CN204269800U - A kind of aeromagnetic survey device based on low-temperature superconducting SQUID - Google Patents
A kind of aeromagnetic survey device based on low-temperature superconducting SQUID Download PDFInfo
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- CN204269800U CN204269800U CN201420824962.4U CN201420824962U CN204269800U CN 204269800 U CN204269800 U CN 204269800U CN 201420824962 U CN201420824962 U CN 201420824962U CN 204269800 U CN204269800 U CN 204269800U
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Abstract
The utility model provides a kind of aeromagnetic survey device based on low-temperature superconducting SQUID, comprise data acquisition unit, power supply unit, to fix bucket without magnetic backup system support, faraday cup, sensing circuit and attitude measurement module, low-temperature superconducting SQUID sensor unit, Non-magnetic dewar, vibration-absorbing material, without magnetic device bottom bracing plate and shock-absorbing member; Describedly fix bucket without magnetic backup system support and described Non-magnetic dewar and be all fixed on described without on magnetic device bottom bracing plate; Described low-temperature superconducting SQUID sensor unit is placed in described Non-magnetic dewar and fixes in bucket, and described low-temperature superconducting SQUID sensor unit and described Non-magnetic dewar are fixed between bucket and be filled with described vibration-absorbing material; The coated whole measurement mechanism of described faraday cup.Aeromagnetic survey device based on low-temperature superconducting SQUID of the present utility model, can promote the antijamming capability of low-temperature superconducting SQUID system to test outfield complex electromagnetic environment, the high and low frequency mechanical vibration introduced in abatement aeromagnetic survey process.
Description
Technical field
The utility model relates to a kind of magnetic measuring device, particularly relates to a kind of aeromagnetic survey device based on low-temperature superconducting SQUID (SuperconductingQuantum Interference Device, superconducting quantum interference device).
Background technology
Airborne magnetometry (aeromagnetic survey) be in airborne geophysical prospecting method service time the earliest, the most ripe and the most maximum magnetic survey method, aeromagnetics instrument system is arranged in aircraft or other aircraft by the total intensity T of observation terrestrial magnetic field or the abnormal △ T in total magnetic field or its gradient by it, find magnetic or the ore body relevant with magnetic, to understand tectonic structure, carry out magnetic charting, to solve city and the problem such as engineering stability and archaeology.Different according to service field, be divided into areal structure charting, hydrocarbon structure is reconnoitred, solid mineral exploration and other application types.
SQUID is a kind of extremely delicate measuring faint magnetic signal, it is functionally a kind of magnetic flux transducer, not only can be used for measuring the change of magnetic flux, other physical quantitys that can be converted to magnetic flux can also be measured, as voltage, electric current, resistance, inductance, magnetic induction density, magnetic field gradient, magnetic susceptibility etc.The ultimate principle of SQUID is based upon on the basis of flux quautization and Josephson effect.According to the difference of bias current, be divided into direct current and radio frequency two class.SQUID is as detector, the Weak magentic-field of 10-11 Gauss can be measured, only be equivalent to 1/10000000000th of terrestrial magnetic field, several order of magnitude is improved than conventional magnetometer sensitivity, being the underlying instrument equipment carrying out the research of the material magnetic property such as superconduction, nanometer, magnetic and semiconductor, is particularly required to the micro-example such as film and nanometer.Utilize SQUID detector to detect DC magnetic susceptibility signal, sensitivity can reach 10-8emu; Range of temperature is 1.9K ~ 400K; Change of magnetic field strength scope is 0 ~ 70000 Gauss.
Along with the maturation of low-temperature superconducting SQUID Magnetic Measurement Technology and improving constantly of sensitivity, the aviation vector magnetic based on high sensitivity superconductive magnetometer is measured and full tensor gradiometry becomes the study hotspot of aeromagnetic survey.
But existing aviation superconductive magnetometer has following deficiency:
(1) existing aviation superconductive magnetometer is directly measured terrestrial magnetic field, belongs to low-temperature superconducting SQUID and is in and works without under magnetic shielding environment.Due to outfield complex electromagnetic environment, very easily make SQUID system enter out-of-lock condition, allow duty be affected, cause test performance to reduce, time serious, even make device normally work.
