CN109521477A - SQUID-based shore-based underwater magnetic anomaly detection device and detection method thereof - Google Patents
SQUID-based shore-based underwater magnetic anomaly detection device and detection method thereof Download PDFInfo
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- CN109521477A CN109521477A CN201811469098.XA CN201811469098A CN109521477A CN 109521477 A CN109521477 A CN 109521477A CN 201811469098 A CN201811469098 A CN 201811469098A CN 109521477 A CN109521477 A CN 109521477A
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- G—PHYSICS
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention discloses a SQUID-based shore-based underwater magnetic anomaly detection device and a detection method thereof, wherein the SQUID-based shore-based underwater magnetic anomaly detection device comprises a data acquisition module, a non-magnetic Dewar container and an upper computer, the data acquisition module is arranged in the non-magnetic Dewar container which can enable the SQUID to keep a superconducting state, the non-magnetic Dewar container is arranged under the water surface, the upper computer is electrically connected with the data acquisition module, magnetic signals are acquired through the data acquisition module and converted into electric signals which are transmitted to the upper computer for processing, and then a detection report is generated. The invention adopts an underwater detection-onshore receiving mode, is suitable for the detection of targets on the offshore water surface and underwater on the continent or island, solves the problem of low detection resolution of the traditional technology and instruments, realizes passive detection, has high response speed and high precision, greatly improves the signal-to-noise ratio and the detection range, and provides a good foundation for the subsequent target positioning.
Description
Technical field
The present invention relates to magnetic resonance prospecting instrument technical field more particularly to a kind of underwater magnetic of bank base based on SQUID
Abnormality detector and its detection method.
Background technique
The earth is a natural magnet, electronic equipment (such as mobile phone) and the vehicles (such as automobile, steamer and aircraft)
Deng the influence that will receive the earth containing ferromagnetic object.Corresponding, these, which contain ferromagnetic object, also will affect it
The distribution in periphery earth magnetic field, i.e. generation magnetic anomaly (Magnetic Anomaly) phenomenon.Magnetic anomaly detection technique is based on ferromagnetism
The magnetic anomaly phenomenon that target (Ferromagnetic Target) generates the equally distributed disturbance of the earth magnetic field magnetic line of force into
Row target detection, be a kind of passive and non-contacting detection method.Moreover, cannot be with any with sound, light and electromagnetic wave etc.
For angle from being transferred in water in air without changing its direction of propagation and energy difference, the magnetic line of force in magnetic field enters air from water
But hardly change its direction of propagation in the process, and its circulation way is almost consistent, so as to pass through the detection water surface
On detection, positioning and tracking etc. of the magnetic anomaly phenomenon to realize the ferromagnetism target such as submarine in water, submarine mine.
Therefore, in this case can Ying design a kind of underwater magnetic anomaly detection device of bank base Yong the different detection technique of Ci
To substitute the detection device of sonar and Radar Technology.
Summary of the invention
The object of the present invention is to provide a kind of fast response time, precision is high and can carry out the underwater magnetic anomaly of bank base of passive detection
Normal detection device and its detection method, the detection suitable for continent or the island coastal waters water surface and submarine target.
In order to solve the above technical problems, the present invention provides a kind of underwater magnetic anomaly detection device of the bank base based on SQUID, packet
It includes:
Data acquisition module, including SQUID and reading circuit, the SQUID are used to acquire the water surface and underwater magnetic signal,
The reading circuit is used to convert the SQUID magnetic signal acquired to electric signal, the SQUID and reading circuit electricity
Connection；
Non-magnetic dewar container, the Non-magnetic dewar container are set to underwater, built with the SQUID can be made to keep superconduction
The liquid helium of state, the SQUID are located in the Non-magnetic dewar container；
Host computer is located in the bank base, described upper for receiving and handling the electric signal of the reading circuit transmission
Machine is electrically connected by the reading circuit with the SQUID.
Preferably, the Non-magnetic dewar container is set on undersea continental shelf.
Preferably, the reading circuit is set in the Non-magnetic dewar container.
Preferably, the reading circuit includes for providing the DC bias supplies and use of offset signal to the SQUID
In the amplifier that the magnetic signal for acquiring the SQUID is tentatively amplified, the DC bias supplies are electrically connected with the SQUID
It connects, the amplifier and the upper mechatronics.
Preferably, signal conditioning circuit, the signal conditioning circuit are equipped between the host computer and the reading circuit
The electric signal for being transferred to the host computer for improving the reading circuit.
Preferably, the data acquisition module further includes feedback resistance and bucking coil, and the bucking coil passes through described
Feedback resistance is electrically connected with the reading circuit, and the bucking coil passes through described in the compensation data that the feedback resistance is fed back
SQUID magnetic flux.
