固态降水传感器现场核查装置技术研究
2023,31(7):305-312
摘要：针对气象观测台站固态降水传感器现场核查及测试的实际需求，研制了现场核查装置，结合砝码法实现了固态降水传感器的现场核查和测试；现场核查装置由基于ZigBee无线网络的数据获取装置和加重装置构成，数据获取装置具备环境气压、温度、相对湿度的实时检测能力，具备RS232、RS485及通断信号方式3种固态降水传感器接口的数据读取能力；加重装置由三角支架、OPD降水模拟器及砝码托盘组成，其中降水模拟器采用阻挡原有OPD降水发生探测器红外光束，人为给定指定频率脉冲信号的方法实现了降水的模拟，能够兼容多种型号的固态降水传感器；经实验测试，固态降水传感器能够准确识别加入其中的砝码重量，数据获取装置的3种接口数据读取准确度均达到100%；降水量测量值与理论值相关系数为0.9999；表明现场核查装置能够应用于固态降水传感器现场核查及测试业务。
关键词：固态降水传感器;降水发生探测器;降水模拟器;砝码法;现场核查;ZigBee
Research on Solid-state Precipitation Sensor"s Field Verification Device Technology
Abstract：According to the actual needs of on-site verification and testing of solid state precipitation sensors at meteorological observation stations, a on-site verification device was developed, and the on-site verification and testing of solid state precipitation sensors was realized by combining the weight method; The on-site verification device is composed of a data acquisition device and an weighting device based on ZigBee wireless network. The data acquisition device has the real-time detection ability of ambient air pressure, temperature, and relative humidity, and has the data reading ability of three solid-state precipitation sensor interfaces: RS232, RS485, and on-off signal mode; The weighting device is composed of a triangular bracket, an OPD precipitation simulator, and a weight tray. The precipitation simulator uses a method of blocking the infrared beam of the original OPD precipitation generation detector and artificially giving a specified frequency pulse signal to achieve precipitation simulation, which is compatible with various types of solid-state precipitation sensors; Through experimental testing, the solid-state precipitation sensor can accurately identify the weight added to it, and the data reading accuracy of the three interfaces of the data acquisition device reaches 100%; The correlation coefficient between the measured precipitation value and the theoretical value is 0.9999; This indicates that the on-site verification device can be applied to the on-site verification and testing business of solid-state precipitation sensors.
Key words：solid-state precipitation sensor; precipitation occurrence detector; precipitation simulator; weight method; field verification; ZigBee
收稿日期：2023-02-28
基金项目：内蒙古自治区气象局科技创新项目基金(nmqxkjcx202327)、内蒙古自治区大气探测技术保障中心科技项目基金(nmdqtckjcx202201)
