血氧仪核心硬件电路设计及Multisim仿真  

Design of the Blood-oxygen Monitor Core Hardware Circuit and Multisim Simulation

作　　者：杨东明[1] 万频[1] 张伯威[1] 廖丽敏[1] 

机构地区：[1]广东工业大学自动化学院,广东广州510006

出　　处：《电子科技》2011年第2期60-62,65,共4页Electronic Science and Technology

摘　　要：为了实时检测血氧量,能使缺氧特别敏感的脑组织或心脏类疾病患者得到及时治疗,采用近红外双波长透射式光电脉搏血氧测定法,以H桥电路对发射光源进行控制及通用运算放大器搭建滤波电路。运用参数理论计算和计算机仿真结果相对比的方法,通过Mu ltisim软件对所设计电路进行仿真,仿真结果与理论参数计算相吻合,证明了电路参数设计的可行性,为血氧仪的实物制作提供参考。For real-time detection of oxygen saturation for timely treatment of the brain or heart,which are very sensitive to oxygen inadequacy,the near-infrared wavelengths double photoelectric pulse oximeter transmission method is adopted.The illuminant is controlled with the H bridge circuit and the filter circuit is built with general op-amps.Parameters by theoretical calculation is compared with the computer simulation results in Multisim and satisfactory results are obtained.It is shown that the design of the circuit parameters is feasible and can be a help in making the physical blood-oxygen monitor.

关 键 词：MULTISIM仿真 血氧饱和度 双波长透射式测量 光电二极管 滤波器参数计算 H桥驱动电路 

分 类 号：R444[医药卫生—诊断学] TN219[医药卫生—临床医学]