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Mechanical Energy Scavenging for in-Wheel Sensors

轮内传感器的机械能回收

基本信息

批准号：
EP/H035346/1
负责人：
Carl Anthony
金额：
$ 12.3万
依托单位：
University of Birmingham
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2010
资助国家：
英国
起止时间：
2010 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FH035346%2F1
关键词：
Mechanical Energy Scavenging Wheel Sensors

项目摘要

This project proposes to use the centrifugal force imparted to a mass, rotating within a car wheel to wind a clockwork system that can then be used to power in wheel sensors. Power is generated by the spring unwinding and driving a micro-generator.The project will investigate the feasibility of the mechanical spring system to scavenge and store enough energy to power typical in-wheel sensors. At present typical MEMS based electromagnetic and electrostatic vibrational scavenging systems offer power outputs in the 10-100 microWatt range. The energy harvester proposed here offers the possibility of over 1 milliWatt of power. The fully wound spring system stores up to 2.6 milliWatt-hr of energy and with a conversion factor of 50% for the generation; and the system designed to fully unwind over 1 hour, then there will be a 1.3 milliWatt supply for that hour. The system maintains this power level by being continually rewound by the start-stop motion of the car and any cumulative vibrational motion of the wheel in the radial direction. This generated power can be varied in the 10-10000 microWatt range by changing the speed with which the spring unwinds from seconds to hours. The system can therefore provide the short high power burst required for wireless transmission as well as the lower power of the measurement and sleep states. As part of the project the actual real journey dynamics of a car wheel will also be measured using a remote sensor pod attached to the car. This measured data will be made freely available to researchers for use in energy harvester performance modelling via an open access online database.To achieve the project goal the research will draw upon the unique skills and expertise from the Bio-medical & MicroEngineering group and the Vehicle Technology Research Centre, both situated in the School of Mechanical Engineering at the University of Birmingham.

该项目提出利用离心力赋予一个质量，在汽车车轮内旋转，以缠绕发条系统，然后可以用于车轮传感器的电源。该项目将研究机械弹簧系统的可行性，以储存足够的能量来为典型的轮内传感器供电。目前，典型的基于MEMS的电磁和静电振动清除系统提供10-100微瓦范围内的功率输出。这里提出的能量采集器提供了超过1毫瓦功率的可能性。完全缠绕的弹簧系统存储高达2.6毫瓦-小时的能量，发电转换系数为50%;系统设计为在1小时内完全展开，那么该小时将有1.3毫瓦的供应。该系统通过轿厢的启停运动和车轮在径向方向上的任何累积振动运动而不断地回卷来保持该功率水平。通过改变弹簧从数秒到数小时的退绕速度，可以在10-10000微瓦的范围内改变所产生的功率。因此，系统可以提供无线传输所需的短的高功率突发以及测量和睡眠状态的较低功率。作为该项目的一部分，汽车车轮的实际真实的行程动态也将使用连接到汽车的遥感器吊舱进行测量。这些测量数据将通过一个开放的在线数据库免费提供给研究人员，用于能量采集器性能建模。为了实现项目目标，研究将借鉴生物医学和微工程小组以及车辆技术研究中心的独特技能和专业知识，这两个小组都位于伯明翰大学机械工程学院。