Industrial Technology Research Institute

Shen-Tai Liaw

Chien-Rong Huang

An ultrasonic cleaning device fault detector, comprising an ultrasonic wave converter, an amplifier, a band-pass filter, and an integrator. The ultrasonic wave converter operates at the same central frequency as the ultrasonic cleaning device and is able to sense the intensity of ultrasonic waves generated by the ultrasonic cleaning device and to produce an analog signal therefrom. The amplifier amplifies the analog signal generated by the ultrasonic wave converter. The band-pass filter filters out noise in the analog signal, eliminating electric noise and other external noise that are sensed by the ultrasonic wave converter. The integrator converts the analog signal cleaned in the band-pass filter into an electric voltage digital signal output, thereby indicating whether the vibrating device of the ultrasonic cleaning device is working properly.

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Taipei, Taiwan

Shen-Tai Liaw