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介绍了一种旁流式医用呼吸CO2浓度检测系统的研制。采用NDIR(Non-Dispersive Infra-Red)红外谱吸收和斩波的技术来实现信号的提取和放大,并利用基于软件的补偿算法提高测量精度,实现呼吸CO2浓度和呼吸率实时与长时间的连续检测。
A kind of side stream medical breath CO2 concentration detection system was introduced. The NDIR (Non-Dispersive Infra-Red) infrared absorption and chopping technology is adopted to extract and amplify the signal, and the software-based compensation algorithm is used to improve the measurement accuracy so as to realize the real-time and long-term continuous of respiratory CO2 concentration and respiration rate Detection.