Sökning: "Battery-free"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet Battery-free.

  1. 1. Exploring electromagnetic induction as a power source for interactive human-powered devices

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Elena Gonzalez Rabal; [2020]
    Nyckelord :Human Power Interaction; Electromagnetic Induction; Coil; Enconder; Interactive Prototype.;

    Sammanfattning : In the last decade, we have seen an increasing interest in the designing of interactive technology that is limited in energy usage to our bodily capabilities. This field is commonly referred to as Human-Power Interaction (HPI). The aim of HPI is to create battery-free devices that are powered solely from human interactions. LÄS MER

  3. 2. Energialstring för drivande av smart enhet utan batterier : Design av ett energialstrande system för smart sko genom piezoelektronik och solceller

    M1-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Clive Rudd; [2019]
    Nyckelord :PCB; smart shoes; energy harvest; piezoelectronics; supercapacitors; solar cells; Kretskort; smart sko; energialstring; piezoelektronik; superkondensatorer; solceller;

    Sammanfattning : Projektet beskriver ett tillvägagångssätt för att alstra energi genom solceller och piezoelektronik. Ett kretskortsbaserat system designades som utnyttjade superkondensatorer som lagringsenhet. Planen var att integrera systemet i en sko. LÄS MER

  4. 3. 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

  5. 4. Towards Long-Range Backscatter Communication with Tunnel Diode Reflection Amplifiers

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets elektronik

    Författare :Gustav Eriksson; [2018]
    Nyckelord :Amplified backscatter tag; Reflection amplifier; Battery-free; Long-range communication; Tunnel diode; Ultra-low power consumption; RFID; Frequency shift;

    Sammanfattning : Backscatter communication enables wireless communication at a power consumption orders of magnitude lower than conventional wireless communication. Instead of generating new RF-signals backscatter communication leverages ambient signals, such as WiFi-, Bluetooth- or TV-signals, and reflects them by changing the impedance of the antenna. LÄS MER

  7. 5. Towards Battery-free Radio Tomographic Imaging : Battery-free Boundary Crossing Detection

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Abdullah Hylamia; [2018]
    Nyckelord :battery-free; radio-tomographic-imaging; boundary-crossing; analog-backscatter; envelope-detector; radio-frequency; batterifri; radiotomografisk avbildning; gränsöverskridande; analogbakåtskridande; kuvertdetektor; radiofrekvens;

    Sammanfattning : Radio tomographic imaging (RTI) is a novel device-free localization technique which utilizes the changes in radio signals caused by obstruction to enable various sensing applications. However, the deployment of these applications is hindered by the energy-expensive radio sensing techniques employed in these systems. LÄS MER