CN102243189B - On-line virtual testing system of steel cord conveyor belt - Google Patents
On-line virtual testing system of steel cord conveyor belt Download PDFInfo
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- CN102243189B CN102243189B CN 201110087038 CN201110087038A CN102243189B CN 102243189 B CN102243189 B CN 102243189B CN 201110087038 CN201110087038 CN 201110087038 CN 201110087038 A CN201110087038 A CN 201110087038A CN 102243189 B CN102243189 B CN 102243189B
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Abstract
The invention relates to an on-line virtual testing system of a steel cord conveyor belt and a testing method thereof, and belongs the on-line testing technical field of coal mine equipments, the invention is characterized in that the system comprises a X ray source, a high frequency high pressure generator, a scan detection apparatus, an explosion-proof junction box, optical cables, a host computer, a base plate, a column and the like. According to the invention, a CMOS scan detector is taken as a testing method, novel ray detection elements can be arranged to an array, and an integrated circuit is directly connected with the array, the whole processes of ray reception, photoelectric conversion and digitalization can be synchronously completed, so that the CMOS scan detector has high acquisition efficiency and realizes the dynamic noise reduction, wherein the geometric size can reach at 0.08mm*0.08mm, thereby the characteristics of low noise, high sensitivity and high image resolution of the system dynamic detection can be guaranteed, and the problem that the imaging of steel cord is influenced by the vibration of the conveyer belt can be solved, the present invention has the advantages of compact structure and light weight, the normal demand of coal mine production can be satisfied, so that the on-line virtual testing system of steel cord conveyor belt and the testing method are help for raising the safe production ability of coal mine.
Description
Technical field
The present invention a kind of steel rope core conveying belt on-line virtual testing system and method for testing belong to coal mine equipment on-line testing technical field.Relate to a kind of Online Transaction Processing based on compositions such as x-ray source, high-frequency and high-voltage generator, scanning probe device and virtual instruments and the technical scheme of method of testing thereof.
Background technology
Steel rope core conveying belt is used widely at the scene as the important means of coal production transportation.Because in the operational process, the problem of tearing in various degree occurs conveying belt at the scene, and then have influence on the safety in production in colliery.Detection is had an X-rayed to steel rope core conveying belt in on-the-spot most x-ray source of adopting at present, but the image that generates easily produces the problems such as distortion and brightness irregularities (shade), easily is subjected to the impact of conveying belt shake and sideslip, and can not reaches on-line testing.In addition on-the-spot also have the weak magnetic detection technique of employing that the coal conveyer belt steel core is detected online, but it easily is subjected to the impact of surrounding magnetic field and can not intuitively understands inner steel core state is comprehensively directly perceived.
Summary of the invention
The purpose of the present invention a kind of steel rope core conveying belt on-line virtual testing system and method for testing is: not high, the online foresight of rapid image acquisition precision is poor in order to solve in the prior art in the detection system of x-ray source, data storage processing insufficiency of function, function singleness, easily be subjected to the problems such as conveying belt shake and sideslip affect, thereby the technical scheme of a kind of steel rope core conveying belt on-line virtual testing system and method for testing is provided.
