CN107450036B - Self-injection locking formula concatenated flux door sensor and implementation - Google Patents
Self-injection locking formula concatenated flux door sensor and implementation Download PDFInfo
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- CN107450036B CN107450036B CN201710588369.2A CN201710588369A CN107450036B CN 107450036 B CN107450036 B CN 107450036B CN 201710588369 A CN201710588369 A CN 201710588369A CN 107450036 B CN107450036 B CN 107450036B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
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Abstract
It is to be connected and composed by voltage-current converter circuit via fluxgate magnetic core, instrument amplifier, integrating circuit, filter circuit, amplifying circuit and signal deteching circuit and signal acquisition and cross correlation algorithm processing the present invention relates to a kind of self-injection locking formula concatenated flux door sensor and implementation.On the basis of concatenated flux door sensor, self-injection locking link is added, realizes the low noise magnetic-field measurement of fluxgate sensor.With it is existing it is similar compared with, not needing dynamic excitation signal can work normally, the locking of frequency of oscillation is realized with the locking signal of frequency by injection and oscillator signal, reduce the overall noise of sensor, adjust the frequency of Injection Signal in real time by the frequecy characteristic of extract real-time oscillator signal, remain that the optimum noise inhibitory effect of injection locking, test result show that the background noise power spectral density of self seeding formula concatenated flux door sensor can reduce 15dB compared with no self-injection locking concatenated flux door sensor.
Description
Technical field:
The present invention relates to a kind of fluxgate sensor, especially a kind of low noise realized by self-injection locking mode
Concatenated flux door sensor.
Background technique:
Flux-gate phenomenon is a kind of generally existing electromagnetic induction phenomenon, and the basic principle of fluxgate sensor submits to method
The law of electromagnetic induction is drawn, magnetic signal is converted into electric signal using the magnetic hysteresis saturated characteristic of magnetic core and is measured.Concatenated flux
Overdamp bistable state nonlinear characteristic of the door sensor based on magnetic core utilizes coupling according to the coupled oscillations principle of nonlinear system
The sensitivity that co oscillation feature changes external magnetic field detects magnetic field of the goal.US7420366B1"Coupled
Nonlinear sensor system " and US7528606B1 " Coupled nonlinear sensor system for
Sensing a time-dependent target signal and method of assembling the system " it is public
A kind of design of concatenated flux door sensor is opened, and application time difference detection scheme quantifies external magnetic field.
The Low Noise Design of fluxgate sensor is realized, generally improved from sonde configuration, current excitation precision improvement and
Detection scheme improvement etc. carries out, " the Fluxgate sensor integrated having as disclosed in US7212001
pick-up coil mounted on excitation coil in printed circuit board and method
For manufacturing the same ", " exciting circuit of flux gate sensor " disclosed in CN101604966 and
" bidirectional magnetic saturated time difference fluxgate sensor " disclosed in CN101545958.
US9140765B1 " Injection locked nonlinear dynamic system " discloses a kind of use
External signal generating device generates Injection Signal to concatenated flux door into line-locked method, but infuses during magnetic-field measurement
The frequency for entering signal can not be adjusted in real time (according to the working principle of concatenated flux door, when magnetic field of the goal size variation
The frequency of coupled oscillations can also change；Also, injection locking for noise inhibitory effect and Injection Signal with it is to be locked
The frequency difference of signal is related), thereby resulting in weakens injection locking for the noise suppression effect of concatenated flux door sensor
Even fail.
Summary of the invention:
The object of the invention is that scarce in terms of being locked in concatenated flux door sensor noise suppressed for existing injection
It falls into, a kind of fluxgate sensor and implementation for realizing low noise magnetic-field measurement by self-injection locking mode is provided.
The purpose of the present invention is what is be achieved through the following technical solutions:
Self-injection locking formula concatenated flux door sensor is by voltage-current converter circuit a16) via fluxgate magnetic core point
The excitation coil a113 of branch a11, the induction coil a115 of fluxgate magnetic core branch a11, instrument amplifier a12, integrating circuit
A13, filter circuit a14, amplifying circuit a15, voltage-current converter circuit b26 connection, filter circuit a14 via frequency of oscillation from
Dynamic identification and Injection Signal generating unit a17 are connect with the holding (out) coil a114 of fluxgate magnetic core branch a11；
Excitation coil a113 of the voltage-current converter circuit b26 via fluxgate magnetic core branch b21, fluxgate magnetic core branch
Induction coil a115, instrument amplifier b22, integrating circuit b23, filter circuit b24, amplifying circuit b25 and the voltage and current of b21
Conversion circuit c36 connection, filter circuit b24 is via frequency of oscillation automatic identification and Injection Signal generating unit b27 and fluxgate
The holding (out) coil a114 connection of probe branch b21；
Excitation coil a113 of the voltage-current converter circuit c36 via fluxgate magnetic core branch c31, fluxgate magnetic core branch
Induction coil a115, instrument amplifier c32, integrating circuit c33, filter circuit c34, amplifying circuit c35 and the voltage and current of c31
Conversion circuit a16 connection, filter circuit c34 is via frequency of oscillation automatic identification and Injection Signal generating unit c37 and fluxgate
The holding (out) coil a114 connection of probe branch c31；
Signal deteching circuit a18 is connect with amplifying circuit a15, is connect by signal deteching circuit b28 with amplifying circuit b25,
It is connect by signal deteching circuit c38 with amplifying circuit c35, signal deteching circuit a18, signal deteching circuit b28, signal detection electricity
Road c38 is connected and composed with signal acquisition and cross correlation algorithm processing 19.
