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The effectiveness of different width piezoelectric energy harvester in the pedestrian floor tile energy harvesting system for internet of things sensors
Journal of the Korean Physical Society ( IF 0.8 ) Pub Date : 2020-12-14 , DOI: 10.1007/s40042-020-00036-4
Jeong Pil Jhun , Seong Do Hong , Deok Hwan Jeon , Tae Hyun Sung

A pedestrian floor tile energy harvesting system (PFEH) capable of accommodating harvesters of variable widths (20, 30, and 40 mm) is designed for operating Internet of Things (IoT) sensors. The electrical characteristics of the piezoelectric energy harvesters (PEHs) were measured using an impedance analyzer. The PEHs in the PFEH are displaced following a cantilever mechanism, over a distance of 4 mm. Finite element simulations using the ANSYS tool reveal similar stress distributions for various widths at the same displacement ( d = 4 mm). The 40 mm PEH group (six 40 mm wide PEHs) produced the highest output power of 1.01 mW max under identical impedance conditions ( R L = 105 kΩ). The PFEH containing the 40 mm PEH group turns on a small LED display board (comprising 30 LEDs) for 2 s through an undervoltage-lockout (UVLO) module. The proposed pedestrian floor tile energy harvesting system can be employed as a power source for IoT sensors.

中文翻译:

不同宽度压电能量采集器在行人地砖物联网传感器能量采集系统中的有效性

能够容纳可变宽度(20、30 和 40 毫米)的收集器的行人地砖能量收集系统 (PFEH) 专为操作物联网 (IoT) 传感器而设计。使用阻抗分析仪测量压电能量收集器 (PEH) 的电气特性。PFEH 中的 PEH 遵循悬臂机构移位 4 mm 的距离。使用 ANSYS 工具进行的有限元模拟揭示了相同位移 (d = 4 mm) 下不同宽度的类似应力分布。40 mm PEH 组(六个 40 mm 宽 PEH)在相同阻抗条件下(RL = 105 kΩ)产生最高 1.01 mW(最大值)的输出功率。包含 40 mm PEH 组的 PFEH 通过欠压锁定 (UVLO) 模块打开小型 LED 显示板(包含 30 个 LED)2 秒。
更新日期:2020-12-14
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