Tsz Hang Yung Andrew Strobel Mahdi Massey Brian Rosenberger 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 owner(s) Violence may lead to serious injuries and infection (as well as costly veterinarian bills)

Goals Two short range devices which would prevent such a fight Devices should fit on cat collar but not restrict movement Trigger at specified range Deter cats from each other in safest manner possible

Customer Needs Compact devices that fit on a collar (Weather/Cat Resistant) 5’ – 25’ Range Both collars detect each other and go off concurrently On/Off Switch Operation indicator Low battery detector Effective but safe stimulus Increasing stimulus (Linear or Exponential) Alert Owner*

Specification (metric) Engineering Specs Revision # 3 Spec. # Importance Specification (metric) Unit of Measure Ideal Value S1 2 Transceiver on the collar   N/A S2 Receiver on the collar S3 1 Range of device / maximum distance Feet 0' - 30' S4 Range of deterant S5 Safe Stimulus dB 1kHz - 40 kHz S6 Switch added between power and the circuit V 0 - 15 V S7 Enclosure size Inches 0.8"x1"x0.5" S8 LED Indicating the device is powered Feature S9 LED Indicating the battery is low 2.7 S10 Battery Life Cycle Hours > 4 S11 Circuit Enclosure S12 Detection Time ms S13 Burst of Signal s S14 3 Both collars go off within a certain amount of time 6

Top Cat: Phase I Previous Team Used RF as detection agent Feasible, but not the best technology when determining distance Boards could not meet size specifications

Phase II IR as a detector instead of RF Low power usage Portability maintained Simple Smaller in size Analog exclusive instead of digital

System Breakdown

System Operation IR receiver and emitter on both collars LED transmits 33 kHz modulated signal Receiver scans for 33 kHz signal Once signal is acquired, receiver triggers deterrent Deterrent separates cats away from one another

Circuit Schematic

Proof of Concept

Detection Range Test Results In the Sun In the Shade

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 Work Increase the range for the alert owner RF transmitter Decrease size of enclosure Increase the number of collars More specialized battery with recharging circuit built in

Questions?