论文标题
ZEL：使用异质能量收割机的净零能量生命系统
ZEL: Net-Zero-Energy Lifelogging System using Heterogeneous Energy Harvesters
论文作者
论文摘要
我们提出了Zel，这是第一个净能源寿命系统，允许办公室工作人员收集他们在公司场所进行的何时，何时，地点和活动的半永久记录。 Zel通过使用具有不同特征的异质能量收割机来实现高精度的生命。该系统基于每个员工佩戴的192克纳梅特式可穿戴设备，该设备配备了两个比较器，可在系统状态之间进行无缝切换，从而最大程度地减少电池使用情况并启用净零能量，半永久数据收集。为了证明系统的有效性，我们在实用环境中对11名参与者进行了数据收集实验，发现人依赖性（PD）模型达到了87.2％（加权F量）和静态/动态活动识别精度的87.2％的8位识别精度水平为93.1％（加权f-measure）。其他测试证实了该系统的实际长期可操作性，并表明它可以达到99.6％的零能量运行率，即净零能量运行。
We present ZEL, the first net-zero-energy lifelogging system that allows office workers to collect semi-permanent records of when, where, and what activities they perform on company premises. ZEL achieves high accuracy lifelogging by using heterogeneous energy harvesters with different characteristics. The system is based on a 192-gram nametag-shaped wearable device worn by each employee that is equipped with two comparators to enable seamless switching between system states, thereby minimizing the battery usage and enabling net-zero-energy, semi-permanent data collection. To demonstrate the effectiveness of our system, we conducted data collection experiments with 11 participants in a practical environment and found that the person-dependent (PD) model achieves an 8-place recognition accuracy level of 87.2% (weighted F-measure) and a static/dynamic activities recognition accuracy level of 93.1% (weighted F-measure). Additional testing confirmed the practical long-term operability of the system and showed it could achieve a zero-energy operation rate of 99.6% i.e., net-zero-energy operation.
