水文缆道耦合雷达波在线测流系统应用研究

Applied Research on On-line Current Measurement System of Hydrologic Cable Coupled Radar Wave

对于具有暴涨暴落特征的山溪性河流,洪水涨落过程中河道漂浮物较多,此时采用常规水文缆道流速仪方式进行测流具有较大安全隐患。此外,为处理测流期间流速仪缠绕等问题又使测流历时不可控。近年来,雷达波在线测流技术已逐步成熟。对水文缆道与雷达波测流进行系统耦合,通过无线网关以及无线低功耗透传适配器实现雷达流速采集控制、实时水位获取、缆道自动行进控制等进行了尝试,并在崇阳水文站进行试验研究。经过近2年运行及测流比测分析,系统耦合运行可靠,测流精度满足测验要求。

For mountain stream rivers with water level rising or falling tremendously,there are many floating objects in the river during flood fluctuation,so it has potential safety hazards to use the conventional hydrologic cable current meter to measure the flow.In addition,in order to deal with the entanglement of the current meter which makes flow measurement duration uncontrollable,in recent years,radar wave online current measurement technology has gradually become mature.The hydrologic cable way is coupled with radar wave current measurement system,and it was attempted to realize radar velocity acquisition and control,real-time water level acquisition and cable way automatic travel control through wireless gateway and wireless low-power transmission adapter and the experiment was carried out in Chongyang Hydrologic Station.After nearly 2 years of operation and flow measurement comparison analysis,the system is reliable in coupled operation and the flow measurement accuracy meets the test requirements.