CAR-SPEED SENSOR DEVICE FOR TRAVELING LOCATION DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a car-speed sensor for traveling location display device which can be easily attached. SOLUTION: A car-speed sensor device 50 is composed of a magnet unit 30 fixed to the wheel disk 42 of a wheel 41 and a magnetic sensor unit 49 which is attached to the supporting mechanism 48 of the wheel 41 and incorporated with a magnetic sensor 49 and detects the intensity of the magnetic flux from the magnet unit 30 with the magnetic sensor unit 49 and the speed of its own vehicle from the fluctuation of the intensity of the magnetic flux.