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《Journal of Beijing University of Aeronautics and Astronautics》 2007-09
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Development of optoelectronic planar position system used to measuring position and attitude of the large construction

Wang Guodong Li Yunhua Li Chao(School of Automation Science and Electrical Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China)  
The characteristics of now used push-bridge construction system were analyzed, and the main disadvantages of the construction system were pointed out.Aimed at those problems,a new planar position system was developed,which was composed of laser beam,photoelectric target and MCU based data acquisition system.The layout of the optoelectronic components on the optoelectronic target was optimized by the genetic algorithm.In order to test the system,a set of serial communication software was developed.There are two achievements of the optimizing.The first is that the dense in the central and sparse in the edge layout on the target is fit for control system,and the second is that the interface circuits were reduced from 144 sets to nearly 10 sets.The test result of the whole system shows that the measure range is about 200mm×100mm,the position precision is 5mm,ant the sampling time is 20ms.It can real-timely measure an object on-line which moves on a plane,and the system is adopted to be applied to the automatic control in construction projects.
【Fund】: 北京市自然科学基金资助项目(3052011)
【CateGory Index】: TP274
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