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Electrical & Computer Engineering
Presentation by:Andrew FriedenMatthew Weydt
Nick SetzerTyler Dunn
CDR 2011 – Team Gong
2Electrical & Computer Engineering
Presentation Overview
Main Goal Recap from last time Flow Diagrams Spending Gantt chart Demo
3Electrical & Computer Engineering
Main Goal
To design and build a device that will determine whether it would be cost effective to install solar panels on a customer’s roof.
4Electrical & Computer Engineering
Project Overview
Name: Self Sustaining Solar Sensor Uses Arduino microcontroller, GPRS transmitter,
analog light sensors and android application to track data
Self powered using its own solar panel Our device will give real time data, angle of
power optimization, and dollar value feedback to the customer
5Electrical & Computer Engineering
Design (Pyranometer Array)
13 sensors Silicon Photodetectors Temperature sensor for solar efficiency
6Electrical & Computer Engineering
Design Continued.
Pyranometer array on half sphere• Uses many sensors to measure irradiance• Irradiance is used to calculate electrical efficiency of
solar panels• Pyranometers act as control points to find an optimal
direction for solar panel
http://www.instesre.org/construction/pyranometer/pyranometer.htm
7Electrical & Computer Engineering
Design Continued.
Application will have calculator to do most/all of the data processing• Energy calculations for electrical efficiency from
irradiance• Optimal direction algorithms
8Electrical & Computer Engineering
Data Flow Diagram
Arduino Device
Micro Controller + SD card
GPRS Transmitter
TCP Packet with JSON encoded data
Android Device
Php script
MySql Database
Application pulls from Database
Interpolation Algorithm giving real time results to customer
9Electrical & Computer Engineering
Arduino Device
Arduino Device
Micro Controller + SD card
GPRS Transmitter
TCP Packet with JSON encoded data
Android Device
Php script
MySql Database
Application pulls from Database
Interpolation Algorithm giving real time results to customer
10Electrical & Computer Engineering
Transmission Phase
Arduino Device
Micro Controller + SD card
GPRS Transmitter
TCP Packet with JSON encoded data
Android Device
Php script
MySql Database
Application pulls from Database
Interpolation Algorithm giving real time results to customer
11Electrical & Computer Engineering
Android Device
Arduino Device
Micro Controller + SD card
GPRS Transmitter
TCP Packet with JSON encoded data
Android Device
Php script
MySql Database
Application pulls from Database
Interpolation Algorithm giving real time results to customer
12Electrical & Computer Engineering
Spending
Current spending total to date: ~$350 Money left to date:~$150 Estimate for production value for unit:~$100-
$150 Current market technology: 6-8 design hours,
digital image processing units (example Solmetric Suneye) ~$2000
13Electrical & Computer Engineering
Gantt Chart
2/16/2012
14Electrical & Computer Engineering
Arduino Demo
Periodic Wakeup and Sleeps Read and Write to sd-card Sample analog sensors
15Electrical & Computer Engineering
Spline Interpolation
16Electrical & Computer Engineering
Transmission Demo
GPRS• Initialize the connection to the T-Mobile access point• Open a single IP connection to westhostsite.com• Construct a TCP Packet• Send a HTTP Post to /sdp/sendjson.php
17Electrical & Computer Engineering
Packet Image
Post Command
TCP Packet
18Electrical & Computer Engineering
Android Demo
Query the database for sensor data Displays graphs of data
19Electrical & Computer Engineering
How do we plan on demoing this?
Downloadable android application which we will also have on display
Sensor will real time update our phone and calculator
Users can see the power and money that could be saved by the ambient light in the room and a flashlight
Increase sensor and transmission rate for demo
20Electrical & Computer Engineering
Requirements
Low Power, maximum of 5v peak operating with drawing no more than 2A from our power supply
Android Application for calculating best performance of static solar panel, graphically displaying sensor data and a good estimate to dollar value saved by a user on a monthly basis
A hardware device capable of processing and transmitting sensor data to the internet
A sampling and transmission cycle that consumes less power than can be recharged via our solar panel
A sensor array able to accurately sense light intensity of the sun in a potential spot for solar panels
21Electrical & Computer Engineering
Project Management Andrew Frieden, CSE:
• Android Application development• Money saving, power saving and direction of optimal solar panel algorithms• Web Designer
Matthew Weydt, CSE:• PHP Web Server development• MySql Server development• Arduino programming• GPRS programming
Nick Setzer, EE:• Solar panel step down converter• Power supply system• Assist Arduino programming
Tyler Dunn, EE:• Sensor testing and Integration• Device construction• Power system design and testing• Assist Arduino and GPRS programming