Inclination angle measurement apparatus

摘要

An inclination angle measurement apparatus includes a first ultrasonic sensor (3) for sending an ultrasonic wave toward a road surface (2), second and third ultrasonic sensors (4 and 5) each for receiving an ultrasonic wave reflected from the road surface (2), and a calculation control circuit (14) for calculating an angle of inclination of a vehicle with respect to the road surface (2) based on a phase difference between ultrasonic waves received by the second and third ultrasonic sensors (4 and 5). Thus the inclination angle measurement apparatus can accurately measure the angle of inclination of the vehicle with respect to the road surface (2).