CN102866366A - Magnetic field measurement device based on giant magneto-impedance effect - Google Patents
Magnetic field measurement device based on giant magneto-impedance effect Download PDFInfo
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- CN102866366A CN102866366A CN2012103602757A CN201210360275A CN102866366A CN 102866366 A CN102866366 A CN 102866366A CN 2012103602757 A CN2012103602757 A CN 2012103602757A CN 201210360275 A CN201210360275 A CN 201210360275A CN 102866366 A CN102866366 A CN 102866366A
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Abstract
The invention discloses a magnetic field measurement device based on giant magneto-impedance effect. The device comprises an excitation source (1), a synchronous rectification signal generator (2), a probe (3), a synchronous rectifier (4) and a servo controller (5), wherein the excitation source (1) is connected with the probe (3) through a printed wire and connected with the synchronous rectification signal generator (2) through a printed wire, the synchronous rectification signal generator (2) is connected with the synchronous rectifier (4) through a printed wire, the synchronous rectifier (4) is connected with the probe (3) through a printed wire and connected with the servo controller (5) through a printed wire, and the servo controller (5) is connected with the probe (3) through a printed wire. The magnetic field measurement device based on the giant magneto-impedance effect has the advantages of high sensitivity, resolution and response speed, small size, low power consumption, good temperature characteristic and high linearity.
Description
Technical field
The present invention relates to a kind of magnetic field measuring device, particularly a kind of magnetic field measuring device based on giant magnetoresistance effect.
Background technology
The measurement of Weak magentic-field has huge application demand at military aspect, such as relying on the terrestrial magnetic field to decide the military domain such as the moonlet of appearance location, the fish submarine mine guiding that relies on ship's magnetism work, inertial navigation earth magnetism complex navigation, magnetic ignition, intelligent paravane, the tachometric survey of High Rotation Speed shell.Along with the development of technology, these use to magnetic measuring device proposed generally that high sensitivity, high resolving power, volume are little, the requirement such as fast response time, low in energy consumption and temperature characterisitic are stable.
The magnetic measuring device that current Weak magentic-field fields of measurement is used mainly is fluxgate, Hall element, GMR etc., fluxgate resolution is high, but response speed is low, GMR and Hall element response frequency height but resolution is slightly low, the equal temperature influence of the two measurement result is larger, and volume and power dissipation ratio are larger.These technology and product can not satisfy developing rapidly of military technology
Summary of the invention
The object of the invention is to provide a kind of magnetic field measuring device based on giant magnetoresistance effect, solves present same device sensitivity and resolution is low, volume is excessive, response speed is slow, power consumption is high problem.
A kind of magnetic field measuring device based on giant magnetoresistance effect comprises: driving source also comprises: detecting head, synchronous rectifier, synchronous rectification signal generator and servo controller.The magnetic-field measurement element of detecting head is the amorphous wire with giant magnetoresistance effect; Driving source adopts CMOS not gate multivibrator; Synchronous rectifier adopts analog switch.
The driving source output terminal is connected with detecting head input end track, the driving source output terminal is connected with synchronous rectification signal generator input end track, the synchronous rectification signal generator output end is connected with synchronous rectifier input end track, the synchronous rectifier input end is connected with detecting head output terminal track, the synchronous rectifier output terminal is connected with servo controller input end track, and the servo controller output terminal is connected with detecting head input end track.
Driving source provides pumping signal for the magnetic-field measurement element amorphous wire material of detecting head, when changing through the axial magnetic field of amorphous wire, detecting head output with changed by the proportional ac voltage signal of measuring magnetic field thereupon, this signal is input to synchronous rectifier, under the control of synchronous rectification signal generator, synchronous rectifier is exported proportional d. c. voltage signal, d. c. voltage signal produces respectively output voltage signal and feedback current signal after regulating through servo controller, this output voltage signal is with proportional through the axial magnetic field of amorphous wire, the feedback current signal returns detecting head by wire, produce with by the opposite magnetic field of measuring magnetic field size equidirectional, pass through the axial magnetic field of amorphous wire in order to balance.
