REVERBERATION ELIMINATING METHOD OF THE ULTRASONIC TRANSMITTING DRIVER

摘要

A reverberation eliminating method of an ultrasonic transmitting control device is provided to detect a signal returned from an object within a short time after transmitting the signal, when measuring a short distance by effectively removing a reverberation ultrasonic signal generated after a driving signal applied from a drive is finished, through an ultrasonic sensor. A reverberation eliminating method of an ultrasonic transmitting control device by using a driver(10) for generating driving pulse and an ultrasonic sensor(20) is composed of steps for making the driver output pulse corresponding to a first pulse width at normal voltage; delaying the output correspondent to a second pulse width; and removing an undesirable ultrasonic reverberation signal by generating reverse pulse corresponding to a third pulse width at normal voltage.