Fluxgate magnetic core branch a11 is placed in triangular prism-shaped and supports in the groove opened on 410 faces, fluxgate magnetic core branch
B21) it is placed in triangular prism-shaped to support in the groove opened on 420 faces, fluxgate magnetic core branch c31) it is placed in triangular prism-shaped support 430
In the groove opened on face, fluxgate magnetic core branch a11, fluxgate magnetic core branch b21 and fluxgate magnetic core branch c31) by
The identical excitation coil of parameter, induction coil, holding (out) coil, coil support skeleton and magnetic core constitute fluxgate magnetic core.
Induction coil a115, which is connect via instrument amplifier a12 with integrating circuit a13, realizes induced electromotive force to magnetic flux
Conversion, integrating circuit a13 is connected with filter circuit a14, the output end of filter circuit a14 via frequency of oscillation automatic identification and
Injection Signal generating unit a17 is connected with holding (out) coil a114, realizes the self-injection locking of fluxgate magnetic core branch a11；Induction
Coil b215, which is connect via instrument amplifier b22 with integrating circuit b23, realizes the conversion of induced electromotive force to magnetic flux, integral electricity
Road b23 is connected with filter circuit b24, and the output end of filter circuit b24 occurs via frequency of oscillation automatic identification and Injection Signal
Unit b27 is connected with holding (out) coil b214, realizes the self-injection locking of fluxgate magnetic core branch b21；Induction coil c315 via
Instrument amplifier c32 is connect with integrating circuit c33 realizes the conversion of induced electromotive force to magnetic flux, integrating circuit c33 and filtering
Circuit c34 is connected, and the output end of filter circuit c34 is via frequency of oscillation automatic identification and Injection Signal generating unit c37 and lock
Alignment circle c314 is connected, and realizes the self-injection locking of fluxgate magnetic core branch c31.
Self-injection locking has two kinds of implementations of digital form and analog form:
--- digital form realizes that i.e. frequency of oscillation automatic identification and Injection Signal generating unit a17 is by analog-digital converter
A170, microprocessor a171, digital analog converter a172 and power amplifier a173 composition；Frequency of oscillation automatic identification and injection letter
Number generating unit b27 is by analog-digital converter b270, microprocessor b271, digital analog converter b272 and power amplifier b273 group
At；Frequency of oscillation automatic identification and Injection Signal generating unit c37 are turned by analog-digital converter c370, microprocessor c371, digital-to-analogue
Parallel operation c372 and power amplifier c373 composition.
--- analog form realizes that is, frequency of oscillation automatic identification and Injection Signal generating unit a17 are by isolation amplification electricity
Road a174, bandwidth-limited circuit a175, power amplifier a176 composition；Frequency of oscillation automatic identification and Injection Signal generating unit
B27 is made of isolating amplifier circuit b274, bandwidth-limited circuit b275, power amplifier b276；Frequency of oscillation automatic identification and
Injection Signal generating unit c37 is made of isolating amplifier circuit c374, bandwidth-limited circuit c375, power amplifier c376.
Sensor magnetic core uses the cobalt of the annealed processing of soft magnetic materials with obvious overdamp bistable state nonlinear characteristic
Base amorphous band.
Triangular prism-shaped support and coil support skeleton are selected from polyether-ether-ketone, nylon, polyetherimide, polyphenylene sulfide, polyphenyl
One of imipramine, polytrifluorochloroethylene or the low deformation non-magnetic material of resin, through CNC lathe or 3D printing technique processing system
At.
The utility model has the advantages that self-injection locking formula concatenated flux door sensor is added on the basis of concatenated flux door sensor
Self-injection locking link realizes fluxgate sensor using injection locking for the inhibiting effect of oscillator signal phase noise
Low noise magnetic-field measurement.The self-injection locking concatenated flux door sensor that the present invention designs and existing fluxgate sensor product phase
Than not needing dynamic excitation signal can work normally, and is realized and shaken with the locking signal of frequency by injection and oscillator signal
The locking for swinging frequency, advantageously reduces the overall noise of sensor, and weak magnetic resolution capability may be implemented on the basis of existing fluxgate
Promotion more than one magnitude；Compared with disclosed in US9140765B1 " Novel magnetic flux door sensor ", the cascade of self-injection locking formula
Fluxgate sensor adjusts the frequency of Injection Signal by the frequecy characteristic of extract real-time oscillator signal in real time, remains injection
The optimum noise inhibitory effect of locking is more advantageous to the design of low noise Magnetic Sensor, and answers more suitable for actual engineering
With the background noise power spectral density of the tested results display self seeding formula concatenated flux door sensor and no self-injection locking
Concatenated flux door, which is compared, can reduce 15dB.
