Essays about: "light emitting diode"
Showing result 1 - 5 of 31 essays containing the words light emitting diode.
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1. Analysis of energy efficient heat and lighting systems in a subarctic greenhouse
University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikAbstract : This report studies a subarctic greenhouse located in Nikkala, Sweden called Nikkala handelsträdgård. Through a visit to the greenhouse coupled with the creation of two simulation models this study investigates the differences in energy demand with water-carried and air-carried heating systems, high pressure sodium lights and Light emitting diode lights and insulation in parts of the greenhouse without a active cultivation. READ MORE
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2. Investigation and evaluation of optical distance sensors
University essay from Uppsala universitet/Signaler och systemAbstract : Optical sensors are among the sensors that are often used for distance measurements. An optical distance sensor is basically made of a light emitter (Tx) such as a light emitting diode (LED), a light receiver (Rx) such as a photosensitive transistor, and a circuit supporting the operation of the Tx and Rx. READ MORE
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3. Performance Analysis of Li-fi Communication System
University essay from Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskapAbstract : Li-fi is a promising technology in today’s communication system. It may bringup the many benefits over other communication technologies. Since light isthe main source to provide data, and this is available everywhere around, itmay compete with other technologies that use radio communication. READ MORE
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4. Optimization of Light Conditions in a Greenhouse Environment : Reducing energy consumption and increasing yield using mechatronics
University essay from KTH/Skolan för industriell teknik och management (ITM)Abstract : The present thesis explores the possibilities of reducing electrical energy consumption in a greenhouse environment through the construction a demonstrator system. The demonstrator system is imagined to be used in a vertical farming setup and is fully automated. The system achieves two main actions. READ MORE
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5. Design of LED setup for measuring tandem solar cell subcell J-V behaviour
University essay fromAbstract : The need to accurately measure multi-junction (MJ) tandem solar cells' subcell current-voltage characteristics is increasing due to the vital information they provide about the efficiency, stability, and longevity of the cells. These measurements are rather difficult compared to their counterpart single-layer solar cell measurements. READ MORE