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

Team #2: Expertise & Experience 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.

Wireless Surround Sound

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

Refined Block Diagram Transmitter Receiver × 2 Transmitter 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

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

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

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

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

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

Safety Standards UL 6500 IEC 61603 IEC 61558 IEC 61204 IEC 61000 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

Refined Block Diagram Transmitter Receiver × 2 Transmitter 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

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

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

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

Transmitter Power Supply Block Signals Block Owner: Eenas Omari

Over-voltage Protection will be considered in this design 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

Block Prototyping Plan Name Block Area (cm2) Total PCB Area (cm2) PCB Substrate Type Comp Attachment Socketed Components Types of Connectors Transmitter Power Supply 155 195 Outsourced Direct Solder N/A IEC320 Block Owner: Eenas Omari

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

Refined Block Diagram Transmitter Receiver × 2 Transmitter 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

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

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

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

ADC Block Diagram 5 VDC Input Left Input Serial Output to IR Transmitters ADC 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

ADC Block Signals Power Digital Analog Block Owner: Ayodeji Opadeyi

Block Prototyping Plan Template Name Block Area (cm2) Total PCB Area (cm2) PCB Substrate Type Comp Attachment Socketed Components Types of Connectors ADC 15 40 Outsourced IC Socket/ Adapters N/A Block Owner: Ayodeji Opadeyi

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

Refined Block Diagram Transmitter Receiver × 2 Transmitter 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

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

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

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

IR Transmitter Block Signals Power Digital Block Owner: Kevin Erickson

IR Transmitter Design Infrared Emitter Driver 0 1 0 1 0 1 0 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

IR Receiver Block Signals Power Digital Block Owner: Kevin Erickson

IR Receiver Design Photodiode Transimpedance Amplifier Comparator 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

IR Transmitter Prototyping Plan Block Name Block Area (cm2) Total PCB Area (cm2) PCB Substrate Type Comp Attachment Socketed Components Types of Connectors IR Transmitter 25 40 Outsourced Direct Solder N/A IR Receiver 41 61 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

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

Refined Block Diagram Transmitter Receiver × 2 Transmitter 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

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

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

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

Block Signals Power Digital Analog Block Owner: Ayodeji Opadeyi

Block Prototyping Plan Template Name Block Area (cm2) Total PCB Area (cm2) PCB Substrate Type Comp Attachment Types of Connectors DAC 20 61 Outsourced IC Socket/ Adapters N/A Block Owner: Ayodeji Opadeyi

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

Refined Block Diagram Transmitter Receiver × 2 Transmitter 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

Audio Power Amplifier Introduction 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

Audio Power Amplifier Performance 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

Audio Power Amplifier Standard Requirements & Thermal Characteristics 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)

Audio Power Amplifier Electrical Interfaces Analog Signals Block Owner: Brian Felsmann

Audio Power Amplifier Electrical Interfaces Power Signals Block Owner: Brian Felsmann

Audio Power Amplifier Block Level Implementation Input Stage Voltage Gain Amplifier Output Stage + 35 V -35 V DC Power From Digital/Analog Converter (DAC) Analog Audio Signal To Loudspeaker Analog Audio Signal Block Owner: Brian Felsmann

Audio Power Amplifier Prototyping Plan Block Area: 200 cm2 Total PCB Area: 255 cm2 PCB Substrate Type: outsourced Comp Attachment Type: solder Types of Connectors speaker terminals Block Owner: Brian Felsmann

Audio Power Amplifier Task Resource Estimation Summary Block Definition & System Design Phase: Man-hours Estimate: 12.0 Mhrs Detailed Block Design Tasks: Man-hours Estimate: 206.5 Mhrs (max) Total Man-hours Estimate: 218.5 Mhrs (max) Materials Estimate: $40.00 (max) Block Owner: Brian Felsmann

Refined Block Diagram Transmitter Receiver × 2 Transmitter 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

Performance Requirements Power Inputs AC Power (U.S. and Canada) 95 – 132 V @ 57-63 Hz Power Outputs DC Power – Total current output: 5 A +/- 35 V @ 2.1 A at each level +/- 15 V @ 0.25 A for each level +/- 5 V @ 0.3 A Block Owner: Rick Ryer

Standard Requirements Temperature Ranges Operating Temperatures 10°C – 40°C Storage Temperatures -10°C –70°C Humidity Ranges Operating and Storage percent humidity 2% – 98% Block Owner: Rick Ryer

Receiver Switching Power Supply Signal Isolation and Conditioning (Rectifier to DC) Voltage Transformer with Regulator +/- 35 V AC input Voltage Transformer with Regulator +/- 15 V Voltage Transformer with Regulator +/- 5 V Switching Control Feedback & Isolation Block Owner: Rick Ryer

Prototyping Plan Complete Initial Conceptual design (Paper) Simulate Design in Pspice Verify component selection and performance Purchase components and build circuit Test circuit in lab setting Adjust as necessary for “Real World” components Implement Completed design on PCB Retest final PCB for proper operation. Block Owner: Rick Ryer

Resource Estimate Summary Estimated 317 total man-hours to complete entire design Includes specification definition, design, implementation, testing, and fabrication. Estimated total cost of $65 Includes parts and fabrication costs of PCB Block Owner: Rick Ryer

Completed Project Package Description For Transmitter Package 2 PCB boards First contains ADC, and IR transmitter Second contains Transmitter Power Supply For Receiver Package ( x 2) 3 PCB boards First contains DAC, and IR receiver Second contains Amplifier Third contains receiver power supply

Project Package Description Total PCB = 8 for all three packages Area of PCB for Packages For transmitter, 195 cm2 For receiver, 466 cm2 Case dimensions Transmitter – 6” x 2” x 6” Receiver – 9” x 3” x 9”

Resource Comparison Estimated Project Cost - $400 Estimated Project Time – 1750 man-hours Project Cost Allocation - $500 Project Time Allocation – 1600 man-hours

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