Detecting head adopts the small size design, amorphous wire is the low-power consumption material, all components and parts adopt little encapsulation low-power consumption product, small size and the low-power consumption of magnetic field measuring device have been guaranteed, the high bandwidth of driving source and servo controller has guaranteed the high response speed of magnetic field measuring device, the characteristic of amorphous wire material and the deep negative of servo controller feedback have guaranteed high sensitivity, high resolving power and the good temperature characterisitic of magnetic field measuring device, and negative feedback has guaranteed the high linearity of magnetic field measuring device.This device has high sensitivity, high-resolution characteristics, has simultaneously high response speed; Its size is little, low in energy consumption, good temp characteristic; Has the higher linearity.
Description of drawings
The structured flowchart of a kind of magnetic field measuring device based on giant magnetoresistance effect of Fig. 1.
1. driving source 2. synchronous rectification signal generators 3. detecting heads 4. synchronous rectifiers 5. servo controllers.
Embodiment
A kind of magnetic field measuring device based on giant magnetoresistance effect comprises: driving source 1 also comprises: synchronous rectification signal generator 2, detecting head 3, synchronous rectifier 4, servo controller 5.The magnetic-field measurement element of detecting head is the amorphous wire with giant magnetoresistance effect; Driving source adopts CMOS not gate multivibrator; Synchronous rectifier adopts analog switch.
Driving source 1 output terminal is connected with detecting head 3 input end tracks, driving source 1 output terminal is connected with synchronous rectification signal generator 2 input end tracks, synchronous rectification signal generator 2 output terminals are connected with synchronous rectifier 4 input end tracks, synchronous rectifier 4 input ends are connected with detecting head 3 output terminal tracks, synchronous rectifier 4 output terminals are connected with servo controller 5 input end tracks, and servo controller 5 output terminals are connected with detecting head 3 input end tracks.
Provide pumping signal by driving source 1 for the magnetic-field measurement element amorphous wire material of detecting head 3, when changing through the axial magnetic field of amorphous wire, the ac output voltage of detecting head 3 changes thereupon, this signal is input to synchronous rectifier 4, under the control of synchronous rectification signal generator 2, the proportional d. c. voltage signal of synchronous rectifier 4 outputs, d. c. voltage signal produces respectively output voltage signal and feedback current signal after regulating through servo controller 5, this output voltage signal is with proportional through the axial magnetic field of amorphous wire, the feedback current signal returns detecting head 3, in order to the axial magnetic field of balance process amorphous wire.
Driving source 1 provides pumping signal for the magnetic-field measurement element amorphous wire material of detecting head 3, when changing through the axial magnetic field of amorphous wire, detecting head 3 output with changed by the proportional ac voltage signal of measuring magnetic field thereupon, this signal is input to synchronous rectifier 4, under the control of synchronous rectification signal generator 2, the proportional d. c. voltage signal of synchronous rectifier 4 outputs, d. c. voltage signal produces respectively output voltage signal and feedback current signal after regulating through servo controller 5, this output voltage signal is with proportional through the axial magnetic field of amorphous wire, the feedback current signal returns detecting head 3 by wire, produce with by the opposite magnetic field of measuring magnetic field size equidirectional, pass through the axial magnetic field of amorphous wire in order to balance.Detecting head 3 adopts the small size design, amorphous wire is the low-power consumption material, all components and parts adopt little encapsulation low-power consumption product, small size and the low-power consumption of magnetic field measuring device have been guaranteed, the high bandwidth of driving source 1 and servo controller 5 has guaranteed the high response speed of magnetic field measuring device, the deep negative feedback of the characteristic of amorphous wire material and servo controller 5 has guaranteed high sensitivity, high resolving power and the good temperature characterisitic of magnetic field measuring device, and negative feedback has guaranteed the high linearity of magnetic field measuring device.
