DESIGN CONSTRAINTS

1
DESIGN CONSTRAINTS

• Motion Sensing
• Audio Response
• Lighting
• Microcontroller
• Environmental
• Cost
• Animal Care

2
AUDIO CIRCUIT

• Frequency output of 8 kHz 30 kHz

Hearing Range Most Sensitive Range
Humans 20 Hz 20 kHz 1 kHz 4 kHz
Target Squirrels 113 Hz 49 kHz 8 kHz
Target Birds 300 Hz 40 kHz 4 kHz 10 kHz
3
AUDIO INTENSITY
Source Intensity Intensity dB
Threshold of Hearing (TOD) 1 10-12 0 dB
Whisper 1 10-10 20 dB
Normal Conversation 1 10-6 60 dB
Animal Deterrent Device 1 10-3.5 90 dB
Large Orchestra 1 10-3 98 dB
Threshold of Pain 1 101 130 dB
Instant Perforation of Eardrum 1 104 160 dB
4
AUDIO DISSIPATION

• Inverse Square Law for intensity

Source Intensity Intensity dB
Whisper 1 10-10 20 dB
Animal Deterrent Device at 30 feet 1 10-7 55 dB
Normal Conversation 1 10-6 60 dB
Animal Deterrent Device at 1 foot 1 10-3.5 90 dB
5
COMPUTER SIMUALTION

• Simulated Gain of 18 per output

6
LIGHTING CIRCUIT
Xenon bulb Lifetime of 1,000,000 strobes per bulb
4 KV XENON BULB
Variable Resistor
120 VAC RELAY
7
GOALS

• Semester Goals
• Prototype
• Complete Testing
• Preliminary Patent
• Final Goals
• Optimize Final Design
• Patentable Device

8
SUMMARY

• The animal Deterrent Device will
• Deter animals more effectively than
• any other device on the market
• Reduce electric utility companies
• operating costs
• Increase stability to electric power systems

9
Acknowledgments

• Dr. Noel Schulz Advisor
• Dr. Bob Reese Microcontroller
• Dr. Raymond Winton Amplifier
• Dr. Erdem Topsakal Electromagnetics
• Dr. John Harkness Animal Care
• Brian Seal and Mike Myers Structural

10
Questions?