Development Of Wireless Control System For The Components Of Lidar

Upper atmosphere detection lidar provides a large amount of basic data for the study of climate change and atmospheric models,which greatly promotes the research of atmospheric science and space science by domestic and foreign scholars.With the advancement and construction of the Meridian Project,a detection network has been formed.However,this detection system involves many experimental instruments,and they all use manual wired contorl,which not only leads to complicated laboratory wiring and difficult management,but also causes a waste of resources.To meet the optimization and transformation requirements of Yanqing-Beijing Lidar of the Meridian Project,the corresponding wireless control systems have been developed for the water cooler,the skylight,and the photomultiplier,and tested functions without affecting their normal running.The detail works are as follows:(1)Design of control scheme.According to the current situation of the equipments in Beijing Yanqing Lidar Laboratory and requirements of observation,the wireless control scheme was designed based on LAN for the lack of manual wired operation.(2)Reconstruction of control circuit.In this paper,the PLC has been used as the main controller with Wi Fi module and touch screen.The wireless control circuits were respectively reconstructed for the water cooler,the skylight,and the photomultiplier.(3)Programming of control software.The water cooler and the skylight adopt Wi Fi to realize the wireless communication between their terminal software and the main controller.The photomultiplier adopts Wi Fi serial touch screen to realize the wireless communication.Finally,the operation softwares were developed for the three components by socket programming.(4)Installing and debugging.Two control instruments for the different skylights and a set of control instrument for the photomultiplier have been designed and assembled.The circuit of the water cooler was also reformed.Each of these control systems working at the Meridian Project has passed the system function test with a good performance and achieved the goal.The control technology and circuit transformation scheme involved in the thesis will provide technical reference of wireless control for the same type of large scientific research equipment.