Essays about: "Light-Emitting Diode LED"

Showing result 1 - 5 of 24 essays containing the words Light-Emitting Diode LED.

1. 1. Analysis of energy efficient heat and lighting systems in a subarctic greenhouse

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : William Sigvardsson; [2023]
   Keywords : Energy efficiency; Sub-arctic greenhouses; Energy measures; Greenhouse climate control; Greenhouse technology; CFD;

   Abstract : 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

3. 2. Investigation and evaluation of optical distance sensors

   University essay from Uppsala universitet/Signaler och system

   Author : Olof Wigzell; [2022]
   Keywords : optics; radiometry; senssor; microcontroller; irradiance; circuit design; calibration; validation;

   Abstract : 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

4. 3. Performance Analysis of Li-fi Communication System

   University essay from Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

   Author : Katrun Nada; [2022]
   Keywords : ;

   Abstract : 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

5. 4. Design of LED setup for measuring tandem solar cell subcell J-V behaviour

   University essay from

   Author : Kristina Bergström; Mohammed Nour Kamalmaz; Erik Lindvall; [2022]
   Keywords : Tandem solar cell; LED; background light; bias; arduino; processing; subcell;

   Abstract : 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

6. 5. Investigating the use of Semiconductor Nanowires for Neural Networks

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Alfredo Serafini; [2022]
   Keywords : FDTD method and simulation; optical broadcasting neural network; optical communication of nanowires; sub-wavelength absorption.; Physics and Astronomy;

   Abstract : In this work, we intend to employ nanowires for the realisation of an artificial neuron which can be used to design a neural network that will guide the new generation of non-von Neumann architectures such as Neuromorphic Computing. Possible applications are strongly related to Neuromorphic architectures and artificial intelligence, such as high-performance computers, robotics hardware and autonomous drones. READ MORE