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基于STM32的血氧校准系统的电路设计

更新时间:2020-10-26 04:16:02 大小:2M 上传用户:gsy幸运查看TA发布的资源 标签:stm32血氧校准系统 下载积分:1分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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基于现有双波长血氧校准系统无法实现对三波长脉搏血氧仪的校准的问题,提出了一种基于STM32的三波长血氧校准系统的电路设计。设计中采用一个包含接收管和集成3种光源发光管的模拟手指来模拟人体手指;应用性能良好、功能稳定的AD795实现了对微弱光信号的采集;以STM32F103系列芯片为控制核心实现了对人体脉搏信号及人体组织对血氧探头光信号衰减过程的模拟;通过以CD4017为核心的分频电路实现了对不同发光管的分时驱动。经过实验的验证与分析,得出本系统的设计方案具有较高的可行性和实用性结论。

Aiming at the problem that the existing dual-wavelength oxygen saturation simulator cannot achieve the calibration of the three-wavelength blood oxygen detection system,a design of the threewavelength oxygen saturation simulator based on STM32 is proposed.In the design,an analog finger containing a receiver tube and a luminescent tube integrating three kinds of light sources is used to simulate human fingers. Applicating the AD795 with good performance and stable function for the acquisition of weak optical signal;taking STM32F103 series chip as the core to realize the simulation of human pulse signal and the attenuation of blood oxygen probe optical signal.Using the CD4017 as the core of the frequency division circuit to drive different LEDflash with different time.Through the verification and analysis of the experiment,it is concluded that the design scheme of the simulator is highly feasible and practical.

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