CN102654479B - Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system - Google Patents
Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system Download PDFInfo
- Publication number
- CN102654479B CN102654479B CN201110051160.5A CN201110051160A CN102654479B CN 102654479 B CN102654479 B CN 102654479B CN 201110051160 A CN201110051160 A CN 201110051160A CN 102654479 B CN102654479 B CN 102654479B
- Authority
- CN
- China
- Prior art keywords
- pin
- analog switch
- multiway analog
- mcu
- ground connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The present invention is a kind of metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system, relates to measurement and the pipe-line system technical field of measuring magnetic variable, thickness linear dimension. It is made up of multiple sensors, multiway analog switch, A/D, MCU, RS-485; Multiple sensor outputs connect the input of multiway analog switch, and multiway analog switch output connects the input of A/D, and the output of A/D connects the input of MCU, and the output of MCU meets RS-485; Multiple sensors pass to A/D through multiway analog switch with serial mode by the stray field signal on the three dimensions vector collecting, and convert to after data signal, pass to master control borad MCU carry out processing and the storage of data by SPI, and result is sent by RS-485. System of the present invention is comparatively simple, and reliability is high, maintainable good.
Description
Technical field
The present invention is a kind of metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system, relates to surveyMeasurement and the pipe-line system technical field of amount magnetic variable, thickness linear dimension.
Background technology
At present, magnetic leakage signal detect be to metallic conduit carry out in-service corrosion default detection economy and effectivelyMeans, the corrosion default that is widely used in the pipeline such as oil, natural gas detects. But the Magnetic Flux Leakage Inspecting of Present DomesticBe all the detection technique based on one dimension, and be all to adopt analog signal transmission mode, have intrinsic limitation.Three-dimensional Magnetic Flux Leakage Inspecting technology, than one dimension Magnetic Flux Leakage Inspecting technology, has obvious advantage, can be more fullyReflection conduit running state, even can detect the defect that one dimension Magnetic Flux Leakage Inspecting technology cannot detect. ThreeIn dimension magnetic leakage signal detection technique, because port number is numerous, if adopt traditional analog signal transmission mode,Will inevitably bring a large amount of connecting lines, make system too fat to move huge, reliability and maintainability all reduces greatly.
On March 4th, 2007, the CN1928543A of bulletin disclosed a kind of steel wire based on Hall sensor arrayRope lossless detection method and device, it be by permanent magnet excitation mechanism, Hall sensor array, cmos analog switch,Photoelectric encoder, sensor probe, data collection processor and computer composition. " computer measurement and control "" pipeline under the ocean defect and magnetic leakage detection signal gathers and Processing System Design " that the 12nd volume the 2nd periodical is stepped onSystem formed by sensor array, multiway analog switch, A/D, signal process part. This two technologyThough can measure the defect of steel wire rope or pipeline under the ocean, its signal recording is one dimension, that is to say,Can not measure comprehensive defect, still have very large limitation.
Summary of the invention
The object of the invention is to invent that a kind of system is comparatively simple, reliability is high and maintainable good metal tubeThe three-dimensional magnetic leakage signal acquisition system of road corrosion default total digitalization.
In order to overcome one dimension magnetic leakage signal detection technique in the deficiency aspect defect inspection, the present invention proposesA kind of three-dimensional magnetic leakage signal detection technique scheme, can than one dimension Magnetic Flux Leakage Inspecting technology obtain more aboutThe information of defect of pipeline aspect. In this scheme, in order to reduce the quantity of connecting line, strengthen system reliabilityAnd maintainability, this three-dimensional magnetic leakage signal detection technique has adopted totally digitilized side signal transmission case.
The present invention solves the technical scheme that its technical problem takes: probe module is by the three-dimensional space collectingBetween stray field signal on vector convert on the spot data signal to, and by serial communication mode transmission at a high speedCarry out processing and the storage of data to master control borad. In the time detecting end, PC will be stored in by usb busTesting result on master control borad reads in computer, carries out data analysis.
Formation of the present invention is shown in Fig. 1, and it is by multiple sensors, multiway analog switch, A/D, MCU, RS-485Composition. Multiple sensor outputs connect the input of multiway analog switch, and multiway analog switch output connects the defeated of A/DEnter, the output of A/D connects the input of MCU, and the output of MCU meets RS-485.
