Slide 1RELAY CONTROL CIRCUITAUDIO CIRCUITAUDIO-FREQUENCY RESPONSETesting - GeneralSound Intensity TestProgressPROTOTYPE COSTSFuture DevelopmentsLIGHTING CIRCUIT2 separate 35 Watt lighting circuits•Controlled by relay and microcontroller•Variable frequency of 5 – 10 flashes per secondProblem: Magnetic coil relay Control circuit was used to isolate from microcontrollerFeed back remained a problemSolution: Solid state relayNo physical connection between source and outputRELAY CONTROL CIRCUITAUDIO CIRCUITAudio Circuit: TDA2005 Integrated Chip•10 Watts per Channel•Voltage Gain of 3AUDIO-FREQUENCY RESPONSELogarithmic Scale of Audio Response5 Volt Input – 15 Volt OutputDeclines 3 dB/decade at 22 kHzTesting - General Functional Testing of complete systemMotion detector object testingDistance and Frequency of output noiseField Testing Effectiveness of selected noises EMI and Impulse ResponseEnvironmentalSound Intensity TestSpectrum analyzer results:Frequency sweep from 8 kHz to 40 kHzApplicable intensity between 88 dB and 90 dBProgress Functional Test Motion Sensor Audio Lighting MicrocontrollerPackaging and Mounting Field Testing Output parameters and adaptability EnvironmentalFuture Development and Cost Reduction Manufacturability EthicalHealth and SafetyPROTOTYPE COSTSPART Low Qnty Cost Quantity TotalPower Supply 10 1 35.00Transient Voltage Suppressors 6.08 1 4.23Speakers (pair) 6.99 1 6.99TDA2005 Op-Amp 2.84 1 2.84Lighting Components 25 2 20.00Enclosure 25.46 1 25.46PIC18xx2 8.08 1 8.08EEPROM 4.62 2 9.24Motion Sensors 18 2 36.00RS232 4 1 4.00DAC-MAX517 5 1 8.86Circuit Board 3 1 3.00Relay 1 1 8.00Miscellaneous Parts ~ ~ ~=9.00TOTAL 180.00Future Developments •Photo sensor •Primary voltage as a power source•Additional sound generation and predator noise•Data Log•Wireless communication•Battery
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