SEBAPULS雷达水位计的误差分析及水位的自动化校准
2021-07-20郭秋歌王小远
郭秋歌 王小远



摘 要:在明渠流量计算中,水位精度要求高,水位观測数据必须及时更新。这对水位观测数据的及时性和有效性提出了较高的要求,传统的人工测量已经不能满足当前需求。本文以德国希贝SEBAPULS雷达水位计为例,采用目标实时校准法,分析雷达水位计测量误差来源并进行校验,并通过编程将水位计测量值传输到上位机,实现水位数据的远程传输及自动化处理。
关键词:雷达水位计;目标实时校准法;PLC上位机;比测分析
中图分类号:P335.1文献标识码:A文章编号:1003-5168(2021)04-0079-03
Abstract: In the open channel flow calculation, the water level accuracy is required to be high, and the water level observation data must be updated in time. This puts high demands on the timeliness and effectiveness of water level observation data, and traditional manual measurement can no longer meet current needs. This paper took the German SEBAPULS radar water level gauge as an example, adopted the target real-time calibration method, analyzed the source of the radar water level gauge measurement error and performed verification, during which the measured value of the water level gauge was transmitted to the upper computer through programming, so as to realize the remote transmission and automatic processing of water level data.
Keywords: radar water level gauge;target real-time calibration method;PLC upper computer;comparison analysis
明渠流量测定和计算对防洪抗旱有着重要的作用,其中,水位测定是明渠流量计算的一个关键环节。传统的水位测定方法主要有速度-面积法、水坝和水槽法、动船法等[1]。传统方法通常通过人工现场测量完成,这使得数据的及时性和有效性面临巨大考验。近年来,随着雷达水位计、超声波水位计在水利工程应用上的广泛普及,越来越多的水利工作者采用水位计观测数据代替人工观测数据,以实现水利工程的智能化管理。有研究[2-3]通过比较测量法分析验证,给出雷达水位观测数据可作为正式水位观测数据的依据,实现误差允许范围内水位数据的自动化处理,提高工作效率,改善黄河上游水文站的水位测报条件。赵安林等[4]利用双目标实时校准法,抵消由声速引起的误差,从而减小整个水位计的测量误差,使雷达水位观测数据能够更准确地代替正式水位观测数据。……
