CN102654479A - Fully-digitalized three-dimensional magnetic flux leakage signal acquisition system for metallic pipeline corrosion defect - Google Patents
Fully-digitalized three-dimensional magnetic flux leakage signal acquisition system for metallic pipeline corrosion defect Download PDFInfo
- Publication number
- CN102654479A CN102654479A CN2011100511605A CN201110051160A CN102654479A CN 102654479 A CN102654479 A CN 102654479A CN 2011100511605 A CN2011100511605 A CN 2011100511605A CN 201110051160 A CN201110051160 A CN 201110051160A CN 102654479 A CN102654479 A CN 102654479A
- Authority
- CN
- China
- Prior art keywords
- pin
- mcu
- analog switch
- acquisition system
- leakage signal
- 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.)
- Granted
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention relates to a fully-digitalized three-dimensional magnetic flux leakage signal acquisition system for metallic pipeline corrosion defects, and relates to the technical field of the measurement to the magnetic variation and the linear dimension of the thickness, and the pipeline system. The fully-digitalized three-dimensional magnetic flux leakage signal acquisition system comprises a plurality of sensors, multiple channels of analog switches, an A/D (analog to digital) converter, a microprogrammed control unit (MCU) and a starting rheostat (RS-485), wherein the outputs of the sensors are connected with the inputs of the multipath analog switch; the outputs of the multiple channels of analog switches are connected with the input of the of the A/D converter; the output of the A/D converter is connected with the input of the MCU, and the output of MCU is connected with RS-485; magnetic flux leakage signals which are collected on a three dimensional space vector by the sensors are transmitted to the A/D converter through the multipath analog switch in a serial mode; after the magnetic flux leakage signals are converted into digital signals, the digital signals are transmitted to the microprogrammed control unit (MCU) to be processed and stored; and the results are sent out by RS-485. The fully-digitalized three-dimensional magnetic flux leakage signal acquiring system disclosed by the invention has the advantages of high reliability and favorable maintainability and is simple.
Description
Technical field
The present invention is the three-dimensional magnetic leakage signal acquisition system of a kind of metallic conduit corrosion default total digitalization, relates to measurement and the piping system technical field of measuring magnetic variable, thickness linear dimension.
Background technology
At present, to detect be economy that metallic conduit is carried out detecting at the labour corrosion default and effective means are widely used in Corrosion of Pipeline defects detection such as oil, rock gas to magnetic leakage signal.But current domestic Magnetic Flux Leakage Inspecting all is based on the detection technique of one dimension, and all is to adopt the analog signal transmission mode, and intrinsic limitation is arranged.Three-dimensional Magnetic Flux Leakage Inspecting compared with techniques has remarkable advantages in one dimension Magnetic Flux Leakage Inspecting technology, can more fully reflect the pipeline running status, in addition can detect one dimension Magnetic Flux Leakage Inspecting technology the defective that can't detect.In three-dimensional magnetic leakage signal detection technique, because port number is numerous,, will inevitably bring a large amount of connecting lines if adopt the conventional analogue signal transmission form, 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 wire rope lossless detection method and device based on Hall sensor array, and it is made up of permanent magnet excitation mechanism, Hall sensor array, cmos analog switch, photoelectric encoder, sensor probe, data collection processor and computing machine.The system of " pipeline under the ocean defect and magnetic leakage detection signal is gathered and Processing System Design " that " computer measurement and control " the 12nd volume the 2nd periodical is stepped on partly is made up of sensor array, multiway analog switch, A/D, digital signal processing.Though this two technology can be measured the defective of wire rope or pipeline under the ocean, its signal that records is an one dimension, that is to say, can not measure comprehensive defective, still has very big limitation.
Summary of the invention
The objective of the invention is to invent that a kind of system is comparatively simple, reliability is high and the three-dimensional magnetic leakage signal acquisition system of maintainable good metallic conduit corrosion default total digitalization.
