CN106353825B - A kind of underground metal pipes detection system - Google Patents
A kind of underground metal pipes detection system Download PDFInfo
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- CN106353825B CN106353825B CN201610960963.5A CN201610960963A CN106353825B CN 106353825 B CN106353825 B CN 106353825B CN 201610960963 A CN201610960963 A CN 201610960963A CN 106353825 B CN106353825 B CN 106353825B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/083—Controlled source electromagnetic [CSEM] surveying
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/083—Controlled source electromagnetic [CSEM] surveying
- G01V2003/084—Sources
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/083—Controlled source electromagnetic [CSEM] surveying
- G01V2003/085—Receivers
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of underground metal pipes detection system, including High-voltage Signal Generator, signal receiver and master controller, High-voltage Signal Generator includes the booster circuit being sequentially connected, negative high-voltage generator, combined capacitor and discharge switch, the input termination input voltage of booster circuit, the output end of discharge switch is connected through cable with underground metal pipes, booster circuit, combined capacitor and discharge switch are connected with master controller respectively, signal receiver includes some probes, MUX and signal conditioning circuit, all probes insert earth's surface, the output end of each probe is connected with certain road input of MUX respectively, the output end of MUX is connected through signal conditioning circuit with master controller.Underground is set to form electric potential field by High-voltage Signal Generator, signal receiver measures the electric field equipotential distribution situation, obtains metal pipe line position.Instant invention overcomes the defect such as existing electromagnetic propagation method reliability is poor, investigation depth is limited, precision is low.
Description
Technical field
Type of the present invention belongs to subsurface investigation technical field, more particularly to a kind of underground metal pipes detection system.
Background technology
Underground metal pipes detection is widely used in urban infrastructure construction and chemical engineering industry construction, understands buried pipe
The distribution situation of line is the necessary preparation before city, the important step of plant location programming and construction.In recent years, underground utilities are damaged
Accident continuously emerges.
Existing underground piping detection mode mainly uses electromagnetic propagation method, around the metallic conduit of laying and its
Medium physical difference in electromagnetic property be present, this method passes through emitter using underground piping as signal transmitting antenna
Specific electromagnetic wave signal is sent to underground piping, the underground piping as antenna forms electromagnetic wave and passes through earth's surface, in pipeline just
The electromagnetic wave signal of top is most strong, and with the increase of monitoring point and pipeline distance, signal gradually weakens.This survey meter can be compared with
Underground utilities distribution situation is obtained to be effective, but shortcoming is as follows：
1st, radio modem technology is needed to use, emitter, receiver complex designing, cost is high, and reliability is relative
It is poor；
2nd, electromagnetic wave penetration capacity is limited, and common moist earth's surface is stronger to the absorbability of radio wave energy, can visit
Depth measurement degree is limited；
3rd, complex operation, special training is needed before detection, the quality and skill requirement to operator are very high；
4th, electromagnetic wave radiant intensity is influenced by many factors, causes detection accuracy relatively low.
The content of the invention
In order to solve the technical problem that above-mentioned background technology proposes, the present invention is intended to provide a kind of underground metal pipes detect
System, system complex when overcoming existing electromagnetic propagation method Underground pipeline, reliability is poor, investigation depth is limited and visits
Survey the defects such as precision is low.
In order to realize above-mentioned technical purpose, the technical scheme is that：
A kind of underground metal pipes detection system, including High-voltage Signal Generator, signal receiver and master controller, it is described
High-voltage Signal Generator includes booster circuit, negative high-voltage generator, combined capacitor and the discharge switch being sequentially connected, the liter
The input termination input voltage of volt circuit, the output end of discharge switch are connected through cable with underground metal pipes, booster circuit, group
Capacitor and discharge switch is closed respectively with master controller to be connected, the signal receiver include some probes, MUX and
Signal conditioning circuit, all probes are inserted into earth's surface, the output end of each probe certain road input with MUX respectively
It is connected, the output end of MUX is connected through signal conditioning circuit with master controller；High pressure generator is to underground metal pipes
Conveying high-pressure electricity, so as to form electric potential field in underground, between each probe of MUX scan round and underground metal pipes
Electrical potential difference, and send master controller after the filtering process for passing through signal conditioning circuit to, master controller is according to the signal received
Result of detection is obtained, and adjusts the working condition of booster circuit, combined capacitor and discharge switch.
