基于STM32的干式生化电解质分析仪的研究与设计

Research and Design of a Dry Biochemical Electrolyte AnalyzerBased on STM32

摘要:

国产电解质分析仪大多基于湿式法，结构相对复杂，操作过程繁琐，且由于样本外露存在一定的生物安全隐患。针对临床医学上对人体体液中关键电解质成分的检测需要，设计了一种基于干式生化法测试钾离子、钠离子、氯离子的人体电解质分析仪。分析仪基于Cortex-M3嵌入式系统开发，设计了新型干式生化电解质测试片，采用离子选择电极法进行离子测量，结合Nernst方程，提出了一种新的干式电解质测量方法，完成了系统软硬件设计。整机符合医疗仪器行业标准，性能稳定，检测精度高，通过了医疗仪器注册检验。该设计在一定程度上提高了国产电解质分析仪的设计水平，突破了人体电解质干式检测的技术瓶颈，对中小型医院普及人体电解质分析仪具有一定的促进作用。

Abstract:

Most of the domestic electrolyte analyzers are based on the wet method, with relatively complex structure and complicated operation process, and there are certain biosafety risks due to sample exposure. In order to meet the needs of clinical medicine for the detection of key electrolyte components in human body fluid, a human electrolyte analyzer based on dry biochemical method was designed to detect potassium, sodium and chloride ions. Based on the development of Cortex-M3 embedded system, the analyzer has designed a new type of dry biochemical electrolyte test piece, used the ion selective electrode method for ion measurement, combined with the Nernst equation, proposed a new dry electrolyte measurement method, and completed the system hardware and software design. The whole machine conforms to the medical instrument industry standard, with stable performance and high detection accuracy, and has passed the medical instrument registration inspection. This design improves the design level of domestic electrolyte analyzer to a certain extent, breaks through the technical bottleneck of dry detection of human electrolyte, and has a certain role in promoting the popularization of human electrolyte analyzer in small and medium-sized hospitals.