Arefin Md Shamsul, Redoute Jean-Michel, Yuce Mehmet Rasit
Annu Int Conf IEEE Eng Med Biol Soc. 2017 Jul;2017:3273-3276. doi: 10.1109/EMBC.2017.8037555.
Wearable sensor nodes have gained a lot of attention during the past few years as they can monitor and record people's physical parameters in real time. Wearable sensor nodes can promote healthy lifestyles and prevent the occurrence of potential illness or injuries. This paper presents a flexible wearable sensor system powered by an efficient solar energy harvesting technique. It can measure the subject's heartbeats using a photoplethysmography (PPG) sensor and perform activity monitoring using an accelerometer. The solar energy harvester adopts an output current based maximum power point tracking (MPPT) algorithm, which controls the solar panel to operate within its high output power range. The power consumption of the flexible sensor nodes has been investigated under different operation conditions. Experimental results demonstrate that wearable sensor nodes can work for more than 12 hours when they are powered by the solar energy harvester for 3 hours in the bright sunlight.
在过去几年中，可穿戴传感器节点备受关注，因为它们能够实时监测和记录人们的身体参数。可穿戴传感器节点可以促进健康的生活方式，并预防潜在疾病或伤害的发生。本文提出了一种由高效太阳能采集技术供电的柔性可穿戴传感器系统。它可以使用光电容积脉搏波描记法（PPG）传感器测量受试者的心跳，并使用加速度计进行活动监测。太阳能采集器采用基于输出电流的最大功率点跟踪（MPPT）算法，该算法控制太阳能电池板在其高输出功率范围内运行。已经研究了柔性传感器节点在不同操作条件下的功耗。实验结果表明，当可穿戴传感器节点在明亮阳光下由太阳能采集器供电3小时后，它们可以工作超过12小时。
