基于GA-BP神经网络温漂补偿的十字正交型热温差式测风仪  

Cross-Orthogonal Thermal Temperature Difference Wind Meter Based on GA-BP Neural Network Temperature Drift Compensation

作　　者：刘洋[1,2] 行鸿彦[1,2] 侯天浩 LIU yang;XING Hongyan;HOU Tianhao(Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science&Technology,Nanjing 210044,China;Jiangsu Key Laboratory of Meteorological Observation and Information Processing,Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学,气象灾害预报预警与评估协同创新中心,南京210044 [2]南京信息工程大学,江苏省气象探测与信息处理重点实验室,南京210044

出　　处：《传感技术学报》2019年第12期1769-1774,共6页Chinese Journal of Sensors and Actuators

基　　金：国家重点研发计划项目(2018YFC1506102);国家自然科学基金项目(61671248,41605121);江苏省重点研发计划项目(BE2018719);江苏省“信息与通信工程”优势学科计划项目

摘　　要：为准确测量风速与风向,根据十字型导管内上下游温度差求得风速,通过正交分解得到二维空间内任意方向的风速以及风向角,设计了一种十字正交型热温差式测风仪。利用FLUENT软件对传感器周围的温度场分布进行仿真,搭建了测试平台,对不同环境温度、不同风速下测得的上下游温差数据进行拟合,且提出了一种利用遗传算法优化BP神经网络的算法补偿环境温度引起的测量误差。实测结果表明,十字正交型热温差式测风仪精度较高,在测风领域具有一定的应用价值。In order to measure wind velocity and direction accurately,this paper obtains the wind velocity in accordance with the temperature difference between the upstream and downstream of the cross conduit,and gains the wind velocity and the wind angle in arbitrary direction within two-dimensional space through the orthogonal decomposition,a cross orthogonal thermal temperature difference wind measuring instrument is designed.FLUENT software is used to simulate the temperature field distribution around the sensor and a test platform is built to fit the upstream and downstream temperature difference data measured under different environmental temperatures and wind velocities.In addition,an algorithm to optimize BP neural network by the genetic algorithm is proposed to compensate the measurement errors caused by the environmental temperature.The result of actual measurement indicates that the precision of cross orthogonal thermal temperature wind measuring instrument is relatively high and has certain application value in the field of wind measurement.

关 键 词：风速传感器 十字正交型测风仪 遗传算法 BP神经网络 温差 测量误差 

分 类 号：TH765[机械工程—仪器科学与技术]