Laser scanner flaw detection system using baseline follower signal processing

摘要: The output of the detector a laser scanner flaw detection system is processed to treat changes therein which are not related flaws. Detector applied baseline extractor providing moving average signal fed with in one mode differential circuit producing difference discriminator. In an alternative mode, directly coupled threshold Signals from or passed by discriminator if they exceed predetermined provide output. A clamp also provided for removing ambient light on signal.