作　　者： (李哲）; (邓雨）; (陈娟）;

机构地区： 北京化工大学信息科学与技术学院,北京100029

出　　处： 《电子测量技术》 2017年第8期221-225,共5页

摘　　要： 浊度仪是用于评估水质浑浊度指标的重要仪器,通过对实验室型浊度测试仪检测原理的研究,作者及其团队对浊度仪光路及硬件电路系统进行了完整设计,并制作了实验室型浊度测试仪。仪器电路系统以ATmega128单片机为核心,具有LED驱动器、模数转换器、电流电压转换器、隔离器等模块。使用400NTU的浊度标准物质和超纯水在0~400NTU范围内,等间距配制了17个实验样本,对散射光和透射光强度与浊度值的关系进行了实验。实验证明,散射光和透射光特性与理论公式较为一致,且测试结果具有较好的线性,达到了预期效果。 Turbidity meter is a crucial instrument to evaluate the physical property of water. The authors and their team work on studying the measuring principle of turbidity, designing the optics and electronic structure, and finally fabrication a real instrument. This instrument based on the ATmega128 microcontroller, and also have several other modules： LED driver, analog-digital converter, current voltage converter, isolator and etc. Mixed with turbidity standard substance and ultrapure water, 17 samples were made uniformly-spaced from 0 NTU to 400 NTU. The experimental result shows that scattered light intensity and transmission light intensity is highly consistent with the equation, the linearity of the curve is very good and the experiments meet with the anticipated goal.

关 键 词： 浊度 散射光 透射光 电路系统设计