TOP CAT PHASE II P12352 Tsz Hang Yung Andrew Strobel Mahdi Massey Brian Rosenberger Problem House cats maintain territories of considerable size ranging from 6 70 acres Cats may enter different territories and engender territorial conflicts unbeknownst to owners ID: 773085
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TOP CAT : PHASE IIP12352 Tsz Hang YungAndrew StrobelMahdi MasseyBrian Rosenberger
ProblemHouse cats maintain territories of considerable size, ranging from 6 – 70 acres Cats may enter different territories and engender territorial conflicts unbeknownst to owner(s)Violence may lead to serious injuries and infection (as well as costly veterinarian bills)
GoalsTwo short range devices which would prevent such a fight Devices should fit on cat collar but not restrict movementTrigger at specified rangeDeter cats from each other in safest manner possible
Customer NeedsCompact devices that fit on a collar (Weather/Cat Resistant) 5’ – 25’ RangeBoth collars detect each other and go off concurrentlyOn/Off SwitchOperation indicatorLow battery detectorEffective but safe stimulusIncreasing stimulus (Linear or Exponential)Alert Owner*
Engineering Specs Revision # 3 Spec. # Importance Specification (metric) Unit of Measure Ideal Value S1 2 Transceiver on the collar N/A S2 2 Receiver on the collar N/A S3 1 Range of device / maximum distance Feet 0' - 30' S4 1 Range of deterant Feet 0' - 30' S5 1 Safe Stimulus dB 1kHz - 40 kHz S6 2 Switch added between power and the circuit V 0 - 15 V S7 1 Enclosure size Inches 0.8"x1"x0.5" S8 2 LED Indicating the device is powered N/A Feature S9 2 LED Indicating the battery is low V 2.7 S10 2 Battery Life Cycle Hours > 4 S11 1 Circuit Enclosure N/A S12 2 Detection Time ms 1 S13 2 Burst of Signal s 1 S14 3 Both collars go off within a certain amount of time s 6
Top Cat: Phase IPrevious Team Used RF as detection agent Feasible, but not the best technology when determining distance Boards could not meet size specifications
Phase IIIR as a detector instead of RF Low power usagePortability maintainedSimpleSmaller in sizeAnalog exclusive instead of digital
System Breakdown
System OperationIR receiver and emitter on both collars LED transmits 33 kHz modulated signalReceiver scans for 33 kHz signalOnce signal is acquired, receiver triggers deterrentDeterrent separates cats away from one another
Circuit Schematic
Proof of Concept
Detection Range Test Results In the Shade In the Sun
Alert Owner - RF Transmitter Schematic Hardware
Alert Owner – RF Test Results Resulting Waveform
Proof of Concept Final product with transducer outside the enclosure for demo purpose Final Product with populated PCB outside enclosure
Future WorkIncrease the range for the alert owner RF transmitter Decrease size of enclosureIncrease the number of collarsMore specialized battery with recharging circuit built in
Questions?