Preferably, the SQUID is electrically connected with the host computer using transmission cable.
A kind of detection method of the underwater magnetic anomaly of bank base based on SQUID, the detection method at least include the following steps:
Step 1: setting magnetic anomaly threshold value and detection number of repetition are simultaneously input in the host computer；
Step 2: the SQUID acquisition water surface and underwater magnetic signal, and by the magnetic signals collected to described
Reading circuit；
Step 3: the reading circuit receives the magnetic signal and is tentatively amplified and be converted into electric signal transmission on described
Position machine；
Step 4: the host computer receives, observes and handles the electric signal of the reading circuit transmission, and generates detection report
It accuses.
As described above, a kind of detection device of the underwater magnetic anomaly of bank base based on SQUID of the invention, comprising: data acquisition
Module, including SQUID and reading circuit, the SQUID are used for for acquiring magnetic signal, the reading circuit by the SQUID
The magnetic signal of acquisition is converted into electric signal, and the SQUID is electrically connected with the reading circuit；Non-magnetic dewar container, the no magnetic
Dewar type container is set to underwater, and built with the liquid helium that the SQUID can be made to keep superconducting state, the SQUID is located at the nothing
In magnetic Dewar type container；Host computer is located in the bank base, for receiving and handling the electric signal of the reading circuit transmission, institute
Host computer is stated to be electrically connected by the reading circuit with the SQUID.The present invention uses " undersea detection-receives on the bank " mode,
Suitable for continent or the island coastal waters water surface and underwater target acquisition, solve traditional technology and the low difficulty of instrument detection resolution
Topic realizes passive detection, and fast response time, precision is high, greatly improves signal-to-noise ratio and investigative range, and the target after being is fixed
Position provides good basis, and detection method has the characteristics that easy to operate and rapidly and efficiently.
Detailed description of the invention
Fig. 1 is that the present invention is based on the underwater magnetic anomaly detection apparatus structure schematic diagrams of the bank base of SQUID；
Fig. 2 is that the present invention is based on data acquisition module structural schematic diagrams in the underwater magnetic anomaly detection device of the bank base of SQUID；
Fig. 3 is that the present invention is based on the detection method flow charts of the underwater magnetic anomaly of the bank base of SQUID；
Fig. 4 is the detection spectrogram of the bank base underwater magnetic anomaly detection device based on SQUID when wing is not damaged in the present invention；
Fig. 5 is the detection spectrogram of the bank base underwater magnetic anomaly detection device based on SQUID when wing is had damage in the present invention.
In figure: 1. data acquisition modules；11.SQUID；12. reading circuit；13. feedback resistance；14. bucking coil； 2.
Non-magnetic dewar container；121. DC bias supplies；122. amplifier；3. host computer；4. transmission cable；5. signal conditioning circuit；
6. bank base.
Specific embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, with reference to the accompanying drawing to the present invention
It is described in further detail.
As shown in Figure 1, a kind of underwater magnetic anomaly detection device of bank base based on SQUID, comprising:
Data acquisition module 1, including SQUID11 and reading circuit 12, the SQUID11 are used to acquire the water surface and underwater
Magnetic signal, the reading circuit 12 are used to convert electric signal for the SQUID11 magnetic signal acquired, the SQUID11 with
The reading circuit 12 is electrically connected；
Non-magnetic dewar container 2, the Non-magnetic dewar container 2 is set to seawater underwater, built with can make the SQUID11
The liquid helium of superconducting state is kept, the SQUID11 is located in the Non-magnetic dewar container 2；
Host computer 3 is located in the bank base 6, the electric signal transmitted for receiving and handling the reading circuit 12, described
Host computer 3 is electrically connected by the reading circuit 12 with the SQUID11.
In the present embodiment, the Non-magnetic dewar container 2 is set to seawater underwater, in the Non-magnetic dewar container 2
The SQUID11 is used for the magnetic for acquiring the SQUID11 for acquiring the water surface and underwater magnetic signal, the reading circuit 12
Signal, which is converted into electric signal and is transferred to the host computer 3, is observed processing, and present invention employs " undersea detection-connects on the bank
Receipts " mode solves traditional technology and instrument detection is differentiated suitable for continent or the island coastal waters water surface and underwater target acquisition
The low problem of rate realizes passive detection, and fast response time, precision is high, signal-to-noise ratio and investigative range is greatly improved, after being
Target positioning provide good basis.
