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Showing result 1 - 5 of 35 essays matching the above criteria.

1. 1. Design Guidelines of A Low Power Communication Protocol for Zero Energy Devices

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Jiayue Zhang; [2023]
   Keywords : Energy efficient communication protocol; sensor data transfer; zero energy devices; battery-less; energy harvesting; Energieffektiv kommunikationsprotokoll; sensordatöverföring; “zero” energienheter; batterifria; energy harvesting;

   Abstract : Lågströmskommunikationsprotokoll såsom 6LoWPAN har använts i stor utsträckning för applikationer som kräver mindre energiförbrukning för trådlös kommunikation på korta avstånd, exempelvis IoT-enheter. Eftersom antalet sådana enheter ökar blir det allt viktigare att överväga ambient energy harvesting som en energikälla för att driva sådana enheter. READ MORE

3. 2. ZigBee-based climate measurement system for thermal comfort in traffic busses

   University essay from KTH/Hälsoinformatik och logistik

   Author : Talib Almosawi; George Karanta; [2021]
   Keywords : Measurement system; wireless personal area network; ZigBee; radio communication; Raspberry pi; microcontroller; Mätsystem; wireless personal area network; ZigBee; radiokommunikation; Raspberry pi; mikrokontroller;

   Abstract : This thesis describes the work process two (WP2) of a project led by the traffic administration in Stockholm to achieve the passengers' thermal comfort in traffic buses.  The purpose of this thesis is to design and implement a measurement system comprised in eight measurement position in a bus. READ MORE

4. 3. Analysis of communication protocols used for wireless Sensor networks

   University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

   Author : Racha Salim; [2021]
   Keywords : Wireless sensor networks; LEACH; WSN communication protocols; energy model of WSN.;

   Abstract : Wireless Sensor Networks (WSNs) have attracted growing interest from both realcustomers and the scientific community in the recent years due to their powerfulcapabilities and varied applications. Each wireless sensor node relays data to thebase station (BS) directly in the direct communication protocol. READ MORE

5. 4. Life Cycle Cost of Smart Wayside Object Controller

   University essay from KTH/Spårfordon

   Author : Filipp Zarov; [2021]
   Keywords : railway signalling system; interlocking; hardware; Object Controller; Smart Wayside Object controller; Lifecycle Cost; renewable energy sources; järnvägssignalsystem; ställverk; hårdvara; Utdelar; SWOC; livscykelkostnad; förnybara energikällor;

   Abstract : In a regional railway signalling system, object controllers are the devices responsible for controlling Track Side Equipment and act as interfaces for TSE with the interlocking computer and the Traffic control system. However, associated cabling (signal and power cabling) and civil works pose a major capital investment and it is a source of significant Capital and Operational expenses, particularly in rural areas, where accessibility andconnectivity to power grid and to the interlocking are a problem. READ MORE

6. 5. Energy Efficiency of 5G Radio Access Networks

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Saivenkata Krishna Gowtam Peesapati; [2020]
   Keywords : Resource adaptation; Activity factor; Power modeling; Energy-efficiency; 5G; Q-learning;

   Abstract : The roll-out of the fifth-generation (5G) wireless networks alongside existing generations and characterized by a dense deployment of base stations (BSs) to serve an ever-increasing number of users and services leads to a drastic increase in the overall network energy consumption (EC). It can lead to an unprecedented rise in operational expenditure (OPEX) for the network operators and an increased global carbon footprint. READ MORE