CN107656270A - The measurement apparatus and measuring method of a kind of contactless buried pipe track forces cun - Google Patents
The measurement apparatus and measuring method of a kind of contactless buried pipe track forces cun Download PDFInfo
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- CN107656270A CN107656270A CN201710844615.6A CN201710844615A CN107656270A CN 107656270 A CN107656270 A CN 107656270A CN 201710844615 A CN201710844615 A CN 201710844615A CN 107656270 A CN107656270 A CN 107656270A
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- electromagnetic wave
- antenna
- contactless
- cun
- hyperbola
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/887—Radar or analogous systems specially adapted for specific applications for detection of concealed objects, e.g. contraband or weapons
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The measurement apparatus and measuring method of a kind of disclosure of the invention contactless buried pipe track forces cun, including electromagnetic wave saturating ground equipment, signal preprocessing device is connected with electromagnetic wave saturating ground equipment, buried depth locator is connected with signal preprocessing device, line size measuring appliance is connected with buried depth locator, imaging processor is connected with signal preprocessing device, buried depth locator and line size measuring appliance respectively, and aobvious control instrument is connected with imaging processor；The present invention solves the position that current ground penetrating radar detection technology can only position underground piping, the problem of being unable to accurate measurement underground piping size, the present invention can realize lossless non-contact measurement, to underground surrounding medium and underground piping without destruction, also the dimension information of different depth underground piping can under the antenna of different frequency, be detected.
Description
Technical field
Patent of the present invention is related to a kind of contactless lossless detection method, more particularly to a kind of contactless buried pipe track forces
Very little measurement apparatus and measuring method.
Background technology
Underground Electromagnetic Waves Detection Techniques are a kind of lossless detection systems, and mainly using electromagnetic wave, electromagnetic property is not in medium
The detection to underground objective body is realized in reflection and scattering caused by continuous place；But at present existing Underground pipeline device and
Measuring method can only position the target locations such as underground cavity, pipeline cavities, it is impossible to obtain detecting the dimension information of target, it is local
When lower pipeline has some defects, existing detection device and measuring method method can only do qualitative analysis to defect, can not visit
The dimension information for measuring underground piping quantitatively estimates the order of severity of defect, therefore accurately can not in depth assess and monitor ground
The quality condition of lower pipeline, defect processing material requested dosage can not be carried out effectively to assess calculating, for because of underground piping
Serious consequence caused by defect is possible, can not take pin effective measures to be remedied in advance.
The content of the invention
The technical problem to be solved in the present invention：Measurement apparatus and the measurement side of a kind of contactless buried pipe track forces cun are provided
Method, to solve the position that current underground piping measurement apparatus and measuring method can only position underground piping, it is impossible to accurate measurement
The problem of lower line size.
The technical scheme is that：A kind of measurement apparatus of contactless buried pipe track forces cun, including electromagnetic wave is thoroughly
Equipment, signal preprocessing device are connected with electromagnetic wave saturating ground equipment, and buried depth locator is connected with signal preprocessing device,
Line size measuring appliance is connected with buried depth locator, imaging processor respectively with signal preprocessing device, buried depth locator
And line size measuring appliance is connected, aobvious control instrument is connected with imaging processor.
Described electromagnetic wave saturating ground equipment includes electromagnetic wave saturating ground main frame, antenna emitter and antenna receiver, electromagnetic wave
Saturating ground main frame is connected with antenna emitter and antenna receiver, and distance is fixed between antenna emitter and antenna receiver.
A kind of measurement apparatus of contactless buried pipe track forces cun, measuring method comprise the following steps：
Step 1：The equipment transmitting of electromagnetic wave saturating ground and the unknown pipeline of reception antenna Underground；
Step 2：The hyperbola echo-signal of electromagnetic wave saturating ground equipment is pre-processed and feature extraction；
Step 3：Calculate hyperbola asymptote intersection point；
Step 4：Calculate the radius of underground piping.
