Adaptive intelligent electronic horn

Details Adaptive intelligent electronic horn Adaptive intelligent electronic horn

2011-01-25

2011-01-25

Nguyen, Tai T (Department: 2612)

Communications: electrical

Audible indication

Electronic

C340S384100, C340S384730, C340S388100, C340S384400, C166S137000, C166S142000, C331S173000, C331S17700V

Reexamination Certificate

active

07876198

ABSTRACT:
An adaptive intelligent electronic horn (100) comprises a mechanical soniferous apparatus (112), an electromagnetic coil (106), a driver circuit (104) and an oscillating circuit (102). A sensor (110) is provided between the mechanical soniferous apparatus (112) and the oscillating circuit (102). An on-off ratio adjusting circuit (108) is provided at the input end of the oscillating circuit (102). The sensor (110) measures the oscillation frequency of the mechanical soniferous apparatus (112) and feedbacks the measured oscillation frequency signal to the oscillating circuit (102). The on-off ratio adjusting circuit (108) controls a pulse width of an oscillation signal from the oscillating circuit (102) based on a voltage of power supply and/or an ambient temperature. The oscillating circuit (102) outputs corresponding oscillation signal to the driver circuit (104) based on the oscillation frequency signal received from the sensor (110) and/or the control signal from the on-off ratio adjusting circuit (108).

REFERENCES:
patent: 6211774 (2001-04-01), Steiner
patent: 6456193 (2002-09-01), Wan

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