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Millennium Infrared Sound System

Millennium Infrared Sound System. Capstone Design Team #2. Eenas Omari Ayodeji Opadeyi Kevin Erickson Brian Felsmann Rick Ryer. Team Members. BSEE BSEE, BSCS BSEE BSEE BSEE. Millennium Infrared Sound System. Project Description: A wireless audio system using infrared technology

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Millennium Infrared Sound System

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  1. Millennium Infrared Sound System

  2. Capstone DesignTeam #2 • Eenas Omari • Ayodeji Opadeyi • Kevin Erickson • Brian Felsmann • Rick Ryer Team Members • BSEE • BSEE, BSCS • BSEE • BSEE • BSEE

  3. Millennium InfraredSound System • Project Description: • A wireless audio system using infrared technology • Primarily designed for Home Theater Systems to eliminate speaker wires • Accepts any analog audio input and transmits the signal to the wireless amplifiers. Uses owner’s already existing speakers. • Not proprietary to any audio manufactures equipment

  4. Millennium InfraredSound System • Benefits of Product: • A plug-n-play system compatible with existing audio receiver and speakers • Eliminates speaker wires around the living room • Does not use RF technology which could have inference from other popular home electronic devices (telephones, Wi-Fi, Radio) • Fast easy installation

  5. Millennium InfraredSound System • Targeted Market of Product: • Consumer Electronics market • Marketed in the United States and Canada • Targeted Demographic • 18 – 30 year olds with Home Theater Systems • MSRP • $100 -- $125

  6. Millennium InfraredSound System • Project Selection: • Reasonable low cost project • Unique product • Similar, more expensive, products using RF technology • An interest from team members

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

  8. Capstone DesignTeam #2 • Available Resources: • 1200 –1600 Man-hours • 15-20 hours/week per team member • Includes lab time, periodic meetings, and personal time • $500-$750 for material and prototyping • $100-$125 per team member • Actual Resources: • 1000 Man-hours • $250 for materials and prototyping

  9. MIRSSPerformance Requirements Power Inputs • AC Power (U.S. and Canada) 102 – 132 V @ 57-63 Hz • Short circuit protection for transmitter and receiver • ESD Protection Electrical Interfaces • Analog input from audio receiver • 60 watt analog output to speakers • Analog input is digitalized and sent via infrared emitter and photodiode and converted back to an analog signal

  10. MIRSSPerformance Requirements ADC & DAC: • 16 bit resolution conversion • 44.1 kHz Sampling frequency (minimum) • Total propagation delay from input to output < 30 μs Amplifier Requirements: • 60 Watts peak power • 97 dB SNR • 0.0015% THD+N (Total Harmonic Distortion + Noise) • 100 dB CMRR

  11. MIRSSStandard Requirements Temperature Ranges • Operating Temperatures: 10°C – 40°C • Storage Temperatures: -10°C –70°C Humidity Ranges • Operating humidity: 20% – 85% • Storage humidity: 10% – 95% Product Life • 5 years • 30 day warranty

  12. MIRSSStandard Requirements Product Dimensions • Transmitter, 6” W x 2” H x 6” L • 2 PCB Boards for Transmitter • Total Area: 195 cm2 • Receiver, 9” W x 3” H x 9” L • 2 PCB Boards for Receiver • Total Area: 466 cm2 (per receiver) Safety Requirements • Primary Safety Standards • UL 6500, IEC 61603, IEC 61558 • EMC Safety Standards • INC61204, IEC 55103, IEC61000

  13. MIRSSSafety Requirements Overview • Primary 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 • EMC Safety Standards • 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

  14. MIRSSTransmitter Block Diagram Analog Channels from Receiver (Left & Right Rear) Transmitter Power Supply ADC IR Transmitter Analog Digital Transmitter Infrared

  15. MIRSSReceiver Block Diagram Infrared Receiver × 2 Receiver Power Supply Amplifier DAC IR Receiver Analog Digital Analog Channel to Speaker

  16. MIRSSComplete Product 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

  17. MIRSSBlock Allocations

  18. MIRSSTransmitter 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

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

  20. Transmitter Power SupplyStandard Requirements Temperature: - Operating Temperature: 10 – 60 oC. - Storage Temperature: 10 – 40 oC. Humidity: - Operating Humidity: 20– 85 %Rh. - Storage Humidity: 10 – 95 %Rh

  21. Transmitter Power SupplyStandard Requirements • Mechanical: - Max PCB Area:103.23 cm2 - Max Volume:524.41 cm3. - Max Mass: 0.907 kg - # PCB: 1. - # Connectors : 1 • Power: Voltage Range (AC): 102 V < Vin < 132 V • Life Cycle: - Life : 5 years - Reliability : 5 years. - Disposal : Recycle.