The hyperbola echo-signal to electromagnetic wave saturating ground equipment (1) described in step 2 is pre-processed and feature extraction,
Comprise the following steps：
Step 2.1 is filtered noise reduction to echo-signal；
Step 2.2 calculates the apex coordinate for being concerned about area's curve；
The weighted calculation of step 2.3 hyperbola velocity of wave.
Calculating hyperbola asymptote intersection point described in step 3, calculating formula are：
WhereinD=x0, t0For when GPR underground piping just on
Time of the square electromagnetic wave from transmitting antenna to reception antenna, x0For horizontal coordinate position；T is when GPR is not in underground piping
Time of the electromagnetic wave from transmitting antenna to reception antenna during surface, x are horizontal coordinate position；R is the radius of underground piping.
The weighted calculation of hyperbola velocity of wave described in step 4, calculating formula are：R is the radius of underground piping in formula,
V is velocity of wave, and c is hyperbola asymptote intersection point vertical coordinate value.
Beneficial effects of the present invention：
The measurement apparatus and measuring method of a kind of contactless buried pipe track forces cun of the present invention, realizing to position
The positional information of underground piping, while energy accurate measurement underground piping size, meanwhile, the present invention can realize lossless contactless survey
Amount, to underground surrounding medium and underground piping without destruction, also it can detect different depth underground piping under the antenna of different frequency
Dimension information, when underground piping has some defects, the order of severity that dimension information quantitatively estimates defect can be detected,
It accurately in depth can assess and monitor the quality condition of underground piping.
Brief description of the drawings：
Fig. 1 is apparatus of the present invention structured flowchart；
Fig. 2 is electromagnetic wave saturating ground device structure block diagram；
Fig. 3 is the measuring method flow chart of the present invention；
Fig. 4 is the experimental model schematic diagram of the present invention；
Identified in figure：1st, electromagnetic wave saturating ground equipment, 2, signal preprocessing device, 3, buried depth locator, 4, line size
Measuring appliance, 5, imaging processor, 6, aobvious control instrument, 7, electromagnetic wave saturating ground main frame, 8, antenna emitter, 9, antenna receiver.
Embodiment：
A kind of measurement apparatus of contactless buried pipe track forces cun includes, electromagnetic wave saturating ground equipment 1, signal preprocessing
Device 2 is connected with electromagnetic wave saturating ground equipment 1, and buried depth locator 3 is connected with signal preprocessing device 2, line size measuring appliance
4 are connected with buried depth locator phase 3, imaging processor 5 respectively with signal preprocessing device 2, buried depth locator 3 and line size
Measuring appliance 4 is connected, and aobvious control instrument 6 is connected with imaging processor 5.
The operation principle of electromagnetic wave saturating ground equipment 1 is to be based on electromagnetic wave saturating ground technical principle：From transmitting antenna to underground piping
Field emission electromagnetic wave, and the echo-signal returned by reception antenna acquisition buried target body reflection electromagnetic wave；
The echo-signal of acquisition is carried out the pretreatment such as mean filter by signal preprocessing device 2, to improve echo-signal
Signal to noise ratio；
Pretreated hyperbola echo-signal is identified buried depth locator 3 and feature extraction, so as to obtain underground
The buried depth position of pipeline, electromagnetic wave are in the velocity of wave of underground medium and the relative dielectric constant of underground medium；
Line size measuring appliance 4 is according to the intersection point of two asymptotes of hyperbola of extraction, so as to obtain buried pipe track forces
Very little information；
Imaging processor 5 combines buried depth coordinate information and dimension information, generates three dimensional space coordinate information；
Aobvious control instrument 6 exports the three dimensional space coordinate of underground piping into image.