(2) owing to being based on airborne platform, as the measurement of magnetic field of unmanned aerial vehicle, dirigible, hot air balloon etc., the machinery that test period can introduce high and low frequency rocks, this state can introduce motion artifacts when low-temperature superconducting SQUID magnetic survey, magnetic-field measurement precision can be affected, also cause time serious device cannot normally be worked.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of aeromagnetic survey device based on low-temperature superconducting SQUID, the antijamming capability of low-temperature superconducting SQUID system to test outfield complex electromagnetic environment can be promoted, the high and low frequency mechanical vibration introduced in abatement aeromagnetic survey process.
For achieving the above object and other relevant objects, the utility model provides a kind of aeromagnetic survey device based on low-temperature superconducting SQUID, comprise data acquisition unit, power supply unit, to fix bucket without magnetic backup system support, faraday cup, sensing circuit and attitude measurement module, low-temperature superconducting SQUID sensor unit, Non-magnetic dewar, vibration-absorbing material, without magnetic device bottom bracing plate and shock-absorbing member; Describedly fix bucket without magnetic backup system support and described Non-magnetic dewar and be all fixed on described without on magnetic device bottom bracing plate; Described low-temperature superconducting SQUID sensor unit is placed in described Non-magnetic dewar and fixes in bucket, and described low-temperature superconducting SQUID sensor unit and described Non-magnetic dewar are fixed between bucket and be filled with described vibration-absorbing material; Described data acquisition unit and described power supply unit are placed in described without on magnetic backup system support; Described shock-absorbing member is arranged on the described bottom without magnetic device bottom bracing plate; Described low-temperature superconducting SQUID sensor unit is used for the signal of the changes of magnetic field of measurement space; Described sensing circuit is connected with described low-temperature superconducting SQUID sensor unit with attitude measurement module, comprise sensing circuit and attitude measurement module, described sensing circuit is used for exporting after the described signal sent by low-temperature superconducting SQUID sensor unit amplifies, and described attitude measurement module is for obtaining the real-time attitude information of low-temperature superconducting SQUID sensor unit when measuring; Described data acquisition unit is connected with attitude measurement module with described sensing circuit, for receiving and store the signal that sensing circuit and attitude measurement module send; The coated whole measurement mechanism of described faraday cup.
According to the above-mentioned aeromagnetic survey device based on low-temperature superconducting SQUID, wherein: described low-temperature superconducting SQUID sensor unit comprises SQUID device group, liquid helium, Dewar and Multilayer single conductive metal film.
According to the above-mentioned aeromagnetic survey device based on low-temperature superconducting SQUID, wherein: described data acquisition unit comprises A/D capture card and microcontroller.
According to the above-mentioned aeromagnetic survey device based on low-temperature superconducting SQUID, wherein: described faraday cup is used for the isolated external electromagnetic wave of cage to the electromagnetic interference (EMI) of whole measurement mechanism.
According to the above-mentioned aeromagnetic survey device based on low-temperature superconducting SQUID, wherein: described to fix bucket without magnetic backup system support and described Non-magnetic dewar all described without on magnetic device bottom bracing plate by being fixed on without magnetic set bolt.
According to the above-mentioned aeromagnetic survey device based on low-temperature superconducting SQUID, wherein: described power supply unit and described data acquisition unit are all described without on magnetic backup system support by being fixed on without magnetic set bolt.
According to the above-mentioned aeromagnetic survey device based on low-temperature superconducting SQUID, wherein: described vibration-absorbing material adopts low frequency absorbing pad.
According to the above-mentioned aeromagnetic survey device based on low-temperature superconducting SQUID, wherein: described shock-absorbing member is bell type shock-absorbing member.