Claims (1)
1. magnetic field measuring device based on giant magnetoresistance effect, comprising: driving source (1) characterized by further comprising: synchronous rectification signal generator (2), detecting head (3), synchronous rectifier (4), servo controller (5); The magnetic-field measurement element of detecting head is the amorphous wire with giant magnetoresistance effect; Driving source adopts CMOS not gate multivibrator; Synchronous rectifier adopts analog switch;
Driving source (1) output terminal is connected with detecting head (3) input end track, driving source (1) output terminal is connected with synchronous rectification signal generator (2) input end track, synchronous rectification signal generator (2) output terminal is connected with synchronous rectifier (4) input end track, synchronous rectifier (4) input end is connected with detecting head (3) output terminal track, synchronous rectifier (4) output terminal is connected with servo controller (5) input end track, and servo controller (5) output terminal is connected with detecting head (3) input end track;
Provide pumping signal by driving source (1) for the magnetic-field measurement element amorphous wire material of detecting head (3), when changing through the axial magnetic field of amorphous wire, the ac output voltage of detecting head (3) changes thereupon, this signal is input to synchronous rectifier (4), under the control of synchronous rectification signal generator (2), synchronous rectifier (4) is exported proportional d. c. voltage signal, d. c. voltage signal produces respectively output voltage signal and feedback current signal after regulating through servo controller (5), this output voltage signal is with proportional through the axial magnetic field of amorphous wire, the feedback current signal returns detecting head (3), in order to the axial magnetic field of balance process amorphous wire;
Driving source (1) provides pumping signal for the magnetic-field measurement element amorphous wire material of detecting head (3), when changing through the axial magnetic field of amorphous wire, detecting head (3) output with changed by the proportional ac voltage signal of measuring magnetic field thereupon, this signal is input to synchronous rectifier (4), under the control of synchronous rectification signal generator (2), synchronous rectifier (4) is exported proportional d. c. voltage signal, d. c. voltage signal produces respectively output voltage signal and feedback current signal after regulating through servo controller (5), this output voltage signal is with proportional through the axial magnetic field of amorphous wire, the feedback current signal returns detecting head (3) by wire, produce with by the opposite magnetic field of measuring magnetic field size equidirectional, pass through the axial magnetic field of amorphous wire in order to balance; Detecting head (3) adopts the small size design, amorphous wire is the low-power consumption material, all components and parts adopt little encapsulation low-power consumption product, small size and the low-power consumption of magnetic field measuring device have been guaranteed, the high bandwidth of driving source (1) and servo controller (5) has guaranteed the high response speed of magnetic field measuring device, the deep negative feedback of the characteristic of amorphous wire material and servo controller (5) has guaranteed high sensitivity, high resolving power and the good temperature characterisitic of magnetic field measuring device, and negative feedback has guaranteed the high linearity of magnetic field measuring device.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359388A (en) * | 2014-12-02 | 2015-02-18 | 中国人民解放军军械工程学院 | Processing method of range measurement giant magneto-impedance sensor signal |
| CN104597418A (en) * | 2013-10-30 | 2015-05-06 | Tdk株式会社 | Magnetic field detection device |
| CN104865540A (en) * | 2015-05-25 | 2015-08-26 | 内蒙古工业大学 | Stress-torsion magnetic impedance integration test device of metal fiber |
| CN107533114A (en) * | 2015-04-27 | 2018-01-02 | 艾沃思宾技术公司 | Magnetic field sensor with increased field scope |
| CN110907868A (en) * | 2019-12-13 | 2020-03-24 | 中国人民解放军国防科技大学 | Giant magneto-impedance sensor probe excitation and signal acquisition synchronization system and giant magneto-impedance sensor |
| CN111896896A (en) * | 2019-05-06 | 2020-11-06 | 上海交通大学 | Giant magneto-impedance magnetic sensor based on magneto-electric double-resonance mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104597418A (en) * | 2013-10-30 | 2015-05-06 | Tdk株式会社 | Magnetic field detection device |
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| CN107533114A (en) * | 2015-04-27 | 2018-01-02 | 艾沃思宾技术公司 | Magnetic field sensor with increased field scope |
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| CN104865540B (en) * | 2015-05-25 | 2017-10-10 | 内蒙古工业大学 | The stress twisted magnetic impedance synthesis test device of metallic fiber |
| CN111896896A (en) * | 2019-05-06 | 2020-11-06 | 上海交通大学 | Giant magneto-impedance magnetic sensor based on magneto-electric double-resonance mode |
| CN110907868A (en) * | 2019-12-13 | 2020-03-24 | 中国人民解放军国防科技大学 | Giant magneto-impedance sensor probe excitation and signal acquisition synchronization system and giant magneto-impedance sensor |
| CN110907868B (en) * | 2019-12-13 | 2022-09-02 | 中国人民解放军国防科技大学 | Giant magneto-impedance sensor probe excitation and signal acquisition synchronization method and system and giant magneto-impedance sensor |
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Application publication date: 20130109 |