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Electrical Engineering 595 Capstone Design Project University of Wisconsin-Milwaukee March 8, 2005

Electrical Engineering 595 Capstone Design Project University of Wisconsin-Milwaukee March 8, 2005. Team #2: Staff. Ayodeji Opadeyi Brian Felsmann Eenas Omari Kevin Erickson Rick Ryer. BSEE,BSCS BSEE BSEE BSEE BSEE.

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Electrical Engineering 595 Capstone Design Project University of Wisconsin-Milwaukee March 8, 2005

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  1. Electrical Engineering 595 Capstone Design Project University of Wisconsin-Milwaukee March 8, 2005

  2. Team #2: Staff • Ayodeji Opadeyi • Brian Felsmann • Eenas Omari • Kevin Erickson • Rick Ryer • BSEE,BSCS • BSEE • BSEE • BSEE • BSEE

  3. Ayodeji Opadeyi Expertise: EMC, Programming (C++, Java, Assembly), Powers, Circuit design, RF Experience: 1 year Co-op at Harley Davidson Brian Felsmann Expertise: Communication systems, Fiber Optics, Programming, Digital design. Experience: 1 year internship at Johnson Controls Eenas Omari Expertise: Electronics (Filters), Circuit design, RF , Control systems, Digital Design, Communications. Kevin Erickson Expertise: Motors, AC generators, Analog/Digital Design Experience: 2 years Co-op at Harley Davidson Rick Ryer Expertise: Embedded Systems, Microprocessors, Digital Circuits, Assembly Programming Experience: 4 summer internships at GE medical. Team #2: Expertise & Experience

  4. Wireless Surround Sound

  5. Wireless Surround Sound Definition: • Wireless surround sound using infrared technology • A plug-n-play system compatible with existing receiver and speakers Benefits: • No need for unsightly wires around living room • Fast installation of surround sound Features: • Powerful 70 watt delivered the rear speakers • Maximum operating range of 25 feet • On/Off/Standby modes of operation

  6. Refined Block Diagram Analog Channels from Receiver (Left & Right Rear) Transmitter Transmitter Power Supply (Eenas) ADC (Ayo) IR Transmitter (Kevin) Analog Digital Infrared Receiver × 2 Receiver Power Supply (Rick) Amplifier (Brian) DAC (Ayo) IR Receiver (Kevin) Analog Digital Analog Channel to Speaker

  7. Performance Requirements Power Inputs • AC Power (U.S. and Canada) 95 – 132 V @ 57-63 Hz • Short circuit protection for transmitter and receiver • ESD Protection Electrical Interfaces • Analog input from audio receiver • 70 watt analog output to speakers • Analog input is digitalized and sent via infrared emitter and photodiode and converted back to an analog signal

  8. Performance Requirements ADC & DAC: • 16 bit resolution conversion • 44.1 kHz Sampling frequency (minimum) • Total propagation delay from input to output < 30 μs Amplifier Requirements: • 70 Watts peak power • 90 dB SNR • 0.1% THD

  9. Performance Requirements User Interfaces • On/Off switch on transmitter and receiver • Sight Laser for installation Operation Modes • On/Off, Standby (Automatic sleep/wake based on signal presence) Mechanical Interface • On/Off Switches

  10. Standard Requirements Temperature Ranges • Operating Temperatures: 10°C – 40°C • Storage Temperatures: -10°C –70°C Humidity Ranges • Operating humidity: 2% – 98% • Storage humidity: 2% – 98% Product Life • 5 years • 90 day warranty

  11. Standard Requirements Product Dimensions • Transmitter, 6” W x 2” H x 6” L • Transmitter PCB Area: 195 cm2 • Receiver, 9” W x 3” H x 9” L • Receiver PCB Area: 466 cm2 for each receiver Safety Requirements • Primary Safety Standards • UL 6500, IEC 61603, IEC 61558 • EMC Safety Standards • INC61204, IEC 55103, IEC61000

  12. Safety Standards • UL 6500 • Audio/Video and Musical Instrument Apparatus for Household, Commercial, and Similar General Use • IEC 61603 • Transmission of audio and related signals using infra-red radiation • IEC 61558 • Electrical, Thermal, and Mechanical safety of portable transformers • IEC 61204 • Safety and EM requirements of switching power supplies up to 600 V • IEC 61000 • Specifies compliance with interference from EM sources and limits EM interference that can be emitted

  13. Refined Block Diagram Analog Channels from Receiver (Left & Right Rear) Transmitter Transmitter Power Supply (Eenas) ADC (Ayo) IR Transmitter (Kevin) Analog Digital Infrared Receiver × 2 Receiver Power Supply (Rick) Amplifier (Brian) DAC (Ayo) IR Receiver (Kevin) Analog Digital Analog Channel to Speaker

  14. Transmitter Power Supply • Block Description • Is an electrical device that transforms the standard wall outlet electricity (AC) into the lower voltages (DC). • Will supply voltage to both the Analog to Digital converter (ADC) and the Infrared transmitter (IR Transmitter). Block Owner: Eenas Omari

