摘要
针对水质氨氮浓度检测存在连续检测困难、精度低的问题,研制了一种新型水质氨氮检测系统。以比尔-朗伯定律作为浓度检测理论依据,确定了基于连续流动水杨酸分光光度法检测原理的整体系统结构。基于STM32F407微控制器和实时操作系统μC/OS-Ⅲ设计了检测系统。使用标准液进行校准实验得到数据,采用最小二乘法拟合数据,校准样机。试验结果表明,系统工作稳定,精度高,符合相关国家标准的要求。
Aiming at the difficulty of continuous detection and low accuracy in the detection of ammonia nitrogen in water,a new type system for ammonia nitrogenconcentration of water was developed. In light of Beer-Lambert Law, the structure of the whole system is determined based on the principle of continuous flow analysis and Salicylic acid spectrophotometry. Based on STM32F407 micro controller and real-time operating systemμC/OS-III,the detection system was designed. The least square method is used to fit the experimental data which is obtained by testing the standard liquid to calibrate the system. Test results show that the system is stable and high precision,which meets the requirements of relevant national standards.
出处
《电子器件》
CAS
北大核心
2016年第6期1472-1476,共5页
Chinese Journal of Electron Devices
