CN104712910A - Underground net pipeline test method based on big dipper positioning - Google Patents
Underground net pipeline test method based on big dipper positioning Download PDFInfo
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- CN104712910A CN104712910A CN201510154767.4A CN201510154767A CN104712910A CN 104712910 A CN104712910 A CN 104712910A CN 201510154767 A CN201510154767 A CN 201510154767A CN 104712910 A CN104712910 A CN 104712910A
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Abstract
The invention relates to the technical field of underground pipeline measurement, and discloses an underground net pipeline test system based on big dipper positioning. The method comprises the steps that N annular strain films are uniformly arranged on the outer surface of a pipeline in a pasted manner, wherein N is greater than or equal to 2; a waterproof film is arranged on the outer surface of each annular strain film; insulation films are arranged between every two adjacent annular strain films in a pasted manner; every n annular strain films are mutually connected in series or in parallel by lead wires to form a strain film group; n sets of rectifying circuits, filter circuits, A/D conversion circuits, master control circuits and big dipper positioning modules are connected sequentially to form operational circuits; each strain film group is connected with operational circuit; and all the operational circuits are in communication with a backend database and a monitoring center by a wireless communication network, and n is greater than or equal to 1 and less than or equal to N. According to the system, an equivalent circuit is designed, and the position of a fault point is detected accordingly.
Description
Technical field
The present invention relates to underground pipeline survey technical field, particularly relate to a kind of earth mat test pipeline method based on Big Dipper location.
Background technique
Along with the development of urban construction, scale and the kind of underground utility distribution increase severely day by day.Underground utility comprise cable, heat supply pipeline, water supply line, gas pipeline etc., because it is embedded in underground, even if once break etc. and cannot locate at once, make troubles to the maintenance of administrative staff.More or even after cannot locating at once cause more serious danger, cause the loss of personnel's property.Buried pipe line length occupy dark unglazed underground, mostly according to sensor, the measurement of the leakage scale of construction is responded to even if leakage etc. occurs for it, and be in the consideration of cost, arranging of sensor all keeps at a certain distance away, whole pipeline cannot be spread all over, its induction speed and inductive effects reduce greatly, even and if crack tiny on some pipelines just cannot sense, and need rear just likely the responding to of the situation generations such as leakage, and often tiny crack repairing is easily simple, and once after causing leakage, then probably cause the heavy losses of property, even cause casualties.Therefore, the how accurately small fault position of positioningly underground pipelines, and the feedback that is accurately out of order, even if line losses was just avoided in the flaw stage, minimizing property and personal casualty loss substantially.
Summary of the invention
Solve the problems of the technologies described above, the invention provides a kind of earth mat test pipeline system based on Big Dipper location, coordinating is sticked at the strain film of pipe surface, and design an equivalent circuit, detect strain film to the change of circuitous resistance, thus detect the position of fault point, even if even if the most small loss located exactly, for pipe-line maintenance provides detection and location function the most timely.
Present invention also offers a kind of earth mat test pipeline method based on Big Dipper location, by the strain film that is sticked at pipe surface, and coordinate related circuit to respond to the crack on pipeline and miniature deformation, thus accurate targeted duct surface crack and miniature deformation, there is provided the maximized time to ensure to pipe-line maintenance, and greatly reduce pipe-line maintenance cost.
In order to achieve the above object, the technical solution adopted in the present invention is, a kind of earth mat test pipeline system based on Big Dipper location, comprise the strain film be sticked in pipeline appearance, and be arranged on the waterproofing membrane of strain film appearance, described strain film is N number of ring-type strain film, wherein N >=2, each ring-type strain film is close to and is located at pipeline circumferential hoop outer wall, there is between adjacent two ring-type strain films dielectric film isolation, also comprise rectification circuit, eliminator, A/D change-over circuit, governor circuit and Big Dipper locating module, strain film group is become by wired in series or parallel connection between every n ring-type strain film, wherein 1≤n≤N, strain film group and rectification circuit, eliminator, A/D change-over circuit and governor circuit are electrically connected successively, described Big Dipper locating module and governor circuit are electrically connected, Big Dipper locating module is communicated with background data base and Surveillance center by cordless communication network.
