Proximity sensor used by an operation robot and method of operating the proximity sensor

摘要

Described is a proximity sensor used by an operation robot that may measure a proximity distance to an object using an ultrasonic wave in a device such as an operation robot, an endoscope, and the like, and a method of operating the proximity sensor which may be used by an operation robot. The proximity sensor used by the operation robot may include an inner wall provided in a circular structure to secure a cavity within the circular structure, a piezoelectric polymer film disposed outside the inner wall to generate an ultrasonic signal, and to sense the ultrasonic signal, and an outer wall disposed outside the piezoelectric polymer film to propagate the ultrasonic signal via an open window, thereby preventing a collision between devices or an unnecessary contact, and providing a more stable operation environment.