The Ultrasonic Based Distance Measurement System details the implementation of distance measurement system using the ultrasonic waves. The distance can be measured using pulse echo measurement method. The measurement unit uses the continuous signal in the transmission frequency range of ultrasonic transducers. The signal is transmitted by an ultrasonic transducer, reflected by an obstacle and received by another transducer, reflected by the obstacle and received by another transducer where the signal is detected. The time delay of the transmitted and received signal corresponded to the distance between the system and obstacles.