水利水电技术2017，Vol.48Issue(3)：71-76,6.DOI:10.13928/j.cnki.wrahe.2017.03.013
大面积水域浓度场测试方法及系统研究
Study on measurement method for concentration field of large water area and its system
摘要
Abstract
Aiming at the problem that is difficult to realize the real-time measurement of concentration field of large ware area,while the accuracy of the measurement is lower as well,a multichannel fluorescence testing system and its method are adopted.Firstly,the concentration parameters of the discrete points are obtained with the probe on the basis of the principle of light-induced fluorescence detection of concentration (LIF).Afterward,hundreds of measuring points are connected through bus or communication network technology.Finally,the acquisited data are transported to the central measurement and control computer through the data bus or network,and then an integrated concentration field is formed after processing the discrete data.The result from the test made in the concentration field of steady flow shows that the average relative error of pollutant measurement is not over 5％,the maximum relative error of a single measurement is 8.33％,the sensor linearity error is not over 5％ and the detectable concentration resolution of fluorescein sodium solution is 0.001 ppm,thus the measurement made by this system is stable with a higher accuracy.Compared with the other concentration measurement methods,this system has the advantages of large measuring area and real-time measurement,and then can provide a reliable support for those fields of prevention and control of water pollution,etc.关键词
大面积水域/单色光诱导荧光/检测/探头/瞬时浓度场/污染扩散/测量系统/水污染防治Key words
large water area/light induced fluorescence/testing/probe/instantaneous concentration field/pollution diffusion/measurement system/water pollution control分类
资源环境引用本文复制引用
万浩平,杨楠,樊宜..大面积水域浓度场测试方法及系统研究[J].水利水电技术,2017,48(3):71-76,6.基金项目
国家发明专利“一种水域浓度场的多通道荧光测试系统和方法”(CN201110408483.5) （CN201110408483.5）
