A Method to Detect Object's Width with Ultrasonic Sensor

In this research the focus is on detecting multiple objects with an ultrasonic sensor in a dark environment where video or snapshot from a camera is not possible. The problem is to differentiate objects placed in close vicinity of each other and to calculate the width of the objects or the width of a gap between objects placed next to each other. A method is devised to tackle the problem of differentiating the objects. Results of experiments are presented using an Ardiuno microcontroller with an ultrasonic sensor mounted on a motor.