CN202995013U - Three-dimensional intermediate frequency high-intensity magnetic field measuring probe - Google Patents
Three-dimensional intermediate frequency high-intensity magnetic field measuring probe Download PDFInfo
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- CN202995013U CN202995013U CN201220564819.7U CN201220564819U CN202995013U CN 202995013 U CN202995013 U CN 202995013U CN 201220564819 U CN201220564819 U CN 201220564819U CN 202995013 U CN202995013 U CN 202995013U
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Abstract
The utility model discloses a three-dimensional intermediate frequency high-intensity magnetic field measuring probe, and belongs to the field of intermediate frequency high-intensity alternating magnetic field equipment. The three-dimensional intermediate frequency high-intensity magnetic field measuring probe comprises three single-shaft magnetic field measuring sensors which enable magnetic field parameters to be converted into electrical signals, a sensor fixing plate which achieves connection of the three mutually-vertical single-shaft magnetic field measuring sensors and enables the electrical signals of the sensors to be transmitted to an aviation plug, a coaxial-cable which enables the electrical signals led by the aviation plug to be transmitted to a measuring instrument through a bayonet nut connector (BNC), an attenuator which is placed on the cable to achieve attenuation of the output electrical signals, and a probe three-dimensional attitude correction module which is composed of tri-axial accelerated velocity which is parallel to the direction of the three single-shaft magnetic field measuring sensors of the probe and a tri-axial magnetic field sensor. The three-dimensional intermediate frequency high-intensity magnetic field measuring probe can measure an intermediate frequency alternating magnetic field with a frequency domain of 1k-1MHz and an amplitude range of 1-1000 Gs, and can calculate amplitude and direction of a total magnetic field of a measuring point through a three-dimensional magnetic field measuring result, operation is simple, anti-interference capacity is strong, and measuring precision is high.
Description
Technical field
The utility model belongs to the strong alternative current field measurement sensor field of intermediate frequency, relates to medium-high frequency signals collecting and transmission technology, 3 d pose alignment technique, particularly a kind of three-dimensional intermediate-frequency high-magnetic field measuring sonde.
Background technology
The equipment such as industry eddy heating for heating equipment or magnetic induction thermotherapy are owing to carrying out the demands such as real-time measurement and control to the magnetic field of heating region, and needing the frequency measurement scope is the strong alternating field measuring instrument device of 10kHz～1MHz.Because the eddy effect of the strong alternating magnetic field of intermediate frequency causes common metering circuit because heat production was lost efficacy rapidly, simultaneously common magneto sensor is because the bandwidth deficiency causes and can't carry out Measurement accuracy to intermediate-frequency high-magnetic field.The way of mainly taking for the high frequency strong magnetic field measurement is inductive electromagnetic method.Inductive electromagnetic method is take a kind of Measurement Method for Magnetic Field of the law of electromagnetic induction as the basis.Because the magnetic field of measuring changes according to sinusoidal rule:
B=B
0sin(ωt)
B wherein
0Be the maximal value of magnetic induction density, ω is the angular frequency in magnetic field, so the induced electromotive force of each detecting coil:
The inductive coil that therefore can design different structure is surveyed the alternating magnetic field of different frequency and amplitude.
At present, the alternating field measuring instrument device mostly is Low-frequency Weak Field, high frequency electromagnetic radiation field or pulse electromagnetic field measuring equipment, and is mainly the one dimension magnetic-field-measuring device.
Patent 201010214820.2 and 201020243927.5 has been announced a kind of " intermediate-frequency high-magnetic field measuring device ", and it has mainly realized the measurement of one dimension alternating magnetic field, and the alternating magnetic field sensitive element is the self-control telefault.This device describes measurement scheme and the circuit of one dimension intermediate-frequency high-magnetic field in detail, measures when can not realize three direction alternating magnetic fields.
Patent 201010572779.6 has been announced a kind of " magnetic field measuring apparatus ", and it adopts Hall element as the magnetic-field-sensitive element, magnetic field to be measured, and because the frequency response range of Hall element is limited, can't realize the measurement of hundreds of KHz alternating magnetic fields.