  15. Block Level Performance Requirements * User Indicators and Displays: - Indicator Parameter : Power on LED. - Indicator Color and Type : Red LED. - Indicator Viewing Environment: bright light, full darkness. * Operation Modes: - Power Mode: ON, OFF. - Functional Mode: Normal. * Electrical Interfaces: Signal Type: Analog. Signal Direction: Input, Output. Input Voltage Range: 103 – 132 volts (AC). Input Frequency Range: 57 – 63 Hz. Output Voltage Range: 5, +12, -12 volts (DC). Output Current max. : 400 mA Block Owner: Eenas Omari

  16. Block Level Standard Requirements * Environmental: • Operating Temperature Range: 10 – 40 oC • Storage Temperature Range: 10 – 40 oC • Operating Humidity Range: 2 – 98 %Rh • Storage Humidity Range: 2 – 98 %Rh. Block Owner: Eenas Omari

  17. Transmitter Power SupplyBlock Signals Power Block Owner: Eenas Omari

  18. Transmitter Power Supply Design Voltage Regulator (DC/DC) 5 Volts 120 volts AC Isolation Rectifier AC/DC Conversion Output Input Voltage Regulator (DC/DC) 15 Volts Over-voltage Protection will be considered in this design Inverter Output -15 Volts Block Owner: Eenas Omari

  19. Block Prototyping Plan Block Owner: Eenas Omari

  20. Task-Resource Estimate Summary * Project definition and system design phases ~ 110 hours. * Verification, integration and productization phase ~ 11 hour * Validation and presentation “final phase” ~ 161.5 hours. Total hours: 282.5. Total cost of $71 (Which includes PCB board). Block Owner: Eenas Omari

  21. Refined Block Diagram Analog Channels from Receiver (Left & Right Rear) Transmitter Transmitter Power Supply (Eenas) ADC (Ayo) IR Transmitter (Kevin) Analog Digital Infrared Receiver × 2 Receiver Power Supply (Rick) Amplifier (Brian) DAC (Ayo) IR Receiver (Kevin) Analog Digital Analog Channel to Speaker

  22. Performance Requirements Power Inputs • DC Power 4.75– 5.25 V Electrical Interfaces • Analog Input, 16 Bit Serial Digital Output Input-Output SNR • 86dB (minimum) Maximum Throughput Rate • 100 kHz Block Owner: Ayodeji Opadeyi

  23. Performance Requirements Total Harmonic Distortion • 0.1% Analog Characteristics • Offset Error Voltage ±2mV • Noise 20µVrms • Capacitance 25pF • Frequency 20-20kHz • Input Impedance 8Ω Block Owner: Ayodeji Opadeyi

  24. Standard Requirements Temperature Ranges • Operating Temperatures -40°C – 85°C • Storage Temperatures -65°C –150°C Humidity Ranges • Operating and Storage humidity 2 – 98% Max Mass • 0.1kg Block Owner: Ayodeji Opadeyi

  25. ADC Block Diagram ADC 5 VDC Input Left Input Serial Output to IR Transmitters Signal Conditioning Signal Conditioning Right Input Signal conditioning is to ensure that the signal from the existing audio receiver is within the allowable ADC input voltages Block Owner: Ayodeji Opadeyi

  26. ADC Block Signals Power Digital Analog Block Owner: Ayodeji Opadeyi

  27. Block Prototyping Plan Template Block Owner: Ayodeji Opadeyi

  28. Task- Resource Estimate Summary • Estimated 157.5 total man-hours to complete entire design • Includes specification definition, design, implementation, testing, and fabrication. • Estimated total cost of $55 • Includes parts and fabrication costs of PCB Block Owner: Ayodeji Opadeyi

  29. Refined Block Diagram Analog Channels from Receiver (Left & Right Rear) Transmitter Transmitter Power Supply (Eenas) ADC (Ayo) IR Transmitter (Kevin) Analog Digital Infrared Receiver × 2 Receiver Power Supply (Rick) Amplifier (Brian) DAC (Ayo) IR Receiver (Kevin) Analog Digital Analog Channel to Speaker

  30. IR Transmitter and Receiver • Block Description • Transmit 2 channels of digital audio to their respective IR receiver/amplifier. • Receives 16 bits of serial data from the ADC block per channel (left and right). • Be able to transmit the signals 25 feet to IR receiver. Block Owner: Kevin Erickson

  31. Performance Requirements Power Inputs • 5 Volts DC power from Transmitter Power Supply block for IR Transmitter • ±15 Volts DC power from Receiver Power Supply block for IR Receiver Electrical Interfaces • Serial Digital Input from ADC block • Digital Infrared output to IR Receiver block • Infrared wavelength λ = 950 nm • Serial Digital Output to DAC block User Interfaces • Sight Laser for easy installation Block Owner: Kevin Erickson

  32. Standard Requirements Temperature Ranges • Operating Temperatures: -40°C – 100°C • Storage Temperatures: -40°C –100°C Humidity Ranges • Operating humidity: 2% – 98% • Storage humidity: 2% – 98% Safety • IEC 61603 • Transmission of audio and related signals using infrared radiation Block Owner: Kevin Erickson