  22. Transmitter Power SupplyPerformance Requirements • User indicator: - Input Indicator: Bright light, Full Darkness. - Indicator: Power on Red LED. • Operational Modes: - On/Off • Electrical Interfaces: - Input Voltage Range (AC) : 102 V < Vin < 132 V - Output Voltage Ranges: ± 4.75 V < Vout < ± 5.25 V ± 14.25 <Vout < ± 15.75 V - Frequency Range: 57 < f < 63 Hz

  23. MIRSS-2K5Block Diagram Power Distribution Analog Channels from Receiver (Left & Right Rear) +5 volts Transmitter Transmitter Power Supply (Eenas) ADC (Ayo) IR Transmitter (Kevin) Analog Digital +/-5,15 volts Infrared Receiver × 2 Receiver Power Supply (Rick) Amplifier (Brian) DAC (Ayo) IR Receiver (Kevin) Analog Digital Analog Channel to Speaker

  24. Transmitter Power SupplyBlock Diagram Outputs Voltage Regulator (DC/DC) Input +5 Volts AC/DC Conversion Voltage Regulator (DC/DC) 120 volts AC +15 Volts Voltage Regulator (DC/DC) Isolation Rectifier +5 Volts Voltage Regulator (DC/DC) -5 Volts AC/DC Conversion Positive voltage regulator. Voltage Regulator (DC/DC) Negative voltage regulator -15 Volts

  25. Circuit Design

  26. Transmitter Power SupplyTransformer Selection

  27. Transmitter Power Supply Transformer Analysis ** DC Voltage (After Filtering) ** Filter Capacitor Calculation:

  28. Transmitter Power Supply Voltage Regulators • Finding the resistance values for the voltage regulators use the following equations: For the negative voltage. The adjustable current could be neglected because it’s small (micro Amps).

  29. Transmitter Power SupplyPositive Voltage Regulators Resistance ratios: +5 volts DC: R2/R1 = 3 R1 = 180 Ω R2 = 560 Ω Power Dissipation: 200 +15 volts DC: R4/R3 = 11 R3 = 220Ω R4 = 2.4kΩ

  30. Transmitter Power SupplyNegative Voltage Regulators **R6, , R8 is selected to be 120Ω: -5 volts DC: R5 = 3 X 120Ω = 360Ω -15 volts DC: R7= 11 X 120Ω = 1.3 kΩ

  31. Summary of Worst Case Analysis:

  32. Transmitter Power SupplyComponent Selection

  33. Detailed design

  34. Transmitter Power SupplyTransformer Simulation

  35. Transmitter Power SupplySimulation +24 volts -24 volts

  36. Transmitter Power Supply5V Regulator Simulation Output Voltage Input Voltage

  37. Transmitter Power Supply15V Regulator Simulation Output Voltage Input Voltage

  38. Transmitter Power SupplyVerification Primary AC Input Voltage Secondary AC Input Voltage

  39. Transmitter Power SupplyVerification DC Voltage After Bridge Diodes. 0.143 V Ripple 78.0 Volts

  40. Transmitter Power SupplyVerification Positive DC Voltage After Rectification -39.0 Volts 0.109 V Ripple 0.143 V Ripple Negative DC Voltage After Rectification 39.0 Volts 0.099 V Ripple

  41. Transmitter Power SupplyVerification 5V Regulator Output Voltage .293 V ripple -5 V Regulator Output Voltage 0.109 V ripple

  42. Transmitter Power SupplyVerification 15V Regulator Output Voltage 0.126V ripple -15 V Regulator Output Voltage 0.113 V ripple

  43. Transmitter Power SupplyReliability • Block MTBF: 51.1 Years • Block FIT: 2233 per billion hours • Dominant Parts for the unreliability are: - Electrolytic Capacitors - LED.

  44. Transmitter Power SupplyObsolescence Analysis Present Year (P) = 2005.5

  45. Obsolescence analysis continued… Present Year (P) = 2005.5

  46. Transmitter Power SupplySustainability • Top three worst case parts are: - Carbon Resistors - Diodes and LEDs. - Voltage Regulators • Carbon resistors are the worst (negative sustainability). • Possible actions would be using any other type of resistors; such as metal film, voltage regulators that uses CMOS technology would have a better life parameters.

  47. ADCPerformance Requirements Power Inputs • DC Power ±4.75V – ±5.25 V • DC Power ±14.25V – ±15.75 V Electrical Interfaces • Analog Input • Digital Output Input-Output SNR • 90dB Maximum Throughput Rate • 100 kHz Total Harmonic Distortion • 0.1%

  48. Transmitter Layout Allocated Power Supply Area is 4” × 4” × 2”

  49. MIRSS-2K5Block 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

  50. ADCStandard Requirements Temperature Ranges • Operating Temperatures -40°C – 85°C • Storage Temperatures -65°C –150°C Max Volume • 103.24 cm3 Max Mass • 0.1kg

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