Patent 201020196041.X has announced a kind of " inductive electromagnetic method impulse magnetic field measurement mechanism ", its magnetic-field-sensitive element adopts columniform line of induction ring type Magnetic Sensor, in order to realize the Measurement accuracy in magnetic field, it has designed a kind of support of special construction, the magnetic direction that guarantees to measure is perpendicular to coil plane, owing to adopting a sensor, equally only can measure one dimension magnetic field, and measurement range is limited.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of three-dimensional intermediate-frequency high-magnetic field measuring sonde, wide frequency range, measuring amplitude is wide, antijamming capability is strong, and is easy to use, but the accurate measurement of any point field frequency, amplitude and direction in the implementation space.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of three-dimensional intermediate-frequency high-magnetic field measuring sonde, comprise three orthogonal single shaft magnetic field probes 1 that are welded on sensor fixation plate 2, the output signal of each single shaft magnetic field probe 1 is drawn by aviation plug 4, aviation plug 4 connects surveying instrument by concentric cable connecting line 5, also comprises a probe 3 d pose correction module 6 of realizing probe positions and reference frame conversion.
Described single shaft magnetic field probe 1 is the plane ceoncentrically wound coil, is the alternating magnetic field sensitive element, and magnetic field parameter is converted to electric signal.
Described single shaft magnetic field probe 1 is made of multilayer circuit board copper layer etching plane ceoncentrically wound coil, and ceoncentrically wound coil is circle or polygon, is symmetrically distributed in the pros and cons of circuit board.
Described concentric cable connecting line 5 is made of three thin coaxial cables, and every thin coaxial cable one end connects aviation plug 4, and the other end connects BNC connector, is provided with the electrical signal amplitude attenuator on concentric cable connecting line 5.
Described electrical signal amplitude attenuator adopts passive RC circuit, and bandwidth is 10MHz.
Described probe 3 d pose correction module 6 is made of 3-axis acceleration sensor and triaxial magnetic field sensor, and the XYZ direction of acceleration transducer and magnetic field sensor is parallel respectively with measuring sonde XYZ direction.
Described 3-axis acceleration sensor adopts ADXL345, and three-D magnetic field sensor adopts HMC5883L.
Gather the signal of 3-axis acceleration sensor and three-dimensional magnetic field probe take AVR single chip computer AT MEGA8 as control core, and by the serial ports of single-chip microcomputer, result is transferred to host computer.
Compared with prior art, the utility model can be realized the measurement in three orthogonal directions magnetic fields, and measurement result comprises field frequency, intensity and synthetic total magnetic field direction.By the uniaxial magnetic field sensor, the magnetic field vertical with sensor plane is converted to ac voltage signal, this ac voltage signal frequency is consistent with field frequency, and peak value and magnetic field amplitude are linear.Voltage signal is drawn by the strong concentric cable of antijamming capability, by three-dimensional magnetic field probe Output rusults is carried out vector superposed amplitude, frequency and the directional information that can obtain the total magnetic field.
Description of drawings
Fig. 1 is three-dimensional magnetic field measuring sonde connection diagram
Fig. 2 is the concentric cable connecting line
Fig. 3 is probe 3 d pose correction module schematic diagram
Embodiment
Below in conjunction with drawings and Examples, the utility model is carried out more detailed explanation.
As shown in Figure 1, the utility model is three-dimensional intermediate frequency alternative current field measurement probe, comprises single shaft magnetic field probe 1, sensor fixation plate 2, probing shell 3, aviation plug 4, concentric cable connecting line 5, probe 3 d pose correction module 6.
As shown in Figure 1, single shaft magnetic field probe 1 has three and orthogonal, all is welded on sensor fixation plate 2.
As shown in Figure 2; the output signal of each single shaft magnetic field probe 1 is drawn by aviation plug 4, and aviation plug 4 connects surveying instrument by concentric cable connecting line 5, and aviation plug 4 is arranged on the probe afterbody by screw thread; it is outside that probing shell 3 is arranged on probe, is used for protecting probe.
As shown in Figure 3, the utility model also comprises a probe 3 d pose correction module 6 of realizing probe positions and reference frame conversion, probe 3 d pose correction module 6 is realized the signal transmission by signal wire 7, on probe 3 d pose correction module 6, with arc groove, arc groove and probe handle cylinder blanket link together.
