초음파 센서의 하우징 구조에 따른 진동 및 음향 특성

초록

This paper deals with the vibration and acoustic characteristics of ultrasonic sensors for distancemeasurement according to the housing structure. To magnify the distance range, it is necessary to increasethe vibration magnitude of the vibrating plate of the ultrasonic sensor. We consider the modificationsof axisymmetric housing, its thickness, and boundary of the plate and cylinder wall. Wecompare the characteristics of the modified housing structures by the finite elements analyses of vibrationand acoustics. The flexibly-modified boundary of the vibrating plate allows a larger vibrationand sound pressure along the distance. We identified the sensor structure of the larger ultrasoundpower for the given input signal.