Not only are LEDs cost effective and environmentally friendly, but they could also provide mankind with a future source of food. In complete accord with many scientists’ predictions, University of Georgia doctoral student Erico Rolim de Mattos foresees a world in which land overdevelopment, exploding human populations, and global climate change will leave mankind without enough food to sustain humanity. Whilst this scenario may seem a little over the top, it is in a very real possibility that is troubling the minds of specialists from organisations like the United Nations and NASA.
Mattos has come up with a possible solution which has won him a $30,000 scholarship to Singularity University. A Silicon Valley think tank, Singularity University seeks to find solutions to the planet’s most pressing challenges via advanced technologies. The solution Mattos has proposed involves the use of advanced computer monitoring systems and LED lights to create artificial light in structures dubbed ‘vertical farms’. ‘Vertical farms’ are to be immense greenhouse-style buildings whose function is to produce indoor food crops. Mattos said of his idea: “The big problem with vertical farming is emerging consumption. Using this intelligent light system that we are developing here, we can make vertical farms feasible from the point of view of lights”.
Massive amounts of electricity are required by large indoor farms using traditional grow lights. Mattos’ system would be much more efficient as LEDs would be used above the crops to provide them with light. A device called a chlorophyll fluorometer would measure the plant’s energy use efficiency when a LED is being shined upon it, sending the data to a computer. The computer will then know whether the plants need less light, more light, or light of different wavelengths and can adjust the appropriate LEDs accordingly. The entire process would take place in real time and it would be a foolproof system that ensures plants receive optimum lighting conditions without power being wasted unnecessarily as it would be if traditional bulbs were used.
Mattos said of his system: “It is like the plants and the lights are talking. If the plant is not using the light, the chlorophyll fluorometer can feel this and send a message to the computer.”
Currently it does not make economic sense to implement vertical farms on a large scale so Mattos is working to boost production and reduce the cost of his system which could prove essential if the global food crisis does occur.
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