Detailed description of the invention:
Fig. 1 self-injection locking formula concatenated flux door sensor structure chart
11 discrete winding structure figure of Fig. 2 fluxgate magnetic core branch
21 discrete winding structure figure of Fig. 3 fluxgate magnetic core branch
31 discrete winding structure figure of Fig. 4 fluxgate magnetic core branch
The interactive winding structure figure of Fig. 5 fluxgate magnetic core branch 11
The interactive winding structure figure of Fig. 6 fluxgate magnetic core branch 21
The interactive winding structure figure of Fig. 7 fluxgate magnetic core branch 31
The triangular prism-shaped of Fig. 8 fluxgate magnetic core branch supports 410 face structure charts
The triangular prism-shaped of Fig. 9 fluxgate magnetic core branch supports 420 face structure charts
The triangular prism-shaped of Figure 10 fluxgate magnetic core branch supports 430 face structure charts
1 implementation figure of Figure 11 self-injection locking embodiment
2 implementation figure of Figure 12 self-injection locking embodiment
The actual measurement comparison of Figure 13 self-injection locking formula concatenated flux door sensor background noise
11 fluxgate magnetic core branch a, 12 instrument amplifier a, 13 integrating circuit a, 14 filter circuit a, 15 amplifying circuit a,
16 voltage-current converter circuit a, 17 frequency of oscillation automatic identifications and Injection Signal generating unit a, 18 signal deteching circuit a, 19
Signal acquisition and cross correlation algorithm processing, 21 fluxgate magnetic core branch b, 22 instrument amplifier b, 23 integrating circuit b, 24 filtered electricals
Road b, 25 amplifying circuit b, 26 voltage-current converter circuit b, 27 frequency of oscillation automatic identifications and Injection Signal generating unit b, 28
The signal deteching circuit instrument amplifier of b, 31 fluxgate magnetic core branch c, 32 c, 33 integrating circuit c, 34 filter circuit c, 35 amplify
Circuit c, 36 voltage-current converter circuit c, 37 frequency of oscillation automatic identifications and Injection Signal generating unit c, 38 signal detections are electric
Road c, the support of 40 triangular prism-shapeds；
110 coil support skeleton a, 111,116 mounting hole a, 112 magnetic core a, 113 excitation coil a, 114 holding (out) coil a,
115 induction coil a, 170 analog-digital converter a, 171 microprocessor a, 172 digital analog converter a, 173,176 power amplifier a,
174 isolating amplifier circuit a, 175 bandwidth-limited circuit a；
210 coil support skeleton b, 211,216 mounting hole b, 212 magnetic core b, 213 excitation coil b, 214 holding (out) coil b,
215 induction coil b, 270 analog-digital converter b, 271 microprocessor b, 272 digital analog converter b, 273,276 power amplifier b,
274 isolating amplifier circuit b, 275 bandwidth-limited circuit b；
310 coil support skeleton c, 311,316 mounting hole c, 312 magnetic core c, 313 excitation coil c, 314 holding (out) coil c,
315 induction coil c, 370 analog-digital converter c, 371 microprocessor c, 372 digital analog converter c, 373,376 power amplifier c,
374 isolating amplifier circuit c, 375 band logicals；
410 faceted pebbles one, 411 mounting holes one, 412 mounting holes two, 420 faceted pebbles two, 421 mounting holes three, 422 mounting holes four,
430 faceted pebbles three, 431 mounting holes five, 432 mounting holes six.
Specific embodiment:
The present invention is described in further detail with reference to the accompanying drawings and examples:
Self-injection locking formula concatenated flux door sensor is by voltage-current converter circuit a16, fluxgate magnetic core branch
The excitation coil a113 of a11, the induction coil a115 of fluxgate magnetic core branch a11, instrument amplifier a12, integrating circuit a13,
Filter circuit a14, amplifying circuit a15, voltage-current converter circuit b26 connection, filter circuit a14 know automatically via frequency of oscillation
Not and Injection Signal generating unit a17 is connect with the holding (out) coil a114 of fluxgate magnetic core branch a11；Voltage-current converter circuit
B26 is put via the excitation coil a113 of fluxgate magnetic core branch b21, the induction coil a115 of fluxgate magnetic core branch b21, instrument
Big device b22, integrating circuit b23, filter circuit b24, amplifying circuit b25 are connect with voltage-current converter circuit c36, filter circuit
B24 is via frequency of oscillation automatic identification and the holding (out) coil a114 of Injection Signal generating unit b27 and fluxgate magnetic core branch b21
Connection；Excitation coil a113, fluxgate magnetic core branch c31 of the voltage-current converter circuit c36 via fluxgate magnetic core branch c31
Induction coil a115, instrument amplifier c32, integrating circuit c33, filter circuit c34, amplifying circuit c35 and voltage and current turn
Circuit a16 connection is changed, filter circuit c34 is visited via frequency of oscillation automatic identification and Injection Signal generating unit c37 and fluxgate
The holding (out) coil a114 connection of head branch c31.Signal deteching circuit a18 is connect with amplifying circuit a15, by signal deteching circuit
B28 is connect with amplifying circuit b25, is connect by signal deteching circuit c38 with amplifying circuit c35, signal deteching circuit a18, signal
Detection circuit b28, signal deteching circuit c38 are connect with signal acquisition and cross correlation algorithm processing 19.