As shown in Figure 1, the Non-magnetic dewar container 2 is set on undersea continental shelf.In the present embodiment, no magnetic Du
Watt container 2 is set on undersea continental shelf, installs the Non-magnetic dewar container 2 reliable and stable, on the other hand
Also the daily maintenance of convenient the Non-magnetic dewar container 2 and the SQUID11 being placed in the Non-magnetic dewar container 2.
As shown in Figure 1, the reading circuit 12 is set in the Non-magnetic dewar container 2.In the present embodiment, the reading electricity
Road 12 and the SQUID11 are set in the Non-magnetic dewar container 2, convenient for the reading circuit 12 and SQUID11 it
Between connection.
As shown in Figure 1, the reading circuit 12 includes for providing the direct current biasing electricity of offset signal to the SQUID11
The amplifier 122 that source 121 and magnetic signal for acquiring the SQUID11 are tentatively amplified, the DC bias supplies
121 are electrically connected with the SQUID11, and the amplifier 122 is electrically connected with the host computer 3.In the present embodiment, by described straight
It flows bias supply 121 and the preliminary amplification of offset signal and the amplifier 122 is provided, can effectively ensure that the SQUID11
The magnetic signal of acquisition carries out distortionless amplification and transmission by the reading circuit 12.
As shown in Figure 1, being equipped with signal conditioning circuit 5, the signal tune between the host computer 3 and the reading circuit 12
Reason circuit 5 is for improving the electric signal that the reading circuit 12 is transferred to the host computer 3.In the present embodiment, the reading electricity
The electric signal that road 12 is transferred to the host computer 3 passes through the conditioning of the signal conditioning circuit 5, convenient for the host computer 3 to this
Signal is observed and handles in real time.
As shown in Figure 1, the data acquisition module 1 further includes feedback resistance 13 and bucking coil 14, the bucking coil
14 are electrically connected by the feedback resistance 13 with the reading circuit 12, and the bucking coil 14 passes through 13 institute of feedback resistance
SQUID11 magnetic flux described in the compensation data of feedback.In the present embodiment, the bucking coil 14 by the feedback resistance 13 with
The reading circuit 12 is electrically connected, the voltage that the feed circuit that the feedback resistance 12 is constituted is exported according to the reading circuit 12
Value influences the bucking coil 14, in order to make the SQUID11 be in best operating point, guarantees the highly sensitive of detection system
Degree, the data that the bucking coil 14 is fed back according to the feedback resistance 13 give the SQUID11 compensation respective numbers
Magnetic flux.
As shown in Figure 1, the SQUID11 is electrically connected with the host computer 3 using transmission cable 4.It is described in the present embodiment
Transmission cable 4 is used to connect the SQUID11 being placed in the Non-magnetic dewar container 2 and is placed in described in the bank base 6
Host computer 3 ensure that the reliable and stable of the SQUID11 and the host computer 3 data signal transmission between the two.
A kind of detection method of the underwater magnetic anomaly of bank base based on SQUID, the detection method at least include the following steps:
Step 1: setting magnetic anomaly threshold value and detection number of repetition are simultaneously input in the host computer 3；
Step 2: the SQUID11 acquisition water surface and underwater magnetic signal, and by the magnetic signals collected to institute
State reading circuit 12；
Step 3: the reading circuit 12 receives the magnetic signal and is tentatively amplified and be converted into electric signal transmission to described
Host computer 3；
Step 4: the host computer 3 receives, observes and handles the electric signal that the reading circuit 12 transmits, and generates detection
Report.
In the present embodiment, magnetic anomaly threshold value and detection number of repetition are arranged by operator first and are input to described upper
In machine 3, in order to guarantee that the detection efficient and accuracy of detection system, magnetic anomaly threshold value are set as 0.015V, detection number of repetition is set
For twice, then the SQUID11 starts to acquire the water surface and underwater magnetic signal, and the reading circuit 12 is by the SQUID11
The magnetic signal of acquisition is tentatively amplified and is converted into electric signal transmission to the host computer 3, and the host computer 3 is according to set
The magnetic anomaly threshold value set is observed the received electric signal of institute and handles in real time, as shown in Figure 4, Figure 5, if X-axis, Y-axis and Z axis
Magnetic signal changing value≤0.015V when, then detection system judges that the magnetic signal is normal, and detection system continues normal fortune at this time
Row；If in X-axis, Y-axis and Z axis when at least one magnetic signal changing value > 0.015V, detection system determines magnetic signal exception,
There is abnormal detected target on the underwater or water surface at this time, the host computer 3 will calculate the corresponding abnormal object of the magnetic signal
Position, then the SQUID11 repeats to detect again, ultimately produces detection and reports and alarm.In other embodiments, according to institute
The actual conditions of detection accuracy are needed, the magnetic anomaly threshold value and detection number of repetition can be other values.
