Team Everest Architectural Design Review

September 15, 2011

From: http://www.flickr.com/photos/troyismad/89419822/

Team Members

Larry Battle (CSE) Chris Brown (SE)

Bikash Acharya (CS) Erica Llaca (SE)

Overview

7/7/11

1. * Product Summary2. * Requirements

* Layers / Sub-layers* Testing

1. * Motivation2. * Flexibility3. * Feasibility

Product Summary

Customer Requirements1) The product will run in real time and have the results without lag.

2) The software shall process little response time

Customer Requirements

3) The product shall have minimally invasive hardware

http://www.blogcdn.com/www.engadget.com/media/2010/09/neurosky-mindwave-01-top.jpg

Customer Requirements

4) The product shall track all ranges of concentration

http://static.guim.co.uk/sys-images/Guardian/About/General/2009/6/30/1246373469711/Customers-use-computers-a-001.jpg

Customer Requirements5) The product shall have little to no notification of concentration awareness

http://www.remove-virtumonde.com/wp-content/uploads/2009/04/virtumonde-pop-ups1.jpg

Customer Requirements6) Must run on an average computer system.

http://media.photobucket.com/image/cpu%20magazine%20mods/jordan23james/100_4271.jpg

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Question: What are specs for an average computer system in 2011?

Image from: http://exonome.com/fj/phkl/open.jpg

Answer:

CPU: 2.0GHz dual-core or betterRAM: 2-4GBHard drive: 160GB+Video: 512MB - 1GBOS: Windows XP or better

http://au.answers.yahoo.com/question/index?qid=20100218213650AAFr5vA

7/7/11

Question: What are specs for an average computer system in 2011?

Image from: http://exonome.com/fj/phkl/open.jpg

http://hacknmod.com/wp-content/uploads/2009/04/messy-cables.jpg

ADS History

ADS History

ADS History

Overview of Layers

Server Image from: http://www.instablogsimages.com/images/2007/01/08/hp-mediasmart-server_48.jpg

Sub Layers

Input Sub-layer

Tasks* Communicate with the external devices* Simply the input data into categories.* Compress all the input into one object.

Database Sub-layer

Tasks* Allow our program to communicate with the database.

Manager Sub-layer

Tasks* Provide an API for interfacing with our program.

Event Handler Sub-layer

Tasks* Coordinate sub-layers communicate.

Analyzer Sub-layer

Tasks* Analyzes the user state and action history to determine if the an attention getter should be launched.

Check Sub-layer

Tasks* Does error checking for the sub-layers.* Calibrates the EEG.* Reports errors to the Manager sub-layers.

Browser Sub-layer

Tasks* Communicate with the web browser.* Controls when our program should be on and off.

7/7/11http://one7.files.wordpress.com/2010/06/browsers.jpg

Question: Which browser do you prefer?

Testing Driven Development

“Test-driven development (TDD) is a software development process that relies on the repetition of a very short development cycle” – wikipedia.org

4 main stages of TDD.

1) Write a test case.2) Watch it fail.3) Program it to pass.4) Refactor

Testing for I/O Layer

1) Can the input sub-layer process the input from the external devices within a reasonable amount of time?

2) Can the database sub-layer add, update, deletedata from the database?

3) Does the input and database sub-layers sent data to the appropriate location?

4) Does the input simplify the data correctly?

Testing Logic Layer

1) Can the Check Sub-Layer find and report errors?

2) Does the Event Handler send data to the function of the assigned Destination?

3) Do all the sub-layers communicate with the Event Handler correctly?

4) Does the Analyzer sub-layer launch an attention getter event when the user isn’t concentrated for a certain time period?

Testing Controls

1) Can the Browser Sub-Layer communicate with the browser?

2) Are the attention getters appearing on the screen forthe designated time?

3) Can the Browser Sub-Layer turn off our program when the browser is closed?

Motivation/ Flexibility

Possible Changes:- Event Handler helps abstracts the functions calls to the sub-layers.- Any changes to the inputs devices is handled by the Input Sub-Layer

Alternative Architecture 1

Changes:- Move the Manager Sub-Layer to the Controls Layer- Integrate the Check sub-layer into the Event Handler sub-layer.

Alternative Architecture 2

Changes:- Try to make each sub-layer connect to only one sub-layer.- Eliminate the Check and Event Handler sub-layers.

Feasibility

http://tamsconcretecanvas.files.wordpress.com/2008/11/obama_yes_we_can.jpg

Possible Hardware alternative

+ =+

Any Questions?

http://committeeofpublicsafety.files.wordpress.com/2010/02/cute-sad-kitten06.jpg