CN109839431A - A kind of system and method carrying out impervious barrier detection using magnetic field - Google Patents
A kind of system and method carrying out impervious barrier detection using magnetic field Download PDFInfo
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- CN109839431A CN109839431A CN201810247252.2A CN201810247252A CN109839431A CN 109839431 A CN109839431 A CN 109839431A CN 201810247252 A CN201810247252 A CN 201810247252A CN 109839431 A CN109839431 A CN 109839431A
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Abstract
The embodiment of the invention provides it is a kind of using magnetic field carry out impervious barrier detection system and method, be 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；Emit terminal and receiving terminal, is relatively arranged on the two sides of detected impervious barrier；First magnetic signal acquisition device, for acquiring the magnetic field data of designated position；Second magnetic signal acquisition device, for acquiring the magnetic field data of detected impervious barrier institute overlay area；Processor, for handling the collected magnetic field data of magnetic signal acquisition device, to determine the breakage of detected impervious barrier.This method comprises: providing electric signal；The magnetic field data of designated position and detected impervious barrier institute overlay area is acquired, and collected magnetic field data is handled；The breakage of detected impervious barrier is determined according to treated magnetic field data.Technical solution provided in an embodiment of the present invention is suitable for the damage testing process of impervious barrier.
Description
[technical field]
The present invention relates to technical field of nondestructive testing more particularly to it is a kind of using magnetic field carry out impervious barrier detection system and
Method.
[background technique]
With the rapid development of social economy, the quantity of China's Solid Waste Landfills gradually increases, therewith landfill yard
The pollution problem that middle landfill leachate generates is increasingly serious, this pollution problem urgent need to resolve.
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, electrical detection is generally used
Method detects the breakage of upper layer FIL, usually one or more transmitting terminals is placed in the top of upper layer FIL, upper
One or more receiving terminal are placed in the lower section of layer FIL, when upper layer, FIL has breakage, emit terminal and receiving terminal pass through it is broken
Damage constitutes current supply circuit, is then analyzed by the electric field to current supply circuit, 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 multilayer impervious barrier, electrical detection method in the prior art
It can not be used for middle lower layer FIL layers of damage testing.
[summary of the invention]
In view of this, leading to the embodiment of the invention provides a kind of system and method for carrying out impervious barrier detection using magnetic field
The breakage that magnetic field data determines impervious barrier is crossed, is not influenced by impervious barrier insulating effect, it is anti-to can be used for lower layer in detection
The breakage of infiltration layer.
On the one hand, the embodiment of the present invention provides a kind of system for carrying out impervious barrier detection using 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；
First magnetic signal acquisition device, is set to designated position, for acquiring the magnetic field data of the designated position；
Second magnetic signal acquisition device, for acquiring the magnetic field data of the detected impervious barrier institute overlay area；
Processor, for collected to the first magnetic signal acquisition device and the second magnetic signal acquisition device
Magnetic field data is handled, 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, first magnetic
Signal pickup assembly includes:
First sensor, for incuding the magnetic field data of the designated position；
First data collecting instrument is connect with the first sensor, the magnetic sensed for acquiring the first sensor
Field data.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, second magnetic
Signal pickup assembly includes:
Second sensor, for incuding the magnetic field data of the detected impervious barrier institute overlay area；
Second data collecting instrument is connect with the second sensor, the magnetic sensed for acquiring the second sensor
Field data.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation,
The second sensor is single-sensor；Alternatively,
The second sensor is sensor array, and the sensor array is in the detected impervious barrier institute overlay area
It is interior to be distributed in grid type.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, the processor
Specifically for the first magnetic signal acquisition device and the collected magnetic field data of the second magnetic signal acquisition device into
Row difference processing.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, first magnetic
Signal pickup assembly and the collected magnetic field data of the second magnetic signal acquisition device are strong including at least magnetic flux, magnetic induction
One of degree, 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 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, first magnetic
Signal pickup assembly further include:
First signal regulating device, the magnetic field data for sensing to the first sensor carry out signal condition；
The signal condition include signal amplification, filtering, detection, disappear tremble, level conversion, at least one of isolation.