Described electromagnetic wave saturating ground equipment 1 includes electromagnetic wave saturating ground main frame 7, antenna emitter 8 and antenna receiver 9, electricity
Magnetic wave saturating ground main frame 7 is connected with antenna emitter 8 and antenna receiver 9, for launching and receiving electromagnetic wave signal, antenna transmitting
Distance is fixed between device 8 and antenna receiver 9：
For electromagnetic wave saturating ground equipment 1 in Underground objective body, antenna emitter 8 and antenna receiver 9 are with constant spacing
Moved along survey line, horizontal direction serial section information, the signal that electromagnetic echoes signal receives according to antenna receiver 9 can be obtained
Generate B-SCAN figures, the displacement of image abscissa record reception antenna in the horizontal direction, ordinate record echo reflection time, root
The target depth of burying or interface are estimated according to electromagnetic wave propagation speed vertical component in echo reflection time and measured medium
Position, therefore the position of the section with reference to where abscissa information can substantially determine target in survey line.
A kind of measurement apparatus of contactless buried pipe track forces cun, its measuring method comprise the following steps：
Step 1：Electromagnetic wave saturating ground equipment 1 is launched and the unknown pipeline of reception antenna Underground；Using electromagnetic wave in medium
Discontinuously the detection to underground objective body is realized in reflection and scattering to middle electromagnetic property caused by place, definitely descends the position of objective body
Put.
Step 2：The hyperbola echo-signal of electromagnetic wave saturating ground equipment 1 is pre-processed and feature extraction；Obtain double
Hump coordinate (x0,t0), and obtain value of wave speed (v)；
Step 3：Calculate hyperbola asymptote intersection point：
When electromagnetic wave saturating ground equipment 1 is directly over underground piping, electromagnetic wave is transmitted into the time of reception antenna from antenna
For t0, horizontal level x0；And when electromagnetic wave saturating ground equipment 1 is not directly over underground piping, electromagnetic wave is from transmitting antenna to connecing
The time for receiving antenna is t, and horizontal level x, the radius of pipeline is R, is then had according to trigonometric function relation：(x-x0) × 2=
(vt/2+R)×2-(vt0/ 2+R) × 2, wherein v is spread speed of the electromagnetic wave in underground medium, by fortran, on
Formula can be exchanged into hyperbola formula：
WhereinD=x0。
Obtain hyperbola asymptote intersection point：(d, c).
Step 4：Calculate the radius of underground piping：
According to calculating formulaRelation, it is derived byIt is hyperbolic that underground piping radius R, i.e. R, which can be calculated,
V/2 times of line asymptote intersection point vertical coordinate, R is the radius of underground piping in formula, and v is velocity of wave, and c is the friendship of hyperbola asymptote
Point vertical coordinate value.
The hyperbola echo-signal to electromagnetic wave saturating ground equipment (1) described in step 2 is pre-processed and feature extraction,
Comprise the following steps：
Step 2.1 is filtered noise reduction to echo-signal, filters the interference signal in echo-signal；
Step 2.2 calculates the apex coordinate for being concerned about area's curve；
The weighted calculation of step 2.3 hyperbola velocity of wave.
Claims (6)
1. a kind of measurement apparatus of contactless buried pipe track forces cun, including electromagnetic wave saturating ground equipment (1), it is characterised in that：Return
Ripple signal preprocessor (2) is connected with electromagnetic wave saturating ground equipment (1), buried depth locator (3) and signal preprocessing device (2)
Be connected, line size measuring appliance (4) is connected with buried depth locator phase (3), imaging processor (5) respectively with signal preprocessing
Device (2), buried depth locator (3) and line size measuring appliance (4) are connected, and aobvious control instrument (6) is connected with imaging processor (5).
A kind of 2. measurement apparatus of contactless buried pipe track forces according to claim 1 cun, it is characterised in that：Described
Electromagnetic wave saturating ground equipment (1) includes electromagnetic wave saturating ground main frame (7), antenna emitter (8) and antenna receiver (9), and electromagnetic wave is saturating
Ground main frame (7) is connected with antenna emitter (8) and antenna receiver (9), between antenna emitter (8) and antenna receiver (9)
Distance is fixed.
