| 摘要 |
PURPOSE: A guide system prevents a driver from dozing off while driving by generating alarming sound. CONSTITUTION: A guidance system comprises a clock signal generator(10), a standard time generator(20), a drowsiness sensor(30) and a guiding signal generator(40). The clock signal generator(10) counts time passed after driving and outputs a signal corresponding thereto. The standard time generator(20) outputs measuring time unit which becomes shorter by degree according to the signal. The drowsiness sensor(30) outputs a control signal for generating a guiding signal when a vocal sound of a driver is not inputted during the measuring time unit. The guiding signal generator(40) generates the guiding signal according to the control signal so that the driver hears a sound generated by a speaker according to the guiding signal.
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