Preferred scheme based on above-mentioned technical proposal, the length of all probes is identical, the depth of all probe insertion earth's surfaces
It is identical, and the spacing between probe and probe is equal.
Preferred scheme based on above-mentioned technical proposal, the depth of all probe insertion earth's surfaces is 20-30 centimetres.
Preferred scheme based on above-mentioned technical proposal, spacing between probe and probe for prediction underground metal pipes institute
2-3 times of buried depth degree.
Preferred scheme based on above-mentioned technical proposal, the MUX and signal conditioning circuit are placed in shell, should
The material of shell is using ceramics or plastics, and the tip of probe uses conducting metal.
Preferred scheme based on above-mentioned technical proposal, the booster circuit include self coupling adjuster and multi gear transformer, from
The input termination input voltage of coupling adjuster, the input of the output end connection multi gear transformer of self coupling adjuster, multi gear transformation
The output end connection negative high-voltage generator of device.
Preferred scheme based on above-mentioned technical proposal, the High-voltage Signal Generator also include earthing detection unit and input
Switch, the both ends of the input switch connect input voltage and booster circuit, the control terminal connection earthing detection of input switch respectively
Unit, when earthing detection unit detects that earth fault occurs for High-voltage Signal Generator, input switch disconnects.
Preferred scheme based on above-mentioned technical proposal, the combined capacitor include some electric capacity, led between these electric capacity
Cross some switches and realize serial or parallel connection, these are switched on-off by main controller controls.
Preferred scheme based on above-mentioned technical proposal, the master controller use C8051F347 chips.
The beneficial effect brought using above-mentioned technical proposal：
The present invention is powered by High-voltage Signal Generator to underground metal pipes, using underground piping as high-field electrode, is made
Electrical potential difference is formed between pipeline and the earth, the electric field equipotential distribution situation is measured by signal receiver, and accordingly
Metal pipe line is in the position of underground where calculating.
Advantages of the present invention is as follows：
1st, the present invention need not use radio modem technology, and system architecture is simple, and cost is low, and reliability is high；
2nd, the present invention conveniently adjusted investigation depth, is supported to depth by controlling High-voltage Signal Generator to improve electrical potential difference
The detection of buried pipeline；
3rd, the present invention is simple to operate, special training is not needed before detection, the quality and skill requirement to operator are relatively
It is low.
Brief description of the drawings
Fig. 1 is the overall schematic of the present invention；
Fig. 2 is the schematic diagram of signal receiver in the present invention；
Fig. 3 is the schematic diagram of mesohigh signal generator of the present invention.
Embodiment
Below with reference to accompanying drawing, technical scheme is described in detail.
As shown in figure 1, a kind of underground metal pipes detection system, including High-voltage Signal Generator, signal receiver and master
Controller, by High-voltage Signal Generator to underground metal pipes power, using underground piping be used as high-field electrode, make pipeline with greatly
Electrical potential difference is formed between ground, the electric field equipotential distribution situation is measured by signal receiver, and calculate institute accordingly
In metal pipe line in the position of underground.
As shown in Fig. 2 signal receiver includes some probes, MUX and signal conditioning circuit, by all probes
Earth's surface is inserted, the output end of each probe is connected with certain road input of MUX respectively, the output end of MUX
It is connected through signal conditioning circuit with master controller.
The length of all probes is identical, and the depth for inserting earth's surface is identical, and depth is typically between 20-30 centimetres, especially
Dry soil should moderately increase depth of probe.Standoff distance should be equal between each probe, and distance is with burying pipe between probe
The predetermined depth in road is deepened and increased, and probe spacing should be 2-3 times of the pipe laying depth of prediction.By accessing high voltage electric field,
Electric field, the electrical potential difference (U1 between each probe of MUX scan round and pipeline are produced between pipeline and probe>U2>
U3>U4), realize that signal filters by signal conditioning circuit, the characteristic signal in collection information is amplified, while suppress other letters
Interference number to useful signal, master controller calculate probe and pipeline according to the difference of electrical conductivity between pipeline and different probe
The distance between.The relation of electrical potential difference, electrical conductivity and pipeline distance isPotentials of the wherein U between probe and pipeline
Difference, d are the distance between probe and pipeline, and e is the specific conductance of pipeline soil, and adjustment factor α can be according to soil moisture
Degree and amount of ions, rule of thumb selected in certain scope, as between 0.03-0.77.Probe directly over pipeline
(i.e. with pipeline distance most short probe) and the electrical potential difference of pipeline are minimum, with the increase of monitoring point and pipeline distance, potential by
It is cumulative big.
