两套流量自动化测量系统的工程应用

摘要

针对安全监测领域中的大流量和小流量自动化测量问题，通过环境适应性和信号采集可靠性两方面的比较得出选择小流量自动化测量传感器要重点考虑的内容以及机械式微浮子水位计在自动化测量方面的优点。针对大流量自动化测量过程中使用较多的 H-ADCP 流量计，本文分析了测量过程中误差的主要来源及环境适应能力，通过安装在渠底，使其与水平面和垂直面均成一定夹角的安装方式，可以获得更为齐全的流速点数据，也能适应水位变幅大，变化频繁的天然河流和渠道，可以提高大流量自动化测量的精度。%For the problem of automatic flow measurement in large capacity and small capacity flow,This paper compared the environmental adaptability and the reliability of the signal collect in the automatic sensor choosing in small capacity flow meas-urement,and analysed the merits of the mechanical micro float gauge .In the large capacity flow measurement,this paper ana-lysed the error and environmental adaptability in using H-ADCP,by the way of changing the install mode and installing the sensor on the bottom of channel and sloping in horizon plane and vertical plane,the system can obtain more wide-ranging data of the speed points and can be used in the natural river and channel which water level change quickly,the measurement accuracy or the large capacity flow was improved.