Multiple sensors by the stray field signal on the three dimensions vector collecting through multiway analog switch with stringLine mode passes to A/D, converts to after data signal, passes to master control borad MCU carry out locating of data by SPIReason and storage, result is sent by RS-485.
Electrical schematic diagram of the present invention is shown in Fig. 2, and 1 pin of probe module U1-U12 meets 1 of A/DU15 after being connectedThe 8 pin Vcc of pin Vcc and RS-485 level translator U16; 2 pin of probe module U1-U12 connect after being connectedGround; 3 pin of probe module U1-U12 connect respectively multiway analog switch U13 19 pin, 20 pin, 21 pin,22 pin, 23 pin, 24 pin, 25 pin, 26 pin, 11 pin, 10 pin, 9 pin, 8 pin; Multiway analog switch1 pin of U13 meets the 1 pin Vcc of A/DU15,18 pin of multiway analog switch U13,14 pin, 15 pin,16 pin, 17 pin connect respectively 12 pin, 13 pin, 14 pin, 15 pin, 16 pin of MCUU14, multi-channel analog12 pin of switch U13 and 27 pin ground connection, 1 pin of MCUU14,2 pin, 4 pin ground connection; 6 of A/DU15Pin, 5 pin, 4 pin connect respectively 29 pin, 31 pin, 32 pin of MCUU14,2 pin ground connection, and 3 pin connect multichannel mouldIntend 28 pin of switch U13; 4 pin, 3 of RS-485 level translator U16,2 pin, 1 pin meet respectively MCU28 pin of U14,26 pin, 27 pin, 5 pin ground connection.
Wherein:
U1-U12 is probe module 815;
U13 is multiway analog switch, selects ADG702;
U14 is MCU, selects C8051F903;
U15 is that A/D selects AD7476;
U16 is RS-485 level translator, selects ADM4583.
System of the present invention is too fat to move huge unlike prior art, and comparatively simple, reliability is high, maintainabilityGood.
Brief description of the drawings
The three-dimensional magnetic leakage signal acquisition system of Fig. 1 theory diagram
The three-dimensional magnetic leakage signal acquisition system of Fig. 2 electrical schematic diagram
Detailed description of the invention
Embodiment. the formation of this example is shown in Fig. 1, it by 12 sensors, multiway analog switch, A/D, MCU,RS-485 composition. 12 sensor outputs connect the input of multiway analog switch, and multiway analog switch output meets A/DInput, the output of A/D connects the input of MCU, the output of MCU meets RS-485.
This routine electrical schematic diagram is shown in Fig. 2, and 1 pin of probe module U1-U12 connects 1 pin of A/DU15 after being connectedThe 8 pin Vcc of Vcc and RS-485 level translator U16; Ground connection after 2 pin of probe module U1-U12 are connected;3 pin of probe module U1-U12 connect respectively 19 pin, 20 pin, 21 pin, 22 of multiway analog switch U13Pin, 23 pin, 24 pin, 25 pin, 26 pin, 11 pin, 10 pin, 9 pin, 8 pin; Multiway analog switch U131 pin meet the 1 pin Vcc of A/DU15,18 pin of multiway analog switch U13,14 pin, 15 pin, 16Pin, 17 pin connect respectively 12 pin, 13 pin, 14 pin, 15 pin, 16 pin of MCUU14, multiway analog switch12 pin of U13 and 27 pin ground connection, 1 pin of MCUU14,2 pin, 4 pin ground connection; 6 pin of A/DU15,5 pin, 4 pin connect respectively 29 pin, 31 pin, 32 pin of MCUU14,2 pin ground connection, and 3 pin connect multi-channel analog and openClose 28 pin of U13; 4 pin, 3 of RS-485 level translator U16,2 pin, 1 pin meet respectively MCUU1428 pin, 26 pin, 27 pin, 5 pin ground connection.
Wherein:
Probe module U1-U12 selects 815;
Multiway analog switch U13 selects ADG702;
A/DU15 selects AD7476
MCUU14 selects C8051F903;
RS-485 level translator U16 selects ADM4583.
