CN109839432A - A kind of impervious barrier detection system and method based on magnetic field - Google Patents
A kind of impervious barrier detection system and method based on magnetic field Download PDFInfo
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- CN109839432A CN109839432A CN201810247304.6A CN201810247304A CN109839432A CN 109839432 A CN109839432 A CN 109839432A CN 201810247304 A CN201810247304 A CN 201810247304A CN 109839432 A CN109839432 A CN 109839432A
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Abstract
The embodiment of the invention provides a kind of impervious barrier detection system and method based on magnetic field, are related to technical field of nondestructive testing, can be detected by magnetic field data in lower layer's impervious barrier breakage.The system includes: signal source, for providing electric signal；The transmitting terminal and receiving terminal of connecting signal source, are relatively arranged on the two sides of detected impervious barrier；Magnetic signal acquisition device, for acquiring detected impervious barrier institute overlay area magnetic field data；Processor, for being handled magnetic field data the breakage to determine detected impervious barrier.This method comprises: providing the first electric signal first for transmitting terminal, and the second electric signal is provided for receiving terminal；Then the magnetic field data for being detected impervious barrier institute overlay area is acquired, and magnetic field data is handled；The last breakage according to treated magnetic field data determines detected impervious barrier.Technical solution provided in an embodiment of the present invention is suitable for during the damage testing of impervious barrier.
Description
[technical field]
The present invention relates to technical field of nondestructive testing more particularly to a kind of impervious barrier detection systems and side based on magnetic field
Method.
[background technique]
With the rapid development of social economy, the quantity of China's Solid Waste Landfills gradually increases, therewith landfill yard
Bring pollution problem is also got worse.Wherein more severe is exactly the percolate that generates in landfill yard to underground water first
Pollution problem.
Domestic Solid Waste Landfills are generally equipped with bilayer or multilayer flexible barrier layers (Flexible now
Impervious Layer, FIL).Core seepage control system of the FIL as landfill yard, generallys use high density polyethylene (HDPE) (High
Density Polyethylene, HDPE) film composition.Currently, since the manufacturing defect of HDPE film itself, Landfill Site Design do not conform to
Reason, the machinery in work progress or sharp object damage and other reasons, HDPE film generally existing breakage before being put into use.Cause
This in order to effectively on source control percolate pollution problem, required according to relevant national standard, needed before being put into use
Integrity detection is carried out to FIL, to find the position of newly-built FIL breakage in time.
In the prior art, generally the breakage of upper layer FIL is detected using electrical detection method, usually on upper layer
One or more transmitting terminals are placed in the top of FIL, and on upper layer, one or more receiving terminal are placed in the lower section of FIL, work as upper layer
When FIL has breakage, emit terminal and receiving terminal by damaged and constitute current supply circuit, then by the electric field to current supply circuit into
Row analysis, judges the position of upper layer FIL breakage.
It realizes in process of the present invention, at least there are the following problems in the prior art for inventor's discovery:
Due to FIL layers of insulating effect, in the system with two or more layers impervious barrier, electricity inspection in the prior art
Survey method can not be used for middle lower layer FIL layers of damage testing.
[summary of the invention]
In view of this, the embodiment of the invention provides a kind of impervious barrier detection system and method based on magnetic field, magnetic field number
According to the breakage for determining impervious barrier, do not influenced by impervious barrier insulating effect, can be used for detecting in lower layer's impervious barrier it is broken
Damage.