Fluxgate magnetic core branch a11, fluxgate magnetic core branch b 21, fluxgate magnetic core branch c 31 can be used discrete around
Group and interactive coil probe structure.Fluxgate magnetic core branch a11 is by coil support skeleton a110, mounting hole a111, magnetic core
A112, excitation coil a113, holding (out) coil a114, induction coil a115, mounting hole a116 are constituted；Fluxgate magnetic core branch b21
By coil support skeleton b210, mounting hole b211, magnetic core b212, excitation coil b213, holding (out) coil b214, induction coil
B215, mounting hole b216 are constituted；Fluxgate magnetic core branch c31 by coil support skeleton c310, mounting hole c311, magnetic core c312,
Excitation coil c313, holding (out) coil c314, induction coil c315, mounting hole c316 are constituted.Coil support skeleton a110, coil branch
Support bone frame b210, coil support skeleton c310 are process by non-magnetic material, and polyether-ether-ketone, nylon, polyethers can be selected in material
The low deformation non-magnetic material such as acid imide, polyphenylene sulfide, polyphenyl imipramine, polytrifluorochloroethylene, resin, beats through CNC lathe or 3D
Print technique is processed into.Magnetic core a112, magnetic core b 212, magnetic core c 312 are made of the annealed technique of cobalt base amorphous band.
Fluxgate magnetic core branch a11 is installed on the rib of triangular prism-shaped support 40 by mounting hole 1, mounting hole 2 412
On face 1, wherein mounting hole 1 and mounting hole 2 412 are located on the center line in one 410 face of faceted pebble；Fluxgate magnetic core point
Branch b21 is installed on 2 420 face of faceted pebble of triangular prism-shaped support 40 by mounting hole 3 421, mounting hole 4 422, wherein installing
Hole 3 421 and mounting hole 4 422 are located on the center line in one 420 face of faceted pebble；Fluxgate magnetic core branch c31 passes through mounting hole five
431, mounting hole 6 432 is installed on 3 430 face of faceted pebble of triangular prism-shaped support 40, wherein mounting hole 5 431 and mounting hole six
432 are located on the center line in 3 430 face of faceted pebble.Triangular prism support 40 is hollow triangular-prism structure, is process by non-magnetic material,
It is low that polyether-ether-ketone, nylon, polyetherimide, polyphenylene sulfide, polyphenyl imipramine, polytrifluorochloroethylene, resin etc. can be selected in material
Deformation non-magnetic material is processed into through CNC lathe or 3D printing technique.
The self-injection locking of concatenated flux door sensor realizes the inhibition to fluxgate sensor background noise.Induction coil
A115 connect the conversion for realizing induced electromotive force to magnetic flux, integrating circuit via instrument amplifier a12 with integrating circuit a13
A13 is connected via filter circuit a14, amplifying circuit a15, voltage-current converter circuit b26 with excitation coil b213, realizes magnetic flux
The magnetic flux of gate probe branch a11 and fluxgate magnetic core branch a21 cascades；Induction coil b215 is via instrument amplifier b22 and product
Parallel circuit b23 connection realizes induced electromotive force to the conversion of magnetic flux, and integrating circuit b23 is via filter circuit b24, amplifying circuit
B25, voltage-current converter circuit c36 are connected with excitation coil c313, realize fluxgate magnetic core branch b21 and fluxgate magnetic core point
The magnetic flux of branch c31 cascades；Induction coil c315, which is connect via instrument amplifier c32 with integrating circuit c33, realizes induced electromotive force
To the conversion of magnetic flux, integrating circuit c33 voltage-current converter circuit a16 and swashs via filter circuit c34, amplifying circuit c35
It encourages coil a113 to be connected, realizes that the magnetic flux of fluxgate magnetic core branch c31 and fluxgate magnetic core branch a11 cascades.Induction coil
A115 connect the conversion for realizing induced electromotive force to magnetic flux, integrating circuit via instrument amplifier a12 with integrating circuit a13
A13 is connected with filter circuit a14, and the output end of filter circuit a14 occurs single via frequency of oscillation automatic identification and Injection Signal
First a17 is connected with holding (out) coil a114, realizes the self-injection locking of fluxgate magnetic core branch a11；Induction coil b215 is via instrument
Table amplifier b22 is connect with integrating circuit b23 realizes the conversion of induced electromotive force to magnetic flux, integrating circuit b23 and filtered electrical
Road b24 is connected, and the output end of filter circuit b24 is via frequency of oscillation automatic identification and Injection Signal generating unit b27 and locking
Coil b214 is connected, and realizes the self-injection locking of fluxgate magnetic core branch b21；Induction coil c315 is via instrument amplifier c32
It is connect with integrating circuit c33 and realizes the conversion of induced electromotive force to magnetic flux, integrating circuit c33 is connected with filter circuit c34, filters
The output end of wave circuit c34 is connected via frequency of oscillation automatic identification and Injection Signal generating unit c37 with holding (out) coil c314,
Realize the self-injection locking of fluxgate magnetic core branch c31.Amplifying circuit a15, amplifying circuit b25, amplifying circuit c35 respectively via
Signal deteching circuit 18, signal deteching circuit 28, signal deteching circuit 38 handle 19 with signal acquisition and cross correlation algorithm jointly
It is connected, realizes signal detection.
