CN109975390A - A kind of device detecting bridge cable surface disease - Google Patents
A kind of device detecting bridge cable surface disease Download PDFInfo
- Publication number
- CN109975390A CN109975390A CN201910174201.6A CN201910174201A CN109975390A CN 109975390 A CN109975390 A CN 109975390A CN 201910174201 A CN201910174201 A CN 201910174201A CN 109975390 A CN109975390 A CN 109975390A
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- China
- Prior art keywords
- module
- control unit
- signal amplification
- magnetic flux
- amplification circuit
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/85—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields using magnetographic methods
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
Abstract
The present invention provides a kind of devices for detecting bridge cable surface disease, including climbing robot, Magnetic Flux Leakage Inspecting unit, control unit, Magnetic Flux Leakage Inspecting unit includes strong magnet component, magnetosensitive electronic component and signal amplification circuit, strong magnet component is equipped with groove, magnetosensitive electronic component is installed in the groove, and magnetosensitive electronic component is connected with signal amplification circuit；Multiple Magnetic Flux Leakage Inspecting units are serially connected to be formed around one week leakage magnetic detection device of cable body, and leakage magnetic detection device is mounted on climbing robot；Signal amplification circuit is connected with described control unit, and described control unit is mounted on the climbing robot.The beneficial effects of the present invention are: it is an advantage of the invention that using specific shape Magnetic Flux Leakage Inspecting unit, so that detected cable body surface disease generates impulse response signal packet of certain scale when through detection workpiece, a vital parameter foundation is provided for the care and maintenance work of bridge health.
Description
Technical field
The present invention relates to bridge cable detection technique field more particularly to a kind of dresses for detecting bridge cable surface disease
It sets.
Background technique
The country is in bridge cable health maintenance and maintenance field to the method master of bridge cable surface Defect inspection at present
It goes to check using human eye if manually taking and hanging Lan Shangqiao, not only it will take a lot of manpower and time for the method, and due to
Bridge eminence working environment is changeable, and technical staff is easy fatigue during p is detected, therefore testing result is by human factor shadow
Sound is larger.These all will largely influence the health maintenance of bridge cable and the purpose of maintenance.
Summary of the invention
The present invention provides a kind of devices for detecting bridge cable surface disease, including climbing robot, Magnetic Flux Leakage Inspecting list
Member, control unit, the Magnetic Flux Leakage Inspecting unit include strong magnet component, magnetosensitive electronic component and signal amplification circuit, described
Strong magnet component is equipped with groove, and the magnetosensitive electronic component is installed in the groove, the magnetosensitive electronic component and institute
Signal amplification circuit is stated to be connected；Multiple Magnetic Flux Leakage Inspecting units are serially connected to be formed and fill around one week Magnetic Flux Leakage Inspecting of cable body
It sets, the leakage magnetic detection device is mounted on the climbing robot；The signal amplification circuit is connected with described control unit,
Described control unit is mounted on the climbing robot.
As a further improvement of the present invention, described control unit include the multichannel analog-to-digital conversion module being sequentially connected,
CPLD module, embedded single-chip computer system, the signal amplification circuit output end and the multichannel analog-to-digital conversion module input terminal
It is connected, parallel data acquisition is carried out by the CPLD module after multichannel analog-to-digital conversion module conversion after electric signal output,
Data acquisition results make stone filtering processing in CPLD module, will test in noise inhibited so that magnetic leakage signal
Shock response is more clear, and signal is completed the impact of dissimilarity signal under the assistance of embedded single-chip computer system after being filtered and rung
The judgement answered.
As a further improvement of the present invention, described control unit further includes wireless communication module, the radio communication mold
Block is connected with the embedded single-chip computer system, and testing result is embedded into formula SCM system and passes through on the wireless communication module
Reach PC machine.
As a further improvement of the present invention, described control unit further includes being connected with the embedded single-chip computer system
Movable motor control module.
