Glass Break Detection System Midterm Presentation October 7, 2010

Dennis Narcisse Synapse Programming and troubleshooting Matthew Marsh Hardware Design, Signal Processing Christian East Synapse Wireless Comm. Mark Lynn Hardware Implementation, Signal Processing Dr. Winton Advisor

 Introduction  Problem Statement  Solution  Constraints  Technical  Practical  Hardware Diagram  Technical Tradeoffs  Progress  Timeline

 Glass Break Detection System (GBDS) is an alarm system that detects the frequency of breaking glass  Consist of a central unit and multiple detection units  System communicates wirelessly among all units

 Current glass break alarms operate:  as stand alone units  hardwired to a central unit  High cost for complicated designs

 Use low power wireless technology  Central unit communicates to all detection units  Simplified design to lower overall cost

Central Unit Detection Unit

NameDescription RangeThe detection unit must detect glass breaking up to 25 feet. AccuracyThe detection unit must detect the noise frequency emitted by the breaking of glass to prevent false alarms from normal household sounds. Supply VoltageThe detection units must be battery powered. The central unit must be wall powered. Transmission DistanceCentral and detection units must be able to wirelessly communicate within a 33 to 246-ft range. DisplayThe central unit must have a display screen that is easily read.

 Economic  The GDBS must be less than $200

 Manufacturability  The GBDS must be simple in its design

Sensing Block MCU Wireless Comm. DisplayMCU Wireless Comm.

MicrophoneOp amp MCU

 Wireless  Zigbee  Synapse  Texas Instruments  Signal Processing  Hardware  Software

 XBee Pro  Data Rate: 250 kbps  Indoor Range: 300 ft  Frequency Band: 2.4 GHz

 RF100PC6  Data Rate: 250 kbps  Indoor Range: 1000 ft  Frequency Band: 2.4 GHz

 CC2500  Data Rate: 250 kbps  Indoor Range: 260 ft  Frequency Band: 2.4 GHz

ManufacturerModelResourcesRangePriceChoice ZigbeeXBee ProNo300’$32 SynapseRF100PC6Yes1000’$35 TICC2500No240’$5

 Hardware  Op amp  Software  Mathematically

 Op amp  Adsf  Asdf  asdf

 Mathematically  Adsf  Adsfa  asdfas

PartSpeedAccuracyDifficultyChoice OpampFasterLess MathematicallySlowerMore

 Central and detection unit’s hardware completed

 Beginning to program microprocessor, wireless network, and display

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