Autonomous robot localization

  • US 10,067,232 B2
  • Filed: 12/05/2016
  • Issued: 09/04/2018
  • Est. Priority Date: 10/10/2014
  • Status: Active Grant
First Claim
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1. A method of estimating a location of a lawn mowing robot in an environment having a plurality of synthetic surfaces at known locations with respect to a mowable space in the environment, the method comprising:

  • placing a lawn mowing robot in the environment, the lawn mowing robot comprising;

    a radiation source coupled to the lawn mowing robot;

    a detector coupled to the lawn mowing robot and configured to detect radiation reflected by objects in the environment;

    a modulator coupled to the radiation source and configured to modulate radiation emitted from the radiation source; and

    a controller configured to controllably direct radiation from the radiation source to scan the environment, and to vary at least one of an output power of the directed radiation or a scan rate of the directed radiation as a function of detected radiation reflected from one or more of the synthetic surfaces, wherein the controller is configured to direct the modulator to vary a radiation beam focus in response to detection of reflected radiation; and

    using the controller to controllably direct the radiation from the radiation source to scan the environment and determine the location of the lawn mowing robot based on the detected reflected radiation.

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