As a further improvement of the present invention, the embedded single-chip computer system refers to ASIC instruction set, possesses IO
The single-chip microcontroller of function port, Flash and various communication interface functions is grasped in real time as the UC/OS-II that hardware platform is established
Make system；Described control unit further includes RTC clock, range finder module, audio video synchronization module, the embedded single-chip computer system point
It is not connected with the RTC clock, the range finder module, the audio video synchronization module.
As a further improvement of the present invention, the leakage magnetic detection device includes 16 magnetosensitive electronic components, described
Signal amplification circuit is 16 road signal amplification circuits, and the multichannel analog-to-digital conversion module is 16 road analog-to-digital conversion modules.
As a further improvement of the present invention, strong magnet component is the artificial permanent magnet with 1500GS intensity.
As a further improvement of the present invention, the magnetosensitive electronic component is Hall component.
As a further improvement of the present invention, be made of two-way operational amplifier 50 times of the signal amplification circuit are put
Big circuit and volt circuit of rationing the power supply, the electric signal that it can will convert into improve to 0 and arrive the section 2.5V.
As a further improvement of the present invention, the climbing robot is moved with the speed of 0.083m/s along cable body.
The beneficial effects of the present invention are: it is an advantage of the invention that using specific shape Magnetic Flux Leakage Inspecting unit so that tested
The cable body surface disease of survey generates impulse response signal packet of certain scale when through detection workpiece, and signal is by parallel
After real-time detection is realized in processing, then through filtering, envelope detected, dissimilarity shock response processing, it can be convenient, accurately and rapidly sentence
It is possible existing for disconnected dissimilarity, a vital parameter foundation is provided for the care and maintenance work of bridge health.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention, and in Fig. 1,1 is strong magnet component, and 2 be magnetosensitive electronic component, and 3 be magnetic
Field wire trend, 4 be PE measuring point rope face, and 5 be disease point.
Fig. 2 is that hardware circuit of the invention constitutes block diagram.
Specific embodiment
As shown in Figure 1, 2, the invention discloses a kind of devices for detecting bridge cable surface disease, including the machine that climbs
People, Magnetic Flux Leakage Inspecting unit, the Magnetic Flux Leakage Inspecting unit include strong magnet component 1, magnetosensitive electronic component 2 and signal amplification electricity
Road, the strong magnet component 1 are equipped with groove, and in the groove, the magnetosensitive electronics is first for the installation of magnetosensitive electronic component 2
Device 2 is connected with the signal amplification circuit；Multiple Magnetic Flux Leakage Inspecting units are serially connected to be formed around cable body one week
Leakage magnetic detection device, the leakage magnetic detection device are mounted on the climbing robot；The signal amplification circuit and the control
Unit processed is connected, and described control unit is mounted on the climbing robot.
Strong magnet component 1 is the artificial permanent magnet with 1500GS intensity, and high-intensitive magnet can be bridge cable rope
Body surface face magnetizes rapidly.
1 outer dimension 14cm*2cm*1.5cm of strong magnet component (length is generous), groove size 2.5cm*2cm*1cm (length and width
It is deep).
Magnetosensitive electronic component 2 is the highly sensitive Hall component of tool；The signal amplification circuit is by two-way operation
The 50 times of amplifying circuits and volt circuit of rationing the power supply that amplifier is constituted, the electric signal that it can will convert into improve to 0 and arrive the section 2.5V.
Multiple Magnetic Flux Leakage Inspecting units are serially connected to be formed around one week leakage magnetic detection device of cable body, specially sharp
With with flexible wirerope by multiple Magnetic Flux Leakage Inspecting unit strings together, both ends can be clasped to form one with lock end to end
Annular shape can encase detected cable body.
The leakage magnetic detection device includes 16 magnetosensitive electronic components.
