Surface mapping using ultrasound technique for object visualisation

This paper analyses the concept of developing a PC-based system, which uses ultrasound transducers and a mechanical arrangement that moves the object under test with respect to the sensor in such a way that distance information at various points of the object from the transmitter can be obtained. The transducer is connected to a mechanical device that moves the transducer in a precise, pre-defined manner. Ultrasound image time of flight data is acquired at known spatial intervals. In this system a stepper motor rotates the test object for a particular angle while the other stepper moves the sensor in the Y direction to obtain the distance information about the object. The information obtained is used to perform surface modeling, determine target localisation and visualise the shape of the object.