抄録
We are developing a mobile robot which can follow the target person using ultrasonic transponder. The ultrasonic transponder can extend the measurable distance. Also, it can measure the distance only to a specific object. In report, we show the sensor system and some experimental results using the system. First, accuracy of the measurement using the ultrasonic transducers which have different center frequency is tested. Second, measurable distance is investigated in several height conditions between the sensor and the floor.
