Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Durable and Sustainable Strap Type Electromagnetic Harvester for Tire Pressure Monitoring System

  • Lee, Soobum (Department of Mechanical Engineering, University of Maryland Baltimore County) ;
  • Kim, Dong-Hun (Department of Electrical Engineering, Kyungpook National University)
  • Received : 2013.09.08
  • Accepted : 2013.10.22
  • Published : 2013.12.31
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Abstract

A new concept design of electromagnetic energy harvester is proposed for powering a tire pressure monitoring sensor (TPMS). The thin coil strap is attached on the circumferential surface of a rim and a permanent magnet is placed on the brake caliper system. When the wheel rotates, the relative motion between the magnet and the coil generates electrical energy by electromagnetic induction. The generated energy is stored in a storage unit (rechargeable battery, capacitor) and used for TPMS operation and wireless signal transmission. Innovative layered design of the strap is provided for maximizing energy generation. Finite Element Method (FEM) and experiment results on the proposed design are compared to validate the proposed design; further, the method for design improvement is discussed. The proposed design is excellent in terms of durability and sustainability because it utilizes the everlasting rotary motion throughout the vehicle life and does not require material deformation.

Keywords

References

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  1. Energy Harvesting Technologies for Tire Pressure Monitoring Systems vol.5, pp.7, 2015, https://doi.org/10.1002/aenm.201401787
  2. A Triboelectric Self-Powered Sensor for Tire Condition Monitoring: Concept, Design, Fabrication, and Experiments vol.19, pp.12, 2017, https://doi.org/10.1002/adem.201700318