一句话：提出 DTEHR 框架，利用动态热电发电机收集手机废热，为热电冷却器供电并存储余能，从而降温并延长电池寿命。
移动应用日益资源密集，导致电池高耗电与表面过热，损害用户体验，成为智能手机设计的严峻挑战。本文提出 DTEHR——移动动态热能收集复用框架：用动态热电发电机（TEG）收集热能，所发电力既驱动热电冷却器（TEC）冷却热点，又为微型超级电容器（MSC）充电以延长使用时间。作者构建 Android 多组件功耗与热分析工具 MPPTAT，并在真实应用上评测。结果显示，DTEHR 将冷热区域温差最多降低 15.4°C（内部）和 7°C（表面）；TEC 冷却使表面与内部热点平均降低 8°C 与 12.8mW；动态 TEG 产生 2.7–15mW 功率，远高于 TEC 冷却所需，余能存入 MSC 延长电池寿命。
Recently, mobile applications have gradually become performance- and resource- intensive, which results in a massive battery power drain and high surface temperature, and further degrades the user experience. Thus, high power consumption and surface over-heating have been considered as a severe challenge to smartphone design. In this paper, we propose DTEHR, a mobile Dynamic Thermal Energy Harvesting Reusing framework to tackle this challenge. The approach is sustainable in that it generates energy using dynamic Thermoelectric Generators (TEGs). The generated energy not only powers Thermoelectric Coolers (TECs) for cooling down hot-spots, but also recharges micro-supercapacitors (MSCs) for extended smartphone usage. To analyze thermal characteristics and evaluate DTEHR across real-world applications, we build MPPTAT (Multi-comPonent Power and Thermal Analysis Tool), a power and thermal analyzing tool for Android. The result shows that DTEHR reduces the temperature differences between hot areas and cold areas up to 15.4°C (internal) and 7°C (surface). With TEC-based hot-spots cooling, DTEHR reduces the temperature of the surface and internal hot-spots by an average of 8° and 12.8mW respectively. With dynamic TEGs, DTEHR generates 2.7-15mW power, more than hundreds of times of power that TECs need to cool down hot-spots. Thus, extra-generated power can be stored into MSCs to prolong battery life.
DOI 原文 ·
@inproceedings{paperbot4241,
title = {Exploiting Dynamic Thermal Energy Harvesting for Reusing in Smartphone with Mobile Applications},
author = {Yuting Dai and Tao Li and Benyong Liu and Mingcong Song and Huixiang Chen},
booktitle = {ASPLOS},
year = {2018},
doi = {10.1145/3173162.3173188}
}