A kind of steel rope core conveying belt on-line virtual testing of the present invention system; it is characterized in that a kind of employing X ray high-frequency and high-voltage generator and complementary metal oxide semiconductor (CMOS) (complementary metal oxide semic conductor; be called for short CMOS) mode that combines of linear array scan detector; for delivery of band steel rope core real time imagery and quick tomoscan; the applying virtual test macro is finished image acquisition and processing simultaneously; can realize the disconnected core in steel rope core conveying belt inside; joint becomes flexible the quantitative Online Transaction Processing of situation; this system is by x-ray source 1; high-frequency and high-voltage generator 2; scanning probe device 3; explosion-proof wiring box 4; optical cable 5; host computer 6; base plate 7 and column 8 form; described base plate (7) and column (8) form scanning probe device (3) backbone; realize that scanning probe device (3) is fixing; be installed in the below of conveying belt 23 under the coal bunker blanking port place; described x-ray source 1; high-frequency and high-voltage generator 2 and scanning probe device 3 form the testing hardware circuit part; realize the image data acquiring function; described explosion-proof wiring box 4; optical cable 5 and host computer 6 are realized tele-video transmission; test and analysis; in the described scanning probe device 3 CMOS probe unit 9 is housed; analog switch 10; ADS8422 A/D converter 11; XC95144XL time schedule controller 12; Camera Link interface 13; CMOS probe unit 9 is arranged in an array; output voltage converts 16 digital signal to through analog switch 10 and ADS8422 A/D converter 11; the conversion work of XC95144XL time schedule controller 12 control simulation switches 10 and ADS8422 A/D converter 11; scanning probe device 3 shells adopt the aluminium protection; in the described explosion-proof wiring box 4 power supply 14 is housed; Camera Link optic fiber converter 15; be installed on the wall of defeated coal main shaft belt tunnel; the power supply 14 that be equipped with inside by cable respectively with high-frequency and high-voltage generator 2; scanning probe device 3 connects; be system power supply; the Camera Link interface 13 that is equipped with in Camera Link optic fiber converter 15 and the scanning probe device 3 is housed in the explosion-proof wiring box 4 to be connected; realize gathering the picture signal conversion; realize the distant signal transmission function through optical cable 5; described host computer 6 adopts take the industrialization collection of America NI company and control system Compact RIO acquisition station as the basis; NI PCI-1426 image pick-up card 16 is housed; Labview image processing software 17; interface 18; display 19; keyboard 20 and mouse 21; utilize FPGA chip 22 as kernel; realize the realtime graphic signals collecting under the virtual instrument platform; computational analysis and memory function; host computer 6 is installed on the conveying belt master-control room; described base plate 7 adopts length and width 400mm * 200mm; the steel plate of thickness 4-6mm; steel plate left hand edge and column 8 weld together; column 8 adopts the 2mm Plate Welding to become 30mm * 25mm * 900mm rectangle steel pole; and have the intermediate gap that screw is installed in vain; scanning probe device 3 is installed on the large frame of lower conveying belt 23; be screwed with column 8; by above-mentioned electric connection; scanning probe device 3 vertically is put in selected place, can finishes the data acquisition of conveying belt x-ray image; transmission and analysis.
Aforesaid a kind of steel rope core conveying belt on-line virtual testing system, it is characterized in that described high-frequency and high-voltage generator 2 adopts the ZL200710050425.3 X ray high frequency high voltage generator for medical use diagnose to be used for the industry perspective as the signal source of x-ray source 1, guarantee the X ray waveform approximately constant direct current of x-ray source 1 output, the short time exposure.Frequency of operation: 30-40KHz, minimum exposure time: 1ms, and adopt the ZL200920256954.3 mining explosion-proof X-ray transmitting box, meet requirement of explosion proof.
Aforesaid a kind of steel rope core conveying belt on-line virtual testing system, it is characterized in that described scanning probe device 3 adopts the STAR250 type black and white face battle array cmos detector of U.S. Cypress company, size: 244mm * 279mm * 33mm is according to the number of conveying belt width selection CMOS probe unit 9.
Aforesaid a kind of steel rope core conveying belt on-line virtual testing system is characterized in that the described conveying belt corresponding CMOS probe unit of the widest 2.2m (9) is 10.
Aforesaid a kind of steel rope core conveying belt on-line virtual testing system, it is characterized in that described explosion-proof wiring box 4 is installed on process optical cable 5 and host computer 6 connections on the wall of defeated coal main shaft belt tunnel, receives the picture signal that scanning probe devices 3 collect by Camera Link interface 13 simultaneously.RS485 interface 24 control XC95144XL time schedule controllers 12 work on the Camera Link optic fiber converter 15 in the explosion-proof wiring box 4.
Aforesaid a kind of steel rope core conveying belt on-line virtual testing system is characterized in that described host computer 6 is installed on the conveying belt master-control room, utilizes NI PCI-1426 image pick-up card 16 high speed acquisition picture signals.Image processing and analysis and evaluation algorithm among the Matlab are downloaded among the FPGA, in conjunction with Labview image processing software 17, guarantee that system's realtime graphic is analyzed and processing.
