Patent ID: 8751196
Filing Date: 2014-06-10
Classification: A61K,A61Q,C03C,H01J,H01L

Abstract:
1. An abnormality detection system of detecting abnormality occurring in a processing apparatus in which acoustic emission (AE) as noise may be mixed into AE generated from an abnormality detection target, characterized by comprising: a plurality of ultrasonic sensors for detecting acoustic emission generated in the processing apparatus; a distributing unit configured to distribute each output signal of the plurality of ultrasonic sensors to a first signal and a second signal; a trigger generating unit configured to generate a trigger signal when a predetermined feature is detected by sampling the first signal at a first frequency; a trigger generation time determining unit configured to determine a trigger generation time by receiving the trigger signal; a data making unit configured to make sampling data by sampling the second signal at a second frequency higher than the first frequency; and a data processing unit configured to analyze the abnormality occurring in the processing apparatus by performing a waveform analysis of data corresponding to a predetermined period based on the trigger generation time determined by the trigger generation time determining unit among the sampling data.