自动气象站风向传感器维护检测方法探讨

摘要

当前自动气象站使用的风向传感器大多数是格雷码盘式风向传感器,目前河北省新型站有两种型号DZZ4型和DZZ5型,使用的风向传感器输出方式均为格雷码,但两种型号供电方式不同,出现故障时实际检测的错误方位示值也就不同,根据格雷码盘式风向传感器的风向值对应码的编码原理和规律,总结两种型号使用的风向传感器故障时错误方位示值规律,实现风向传感器现场维护时快速检测,方法简单,对于单一格雷码故障判别较方便,更加适合于台站级维护,尤其对于一般现场维修工作人员,在没有检测设备和仪器的情况下判断风向故障点很有效.%Most automatic weather stations use a Gray code disc wind direction sensor,and in the new stations in Hebei Province,there are two types of wind direction sensors (DZZ4 and DZZ5),and the Gray code is used as the output mode of thses direction sensors,but the two models have different power supply modes,and the indications of error directions when failures are actually detected are different.According to the wind coding principles of values corresponding to the codes for Gray code disc wind-direction sensors,the regularity of wind sensor error direction indication values are studied.The method can be used to realize the quick detection of direction sensor on-site maintenance,which is simple,especially for single Gray fault identification,convenient,and more suitable for station-level maintenance,especially for the general on-site repair in the absence of testing equipment and instruments.