Its system's the key technical indexes:
Explosion-proof criteria: GB3836.4-2000 GB3836.2-2000
Power supply: aboveground: 220V 50Hz down-hole: 127V 50Hz
Maximum communication distance: 500m
Working temperature :-40 ℃-70 ℃
Test rate: 3000～4000mm/min
X ray greatest irradiation angle: 80 °
Conveying belt width: 0.6-2.2m
Imaging frame frequency: 30 frames/s
Imaging size :≤1mm
Conveying belt speed: 0-6m/s
Transmission loop: maximum 8 tunnel 16 bit digital quantity input
The method of testing of above-mentioned a kind of steel rope core conveying belt on-line virtual testing system is characterized in that comprising the following steps:
Because the present invention adopts above technical scheme, therefore have the following advantages:
1, adopt the CMOS scan detector as means of testing, a kind of novel X-ray detection X element arrangements is become an array, and with they directly and integrated circuit connect, finish synchronously ray reception, photoelectric conversion, digitizing overall process, has collecting efficiency high, can realize dynamic noise reduction, its physical dimension reaches 0.08mm * 0.08mm, the characteristics that thereby the system of assurance detection of dynamic noise is low, highly sensitive and image resolution ratio is high, thereby solved the problem because of the imaging of conveying belt effect of jitter steel rope core, has simultaneously compact conformation, lightweight characteristics.Can realize continuous working and detect in real time in conjunction with the x-ray source high-frequency and high-voltage generator, solve to shine when the X ray dash receiver was long in the past and held flimsy shortcoming, thus the serviceable life that has greatly strengthened system.When assessing for the not visible interconnection of device interior and structure simultaneously, traditional optical detection is with helpless, and traditional X-ray check is owing to the human injury is restricted greatly.
2, x-ray source adopts high-frequency and high-voltage generator, make output waveform approximately constant direct current, the ray stable performance, the soft ray composition is less, be conducive to the image quality raising and reduce radiohazard, can solving in the past, x-ray source adopts the power frequency mode shortcoming large to harm.X ray high-frequency and high-voltage generator time shutter while is accurate, realizes the short time exposure, is conducive to system's on-line testing, has improved simultaneously the operability of system.
3, solved the restriction of traditional X-ray radiographic source because of radiation angle, to the different in width conveying belt can not all standing the shortcoming of scanning, can be adapted to the conveying belt of different in width specification.Its scanning probe device 3 adopts the general frame structure removable, has dustproof, shockproof properties, and all weather operations is non-maintaining.
4, the method that adopts the identification of user's definition and feature to combine to the location of conveying belt steel rope core joint by signal processing automatic identification joint exponent number and in conjunction with the user habit numbering, and then reaches the addressing of trouble spot and overhauls foundation.Changed in the past and adopted the means such as speed pickup and rotary encoder in the detection system, had the saving cost, reduced advantages such as safeguarding and be accurate to mm level location.
5, adopt NI Compact RIO system and LabVIEW exploitation seamless link to make the user easily by pattern development environment access bottom hardware, Rapid Establishment embedded system Control ﹠ data acquisition reduces the technical risk of system development, production greatly.Simultaneously NI Compact RIO system is firm reliable, is adapted at using under the complex environment in colliery.
6, process the Real time capable module that adopts NI with management at computer data software, the FPGA program is accomplished the synchronous acquisition of data between many conveying belt, and realizes simultaneously local storage, improves the large capacity data acquisition transfer rate.
7, by analysis with assessment, according to definition defect state rank, display display alarm rank.
8, the method that adopts LabVIEW and Matlab to combine is used for making judgement, control and operation more accurate to the collection of image and identification, has high confidence level, hommization and intellectuality.
9, System Construction is simple, and is powerful, and processing ease is easy to use.
