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    • 20. 发明专利
    • SPEED LIMITING DEVICE
    • JPH02153235A
    • 1990-06-12
    • JP21503088
    • 1988-08-31
    • YAMAHA MOTOR CO LTD
    • TAKASUGI KAZUHIDEHAYASHI NORIO
    • G01P1/07B60K31/18F02D29/02F02D41/22G01P1/10
    • PURPOSE:To aim at the compactization by providing a photocoupler for detecting the warning speed and the maximum limiting speed and a magnetic lead switch for dividing the speed range in multiple stages and for detecting it as speed sensors, and operating a vehicle decelerating means on the basis of the combination of these output. CONSTITUTION:A photocoupler 1 made of a semiconductor switch and an electro magnetic lead switch 2 are provided as speed sensors, and a combination type photocoupler for detecting the warning speed and the maximum limiting speed with one shielding plate is used. The electro magnetic lead switch 2 is formed so that the speed range from the speed 0 to the high speed range is divided to multiple stages of the speed range to be detected. After the waveform shaping of the detected signal of the both speed sensors 1, 2, the detected signal is input to a microcomputer 4 of a CDI (voltage applying type ignition system) unit II. When the microcomputer detects that the speed exceeds the maximum limiting speed from the combination signal of these detected signal, the voltage is interruptedly applied to the gate of a thyristor 9 to protect the charge to a capacitor 8, and a sparking plug 11 is ignited so as to decelerate a vehicle.