Described single shaft magnetic field probe 1 is the plane ceoncentrically wound coil, is the alternating magnetic field sensitive element, such as the snail electromagnetic induction coil.Be made of multilayer circuit board copper layer etching plane ceoncentrically wound coil, ceoncentrically wound coil is circle or polygon, is symmetrically distributed in the pros and cons of circuit board.
Described sensor fixation plate 2 is realized the connection of three mutually perpendicular single shaft magnetic field probes 1, and the sensor electrical signal is transferred to aviation plug 4; The electric signal that described concentric cable connecting line 5 is drawn aviation plug 4 is transferred to surveying instrument by BNC connector, concentric cable connecting line 5 is made of three thin coaxial cables, every thin coaxial cable one end connects aviation plug 4, the other end connects BNC connector, be provided with the electrical signal amplitude attenuator on concentric cable connecting line 5, realize decay to output electrical signals by switch.Attenuator adopts passive RC circuit, and the peak signal attenuation amplitude is 10 times, signal bandwidth 1MHz.
Probe 3 d pose correction module is made of 3-axis acceleration sensor and triaxial magnetic field sensor, and the XYZ direction of acceleration transducer and magnetic field sensor is parallel respectively with measuring sonde XYZ direction, realized the conversion of probe positions and reference frame, in embodiment, 3-axis acceleration sensor adopts ADXL345, and three-D magnetic field sensor adopts HMC5883L.
The course of work of the present utility model is:
single shaft magnetic field probe 1 is converted to the same frequency ac voltage signal with field frequency and range parameter, then transfer to surveying instrument by aviation plug 4 and concentric cable connecting line 5, the electrical signal amplitude attenuator is realized the decay to output electrical signals, the signal that the signal that surveying instrument obtains and probe 3 d pose correction module obtain is all transferred to single-chip microcomputer and is processed, obtain the transformation results of probe positions and reference frame, again three-dimensional magnetic field probe Output rusults is carried out the vector superposed amplitude that can obtain the total magnetic field, frequency and directional information, and with these data upload to host computer.
Claims (8)
1. three-dimensional intermediate-frequency high-magnetic field measuring sonde, it is characterized in that, comprise three the orthogonal single shaft magnetic field probes (1) that are welded on sensor fixation plate (2), the output signal of each single shaft magnetic field probe (1) is drawn by aviation plug (4), aviation plug (4) connects surveying instrument by concentric cable connecting line (5), also comprises a probe 3 d pose correction module (6) of realizing probe positions and reference frame conversion.
2. three-dimensional intermediate-frequency high-magnetic field measuring sonde according to claim 1, is characterized in that, described single shaft magnetic field probe (1) is the plane ceoncentrically wound coil, is the alternating magnetic field sensitive element, and magnetic field parameter is converted to electric signal.
3. three-dimensional intermediate-frequency high-magnetic field measuring sonde according to claim 2, it is characterized in that, described single shaft magnetic field probe (1) is made of multilayer circuit board copper layer etching plane ceoncentrically wound coil, and ceoncentrically wound coil is circle or polygon, is symmetrically distributed in the pros and cons of circuit board.
4. three-dimensional intermediate-frequency high-magnetic field measuring sonde according to claim 1, it is characterized in that, described concentric cable connecting line (5) is made of three thin coaxial cables, every thin coaxial cable one end connects aviation plug (4), the other end connects BNC connector, and the concentric cable connecting line is provided with the electrical signal amplitude attenuator on (5).
5. three-dimensional intermediate-frequency high-magnetic field measuring sonde according to claim 4, is characterized in that, described electrical signal amplitude attenuator adopts passive RC circuit, and bandwidth is 10MHz.
6. three-dimensional intermediate-frequency high-magnetic field measuring sonde according to claim 1, it is characterized in that, described probe 3 d pose correction module (6) is made of 3-axis acceleration sensor and triaxial magnetic field sensor, and the XYZ direction of acceleration transducer and magnetic field sensor is parallel respectively with measuring sonde XYZ direction.
