基于TDC-GP22的超声波测风仪设计Design of ultrasonic anemoscope based on TDC-GP22
邢玉品,陈晓
摘要(Abstract)：
为了解决现有超声波测风仪测量精度小、电路设计复杂、霜雪等恶劣天气测量误差大等问题,设计一款基于TDC-GP22的高精度超声波风速风向测量仪,时间测量精度可以达到22 ps,采用小波阈值降噪法处理测量数据有效地剔除电磁干扰、空气中固体颗粒对信号的反射等测量误差。给出以STM32F407和TDC-GP22为核心控制芯片的系统总体框架设计,详细论述超声波驱动发射、高精度时间差测量、信号调理、探头自动加热、数据去噪的具体实现过程。测试结果表明,该系统的测量精度和可靠性满足要求。
关键词(KeyWords)： 超声波;高精度;TDC-GP22;风速;风向;小波阈值降噪
基金项目(Foundation): 江苏省第十一批“六大人才高峰”高层次人才项目;; 江苏省自然科学基金(BK20161536);; 江苏高校优势学科Ⅱ期建设工程资助项目~~
作者(Author): 邢玉品,陈晓
DOI: 10.16652/j.issn.1004-373x.2018.21.029
参考文献(References)：
- [1]曹可劲,崔国恒,朱银兵.超声波风速仪理论建模与分析[J].声学与电子工程,2010(1):37-40.CAO Kejin,CUI Guoheng,ZHU Yinbing. Theoretical modeling and analysis of ultrasonic anemometer[J]. Acoustics&electronic engineering,2010(1):37-40.
- [2]丁向辉,李平.基于FPGA和DSP的风速风向测量系统[J].应用声学,2011(1):46-50.DING Xianghui,LI Ping. Wind-speed and wind direction measurement system based on FPGA and DSP[J]. Applied acoustics,2011(1):46-50.
- [3]李世光,刘超,白星振,等.基于TDC-GP22的超声波热量表设计[J].传感器与微系统,2015(8):83-86.LI Shiguang,LIU Chao,BAI Xingzhen,et al. Ultrasonic heat meter design based on TDC-GP22[J]. Sensors and microsystems,2015(8):83-86.
- [4]田海军,刘炜明,刘炜正,等.基于时差法和TDC-GP22在高精度超声波热量表中的应用[J].仪表技术与传感器,2017(4):34-37.TIAN Haijun,LIU Weiming,LIU Weizheng,et al. Application of time difference method and TDC-GP22 in high precision ultrasonic heat meter[J]. Instrument technique and sensor,2017(4):34-37.
- [5]王慧.时差法超声波流量计数据处理方法的研究[D].大连:大连理工大学,2010.WANG Hui. Research on data processing method of time difference method ultrasonic flowmeter[D]. Dalian:Dalian University of Technology,2010.
- [6]金晶,唐慧强.基于ARM的超声波风速测量系统[J].仪表技术与传感器,2009(6):101-106.JIN Jing,TANG Huiqiang. Design of ultrasonic wind velocity measurement system based on ARM[J]. Instrument technique and sensor,2009(6):101-106.
- [7]梅彦平,张明君,王延平,等.TDC-GP21在超声波热量表中的应用[J].仪表技术与传感器,2012(2):37-39.MEI Yanping,ZHANG Mingjun,WANG Yanping,et al. Application of TDC-GP21 in ultrasonic heat meter[J]. Instrument technique and sensor,2012(2):37-39.
- [8]金松日,唐祯安,陈毅.TDC-GP21在超声波传播时间测量中的应用[J].仪表技术与传感器,2013(6):98-101.JIN Songri,TANG Zhen’an,CHEN Yi. Application of TDCGP21 in ultrasonic propagation time measurement[J]. Instrument technique and sensor,2013(6):98-101.
- [9]吕瑞兰.小波阈值去噪的性能分析及基于能量元的小波阈值去噪方法研究[D].杭州:浙江大学,2003.LüRuilan. Performance analysis of wavelet threshold denoising and wavelet threshold denoising method based on energy element[D]. Hangzhou:Zhejiang University,2003.
- [10]潘泉,张磊,孟晋丽,等.小波滤波方法及应用[M].北京:清华大学出版社,2005.PAN Quan,ZHANG Lei,MENG Jinli,et al. Wavelet filtering method and application[M]. Beijing:Tsinghua University Press,2005.