In order to overcome the deficiency of one dimension magnetic leakage signal detection technique in the defect of pipeline context of detection, the present invention proposes a kind of three-dimensional magnetic leakage signal detection technique scheme, can obtain more information than one dimension Magnetic Flux Leakage Inspecting technology about the defect of pipeline aspect.In this scheme, in order to reduce the quantity of connecting line, enhance system reliability and 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 matters takes: probe module converts the stray field signal on the three dimensions vector that collects to digital signal on the spot, and passes to processing and the storage that master control borad carries out data through serial communication mode at a high speed.When detecting end, PC reads in the computing machine through the testing result that usb bus will be stored on the master control borad, carries out data analysis.
Formation of the present invention is seen Fig. 1, and it is made up of a plurality of sensors, multiway analog switch, A/D, MCU, RS-485.A plurality of 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.
A plurality of sensors pass to A/D through multiway analog switch with serial mode with the stray field signal on the three dimensions vector that collects, convert digital signal to after, pass to processing and the storage that master control borad MCU carries out data by SPI, the result is sent by RS-485.
Electrical schematic diagram of the present invention is seen Fig. 2, and 1 pin of probe module U1-U12 meets the 1 pin Vcc of A/D U15 and the 8 pin Vcc of RS-485 level translator U16 after linking to each other; Ground connection after 2 pin of probe module U1-U12 link to each other; 3 pin of probe module U1-U12 connect 19 pin, 20 pin, 21 pin, 22 pin, 23 pin, 24 pin, 25 pin, 26 pin, 11 pin, 10 pin, 9 pin, 8 pin of multiway analog switch U13 respectively; 1 pin of multiway analog switch U13 meets the 1 pin Vcc of A/D U15; 18 pin of multiway analog switch U13,14 pin, 15 pin, 16 pin, 17 pin connect 12 pin, 13 pin, 14 pin, 15 pin, 16 pin of MCU U14 respectively; 12 pin of multiway analog switch U13 and 27 pin ground connection, 1 pin of MCU U14,2 pin, 4 pin ground connection; 6 pin of A/D U15,5 pin, 4 pin connect 29 pin, 31 pin, 32 pin of MCU U14 respectively, 2 pin ground connection, and 3 pin connect 28 pin of multiway analog switch U13; 4 pin, 3 of RS-485 level translator U16,2 pin, 1 pin connect 28 pin, 26 pin, 27 pin of MCUU14,5 pin ground connection respectively.
Wherein:
U1-U12 is a probe module 815;
U13 is a multiway analog switch, selects ADG702 for use;
U14 is MCU, selects C8051F903 for use;
U15 is that A/D selects AD7476 for use;
U16 is the RS-485 level translator, selects ADM4583 for use.
System of the present invention is such too fat to move huge, comparatively simple unlike prior art, and reliability is high, and is maintainable good.
Description of 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
Embodiment
Embodiment. this routine formation is seen Fig. 1, and it is made up of 12 sensors, multiway analog switch, A/D, MCU, RS-485.12 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.
This routine electrical schematic diagram is seen Fig. 2, and 1 pin of probe module U1-U12 meets the 1 pin Vcc of A/D U15 and the 8 pin Vcc of RS-485 level translator U16 after linking to each other; Ground connection after 2 pin of probe module U1-U12 link to each other; 3 pin of probe module U1-U12 connect 19 pin, 20 pin, 21 pin, 22 pin, 23 pin, 24 pin, 25 pin, 26 pin, 11 pin, 10 pin, 9 pin, 8 pin of multiway analog switch U13 respectively; 1 pin of multiway analog switch U13 meets the 1 pin Vcc of A/D U15; 18 pin of multiway analog switch U13,14 pin, 15 pin, 16 pin, 17 pin connect 12 pin, 13 pin, 14 pin, 15 pin, 16 pin of MCU U14 respectively; 12 pin of multiway analog switch U13 and 27 pin ground connection, 1 pin of MCU U14,2 pin, 4 pin ground connection; 6 pin of A/D U15,5 pin, 4 pin connect 29 pin, 31 pin, 32 pin of MCU U14 respectively, 2 pin ground connection, and 3 pin connect 28 pin of multiway analog switch U13; 4 pin, 3 of RS-485 level translator U16,2 pin, 1 pin connect 28 pin, 26 pin, 27 pin of MCU U14,5 pin ground connection respectively.
Wherein:
Probe module U1-U12 selects 815;
Multiway analog switch U13 selects ADG702 for use;
A/D U15 selects AD7476 for use
MCU U14 selects C8051F903 for use;
RS-485 level translator U16 selects ADM4583 for use.