The aspect and any possible implementation manners as described above, it is further provided a kind of implementation, second magnetic
Signal pickup assembly further include:
Second signal conditioning device, the magnetic field data for sensing to 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 method for carrying out impervious barrier detection using magnetic field, is suitable for as above
System described in either side 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；
First time magnetic signal acquisition device acquires the magnetic field data of designated position, and second of magnetic signal acquisition device is adopted
Collect the magnetic field data for being detected impervious barrier institute overlay area；
Processor is in the designated position and the detected impervious barrier institute collected magnetic field data in overlay area
It is handled；
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, it is described according to institute
Stating treated, magnetic field data determines the breakage of the 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 to determine 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 system and method for carrying out impervious barrier detection using magnetic field, control signal source is
Transmitting terminal provides the first electric signal, provides the second electric signal for receiving terminal, emits terminal and receiving terminal is relatively arranged on
The two sides of impervious barrier are detected, when impervious barrier has breakage, emits and confession is constituted by damage location between terminal and receiving terminal
Electrical circuit is acquired the magnetic field data of designated position by the first magnetic signal acquisition device, and passes through the second magnetic signal acquisition device
The magnetic field data for being detected impervious barrier institute overlay area is acquired, and to the magnetic field data of designated position and is detected by processor
The magnetic field data of impervious barrier institute overlay area is handled, so that it is determined that being detected the magnetic field strength of impervious barrier institute overlay area.
Magnetic effect based on electric current, maximum by the electric current of damage location, magnetic field is also most strong, therefore can be according to the size of magnetic field strength
Determine the breakage of the detected impervious barrier.Technical solution provided in an embodiment of the present invention determines antiseepage by magnetic field data
The breakage of layer, not will receive the influence of impervious barrier insulating effect, in the system with multilayer impervious barrier, can detecte
The breakage of lower layer's impervious barrier.
[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 system composite structural diagram that impervious barrier detection is carried out using magnetic field provided in an embodiment of the present invention；
Fig. 2 is a kind of system composed structure schematic block that impervious barrier detection is carried out using magnetic field provided in an embodiment of the present invention
Figure；
Fig. 3 is a kind of method flow diagram that impervious barrier detection is carried out using magnetic field provided in an embodiment of the present invention；
Fig. 4 is another method flow diagram that impervious barrier detection is carried out using 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 embodiment of the invention provides a kind of systems for carrying out impervious barrier detection using magnetic field, the breakage suitable for impervious barrier
In detection 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.
First magnetic signal acquisition device 14, is set to designated position, for acquiring the magnetic field data of the designated position.
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.
Second magnetic signal acquisition device 15, 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.
Processor 16, for being adopted to the first magnetic signal acquisition device 14 and the second magnetic signal acquisition device 15
The magnetic field data collected is handled, 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 led by presetting the geotechnique that discharge guiding pipe is placed between detected impervious barrier and adjacent upper impervious barrier in landfill yard
It (is placed in the water or salt water between two membranes) in row's net；Receiving terminal 13 is buried at the soil on the left of detected impervious barrier
In.
First magnetic signal acquisition device 14 is fixed device, is arranged at designated position.In a kind of feasible implementation
In, designated position can be certain near in detected impervious barrier institute overlay area or outside detected impervious barrier institute overlay area
A fixed position, which can be by as base position.In another feasible implementation, designated position can also
To be infinite point, i.e., infinite point is by as base position.The magnetic field data of base position is covered as impervious barrier is detected
The background value in magnetic field namely reference magnetic field data in cover area.
Second magnetic signal acquisition device 15 can be fixed acquisition device or mobile collection device, the second magnetic signal acquisition
Device 15 can be acquired and be detected in impervious barrier institute overlay area each by way of grid type repeating query or grid type distribution
The magnetic field data of position.
The base position magnetic field data of first magnetic signal acquisition device 14 acquisition is as background value, the second magnetic signal acquisition dress
The magnetic field data of detected impervious barrier institute overlay area of 15 acquisitions is set as measured value.By detected impervious barrier institute overlay area
The measured value and a reference value of interior each position carry out Difference Calculation, and then determine the magnetic field strength of each position, and this collaboration is surveyed
The mode of amount, system structure is simple, and obtained magnetic field strength eliminates earth's magnetic field influence of noise, and accuracy is relatively high.
Processor 16 is to the first magnetic signal acquisition device 14 and the collected magnetic field number of the second magnetic signal acquisition device 15
According to being handled, and then provides the schematic images of magnetic field strength distribution in detected impervious barrier institute overlay area or be easy to discrimination
The processing such as magnetic field data of magnetic field power is as a result, and save the magnetic field data after final process.Wherein, to the processing of magnetic field data
It can include but is not limited at least one of difference processing, averaging, Fast Fourier Transform (FFT), wavelet transformation.
