A customer approached us with the need for a system to record falling gravel. What sounds easy in the beginning is not that easy due to the demanding rough environment.
Our solution is based on a 5MP monochrome camera, integrated in a IP67 housing, flanked by two customized pvLight LED panels on each side, to provide enough light to record the stones in movement. To protect the illumination from damage they are covered with plexiglass.
Recording is started through a trigger and images are taken when the gravel passes the camera.