Embodiment 1
The self-injection locking of self-injection locking formula concatenated flux door sensor is realized by digital form, specifically, oscillation
Frequency automatic identification and Injection Signal generating unit a17 are by analog-digital converter a170, microprocessor a171, digital analog converter a172
It is formed with power amplifier a173；Frequency of oscillation automatic identification and Injection Signal generating unit b27 are by analog-digital converter b270, micro-
Processor b271, digital analog converter b272 and power amplifier b273 composition；Frequency of oscillation automatic identification and Injection Signal occur
Unit c37 is made of analog-digital converter c370, microprocessor c371, digital analog converter c372 and power amplifier c373.
Fluxgate magnetic core branch a11, fluxgate magnetic core branch b 21, fluxgate magnetic core branch c 31 use discrete winding
Sonde configuration.Fluxgate magnetic core branch a11 is by coil support skeleton a110, mounting hole a111, magnetic core a112, excitation coil
A113, holding (out) coil a114, induction coil a115, mounting hole a116 are constituted；Fluxgate magnetic core branch b21 is by coil support skeleton
B210, mounting hole b211, magnetic core b212, excitation coil b213, holding (out) coil b214, induction coil b215, mounting hole b216 structure
At；Fluxgate magnetic core branch c31 is by coil support skeleton c310, mounting hole c311, magnetic core c312, excitation coil c313, locking
Coil c314, induction coil c315, mounting hole c316 are constituted.Coil support skeleton a110, coil support skeleton b210, coil branch
Support bone frame c310 is process by non-magnetic material, and material can be selected polyether-ether-ketone, nylon, polyetherimide, polyphenylene sulfide, gather
The low deformation non-magnetic material such as benzimidazole, polytrifluorochloroethylene, resin, is processed into through CNC lathe or 3D printing technique.Magnetic core
A112, magnetic core b 212, magnetic core c 312 are made of the annealed technique of cobalt base amorphous band.
Fluxgate magnetic core branch a11 is installed on the rib of triangular prism-shaped support 40 by mounting hole 1, mounting hole 2 412
On face 1, wherein mounting hole 1 and mounting hole 2 412 are located on the center line of faceted pebble 1；Fluxgate magnetic core branch
B21 is installed on the faceted pebble 2 420 of triangular prism-shaped support 40 by mounting hole 3 421, mounting hole 4 422, wherein mounting hole three
421 and mounting hole 4 422 be located on the center line of faceted pebble 1；Fluxgate magnetic core branch c31 passes through mounting hole 5 431, installation
Hole 6 432 is installed on the faceted pebble 3 430 of triangular prism-shaped support 40, and wherein mounting hole 5 431 and mounting hole 6 432 are located at faceted pebble
On 3 430 center line.Triangular prism support 40 is hollow triangular-prism structure, is process by non-magnetic material, and material can be selected poly-
The low deformation non-magnetic material such as ether ether ketone, nylon, polyetherimide, polyphenylene sulfide, polyphenyl imipramine, polytrifluorochloroethylene, resin,
It is processed into through CNC lathe or 3D printing technique.
The self-injection locking of concatenated flux door sensor realizes the inhibition to fluxgate sensor background noise.Induction coil
A115 connect the conversion for realizing induced electromotive force to magnetic flux, integrating circuit via instrument amplifier a12 with integrating circuit a13
A13 is connected via filter circuit a14, amplifying circuit a15, voltage-current converter circuit b26 with excitation coil b213, realizes magnetic flux
The magnetic flux of gate probe branch a11 and fluxgate magnetic core branch a21 cascades；Induction coil b215 is via instrument amplifier b22 and product
Parallel circuit b23 connection realizes induced electromotive force to the conversion of magnetic flux, and integrating circuit b23 is via filter circuit b24, amplifying circuit
B25, voltage-current converter circuit c36 are connected with excitation coil c313, realize fluxgate magnetic core branch b21 and fluxgate magnetic core point
The magnetic flux of branch c31 cascades；Induction coil c315, which is connect via instrument amplifier c32 with integrating circuit c33, realizes induced electromotive force
To the conversion of magnetic flux, integrating circuit c33 voltage-current converter circuit a16 and swashs via filter circuit c34, amplifying circuit c35
It encourages coil a113 to be connected, realizes that the magnetic flux of fluxgate magnetic core branch c31 and fluxgate magnetic core branch a11 cascades.Induction coil
A115 connect the conversion for realizing induced electromotive force to magnetic flux, integrating circuit via instrument amplifier a12 with integrating circuit a13
A13 is connected with filter circuit a14, and the output end of filter circuit a14 occurs single via frequency of oscillation automatic identification and Injection Signal
First a17 is connected with holding (out) coil a114, realizes the self-injection locking of fluxgate magnetic core branch a11；Induction coil b215 is via instrument
Table amplifier b22 is connect with integrating circuit b23 realizes the conversion of induced electromotive force to magnetic flux, integrating circuit b23 and filtered electrical
Road b24 is connected, and the output end of filter circuit b24 is via frequency of oscillation automatic identification and Injection Signal generating unit b27 and locking
Coil b214 is connected, and realizes the self-injection locking of fluxgate magnetic core branch b21；Induction coil c315 is via instrument amplifier c32
It is connect with integrating circuit c33 and realizes the conversion of induced electromotive force to magnetic flux, integrating circuit c33 is connected with filter circuit c34, filters
The output end of wave circuit c34 is connected via frequency of oscillation automatic identification and Injection Signal generating unit c37 with holding (out) coil c314,
Realize the self-injection locking of fluxgate magnetic core branch c31.Amplifying circuit a15, amplifying circuit b25, amplifying circuit c35 respectively via
Signal deteching circuit 18, signal deteching circuit 28, signal deteching circuit 38 handle 19 with signal acquisition and cross correlation algorithm jointly
It is connected, realizes signal detection.
