14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications | |
Simulation of a Novel Bridge MEMS-PZT Energy Harvester for Tire Pressure System | |
物理学;能源学 | |
Trabaldo, Edoardo^1,2 ; Köhler, Elof^2 ; Staaf, Henrik^2 ; Enoksson, Peter^2 ; Rusu, Cristina^1 | |
Acreo Swedish ICT AB, Sensor Systems Dept., Gothenburg, Sweden^1 | |
Chalmers University of Technology, Dept. of Microtechnology and Nanoscience, Gothenburg, Sweden^2 | |
关键词: Autonomous sensor systems; Comsol multiphysics; Energy Harvester; Innovative design; Multiple electrodes; Piezoelectric energy harvesters; Pulses excitation; Resonance frequencies; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012041/pdf DOI : 10.1088/1742-6596/557/1/012041 |
|
来源: IOP | |
【 摘 要 】
Self-powering is becoming an important issue for autonomous sensor systems. By having an on-the-go power source the life span increases in comparison to a limited battery source. In this paper, simulation of an innovative design for a piezoelectric energy harvester for Tire Pressure Measurement System (TPMS) is presented. The MEMS-based thin-film PZT harvester structure is in the form of a bridge with a big central seismic mass and multiple electrodes. This design takes the advantage of the S-profile bending and a short beam length to concentrate the piezoelectric effect in a small segment along the beam and maximize the power output for a given displacement. From simulation in Comsol Multiphysics, the 9mm × 5mm bridge, seismic mass of 8.7mg and resonance frequency of 615Hz, generates 1 μW by mechanical pulses excitation equivalent to driving at 60 km/h (roughly 180G).
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
Simulation of a Novel Bridge MEMS-PZT Energy Harvester for Tire Pressure System | 1078KB | download |