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Sensor and method of detecting the condition of a turf grass

  • US 7,911,616 B2
  • Filed: 02/13/2006
  • Issued: 03/22/2011
  • Est. Priority Date: 08/01/2003
  • Status: Active Grant
First Claim
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1. A device for detecting a condition of turf grass, said device comprising:

  • an array of LEDs generating a cone of illuminating light;

    a photodetector receiving a cone of reflected light which is coincident with said cone of illuminating light;

    one or more photodetectors adapted to detect light from said array of LEDs;

    a feedback loop for actively controlling said array of LEDs based upon light from said array of LEDs; and

    a circuit for providing offset correction.

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