组合式流量在线监测系统在变动回水断面的应用

Application of Combined On-line Flow Monitoring System in Variable Backwater Section

为解决低流速、受变动回水影响等较复杂监测环境下的流量在线监测问题,依据声学多普勒频移及雷达波测速的方法原理,结合新运粮河入滇池口监测断面复杂的水文监测条件实际,采用非接触式雷达波传感器与接触式水平ADCP传感器组合成一套完整的在线流量监测系统,实现河流水表面流速和水下指标流速的同步实时数据采集,再将同步采集的水表面流速和水下指标流速同时输入模型模拟监测断面流场、流速分布,再计算实时流量后,通过GPRS信道传送到中心站服务器,对数据进行分析处理、存储、转录、发布,实现WEB、手机APP远程实时流量、工作状态等查询功能。经近一年的运行,系统正常稳定。

In order to solve the problem of on-line flow monitoring in the complex environments such as low flow rate and fluctuating backwater,the non-contact radar wave sensor and contact type horizontal ADCP sensor were combined into a complete on-line flow monitoring system based on the principle of acoustic Doppler frequency shift and radar wave velocimetry,according to the complex hydrologic monitoring condition in the monitoring section of the new Yunliang River into the Dianchi estuary,so that the simultaneous real-time data acquisition of river water surface velocity and underwater target velocity was realized.Then,the synchronized water surface velocity and the underwater index velocity were simultaneously input into the model to simulate the flow field and velocity distribution.After the real-time flow had been calculated,which was transferred to the central station server through the GPRS channel,the data were analyzed,processed,stored,transcribed and released,so as to achieve the functions of inquiring the remote and real-time flow,working status and etc.in web and mobile phone app.The one year operation show that the system is normal and stable.