自动气象站防雷电源切换器的设计开发

自动气象站设备经常被从交流电源线路感应进来的雷击而造成损坏，目前安装的各种防避雷器还不能完全有效防止该现象的发生。如果能用两组蓄电池，交替给设备供电，就能将交流电源与设备隔离，起到防止电源线感应来的雷电击毁设备的事故。设计开发的防雷电源切换器通过检测蓄电池的供电电压，控制两微型电机的正反转，再经电机的传动装置，带动接点移动，达到两组蓄电池交替供电和充电。调整电机的走动行程，可使充电器与设备的间距达到8~10 cm，起到了电源防雷的目的。

Design and Development of a Lightning Protection Power Switch for Automatic Weather Stations

The electrical equipments in automatic weather stations are often stricken and damaged by lightning strokes inducted from AC power lines, and various currently installed lightning arresters cannot effectively prevent the occurrence of the like events. A newly designed and developed lightning protection power switch is introduced, which can isolate electronic equipment from alternating current, uses two groups of storage batteries alternately to supply electric power. The switch detects the battery’s supplying voltage and controls the rotation direction of two micro motors. Through the motors’ transmission devices, the contact point can be shifted. Consequently the two groups of storage batteries can alternately supply power and be recharged. By adjusting the motor’s stroke, the distance between charger and equipment can be 8 cm to 10 cm, and the isolation between power and equipment devices is archived. The lightning inducted accidents and damages through AC power lines can be prevented.