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Piezoelectric energy harvester under parquet floor

机译：镶木地板下的压电能量收集器

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The design, fabrication and testing of piezoelectric energy harvesting modules for floors is described. These modules are used beneath a parquet floor to harvest the energy of people walking over it. The harvesting modules consist of monoaxial stretched PVDF-foils. Multilayer modules are built up as roller-type capacitors. The fabrication process of the harvesting modules is simple and very suitable for mass production. Due to the use of organic polymers, the modules are characterized by a great flexibility and the possibility to create them in almost any geometrical size. The energy yield was determined depending on the dynamic loading force, the thickness of piezoelectric active material, the size of the piezoelectric modules, their alignment in the walking direction and their position on the floor. An increase of the energy yield at higher loading forces and higher thicknesses of the modules was observed. It was possible to generate up to 2.1mWs of electric energy with dynamic loads of 70kg using a specific module design. Furthermore a test floor was assembled to determine the influence of the size, alignment and position of the modules on the energy yield.
机译：描述了用于地板的压电能量收集模块的设计，制造和测试。这些模块用于镶木地板下方，以收集在其上行走的人们的能量。收获模块由单轴拉伸PVDF箔组成。多层模块构建为辊式电容器。收割模块的制造过程很简单，非常适合批量生产。由于使用了有机聚合物，模块的特点是具有很大的灵活性，并且可以以几乎任何几何尺寸制造它们。取决于动态负载力，压电活性材料的厚度，压电模块的尺寸，它们在行走方向上的排列以及它们在地板上的位置，来确定能量的产生。在较高的加载力和较高的模块厚度下，观察到能量产出的增加。使用特定的模块设计，在70kg的动态负载下可以产生高达2.1mW的电能。此外，组装了一个测试台，以确定模块的尺寸，对齐方式和位置对能量产出的影响。

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