Description of drawings
Fig. 1 is system construction drawing of the present invention
Fig. 2 is the device schematic diagram of X ray high-frequency and high-voltage generator and CMOS linear array scan detector among the present invention
Fig. 3 is steel rope core conveying belt on-line virtual testing method flow diagram among the present invention
Fig. 4 is that the steel rope core conveying belt on-line virtual testing is analyzed and the process software system diagram among the present invention
1, x-ray source 2, high-frequency and high-voltage generator
3, scanning probe device 4, explosion-proof wiring box
5, optical cable 6, host computer
7, base plate 8, column
9, CMOS probe unit 10, analog switch
11, ADS8422 A/D converter 12, XC95144XL time schedule controller
13, Camera Link interface 14, power supply
15, Camera Link optic fiber converter 16, NI PCI-1426 image pick-up card
17, Labview graphical analysis and process software 18, interface
19, display 20, keyboard
21, mouse 22, FPGA chip
23, lower conveying belt 24, RS485 interface
Embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is done as detailed below:
As shown in Figure 1, steel rope core conveying belt on-line virtual testing system mainly is comprised of x-ray source 1, high-frequency and high-voltage generator 2, scanning probe device 3, explosion-proof wiring box 4, optical cable 5, host computer 6, base plate 7 and column 8.X-ray source 1; high-frequency and high-voltage generator 2 and scanning probe device 3 form the testing hardware circuit part; realize the image data acquiring function; explosion-proof wiring box 4; optical cable 5 and host computer 6 are realized tele-video transmission; test and analysis; base plate 7 adopts length and width 400mm * 200mm; the steel plate of thickness 4-6mm; steel plate left hand edge and column 8 weld together; column 8 adopts the 2mm Plate Welding to become 30mm * 25mm * 900mm rectangle steel pole; and have the intermediate gap that screw is installed in vain; form scanning probe device 3 backbones; realize that scanning probe device 3 is fixing; be installed in the below of conveying belt 23 under the coal bunker blanking port place; the CMOS probe unit 9 that is equipped with in the scanning probe device 3 is arranged in an array; output voltage converts 16 digital signal to through analog switch 10 and ADS8422 A/D converter 11; the conversion work of XC95144XL time schedule controller 12 control simulation switches 10 and ADS8422 A/D converter 11; its shell adopts the aluminium protection; the physical dimension of explosion-proof wiring box 4 is 385mm * 330mm * 121mm; in power supply 14 is housed; the Camera Link interface 13 that is equipped with in Camera Link optic fiber converter 15 and the scanning probe device 3 connects; be installed on the wall of defeated coal main shaft belt tunnel; realize gathering the picture signal conversion; realize the distant signal transmission function through optical cable 5; host computer 6 is installed on the conveying belt master-control room; gather image by NI PCI-1426 image pick-up card 16, utilize fpga chip 22 to analyze in conjunction with Labview image processing software 17; use display 19; keyboard 20 and mouse 21 are finished the realtime graphic signals collecting under the virtual instrument platform; computational analysis and memory function.
Its system's the key technical indexes:
Explosion-proof criteria: GB3836.4-2000 GB3836.2-2000
Power supply: aboveground: 220V 50Hz down-hole: 127V 50Hz
Maximum communication distance: 500m
Working temperature :-40 ℃-70 ℃
Detection rates: 3000～4000mm/min
X ray greatest irradiation angle: 80 °
Conveying belt width: 0.6-2.2m
Imaging frame frequency: 30 frames/s
Imaging size :≤1mm
Conveying belt speed: 0-6m/s
Transmission loop: maximum 8 tunnel 16 bit digital quantity input
As shown in Figure 2, in order to reach requirement of explosion proof, x-ray source 1 and high-frequency and high-voltage generator 2 are positioned over the ZL200920256954.3 mining explosion-proof X-ray transmitting box, are fixed on scanning probe device 3 base plates.Scanning probe device 3 is installed on lower conveying belt 22 large frame tops, and is fixing by bolt and column 8, forms general frame.
As shown in Figure 3, steel rope core conveying belt on-line virtual testing method specifically comprises the following steps:
1, connects the working power 14 of high-frequency and high-voltage generator 2 and scanning probe device 3.
2, open host computer 6, enter login interface.
3, enter mode of operation and select, check that gathering image history and the state estimation analysis of conveying belt steel rope core or system begins to gather image.
4, begin to gather image with mouse 21 clicks.
5, CompactRIO acquisition station self-check program.
6, test macro Fumction display and setting program.Program is divided into four modules: gather and set, show setting, data storage, real-time assessment.
7, enter the collection setting module, system testing timing and steel rope core the first joint marker, monitoring periods are set.Click to prepare to analyze and carry out system testing.To the method that the location of conveying belt steel rope core joint adopts the identification of user's definition and feature to combine, number by signal processing automatic identification joint exponent number and in conjunction with user habit.
8, enter demonstration module is set.Realtime graphic is analyzed display 19 display alarm information, accident defect, analytic curve by the Labview image processing software.
12, enter data memory module.Finish logout and time storage by Computer Storage part and software systems.The system data storage deposits the data of appointment in data file according to time tag, comprise the content of data acquisition channel 1s continuous acquisition data in each packet, Data Filename comprises following information: gather start time, data model storage, sampling rate etc.File content comprises the sampled images data.Too large for fear of data file can automatically be changed a file and preserve, and according to the hard drive space size, can automatically delete the data file before January.
