基于自偏置巨磁电效应的采能和传感一体化微型自供电无线磁传感器研究

项目名称： 基于自偏置巨磁电效应的采能和传感一体化微型自供电无线磁传感器研究

项目编号： No.51475061

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 机械、仪表工业

项目作者： 邱景

作者单位： 重庆大学

项目金额： 84万元

中文摘要： 无线传感器网络是物联网的核心。电池寿命限制了现有无线传感器网络的功能周期。自供电传感器同时具有能量采集和信息获取功能，不需要外接电源或电池维护，可不受限制地持久应用于各种场合，能够根本解决无线传感器网络的供电瓶颈，是传感技术发展的必然趋势。但是，目前自供电传感技术几乎都是对这两种功能部件进行独立研究，而对二者之间的联系，尤其是可能产生的相互作用鲜有报道。本项目创新提出采能和传感一体化结构的自供电磁传感器，在一种结构中同时实现采能和传感两种功能，在激励能量作用下直接产生传感信号，提高能量使用效率，优化自供电传感器设计并简化加工工艺。以自偏置巨磁电复合材料研究为切入点，系统研究基于自偏置巨磁电效应的磁传感原理和多源能量采集技术，探索能同时实现采能和传感功能的物理机制，提出一套实现采能和传感一体化结构的自供电无线磁传感器设计方法，为解决我国物联网中无线传感器的电源供给提供理论和技术支撑。

中文关键词： 无线传感器网络；自供电传感器；自偏置巨磁电效应；能量采集；磁传感器

英文摘要： Wireless Sensor Networks (WSN) is the core of the Internet of Things (IOT). However, the function cycle of WSN is restricted by battery life. The power supply bottlenecks of WSN could be solved by the self-powering sensor completely, which performs both energy harvesting and information acquisition functions. The self-powering sensor is used increasingly wilder in our life and is the inevitable trend of the sensor technology development, resulting from it does not require external power source or battery maintenance. However, the current self-powering sensor techniques mainly focus on the two functions independently. Moreover, the relation especially the interaction of the two functions are less studied. In this project, we propose a novel hybrid self-powering magnetic sensor integrated energy harvesting and sensing functions simultaneously. This self-powering sensor with both energy harvesting and sensing functions in one structure, which could improve the efficiency of energy use, optimally design the self-powering sensor and simplify manufacturing technology. The study of giant self-biased magnetoelectric response material is the breakthrough point of this project. We should systematic research the magnetic field sensing technologies and the multiple energy resource harvesting technologies which both based on the giant self-biased magnetoelectric response. Explore the physical mechanisms which the two functions of energy harvesting and sensing can be achieved simultaneously. Provide a theoretic design method of the achievement of the structure integrated self-powering magnetic sensor with two functions of energy harvesting and sensing. Provide a theoretic basis and technical support for the power supply of wireless sensors in IOT.

英文关键词： Wireless sensor networks;self-powering sensor;giant self-biased magnetoelectric response;energy harvest;magnetic sensor