As mentioned above, the aeromagnetic survey device based on low-temperature superconducting SQUID of the present utility model, has following beneficial effect:
(1) all supporting mechanism and fixed part all adopt rigidity non-magnetic material, decrease the introducing of bad factor simultaneously, the accuracy of test result and authenticity are guaranteed in increase physical strength;
(2) low-temperature superconducting sensor unit (Dewar) outer is adopted to carry out monolayer conductive film multilayer coating structure and the process of total system unique faraday's basket structure outward, well solve the near field electric jamming of air transport platform introducing and the multi-frequency band radio-frequency interference of complicated outfield introducing, greatly improve test macro to electromagnetic interference shield performance;
(3) eliminate the mechanical vibration of airborne platform medium and low frequency to the impact of test cell, processing mode fixes between bucket at low-temperature superconducting sensor unit (Dewar) and Non-magnetic dewar to adopt vibration-absorbing material to fill, to eliminate the mechanical vibration of low-frequency range;
(4) in order to tackle the high-frequency mechanical vibration that airborne platform is introduced, whole bottom of device have employed flexible and the moderate bell type parts with certain absorbing frequency of rigidity, makes it on airborne platform, have the effect eliminating high-frequency mechanical vibration well.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation of the aeromagnetic survey device based on low-temperature superconducting SQUID of the present utility model.
Element numbers explanation
1 data acquisition unit
2 power supply units
3 without magnetic backup system support
4 faraday cups
5 sensing circuits and attitude measurement module
6 low-temperature superconducting sensor units
7 Non-magnetic dewars fix bucket
8 vibration-absorbing material
9 without magnetic device bottom bracing plate
10 without magnetic set bolt
11 shock-absorbing member
Embodiment
Below by way of specific instantiation, embodiment of the present utility model is described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present utility model and effect easily.The utility model can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present utility model.
It should be noted that, the diagram provided in the present embodiment only illustrates basic conception of the present utility model in a schematic way, then only the assembly relevant with the utility model is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
With reference to Fig. 1, the aeromagnetic survey device based on low-temperature superconducting SQUID of the present utility model comprises data acquisition unit 1, power supply unit 2, to fix bucket 7 without magnetic backup system support 3, faraday cup 4, sensing circuit and attitude measurement module 5, low-temperature superconducting SQUID sensor unit 6, Non-magnetic dewar, vibration-absorbing material 8 and without magnetic device bottom bracing plate 9.
Wherein, fixing bucket 7 without magnetic backup system support 3 and Non-magnetic dewar is all fixed on without on magnetic device bottom bracing plate 9; Low-temperature superconducting SQUID sensor unit 6 is placed in Non-magnetic dewar and fixes in bucket 7, and low-temperature superconducting SQUID sensor unit 6 and Non-magnetic dewar are fixed between bucket 7 and be filled with low frequency vibration-absorbing material 8; Data acquisition unit 1 and power supply unit 2 are placed in without on magnetic backup system support 3; Data acquisition unit 1 is connected with attitude measurement module 5 with sensing circuit; Sensing circuit and attitude measurement module 5 are placed on low-temperature superconducting SQUID sensor unit 6, and are attached thereto; The coated whole measurement mechanism of faraday cup 4.
Low-temperature superconducting SQUID sensor unit 6 is for the signal of the changes of magnetic field of measurement space.Particularly, low-temperature superconducting SQUID sensor unit 6 comprises SQUID device group, liquid helium, Dewar and Multilayer single conductive metal film, thus drastically increases the shielding properties of measurement mechanism to electromagnetic interference (EMI).
Sensing circuit and attitude measurement module 5 comprise sensing circuit and attitude measurement module.Wherein, export after the signal that sensing circuit is used for low-temperature superconducting SQUID sensor unit to send amplifies; Attitude measurement module is for obtaining the real-time attitude information of low-temperature superconducting SQUID sensor unit when measuring.
Particularly, the faint magnetic signal that low-temperature superconducting SQUID sensor unit obtains is converted to voltage/current signals amplification and carries out loop-locking in appropriate point, so that data acquisition and work by sensing circuit.Attitude measurement module obtains the attitude information of low-temperature superconducting SQUID sensor unit, is convenient to late time data inverting uniform spaces coordinate system.
The signal that data acquisition unit 1 sends for obtaining and store sensing circuit and attitude measurement module 5.Particularly, data acquisition unit 1 comprises high-performance A/D capture card and microcontroller.
