| Now the steel-cord belt conveyor is the important transport equipment of the coal mine, metallurgy, ports, large-scale chemical industry, iron and steel enterprises and water conservancy projects.It has the transport characteristics of high speed,long distance,heavy load and so on.However,the steel often has the troubles of rust, broken wires, wear and deformation because of the breakage adhesive tape rope.If the troubles can not be detected and deal with in time,once the steel-cord belt happen the accidents of joint break, serious economic losses and casualties will be caused.At present,the Nondestructive Testing methods,such as ultrasound,ray,magnetic particle, infiltration and eddy current,can test the deficiencies exist,and have high detection rate.But these methods can not solve the early diagnosis problem of fatigue fracture caused by the stress concentration. On the other hand, the traditional methods of NDT have the disadvantages of bulky equipment, labor-intensive,complicated operate,and high quality requirements of operator,and each method has its own limitation. Metal Magnetic Memory detection technology can accurately detect the stress concentration zone on the target. It is a new non-destructive testing (NDT) technique. It is important on early diagnostics of fatigue damages and evaluatuion of life time.In order to check the early injury problems and hidden troubles of the steel-cord belts reliably and sensitively.It has small lifr-off effects and do not need to magnetization and cleaning.The detection of the steel cord belt is essentially the detection of the wire rope. In the Introduction, through the summary of current methods of nondestructive testing, analyse the advantages and disadvantages of various methods of existing principles and testings.At this stage NDT method could do quantitave analysis but not do qualitative analysis.So it is the new direction of non-destructive testing.The second chapter is to study the structure of steel cord conveyor belt and the running mechanism.There are two steel cord conveyor belt,the structural differeences mainly in the availability of canvas.Steel cord conveyor belt running in a variety of occurs,focousing on the metal magnetic memory testing steel cord conveyor belt principle.The third chapter is to study the detection systems theory.Introduces the basic requirements meausured magnetic detection elements﹑ magnetic sorting﹑magnetic measurement probe signals in spatial samping﹑interpreation of magnetic signals in the form of classification and other basic knowledge.The topic chosen for the hall element magnetic detection elements.Chapter IV Design detection system. Steel cord conveyor belt detection system is mainly probe array signal acquisition and handling, upload. Hall element probe output voltage signal ,so its voltage signal amplification﹑filter sent to the LPC2368 own A/D acquisition.LPC2368 microcontroller system ,through the handing,storage,display last uploaded data to the PC. At the same time,LPC2368 microcontroller migration real-time operating systemμC / OS-II, the establishment of the task to facilitate future system changes and expansion.The fifth chapter is software system.Division of tasks,after transplant ucos-ii system. First to compltete the system,set up six task-level and design the tasks relationship,the task to draw a detailed flowed chart,the last complelet user applications.Chapter VI detection signal analysis.Uing the detection system of data collection on-site steel cord conveyor belt.Analysis the collected data.Steel cord conveyor belt now determine the status of running .
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