Probe for Determining the Surface Condition of Small Diameter Barrels

This thesis focuses on the analysis of methods for measuring surface profiles, as well as the design and implementation of a device for their measurement. The implemented device utilizes non-contact triangulation profilometry techniques to determine the surface profile by projecting a laser line onto the surface and capturing the projected shape at a non-zero observation angle. It alse collects information about the surface’s image texture under LED illumination. In addition to data on image texture and profile, data on the position of the captured images is also collected using a sensor measuring the device’s distance from the end of the barrel. The work also includes the design and implementation of custom control modules for the chosen LED and laser diode. The output from the device is presented in a user application. The device is designed to function in tubes with diameters from 40 millimeters