超声波热量表流量计算的新方法  

New Calculation Method of Flow Rate in Ultrasonic Heat Meter

作　　者：吴叶兰[1,2] 赵瑾[1] 黄亚楠[1] 陈红军 

机构地区：[1]北京工商大学计算机与信息工程学院,北京100048 [2]北京理工大学机械与车辆学院,北京100081 [3]北京淳堂科技有限公司,北京100081

出　　处：《仪表技术与传感器》2014年第12期31-32,74,共3页Instrument Technique and Sensor

基　　金：北京市属高等学校人才强教计划资助项目(PHR201108088)

摘　　要：在时差法超声波热量表的流量测量中,针对传统测量方法存在计算量大、测量复杂等问题,在线性回归算法和分段插值算法的基础上研究了一种新的计算流量的方法,实现了由时间差到流量值的直接计算,避免了流体分布不均和温度变化对流量测量精度的影响,使流量测量结果更接近真实值,提高了系统的稳定性和可靠性,对流量的精确测量具有一定的指导意义。In order to solve problems existing in the traditional flow rate measurement of time-difference ultrasonic heat meter such as large amount of calculations and complex measurements,we conducted a deep study on the linear regression algorithm and subsection interpolation algorithm and developed a new method to calculate flow rate, which was implemented directly by the meas- urement of time lag, and avoided the influence of uneven distribution of fluid and the change of temperature to the measurement ac- curacy. Tests show that the flow rate measurement results of heat meter based on this algorithm are closer to real value. There is no doubt that it has a certain guiding significance on the precise measurement of flow rate.

关 键 词：时差法 超声波热量表 流量计算 线性回归 分段插值 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]