15 Spring 2013 Jackson McCormick Andrew Batek Carey Woolet Justin Lindley Presentation Outline Project overview Projectspecific success criteria Block diagram Component selection rationale ID: 690036
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Slide1
ECE 477 Design Review Team
15
Spring 2013
Jackson McCormick, Andrew
Batek
, Carey
Woolet
, Justin LindleySlide2
Presentation Outline
Project overview Project-specific success criteriaBlock diagram
Component selection rationalePackaging designSchematic and theory of operation
PCB layoutSoftware design/development status
Project completion timelineQuestions / discussionSlide3
Project Overview - Abstract
Interweaving the impressive visual power of electricity and the visceral emotion of music, Acoustic Storm takes analog or digital audio input and outputs its own rendition using two varieties of solid state tesla coils. Slide4
Overview – Selected Design DetailsInput OptionsMidiAnalog
Multiple Coil typesClass E HFSSTC (Tweeters)DRSSTC (Mids)Control Options
Temperature and spectrogram outputPotential for volume and tone controlSlide5
Project-Specific Success Criteria
An ability to decode MIDI input and output a PWM signal at the corresponding frequenciesAn ability to receive analog input, digitize it using an ADC, and output a PWM signal corresponding to the analog waveform
An ability to monitor and control system status (i.e. volume control and temperature monitoring) through an LCD and input systemAn ability to generate and control a power output sufficient to drive an electrical arc based acoustic device
An ability to split audio signals at certain crossover frequencies and send them to a specific speaker (i.e. tweeters, mid, bass signals)Slide6
Block DiagramSlide7
Major Component Selection RationaledsPIC
Microcontroller16 Bit PWMDigital Signal LibraryWolfson ADC
24 Bit Delta Sigma, I2SVishay/ Siliconix MOSFET600 V OperationLow switching times
Low Rdson
High Current capabilitySlide8
Selection Rationale (cont.)Coil ParametersHFSSTC Secondary Inductance
DRSSTC Primary InductanceDRSSTC Secondary InductanceDRSSTC Primary tank capacitor
DRSSTC Secondary capacitanceSlide9
Packaging ConsiderationsSafety ConsiderationsPhysical Isolation – PlexiglasElectrical Isolation – Faraday Cage
Contact Close SwitchPower Circuitry located under coilsCoaxial Cable to carry PWM signalsGeneric control box casing with large distance between coils and control.Slide10
Coil PackagingHFSSTC12”x12”x20”
~13.486 lbs.~$90DRSSTC
20”x20”x24”~29.5 lbs.~$151*Plexiglas is already owned by Team #15 – Cost will be significantly less than shown*Slide11
Detailed Coil Packaging Design
Coil Packaging
AWB - 2/5/2013
Front/Side:
Top:
W/O Faraday Cage
W/ Faraday Cage
20”
20”
12”
12”
20”
24”
Plexiglas
Chain-link (or similar)
Scale:
=
1”
DRSSTC Box
HFSSTC BoxSlide12
Schematic/ Theory of OperationOverviewMicrocontroller5V/3.3V Supply
ADCUART translating LCD 12V Supply HFSSTC Control Slide13
Schematic/Theory of OperationSlide14
Schematic - MicroSlide15
Schematic – Power SupplySlide16
Schematic - ADCSlide17
Schematic - UARTSlide18
Schematic - MIDISlide19
Schematic - OutputsSlide20
SchematicSlide21
Schematic – 12V SupplySlide22
Schematic – HFSSTC ControlSlide23
PCB Layout ADC close to audio input
Multiple Voltage Levels Wide Traces
Separate Areas for each function Aesthetics Slide24
PCB LayoutSlide25
PCB Layout - MicroSlide26
PCB Layout - PowerSlide27
PCB Layout - InputsSlide28
PCB Layout - LCDSlide29
PCB Layout - OutputSlide30
PCB LayoutSlide31
Software Design/Development StatusCompleted
UART receive PWM control function SPI
Development State machine for midi to parse data Look up table for frequenciesBasic FFTs for SpectrumFIR filtering for PWM outputs Slide32
Project Completion Timeline
Week:
8
9
10
11
12
13
14
15
16
17
Obtain Workroom
Construction/ Design
- Power Supply
- HFSSTC
- DRSSTC
- Primary Capacitors
- Non- PCB Circuits
Programming
- MIDI
- ADC
- LCD
- Control
- Temp. Monitoring
Testing
Debugging
Design Tweaking/ Finishing
Slide33
Questions / DiscussionSlide34
Questions / DiscussionSlide35
Questions / Discussion