iSecurity Mid-Semester Presentation October 9, 2012

Team Members Jonathan Lalo Read Sprabery Brandon Dahler John Gazzini Dr. Yogi Dandass Computer Engineer Team Leader Image comparision Wifi Establisment Software Engineer Image format translation Image Transmission Server programming Software Engineer Server programming Image comparison Image Storage Computer Engineer iPhone application Image comparison

Outline Problem Solution System Overview Constraints ‒ Technical ‒ Practical Technolocies & Part Choice Progress Timeline

Problem A need exists to monitor homes while away at various locations. Devices that address this are expensive and difficult to install, making them inaccessible to the majority of potential users.

Solution iSecurity: Camera & WiFi device configured through iPhone application Notifications sent directly to the iPhone Device requires home wireless internet connection Minimal user interaction required for setup

System Overview

Configuration Overview

Operation Overview

Technical Design Constraints Image Processing: 10 frames per second, motion detection between frames. Wifi: Support for WPA Personal, WPA2 Personal, and WEP. Power: Single 120VAC Connection (from standard wall socket). Storage: Still frames stored on removable SD card when motion is detected. Range: Motion must be detectable at 40ft.

Image Processing Performance Frame Analyzation in under 75ms ‒ Comparison between frames ‒ Storage ‒ Transmission Wireless Standards Basic requirements for Wi-Fi module ‒ WEP, WPA Personal, and WPA2 Personal ‒ Ad-hoc mode available for configuration

Storage Removable SD Card ‒ Adequate size and speed Power 120V AC – Included adapter Range Motion detectable at 40 feet ‒ Algorithm should be adjustable by the consumer

Practical Constraints

Economic IZON - Close competitor [1] ‒ $130 price point, similar feature set ‒ Includes audio iSecurity ‒ $99 price point ‒ $49.99 manufacturing cost ‒ Competitive with ability to profit

Sustainability Device relies on external server ‒ Product Takes Off  Load problems  Need to be scalable and extensible for new products ‒ Product fails / Business Fails  Server still needs to be maintained, possibly downgraded  Continued support for existing products, possibly with degraded performance

Technology and Part Choices

Server Technologies Windows Enterprise vs. Open Source Familiarity with Windows server technologies ‒ ASP.NET ‒ Windows Server access for startup company Many other options still open with Windows ‒ Ruby on Rails ‒ PHP

Initial Hardware Wi-Fi Module MicroChip: MRF24WB0MA/MB : $24 [2] ‒ Each module supports WPA2 ‒ TCP/IP stack is + library included Camera MT9T031C12STC : $20 [3] ‒ 48-pin CLCC ‒ Bayer RGB

Initial Hardware Image Processor Propeller – ($10) [4] ‒ 8 cores ‒ Beta GCC compiler ‒ Lack of familiar tools ‒ Cheapest development board ‒ Massively parallel

Current Hardware – Processor Raspberry Pi [5] ‒ 256 MB RAM ‒ 700 Mhz ARM Processor ‒ Linux Operating System ‒ Cheap ($35) ‒ Reduced development time ‒ Options for hardware generalized and expanded

Current Hardware – Wi-Fi Module Edimax EW-7811Un [6] ‒ Supports aspects we were looking for ‒ Small size ‒ Cheap ($10) ‒ Compatible with Raspberry Pi

Current Hardware – Camera Any known Linux-compatible camera Rosewill RCM-816V [7] ‒ $16 ‒ 1.3M pixels ‒ USB 2.0 ‒ UVC compliant, so Linux compatible

Progress Parts acquired and assembled Code Sharing via Subversion established Server code-base setup Saving to SD card on device Wi-Fi connectivity established on device

Timeline September 26 Order Parts October 14 Save pictures to SD card, begin motion detection, basic accounts on server November 14 Detect motion on device, broker connections via server, send pictures over Wi-Fi November 30 iPhone app full functionality, Server functionality December 1 Begin optimization

References [1] [2] [3] [4] [5] [6] [7]

Questions