Abstract
It is thought that it is effective to measure the change in the tilt-angle and the change in the intrinsic period for evaluation of structure. The field test with the bridge was executed by using a combined tilt-angle and acceleration sensor, and the control panel that had been developed this time. It is thought that the measurement of a steady tilt-angle and the measurement of the intrinsic period by the acceleration are possible as a result of the test.
