TECHNIQUES FOR PROVIDING A BROAD BAND ULTRASONIC TRANSDUCER DEVICE USING A PLURALITY OF NARROW BAND TRANSDUCER ARRAYS AND A METHOD OF WILDLIFE DETERRENCE USING SAME
NOSTRAND THOMAS J,SPIEGEL CODY,WILLIAMS DALE E,ZHU JUNDA
申请号：
IN201817015473
公开号：
IN201817015473A
申请日:
2018.04.24
申请国别(地区):
IN
年份:
2018
代理人:
摘要：
A broadband ultrasonic transducer device (UTD) is disclosed that utilizes a plurality of narrow band piezo electric elements grouped into single frequency sub arrays to provide a relatively simple highly reliable deterrent unit (DU) capable of emitting ultrasonic energy over a wide coverage area and at a sound pressure level that meets or exceeds other DU approaches. In an embodiment the broadband UTD includes a housing portion configured to couple to a plurality of piezo sub array plates. Each piezo sub array plate includes a plurality of pockets or cavities to receive respective narrow band (e.g. 1 3kHz) piezo electro transducer elements with characteristics e.g. geometries and material composition that cause each to emit ultrasonic energy at a particular resonant frequency. A controller of the UTD implements a control scheme to emit ultrasonic energy in a plurality of output modes including a white noise node and a single frequency mode for deterrence applications.