It should be noted that heretofore described SQUID refers to superconducting quantum interference device (SQUID), it is a kind of measurement magnetic flux quantitative change
The magnetic flux transducer of change.
Detailed Jie has been carried out to a kind of underwater magnetic anomaly detection device of bank base based on SQUID provided by the present invention above
It continues.Used herein a specific example illustrates the principle and implementation of the invention, and the explanation of above embodiments is only
It is to be used to help understand core of the invention thought.It should be pointed out that for those skilled in the art, not
, can be with several improvements and modifications are made to the present invention under the premise of being detached from the principle of the invention, these improvement and modification are also fallen into
In the protection scope of the claims in the present invention.
Claims (8)
1. a kind of underwater magnetic anomaly detection device of bank base based on SQUID characterized by comprising
Data acquisition module (1), including SQUID (11) and reading circuit (12), the SQUID (11) is for acquiring the water surface and water
Under magnetic signal, the reading circuit (12) is used to by the magnetic signal that the SQUID (11) acquire convert electric signal, described
SQUID (11) is electrically connected with the reading circuit (12)；
Non-magnetic dewar container (2), the Non-magnetic dewar container (2) be set to underwater, built with can make the SQUID (11) protect
The liquid helium of superconducting state is held, the SQUID (11) is located in the Non-magnetic dewar container (2)；
Host computer (3) is located in the bank base (6), for receiving and handling the electric signal of the reading circuit (12) transmission, institute
Host computer (3) are stated to be electrically connected by the reading circuit (12) with the SQUID (11).
2. the underwater magnetic anomaly detection device of bank base as described in claim 1 based on SQUID, which is characterized in that the no magnetic
Dewar type container (2) is set on undersea continental shelf.
3. the underwater magnetic anomaly detection device of bank base as claimed in claim 2 based on SQUID, which is characterized in that the reading
Circuit (12) is set in the Non-magnetic dewar container (2).
4. the underwater magnetic anomaly detection device of bank base as claimed in claim 3 based on SQUID, which is characterized in that the reading
Circuit (12) includes DC bias supplies (121) for providing offset signal to the SQUID (11) and for will be described
The amplifier (122) that is tentatively amplified of magnetic signal of SQUID (11) acquisition, the DC bias supplies (121) with it is described
SQUID (11) electrical connection, the amplifier (122) are electrically connected with the host computer (3).
5. the underwater magnetic anomaly detection device of bank base as claimed in claim 4 based on SQUID, which is characterized in that described upper
Signal conditioning circuit (5) are equipped between machine (3) and the reading circuit (12), the signal conditioning circuit (5) is for improving institute
State the electric signal that reading circuit (12) is transferred to the host computer.
6. the underwater magnetic anomaly detection device of bank base as claimed in claim 5 based on SQUID, which is characterized in that the data
Acquisition module (1) further includes feedback resistance (13) and bucking coil (14), and the bucking coil (14) passes through the feedback resistance
(13) it is electrically connected with the reading circuit (12), the data that the bucking coil (14) is fed back by the feedback resistance (13)
Compensate the SQUID (11) magnetic flux.
7. the underwater magnetic anomaly detection device of bank base as claimed in claim 6 based on SQUID, which is characterized in that the SQUID
(11) it is electrically connected with the host computer (3) using transmission cable (4).
8. a kind of detection method of the underwater magnetic anomaly of bank base based on SQUID, which is characterized in that the detection method includes at least
Following steps:
Step 1: setting magnetic anomaly threshold value and detection number of repetition are simultaneously input in the host computer (3)；
Step 2: SQUID (11) the acquisition water surface and underwater magnetic signal, and by the magnetic signals collected to described
Reading circuit (12)；
Step 3: the reading circuit (12) receives the magnetic signal and is tentatively amplified and be converted into electric signal transmission on described
Position machine (3)；
Step 4: the host computer (3) receives, observes and handles the electric signal of the reading circuit (12) transmission, and generates detection
Report.
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Cited By (3)
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| CN111498066A (en) * | 2020-04-23 | 2020-08-07 | 大连海事大学 | Underwater weak magnetic signal collection robot and method for detecting target object by using same |
| CN111624527A (en) * | 2020-04-27 | 2020-09-04 | 北京航天控制仪器研究所 | Detection system and detection method for Debye magnetic field induced by underwater vehicle |
| CN112051615A (en) * | 2020-08-17 | 2020-12-08 | 北京海澳达科技有限公司 | Underwater magnetic anomaly detection system |
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