13, enter the real-time assessment module.Finish the analysis of steel rope core accident defect, the analysis of conveying belt life appraisal, counter-measure and report generation by computer software.
As shown in Figure 4, the analysis of steel rope core conveying belt on-line virtual testing and process software system comprise realtime graphic analytic system, Intelligent data management system and adhesive tape fault diagnosis expert system.
The realtime graphic analytic system is for fear of the impact that is subjected to environmental baseline, visual characteristic and subjective consciousness, adopts the means of conversion, enhancing, recovery and the coding of image to reach the good result that image is processed.Utilize the powerful data acquisition function of LabVIEW, in conjunction with the powerful image processing function of Matlab, adopt COM technology Matlab Builder for COM that the M file is compiled into binary com component and be embedded in the LabVIEW program.Wherein image conversion processes to reach the quality of improving image by being transformed into frequency field, and the speed of can also the raising system processing adopts the edge of the more outstanding image of Radon conversion, is fit to the straight line in the detected image.The figure image intensifying is in order to strengthen the useful information in the image, weakens to disturb and noise, is convenient to observe identification and further analyzing and processing, adopts the means such as histogram technology, contrast enhancing.Image restoration is to avoid the factor such as high-speed motion, medium scattering, systematical distortion because of conveying belt to cause image degradation.Image Coding is in the situation that satisfy certain fidelity, the space hold amount of minimizing view data.
Intelligent data management system adopts traditional data disposal route and the combination of dynamically weighing appraisal procedure to use, and adopts and dynamically weighs automatic synchronization polymorphic type function in the appraisal procedure real time problem solving system.
The adhesive tape fault diagnosis expert system is by to conveying belt internal steel cored structure damage and internal force status carries out in real time, precise synchronization is measured and analysis, utilize diagnostic module effectively to control the conveying belt structure of steel pole and use state and development and evolution trend thereof, thereby further provide digital information " archives " administration base for the conveying belt operation.
Claims (6)
1. steel rope core conveying belt on-line virtual testing system; it is characterized in that a kind of mode that adopts the X ray high-frequency and high-voltage generator to combine with complementary metal oxide semiconductor (CMOS) linear array scan detector; for delivery of band steel rope core real time imagery and quick tomoscan; the applying virtual test macro is finished image acquisition and processing simultaneously; can realize the disconnected core in steel rope core conveying belt inside; joint becomes flexible the quantitative Online Transaction Processing of situation; this system is by x-ray source (1); high-frequency and high-voltage generator (2); scanning probe device (3); explosion-proof wiring box (4); optical cable (5); host computer (6); base plate (7) and column (8) form; described base plate (7) and column (8) form scanning probe device (3) backbone; realize that scanning probe device (3) is fixing; be installed in the below of conveying belt (23) under the coal bunker blanking port place; described x-ray source (1); high-frequency and high-voltage generator (2) and scanning probe device (3) form the testing hardware circuit part; realize the image data acquiring function; described explosion-proof wiring box (4); optical cable (5) and host computer (6) are realized tele-video transmission; test and analysis; CMOS probe unit (9) is housed in the described scanning probe device (3); analog switch (10); ADS8422 A/D converter (11); XC95144XL time schedule controller (12); Camera Link interface (13); CMOS probe unit (9) is arranged in an array; output voltage converts 16 digital signal to through analog switch (10) and ADS8422 A/D converter (11); the conversion work of XC95144XL time schedule controller (12) control simulation switch (10) and ADS8422 A/D converter (11); scanning probe device (3) shell adopts the aluminium protection; power supply (14) is housed in the described explosion-proof wiring box (4); Camera Link optic fiber converter (15); be installed on the wall of defeated coal main shaft belt tunnel; the power supply that be equipped with inside (14) by cable respectively with high-frequency and high-voltage generator (2); scanning probe device (3) connects; be system power supply; the Camera Link interface (13) that is equipped with in Camera Link optic fiber converter (15) and the scanning probe device (3) is housed in the explosion-proof wiring box (4) to be connected; realize gathering the picture signal conversion; realize the distant signal transmission function through optical cable (5); described host computer (6) adopts take the industrialization collection of America NI company and control system Compact RIO acquisition station as the basis; NI PCI-1426 image pick-up card (16) is housed; Labview image processing software (17); interface (18); display (19); keyboard (20) and mouse (21); utilize FPGA chip (22) as kernel; realize the realtime graphic signals collecting under the virtual instrument platform; computational analysis and memory function; host computer (6) is loaded on the conveying belt master-control room; described base plate (7) adopts length and width 400mm * 200mm; the steel plate of thickness 4-6mm; steel plate left hand edge and column (8) weld together; column (8) adopts the 2mm Plate Welding to become 30mm * 25mm * 900mm rectangle steel pole; and have the intermediate gap that screw is installed in vain; scanning probe device (3) is installed on the large frame of lower conveying belt (23); be screwed with column (8); by above-mentioned electric connection; scanning probe device (3) vertically is put in selected place, can finishes the data acquisition of conveying belt x-ray image; transmission and analysis.
