摘要
目的:研制一个能模拟各种血氧状态的虚拟手指——血氧模拟器,用于检测临床监护仪的血氧监护模块和家庭使用的血氧测量仪的性能。方法:从仪器整体需求入手,着重对微弱光信号检测及分离、光信号调制和发光二极管驱动电路这三大核心模块进行电路设计及噪声分析,提出解决方案和性能指标要求,合理选择硬件电路中的元器件,使模拟仪具有测量精确、实用便捷的功能。结果:采用模拟电路技术对系统中三大核心电路模块进行分析和设计,完成了一个功能相对完备的血氧饱和度模拟仪的设计与制作。结论:通过与其他血氧模拟仪的比对,可判断该血氧模拟仪在模拟精度、模拟速度、稳定性、功耗、便携等方面的性能均达到同类产品的水平,具有很大的市场潜力与推广价值。
Objective To design oxygen saturation simulator,a virtual finger that can simulate a variety of oxygen state of one＇s finger,was designed to detect the performance of the oxygen saturation monitor in clinical care and oximeter in home care.Methods The study was based on the overall demands for simulator to figure out the propose solutions and performance requirements.The three core modules of the circuit：the weak optical signal detection and separation,the optical signal modulation and the light-emitting diode drive circuit were mainly considered,together with the noise analysis was taken into account to improve the accuracy of the system.According to performance index of the hardware components,the reasonable choice was made so that the simulator could have measurement precision,practical and convenient features.Results Analog circuit technology was employed to analyze the system and design modules in the three core circuits.A relatively complete functional oxygen saturation simulator was designed and produced.Conclusion Through comparing with the other companies＇ instruments,the property of our oxygen saturation simulator,such as the simulation accuracy,simulation speed,stability,power consumption,and portable could achieve the level of similar products.It has great market potential and promotion of value.
出处
《医疗卫生装备》
CAS
2011年第6期13-16,共4页
Chinese Medical Equipment Journal
基金
国家高技术研究发展计划(863计划)项目(2007AA12A220)
国防科工局"十一五"民用航天预研项目(B3320062116)
关键词
血氧饱和度
血氧模拟仪
光电检测
oxygen saturation
SpO2 simulator
photoelectric detection