In this example, in each probe module, have 12 Hall elements, be divided into 4 groups, 3 every group, pointNot for detection of the stray field signal radially, on the three dimensions vector of circumferential and axial of certain position. 12The signal of road sensor, after a multiway analog switch, enters the A/D sampling core of 1 12 successivelySheet is sampled, and sampled result is obtained by spi bus by microcontroller. Microcontroller is again by sampled resultVia RS-485 bus at a high speed, send to successively master control borad.
Between each probe module and master control borad, there are 4 connecting lines :+5V power line, ground wire and RS-485A, B holding wire. If adopt traditional analog signal transmission mode, need at least 13 connectionsLine.
In Fig. 2, each probe module is independent, carry out communication with master control borad concurrently, with raising systemSignal sampling and data transmission bauds. RS-485 communication speed between probe module and master control borad is6.125Mbps. The sampled data that master control borad transmits each probe module deposits NANDFLASH memory in,After sampling process finishes, then send to computer by usb bus, carry out metal for DASThe defect analysis of test specimen.
This example is through test, and comparatively simple, reliability is high, maintainable good.
Claims (1)
1. a metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system, is characterized in thatIt is made up of multiple sensors, multiway analog switch, A/D, MCU, RS-485; Multiple sensors are defeatedGo out to connect the input of multiway analog switch, multiway analog switch output connects the input of A/D, the output of A/DConnect the input of MCU, the output of MCU meets RS-485;
Multiple sensors by the stray field signal on the three dimensions vector collecting through multiway analog switchPass to A/D with serial mode, convert to after data signal, pass to master control borad MCU by SPI and enterThe processing of row data and storage, result is sent by RS-485;
1 pin of probe module U1-U12 connects 1 pin Vcc and the RS-485 electricity of A/DU15 after being connectedThe 8 pin Vcc of flat turn parallel operation U16; Ground connection after 2 pin of probe module U1-U12 are connected; Probe3 pin of module U1-U12 connect respectively multiway analog switch U13 19 pin, 20 pin, 21 pin,22 pin, 23 pin, 24 pin, 25 pin, 26 pin, 11 pin, 10 pin, 9 pin, 8 pin; Multichannel1 pin of analog switch U13 meets the 1 pin Vcc of A/DU15,18 pin of multiway analog switch U13,14 pin, 15 pin, 16 pin, 17 pin connect respectively MCUU14 12 pin, 13 pin, 14 pin,15 pin, 16 pin, 12 pin of multiway analog switch U13 and 27 pin ground connection, 1 pin of MCUU14,2 pin, 4 pin ground connection; 6 pin of A/DU15,5 pin, 4 pin connect respectively MCUU14 29 pin,31 pin, 32 pin, 2 pin ground connection, 3 pin connect 28 pin of multiway analog switch U13; RS-485 electricity4 pin, 3 of flat turn parallel operation U16,2 pin, 1 pin connect respectively MCUU14 28 pin, 26 pin,27 pin, 5 pin ground connection;
Described probe module selects 815;
Described multiway analog switch is selected ADG702;
Described MCU selects C8051F903;
Described A/D selects AD7476;
Described RS-485 level translator is selected ADM4583.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110051160.5A CN102654479B (en) | 2011-03-03 | 2011-03-03 | Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110051160.5A CN102654479B (en) | 2011-03-03 | 2011-03-03 | Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102654479A CN102654479A (en) | 2012-09-05 |
| CN102654479B true CN102654479B (en) | 2016-05-11 |
Family
ID=46730136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110051160.5A Active CN102654479B (en) | 2011-03-03 | 2011-03-03 | Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102654479B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220107653A1 (en) * | 2020-10-05 | 2022-04-07 | Mtd Products Inc | Sensor system and sensing method for an autonomous device |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499637B (en) * | 2013-09-30 | 2016-06-15 | 清华大学 | A kind of Fully-digital high-precision three-dimensional flux leakage signal acquisition device |
| GB201318096D0 (en) | 2013-10-14 | 2013-11-27 | Advanced Eng Solutions Ltd | Pipeline condition detecting apparatus and method |
| CN104459570A (en) * | 2014-11-20 | 2015-03-25 | 华东师范大学 | Multi-path parallel magnetic field signal collecting and transmitting system and method |
| CN104820391A (en) * | 2015-04-29 | 2015-08-05 | 苏州固基电子科技有限公司 | Multichannel monitoring device |
