The effectiveness of different width piezoelectric energy harvester in the pedestrian floor tile energy harvesting syste
- PDF / 4,586,730 Bytes
- 8 Pages / 595.276 x 790.866 pts Page_size
- 31 Downloads / 255 Views
Journal of the Korean Physical Society https://doi.org/10.1007/s40042-020-00036-4
ORIGINAL PAPER
The effectiveness of different width piezoelectric energy harvester in the pedestrian floor tile energy harvesting system for internet of things sensors Jeong Pil Jhun1 · Seong Do Hong1 · Deok Hwan Jeon1 · Tae Hyun Sung1 Received: 18 November 2020 / Revised: 30 November 2020 / Accepted: 1 December 2020 © The Korean Physical Society 2020
Abstract 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 m Wmax under identical impedance conditions (RL = 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. Keywords Piezoelectric energy harvester · Pedestrian floor tile energy harvesting system · Undervoltage-lockout · Smart walkway · IoT sensor
1 Introduction Energy harvesting is attracting interest as a technological basis for the Internet of Things (IoT)—the core technology of the 4th industrial revolution. To resolve the power supply problem for IoT systems sensors, the energy harvesting technology is continuously being investigated [1–3]. There are different energy sources for the energy harvesting technology, including light [4, 5], heat [6], and vibration [7–9]. Among these, vibration-based piezoelectric energy harvesting is advantageous because of its potentially wider application. In addition, wind [10, 11], water [12, 13], vehicles [14, 15], and humans [16, 17] can also serve as energy sources for vibration-based piezoelectric energy harvesting technology. A piezoelectric walkway block, for example, can generate approximately 3.7 W/m2 power during the passage Jeong Pil Jhun, Seong Do Hong, Deok Hwan Jeon have contributed equally to this work. * Tae Hyun Sung [email protected] 1
Department of Electrical Engineering, Hanyang University, Seoul 133‑791, Republic of Korea
of a 100-kg adult [18]. A piezoelectric energy harvesting floor tile for smart home energy management was reported to generate a peak output voltage of 42 V and a peak current of 11 μA [19]. In addition, a piezoelectric energy harvester attached to an LED shoe pair worn by a worker produced 800 μW at a resistive matching point of 400 kΩ to light the LED [20]. These studies demonstrated that piezoelectric energy harvesting technology can exploit human motion as an
Data Loading...
