Project Definition and Selection Process

1
Project Definition and Selection Process

• Objectives Strategy
• Explore the feasibility of the 3 Possible
  Projects from Lab 1A
• You may entertain 1 more potential project idea
  from your team
• Identify and document a potential block diagram
  for each potential project
• Down Select to a Single Recommendation by
  evaluating the Attributes of Good 595 Projects
  using the weighted matrix tool
• Discuss Your Project Selection Process
• For the Selected Project
• Document Initial Version of Product Level
  Standard Requirements
• Document Initial Version of Product Level
  Performance Requirements
• Document any potential ethics issues

2
Project Definition and Selection Process

• Deliverables (Paper and Electronic)
• Powerpoint slide set used for P1 which captures
  
• 3 Project Proposals including initial block
  diagrams
• Selection Process including systematic scoring
  system (See Following Pages)
• Recommended Project (See Following Pages)
• Refined Block Diagram (See Following Pages)
• Perf Requirements (See Following Pages)
• Std Requirements (See Following Pages)
• Basic Business Case

3
Block Diagram Slide1 For Each Non Recommended
Project

• 1 Slide showing basic Block Diagram
• Show major external electrical user interfaces
• Show external power inputs outputs
• Show major block-block electrical interfaces
• Describe Product with a few key bullets below
  diagram

Mandatory
4

• Description and Key Benefits
• Solar Panel would move around and by current
  intensity analysis, would detect the most
  efficient position that yields the most power
  produced.
• Based on recorded time of first ambient light
  and time of max. power absorption during initial
  stationary period, initial direction of panel is
  calculated, and movement schedule is determined
  from this.
• Solar power is renewable energy source,
  maximizing its potential is necessary in times of
  high energy demand
• Does not require as much manual alignment and
  configuration, compared to another solar panels
• Power Source, User Interface
• Power would come from the sun, solar panels
  would convert solar energy into electrical
  energy, which would then be used by the motors,
  power meters and processing unit
• Micro controller would be preprogrammed to
  perform auto alignment tasks, would inform user
  through website interface e.g. direction, angle
  of elevation etc
• Team Talent
• Our team has good programming skills, knowledge
  in electronic circuit design and signal
  processing.

Solar Panel
A/D Conversion
Power Meter
Micro-Controller
Servo-motor
5
Selection Matrix Average team scores 0-100
For each project proposal, fill in your team
average scores (0-100)
6
Selection Matrix Average team scores 0-100
7
Proposed Product Summary

• 1 Slide to further describe the Proposed Selected
  Product
• High Level Definition
• User Requirements
• Bullet form plus optional pictures (competitive
  pictures)
• What exactly is the product?
• What is the primary benefit to the user?
• What is the intended application of the product?
• What claims can be made with regard to the
  product?
• Are there similar or identical products of this
  type on the market?
• What major industry family does the product
  belong to? (ie aerospace, automotive, consumer,
  telecom, etc,)

8
Description The project is intended for thermal
management of next generation CT system. As we
all know thermal management is a very important
part of any design both from optimal
functionality and reliability point of view. This
document will describe the functionality of the
controller. The detector thermal controller is
designed to maintain rails at a uniform
temperature, which is critical for controlling
the photodiode and preventing any changes to the
rail temperature profile. Changes in the rail
temperature or the temperature profile can lead
to IQ errors due to poor diode temperature
control.
9
Mechanical Size 2001252.36mm Mounting Holes 8
mounting holes Shielding All mounting holes
connected to Chassis Ground, nothing else on
board will be connected to Chassis Ground.
10
Project Selection

• Slide(s) to Describe your Overall Selection
  Process
• Overall, why was this project selected?
• What are the major risks in the project?
• Why were other projects rejected
• Was this unanimously supported on your team? If
  not, what were the objection raised.

11
Project Selection

• Overall Selection Process
• This project is supported best by the abilities
  of all team members
• Risks include low margins, competitive market
• Other projects fell outside the scope of this
  class as well as requirements for special parts
  requiring long lead time
• Unanimously supported by all team members

12
System Level Requirements Slides

• Min 2 Slides, Max of 6
• List and Quantify the most important Perf
  Requirements
• Performance Reqs Differentiate, Features/Modes,
  Unique to project
• List and Quantify the most important Std
  Requirements
• Standard Reqs Common, Mandatory for all
  projects
• All Standard Requirements must be Quantified

13
Consider Simultaneous Min or Max CasesSome will
NOT be testable
Standard Reqs Env Safety
Requirement Units to Specify

• Min Oper Temp Range
• Min Oper Humidity Range
• Min Oper Alt or Press Range
• Min Storage Temp Range
• Min Storage Humidity Range
• Min Storage Alt or Press Range
• Max Storage Duration
• Primary EMC Standards
• Primary Safety Standards

• Co Range
• Rh Range
• Meters or ATM, Range
• Co Range
• Rh Range
• Meters or ATM, Range
• Time in Days or Years
• List of IEC or FCC stds
• List UL, IEC or other stds

14
Must consider power source(s) early Undefined DC
power sources NOT allowed
Standard Reqs Power Input(s)
Requirement Units to Specify