Embodiment 2
The self-injection locking of self-injection locking formula concatenated flux door sensor is realized by analog form, specifically, oscillation
Frequency automatic identification and Injection Signal generating unit a17 are by isolating amplifier circuit a174, bandwidth-limited circuit a175, power amplification
Device a176 composition；Frequency of oscillation automatic identification and Injection Signal generating unit b27 are by isolating amplifier circuit b274, bandpass filtering electricity
Road b275, power amplifier b276 composition；Frequency of oscillation automatic identification and Injection Signal generating unit c37 are by isolating amplifier circuit
C374, bandwidth-limited circuit c375, power amplifier c376 composition.
Fluxgate magnetic core branch a11, fluxgate magnetic core branch b 21, fluxgate magnetic core branch c 31 are using interactive winding
Sonde configuration.
Fluxgate magnetic core branch a11 by coil support skeleton a110, mounting hole a111, magnetic core a112, excitation coil a113,
Holding (out) coil a114, induction coil a115, mounting hole a116 are constituted；Fluxgate magnetic core branch b21 by coil support skeleton b210,
Mounting hole b211, magnetic core b212, excitation coil b213, holding (out) coil b214, induction coil b215, mounting hole b216 are constituted；Magnetic
Open gate pops one's head in branch c31 by coil support skeleton c310, mounting hole c311, magnetic core c312, excitation coil c313, holding (out) coil
C314, induction coil c315, mounting hole c316 are constituted.Coil support skeleton a110, coil support skeleton b210, coil support bone
Frame c310 is process by non-magnetic material, and polyether-ether-ketone, nylon, polyetherimide, polyphenylene sulfide, polyphenyl third can be selected in material
The low deformation non-magnetic material such as imidazoles, polytrifluorochloroethylene, resin, is processed into through CNC lathe or 3D printing technique.Magnetic core
A112, magnetic core b 212, magnetic core c 312 are made of the annealed technique of cobalt base amorphous band.
Fluxgate magnetic core branch a11 is installed on the rib of triangular prism-shaped support 40 by mounting hole 1, mounting hole 2 412
On one 410 face of face, wherein mounting hole 1 and mounting hole 2 412 are located on the center line of faceted pebble 1；Fluxgate magnetic core point
Branch b21 is installed on the faceted pebble 2 420 of triangular prism-shaped support 40 by mounting hole 3 421, mounting hole 4 422, wherein mounting hole
3 421 and mounting hole 4 422 be located on the center line of faceted pebble 1；Fluxgate magnetic core branch c31 passes through mounting hole 5 431, peace
Dress hole 6 432 is installed on the faceted pebble 3 430 of triangular prism-shaped support 40, and wherein mounting hole 5 431 and mounting hole 6 432 are located at rib
On the center line in face 3 430.Triangular prism support 40 is hollow triangular-prism structure, is process by non-magnetic material, and material can be selected
The low deformation such as polyether-ether-ketone, nylon, polyetherimide, polyphenylene sulfide, polyphenyl imipramine, polytrifluorochloroethylene, resin are without magnetic material
Material, is processed into through CNC lathe or 3D printing technique.
The self-injection locking of concatenated flux door sensor realizes the inhibition to fluxgate sensor background noise.Induction coil
A115 connect the conversion for realizing induced electromotive force to magnetic flux, integrating circuit via instrument amplifier a12 with integrating circuit a13
A13 is connected via filter circuit a14, amplifying circuit a15, voltage-current converter circuit b26 with excitation coil b213, realizes magnetic flux
The magnetic flux of gate probe branch a11 and fluxgate magnetic core branch a21 cascades；Induction coil b215 is via instrument amplifier b22 and product
Parallel circuit b23 connection realizes induced electromotive force to the conversion of magnetic flux, and integrating circuit b23 is via filter circuit b24, amplifying circuit
B25, voltage-current converter circuit c36 are connected with excitation coil c313, realize fluxgate magnetic core branch b21 and fluxgate magnetic core point
The magnetic flux of branch c31 cascades；Induction coil c315, which is connect via instrument amplifier c32 with integrating circuit c33, realizes induced electromotive force
To the conversion of magnetic flux, integrating circuit c33 voltage-current converter circuit a16 and swashs via filter circuit c34, amplifying circuit c35
It encourages coil a113 to be connected, realizes that the magnetic flux of fluxgate magnetic core branch c31 and fluxgate magnetic core branch a11 cascades.Induction coil
A115 connect the conversion for realizing induced electromotive force to magnetic flux, integrating circuit via instrument amplifier a12 with integrating circuit a13
A13 is connected with filter circuit a14, and the output end of filter circuit a14 occurs single via frequency of oscillation automatic identification and Injection Signal
First a17 is connected with holding (out) coil a114, realizes the self-injection locking of fluxgate magnetic core branch a11；Induction coil b215 is via instrument
Table amplifier b22 is connect with integrating circuit b23 realizes the conversion of induced electromotive force to magnetic flux, integrating circuit b23 and filtered electrical
Road b24 is connected, and the output end of filter circuit b24 is via frequency of oscillation automatic identification and Injection Signal generating unit b27 and locking
Coil b214 is connected, and realizes the self-injection locking of fluxgate magnetic core branch b21；Induction coil c315 is via instrument amplifier c32
It is connect with integrating circuit c33 and realizes the conversion of induced electromotive force to magnetic flux, integrating circuit c33 is connected with filter circuit c34, filters
The output end of wave circuit c34 is connected via frequency of oscillation automatic identification and Injection Signal generating unit c37 with holding (out) coil c314,
Realize the self-injection locking of fluxgate magnetic core branch c31.Amplifying circuit a15, amplifying circuit b25, amplifying circuit c35 respectively via
Signal deteching circuit 18, signal deteching circuit 28, signal deteching circuit 38 handle 19 with signal acquisition and cross correlation algorithm jointly
It is connected, realizes signal detection.
