SOLAR POWER OPERATED TABLE FOR CHARGING ELECTRONIC GADGETS

The objective of the work is to apply solar power for charging electronic appliances namely iPhones. The circuit is designed for low ampere and high ampere charging by using PROTEUSsoftware and fabricated and tested for its performance. The time required for full charging of iphone5 with 1A charging is 90 minutes whereas it is only 50 minutes with 2A charging port. Solar power operated table can be developed by the companies for charging electronic gadgets such as mobile phones that can be employed in public places such as parks, bus stations, and airports. Another feature of this product is that three consumers can charge at a time. Charging of electronic gadgets can be done by the common public by drawing power from the battery charged by solar power thereby reducing consumption of electricity from the main grid. The system with 1A and 2A charging of i-phones using solar power operated battery is unique and new to the locality of Caledonian college of engineering and the work can be extended to other parts of Sultanate of Oman

Off-Grid mobile phone charging systems for rural energy needs

For several decades, rural electrification has remained a formidable challenge, particularly in Nigeria. Financial constraints, difficult rural terrain, inefficient policy, and a lack of industrial community development have all contributed to the grid expansion problem in these areas. These areas are energy-deficient, and their energy demands to keep up with cutting-edge communication technology are constantly rising. As a result, rural areas are confronted with the issue of charging. Consequently, many rural residents are forced to rely on diesel/petrol generators or travel long distances and pay a premium to have their mobile phones charged. Thus, this paper proposes an off-grid solar-powered charging system as an alternative, sustainable solution to meet rural mobile phone energy demand. The methodology employed six-tier architectural features, with the economic comparison metric based on net present value and payback period. Furthermore, the proposed model's performance analysis revealed that the charging rate is dependent on the phone battery type and charger type. Furthermore, the off-grid mobile charging system has a higher net present value ($20,658US) and a shorter payback period of 2.5 years than the alternative investment of a gasolne generator

Supercapacitor in battery charges of photovoltaic panel: analysis of the technical feasibility

The power generation from photovoltaic sources is variable and may contain unhoped fluctuations, which can be relieved by using energy storage systems. However, there is a technical contradiction in extracting the maximum power from a photovoltaic panel and the charge cycle of a battery. To overcome this problem, this paper presents an improvement consisting in a collaborative association of lithium ion batteries and supercapacitors showing the technical feasibility in a photovoltaic system. The structure of the energy conversion system was developed and was set up the converter’s configuration, design and operation simulation. The power management of full system implementation was simulated and the results are presented. The proposed system development and it technical analysis was carried out for both situations, with and without the use of supercapacitor. It was concluded that the supercapacitor in the photovoltaic systems bring better charging conditions, resulting in shorter charging times and better system performances.info:eu-repo/semantics/publishedVersio

Disc Golf Locator

Noah Sanor Major: Computer Engineering Project Sponsor: The Department of Electrical and Computer Engineering Number of Credits: 6 Disc Golf Locator The purpose of this project was to develop a device that could help a player locate a disc used in disc golf. The device could attach to the disc and track the location and movement of the disc. In addition, the device could transfer this data to a smartphone application and emit a loud noise to aid in locating the disc. On this project, I developed the smartphone application to communicate with the device. The application transferred the saved data from the device, plotted it on a map of the golf course and calculated statistics on each throw. The work that I did on the application was very helpful to me, because it allowed me to learn about Android development, Bluetooth LE technology and the Java programming language. Overall, the application provided the project with significant value, because it provided a detailed look at the way a player throws the disc and allows that player to improve based on the statistics of his or her previous throws

Disc Golf Locator

Disc golf is a game similar to traditional golf where players throw small plastic discs into chain-link nets. Disc golf courses cover several acres containing lakes, small wooded areas, large bushes, and grassy fields. It is not uncommon to accidentally throw a golf disc into the woods or bushes, so it is the goal of this project to create a device to locate the disc and make suggestions for the player to improve performance. A small device will be attached the disc which will track its location and flight characteristics. The device will contain a GPS receiver, an inertial measurement unit (IMU), data storage device, wireless transfer device, and an audio alarm to locate the disc. The GPS will record the flight path of the disc and the IMU will measure flight characteristics which will be stored locally on the disc during flight. After the disc is thrown and recovered, players will be able to use a smartphone app to retrieve the flight data from the tracking device by wireless communication. The smartphone app will plot the flight path on a map and analyze the inertial data to make suggestions for players to improve their throws