A kind of 3. measurement apparatus of contactless buried pipe track forces according to claim 1 cun, it is characterised in that：Measurement side
Method comprises the following steps：
Step 1：Electromagnetic wave saturating ground equipment (1) is launched and the unknown pipeline of reception antenna Underground；
Step 2：The hyperbola echo-signal of electromagnetic wave saturating ground equipment (1) is pre-processed and feature extraction；
Step 3：Calculate hyperbola asymptote intersection point；
Step 4：Calculate the radius of underground piping.
A kind of 4. measurement apparatus of contactless buried pipe track forces cun according to claim 1,2 or 3, it is characterised in that：
The hyperbola echo-signal to electromagnetic wave saturating ground equipment (1) described in step 2 is pre-processed and feature extraction, including following
Step：
Step 2.1 is filtered noise reduction to echo-signal；
Step 2.2 calculates the apex coordinate for being concerned about area's curve；
The weighted calculation of step 2.3 hyperbola velocity of wave.
A kind of 5. measurement apparatus of contactless buried pipe track forces cun according to claim 1,2 or 3, it is characterised in that：
Calculating hyperbola asymptote intersection point described in step 3, calculating formula are：
<mrow>
<mfrac>
<msup>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>-</mo>
<mi>c</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>a</mi>
<mn>2</mn>
</msup>
</mfrac>
<mo>-</mo>
<mfrac>
<msup>
<mrow>
<mo>(</mo>
<mi>x</mi>
<mo>-</mo>
<mi>d</mi>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<msup>
<mi>b</mi>
<mn>2</mn>
</msup>
</mfrac>
<mo>=</mo>
<mn>1</mn>
</mrow>
WhereinD=x0, t0For when GPR directly over underground piping it is electric
Time of the magnetic wave from transmitting antenna to reception antenna, x0For horizontal coordinate position；T be when GPR not underground piping just on
Time of the electromagnetic wave from transmitting antenna to reception antenna when square, x are horizontal coordinate position；R is the radius of underground piping.
A kind of 6. measurement apparatus of contactless buried pipe track forces cun according to claim 1,2 or 3, it is characterised in that：
The weighted calculation of hyperbola velocity of wave described in step 4, calculating formula are：R is the radius of underground piping in formula, and v is velocity of wave,
C is hyperbola asymptote intersection point vertical coordinate value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844615.6A CN107656270A (en) | 2017-09-19 | 2017-09-19 | The measurement apparatus and measuring method of a kind of contactless buried pipe track forces cun |
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| CN201710844615.6A CN107656270A (en) | 2017-09-19 | 2017-09-19 | The measurement apparatus and measuring method of a kind of contactless buried pipe track forces cun |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677197A (en) * | 2017-09-19 | 2018-02-09 | 贵州电网有限责任公司 | A kind of volume measurement device and measuring method of buried target body |
| CN108303745A (en) * | 2018-03-19 | 2018-07-20 | 贵州电网有限责任公司 | A kind of inversion method of the buried cable detection based on electromagnetic wave saturating ground technology |
| CN111323774A (en) * | 2020-03-30 | 2020-06-23 | 华南农业大学 | Method for extracting hyperbolic signal from ground penetrating radar map by adopting geometric cylindrical detection model |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677197A (en) * | 2017-09-19 | 2018-02-09 | 贵州电网有限责任公司 | A kind of volume measurement device and measuring method of buried target body |
| CN108303745A (en) * | 2018-03-19 | 2018-07-20 | 贵州电网有限责任公司 | A kind of inversion method of the buried cable detection based on electromagnetic wave saturating ground technology |
| CN111323774A (en) * | 2020-03-30 | 2020-06-23 | 华南农业大学 | Method for extracting hyperbolic signal from ground penetrating radar map by adopting geometric cylindrical detection model |
| CN111323774B (en) * | 2020-03-30 | 2022-06-14 | 华南农业大学 | Method for extracting hyperbolic signal from ground penetrating radar map by adopting geometric cylindrical detection model |
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