基于压电效应的FPGA降水粒子测量系统设计  

Design of FPGA precipitation particle measurement system based on piezoelectric effect

作　　者：刘清惓[1,2] 朱俊丰[1,2] 杜虹[1,2] 郭薇[1,2] 韩上邦 王勋涛[1,2] 

机构地区：[1]江苏省气象探测与信息处理重点实验室,江苏南京210044 [2]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《传感器与微系统》2014年第3期85-88,共4页Transducer and Microsystem Technologies

基　　金：国家公益性行业(气象)科研专项项目(GYHY200906037;GYHY201106048);国家自然科学基金资助项目(41075026;41275042);江苏高校优势学科建设工程项目(传感网与现代气象装备);江苏省科技支撑计划重点资助项目(BE2011006)

摘　　要：降水粒子测量是气象观测要素中重要的组成部分。提出了一种基于压电传感器的新型感测方法,并依此设计了一种基于现场可编程门阵列(FPGA)的降水粒子信号采集处理系统。该系统对信号进行多路同步采集,并利用拟合所得的各路系统响应函数与各粒子响应函数实现对粒子的测量。系统实现信号全量程采集的同时有效降低了非线性误差。实验结果表明:该系统对于粒子直径观测误差小于±0.1 mm,具有量程宽、精度高、响应快、粒子判别准确等特点。Precipitation particle measurement is an important section in meteorological observation.Propose a new method of measurement,which is based on piezoelectric sensor,and a kind of FPGA-based precipitation particle signal acquisition and processing system is designed.This system acquires signal through synchronized multi- channel,and use response function of each channel system and response function of each particle obtained by fitting to realize measurement on particle.The system not only realizes full scale acquisition but also effectively reduces nonlinear error.Experimental results indicate that observation error of the system on particle diameter is less than ± 0.1 mm and it has features of wide scale,high precision,fast response and accurate particle discrimination.

关 键 词：降水粒子 压电传感器 现场可编程门阵列 同步数据采集 

分 类 号：P412.13[天文地球—大气科学及气象学]