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Systems and methods for measuring a bridge clearance

  • US 10,229,596 B1
  • Filed: 10/05/2017
  • Issued: 03/12/2019
  • Est. Priority Date: 10/05/2017
  • Status: Active Grant
First Claim
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1. A method for determining a clearance of an overhead obstacle using an optical detection system, the method comprising:

  • emitting rays of light from a vehicle over a range of angles towards a target region, the rays of light establishing a vertical angular span;

    receiving rays of reflected or scattered light from the target region corresponding to the emitted rays of light from the vehicle;

    determining a height of the overhead obstacle using the received rays of light, including;

    selecting a first received ray of light that interacts with the overhead obstacle;

    selecting two received rays of light that interact with a roadway underlying the overhead obstacle; and

    estimating a second received ray of light from the two received rays that interact with the roadway, the estimated second received ray and the first received ray corresponding to the same horizontal distance from the vehicle.

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