Further, described rectification circuit is bridge rectifier, it is sequentially end-to-end by resistance R1, R2, R3, R4 and forms, wherein the common connection end of resistance R1 and resistance R2 is a end, the common connection end of resistance R1 and resistance R3 is b end, the common connection end of resistance R3 and resistance R2 is c end, and the common connection end of resistance R2 and resistance R4 is d end, and a end is connected ac power supply U with c end
i, b end and d end are voltage output end U
oand be connected with eliminator input end, eliminator output terminal is connected with A/D change-over circuit input end, and A/D change-over circuit output terminal is connected with governor circuit.
Further, also comprise power circuit, described power circuit input end connects ac power supply U
i, described power circuit output DC electrical source is respectively eliminator, A/D change-over circuit and governor circuit and Big Dipper locating module is powered.
Based on an earth mat test pipeline method for Big Dipper location, comprise the following steps:
Evenly to be sticked N number of ring-type strain film in pipeline appearance, wherein N >=2, and to be sticked waterproofing membrane in each ring-type strain film appearance,
And dielectric film isolation is set between adjacent two ring-type strain films,
Strain film group is become by wired in series or parallel connection, wherein 1≤n≤N between every n ring-type strain film,
N rectification circuit, eliminator, A/D change-over circuit, governor circuit and the Big Dipper locating module sequentially connected is set and forms arithmetic circuit,
And each strain film group is connected with each arithmetic circuit, all arithmetic circuits are all communicated with background data base and Surveillance center by cordless communication network.
Further, described rectification circuit is bridge rectifier, it is sequentially end-to-end by resistance R1, R2, R3, R4 and forms, wherein the common connection end of resistance R1 and resistance R2 is a end, the common connection end of resistance R1 and resistance R3 is b end, the common connection end of resistance R3 and resistance R2 is c end, and the common connection end of resistance R2 and resistance R4 is d end, and a end is connected ac power supply U with c end
i, b end and d end are voltage output end U
oand be connected with eliminator input end, eliminator output terminal is connected with A/D change-over circuit input end, and A/D change-over circuit output terminal is connected with governor circuit.
Further, be also provided with power circuit, described power circuit input end connects ac power supply U
i, described power circuit output DC electrical source is respectively eliminator, A/D change-over circuit and governor circuit and Big Dipper locating module is powered.
The present invention is by adopting technique scheme, and compared with prior art, tool has the following advantages:
Earth mat test pipeline system based on Big Dipper location of the present invention, coordinating is sticked at the strain film of pipe surface, and design an equivalent circuit, detect strain film to the change of circuitous resistance, thus detect the position of fault point, even if even if the most small loss is located exactly, for pipe-line maintenance provides detection and location function the most timely.
A kind of earth mat test pipeline method based on Big Dipper location of the present invention, by the strain film that is sticked at pipe surface, and coordinate related circuit to respond to the crack on pipeline and miniature deformation, thus accurate targeted duct surface crack and miniature deformation, there is provided the maximized time to ensure to pipe-line maintenance, and greatly reduce pipe-line maintenance cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiments of the invention 1.
Fig. 2 is the A portion enlarged diagram of Fig. 1.
Fig. 3 is the circuit equivalent schematic diagram of embodiments of the invention 1.
Fig. 4 is the structural representation of embodiments of the invention 2.
Embodiment
Now the present invention is further described with embodiment by reference to the accompanying drawings.