Processor 16 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..Wherein, it is
Preferably for carrying out impervious barrier detection using magnetic field, select handheld tablet computer as central in the embodiment of the present invention
Processor, which 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, determines to be detected by the first magnetic signal acquisition device 14 and the second magnetic signal acquisition device 15 at this time and prevent
The magnetic field strength of infiltration layer institute overlay area, can based on magnitude of field intensity determine damage location.
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 first magnetic signal acquisition device 14 includes:
First sensor 141, for incuding the magnetic field data of the designated position.
Wherein, sensor is high-precision magnetometric sensor, the specific can be that rotary proton sensor.In sensor sensing
When magnetic field data, the current polarizing that inside is passed through rich in the liquid of proton, in electric current pop-off, greater than noise level
The decaying of rotary proton signal, this rotary proton signal is the magnetic field data that sensor sensing obtains.
First data collecting instrument 142 is connect with the first sensor 141, is felt for acquiring the first sensor 141
The magnetic field data that should be arrived.
Wherein, data collecting instrument 142 enables sampling channel, setting sample frequency to the magnetic of designated position according to sampling policy
Field data is acquired, and by universal serial bus (Universal Serial Bus, USB) or is wirelessly transferred magnetic field number
According to being uploaded to processor 16.
Optionally, as shown in Figure 1, the second magnetic signal acquisition device 15 includes:
Second sensor 151, for incuding the magnetic field data of the detected impervious barrier institute overlay area；
Second data collecting instrument 152 is connect with the second sensor 151, is felt for acquiring the second sensor 151
The magnetic field data that should be arrived.
Wherein, data collecting instrument 152 enables sampling channel, setting sampling range, setting sample frequency according to sampling policy
Magnetic field data in detected impervious barrier institute overlay area is orderly acquired, and by logical USB or is wirelessly transferred magnetic field
Data are uploaded to processor 16.
Optionally, the second sensor 151 is single-sensor.The second magnetic signal acquisition device 15 can be shifting at this time
Dynamic acquisition device, acquires the magnetic field number of each position in detected impervious barrier institute overlay area by way of grid type poll
According to.
Alternatively, the second sensor 151 is sensor array.The second magnetic signal acquisition device 15 is fixed dress at this time
It sets, each position in detected impervious barrier institute overlay area can be acquired in such a way that grid type is distributed several sensors
Magnetic field data.
In Fig. 1, second sensor 151 is illustrated with single-sensor.
Optionally, the system also includes:
Display device is connect with the processor 16, for showing the processor 16 to the processing result of magnetic field data.
Specifically, display device can integrate in a computer as processor 16.
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 16, carry out signal output by the control command of processor 16.
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 first magnetic signal acquisition device 14 further include:
First signal regulating device, the magnetic field data for sensing to the first sensor 141 carry out signal condition.
In order to improve detection accuracy, the magnetic field data sensed by signal regulating device to first sensor 141 is needed
Signal condition is carried out to enhance signal-to-noise ratio, improves detection sensitivity.Wherein, signal condition includes but is not limited to signal amplification, filter
Wave, detection, disappear tremble, at least one of level conversion or isolation.
Optionally, the second magnetic signal acquisition device 15 further include:
Second signal conditioning device, the magnetic field data for sensing to the second sensor 151 carry out 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 to carry out signal condition to the magnetic field data that second sensor 151 senses by signal regulating device to enhance letter
It makes an uproar and compares, improve detection sensitivity.Wherein, signal condition include but is not limited to signal amplification, filtering, detection, disappear tremble, level conversion
Or at least one of 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, the first signal regulating device 143, the acquisition of the first data in Fig. 2
Instrument 142, second sensor 151, second signal conditioning device 153, the second data collecting instrument 152, processor 16, display device 17
And the connection relationship between signal generation apparatus 111, power amplifier 112.
The system for carrying out impervious barrier detection using magnetic field that foregoing invention embodiment provides, emits terminal 12 and receiving terminal
13 are relatively arranged on the two sides of detected impervious barrier, when impervious barrier has breakage, emit and lead between terminal 12 and receiving terminal 13
It crosses damage location and constitutes current supply circuit, magnetic field data, the second magnetic of designated position are acquired by the first magnetic signal acquisition device 14
Signal pickup assembly 15 acquires the magnetic field data for being detected impervious barrier institute overlay area, and by processor 16 to designated position
Magnetic field data and the magnetic field data of detected impervious barrier institute overlay area are handled, and are covered so that it is determined that being detected impervious barrier
The magnetic field strength in region.Magnetic effect based on electric current, maximum by the electric current of damage location, magnetic field is also most strong, therefore can root
The breakage of the detected impervious barrier is determined according to the size of magnetic field strength.Technical solution provided in an embodiment of the present invention passes through
Magnetic field data determines the breakage of impervious barrier, not will receive the influence of impervious barrier insulating effect, with multilayer impervious barrier
In system, the breakage of middle lower layer's impervious barrier can detecte.
