Method and device for adjusting transmitting power of ultrasonic wave

The invention provides a method and device for adjusting transmitting power of ultrasonic wave and belongs to the technical field of mobile equipment. The method comprises of sending ultrasonic signal by the designated transmitting power through the ultrasonic wave sending device of the mobile equipment; receiving the reflected signal of the ultrasonic signal by the ultrasonic wave receiver of the mobile equipment; getting the difference value between the energy of the reflected signal and preset energy in accordance with the ultrasonic signal and the reflected signal; determining if the difference value is larger than the preset value. If the result is Yes, increasing the transmitting power of the ultrasonic signal. By sending ultrasonic signal by the designated transmitting power through the mobile equipment and monitoring the difference value between the energy and preset energy of reflected signal of the ultrasonic signal, real-time adjustment can be made to the transmitting power of the ultrasound signal in accordance with the difference value, thus ensure optimum ultrasonic function of the mobile equipment.