In the present embodiment, MUX and signal conditioning circuit are placed in shell, and the material of the shell is using high electricity
Material, such as ceramics or plastics are hindered, and the tip of probe uses conducting metal.
As shown in figure 3, High-voltage Signal Generator includes booster circuit, negative high-voltage generator, the combination capacitor being sequentially connected
Device and discharge switch, the input termination input voltage of the booster circuit, the output end of discharge switch is through cable and underground metalliferous
Pipeline is connected, and booster circuit, combined capacitor and discharge switch are connected with master controller respectively.
In the present embodiment, booster circuit includes self coupling adjuster and multi gear transformer, the input termination of self coupling adjuster
Input voltage, the input of the output end connection multi gear transformer of self coupling adjuster, the negative height of output end connection of multi gear transformer
Press generator.
In the present embodiment, High-voltage Signal Generator also includes earthing detection unit and input switch, the input switch
Both ends connect input voltage and booster circuit respectively, the control terminal connection earthing detection unit of input switch, when earthing detection list
When member detects that earth fault occurs for High-voltage Signal Generator, input switch disconnects.
In the present embodiment, combined capacitor includes some electric capacity, is realized and connected by some switches between these electric capacity
Or it is in parallel, these are switched on-off by main controller controls.
When master controller detects the weak output signal or shakiness of signal receiver collection, it is difficult to when being positioned, main control
Device control multi gear transformer boost gear, the capacity of combined capacitor and the clearance state of discharge switch, so that high pressure is believed
Number generator produces specific amplitude and the output signal of waveform, is advantageous to accurately detecting metallic conduit.
The technological thought of above example only to illustrate the invention, it is impossible to protection scope of the present invention is limited with this, it is every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, the scope of the present invention is each fallen within
Within.
Claims (6)
- A kind of 1. underground metal pipes detection system, it is characterised in that：Including High-voltage Signal Generator, signal receiver and master control Device processed, booster circuit, negative high-voltage generator, combined capacitor and the electric discharge that the High-voltage Signal Generator includes being sequentially connected are opened Close, the input termination input voltage of the booster circuit, the output end of discharge switch is connected with underground metal pipes through cable, risen Volt circuit, combined capacitor and discharge switch are connected with master controller respectively, and the signal receiver includes some probes, multichannel Selector and signal conditioning circuit, all probes are inserted into earth's surface, the output end of each probe respectively with MUX certain Road input is connected, and the output end of MUX is connected through signal conditioning circuit with master controller；High pressure generator is to underground Metallic conduit conveying high-pressure electricity, so as to form electric potential field, each probe of MUX scan round and underground metalliferous pipe in underground Electrical potential difference between road, and send master controller to after the filtering process for passing through signal conditioning circuit, master controller is according to reception To signal obtain result of detection, and adjust the working condition of booster circuit, combined capacitor and discharge switch；All probes are inserted It is identical to enter the depth of earth's surface, the depth is 20-30 centimetres；Spacing between probe and probe is equal, and the spacing is the ground of prediction 2-3 times of lower metallic conduit institute buried depth degree.
- A kind of 2. underground metal pipes detection system according to claim 1, it is characterised in that：The MUX and letter Number modulate circuit is placed in shell, and the material of the shell is using ceramics or plastics, and the tip of probe uses conducting metal.
- A kind of 3. underground metal pipes detection system according to claim 1, it is characterised in that：The booster circuit is included certainly Coupling adjuster and multi gear transformer, the input termination input voltage of self coupling adjuster, the output end connection multi gear of self coupling adjuster The input of transformer, the output end connection negative high-voltage generator of multi gear transformer.