On the one hand, the embodiment of the present invention provides a kind of impervious barrier detection system based on magnetic field, the system comprises:
Signal source, for providing electric signal；
Emit terminal, is connected to the first end of the signal source；
Receiving terminal is connected to the second end of the signal source；Wherein, the transmitting terminal is opposite with the receiving terminal
It is set to the two sides of detected impervious barrier；
Magnetic signal acquisition device, for acquiring the magnetic field data of the detected impervious barrier institute overlay area；
Processor, for being handled the magnetic field data with the breakage of the determination detected impervious barrier.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation,
If having adjacent impervious barrier in side, the detected impervious barrier where the transmitting terminal, then the transmitting terminal is set
It is placed between the detected impervious barrier and adjacent impervious barrier；And/or
If the detected impervious barrier has adjacent impervious barrier, then the receiving terminal is set in side where the receiving terminal
It is placed between the detected impervious barrier and adjacent impervious barrier.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the magnetic signal
Acquisition device is mobile collection device.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the magnetic signal
Acquisition device includes:
First sensor and second sensor are used to incude the magnetic field number of the detected impervious barrier institute overlay area
According to the spacing between the first sensor and the second sensor is fixed；
Data collecting instrument is all connected with the first sensor, the second sensor, for acquiring first sensing
The magnetic field data that device and the second sensor sense.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the processor
Difference processing is carried out specifically for the magnetic field data sensed to the first sensor, the second sensor.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the magnetic field number
According to including at least one of magnetic flux, magnetic induction intensity, magnetic density.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the system is also
Include:
Display device is connected to the processor, for showing the processor to the processing result of the magnetic field data.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the signal source
Include:
Signal generation apparatus；
Power amplifier is all connected with the signal generation apparatus, the transmitting terminal, the receiving terminal.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the magnetic signal
Acquisition device further include:
Signal regulating device, the magnetic field data for sensing to the first sensor and the second sensor carry out
Signal condition；
The signal condition include signal amplification, filtering, detection, disappear tremble, level conversion, at least one of isolation.
On the other hand, the embodiment of the present invention provides a kind of impervious barrier detection method based on magnetic field, is suitable for as above any
System described in aspect and any possible implementation, which comprises
Signal source provides the first electric signal for transmitting terminal, and provides the second electric signal for receiving terminal；
Magnetic signal acquisition device acquires the magnetic field data for being detected impervious barrier institute overlay area；
Processor handles the magnetic field data；
The processor is according to the breakage of treated magnetic field data the determines detected impervious barrier.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the processor
According to the breakage of treated magnetic field data the determines detected impervious barrier, comprising:
If any position treated magnetic field data is greater than damaged threshold value in the detected impervious barrier institute overlay area,
It is damaged that the processor determines that the position occurs.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the magnetic field number
According to the induction magnetic current generated by the damage location of the detected impervious barrier including the transmitting terminal and receiving terminal
Field data.
The embodiment of the invention provides a kind of impervious barrier detection system and method based on magnetic field, control signal source are transmitting
Terminal provides the first electric signal, provides the second electric signal for receiving terminal, and transmitting terminal and receiving terminal are relatively arranged on tested
The two sides for surveying impervious barrier emit and are powered back between terminal and receiving terminal by damage location composition when impervious barrier has breakage
Road acquires the magnetic field data for being detected impervious barrier institute overlay area by magnetic signal acquisition device at this time, the magnetic effect based on electric current
It answers, maximum by the electric current of damage location, magnetic field is also most strong, therefore described be detected can be determined according to the size of magnetic field data
The breakage of impervious barrier.Technical solution provided in an embodiment of the present invention determines the breakage of impervious barrier by magnetic field data,
The influence that not will receive impervious barrier insulating effect can detecte middle lower layer's impervious barrier in the system with multilayer impervious barrier
It is damaged.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of impervious barrier detection system composite structural diagram based on magnetic field provided in an embodiment of the present invention；
Fig. 2 is a kind of impervious barrier detection system composed structure schematic block diagram based on magnetic field provided in an embodiment of the present invention；
Fig. 3 is a kind of impervious barrier detection method flow chart based on magnetic field provided in an embodiment of the present invention；
Fig. 4 is another impervious barrier detection method flow chart based on magnetic field provided in an embodiment of the present invention.
[specific embodiment]
For a better understanding of the technical solution of the present invention, being retouched in detail to the embodiment of the present invention with reference to the accompanying drawing
It states.
It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
Its embodiment, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination " or " in response to detection ".Similarly, depend on context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when determining " or " in response to determination " or " when the detection (condition of statement
Or event) when " or " in response to detection (condition or event of statement) ".
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
The nouns of locality such as "upper", "lower" described in the embodiment of the present invention, "left", "right" be come with angle shown in the drawings into
Row description, it should not be construed as the restriction to the embodiment of the present invention.Furthermore within a context, it is also necessary to understanding, when mentioning
When one device is "above" or "below" another device, it can not only be formed directly into another device "upper" or "lower",
It can also be indirectly formed by intermediate device in another device "upper" or "lower".
