APPLICATION

In this experiment we were assigned a task of reviewing a patent on Distance measurement so i chose "DISTANCE MEASUREING SYSTEM" patent.This patent is about a distance measuring system includes a device for detecting ringing signals (false echoes) generated by ultrasonic transducers used to generate probe signals and detect echoes of the probe signals to determine the distance of an external object from the measurement system.A particularly stressful environment in which distance measuring systems are used is that of motor vehicle applications. Despite inaccuracy caused by vibration and other environmental factors, the need for such devices is substantial, and distance measuring systems are used. The absence or duration of ringing signals are determined, and the display of the distance measuring system is operated accordingly. False indications of distance measurements are limited by storing a number of distance measurements in a memory, and selecting the measurement most likely to indicate the presence of an object from which the distance on measuring system is determined. This system relates generally to electronic distance measuring systems and, more specifically, to an ultrasonic distance measuring system arranged to minimize errors caused by ringing and environmental stress