Claims (6)
1. a kind of self-injection locking formula concatenated flux door sensor, which is characterized in that be by voltage-current converter circuit a (16)
Via the excitation coil a (113) of fluxgate magnetic core branch a (11), fluxgate magnetic core branch a (11) induction coil a (115),
Instrument amplifier a (12), integrating circuit a (13), filter circuit a (14), amplifying circuit a (15) and signal deteching circuit a (18)
It is connect with signal acquisition and cross correlation algorithm processing (19), the holding (out) coil a (114) of fluxgate magnetic core branch a (11) is via vibration
It swings frequency automatic identification and Injection Signal generating unit a (17) is connect with filter circuit a (14)；
Excitation coil b (213), fluxgate magnetic core point of the voltage-current converter circuit b (26) via fluxgate magnetic core branch b (21)
Induction coil b (215), instrument amplifier b (22), integrating circuit b (23), the filter circuit b (24), amplifying circuit b of branch b (21)
(25) it is connect with signal deteching circuit b (28) with signal acquisition and cross correlation algorithm processing (19), fluxgate magnetic core branch b (21)
Holding (out) coil b (214) via frequency of oscillation automatic identification and Injection Signal generating unit b (27) and filter circuit b (24) even
It connects；
Excitation coil c (313), fluxgate magnetic core point of the voltage-current converter circuit c (36) via fluxgate magnetic core branch c (31)
Induction coil c (315), instrument amplifier c (32), integrating circuit c (33), the filter circuit c (34), amplifying circuit c of branch c (31)
(35) it is connect with signal deteching circuit c (38) with signal acquisition and cross correlation algorithm processing (19), fluxgate magnetic core branch c (31)
Holding (out) coil c (314) via frequency of oscillation automatic identification and Injection Signal generating unit c (37) and filter circuit c (34) even
It connects；
Amplifying circuit a (15) is connect with voltage-current converter circuit b (26), amplifying circuit b (25) and voltage-current converter circuit
C (36) connection, amplifying circuit c (35) are connect with voltage-current converter circuit a (16).
2. self-injection locking formula concatenated flux door sensor described in accordance with the claim 1, which is characterized in that fluxgate magnetic core point
Branch a (11) is placed in the groove opened on the first faceted pebble (410) face of triangular prism-shaped support (40), fluxgate magnetic core branch b
(21) it is placed in the groove opened on the second faceted pebble (420) face of triangular prism-shaped support (40), fluxgate magnetic core branch c (31)
It is placed in the groove opened on third faceted pebble (430) face of triangular prism-shaped support (40), fluxgate magnetic core branch a (11), magnetic flux
Gate probe branch b (21) and fluxgate magnetic core branch c (31) are by the identical excitation coil of parameter, induction coil, lock-in line
Circle, coil support skeleton and magnetic core constitute fluxgate magnetic core.
3. self-injection locking formula concatenated flux door sensor described in accordance with the claim 1, which is characterized in that induction coil a
(115) it is connect via instrument amplifier a (12) with integrating circuit a (13) and realizes the conversion of induced electromotive force to magnetic flux, integral
Circuit a (13) is connected with filter circuit a (14), and the output end of filter circuit a (14) is via frequency of oscillation automatic identification and injection
Signal generating unit a (17) is connected with holding (out) coil a (114), realizes the self-injection locking of fluxgate magnetic core branch a (11)；Sense
It answers coil b (215) to connect via instrument amplifier b (22) with integrating circuit b (23) and realizes that induced electromotive force turns to magnetic flux
It changes, integrating circuit b (23) is connected with filter circuit b (24), and the output end of filter circuit b (24) is via frequency of oscillation automatic identification
And Injection Signal generating unit b (27) is connected with holding (out) coil b (214), realizes the self seeding lock of fluxgate magnetic core branch b (21)
It is fixed；Induction coil c (315), which is connect via instrument amplifier c (32) with integrating circuit c (33), realizes induced electromotive force to magnetic flux
Conversion, integrating circuit c (33) is connected with filter circuit c (34), and the output end of filter circuit c (34) is automatic via frequency of oscillation
Identification and Injection Signal generating unit c (37) are connected with holding (out) coil c (314), realize infusing certainly for fluxgate magnetic core branch c (31)
Enter locking.
