| 静电式同位素辐射能量收集器的研究 |
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| 引用本文： | 王翔,张强,陈然斌,邓志强,伞海生. 静电式同位素辐射能量收集器的研究[J]. 物理学报, 2014, 63(2): 28501-028501. DOI: 10.7498/aps.63.028501 |
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| 作者姓名： | 王翔 张强 陈然斌 邓志强 伞海生 |
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| 作者单位： | 1. 厦门大学物理与机电工程学院, 厦门 361005;2. 厦门大学萨本栋微纳米科学技术研究院, 厦门 361005 |
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| 基金项目： | 国家自然科学基金（批准号：51075344，61274120）、厦门市科技计划（批准号：3502Z20123008）和福建省高校产学研合作科技重大项目（批准号：2013H6023）资助的课题. |
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| 摘 要： | 针对目前无线传感网络节点对长寿命微能源的需求,提出了将同位素辐射能量转换为电能的静电式振动能量收集原理.该原理利用同位素63Niβ辐射能实现平行板悬浮-质量块结构的自由阻尼振动,并通过可变电容电路实现充-放电振荡循环,从而实现电能的转换.通过分析运动状态和能量转化过程,给出了结构的运动状态和能量输出方程,并使用Matlab/Simulink对输出特性进行了数值模拟和基于Ansys的结构优化设计.根据仿真和优化的结构尺寸设计出了满足最大平均输出功率的微电子机械器件结构.结果表明:所设计的结构在一阶固有频率为500 Hz,两极板间距离为75μm,外接电阻为90 k?时平均输出功率最大为0.416μW,转化效率8.25%.
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| 关 键 词： | 能量收集 同位素63Ni 静电式 振动能量 |
| 收稿时间： | 2013-07-12 |
Radioisotope energy conversion using electrostatic vibrationto–to–electricity converters |
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| Wang Xiang,Zhang Qiang,Chen Ran-Bin,Deng Zhi-Qiang,San Hai-Sheng. Radioisotope energy conversion using electrostatic vibrationto–to–electricity converters[J]. Acta Physica Sinica, 2014, 63(2): 28501-028501. DOI: 10.7498/aps.63.028501 |
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| Authors: | Wang Xiang Zhang Qiang Chen Ran-Bin Deng Zhi-Qiang San Hai-Sheng |
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| Affiliation: | 1. Department of Mechanical and Electrical Engineering, School of Physical and Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, China;2. Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China |
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| Abstract: | Wireless sensor nodes deployed at remote and inaccessible locations need long lifetime power sources to prevent cost prohibitive periodic replacement. In this work, we present a radioisotope 63Ni energy converter using radioisotope-powered electrostatic vibration-to-electricity conversion. Free damped vibration happening in a suspended parallel plate structure with a mass enables a variable capacitance, which can be used to realize the generation of electricity energy by an external circuit. The MATLAB/Simulink is used to simulate the vibration and output power, and the Ansys is used to optimize the structure design. The results show that the optimized design structure with a first-order natural frequency of 500 Hz, a plate gap of 75 μm, and an external resistance of 90 kΩ can generate an average output power of 0.416 μW and conversion efficiency of 8.25%. |
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| Keywords: | energy scavenging isotopes 63Ni electrostatic converter vibration energy |
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