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System and Method for Detecting the Absence of a Thin Nutrient Film in a Plant Growing Trough

  • US 20160183487A1
  • Filed: 12/24/2014
  • Published: 06/30/2016
  • Est. Priority Date: 12/24/2014
  • Status: Abandoned Application
First Claim
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1. A system for detecting the absence of a thin nutrient film in a plant growing trough comprising:

  • (a) a trough for use in a thin-nutrient-film agricultural system, said trough having a trough base across which the thin-nutrient-film passes; and

    (b) a high frequency RFID tag located in or below said trough base and operable to receive an interrogator signal and to transmit an authentication signal,such that, wherein an RFID reader passes over said RFID tag and transmits an interrogator signal, an authentication signal is generated only in the absence of a shielding layer of nutrient film, thereby indicating a failure of the nutrient film circulatory system.

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