In this example, have 12 Hall elements in each probe module, be divided into 4 groups, 3 every group, be respectively applied for detect certain position radially, the stray field signal on the three dimensions vector of circumferential and axial.The signal of No. 12 sensors is after through a multiway analog switch, and the A/D sampling A that gets into 1 12 is successively sampled, and sampled result is obtained through spi bus by microcontroller.Microcontroller with the RS-485 bus of sampled result via high speed, sends to master control borad more successively.
4 connecting lines are arranged: the A of+5V power lead, ground wire and RS-485, B signal wire between each probe module and the master control borad.If adopt the conventional analogue signal transmission form then at least 13 connecting lines of needs.
In Fig. 2, each probe module is all independent, carry out communication with master control borad concurrently, to improve the signal sampling and the data rate of system.RS-485 communication speed between probe module and the master control borad is 6.125Mbps.The sampled data that master control borad transmits each probe module deposits NAND FLASH storer in, after sampling process finishes, sends to computing machine through usb bus again, supplies DAS to carry out the defect analysis of metal specimen.
This example is through test, and is comparatively simple, and reliability is high, maintainable good.
Claims (7)
1. the three-dimensional magnetic leakage signal acquisition system of metallic conduit corrosion default total digitalization is characterized in that it is made up of a plurality of sensors, multiway analog switch, A/D, MCU, RS-485; A plurality of 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;
A plurality of sensors pass to A/D through multiway analog switch with serial mode with the stray field signal on the three dimensions vector that collects, convert digital signal to after, pass to processing and the storage that master control borad MCU carries out data by SPI, the result is sent by RS-485.
2. the three-dimensional magnetic leakage signal acquisition system of metallic conduit corrosion default total digitalization according to claim 1, it is characterized in that its electric principle is: 1 pin of probe module U1-U12 meets the 1 pin Vcc of A/D U15 and the 8 pin Vcc of RS-485 level translator U16 after linking to each other; Ground connection after 2 pin of probe module U1-U12 link to each other; 3 pin of probe module U1-U12 connect 19 pin, 20 pin, 21 pin, 22 pin, 23 pin, 24 pin, 25 pin, 26 pin, 11 pin, 10 pin, 9 pin, 8 pin of multiway analog switch U13 respectively; 1 pin of multiway analog switch U13 meets the 1 pin Vcc of A/D U15; 18 pin of multiway analog switch U13,14 pin, 15 pin, 16 pin, 17 pin connect 12 pin, 13 pin, 14 pin, 15 pin, 16 pin of MCU U14 respectively; 12 pin of multiway analog switch U13 and 27 pin ground connection, 1 pin of MCU U14,2 pin, 4 pin ground connection; 6 pin of A/D U15,5 pin, 4 pin connect 29 pin, 31 pin, 32 pin of MCU U14 respectively, 2 pin ground connection, and 3 pin connect 28 pin of multiway analog switch U13; 4 pin, 3 of RS-485 level translator U16,2 pin, 1 pin connect 28 pin, 26 pin, 27 pin of MCU U14,5 pin ground connection respectively.
3. the three-dimensional magnetic leakage signal acquisition system of metallic conduit corrosion default according to claim 2 total digitalization is characterized in that said probe module selects 815 for use.
4. the three-dimensional magnetic leakage signal acquisition system of metallic conduit corrosion default according to claim 2 total digitalization is characterized in that said multiway analog switch selects ADG702 for use.
5. the three-dimensional magnetic leakage signal acquisition system of metallic conduit corrosion default total digitalization according to claim 2 is characterized in that said MCU selects C8051F903 for use.
6. the three-dimensional magnetic leakage signal acquisition system of metallic conduit corrosion default total digitalization according to claim 2 is characterized in that said A/D selects AD7476 for use.
7. the three-dimensional magnetic leakage signal acquisition system of metallic conduit corrosion default according to claim 2 total digitalization is characterized in that said RS-485 level translator selects ADM4583 for use.