The embodiment of the invention provides a kind of methods for carrying out impervious barrier detection using magnetic field, are suitable for any possibility as above
Implementation described in system, 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, the magnetic field data of the first magnetic signal acquisition device acquisition designated position, and the second magnetic signal acquisition device is adopted
Collect 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.
203, processor is in the collected magnetic field in the designated position and the detected impervious barrier institute overlay area
Data are handled.
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, induced magnetic field is also most strong, passes through the first magnetic signal at this time
Acquisition device acquires the magnetic field data of designated position, and acquires detected impervious barrier by the second magnetic signal acquisition device and covered
The magnetic field data in region further carries out at difference the magnetic field data that two magnetic signal acquisition devices acquire by processor
Reason determines the magnetic field strength of detected impervious barrier institute overlay area, can determine damage location based on the size of magnetic field strength.
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 method for carrying out impervious barrier detection using magnetic field that foregoing invention embodiment provides, control signal source are transmitting terminal
First electric signal is provided, the second electric signal is provided for receiving terminal, emits terminal and receiving terminal is relatively arranged on to be detected and prevent
The two sides of infiltration layer emit when impervious barrier has breakage and constitute current supply circuit by damage location between terminal and receiving terminal, lead to
The magnetic field data of the first magnetic signal acquisition device acquisition designated position is crossed, and is detected by the acquisition of the second magnetic signal acquisition device
The magnetic field data of impervious barrier institute overlay area, and the magnetic field data of designated position and detected impervious barrier are covered by processor
The magnetic field data of cover area is handled, so that it is determined that being detected the magnetic field strength of impervious barrier institute overlay area.Based on electric current
Magnetic effect, maximum by the electric current of damage location, magnetic field is also most strong, therefore can determine the quilt according to the size of magnetic field strength
Detect the breakage of impervious barrier.Technical solution provided in an embodiment of the present invention determines the damaged feelings of impervious barrier by magnetic field data
Condition not will receive the influence of impervious barrier insulating effect, in the system with multilayer impervious barrier, can detecte middle lower layer's impervious barrier
Breakage.
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 system for carrying out impervious barrier detection using 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；
First magnetic signal acquisition device, is set to designated position, for acquiring the magnetic field data of the designated position；
Second magnetic signal acquisition device, for acquiring the magnetic field data of the detected impervious barrier institute overlay area；
Processor, for the first magnetic signal acquisition device and the collected magnetic field of the second magnetic signal acquisition device
Data are handled, 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 first magnetic signal acquisition device includes:
First sensor, for incuding the magnetic field data of the designated position；
First data collecting instrument is connect with the first sensor, the magnetic field number sensed for acquiring the first sensor
According to.
4. system according to claim 1, which is characterized in that the second magnetic signal acquisition device includes:
Second sensor, for incuding the magnetic field data of the detected impervious barrier institute overlay area；
Second data collecting instrument is connect with the second sensor, the magnetic field number sensed for acquiring the second sensor
According to.
5. system according to claim 4, which is characterized in that
The second sensor is single-sensor；Alternatively,
The second sensor is sensor array, and the sensor array is in the detected impervious barrier institute overlay area
Grid type distribution.
6. system according to claim 1, which is characterized in that the processor is specifically used for adopting first magnetic signal
Acquisition means and the collected magnetic field data of the second magnetic signal acquisition device carry out difference processing.
7. system according to claim 1, which is characterized in that the first magnetic signal acquisition device and second magnetic
The collected magnetic field data of signal pickup assembly includes at least one of magnetic flux, magnetic induction intensity, magnetic density.
8. a kind of method for carrying out impervious barrier detection using magnetic field, which is characterized in that be suitable for described in any one of claim 1-7
System, which comprises
Signal source provides the first electric signal for transmitting terminal, and provides the second electric signal for receiving terminal；
First time magnetic signal acquisition device acquires the magnetic field data of designated position, and the acquisition of the second magnetic signal acquisition device is tested
Survey the magnetic field data of impervious barrier institute overlay area；
Processor is carried out in the collected magnetic field data in the designated position and the detected impervious barrier institute overlay area
Processing；
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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