Speaker
Yi Tan
(Department of Engineering Physics)
Description
The noises of a tokamak during operations form the "voiceprint" of a tokamak. By installing a set of microphones in several optimized positions around the tokamak machine, most noises can be detected and can be used as the “voiceprint” of the tokamak for monitoring its status. Noises of a tokamak in discharge-ready status are mainly continuous and/or cyclical noises from pumping system, water cooling system, etc. We can define the noises of each system under normal operation status as a set of reference voiceprints and extract Mel frequency cepstral coefficient (MFCC) features from them. Then, if the real time MFCC spectrum of the noises detected differs from the reference MFCC spectrum, it means that the pumping system or something else is in an abnormal status. The voiceprint monitoring software will find and compare the difference with each MFCC features, give an alert to the operators, and specify the possible malfunctioning systems. The machine voiceprint monitor is easy to be deployed and doesn’t have any electrical or mechanical contacts with the existing machines. It is very convenient to use.
Co-author
Yi Tan
(Department of Engineering Physics, Tsinghua University, Beijing, China)