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 true CN102654479A (en) | 2012-09-05 |
| CN102654479B 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 (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499637A (en) * | 2013-09-30 | 2014-01-08 | 清华大学 | Fully-digital high-precision three-dimensional flux leakage signal acquisition device |
| 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 |
| WO2015055995A3 (en) * | 2013-10-14 | 2015-06-11 | Advanced Engineering Solutions Ltd | Pipeline condition detecting apparatus 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 |
| CN109358110A (en) * | 2018-11-28 | 2019-02-19 | 中国计量大学 | A kind of array electromagnetism various dimensions detection system for the imaging of steel plate internal flaw |
| CN110030498A (en) * | 2019-02-01 | 2019-07-19 | 中国石油化工股份有限公司 | A kind of axial magnetic field signal compensation apparatus for being detected in ferromagnetic pipeline defect |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022076213A1 (en) * | 2020-10-05 | 2022-04-14 | Mtd Products Inc | Sensor system and a sensing method for an autonomous device |
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 (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499637A (en) * | 2013-09-30 | 2014-01-08 | 清华大学 | Fully-digital high-precision three-dimensional flux leakage signal acquisition device |
| 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 |
| WO2015055995A3 (en) * | 2013-10-14 | 2015-06-11 | Advanced Engineering Solutions Ltd | Pipeline condition detecting apparatus and method |
| AU2014335928B2 (en) * | 2013-10-14 | 2017-09-07 | Advanced Engineering Solutions Ltd | Pipeline condition detecting apparatus and method |
| US9976986B2 (en) | 2013-10-14 | 2018-05-22 | Advanced Engineering 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 |
| CN109358110A (en) * | 2018-11-28 | 2019-02-19 | 中国计量大学 | A kind of array electromagnetism various dimensions detection system for the imaging of steel plate internal flaw |
| 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 |
| CN110030498A (en) * | 2019-02-01 | 2019-07-19 | 中国石油化工股份有限公司 | A kind of axial magnetic field signal compensation apparatus for being detected in ferromagnetic pipeline defect |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102654479B (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102654479A (en) | Fully-digitalized three-dimensional magnetic flux leakage signal acquisition system for metallic pipeline corrosion defect | |
| CN201965115U (en) | Metal pipeline corrosion defect full-digitalization three-dimensional magnetic leakage signal acquisition system | |
| CN103645243A (en) | Electromagnetic nondestructive detection system of power transmission line | |
| CN103162093B (en) | A kind of data collector for oil pipeline flux leakage detector and method | |
| CN102798660A (en) | Device and method for detecting defects of inner and outer walls of pipeline based on three-axis magnetic flux leakage and eddy current | |
| CN104227501A (en) | Testing and analyzing system for rotating errors of main shaft | |
| CN200947094Y (en) | Steel wire nondestructive detection device based on Hall sensor array | |
| CN205157637U (en) | Generator carbon brush current distribution monitoring system | |
| CN104155360B (en) | In-pipeline detector signal excitation and harvester and defect inspection method | |
| CN201156077Y (en) | Motor testing apparatus based on computer | |
| CN201311276Y (en) | Dynamic measuring device of brake disk thickness | |
| CN202329850U (en) | Temperature rise detecting system of switch apparatus | |
| CN202648944U (en) | Speed reducer performance test system | |
| CN202928799U (en) | Engine comprehensive parameters detection system used for performance analysis | |
| CN202928609U (en) | Electric eddy current dynamometer test stand data acquisition system | |
| CN202442856U (en) | Sensing-cable oil-leakage detection apparatus | |
| CN203191366U (en) | Condensate water data acquisition converting and transmitting device | |
| CN202158919U (en) | Two-way torque test display circuit of electric eddy current dynamometer and electric eddy current dynamometer | |
| CN109085782A (en) | Visualize aerodynamic parameter acquisition system | |
| CN201653387U (en) | Air photoelectric type digital measuring device for machining accuracy of inner hole | |
| CN103335706A (en) | Method for online detecting characteristics of engine vibration sensor | |
| CN109977618B (en) | Modularized design method of cathode protection remote detection device | |
| CN203350042U (en) | Measuring device for temperature or pressure of exhaust system of engine | |
| CN203148891U (en) | Board damage detection device based on planar electromagnetic sensor | |
| CN203909564U (en) | Signal collection device suitable for multiple sensors |
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 |