As a specific embodiment, as shown in Figure 1 to Figure 3, a kind of earth mat test pipeline system based on Big Dipper location of the present invention, comprises the strain film be sticked in pipeline 1 appearance, and be arranged on the waterproofing membrane 3 of strain film appearance, described strain film is N number of ring-type strain film 2, and namely waterproofing membrane 3 can be set to N number of, is separately positioned on N number of ring-type strain film 2 surface, also one can be arranged, be coated on all ring-type strain films 2 surface, wherein N >=2, and N is positive integer.Each ring-type strain film 2 is close to and is located at pipeline circumferential hoop outer wall, between adjacent two ring-type strain films 2, there is dielectric film 4 to isolate, also comprise rectification circuit 5, eliminator 6, A/D change-over circuit 7, governor circuit 8 and Big Dipper locating module 9, strain film group B is become by wire 10 series connection between every n ring-type strain film 2, wherein 1≤n≤N, in the present embodiment, n gets 16.Strain film group and rectification circuit 5, eliminator 6, A/D change-over circuit 7 and governor circuit 8 are electrically connected successively, described Big Dipper locating module 9 is electrically connected with governor circuit 8, and Big Dipper locating module 9 is communicated with background data base and Surveillance center by cordless communication network.Described governor circuit 8 comprises dsp chip and auxiliary cicuit thereof.
Shown in concrete reference drawing 3, described rectification circuit 5 is bridge rectifier, it is sequentially end-to-end by resistance R1, R2, R3, R4 and forms, wherein the common connection end of resistance R1 and resistance R2 is a end, the common connection end of resistance R1 and resistance R3 is b end, the common connection end of resistance R3 and resistance R2 is c end, and the common connection end of resistance R2 and resistance R4 is d end, and a end is connected ac power supply U with c end
i, b end and d end are voltage output end U
oand be connected with eliminator input end, eliminator output terminal is connected with A/D change-over circuit 7 input end, and A/D change-over circuit 7 output terminal is connected with governor circuit 8.
Also comprise power circuit 11, described power circuit input end connects ac power supply U
i, described power circuit output DC electrical source is respectively eliminator, A/D change-over circuit 7 and governor circuit 8 and Big Dipper locating module 9 is powered.
The equivalent resistance of strain film group B is Ri, the b end of this equivalent circuit access rectification circuit 5, when there is fracture or miniature deformation in pipeline 1, there is miniature deformation or fracture etc. in corresponding ring-type strain film 2, the equivalent resistance Ri of strain film group B is changed, now this resistance is through rectification circuit 5, eliminator 6, after A/D change-over circuit 7, be sent to governor circuit 8, monitored by corresponding resistance, the equivalent resistance that then can obtain which strain film group B there occurs change, and result of calculation is sent to background data base and Surveillance center's communication by Big Dipper locating module 9, conveniently overhaul location.
In the present embodiment, the structure of described strain film comprises silicon base, described silicon base is formed with raceway groove, described raceway groove is covered with a plurality of piezoresistance, a plurality of piezoresistance is divided into two row's arrangements, and form Wheatstone bridge brachium pontis, described raceway groove seals by described a plurality of piezoresistance, form vacuum channel, the part that described a plurality of piezoresistance corresponds to described vacuum channel is area of stress concentration, described silicon base is also formed with source region, drain region and drift region, described raceway groove is arranged between source region and drift region, and raceway groove and being isolated by protective layer between source region and drift region.
The Making programme of strain film is as follows:
A, form raceway groove on a silicon substrate, and cover a plurality of piezoresistance on this raceway groove,
B, a plurality of piezoresistance are divided into two row's arrangements, and form Wheatstone bridge brachium pontis,
Described raceway groove seals by C, described a plurality of piezoresistance, forms vacuum channel,
The part that D, described a plurality of piezoresistance correspond to described vacuum channel is area of stress concentration,
F, form drain region on a silicon substrate,
G, on a silicon substrate raceway groove both sides formation source region and drift region, and raceway groove and protective layer is set between source region and drift region isolates.
Described strain film is of a size of width: 1-10cm, and the distance between adjacent two strain films is 10-20cm.
