Patent ID: 7876198

Claim:
An adaptive intelligent electronic horn ( 100 ) includes a mechanical soniferous apparatus ( 112 ), an electromagnetic coil ( 106 ) set on a side of said mechanical soniferous apparatus ( 112 ), allowing the apparatus to sound, a driver circuit ( 104 ) connected electrically with said electromagnetic coil ( 106 ) for driving the coil, and an oscillating circuit; a sensor ( 110 ) is provided between said mechanical soniferous apparatus ( 112 ) and said oscillating circuit; an on-off ratio adjusting circuit ( 108 ) is provided at an input end of the oscillating circuit; the sensor ( 110 ) is used to measure the oscillation frequency of the mechanical ratio adjusting circuit and feedback the measured oscillation frequency signal to the oscillating circuit; the on-off ratio adjusting circuit ( 108 ) is used to control 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 ) is used to output 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 ).