MPPT Solar Charge Contoller For Portable

The purpose of our senior project was to design and prototype an MPPT charge controller for small capacity PV panels under varying temperature and irradiance conditions to charge portable devices. In this paper we discuss our research, simulation, design, and testing to develop an MPPT solar charge controller. Furthermore, we presented our results and findings from testing our design. An MPPT solar charge controller is feasible and affordable if implemented on a PCB board. Due to MPPT’s affordability and increased efficiency under dynamic conditions, an MPPT solar charge controller for portable devices would be more effective than solar chargers currently sold without MPPT

Efficient use of solar chargers with the help of ambient light sensors on smartphones

This paper discusses the possibilities to measure the amount of light with the help of portable devices such as mobile phones and tablets. Focus is directed to the accuracy of the ambient light sensor on smartphones in order to obtain the illuminance indoors and the solar radiation level outdoors. In general, information on the ambient conditions is vital to improve the performance of solar chargers. For example, if users are able to allocate beneficial locations to deploy solar chargers inside buildings, up to 100 times more energy can be gathered during the same periodic time. Similarly, under outdoor environmental conditions, solar modules can be aligned better towards the sun to increase the possible amount of output power. We analyse the accuracy of ambient light sensors which are available in today's low-cost and upper-class smartphones. Additionally, we present calibration strategies for ambient light sensors in order to minimise the error between conventional measurement equipment and mobile phones

Smartboard for surfing

The Internet of Things has democratized the use of sports' monitoring devices. The majority of these devices, available on the market, are targeted to the fitness practice creating the necessity of having different solutions for different sports. This work focuses on the development of a low-profile surf monitoring device capable of acquiring the required data for an existing algorithm developed by Fraunhofer Portugal. The resulting system should support long periods inside the water (low-power and waterproofed) without interfering with the athlete's performance (low-profile) and be able of transmitting the acquired data for an external device. Due to project's requirements, some of the technologies were already selected (microcontroller, gyroscope, magnetometer, accelerometer and GNSS module). However other technologies such as: the wireless communication system, storage method and power system needed to be selected. For the first, the system data throughput was estimated and the technology with the best relation throughput vs. power consumption was selected. To select the storage method, a survey was conducted to estimate the relation between each technology's price and data size. To select the power system, two studies were conducted in order to infer the hypothesis of supplying the system with photovoltaic cells, increasing the autonomy during a surf session: a power consumption study to estimate the system's power requirements and a solar irradiance study to predict the required area of photovoltaic cells. In order to determine the impact of having epoxy resin, commonly used to cover surf boards, some tests were conducted by applying this resin over the cells and measuring the output power

Minimális kimeneti teljesítmény meghatározása energy harvesting prototípushoz: egy esettanulmány mobiltelefon specifikációkra

A mikro mértékű “energy harvesting” megoldásokra világszerte, szinte minden területen óriási igény van. Különösen, amikor a mobiltelefon élettartamát illeti, hiszen a használati követelmények nem megfelelően gondoskodnak a képességek szerinti technológiai fejlesztésekről. Ebben a kiegyensúlyozatlan helyzetben az akkumulátor technológia és a mobiltelefon fejlődése között hatalmas különbség van a tudományos kutatásokban is. Azonban egy hatékony rendszerre van szükség, amely képes a mobiltelefon töltésére akkor is, amikor messze vagyunk az áramforrástól. A kutatók figyelmet fordítanak a könnyen elérhető energiaforrásokra, amelyek töltési célokra “beszüretelhetőek”. Az ilyen erőfeszítésekkel számos megoldás érhető el, de számos akadály is rejlik bennük, mint például a tervezés, a kompatibilitás és ami a legfontosabb, hogy minden mobiltelefon készülék különböző paraméterekkel rendelkezik. Ez a cikk bemutatja a különböző telefon modellek specifikációit, valamint egy adatlapot állít elő, amely meghatározza a minimális kimeneti teljesítmény követelményeket készenléti és beszélgetési időre vonatkozóan ideális körülmények között