轮箍表面荧光磁粉探伤系统-光学专业论文.docxVIP

轮箍表向荧光磁粉探伤系统Abstract 轮箍表向荧光磁粉探伤系统 Abstract Tile wheel band surface phosphor magnet powde,flaw detection system is new generation of industrial online flaw detection system，which has images collection based darkroom conditions．image processing．automatic detection of the flaw．The innovations of this system are the real-time online processing of CCD collecting images and real—time alerting of suspicious image．which provides examples for the flaw detection ot‘other metal surface．(steel．artilleoguns，etc．) Based CCD imaging，the operation principle and structure of the phosphor magnet powder flaw detection system of wheel band surface and the display system of computer image have been introduced in detail in this paper．The UV·spectrum，the excited spectrum of the phosphor magnet powder and the working waveband of CCD camera have been analyzed in this system，the type of ultraviolet source，CCD models work—band and parameters determined．This system Uses the 365mn ultraviolet of the largest spectral power system used for the 365nm and high-level testing pixels，high sensitivity CCD camera，In order to stop the visible light to shine the wheel band，We add glass filter in front of the ultraviolet source，which filter effectively smaller than the 300nm harmful ultraviolet rayand bigger than 420nm the useless visible light，also has the high transmissibility to the spectrum power more centralized 365nm ultraviolet light It enhances effectively overall system precision and sensitivity．In order to reduce the influence of the pseudo—flaw in the image，such the water drop，slash，surface pollution and SO 0n，and eliminate the light and the CCD camera vibration influence，we have designed set of image real—time processing and the examination software through researching and analyzing the image characteristic on the processing aspect of image．First，this software must carry；on smooth processing to the image．eliminate effectively noise and pseudo—flaw disturbance．Smooth processing causes the