雨量采集的优化设计

翻斗式雨量传感器的大多数故障具有隐蔽性,现行的采集方法普遍容易忽略这个问题。为此介绍一种雨量采集的优化设计方法。从干簧管工作原理出发,分析雨量采集的异常原因,针对干簧管失效、双簧片吸合移位以及突发异常的零星雨量或高值雨量等问题,在总结现行的雨量采集方法缺点后,提出有效的解决方案,包括干簧管吸合脉宽诊断、雨量脉冲周期诊断、屏蔽电磁干扰措施以及一种新颖的基于趋势分析的干簧管常开状态诊断技术。实践证明,这些解决方案可行、有效,提高了雨量采集数据的可信度与准确度。

Optimized Design of Rainfall Acquisition

Most of tipping bucket rain sensor faults have the feature of concealment. An optimized method of rainfall acquisition is introduced. Based on the operational principles of reed switches, the analysis of the abnormity in rainfall acquisition and the summarization of shortcomings of the current rainfall acquisition are conducted, and effective solutions are proposed to solve such problems as the failure of reed switches, the shifting resulted from the pulling in of two reed switches, and the sudden abnormal fragmentary rainfall and heavy rainfall, etc. The solutions include the diagnosis of the pulse width in the reed switch pulling in, the periodic diagnosis of the pulses of rainfall, measures to screen electromagnetic interference, and a new technique for diagnosing the long opening state of reed switches based on the trend analysis. Practice shows that these solutions are feasible and efficient to improve the credibility and accuracy of rainfall acquisition data.