OBSTACLE DETECTION DEVICE

摘要

An obstacle detection device includes an air-coupled ultrasonic wave sensor 2 mounted into a penetrating hole 11 of a mounting member 1 with an emitting surface 21a being oriented towards outside the obstacle detection device, and an acoustic matching layer 3 fixed to the emitting surface 21a, to achieve matching between the acoustic impedance of the air-coupled ultrasonic wave sensor 2 and that of the air, in which microcapsules 31 are added to the same material as that of the mounting member 1.

主权项

1. An obstacle detection device comprising:
an air-coupled ultrasonic wave sensor having an ultrasonic transducer on an inner side of a bottom surface of a metallic case, and an emitting surface on an outer side of the bottom surface of said metallic case; and an acoustic matching layer placed and mounted in such a way that a surface thereof is fixed to said emitting surface and another surface thereof is exposed to outside said obstacle detection device via a penetrating hole of a mounting member, in which microcapsules are added to a material which is same as that of said mounting member.