The present embodiment additionally provides a kind of earth mat test pipeline method based on Big Dipper location, comprises the following steps:
Evenly to be sticked N number of ring-type strain film 2 in pipeline 1 appearance, wherein N >=2, and to be sticked waterproofing membrane 3 in each ring-type strain film 2 appearance,
And dielectric film 4 is set between adjacent two ring-type strain films 2 isolates,
Strain film group is become by wired in series, wherein 1≤n≤N between every n ring-type strain film 2,
N rectification circuit, eliminator 6, A/D change-over circuit 7, governor circuit 8 and the Big Dipper locating module 9 sequentially connected is set and forms arithmetic circuit,
And each strain film group is connected with each arithmetic circuit, all arithmetic circuits are all communicated with background data base and Surveillance center by cordless communication network.
Described rectification circuit 5 is bridge rectifier 5, it is sequentially end-to-end by resistance R1, R2, R3, R4 and forms, wherein the common connection end of resistance R1 and resistance R2 is a end, the common connection end of resistance R1 and resistance R3 is b end, the common connection end of resistance R3 and resistance R2 is c end, the common connection end of resistance R2 and resistance R4 is d end, and a end is connected ac power supply U with c end
i, b end and d end are voltage output end U
oand be connected with eliminator 6 input end, eliminator 6 output terminal is connected with A/D change-over circuit 7 input end, and A/D change-over circuit 7 output terminal is connected with governor circuit 8.
Also be provided with power circuit, described power circuit input end connects ac power supply U
i, described power circuit output DC electrical source is respectively eliminator 6, A/D change-over circuit 7 and governor circuit 8 and Big Dipper locating module 9 is powered.
The equivalent resistance of strain film group B is Ri, the b end of this equivalent circuit access rectification circuit 5, when there is fracture or miniature deformation in pipeline 1, there is miniature deformation or fracture etc. in corresponding ring-type strain film 2, the equivalent resistance Ri of strain film group B is changed, now this resistance is through rectification circuit 5, eliminator 6, after A/D change-over circuit 7, be sent to governor circuit 8, monitored by corresponding resistance, the equivalent resistance that then can obtain which strain film group B there occurs change, and result of calculation is sent to background data base and Surveillance center's communication by Big Dipper locating module 9, conveniently overhaul location.
In the present embodiment, the structure of described strain film comprises silicon base, described silicon base is formed with raceway groove, described raceway groove is covered with a plurality of piezoresistance, a plurality of piezoresistance is divided into two row's arrangements, and form Wheatstone bridge brachium pontis, described raceway groove seals by described a plurality of piezoresistance, form vacuum channel, the part that described a plurality of piezoresistance corresponds to described vacuum channel is area of stress concentration, described silicon base is also formed with source region, drain region and drift region, described raceway groove is arranged between source region and drift region, and raceway groove and being isolated by protective layer between source region and drift region.
The Making programme of strain film is as follows:
A, form raceway groove on a silicon substrate, and cover a plurality of piezoresistance on this raceway groove,
B, a plurality of piezoresistance are divided into two row's arrangements, and form Wheatstone bridge brachium pontis,
Described raceway groove seals by C, described a plurality of piezoresistance, forms vacuum channel,
The part that D, described a plurality of piezoresistance correspond to described vacuum channel is area of stress concentration,
F, form drain region on a silicon substrate,
G, on a silicon substrate raceway groove both sides formation source region and drift region, and raceway groove and protective layer is set between source region and drift region isolates.
Described strain film is of a size of width: 1-10cm, and the distance between adjacent two strain films is 10-20cm.
Embodiment 2:
Shown in figure 4, the present embodiment is substantially the same manner as Example 1, and difference is to become strain film group B by wire 10 parallel connection between every n ring-type strain film 2.Its equivalent circuit is also consistent with the equivalent circuit of embodiment 1.The equivalent resistance of strain film group B is Ri, the b end of this equivalent circuit access rectification circuit 5, when there is fracture or miniature deformation in pipeline 1, there is miniature deformation or fracture etc. in corresponding ring-type strain film 2, the equivalent resistance Ri of strain film group B is changed, now this resistance is through rectification circuit 5, eliminator 6, after A/D change-over circuit 7, be sent to governor circuit 8, monitored by corresponding resistance, the equivalent resistance that then can obtain which strain film group B there occurs change, and result of calculation is sent to background data base and Surveillance center's communication by Big Dipper locating module 9, conveniently overhaul location.