It is mounted on and is climbed in robot using the leakage magnetic detection device, transport climbing robot at the uniform velocity up along cable body
It is dynamic, the magnetic leakage situation on leakage magnetic detection device real-time detection cable body surface in the process of movement, and the changes of magnetic field that will test
It is converted into electric signal output.It is 0.083m/s in the at the uniform velocity present invention, which not only can guarantee detection efficiency, but also can give
ADC provides the enough sample conversion time.The foundation of the 0.083m/s are as follows: the system is divided into T between taking ADC value
=0.03ms, the required envelope signal width judged will then realize that the detection of the envelope signal at least needs to sample as S=1.5mm
Points be N=S/T=33, and the distance that equipment is moved along after the completion of 33 data samplings be L=1.5*T*N=1.5*
0.03*33≈1.5mm。
Described control unit includes the multichannel analog-to-digital conversion module being sequentially connected, CPLD module, embedded single-chip computer system,
The leakage magnetic detection device includes 16 magnetosensitive electronic components, and the signal amplification circuit is 16 road signal amplification circuits,
The multichannel analog-to-digital conversion module is 16 road analog-to-digital conversion modules, and described control unit further includes wireless communication module, the nothing
Line communication module is connected with the embedded single-chip computer system, and testing result is embedded into formula SCM system and passes through the channel radio
Letter module is uploaded to PC machine.
Described control unit further includes the movable motor control module being connected with the embedded single-chip computer system.
The signal amplification circuit output end is connected with the multichannel analog-to-digital conversion module input terminal, and electric signal is exported,
Parallel data acquisition is carried out by CPLD module after multichannel analog-to-digital conversion module analog-to-digital conversion.The multichannel analog-to-digital conversion module
Refer to ADC analog-to-digital conversion module of 8,16 tunnel with SPI transmission, the corresponding 16 road Hall component output circuits of 16 road ADC；Institute
The CPLD module stated is the ispLSI device of a tool large capacity logic unit；Data acquisition results are in CPLD module
In make stone filtering processing, will test in other noises inhibited so that the shock response of magnetic leakage signal is more clear, be
Subsequent dissimilarity signal detection provides more accurate signal characteristic.The stone filtering is to utilize CPLD inside modules resource
The low-pass filter for designing 16 tunnel low orders is filtered operation to signal.Signal is after being filtered in embedded single-chip computer system
Assistance under complete the shock response of dissimilarity signal judgement and wireless transmission.The embedded single-chip computer system refers to a
With ASIC instruction set, possess abundant I O function port, the single-chip microcontroller conduct of high capability flash and various communication interface functions is hard
The UC/OS-II real time operating system that part platform is established.The shock response of the dissimilarity signal is because of cable body surface disease
Electric signal and only a few that caused leakage field place is converted into meet the interference signal of threshold signal feature.
Testing result is embedded into formula SCM system and is uploaded to PC machine in a manner of being wirelessly transferred, in conjunction with entire detection system
Video detection, distance detection and can quickly position the authenticity and specific location of disease synchronization time.The channel radio
Believe that module is a serial ports wireless transmission function module with 413MHz frequency range.
Described control unit further includes RTC clock, range finder module, audio video synchronization module, the embedded single-chip computer system
It is connected respectively with the RTC clock, the range finder module, the audio video synchronization module.
During climbing, leakage magnetic detection device carries out 360 degrees omnidirection to drag-line cable body and examines in real time climbing robot
Survey, the real-time video of Magnetic Flux Leakage Inspecting result and entire detection system, the parameters such as distance and time of creeping are counted, analyze and
Processing.
The real-time video of Magnetic Flux Leakage Inspecting result and entire detection system, the parameters such as distance and time of creeping are counted,
Analysis and processing refer to that Magnetic Flux Leakage Inspecting result needs the real-time video of synchronous detection system, distance of creeping and time to determine cable body
The specific location of authenticity existing for the disease of surface and place cable body.