The impervious barrier detection system based on magnetic field that the embodiment of the invention provides a kind of, the damage testing suitable for impervious barrier
In the process.
Based on the landfill yard for being equipped with two layers of impervious barrier, lower layer's impervious barrier is the embodiment of the present invention as impervious barrier is detected
Example is illustrated, and certainly, technical solution provided in an embodiment of the present invention is not limited to the landfill yard of two layers of impervious barrier, such as can be with
Be be equipped with the landfill yard of more layers such as one layer or three layers, four layers or other need to impervious barrier carry out damage testing
Chemical industry pond, evaporation pond etc..
Under normal conditions, impervious barrier is the good highly resistant material of insulation performance, such as high density polyethylene (HDPE) (High
Density Polyethylene, HDPE).
As shown in Figure 1, the system comprises:
Signal source 11, for providing electric signal.
Emit terminal 12, is connected to the first end of the signal source 11；Receiving terminal 13 is connected to the signal source 11
Second end；Transmitting terminal 12 and receiving terminal 13 are relatively arranged on the two sides of detected impervious barrier.
Magnetic signal acquisition device 14, for acquiring the magnetic field data of the detected impervious barrier institute overlay area.
It should be noted that being detected impervious barrier institute overlay area includes: to be somebody's turn to do in space where being detected impervious barrier at this
The region in the region and/or downside that are detected on the upside of impervious barrier.
Wherein, magnetic field data can include but is not limited to magnetic flux, magnetic induction intensity, any one in magnetic density or more
Kind.Magnetic induction intensity is used to indicate the power in magnetic field in physics, and magnetic induction intensity is bigger, and expression magnetic induction is stronger.Magnetic induction
Intensity indicates that the international system of units (SI) is tesla (being expressed as T) usually using symbol B.And magnetic induction density B and some plane face
The product of product S, the referred to as magnetic flux of the plane indicate, international system of units (SI) weber (is expressed as Wb) usually using symbol Φ.Magnetic
Density is to define magnetic induction density B from another angle, it indicate to pass perpendicularly through the magnetic line of force of unit area number, can be with
Reflect the density degree of the magnetic line of force in quantity.
Processor 15, for being handled the magnetic field data with the breakage of the determination detected impervious barrier.
Specifically, signal source 11 can be an exciting signal source, the electric signal provided can be swashing for direct current or exchange
Encourage signal.In one possible implementation, if signal source 11 provides continuous current excitation signal, transmitting terminal 12 is connected
The output end of signal source 11, the input terminal of 13 connecting signal source of receiving terminal.
For emitting the specific location of terminal 12 and receiving terminal 13, it can be transmitting terminal 12 and be placed in detected impervious barrier
In the medium of upside, receiving terminal 13 is placed in the medium on the downside of detected impervious barrier；Alternatively, transmitting terminal 12 be placed in it is detected
In medium on the downside of impervious barrier, the medium that receiving terminal 13 is placed on the upside of detected impervious barrier is medium.Wherein, medium can be wet
The soil of profit, geotechnological guide net or geosynthetics clay liner (Geosynthetic Clay by pouring processing
Liner, GCL) etc. medium with good conductivity.
In a kind of possible application scenarios, if detected impervious barrier has adjacent impervious barrier in transmitting 12 place side of terminal,
Then emit terminal 12 to be set between detected impervious barrier and adjacent impervious barrier；If being detected anti-in 13 place side of receiving terminal
Infiltration layer has adjacent impervious barrier, then receiving terminal 13 is set between detected impervious barrier and adjacent impervious barrier.As shown in fig. 1,
Transmitting terminal 12 is placed between detected impervious barrier and adjacent upper impervious barrier by presetting discharge guiding pipe in landfill yard by pouring
It (is placed in the water or salt water between two membranes) in the geotechnological guide net of processing；Receiving terminal 13 is buried at detected antiseepage
In the soil in layer left side.
In a kind of feasible implementation, magnetic signal acquisition device 14 can be the mobile collection device of dual sensor.
