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VZPOSTAVITEV MERILNEGA SISTEMA ZA MERJENJE MOČI IN ENERGIJE ELEKTRIČNEGA KOLESA
DOBRAVEC, NEJC (Author), Ažbe, Valentin (Mentor) More about this mentor... This link opens in a new window

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Abstract
Diplomsko delo je zasnovano na merjenju toka in napetosti električnega kolesa ter izračunu njegove moči in energije. Izmerjene vrednosti so prikazane na različne načine: najprej na android napravi, na kateri je predstavljena zgolj številska vrednost meritev. Za grafični prikaz meritev pa sta uporabljna TFT LCD-zaslon, priključen na Arduino, ter program Processing, ki je namenjen prav grafični upodobitvi meritev na osebnem računalniku. Na tržišču imamo na razpolago najrazličnejše pripomočke in metode za merjenje napetosti in toka. Zagotovo med cenejše spada uporaba že kar dobro razvitega in razširjenega orodja Arduino. Le-ta obstaja v najrazličnejših velikostih, odvisno od načina uporabe ter od zahtevnosti projekta. Arduino ploščice imajo namreč različno število vhodov, izhodov in celo internetni priključek. Za merjenje toka je skupaj z Arduino ploščico najenostavneje uporabiti senzor ACS 712, ki deluje na principu Hallovega efekta in obstaja v treh različnih velikostih toka. Merjeno napetost je treba prilagoditi na velikost vhodne napetosti merilnega člena, in sicer z napetostnim delilnikom, sestavljenim iz dveh uporov. Eden izmed ciljev je tudi vse izmerjene vrednosti, ki smo jih izmerili z Arduinom in jih poslali preko bluetooth komunikacije, prikazati na android telefonu. Tudi na tem področju je možno uporabiti najrazličnejša programska orodja: od profesionalnih do bolj laičnih. V nalogi sta uporabljena precej razširjen MIT app inventor ter S2-terminal, ki sta namenjena predvsem začetnikom. Meritve so prikazane tudi v obliki grafa na LCD-zaslonu.

Language:Slovenian
Keywords:Arduino, android, napetost, tok, moč, ACS 712, bluetooth, Hallov efekt
Work type:Bachelor thesis/paper (mb11)
Organization:FE - Faculty of Electrical Engineering
Year:2016
Views:739
Downloads:204
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Secondary language

Language:English
Title:CONSTRUCTION OF MEASURING SYSTEM FOR POWER AND ENERGY OF ELECTRIC BICYCLE
Abstract:
This work is based on measuring the current and voltage of an electric bicycle and calculating its power and energy. One of our goals is to show results in different ways. The numerical value of the measurements will be showed on the smart phone. Both the TFT LCD screen connected to Arduino an the Processing program that can be used on a personal computer will be used for a graphical presentation. There are a lot of different accessories and methods on the market for measuring current and voltage. But the cheapest and the most widespread device is definitely Arduino. It is available in different sizes, depending on our needs and complexity of our project. These devices offer different numbers of analog and digital inputs and outputs and even an internet connection. The easiest way of current measuring is the use of ACS 712 sensor, working on principle of the Hall effectand available in three different sizes. The results have to be adapted to the size of the input current measurement with the voltage divider, made up of two resistors. Our goal is also to send the data from Arduino to an android device using bluetooth. There are a lot of different ways, both professional and laic, to do this. In this project we used the easiest way to display data on the phone by using the MIT App Inventor and the S2 terminal, both of them totally free of charge and designed for beginners. The measurements are also going to be displayed on the LCD display.

Keywords:Arduino, android, voltage, current, power, ACS 712, bluetooth, Hallov effect

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