超音波フェーズドアレイ装置のための音響管形状の改良

―角度分解能向上のための検討―

抄録

An ultrasonic sensor for localization and mapping of an indoor human support robot is being developed by the authors. Previous studies have implemented an ultrasonic phased array based scanning system by using a specialized acoustic tube. To improve the performance of the system, the study is currently focused on the shape of the acoustic tube exit. Tests using a single transducer acoustic tube was developed and different exit shapes were tested. In this paper, the horizontal and vertical directivity of the different exit shapes is presented with a proposed phased array directivity calculation method.