The strong magnet component 1 of spill design, when spill design is so that the Magnetic Flux Leakage Inspecting unit motion is by surface disease point,
The excessive space of the magnetic line of force is provided Hall component inside installation groove is detected and generated because of magnetic line of force leakage
Stray field signal.When the design considerations of 1 size of strong magnet component is by surface disease, the magnetic line width of generation will meet leakage field
The requirement of the signal test and evaluation setting of detection device.Magnetic line width it is sufficiently wide can for because movement caused by magnetic dispersion due to
Caused fluctuation interference offer is advantageous to evade processing, to further increase the accuracy of Magnetic Flux Leakage Inspecting.
Single Chip MC in Embedded System cooperates with CPLD module to complete the filtering of signal stone, and envelope signal extracts and the parameter of judgement
Setting and execution.Envelope signal refers to leakage magnetic detection device generated magnetic flux leakage when there is disease on the cable body surface of process
Generated a kind of to respond based on magnetic leakage impact signal after magnetoelectricity conversion circuit, supplemented by a variety of interfering noise signals
Envelope shape signal.Dissimilarity impact signal refers to that the signal for meeting system design threshold threshold, this signal are not only indicated because of cable body table
Impulse response signal caused by the disease of face, while also the exception in accordance with design concept comprising generating by abnormal conditions is believed
Number.
It is technical the object of the invention is to solve bridge cable health maintenance and the cable body surface Defect inspection in maintenance
Existing deficiency, provide it is a kind of using magnetic flux leakage theory, execute thought parallel, in conjunction with the parallel executive capability of programmable logic device
And embedded scm controls the annular array leakage magnetic detection device for the Multi probe design being integrated to bridge cable cable body surface
Disease is detected.Climbing robot carries during leakage magnetic detection device at the uniform velocity up climbs along cable body, by with table
When the cable body of face disease, the trend of the cable body surface disease changing section magnetic line of force under the magnetic fields of leakage magnetic detection device, from
And magnetic flux leakage is formed, magnetic flux leakage is detected by the magnetosensitive electronic component 2 in leakage magnetic detection device and is converted into electric signal, then passes through
Signal amplification circuit amplification is supplied to the data source of multichannel analog-to-digital conversion module (ADC) acquisition, and CPLD module passes through parallel acquisition
The value of each road ADC carries out hard filtering and inhibits noise signal, and the envelope inspection of each road signal is completed under the assistance of embedded scm
Survey and the determination of dissimilarity signal.Finally accurately and rapidly reach detection mesh in conjunction with video, detecting distance and the time of detection system
's.
It is an advantage of the invention that using the Magnetic Flux Leakage Inspecting unit of specific shape, so that detected cable body surface disease is logical
Generate impulse response signal packet of certain scale when crossing detection workpiece, signal after real-time detection is realized in parallel processing,
It is handled again through filtering, envelope detected, dissimilarity shock response, can be convenient, accurately and rapidly judges possibility existing for dissimilarity, be
The care and maintenance work of bridge health provides a vital parameter foundation.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. it is a kind of detect bridge cable surface disease device, it is characterised in that: including climbing robot, Magnetic Flux Leakage Inspecting unit,
Control unit, the Magnetic Flux Leakage Inspecting unit include strong magnet component, magnetosensitive electronic component and signal amplification circuit, the strong magnetic
Iron component is equipped with groove, and the magnetosensitive electronic component is installed in the groove, the magnetosensitive electronic component and the letter
Number amplifying circuit is connected；Multiple Magnetic Flux Leakage Inspecting units are serially connected to be formed around one week leakage magnetic detection device of cable body,
The leakage magnetic detection device is mounted on the climbing robot；The signal amplification circuit is connected with described control unit, institute
Control unit is stated to be mounted on the climbing robot.
2. the apparatus according to claim 1, it is characterised in that: described control unit includes that the multichannel modulus being sequentially connected turns
Change the mold block, CPLD module, embedded single-chip computer system, the signal amplification circuit output end and the multichannel analog-to-digital conversion module
Input terminal is connected, and carries out parallel data by the CPLD module after multichannel analog-to-digital conversion module conversion after electric signal output
Acquisition, data acquisition results make stone filtering processing in CPLD module, will test in noise inhibited so that leakage field is believed
Number shock response it is more clear, signal after being filtered under the assistance of embedded single-chip computer system complete dissimilarity impact letter
Number response judgement.
