摘要
为了解决水情复杂情况下流速测量的复杂性和准确性问题,设计了一款非接触式电波流速仪。能实现水面流速快速准确的测量。本设计应用雷达传感器接收发送电磁波,计算合成频率差(称为雷达中频信号)。通过对雷达中频信号进行硬件滤波和软件数字滤波消除杂波干扰。再由谱估计法提取雷达中频信号频率。最后根据雷达中频信号与水面流速的关系实现对水面流速精确的测量。该设计经过实地测试,仪器运行良好能够准确地测量水面流速。充分证明了系统可行性和稳定性,说明该仪器能够达到设计要求。
To solve the problem of complexity and accuracy of complex hydrological situation under flow measurement,a non-contact electric wave current meter is designed.The flow rate of water to achieve rapid and accurate measurement.The design and application of radar sensors transmitting and receiving electromagnetic waves,the frequency difference calculation synthesis（called radar IF signal）.Through the radar IF signal filtering hardware and software digital filtering to eliminate clutter.And then extracted by the spectral estimation method radar IF signal frequency.Finally,the water flow rate to achieve accurate measurements based on the relationship radar IF signal and the water flow rate.The design has been field tested equipment running well able to accurately measure the water flow rate.Fully proved the feasibility and stability of the system,indicating that the instrument can meet the design requirements.
作者
温宗周
袁妮妮
刘超
费腾蛟
赵建新
Wen Zongzhou Yuan Nini Liu Chao Fei Tengjiao Zhao Jianxin(College of Eleetronies ＆ Information,Xi＇an Polytechnic University,Xi＇an 710048,China)
出处
《电子测量技术》
2016年第12期128-131,144,共5页
Electronic Measurement Technology
关键词
电波流速仪
雷达传感器
自适应滤波器
谱估计法
electric wave flow meter
radar sensor
self-adapting filter
spectral estimation
