Patent ID: 11957087
Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Field: Computer technology (Electrical engineering)
Classification: CPC A  G  H  Y | IPC A  G  H

Claim 2:
3. The Internet of Things (IoT) based hydroponic farm system of claim 2, further comprising:
a second plurality of sensors located in each of the plurality of hydroponic plant growing zones, including:
a pH sensor configured to measure a pH of the nutrient solution;
a carbon dioxide sensor configured to measure a carbon dioxide concentration of the atmosphere in each hydroponic plant growing zone;
an electric conductivity sensor configured to measure at least one of a nutrient concentration, a salt concentration, an impurity concentration and to assess a quality of the nutrient solution; and
a light sensor configured to measure a light intensity in each hydroponic plant growing zone;
a second plurality of actuators located in each of the plurality of hydroponic plant growing zones, including:
a valve connected to the fluid transfer system, wherein the valve is configured to control nutrient flow within the fluid transfer system;
a sprayer configured to spray nutrient solution on a root ball of each plant; and
a lighting system configured to irradiate each of the plants with light wavelengths in the range of 400 to 700 nanometers, wherein the light wavelength is selected based on the species of the plant;
wherein each of the second plurality of sensors is configured to generate second sensor signals and publish the sensor signals to the zone controller connected to the plurality of second sensors through the data distribution service middleware; and
wherein each of the second plurality of actuators is configured to receive actuation instructions from the zone controller as subscribers of the data distribution service middleware.