| 基于压电效应的路面能量收集技术 |
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| 引用本文： | 赵鸿铎,梁颖慧,凌建明.基于压电效应的路面能量收集技术[J].上海交通大学学报,2011(Z1). |
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| 作者姓名： | 赵鸿铎 梁颖慧 凌建明 |
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| 作者单位： | 同济大学道路与交通工程教育部重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(50908177) |
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| 摘 要： | 对基于压电效应的沥青路面能量收集技术的可行性和效率进行探讨.路面中存在应力驱动和振动驱动能.速度为60 km/h的标准轴载对沥青路面深40 mm处所做的功约为0.644 J;实测的沥青路面振动频率约在15 Hz.初步试验表明,一个钹式压电换能器阵列,在0.7 MPa 20 Hz的荷载作用下,可产生超过250 V的电压,能稳定点亮8个LED灯,这验证了压电式路面能量收集技术的可行性.压电换能器性能取决于器件的换能效率、储能能力、疲劳寿命,以及与路面刚度的匹配程度.理论和有限元分析表明,针对路面环境,不同换能器的性能各有差异,换能效率约为5%~30%.直径为32 mm的钹式换能器,在0.7 MPa荷载的作用下,可产生高达97.33 V的电压.若荷载频率为20 Hz,则最多可收集到1.2 mW的电能,潜能可观.
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| 关 键 词： | 道路 沥青路面 压电效应 能量收集 换能器 |
Study on Harvesting Energy from Pavement Based on Piezoelectric Effects |
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| ZHAO Hong-duo,LIANG Ying-hui,LING Jian-ming.Study on Harvesting Energy from Pavement Based on Piezoelectric Effects[J].Journal of Shanghai Jiaotong University,2011(Z1). |
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| Authors: | ZHAO Hong-duo LIANG Ying-hui LING Jian-ming |
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| Institution: | ZHAO Hong-duo,LIANG Ying-hui,LING Jian-ming(Key Laboratory of Road and Traffic Engineering of Ministry of Education,Tongji University,Shanghai 200092,China) |
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| Abstract: | This paper presents the initial research results of harvesting energy from asphalt pavement based on piezoelectric effects.There are two mechanical energies existing in pavement: stress and vibration driven energy.Approximately 0.664 J of work is done by a standard axle load at a speed of 60 km/h in a depth of 40 mm on asphalt pavement.A vibration frequency of 15 Hz is measured in the field ofasphalt pavement.A 254 V of potential is measured from the cymbal array in the initial laboratory test conducted und... |
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| Keywords: | road asphalt pavement piezoelectric effects energy harvesting transducer |
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