3. the apparatus of claim 2, it is characterised in that: described control unit further includes wireless communication module, described
Wireless communication module is connected with the embedded single-chip computer system, testing result be embedded into formula SCM system pass through it is described wireless
Communication module is uploaded to PC machine.
4. the apparatus of claim 2, it is characterised in that: described control unit further includes and the embedded scm
The connected movable motor control module of system.
5. the apparatus of claim 2, it is characterised in that: the embedded single-chip computer system refers to be instructed with ASIC
Collection, possesses I O function port, the UC/OS- that the single-chip microcontroller of Flash and various communication interface functions is established as hardware platform
II real time operating system；Described control unit further includes RTC clock, range finder module, audio video synchronization module, the embedded monolithic
Machine system is connected with the RTC clock, the range finder module, the audio video synchronization module respectively.
6. the apparatus of claim 2, it is characterised in that: the leakage magnetic detection device includes 16 magnetosensitive electronics members
Device, the signal amplification circuit are 16 road signal amplification circuits, and the multichannel analog-to-digital conversion module is 16 tunnel analog-to-digital conversion moulds
Block.
7. the apparatus according to claim 1, it is characterised in that: strong magnet component is the artificial permanent magnetism with 1500GS intensity
Iron, 1 outer dimension of strong magnet component are as follows: long 14cm, width 2cm, thickness 1.5cm；The groove size are as follows: long 2.5cm, width 2cm, depth
1cm。
8. the apparatus according to claim 1, it is characterised in that: the magnetosensitive electronic component is Hall component.
9. the apparatus according to claim 1, it is characterised in that: the signal amplification circuit is by two-way operational amplifier structure
At 50 times of amplifying circuits and volt circuit of rationing the power supply, the electric signal that it can will convert into improve to 0 to the section 2.5V.
10. the apparatus according to claim 1, it is characterised in that: the climbing robot is with the speed of 0.083m/s along rope
Body is moved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910174201.6A CN109975390A (en) | 2019-03-08 | 2019-03-08 | A kind of device detecting bridge cable surface disease |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910174201.6A CN109975390A (en) | 2019-03-08 | 2019-03-08 | A kind of device detecting bridge cable surface disease |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109975390A true CN109975390A (en) | 2019-07-05 |
Family
ID=67078158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910174201.6A Pending CN109975390A (en) | 2019-03-08 | 2019-03-08 | A kind of device detecting bridge cable surface disease |
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| CN104048164A (en) * | 2014-06-16 | 2014-09-17 | 东北大学 | Mileage measuring device and method of in-pipeline detector |
| CN106645386A (en) * | 2016-12-02 | 2017-05-10 | 北京邮电大学 | Online monitoring instrument of aerial mancar wire rope |
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2019
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201437247U (en) * | 2009-01-21 | 2010-04-14 | 重庆大学 | Robot capable of crawling cable |
| CN102071639A (en) * | 2010-12-01 | 2011-05-25 | 马鞍山市力翔机械自动化科技有限公司 | Rolling type cable robot |
| CN102323331A (en) * | 2011-09-07 | 2012-01-18 | 华中科技大学 | In service cable rope defect detection device |
| CN103248873A (en) * | 2013-05-02 | 2013-08-14 | 大连海创高科信息技术有限公司 | Intelligent elevator and operation method |
| CN103645243A (en) * | 2013-11-28 | 2014-03-19 | 南京航空航天大学 | Electromagnetic nondestructive detection system of power transmission line |
| CN104048164A (en) * | 2014-06-16 | 2014-09-17 | 东北大学 | Mileage measuring device and method of in-pipeline detector |
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