method for shielding clip style sensor
DE102007031787A1 (en) * 2007-07-07 2009-01-08 Stefan Hubrich Magnetostrictive position sensor for monitoring e.g. piston stroke in hydraulic system, has electromagnet designed such that electromagnet operates on magneto-resistive measurement system in active condition
CN206523126U (en) * 2017-02-16 2017-09-26 江门市润宇传感器科技有限公司 Drawing-Core magnetostrictive displacement sensor
CN207081405U (en) * 2017-08-31 2018-03-09 周勇 A kind of high-precision magneto strictive sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
周征等: "《传感器与检测技术》", 30 September 2017, 西安电子科技大学出版社 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109870389A (en) * 2019-04-12 2019-06-11 长春工程学院 Based on magnetostrictive displacement sensor irrigation water coefficient of viscosity detection device and method
CN111396495A (en) * 2020-03-25 2020-07-10 桂林电子科技大学 Shock absorber and commercial car suspension
CN112729479A (en) * 2020-12-23 2021-04-30 北京斯克维思仪表有限公司 Coil type magnetostrictive sensor
WO2022252227A1 (en) * 2021-06-04 2022-12-08 Abb Schweiz Ag Sensing assembly for use in piezoelectric liquid level sensor
CN113432521A (en) * 2021-06-11 2021-09-24 北京奥特美克科技股份有限公司 High-precision displacement sensor
CN114264221A (en) * 2021-12-24 2022-04-01 南昌工程学院 Magnetostrictive displacement sensor for precise control

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Application publication date: 20181019