Transcript L1C-Spring08

318-595 Project Lab 1C
Project Proposal
• Objectives
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Present Capstone Project Proposal
Modifications & Approvals
Refinement of Standard & Performance Requirements
Detailed Block-Block Interface Definitions
Present P1 in Lab - Next Week
10 Minutes/Team
318-595 Project Lab 1C
Project Proposal Presentation – P1
• Deliverable 1 - Team
– Powerpoint slide set used for “P1” which captures
Labs
1A-B
1. Team Number, Names & Brief Description of Expertise
2. Available Project Resource Summary
3. Initial Project Proposals including simple block diagrams
4. Selection Process including systematic scoring system
5. Recommended Project Description
6. Perf Requirements Summary
7. Std Requirements Summary
8. Basic Business Case
9. Refined Block Diagram
10. Block Diagram Description Table
11. Block Signal Tables
12. Key Patents and Mitigation Strategy
13. Key Ethical/Societal Issues and Mitigation Strategy
Block Tab
Order in
Reqs File
Block
#
318-595 Project Lab 1C
Block Diagram Description
Block Name
Owner
Brief Description
Of Block Function
Power
Interface
s
Digital
Interfaces
Analog
Interface
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1
Power Supply
J. Doe
Converts Commercial AC Power
to 5VDC and +/-12VDC with 1
hour battery backup if AC fails
In: AC
Out: 5VDC,
+/-12VDC
None
Out: Vbat
2
CPU & Clock
A. Student
Senses User I/F Switches for
command inputs and updates
display periodically, digitizes Vbat
In: 5VDC
Out: Data Bus,
Addr Decode
In: Port A
In: Vbat
3
User Interface
Z.
Engineer
Provides user inputs for
continuous speed, dir and binary
control of lights. Provides user
output display for speed, temp &
battery life.
In: 5VDC,
+12VDC
In: Data Bus
Out: Port A
None
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5
6
7
318-595 Project Lab 1C
Block Interface Signals
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Deliverable 2 – Individual Assignment for Block Owners
1. For Each Design Block: Define and document all of your Block-Block
Interface Signals in the spreadsheet template included within the 3 main
areas:
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Power Signals including Power Consumed, Power Supplied
Digital Interface Signals (including busses)
Analog Interface Signals
2. Review ALL “Inter-block” signals and document Approval and “OK” in
your spreadsheets to record signal agreements.
3. See attached Block Interface Signal Table Excel Tool
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Summary Tab is Locked
Data Flows from Power, Digital and Analog Tabs
Some Cells have pull-down selections, Others are Free Form Values
BLOCK OUTPUTS NEED TO AGREE WITH BLOCK INPUTS !!!
4. Deliverables for each block include:
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Block Interface Excel File – Electronic
Powerpoint Summary Slide – Electronic and Paper
318-595 Project Lab 1C
Block Signals: Summary Table
• This tab is locked and all information flows from
individual Power, Digital and Analog Tabs
318-595 Project Lab 1C
Block Signal Table: Power
Power Signal Blocks & Design Guidelines
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Block Numbers Used for To-From Column
Assume ALL Blocks will consume power
Consumers block owners provide; nominal voltage, max current, & max oper voltage
range
Blocks that supply power may also consume it and must allow for their inefficiencies
Signal names should include nominal voltage (eg; 5V, 5VCC, +/-12V, etc)
For all analog signals you will need DC supplies that span wider than analog voltage
range
Power Supply Current Capacity Should be Designed to Provide Demand + 50% Min
Margin
Try to keep DC voltage supplies at standard values including 3.3, 5, 9, 12, 15 & 24
VDC
Must specify both nominal and range of voltages
Must specify maximum total current for each voltage
Frequency range for AC voltages
318-595 Project Lab 1C
Block Signal Table: Digital
Digital Signal Blocks & Design Guidelines
• Block Numbers used for To-From Column
• A digital signal is one that conveys two levels of information (ie; 1/0, On/Off,
etc)
• Must specify direction from viewpoint of YOUR block: Input, Output or
Bidirection
• Must specify Block-Block Interconnect Means for each signal
• For Inputs classify as Standard or Schmitt Trigger
• Inputs must specify Vih(min), ViL(max), (or Vth), Iih(max) and IiL(max) limits
• For Outputs classify as Totem Pole, Open Collector, or Tristate
• Outputs must specify Voh(min), VoL(max), Ioh(max) and IoL(max) limits
• If unsure, start by assuming Std TTL levels, Std Input, Totem Pole Output
Std TTL: Vih => 2.0V, ViL <= 0.8V, Iih <= 40uA, IiL <= -1.6mA;
16mA
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Voh => 2.4V, VoL <= 0.4V, Ioh <= -400uA, IoL <=
For noisy or slow transition digital signals, use a Schmitt trigger input
318-595 Project Lab 1C
Block Signal Table: Analog
Analog Signal Blocks & Design Guidelines
• Block Numbers used for To-From Column
• Analog signals may be Input, Output or BiDirectional
• Signals that are not Power nor Digital are by default Analog signals
• Must specify Block-Block Interconnect Means for each signal
• Classify the coupling of the signal as Direct, Capacitive, Xfmr or Other
• Classify the maximum voltage (amplitude), use peak values not RMS
• For input signals, classify the min-max input impedance
• For output signals, classify the min-max output impedance
• Bidirectional signals require both input and output impedance classifications
• Classify the min-max frequency range for each signal
• List the maximum leakage current allowed for the signal if applicable
318-595 Project Lab 1C
Ethics & Intellectual Property
• Deliverable 3 - Team
A. Identify at least 3 “active” patents that would be worthwhile
understanding for your recommended project
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Patent Number
Patent Name or Title (Page 1)
Patent Date
Mitigation Strategy: Design Around or Likely Royalty
B. From Lab 1B, Document the 2 most serious Ethical/Societal Issues that
could arise in your project and how you could mitigate
Some key questions to consider
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Are there hazards the product presents to the user?
Could the product fail in some way to cause harm to the user?
How can you prevent a product failure from causing injury or harm?
What if the engineering is faulty, flawed or incorrect? Any Consequences?
What are the key areas of the engineering that need to be 100% correct?
How can you insure there is faulty or flawed engineering in those areas?
318-595 Project Lab 1C
How do I find Patents? Internet Sites
- Sites offer limited key word searching
www.uspto.gov
www.us-patent-search.com
www.msoe.edu/library/patent_searching/index.htm
Try to find at least 3 patents that may be applicable to your recommended
project/product
• List the patent(s) number, title and date on 1 slide
• Include a comment regarding your ability to design around or likely royalty