7. three-dimensional intermediate-frequency high-magnetic field measuring sonde according to claim 6, is characterized in that, described 3-axis acceleration sensor adopts ADXL345, and three-D magnetic field sensor adopts HMC5883L.
8. according to claim 6 or 7 described three-dimensional intermediate-frequency high-magnetic field measuring sondes, it is characterized in that, gather the signal of 3-axis acceleration sensor and three-dimensional magnetic field probe take AVR single chip computer AT MEGA8 as control core, and by the serial ports of single-chip microcomputer, result is transferred to host computer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220564819.7U CN202995013U (en) | 2012-10-30 | 2012-10-30 | Three-dimensional intermediate frequency high-intensity magnetic field measuring probe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220564819.7U CN202995013U (en) | 2012-10-30 | 2012-10-30 | Three-dimensional intermediate frequency high-intensity magnetic field measuring probe |
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| CN202995013U true CN202995013U (en) | 2013-06-12 |
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| CN201220564819.7U Expired - Fee Related CN202995013U (en) | 2012-10-30 | 2012-10-30 | Three-dimensional intermediate frequency high-intensity magnetic field measuring probe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777152A (en) * | 2014-02-19 | 2014-05-07 | 清华大学 | Alternating magnetic field three-dimensional distribution measuring device |
| CN105242222A (en) * | 2015-09-11 | 2016-01-13 | 合肥联宝信息技术有限公司 | Method for measuring magnetic field radiation and magnetic field probe |
| CN107831456A (en) * | 2017-11-29 | 2018-03-23 | 武汉智能装备工业技术研究院有限公司 | A kind of wireless three-axle magnetic field measurement instrument based on Hall sensor |
| CN107918060A (en) * | 2016-10-09 | 2018-04-17 | 武汉碧海云天科技股份有限公司 | Electromagnetic field on-line monitoring system and its method of work |
| CN109152565A (en) * | 2016-05-10 | 2019-01-04 | 皇家飞利浦有限公司 | The 3D tracking of intervention instrument in the intervention of 2D ultrasonic guidance |
| CN114675226A (en) * | 2022-03-28 | 2022-06-28 | 北京微纳星空科技有限公司 | Method, system, chip and device for measuring mounting matrix of three-axis magnetometer |
-
2012
- 2012-10-30 CN CN201220564819.7U patent/CN202995013U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777152A (en) * | 2014-02-19 | 2014-05-07 | 清华大学 | Alternating magnetic field three-dimensional distribution measuring device |
| CN105242222A (en) * | 2015-09-11 | 2016-01-13 | 合肥联宝信息技术有限公司 | Method for measuring magnetic field radiation and magnetic field probe |
| CN109152565A (en) * | 2016-05-10 | 2019-01-04 | 皇家飞利浦有限公司 | The 3D tracking of intervention instrument in the intervention of 2D ultrasonic guidance |
| CN109152565B (en) * | 2016-05-10 | 2022-11-04 | 皇家飞利浦有限公司 | 3D tracking of interventional instruments in 2D ultrasound guided interventions |
| CN107918060A (en) * | 2016-10-09 | 2018-04-17 | 武汉碧海云天科技股份有限公司 | Electromagnetic field on-line monitoring system and its method of work |
| CN107918060B (en) * | 2016-10-09 | 2024-03-26 | 武汉碧海云天科技股份有限公司 | Electromagnetic field on-line monitoring system and working method thereof |
| CN107831456A (en) * | 2017-11-29 | 2018-03-23 | 武汉智能装备工业技术研究院有限公司 | A kind of wireless three-axle magnetic field measurement instrument based on Hall sensor |
| CN107831456B (en) * | 2017-11-29 | 2024-05-03 | 武汉智能装备工业技术研究院有限公司 | Wireless triaxial magnetic field measuring instrument based on Hall sensor |
| CN114675226A (en) * | 2022-03-28 | 2022-06-28 | 北京微纳星空科技有限公司 | Method, system, chip and device for measuring mounting matrix of three-axis magnetometer |
| CN114675226B (en) * | 2022-03-28 | 2023-01-24 | 北京微纳星空科技有限公司 | Method, system, chip and device for measuring mounting matrix of three-axis magnetometer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20211030 |
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| CF01 | Termination of patent right due to non-payment of annual fee |