| CN106970144A (en) * | 2016-01-13 | 2017-07-21 | 宝山钢铁股份有限公司 | Strip Inner Defect Testing signal processing circuit and method |
| CN107588894A (en) * | 2017-09-15 | 2018-01-16 | 北京电子工程总体研究所 | A kind of minitype detecting device for box body tightness inspection |
| CN109358110B (en) * | 2018-11-28 | 2024-05-31 | 中国计量大学 | Array type electromagnetic multi-dimensional detection system for imaging internal defects of steel plate |
| CN110030498B (en) * | 2019-02-01 | 2021-03-05 | 中国石油化工股份有限公司 | Axial magnetic field signal compensation system for internal detection of ferromagnetic pipeline defects |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828219A (en) * | 2006-04-06 | 2006-09-06 | 上海交通大学 | Intelligent detector for submarine pipeline |
| CN201589769U (en) * | 2009-12-31 | 2010-09-22 | 青岛盛瀚色谱技术有限公司 | Ion chromatography data collection device |
| CN201965115U (en) * | 2011-03-03 | 2011-09-07 | 中国石油天然气集团公司 | Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system |
-
2011
- 2011-03-03 CN CN201110051160.5A patent/CN102654479B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828219A (en) * | 2006-04-06 | 2006-09-06 | 上海交通大学 | Intelligent detector for submarine pipeline |
| CN201589769U (en) * | 2009-12-31 | 2010-09-22 | 青岛盛瀚色谱技术有限公司 | Ion chromatography data collection device |
| CN201965115U (en) * | 2011-03-03 | 2011-09-07 | 中国石油天然气集团公司 | Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220107653A1 (en) * | 2020-10-05 | 2022-04-07 | Mtd Products Inc | Sensor system and sensing method for an autonomous device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102654479A (en) | 2012-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102654479B (en) | Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system | |
| CN201965115U (en) | Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system | |
| CN102798660B (en) | Based on inner and outer walls of pipeline defect detecting device and the method for three axle leakage fields and current vortex | |
| CN102243200A (en) | On-line monitoring sensor of lubricating oil | |
| CN102706955A (en) | Pipeline defect characteristic extraction method and device based on uniaxial magnetic leakage data | |
| CN103645243A (en) | Electromagnetic nondestructive detection system of power transmission line | |
| CN103499637B (en) | A kind of Fully-digital high-precision three-dimensional flux leakage signal acquisition device | |
| CN202814915U (en) | Pipeline flux leakage corrosion detector probe and pipeline flux leakage corrosion detector | |
| CN102192953A (en) | Low-power consumption intelligent three-dimensional magnetic leakage detecting probe | |
| CN102230872A (en) | Device and method for on-line testing of grade of magnetic iron in flowing ore pulp | |
| CN200947094Y (en) | Steel wire nondestructive detection device based on Hall sensor array | |
| CN103712071A (en) | Nuclear magnetic resonance petroleum transmission pipeline leakage hidden danger detecting instrument and detecting method | |
| CN102954999A (en) | Triaxial magnetic leakage inner detection line signal determination method for girth joint crack defects of pipeline | |
| CN104155360B (en) | In-pipeline detector signal excitation and harvester and defect inspection method | |
| CN203148889U (en) | Nondestructive testing device | |
| CN108181377B (en) | Intelligent interpretation system and method for broken PCCP steel wire | |
| CN202928799U (en) | Engine comprehensive parameters detection system used for performance analysis | |
| CN210775325U (en) | Pipeline nondestructive testing system | |
| CN104568073A (en) | Hall liquid level detection device | |
| CN202442856U (en) | Sensing-cable oil-leakage detection apparatus | |
| CN201653387U (en) | Air photoelectric type digital measuring device for machining accuracy of inner hole | |
| CN109813800A (en) | It is sensed based on optical fiber magnetic and combines collection magnetic surface scanning cannula defect inspection method and device | |
| CN2434677Y (en) | Metal magnetic memory diagnosis instrument | |
| CN202614724U (en) | Multidirectional high-sensitivity electromagnetic flaw detection sensing device | |
| CN206960462U (en) | A kind of seawater quality optics on-line monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170301 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: China National Petroleum Corporation Patentee after: China Petroleum Pipeline Bureau Engineering Co., Ltd. Address before: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee before: China National Petroleum Corporation Patentee before: China Petroleum and Natural Gas Pipeline Bureau |