P19510: Eastman Museum Digitization Process
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Systems Design

Table of Contents

Team Vision for System-Level Design Phase

Goals of the Phase:

Functional Decomposition

Purpose

Define the total list of functions and subfunctions, based on the Customer and Engineering Requirements, that must be delivered by the final design.

Functional Decomposition

Functional Decomposition

Benchmarking

Purpose

Explore other alternative options that are currently on the market

Benchmarking of Similar Processes

Benchmarking of Similar Processes

Feasibility: Prototyping, Analysis, Simulation

Question 1: What is the average time of the proposed system, and what is the bottleneck?

Assumptions:

  1. Load/Unload Times are the same
  2. Time at each step
  3. The system is constantly moving
Simulation of Proposed System

Simulation of Proposed System

Question 2: What is the motor's speed and torque required to move the camera up and down the camera?

Assumptions:

  1. Camera Assembly: 5 lbs
  2. Pulley Diameter: 5 cm
  3. Vertical Height Change Speed Desired: 1 in per second
  4. Motor Runs continuously from start to end
Question 2 Calculation

Question 2 Calculation

Question 3: How much torque is required to move the conveyor belt?

Assumptions:

  1. Diameter of Pulley: 7 cm
  2. Mass: 7 kg
  3. Coefficient of Friction: .3
Question 3 Calculation

Question 3 Calculation

Question 4: How much force is required to turn the knob on the back of the light?

Assumptions:

  1. Potentiometer torque: 300 g-cm
  2. Diameter of Potentiometer = .6 cm
Question 4 Calculation

Question 4 Calculation

Question 5: How many GPIO are needed to adequately control the system?

Question 5 Calculation

Question 5 Calculation

Question 5

Question 5

Question 6: Can an automatic image crop program be integrated into CaptureOne with AppleScript?

Assumptions:

Analysis:

  1. AppleScript can call shell scripts, so we will be able to access the script.
  2. We will have access to the RAW image after capture.
    • RAW image is ~60 MB, might be time consuming to load in/decode
  3. Will need to return crop dimension to AppleScript
    • We can set the crop dimensions for an image variant using the CaptureOne AppleScript dictionary.
    • Shell scripts can return text to AppleScript (so we can return the crop dimensions)

Given the above, it should be very possible. Got a prototype working on Rahul’s laptop. It’s really slow and crops to the wrong rectangle, but it shows that it is possible.

Morphological Chart and Concept Selection

Purpose

Analysis was used to explore all possible solutions to a multi-dimensional, non-quantified problem

Morphological Chart

Morphological Chart

Concept Development

Purpose

Generate new concept options or combinations that can potentially exceed the benchmark concepts
Concept 1

Concept 1

Concept 2

Concept 2

Concept 3

Concept 3

Concept 4

Concept 4

Concept Summary

Concept Summary

Concept Selection

Our PUGH Chart can be seen below:
PUGH Chart for Concept Selection

PUGH Chart for Concept Selection

A PUGH chart for microcontroller selection was also constructed:
PUGH Chart for Microcontroller selection

PUGH Chart for Microcontroller selection

Designs and Flowcharts

Camera Height Controller

Camera Height Controller

Light controller

Light controller

System Drawing

System Drawing

Updated Flowchart

Updated Flowchart

CaptureOne integrated autocrop flowchart

CaptureOne integrated autocrop flowchart

CaptureOne integrated file renaming flowchart

CaptureOne integrated file renaming flowchart

Systems Architecture

Systems Architecture

Systems Architecture

Risk Assessment

We've made several additions to our risk assessments during this phase (seen in red below) :
Updated Risk Management Assessment

Updated Risk Management Assessment

Design Review Materials

Please see this pre-read that was created in preparation for the system design review on 10/11/18.

Plans for next phase

As a team, we plan on having a single design ready to be developed. The team will work to use engineering to prove that the design can work on paper. Some items may be fabricated or ordered and preliminary testing may take place.

The next phase of the project involves the completion of several key tasks:

Also see our three week plans for more detailed information on our plans for the next phase.


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