Although specifically show in conjunction with preferred embodiment and describe the present invention; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (3)
1., based on an earth mat test pipeline method for Big Dipper location, it is characterized in that: comprise the following steps:
Evenly to be sticked N number of ring-type strain film in pipeline appearance, wherein N >=2, and to be sticked waterproofing membrane in each ring-type strain film appearance,
And dielectric film isolation is set between adjacent two ring-type strain films,
Strain film group is become by wired in series or parallel connection, wherein 1≤n≤N between every n ring-type strain film,
N rectification circuit, eliminator, A/D change-over circuit, governor circuit and the Big Dipper locating module sequentially connected is set and forms arithmetic circuit,
And each strain film group is connected with each arithmetic circuit, all arithmetic circuits are all communicated with background data base and Surveillance center by cordless communication network.
2. a kind of earth mat test pipeline method based on Big Dipper location according to claim 1, it is characterized in that: described rectification circuit is bridge rectifier, it is sequentially end-to-end by resistance R1, R2, R3, R4 and forms, wherein the common connection end of resistance R1 and resistance R2 is a end, the common connection end of resistance R1 and resistance R3 is b end, the common connection end of resistance R3 and resistance R2 is c end, and the common connection end of resistance R2 and resistance R4 is d end, and a end is connected ac power supply U with c end
i, b end and d end are voltage output end U
oand be connected with eliminator input end, eliminator output terminal is connected with A/D change-over circuit input end, and A/D change-over circuit output terminal is connected with governor circuit.
3. a kind of earth mat test pipeline method based on Big Dipper location according to claim 2, it is characterized in that: be also provided with power circuit, described power circuit input end connects ac power supply U
i, described power circuit output DC electrical source is respectively eliminator, A/D change-over circuit and governor circuit and Big Dipper locating module is powered.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510154767.4A CN104712910A (en) | 2015-04-03 | 2015-04-03 | Underground net pipeline test method based on big dipper positioning |
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| CN201510154767.4A CN104712910A (en) | 2015-04-03 | 2015-04-03 | Underground net pipeline test method based on big dipper positioning |
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| CN104214521A (en) * | 2014-08-27 | 2014-12-17 | 上海云逸能源系统有限公司 | Novel pipeline and fluid conveying pipeline for seabed |
| CN204042452U (en) * | 2014-05-07 | 2014-12-24 | 中联重科股份有限公司 | The blocking of pump truck conveyance conduit surveillance equipment, alarm system and engineering machinery |
| CN104344218A (en) * | 2013-07-31 | 2015-02-11 | 无锡慧思顿科技有限公司 | Intelligent delivery pipeline with multiple integrated sensors and monitoring system |
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2015
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201561826U (en) * | 2009-10-30 | 2010-08-25 | 中国石油天然气股份有限公司 | Strain-based high-risk area pipe body stress monitoring system |
| CN201615815U (en) * | 2010-02-08 | 2010-10-27 | 中国人民解放军军事交通学院 | Pressure non-disassembly detection device for hydraulic rubber oil tube |
| CN202281664U (en) * | 2011-10-19 | 2012-06-20 | 广东美的电器股份有限公司 | Stress-strain measuring device for air conditioner pipeline |
| CN103350926A (en) * | 2013-07-31 | 2013-10-16 | 华南农业大学 | Automatic unwinding and rewinding control system and method for flexible pipeline |
| CN104344218A (en) * | 2013-07-31 | 2015-02-11 | 无锡慧思顿科技有限公司 | Intelligent delivery pipeline with multiple integrated sensors and monitoring system |
| CN204042452U (en) * | 2014-05-07 | 2014-12-24 | 中联重科股份有限公司 | The blocking of pump truck conveyance conduit surveillance equipment, alarm system and engineering machinery |
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Application publication date: 20150617 |