Ultrasonic Three Dimensional Scanner

Abstract Nowadays 3D scanner allows us to build accurate 3D digital structures in low-cost as well as in time effective manner. Digital 3-dimensional models can be constructed from the collected data. Hardware and Software assembly has been used to digitizing the objects. The developments of 3D ultrasonic scanning techniques are to be introduced in this paper. Analysis of the outer shape of object can be obtained by 3D ultrasonic scanning techniques. Any surface defect can be detected on the outer surface of object using this 3D scanner. Development board will be main component of this 3D scanner. Development board based on ATmega 2560 microcontroller is used for communication between sensor and interpretation of data. HC-SR04 Ultrasonic distance sensor is used in this scanner. HC-SR04 consists of two ultrasonic transducers. The Transmitter converts electrical signal into 40 KHz ultrasonic sound pulses. The receiver produces an output pulse when it detects reflected pulses. The time difference between transmitted and received pulse can be used to determine the distance. The sensor can measure distance between 2 cm to 400 cm with an accuracy of 3mm. Keywords: Microcontroller, 3D scan, Ultrasonic, Sensor interface