SHENG Tao1, XU Wenyan2, SHI Shengzhe1, LIU Sheng1
（1. School of Computer Science and Technology， Huaibei Normal University， Huaibei 235000， China； 2. School of Physics and Electrical Information， Huaibei Normal University， Huaibei 235000, China）
Abstract： A method of measuring turbidity based on a multi-wavelength spectral sensor is proposed by using SFH4737 broad-band infrared LED, a multi-wavelength spectral sensor and independently developed data processing software. Combining multiple wavelength data from the sensor, the unitary and multivariate fitting models were constructed to investigate the relationship among light intensity information, absorbance and turbidity, respectively. The turbidity of the actual water bodies was measured separately by using proposed method and a commercially visible spectrophotometer. The independent-samples T test (p>0.05) showed that there was no significant difference between the method in this paper and the standard assay method. The method is simple and inexpensive, and can be applied to the rapid detection of water turbidity, providing a new way of industrial online measurement.
Key words：turbidity measurement； multi-wavelength； multi-fitting； multichannel spectral sensor； spectrophotometry
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基于多波长光谱传感器的浊度测量
盛 涛1, 许文艳2 , 施圣哲1, 刘 升1
（1. 淮北师范大学 计算机科学与技术学院， 安徽 淮北 235000； 2. 淮北师范大学 物理与电子信息学院， 安徽 淮北 235000）
摘 要: 利用SFH4737宽波段红外LED、 多波长光谱传感器以及自主开发的数据处理软件， 设计了一种基于多波长光谱传感器的浊度测量系统。 结合传感器多个波长数据， 分别构建了单元和多元拟合模型， 探究光强信息、 吸光度与浊度的关系， 用于实际水体浊度的测量， 并将结果与商用可见分光光度计的测定结果进行对比分析。 对立样本T检验（p>0.05）表明， 本文方法与标准检测方法无显著差异， 且操作简单， 成本低廉， 可应用于水质浊度的快速检测， 为工业在线测量提供了一种新的策略。
关键词： 浊度测量； 多波长； 多元拟合； 多通道光谱传感器； 分光光度法
引用格式：SHENG Tao, XU Wenyan, SHI Shengzhe, et al. Turbidity measurement based on multi-wavelength spectral sensor. Journal of Measurement Science and Instrumentation， 2022， 13（2）：147-155. DOI：10.3969／j.issn.1674-8042.2022.02.003
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