• AC, Battery, Photovoltaic, Generator, Fuel Cell,
  Thermopile etc
• Permanent or Temporary
• Voltage Range, For each Source
• Max Total Watts, For each Source
• Watt-Hours/Yr for AC Power, mAHrs for
  Batteries (Calendar Life Time)

• Energy Source List
• Source Connection List
• Min Oper Voltage Range
• Max Power Consumption
• Max Energy Consumption

15
Package and Mechanical Design Impact Many Product
Aspects
Standard Reqs Mechanical
Requirement Units to Specify

• Max Volume
• Max Ship Container Size
• Max Mass
• Elec I/F Connector(s)
• Max of PC Bds
• Max PCB Circuit Area
• Max Shock

• Cm3 Total for Entire Product
• Cm Max LxWxH for 1 unit
• Kilograms
• Type Style (subD, BNC, etc)
• Total
• Cm2 Total
• G force (Grms), Reps (depends on environment)

16
Product designs should consider full life cycle
from Mfg process to Disposal
Standard Reqs Mfg Life Cycle
Requirement Units to Specify

• Max Parts Count
• Max Unique Parts Count
• Parts/Mat Allocation
• Asm/Test Allocation
• Product Life, Reliability
• Full Warranty Period
• Product Disposition
• Production Life Support
• Service Strategy

• Total Parts incl elec mech
• of Unique Parts
• (PartsMfgProduct Cost)
• (PartsMfgProduct Cost)
• Time MTBF(yrs)
• Time (yrs)
• Return, Recycle, Dispose, etc
• Time (yrs)
• Dispose or Repair, Factory or Field

17
Performance Reqs Functions Capabilities
Example Requirement Definition

• Accuracy, Resolution, Frequency of Update, Range
• Inputs Output Capability
• Ex. RF Distance, Sensitivity
• Ex. Serial Link Speed
• Speed, Accel, Torque, Directions, Cycles, etc.
• Examples
• Laser Sight Alignment
• SSB BFO Operation
• 650Mbyte Capacity

• Gauge, Measurement of Some Physical Quantity
• Basic Elec Capabilities
• Basic Mech Capabilities
• Basic Functions/Capabilities

18
Others May Apply
Requirement Definition

• ON/OFF, ON/AC, ON/Battery, etc
• Standby, Idle, etc
• Program, Configure, etc
• Diagnostic, Test, etc

• Power Modes
• Power Saving Modes
• Calibration Modes
• Service Modes

19
All Applicable Must Be Defined
Performance Reqs Power Input(s) (Must be
Considered if Applicable)
Requirement Definition

• Hz, Range
• EFT, Surge, Dropout, etc
• Pb-Acid, Li, NMh, Alk, etc
• CR2032, C, D, AA, etc
• Min mA-Hrs

• AC Power Freq Range(s)
• AC Power EMC Stds
• Battery Chemistry
• Battery Std Size
• Battery Capacity

20
Block Diagram Slide(s)

• 1 to 2 Slides showing Block Diagram Table
• Show ALL external electrical user interfaces
• Show ALL external power inputs outputs
• Show overall mechanical envelope (package)
• Show proposed design block ownership (See table)
• Show ALL block-block electrical interfaces (See
  table)
• (You may choose to use the interface spreadsheet)

Mandatory
21
Min Block Diagram Description
Block Block Name Owner Brief Description Of Block Function Power Interfaces Digital Interfaces Analog Interfaces
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
4
5
6
7
22
Min Block Diagram Description
Block Block Name Owner Brief Description Of Block Function Power Interface Digital Interfaces Analog Interface
1 Power management and Processor Mayank Use 48V DC source and provide multiple volatges to different sections of design, also work on processor to Ethernet interface. 48V, 20A Power Supply Microcontroller, Ethernet None
2 Thermistor and pressure circuits Naser Monitoring the temperatures and velocity sensors and interface to the processor. 5V from Block 1 Microcontroller None
3 Heater and SSR circuits Matt SSR control will be providing control signal to 1KW heater controlled by SSR, assist in Ethernet interface. 48V, 12V Power from Block 1 Microcontroller None
4 Fan and Pump control Mohammad Control the speed of the pump and fan. Provide power to 150 W pump and design there interface to processor 48V, 12V, 5V Power from Block 1 Microcontroller None
23
Ethics Considerations

• For the recommended project, discuss the ethics
  issues below and create a slide indicating
  applicability and mitigation methods (ways to
  prevention) for each

• Quality and Safety
• Adequate Verification and Validation
• Ensuring legal compliance
• Conflict of interest
• Bribery and kickbacks
• Treatment of confidential or proprietary
  information
• Consideration of the employers assets
• Relationships clients, consultants,
  competitors, and contractors
• Gifts, meals, services, and entertainment
• Environmental Damage
• Outside employment/business activities

24
Ethics Considerations

• Quality and Safety
• We will use UL listed components
• Adequate Verification and Validation
• We will have our data independently verified by
  another team member
• Ensuring legal compliance
• We will research prior patents and compliance
  with current safety standards
• Conflict of interest
• Not applicable
• Bribery and kickbacks
• We are not worth bribing
• Treatment of confidential or proprietary
  information
• Not applicable
• Environmental Damage
• We will use ROHS compliant devices
• Outside employment/business activities
• We will complete all work internally