Cellular-Enabled Remote Camera System

Team Members Damion Cuevas Power Systems Sensors Research Josh Lunn Hardware interfacing Web page design Research Tyler Poschel Team Leader Hardware interfacing Research Justin Harmond Power Systems Sensors Research

Overview I.Problem II.Solution III.Prototype Design Refinements IV.Test Plan V.Testing VI.Questions

I. Problem What is the problem? Current remote surveillance systems use limited resolution cameras, while high-resolution surveillance systems do not have remote transfer.

II. Solution What is the solution? The CellVeillance will allow for remote capture and transfer with an off-the-shelf digital camera.

III. Prototype Design Refinements Refinements include: New 32-bit ARM7 processor (Texas Instruments TMS470 Family) New USB reader (GHI Electronics USBwiz™) New EDGE-compatible cellular radio (Motorola G24) The CellVeillance is divided up into four major subsystems: Power – Justin Motion Detection – Damion Wireless Communication – Josh and Tyler Camera Compatibility – Josh and Tyler Each of these subsystems have been designed and tested with the technical and practical constraints in mind.

III. Prototype Design – Practical Constraints TypeNameDescription SustainabilitySelf TestThe device must be capable of remotely performing a self test. SustainabilityUpgradeableThe device must be capable of accepting firmware upgrades. Self Test: - Provides assurance - Capability to test all systems individually Upgradeable: - Add functionality - Fix bugs

IV. Test Plan ConstraintTest Plan Battery LifeContinuous transmission: 10 hours Or standby mode: 72 hours And normal mode: 2 hours Ammeter Data Transmission Compatible with GPRS cellular network Transmit images via GPRS network PortabilityPhysical dimensions of 12”L x 6”W x 6”D Ruler Motion Detection Distance of 30 feet at a 90-degree viewing angle Protractor and measuring tape CompatibilityCompatible with an off-the-shelf digital camera Buy a camera and use it

V. Testing - Power Supply B.B. 12 V 7.5 Ah SLA Battery [2] ConstraintDescription Battery LifeThe device must be able to transmit data continuously for at least 10 hours and persist in standby mode for up to 72 hours without recharging, after which it can resume full functionality for 2 hours. Manufacturer Specifications Nominal Voltage12 Volts Rated Capacity7.5 Ah Total Mass5.9 Pounds Calculated Run Time at 650 mA11.5 Hours Self Discharge Rates 91% After 3 Months 82% After 6 Months 64% After 12 Months

V. Testing – Power Supply - Results System Current DrawPeukert’s Equation Idle with Camera on50mA T = C / I System Transmitting650mA T = Time (Hours) C = Battery Capacity (Ah) I = Current (Amps) Panasonic Battery Transmitting:T = 7.5Ah / 650mAIdle State: T = 7.5Ah / 50mA T = 11.5 Hours T = 150 Hours

V. Testing - Solar Panel Manufacturer Specifications Nominal Voltage9 Volts Rated Capacity350 mA Total Mass5 Ounces Size W” x L”4 1/2” x 8 1/4” SolarWorld 9 V 350 mA Solar Panel

V. Testing – Solar Panel - Test Average Current Output Direct Sunlight 350 mA Shady Conditions 130 mA Time to Recharge Battery 24 pictures per day = 1 hours transmitting = 23 hours idle 1 day power consumption = 1.8 Ah In direct sunlight it takes 5.1 hours of recharging to completely recharge our battery.

V. Testing - Portability ConstraintDescription PortabilityThe physical dimensions must be less than 12 inches high, 6 inches wide, and 6 inches deep.

V. Testing - Motion Sensor ConstraintDescription Motion Detection The device must detect motion up to a distance of 30 feet at a 90-degree viewing angle. Panasonic PIR Sensor [3]

V. Testing - Motion Sensor - Tests

V. Testing - Motion Sensor – Results Manufacturer SpecificationsMeasured Specifications Maximum Detection Range32.8'40’ Maximum Horizontal Viewing Angle110 o Input Voltage3.3 V Output TypeDigital (3.3 V)Digital (3.28 V) Max Current Draw60 µA~60 µA

V. Testing – Web Interface

V. Testing – Wireless Transmission ConstraintDescription Data Transmission The device must be compatible with the GPRS cellular network. Motorola G24 Radio [4]

V. Testing – Wireless Transmission

V. Testing – Wireless Transmission - Tests File SizePoor Signal Strength -111 dBm < X < -93 dBm Good Signal Strength -93 dBm < X < -73 dBm Excellent Signal Strength X > -73dBm 50 kB12 seconds 4.17 kB/s 10 seconds 5 kB/s 7 seconds 7.14 kB/s 200 kB50 seconds 4 kB/s 39 seconds 5.12 kB/s 27 seconds 7.41 kB/s 400 kB97 seconds 4.12 kB/s 77 seconds 5.19 kB/s 55 seconds 7.27 kB/s 1 MB242 seconds 4.13 kB/s 193 seconds 5.18 kB/s 134 seconds 7.46 kB/s

V. Testing – Camera Compatibility ConstraintDescription CompatibilityThe device must be compatible with an off-the-shelf digital camera. Digital Camera SD Card Buffer USB-SD Card Reader Cable to Radio

V. Testing - System Test

VI. Questions?

VII. References [1] D. Cuevas, J. Harmond, J. Lunn, and T. Poschel, “CellVeillance Technical and Practical Design Constraints,” unpublished. [2] (15, April 2007) DigiKey. [Online] Available: os/BP12-6-T2.jpg [3] (15, April 2007) Panasonic Electric Works Corporation of America. [Online] Available: ml [4] (01, October 2007) MOTODEV. [Online] Available: