Low-Power Wearable Systems for Continuous Monitoring of Environment and Health for Chronic Respiratory Disease.
Low-Power Wearable Systems for Continuous Monitoring of Environment and Health for Chronic Respiratory Disease.
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DOI：
10.1109/jbhi.2016.2573286
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发表时间：
2016-09
影响因子：
7.7
通讯作者：
Bozkurt A
中科院分区：
文献类型：
--
作者：
Dieffenderfer J;Goodell H;Mills S;McKnight M;Yao S;Lin F;Beppler E;Bent B;Lee B;Misra V;Zhu Y;Oralkan O;Strohmaier J;Muth J;Peden D;Bozkurt A
我们提出了我们的努力，使可穿戴传感器系统，允许个人的环境暴露的生理和随后的不良健康反应的相关性。该系统将允许更好地了解臭氧水平增加和其他污染物对慢性哮喘疾病的影响。我们讨论了现有商业现成组件的低效率，以实现持续监测和我们的系统级和纳米使能的努力，以提高可穿戴性和功耗。我们的系统包括一个腕带，胸贴，和一个手持肺活量计。我们描述了我们的初步努力，以实现一个亚毫瓦系统，最终从热辐射和运动的身体与主要的贡献是一个超低功耗的臭氧传感器，挥发性有机化合物传感器，肺活量计，并集成这些和其他传感器在一个多模态传感平台收集的能量供电。测量的环境参数包括环境臭氧浓度、温度和相对湿度。我们的传感器阵列还通过光电容积描记术和心电图评估心率，通过光电容积描记术评估呼吸率，皮肤阻抗，三轴加速度，通过麦克风评估喘息和呼气气流。腕带、胸贴和肺活量计上的传感器分别消耗0.83、0.96和0.01毫瓦。来自每个传感器的数据持续流传输到外围数据聚合设备，随后传输到专用服务器进行云存储。未来的工作包括降低包括无线电在内的片上系统的功耗，以将每个所述系统的整体降低到亚毫瓦范围。
We present our efforts towards enabling a wearable sensor system that allows for the correlation of individual environmental exposures to physiologic and subsequent adverse health responses. This system will permit a better understanding of the impact of increased ozone levels and other pollutants on chronic asthma conditions. We discuss the inefficiency of existing commercial off-the-shelf components to achieve continuous monitoring and our system-level and nano-enabled efforts towards improving the wearability and power consumption. Our system consists of a wristband, a chest patch, and a handheld spirometer. We describe our preliminary efforts to achieve a sub-milliwatt system ultimately powered by the energy harvested from thermal radiation and motion of the body with the primary contributions being an ultra-low power ozone sensor, an volatile organic compounds sensor, spirometer, and the integration of these and other sensors in a multimodal sensing platform. The measured environmental parameters include ambient ozone concentration, temperature, and relative humidity. Our array of sensors also assesses heart rate via photoplethysmography and electrocardiography, respiratory rate via photoplethysmography, skin impedance, three-axis acceleration, wheezing via a microphone, and expiratory airflow. The sensors on the wristband, chest patch, and spirometer consume 0.83, 0.96, and 0.01 milliwatts respectively. The data from each sensor is continually streamed to a peripheral data aggregation device and is subsequently transferred to a dedicated server for cloud storage. Future work includes reducing the power consumption of the system-on-chip including radio to reduce the entirety of each described system in the sub-milliwatt range.