Implementation Of Theodolite Servo Performance Test System Based On Simulation Video

As the speed increasing and more complex of the tracking target of thephotoelectric theodolite, the requirement of the servo units and the imageprocessing unit is getting higher and higher. So the servo performance tests oftheodolite are urgent problems which need to be solved quickly. In order to maintaintheodolite in a good technical condition when it participates in major tasks, atest technology based on simulation video was proposed, according to thecharacteristics and technical requirements of the tracking performance.The embedded systems combined with hardware and software was used toguarantee output video of real-time. Comparing with the traditional tracking testbased on dynamic target, the test technology based on simulation of video is closerto the test conditions and actual combat environment and easier to fit the field test.The test results have higher reliability.The basic principles of video injection test of the optical-electronic theodolitewere introduced and directions of data of the system were analyzed. The movingtarget which can reconstruct real trajectory was simulated by the module of videosimulation. The dynamic video which has little time delay is generated throughintegrating the moving target with real-time collecting background. Thecircuit which contains FPGA(core of control system), DM9000A, Camera Link, serial interface was researched and the PCB was designed. EmbeddedNios soft core using SOPC technology was constructed. Operation mode of registerHAL API were used to access to hardware resources. Software application of controlwas programmed. At last, data transmission and control of the system were realized.The pointed posture, trajectory and brightness property of the target can besimulated and the tracking performance of theodolite can be evaluated by the testingsystem. Experimental results indicate that the delay of the simulation video is2.68ms, comparing with the original video of the Theodolite. During the debuggingprogram of the theodolite, the root mean square error and the max error are obtained.