14 position of magnetic signal acquisition device flexibly moves, and can carry out grid type wheel in the entire impervious barrier institute overlay area that is detected
It follows, to acquire the magnetic field data of each position, and at least two magnetic field datas is acquired by dual sensor every time.Certainly, magnetic
Signal pickup assembly 14 is also possible to single-sensor or multiple sensors, and it is not limited in the embodiment of the present invention.In view of magnetic
The factor of two aspects of accuracy, manufacturing cost of field data, magnetic signal acquisition device 14 can use dual sensor.
Wherein, sensor mentioned here is high-precision magnetometric sensor, the specific can be that rotary proton sensor.?
When sensor sensing magnetic field data, inside is greater than rich in the current polarizing that the liquid of proton is passed through in electric current pop-off
The rotary proton signal of noise level is decayed, and this rotary proton signal is the magnetic field data that sensor sensing obtains.
Processor 15 handles magnetic field data, and then provides magnetic field power point in detected impervious barrier institute overlay area
The processing such as the schematic images of cloth or the magnetic field data for being easy to discrimination magnetic field power is as a result, and save the magnetic field number after final process
According to.Wherein, averaging, difference processing, Fast Fourier Transform (FFT), small echo change can include but is not limited to the processing of magnetic field data
At least one of change.
Processor 15 integrates in a computer under normal conditions, and computer can collect processing function, control function and show
Show that function in one, can be personal computer (Personal Computer, PC), personal digital assistant (Personal
Digital Assistant, PDA), radio hand-held equipment, tablet computer (Tablet Computer), mobile phone etc..In order to more preferable
The detection for impervious barrier, select in the embodiment of the present invention handheld tablet computer as central processing unit, the hand-held is flat
Plate computer meets the hardware index of software development, and has certain waterproof ability.
If being detected impervious barrier has breakage, emits terminal 12 and receiving terminal 13 and powered back by damage location formation
Road, the magnetic effect (Biot-Savart law, Biot-Savart Law) based on electric current is maximum by the electric current of damage location,
Induced magnetic field is also most strong, acquires the magnetic field data for being detected impervious barrier institute overlay area by magnetic signal acquisition device 14 at this time,
Damage location can be determined based on the size of magnetic field data.
It should be noted that damage location can be determined according to the imaging of magnetic field data in specific application scenarios, than
Such as in the three-dimensional simulation figure in magnetic field, wave crest or wave trough position may be damage location.
Optionally, as shown in Figure 1, the magnetic signal acquisition device 14 includes:
First sensor 141 and second sensor 142 are used to incude the magnetic of the detected impervious barrier institute overlay area
Field data, the spacing between the first sensor 141 and the second sensor 142 are fixed.
Data collecting instrument 143 is all connected with, for acquiring with the first sensor 141, the second sensor 142
State the magnetic field data that first sensor 141 is sensed with the second sensor 142.
Wherein, data collecting instrument 143 enables sampling channel, setting sampling range, setting sample frequency according to sampling policy
And orderly multichannel magnetic field data acquisition is carried out, and pass through universal serial bus (Universal Serial Bus, USB) or nothing
Magnetic field data is uploaded to processor 15 by line transmission.
It should be noted that magnetic signal acquisition device 14 includes the fixed first sensor 141 of spacing and second sensor
142, the acquisition mode of this double sensor type does difference to each collected at least two magnetic field data by processor 15
Processing can effectively eliminate earth's magnetic field and other interference magnetic field reasons for its use noises, and obtained magnetic field data signal-to-noise ratio is more
Height improves detection accuracy.And in order to better meet detection demand, between first sensor 141 and second sensor 142
The size of constant spacing can be adjusted.
Optionally, the system also includes:
Display device is connect with the processor 15, for showing processing of the processor 15 to the magnetic field data
As a result.
Specifically, display device can integrate in a computer as processor 15.
Optionally, the signal source 11 includes:
Signal generation apparatus and power amplifier, power amplifier and signal generation apparatus, transmitting terminal 12, receiving terminal
13 are all connected with.
Specifically, signal generation apparatus can export continuous current excitation signal or low-frequency ac pumping signal.And signal is sent out
Generating apparatus can be communicated by usb protocol with processor 15, carry out signal output by the control command of processor 15.
The effect of power amplifier is the small signal for generating signal generation apparatus, is amplified using linear power.Function
Rate amplifier has the characteristics that interference is small, good linearity, the distortion factor is small, stability is high.
