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Piezoelectric power generation for roadways

  • US 10,726,719 B1
  • Filed: 02/05/2019
  • Issued: 07/28/2020
  • Est. Priority Date: 02/05/2019
  • Status: Active Grant
First Claim
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1. A road signal system, comprising:

  • a piezoelectric layer, integrated with a surface that undergoes stresses with traffic passing over the surface, that includes one or more folds, such that multiple layers of piezoelectric material are vertically stacked and have a shared electrical power output;

    a power collection circuit configured to collect and store power from the piezoelectric layer; and

    one or more devices that receive electrical power from the power collection circuit responsive to traffic passing over the surface.

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