- A kind of 4. underground metal pipes detection system according to claim 1, it is characterised in that：The High-voltage Signal Generator Also include earthing detection unit and input switch, the both ends of the input switch connect input voltage and booster circuit respectively, input The control terminal connection earthing detection unit of switch, when earthing detection unit detects that earth fault occurs for High-voltage Signal Generator When, input switch disconnects.
- A kind of 5. underground metal pipes detection system according to claim 1, it is characterised in that：The combined capacitor includes Some electric capacity, serial or parallel connection are realized by some switches between these electric capacity, these are switched on-off by main controller controls.
- A kind of 6. underground metal pipes detection system according to claim 1, it is characterised in that：The master controller uses C8051F347 chips.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610960963.5A CN106353825B (en) | 2016-10-28 | 2016-10-28 | A kind of underground metal pipes detection system |
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| CN201610960963.5A CN106353825B (en) | 2016-10-28 | 2016-10-28 | A kind of underground metal pipes detection system |
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| CN106353825A CN106353825A (en) | 2017-01-25 |
| CN106353825B true CN106353825B (en) | 2018-04-03 |
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| CN201610960963.5A Active CN106353825B (en) | 2016-10-28 | 2016-10-28 | A kind of underground metal pipes detection system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107388045A (en) * | 2017-08-23 | 2017-11-24 | 上海山南勘测设计有限公司 | A kind of device and detection method for underground heat hydraulic piping detection |
Citations (5)
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|---|---|---|---|---|
| US5151657A (en) * | 1989-05-24 | 1992-09-29 | Tashjian Michael D | Underground pipe locating apparatus |
| WO1999000679A1 (en) * | 1997-06-26 | 1999-01-07 | Radiodetection Limited | Detecting underground pipes |
| CN2362135Y (en) * | 1998-12-30 | 2000-02-02 | 蒋志国 | Buried cable detector |
| CN103941095A (en) * | 2014-05-13 | 2014-07-23 | 尚兵 | Method for testing electrical resistivity of earth around underground metallic conduit |
| CN206114924U (en) * | 2016-10-28 | 2017-04-19 | 南京信息工程大学 | Underground metal pipeline detection system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2278358A1 (en) * | 2009-07-22 | 2011-01-26 | Leica Geosystems AG | Method and system for detecting the proximity of a conductive, buried structure |
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2016
- 2016-10-28 CN CN201610960963.5A patent/CN106353825B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5151657A (en) * | 1989-05-24 | 1992-09-29 | Tashjian Michael D | Underground pipe locating apparatus |
| WO1999000679A1 (en) * | 1997-06-26 | 1999-01-07 | Radiodetection Limited | Detecting underground pipes |
| CN2362135Y (en) * | 1998-12-30 | 2000-02-02 | 蒋志国 | Buried cable detector |
| CN103941095A (en) * | 2014-05-13 | 2014-07-23 | 尚兵 | Method for testing electrical resistivity of earth around underground metallic conduit |
| CN206114924U (en) * | 2016-10-28 | 2017-04-19 | 南京信息工程大学 | Underground metal pipeline detection system |
Non-Patent Citations (3)
| Title |
|---|
| 地下金属管道深度和位置探测新方法;靳世久 等;《天津大学学报》;19931231(第5期);第71-75页 * |
| 探地雷达技术在地下管道探测中的应用;刘敦文 等;《湘潭矿业学院学报》;20010630;第16卷(第2期);第75-77页 * |
| 电磁法探测复杂区域地下管道的仿真研究;闫向军 等;《石油机械》;20121231;第40卷(第1期);第13-16、25页 * |
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Address after: Room 420, block C, Kechuang headquarters building, 320 pubin Road, Jiangpu street, Pukou District, Nanjing City, Jiangsu Province, 211800 Patentee after: NANJING University OF INFORMATION SCIENCE & TECHNOLOGY Address before: 210044, No. 219, Ning six road, Pukou District, Jiangsu, Nanjing Patentee before: NANJING University OF INFORMATION SCIENCE & TECHNOLOGY |
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