| 摘要 |
<p>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) is used to measure the oscillation frequency of the mechanical soniferous apparatus (112) and feedback the measured oscillation frequency signal to the oscillating circuit (102). 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).</p> |