Optionally, the magnetic signal acquisition device 14 further include:
Signal regulating device, the magnetic field number for being sensed to the first sensor 141 and the second sensor 142
According to progress signal condition.
The magnetic field that periphery interference magnetic field and earth's magnetic field generate transmitting terminal 12 and receiving terminal 13 in order to prevent generates
Interference, needs the magnetic field data sensed by signal regulating device to first sensor 141 and second sensor 142 to carry out letter
Number conditioning improves detection sensitivity to enhance signal-to-noise ratio.Wherein, signal condition includes but is not limited to signal amplification, filtering, inspection
Wave, disappear tremble, at least one of level conversion or isolation.
The structure composition of impervious barrier detection system is shown for clarity, and the embodiment of the invention also provides as shown in Figure 2
Detection system structure shows first sensor 141 and second sensor 142, signal regulating device 144, number in Fig. 2
It is closed according to the connection between Acquisition Instrument 143, processor 15, display device 16 and signal generation apparatus 111, power amplifier 112
System.
The impervious barrier detection system based on magnetic field that foregoing invention embodiment provides emits terminal 12 and 13 phase of receiving terminal
To the two sides for being set to detected impervious barrier, when impervious barrier has breakage, emit between terminal 12 and receiving terminal 13 by broken
It damages position and constitutes current supply circuit, acquire the magnetic field number for being detected impervious barrier institute overlay area by magnetic signal acquisition device 14 at this time
According to the magnetic effect based on electric current is maximum by the electric current of damage location, and magnetic field is also most strong, therefore can be according to magnetic field data
Size determines the breakage of the detected impervious barrier.Technical solution provided in an embodiment of the present invention is determined by magnetic field data
The breakage of impervious barrier not will receive the influence of impervious barrier insulating effect, in the system with multilayer impervious barrier, Ke Yijian
The breakage of Ce Zhong lower layer impervious barrier.
The impervious barrier detection method based on magnetic field that the embodiment of the invention provides a kind of is suitable for any possible reality as above
System described in existing mode, as shown in Figure 3, which comprises
201, signal source provides the first electric signal for transmitting terminal, and provides the second electric signal for receiving terminal.
Wherein, first electric signal is direct-flow positive pole signal (pumping signal), and second electric signal is direct current cathode
Signal (pumping signal)；Alternatively, first electric signal and second electric signal are low-frequency ac signal (pumping signal).
202, magnetic signal acquisition device acquires the magnetic field data for being detected impervious barrier institute overlay area.
It should be noted that the magnetic field of designated position is mainly by transmitting terminal and receiving terminal by being detected impervious barrier
The magnetic field of the current generated induction of damage location and earth's magnetic field are constituted.
When detected impervious barrier has damaged, emits terminal and receiving terminal by damage location and forms current supply circuit,
Maximum by the electric current of damage location based on Biot-Savart law, the induced magnetic field of generation is also most strong, therefore is believed based on magnetic
Number acquisition device repeating query is entirely detected the region that impervious barrier is covered, and acquires magnetic field data, and then according to the big of magnetic field data
Small judgement damage location.
203, processor handles the magnetic field data.
Specifically, processor can carry out data processing to magnetic field data, and then provide the detected impervious barrier institute area of coverage
The processing results such as the schematic diagram of magnetic field strength distribution or the magnetic field data for being easy to discrimination magnetic field power in domain.
204, the processor is according to the breakage of treated magnetic field data the determines detected impervious barrier.
Specifically, can judge that being detected impervious barrier has several places' breakages according to the processing result of magnetic field data, and damaged
Specific location etc..
The impervious barrier detection method based on magnetic field that foregoing invention embodiment provides controls signal source and provides for transmitting terminal
First electric signal provides the second electric signal for receiving terminal, emits terminal and receiving terminal is relatively arranged on detected impervious barrier
Two sides emit when impervious barrier has breakage and constitute current supply circuit by damaged between terminal and receiving terminal, pass through magnetic at this time
Signal pickup assembly acquires the magnetic field data for being detected impervious barrier institute overlay area, and the magnetic effect based on electric current passes through damaged position
The electric current set is maximum, and magnetic field is also most strong, therefore the breakage of the detected impervious barrier can be determined according to the size of magnetic field data
Situation.Technical solution provided in an embodiment of the present invention determines the breakage of impervious barrier by magnetic field data, not will receive antiseepage
The influence of layer insulating effect can detecte the breakage of middle lower layer's impervious barrier in the system with multilayer impervious barrier.
