Research On Auto Testing System To Wheel-couples Of Railway Vehicles Used Fluorescent Magnetic

Fluorescent magnetic particle detection is a NDT method that often used for testing trivial flaws on the surface of ferromagnetic materials in order to control the qualities of product. Semiautomatic device for fluorescent magnetic particle detection has been largely used. But the flaws are recognized by manual work. There are masses of factors, which affect the testing, and the work condition is atrocious. So it is important to develop a system of fluorescent magnetic particle auto-detection devices. This paper mainly presents an auto-detection flaw testing system.The system is made up of hardware and software. Hardware includes computer, image sample board, image sensor (CCD) and circuit for driving and amplifying signal and so on. The function of hardware is to gather the image signal, transmit the signal into the computer, receive the instructions from the computer, and control the peripheral equipment. The core of the hardware is the image sample board, its function is to sample the image signal and then transfer the analog image signal into digital signal.At the end of this paper ,present some possible solution which improve the effect. At the same time, forecast the development of the fluorescent magnetic particle detection.