Low-Cost RFID Threshold Shock Sensors

@article{Todd2009LowCostRT,
  title={Low-Cost RFID Threshold Shock Sensors},
  author={B. Todd and M. Phillips and Stephen M. Schultz and Andrew Hawkins and Brian D. Jensen},
  journal={IEEE Sensors Journal},
  year={2009},
  volume={9},
  pages={464-469}
}
This paper describes a battery-free threshold shock sensor with wireless readout via RFID circuitry. The entire package is designed to provide low-cost sensors for monitoring shock loads in applications such as shipping. The sensor is based on a mechanical bistable mechanism laser-cut from a single Delrin layer which switches states when exposed to accelerations above a threshold. The sensor was tested using quasi-static accelerations in a centrifuge, pulsed accelerations from an impact event… 

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