Abstract
In this paper, we propose a new method for shape recognition of a pillar-like object using 1-D ultrasonic sensor array and GA. The proposed system consists of an ultrasonic transmitter, an ultrasonic sensor array, a signal processing unit, and a recognition unit. In the signal processing unit, the peak positions and their values, and the positions of the inflection points and their values. of ultrasonic waves that are outputted from the sensor array unit are acquired. These valnes and positions are inputted into the recognition unit, which consists of the GA, for object identification. We designed and built a prototype system, and we tested this system by attempting to identify six objects, each of which was a cylinder or a rectangular prism. The experimental results showed near-perfect object identification.
