摘要
地面观测场往往处于空旷地区,风传感器又安装在观测场10m以上空中,容易遭受雷击而损坏。若受损的风向传感器就此弃之,造成极大浪费。我们根据实物绘制了风向传感器的电路原理图,结合原理图分析了风向传感器的工作原理,并设计了格雷码检测电路。通过7个发光二极管能方便、直观的判断7位格雷码中是哪位出现问题,从而结合电路查找故障点及有关元件,提出了在没有专业工具的情况下,如何拆卸及焊接贴片芯片的简便易行的方法。通过几例检修实例,进一步说明分析故障原因及检修方法。
The observation sites generally located in open areas,and wind sensors are installed at the altitude of 10 meters,so it is easily damaged by lightning.The circuit diagram is drawn according to the wind direction sensor,and the working principles are analyzed.A gray code detection circuit is designed,which can conveniently and intuitively identify the failure bit in the 7-bit LEDs,so to find the reason and related components for failure.A simple method of replacing patch chips,in case of no special tool,is introduced,and some examples are given.
出处
《气象科技》
北大核心
2015年第1期168-171,共4页
Meteorological Science and Technology
关键词
电路原理
故障分析
检测方法
circuit principle
fault analysis
test method
