False start warning system and obstacle detection device

摘要

PROBLEM TO BE SOLVED: To prevent erroneous start by combining an ultrasonic sensor and a navigation device.SOLUTION: An erroneous start warning system comprises: a navigation device 20 which determines the travel direction of an own vehicle with respect to obstacles (building, river and the like) of a parking area on the basis of map information, positional information and azimuth information of the own vehicle, and outputs it as vehicle direction information; ultrasonic sensors 101-108 which detect front and rear obstacles of the own vehicle; a sensor C/U 1 which controls the detection direction or sensitivity of the ultrasonic sensors 101-108 in accordance with vehicle direction information acquired from the navigation device 20; and a display part 27 and a sound output part 29 which output warning when the ultrasonic sensors 101-108 detect the obstacles.