For large span manipulator,the traditional monitoring system exist the defect of angle blind spot.To solve this problem,the 3Dtechnology applied on the monitoring system of large span manipulator was researched. The method of using 3Dtechnology to enhance the monitor angle coverage was proposed.In this method,the simulation model of bridge inspection vehicle which has large span manipulator with the software of 3DStudio Max was built and OpenGL ES library was used to re-render the 3Dmodel on Android platfor...