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Glass Break Detection System Midterm Presentation October 7, 2010
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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
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Introduction Problem Statement Solution Constraints Technical Practical Hardware Diagram Technical Tradeoffs Progress Timeline
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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
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Current glass break alarms operate: as stand alone units hardwired to a central unit High cost for complicated designs
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Use low power wireless technology Central unit communicates to all detection units Simplified design to lower overall cost
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Central Unit Detection Unit
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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.
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Economic The GDBS must be less than $200
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Manufacturability The GBDS must be simple in its design
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Sensing Block MCU Wireless Comm. DisplayMCU Wireless Comm.
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MicrophoneOp amp MCU
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Wireless Zigbee Synapse Texas Instruments Signal Processing Hardware Software
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XBee Pro Data Rate: 250 kbps Indoor Range: 300 ft Frequency Band: 2.4 GHz
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RF100PC6 Data Rate: 250 kbps Indoor Range: 1000 ft Frequency Band: 2.4 GHz
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CC2500 Data Rate: 250 kbps Indoor Range: 260 ft Frequency Band: 2.4 GHz
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ManufacturerModelResourcesRangePriceChoice ZigbeeXBee ProNo300’$32 SynapseRF100PC6Yes1000’$35 TICC2500No240’$5
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Hardware Op amp Software Mathematically
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Op amp Adsf Asdf asdf
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Mathematically Adsf Adsfa asdfas
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PartSpeedAccuracyDifficultyChoice OpampFasterLess MathematicallySlowerMore
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Central and detection unit’s hardware completed
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Beginning to program microprocessor, wireless network, and display
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AugustSeptemberOctoberNovember Research Hardware Software Testing
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