  33. IR TransmitterBlock Signals Power Digital Block Owner: Kevin Erickson

  34. IR Transmitter Design Infrared Emitter Driver 16 bit serial data sent via Infrared Emitter (950 nm) Digital Audio sampled at 44.1 kHz 16 bit serial data ADC 0 1 0 1 0 1 0 The input is a series of 0’s and 1’s from the ADC block. The output is infrared pulses of the 0’s and 1’s sent to a photodiode in the IR Receiver Block Owner: Kevin Erickson

  35. IR ReceiverBlock Signals Power Digital Block Owner: Kevin Erickson

  36. IR Receiver Design 16 bit serial data sent via Infrared Emitter (950 nm) 16 bit serial data to DAC block Photodiode Transimpedance Amplifier Comparator DAC 0 1 0 1 0 1 0 Photodiode receives the infrared signal and converts the light signal to current The transimpedance amplifier is needed to convert the current into an amplified voltage Comparator is used to create the 5 Volt logic (0’s and 1’s) needed by the ADC block Block Owner: Kevin Erickson

  37. IR Transmitter Prototyping Plan • Complete initial conceptual design on paper • Component selection and performance • Simulate design in PSpice • Purchase components and build circuit • Test circuit in lab setting Block Owner: Kevin Erickson

  38. Resource Estimate Summary for IR Transmitter and Receiver • Estimated 450 total man-hours to complete entire design • Includes specification definition, design, implementation, testing, and fabrication • Estimated total cost of $60 • Includes parts and fabrication costs of PCB Block Owner: Kevin Erickson

  39. Refined Block Diagram Analog Channels from Receiver (Left & Right Rear) Transmitter Transmitter Power Supply (Eenas) ADC (Ayo) IR Transmitter (Kevin) Analog Digital Infrared Receiver × 2 Receiver Power Supply (Rick) Amplifier (Brian) DAC (Ayo) IR Receiver (Kevin) Analog Digital Analog Channel to Speaker

  40. Performance Requirements Power Inputs • DC Power ±4.75– ±5.25 V Electrical Interfaces • Analog Output, Digital Input Input-Output SNR • 86dB (minimum) Maximum Throughput Rate • 100 kHz Total Harmonic Distortion • 0.1% Block Owner: Ayodeji Opadeyi

  41. Standard Requirements Temperature Ranges • Operating Temperatures -40°C – 85°C • Storage Temperatures -65°C –150°C Humidity Ranges • Operating and Storage humidity 2 – 98% Block Owner: Ayodeji Opadeyi

  42. DAC Block Diagram DAC Outputs to Power Amplifier 5 VDC Input Serial Input from IR Receiver Parallel input to DAC Single Output Serial to parallel shift register -5 VDC Input Block Owner: Ayodeji Opadeyi

  43. Block SignalsPower Digital Analog Block Owner: Ayodeji Opadeyi

  44. Block Prototyping Plan Template Block Owner: Ayodeji Opadeyi

  45. Task- Resource Estimate Summary • Estimated 165.5 total man-hours to complete entire design • Includes specification definition, design, implementation, testing, and fabrication. • Estimated total cost of $55 • Includes parts and fabrication costs of PCB Block Owner: Ayodeji Opadeyi

  46. Refined Block Diagram Analog Channels from Receiver (Left & Right Rear) Transmitter Transmitter Power Supply (Eenas) ADC (Ayo) IR Transmitter (Kevin) Analog Digital Infrared Receiver × 2 Receiver Power Supply (Rick) Amplifier (Brian) DAC (Ayo) IR Receiver (Kevin) Analog Digital Analog Channel to Speaker

  47. Audio Power AmplifierIntroduction and Block Diagram • Amplifies input audio signal from DAC • Outputs amplified audio signal to drive loudspeakers • Requires +/- 35 V from DC Power Supply Audio Input Signal Audio Output Signal DAC Audio Power Amplifier Loudspeaker +35 V -35 V DC Power Block Owner: Brian Felsmann

  48. Audio Power AmplifierPerformance Requirements Electrical Transfer Characteristics • Voltage Gain: 0 – 21.5 dB • Frequency Response: 20 – 20kHz • Signal to Noise Ratio (SNR): 90 dB (min) • Total Harmonic Distortion (THD): 0.1% (max) • Output Power: 60 - 70 W RMS • Maximum Noise: 100nV / root Hz • CMRR: 85 dB (min) • Output Impedance: 4 - 8 ohms Block Owner: Brian Felsmann

  49. Audio Power AmplifierStandard Requirements & Thermal Characteristics Standard Requirements • Operating Ambient Temperature Range: 0 - 40°C • Storage Temperature Range: 0 - 50°C • Operating Ambient Relative Humidity: 2 - 98% RH Thermal Characteristics • Junction Temperature: 150°C (max) • Thermal Resistance: Junction to Ambient (θJA)30°C/W (max) Junction to Case (θJC)0.8°C/W (max)

  50. Audio Power AmplifierElectrical Interfaces Analog Signals Block Owner: Brian Felsmann

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