Faraday cup 4 for the external electromagnetic wave of isolated cage to the electromagnetic interference (EMI) of whole measurement mechanism.
Power supply unit 2 is for powering for whole measurement mechanism.Preferably, power supply unit 2 is fixed on without on magnetic backup system support 3.
Because data acquisition unit 1 and power supply unit 2 may produce certain impact to space magnetic measurement results, therefore data acquisition unit 1 and power supply unit 2 are placed in without in magnetic backup system support 3, make the impact solidification that magnetic measurement results is produced, thus ensure accuracy and the validity of space magnetic measurement results.Wherein, be sandwich construction without magnetic backup system support.
When reality uses the aeromagnetic survey device based on low-temperature superconducting SQUID of the present utility model to carry out aeromagnetic survey, this measurement mechanism is placed on airborne platform.The signal of the changes of magnetic field of low-temperature superconducting SQUID sensor unit measurement space, and be sent to sensing circuit and attitude measurement module; Sensing circuit and attitude measurement module convert the magnetic signal that low-temperature superconducting SQUID sensor unit sends to voltage/current signals and amplify, and obtain the real-time attitude information of low-temperature superconducting SQUID sensor unit when measuring simultaneously; Data acquisition unit obtains and stores the signal that sensing circuit and attitude measurement module send, thus can know space magnetic signal everywhere, achieves aeromagnetic survey.
Preferably, bucket 7 is fixed all by being fixed on without magnetic set bolt 10 without on magnetic device bottom bracing plate 9 without magnetic backup system support 3 and Non-magnetic dewar.Power supply unit 2 and data acquisition unit 1 are all by being fixed on without magnetic set bolt 10 without on magnetic backup system support 9.
Preferably, vibration-absorbing material 8 adopts low frequency absorbing pad.
Preferably, faraday cup 4 adopts many orders metal material faraday cup.
In a preferred embodiment of the present utility model, without 9 being provided with shock-absorbing member 11, to cut down the high-frequency mechanical vibration introduced in aeromagnetic survey process bottom magnetic device bottom bracing plate.Preferably, shock-absorbing member 11 is bell type, adopts quality of rubber materials.
In sum, the aeromagnetic survey device based on low-temperature superconducting SQUID of the present utility model promotes the antijamming capability of low-temperature superconducting SQUID system to test outfield complex environment, the high and low frequency mechanical vibration introduced in abatement aeromagnetic survey process; Stabilize the performance of system, ensure that the normal work of system.So the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (8)
1., based on an aeromagnetic survey device of low-temperature superconducting SQUID, it is characterized in that: comprise data acquisition unit, power supply unit, to fix bucket without magnetic backup system support, faraday cup, sensing circuit and attitude measurement module, low-temperature superconducting SQUID sensor unit, Non-magnetic dewar, vibration-absorbing material, without magnetic device bottom bracing plate and shock-absorbing member;
Describedly fix bucket without magnetic backup system support and described Non-magnetic dewar and be all fixed on described without on magnetic device bottom bracing plate; Described low-temperature superconducting SQUID sensor unit is placed in described Non-magnetic dewar and fixes in bucket, and described low-temperature superconducting SQUID sensor unit and described Non-magnetic dewar are fixed between bucket and be filled with described vibration-absorbing material; Described data acquisition unit and described power supply unit are placed in described without on magnetic backup system support; Described shock-absorbing member is arranged on the described bottom without magnetic device bottom bracing plate;
Described low-temperature superconducting SQUID sensor unit is used for the signal of the changes of magnetic field of measurement space;
Described sensing circuit is connected with described low-temperature superconducting SQUID sensor unit with attitude measurement module, comprise sensing circuit and attitude measurement module, export after the signal that described sensing circuit is used for described low-temperature superconducting SQUID sensor unit to send amplifies, described attitude measurement module is for obtaining the real-time attitude information of low-temperature superconducting SQUID sensor unit when measuring;
Described data acquisition unit is connected with attitude measurement module with described sensing circuit, for receiving and store the signal that sensing circuit and attitude measurement module send;
The coated whole measurement mechanism of described faraday cup.
