Abstract
Many infrastructures like bridges and tunnels had been constructed during the steep economic growth age. In Japan, degradation of those infrastructures becomes a problem. Recently, using robots for the bridge inspection attracts attention. Checking using robots can cut cost. But area of the damage can't be identified, just look at photos of a damage part. Therefore, position estimation system for robots is very important. We have created position estimation system for robots by using speakers and a microphone. In addition, practical utility of one dimension has been confirmed. In this study, we have mounted a microphone on the robot and this system has estimated the position of the robot. The practical utility of this system was confirmed.