Furthermore, it is understood that in conjunction with preceding method process, the alternatively possible implementation of the embodiment of the present invention, for step
Rapid 204 realization additionally provides following methods process to the specific determination method of damage location, as shown in Figure 4, comprising:
If 2041, any position treated magnetic field data is greater than damaged threshold in the detected impervious barrier institute overlay area
Value, then it is damaged to determine that the position occurs for the processor.
Specifically, damaged threshold value can be the magnetic field data average value of the multiple positions in position periphery, it is also possible to one
Empirical value, or can be determined by the average magnetic field data for being entirely detected impervious barrier institute overlay area.
When treated for some position in detected impervious barrier institute overlay area, there is wave crest in magnetic field data under normal conditions
It is damaged then to can be determined that the position occurs for formula variation.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or group
Part can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown
Or the mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, device or unit it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
It is each that device (can be personal computer, server or network equipment etc.) or processor (Processor) execute the present invention
The part steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. it is various
It can store the medium of program code.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of impervious barrier detection system based on magnetic field, which is characterized in that the system comprises:
Signal source, for providing electric signal；
Emit terminal, is connected to the first end of the signal source；
Receiving terminal is connected to the second end of the signal source；Wherein, the transmitting terminal is oppositely arranged with the receiving terminal
In the two sides for being detected impervious barrier；
Magnetic signal acquisition device, for acquiring the magnetic field data of the detected impervious barrier institute overlay area；
Processor, for being handled the magnetic field data with the breakage of the determination detected impervious barrier.
2. system according to claim 1, which is characterized in that
If having adjacent impervious barrier in side, the detected impervious barrier where the transmitting terminal, then the transmitting terminal is set to
Between the detected impervious barrier and adjacent impervious barrier；And/or
If the detected impervious barrier has adjacent impervious barrier, then the receiving terminal is set in side where the receiving terminal
Between the detected impervious barrier and adjacent impervious barrier.
3. system according to claim 1, which is characterized in that the magnetic signal acquisition device is mobile collection device.
4. system according to claim 1, which is characterized in that the magnetic signal acquisition device includes:
First sensor and second sensor are used to incude the magnetic field data of the detected impervious barrier institute overlay area, institute
The spacing stated between first sensor and the second sensor is fixed；
Data collecting instrument is all connected with the first sensor, the second sensor, for acquire the first sensor with
The magnetic field data that the second sensor senses.
5. system according to claim 4, which is characterized in that the processor be specifically used for the first sensor,
The magnetic field data that the second sensor senses carries out difference processing.
6. system according to claim 1, which is characterized in that the magnetic field data is strong including at least magnetic flux, magnetic induction
One of degree, magnetic density.
7. system according to claim 4, which is characterized in that the magnetic signal acquisition device further include:
Signal regulating device, the magnetic field data for sensing to the first sensor and the second sensor carry out signal
Conditioning；
The signal condition include signal amplification, filtering, detection, disappear tremble, level conversion at least one of be isolated.
8. a kind of impervious barrier detection method based on magnetic field, which is characterized in that be suitable for the described in any item systems of claim 1-9
System, which comprises
Signal source provides the first electric signal for transmitting terminal, and provides the second electric signal for receiving terminal；
Magnetic signal acquisition device acquires the magnetic field data for being detected impervious barrier institute overlay area；
Processor handles the magnetic field data；
The processor is according to the breakage of treated magnetic field data the determines detected impervious barrier.
9. according to the method described in claim 8, it is characterized in that, the processor treated that magnetic field data is true according to described
The breakage of the fixed detected impervious barrier, comprising:
If any position treated magnetic field data is greater than damaged threshold value in the detected impervious barrier institute overlay area, described
It is damaged that processor determines that the position occurs.
10. according to the method described in claim 8, it is characterized in that, the magnetic field data includes the transmitting terminal and reception
The terminal induced magnetic field data current generated by the damage location of the detected impervious barrier.
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| Publication number | Priority date | Publication date | Assignee | Title |
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