2. the aeromagnetic survey device based on low-temperature superconducting SQUID according to claim 1, is characterized in that: described low-temperature superconducting SQUID sensor unit comprises SQUID device group, liquid helium, Dewar and Multilayer single conductive metal film.
3. the aeromagnetic survey device based on low-temperature superconducting SQUID according to claim 1, is characterized in that: described data acquisition unit comprises A/D capture card and microcontroller.
4. the aeromagnetic survey device based on low-temperature superconducting SQUID according to claim 1, is characterized in that: described faraday cup is used for the isolated external electromagnetic wave of cage to the electromagnetic interference (EMI) of whole measurement mechanism.
5. the aeromagnetic survey device based on low-temperature superconducting SQUID according to claim 1, is characterized in that: described to fix bucket without magnetic backup system support and described Non-magnetic dewar all described without on magnetic device bottom bracing plate by being fixed on without magnetic set bolt.
6. the aeromagnetic survey device based on low-temperature superconducting SQUID according to claim 1, is characterized in that: described power supply unit and described data acquisition unit are all described without on magnetic backup system support by being fixed on without magnetic set bolt.
7. the aeromagnetic survey device based on low-temperature superconducting SQUID according to claim 1, is characterized in that: described vibration-absorbing material adopts low frequency absorbing pad.
8. the aeromagnetic survey device based on low-temperature superconducting SQUID according to claim 1, is characterized in that: described shock-absorbing member is bell type shock-absorbing member.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785288A (en) * | 2014-12-19 | 2016-07-20 | 中国科学院上海微***与信息技术研究所 | Aeromagnetic survey device based on low-temperature superconductive SQUID |
| CN107449941A (en) * | 2016-04-08 | 2017-12-08 | Abb瑞士有限公司 | Test Block With Faraday Cage |
| CN108514413A (en) * | 2018-04-04 | 2018-09-11 | 漫迪医疗仪器（上海）有限公司 | Dewar biology Magnetic Detection System and its design method/system, readable storage medium storing program for executing |
| CN109061767A (en) * | 2018-06-28 | 2018-12-21 | 上海卫星工程研究所 | Deep space exploration high sensitivity testing system and test method |
| CN109521477A (en) * | 2018-12-04 | 2019-03-26 | 中国人民解放军国防科技大学 | SQUID-based shore-based underwater magnetic anomaly detection device and detection method thereof |
| CN110632423A (en) * | 2019-09-26 | 2019-12-31 | 中国科学院上海微***与信息技术研究所 | Low-temperature physical property testing system and device |
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2014
- 2014-12-19 CN CN201420824962.4U patent/CN204269800U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105785288A (en) * | 2014-12-19 | 2016-07-20 | 中国科学院上海微***与信息技术研究所 | Aeromagnetic survey device based on low-temperature superconductive SQUID |
| CN107449941A (en) * | 2016-04-08 | 2017-12-08 | Abb瑞士有限公司 | Test Block With Faraday Cage |
| CN108514413A (en) * | 2018-04-04 | 2018-09-11 | 漫迪医疗仪器（上海）有限公司 | Dewar biology Magnetic Detection System and its design method/system, readable storage medium storing program for executing |
| CN108514413B (en) * | 2018-04-04 | 2023-09-22 | 漫迪医疗仪器（上海）有限公司 | Dewar biological magnetic detection system, design method/system thereof and readable storage medium |
| CN109061767A (en) * | 2018-06-28 | 2018-12-21 | 上海卫星工程研究所 | Deep space exploration high sensitivity testing system and test method |
| CN109521477A (en) * | 2018-12-04 | 2019-03-26 | 中国人民解放军国防科技大学 | SQUID-based shore-based underwater magnetic anomaly detection device and detection method thereof |
| CN110632423A (en) * | 2019-09-26 | 2019-12-31 | 中国科学院上海微***与信息技术研究所 | Low-temperature physical property testing system and device |
| CN110632423B (en) * | 2019-09-26 | 2021-05-11 | 中国科学院上海微***与信息技术研究所 | Low-temperature physical property testing system and device |
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