Sökning: "Visible light sensing"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Visible light sensing.

  1. 1. Battery-free Visible Light Sensing

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för datorteknik

    Författare :Andreas Soleiman; [2019]
    Nyckelord :Networked embedded systems; Visible light sensing; RF backscatter; Energy harvesting;

    Sammanfattning : In this thesis, we show that it is possible to design a battery-free light sensing system that can sense and communicate hand gestures while operating fully on harvested power from indoor light. We present two main innovations that push our system to tens of microwatts of power to enable battery-free operation. LÄS MER

  2. 2. Genomskinlig touchsensor för pålitlig styrning av RGB-lysdioder

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Olle Calderon; [2017]
    Nyckelord :Touch sensor; capacitive sensing; RGB control; dielectric constant; Touchsensor; beröringssensor; kapacitiv sensorteknik; RGB-styrning; dielektrisk konstant;

    Sammanfattning : Many electronic products of today utilize some form of touch technology. Looking at everything from smartphone screens to ticket vending machines, it is obvious that the number of applications is big and the demand is huge. LÄS MER

  3. 3. Estimating and evaluating GPP in the Sahel using MSG/SEVIRI and MODIS satellite data

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Gustav Wallner; [2015]
    Nyckelord :geography; physical geography; GPP; Sahel; Dahra; remote sensing; Meteosat; MSG; MODIS; SEVIRI; Earth and Environmental Sciences;

    Sammanfattning : The aim of this study was to use data from Meteosat Second Generation’s Spinning Enhanced Visible and Infrared Imager (MSG/SEVIRI) to calculate the gross primary production (GPP) in the Sahel region of Africa for 2011 and 2012. GPP was calculated using the light use efficiency method, which relates GPP to the absorbed photosynthetically active radiation the light use efficiency. LÄS MER

  4. 4. MODIS NDVI satellite data for assessing drought in Somalia during the period 2000-2011

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Mohammed Alwesabi; [2012]
    Nyckelord :remote sensing; vegetation index; drought; Somalia; geography; physical geography; Earth and Environmental Sciences;

    Sammanfattning : This thesis studied the drought monitoring and assessing in Somalia environment during the period 2000-2011 with more details about the drought in 2010- 2011. Time series analysis of remote sensing data as well as rainfall data were used to achieve the aim of the study. LÄS MER

  5. 5. Laser Music System : Implemented using lasers, infrared sensors, photocells and a Arduino Microcontroller

    Kandidat-uppsats, Högskolan i Halmstad/Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE); Högskolan i Halmstad/Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE)

    Författare :Astra Woodruff; Burak Görmez; [2012]
    Nyckelord :laser system; electronic instrument; microcontroller; IR range sensors; laser diodes; photocells; detector circuit; MIDI; triangulation;

    Sammanfattning : A Laser Music System has been created, that combines a laser and light sensor system with an infrared distance sensing system that detects the position of a user’s hand when it intersects one or more of the individual laser beam. The laser beams, which are made visible by a small amount of smoke in a dark room, provide visual guidance to the user to reduce the difficulty of using a non-contact instrument as well as enhancing an appealing optical effect for the user. LÄS MER