Design of rotating table control for acquiring an image in industrial gamma-ray CT prototype using Raspberry Pi 3B+ module
Abstract
The rotating table on an industrial gamma-ray CT device is used to rotate the detector consisting of a line scanner and a gamma-ray source around the test object. The process of acquiring the image is done by rotating the detector and the source 360 degrees around the object, and at a certain angle, the object projection image is captured through the line scanner. A stepper motor is used to rotate the rotating table. The rotary motion of the stepper motor is controlled using the Raspberry Pi 3B+ control module which can be accessed remotely using the TCP/IP communication protocol. As an interface to control the motion of the rotating table, a software that is created using the python programming language is used. The gear ratio between the motor and the rotating table is 23 : 161 which takes 7 full rotations on the stepper motor to produce one full rotation on the rotating table. Based on the test results, 25200 pulses input is needed to rotate the rotating table 360 degrees, while one pulse is able to move the rotating table by 0.0143 degrees.
- Publication:
-
Journal of Physics Conference Series
- Pub Date:
- January 2020
- DOI:
- 10.1088/1742-6596/1436/1/012093
- Bibcode:
- 2020JPhCS1436a2093S