一种应用于非接触式心率、呼吸频率监测研究的模拟器设计
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R314

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军队后勤应急科研重点项目(BHJ20C008),海军军医大学(第二军医大学)海军特色医学中心青年科技创新人才项目.


Design of a simulator for non-contact heart rate and respiratory rate monitoring research
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Supported by Key Project for Logistics Emergency Research of PLA (BHJ20C008) and Youth Science and Technology Innovation Talent Project of Naval Medical Center of Naval Medical University (Second Military Medical University).

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    摘要:

    目的 设计一种用于非接触式心率、呼吸频率监测研究的模拟器,阐述其基本工作原理并测试其指标性能。方法 利用STM32F429开发板、电磁栓、H桥驱动电路、直流推杆、触摸屏等设计心率、呼吸模拟器,并进行性能测试,测试参数包括心率、心率变化响应、呼吸频率和呼吸频率变化响应。结果 成功研制了一种心率、呼吸模拟器。心率模拟器的心率可调节范围为30~250 min-1,误差都在±2 min-1内,心率变化响应时间在15 s内,满足应用要求。呼吸模拟器的呼吸频率可调节范围为1~40 min-1,误差都在±1 min-1内,呼吸频率变化响应时间在15 s内,满足应用要求。结论 该心率、呼吸模拟器能够通过设置不同的心率、呼吸频率参数模拟不同伤病状态下的人体生理信号,符合非接触式生命体征监测研究中的应用要求,可实现测量范围、测量精度、响应时间等性能指标监测的专业化设计与验证。

    Abstract:

    Objective To design a simulator for non-contact heart rate and respiratory rate monitoring research, explain its working principle, and test its performance. Methods STM32F429 development board, electromagnetic bolt, H-bridge driver circuit, direct current push rod, and touch screen were used to design a heart rate and breath simulator. Performance tests were evaluated with parameters including heart rate, heart rate change response, respiratory rate, and respiratory rate change response. Results A heart rate and breath simulator was successfully developed. The adjustable range of the heart rate simulator was 30-250 min-1 with error in ±2 min-1. The adjustable range of the respiratory rate of the breath simulator was 1-40 min-1 with error in ±1 min-1. The response time of heart rate change and respiratory rate change was both in 15 s, which met its application requirements. Conclusion The heart rate and breath simulator can simulate human physiological signals under different injury conditions by setting different heart rate and respiratory rate parameters, which meets the application requirements for non-contact vital signs monitoring research, and can realize the professional design and verification of performance indicators such as measurement range, measurement accuracy, and response time.

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  • 收稿日期:2021-07-27
  • 最后修改日期:2022-03-07
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  • 在线发布日期: 2022-07-22
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