2. according to a kind of steel rope core conveying belt on-line virtual testing claimed in claim 1 system, it is characterized in that described high-frequency and high-voltage generator (2) adopts the ZL200710050425.3 X ray high frequency high voltage generator for medical use diagnose to be used for the industry perspective as the signal source of x-ray source (1), guarantee the X ray waveform approximately constant direct current of x-ray source (1) output, the short time exposure; Frequency of operation: 30-40KHz, minimum exposure time: 1ms, and adopt the ZL200920256954.3 mining explosion-proof X-ray transmitting box, meet requirement of explosion proof.
3. according to a kind of steel rope core conveying belt on-line virtual testing claimed in claim 1 system, it is characterized in that described scanning probe device (3) adopts the STAR250 type black and white face battle array cmos detector of U.S. Cypress company, size: 244mm * 279mm * 33mm is according to the number of conveying belt width selection CMOS probe unit (9).
4. according to a kind of steel rope core conveying belt on-line virtual testing claimed in claim 1 system, it is characterized in that the described conveying belt corresponding CMOS probe unit of the widest 2.2m (9) is 10.
5. according to a kind of steel rope core conveying belt on-line virtual testing claimed in claim 1 system, it is characterized in that described explosion-proof wiring box (4) is installed on the wall of defeated coal main shaft belt tunnel through optical cable (5) and host computer (6) connection, receive the picture signal that scanning probe device (3) collects by Camera Link interface (13) simultaneously, RS485 interface (24) control XC95144XL time schedule controller (12) work on the Camera Link optic fiber converter (15) in the explosion-proof wiring box (4).
6. according to a kind of steel rope core conveying belt on-line virtual testing claimed in claim 1 system, it is characterized in that described host computer (6) is installed on the conveying belt master-control room, utilize NI PCI-1426 image pick-up card (16) high speed acquisition picture signal, image processing and analysis and evaluation algorithm among the Matlab are downloaded among the FPGA, in conjunction with Labview image processing software (17), carry out system's realtime graphic and analyze and process;
Its system's the key technical indexes:
Explosion-proof criteria: GB3836.4-2000 GB3836.2-2000
Power supply: aboveground: 220V 50Hz down-hole: 127V 50Hz
Maximum communication distance: 500m
Working temperature :-40 ℃-70 ℃
Test rate: 3000～4000mm/min
X ray greatest irradiation angle: 80 °
Conveying belt width: 0.6-2.2m
Imaging frame frequency: 30 frames/s
Imaging size :≤1mm
Conveying belt speed: 0-6m/s
Transmission loop: maximum 8 tunnel 16 bit digital quantity input.
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| CN 201110087038 CN102243189B (en) | 2011-03-31 | 2011-03-31 | On-line virtual testing system of steel cord conveyor belt |
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| CN 201110087038 CN102243189B (en) | 2011-03-31 | 2011-03-31 | On-line virtual testing system of steel cord conveyor belt |
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| CN102243189B true CN102243189B (en) | 2013-01-23 |
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| CN102937599B (en) * | 2012-10-25 | 2015-01-07 | 中国科学院自动化研究所 | Non-destructive testing systems and method used for detecting a metal-containing object through X-ray detection |
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| CN113686878B (en) * | 2021-09-03 | 2024-02-09 | 太原理工大学 | Multi-stage joint detection method and system for surface defects of special steel bar |
| CN113821019B (en) * | 2021-11-22 | 2022-03-04 | 成都市卫莱科技有限公司 | FPGA high-speed transceiver and dynamic control method thereof |
| CN117110330B (en) * | 2023-10-25 | 2024-01-30 | 山西慧达澳星科技有限公司 | Conveying belt flaw detection method, device, equipment and storage medium |
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