STRUCTURED LIGHT BASED WHEEL MULTIPLE PARAMETER ONLINE MEASUREMENT SYSTEM AND MEASUREMENT METHOD THEREOF

摘要

The invention relates to an online measurement system for multiple parameters of a wheel based on structured light. The measurement system comprises a wheel sensor (10), a first wheel online measurement device (20) and a secondwheel online measurement device (30), and is characterized in that both the first wheel (20) online measurement device and the second wheel online measurement device (30) comprise a tread structured light unit (21), a profile structured light unit (22) and a two-dimensional image sensor (23). The tread structured light unit (21) and the profile structured light unit (22) project a profile contour curve and a tread contour curve on the wheel, the two-dimensional image sensor (23) takes images, three-dimensional reconstruction is performed on the images to obtain tread contour information and profile contour information, and the wheel diameter, the wheel flange height and the wheel flange thickness are acquired according to the obtained contour information. The online measurement system is high in reliability and measurement accuracy, and reduces influences of the external ambient light. The online measurement system can also solve the wheel diameter according to two profile structure light contour fitting circles on the same circle, so that precise positioning for the wheel is not required.