4. self-injection locking formula concatenated flux door sensor described in accordance with the claim 1, which is characterized in that self-injection locking has
Two kinds of implementations of digital form and analog form:
--- digital form realizes that i.e. frequency of oscillation automatic identification and Injection Signal generating unit a (17) is by analog-digital converter a
(170), microprocessor a (171), digital analog converter a (172) and power amplifier a (173) composition；Frequency of oscillation automatic identification
And Injection Signal generating unit b (27) is by analog-digital converter b (270), microprocessor b (271), digital analog converter b (272) and function
Rate amplifier b (273) composition；Frequency of oscillation automatic identification and Injection Signal generating unit c (37) by analog-digital converter c (370),
Microprocessor c (371), digital analog converter c (372) and power amplifier c (373) composition；
--- analog form realizes that i.e. frequency of oscillation automatic identification and Injection Signal generating unit a (17) is by isolating amplifier circuit a
(174), bandwidth-limited circuit a (175), power amplifier a (176) are formed；Frequency of oscillation automatic identification and Injection Signal occur
Unit b (27) is made of isolating amplifier circuit b (274), bandwidth-limited circuit b (275), power amplifier b (276)；Oscillation frequency
Rate automatic identification and Injection Signal generating unit c (37) are by isolating amplifier circuit c (374), bandwidth-limited circuit c (375), power
Amplifier c (376) composition.
5. self-injection locking formula concatenated flux door sensor described in accordance with the claim 1, which is characterized in that sensor magnetic core is adopted
With the cobalt base amorphous band of the annealed processing of soft magnetic materials with obvious overdamp bistable state nonlinear characteristic.
6. self-injection locking formula concatenated flux door sensor according to claim 2, which is characterized in that triangular prism-shaped support
With coil support skeleton be selected from polyether-ether-ketone, nylon, polyetherimide, polyphenylene sulfide, polyphenyl imipramine, polytrifluorochloroethylene or
One of low deformation non-magnetic material of resin, is processed into through CNC lathe or 3D printing technique.
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| CN107422282B (en) * | 2017-06-15 | 2020-05-01 | 成都理工大学 | Digital spherical three-axis fluxgate magnetometer |
| CN108732517B (en) * | 2018-04-22 | 2020-07-14 | 成都理工大学 | Flux gate gradient measuring probe |
| CN108761358B (en) * | 2018-04-22 | 2021-07-23 | 成都理工大学 | Method for manufacturing magnetic probe of fluxgate sensor |
| CN108872888B (en) * | 2018-09-14 | 2020-07-24 | 中国科学院地质与地球物理研究所 | Fluxgate magnetic sensor of magnetic core skeleton texture |
| CN108983124B (en) * | 2018-09-25 | 2021-04-09 | 吉林大学 | Magnetic saturation state feedback fluxgate sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545958A (en) * | 2009-05-11 | 2009-09-30 | 吉林大学 | Bidirectional magnetic saturated time difference fluxgate sensor |
| CN101672901A (en) * | 2008-09-05 | 2010-03-17 | 哈尔滨工业大学 | Method for manufacturing micro fluxgate sensor |
| CN201859209U (en) * | 2010-11-22 | 2011-06-08 | 西北工业大学 | Single iron core fluxgate and double-shaft sensor for fluxgate |
| CN102147451A (en) * | 2011-01-14 | 2011-08-10 | 广东工业大学 | Fluxgate probe based on ferrous amorphous alloy magnetic core and method for making fluxgate probe |
| US9140765B1 (en) * | 2015-01-30 | 2015-09-22 | The United States Of America As Represented By The Secretary Of The Navy | Injection locked nonlinear dynamic system |
| CN105866713A (en) * | 2016-03-29 | 2016-08-17 | 吉林大学 | State feedback type self-excitation fluxgate sensor |
-
2017
- 2017-07-19 CN CN201710588369.2A patent/CN107450036B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672901A (en) * | 2008-09-05 | 2010-03-17 | 哈尔滨工业大学 | Method for manufacturing micro fluxgate sensor |
| CN101545958A (en) * | 2009-05-11 | 2009-09-30 | 吉林大学 | Bidirectional magnetic saturated time difference fluxgate sensor |
| CN201859209U (en) * | 2010-11-22 | 2011-06-08 | 西北工业大学 | Single iron core fluxgate and double-shaft sensor for fluxgate |
| CN102147451A (en) * | 2011-01-14 | 2011-08-10 | 广东工业大学 | Fluxgate probe based on ferrous amorphous alloy magnetic core and method for making fluxgate probe |
| US9140765B1 (en) * | 2015-01-30 | 2015-09-22 | The United States Of America As Represented By The Secretary Of The Navy | Injection locked nonlinear dynamic system |
| CN105866713A (en) * | 2016-03-29 | 2016-08-17 | 吉林大学 | State feedback type self-excitation fluxgate sensor |
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