P19571: Solar Spectrograph

Detailed Design

Table of Contents

1 Team Vision for Detailed Design Phase
2 Progress Report
3 Feasibility: Prototyping, Analysis, Simulation
4 Drawings, Schematics, Flow Charts, Simulations
5 Bill of Material (BOM)
6 Engineering Requirements | Test Plans
7 Design and Flowcharts
8 Risk Assessment
9 Design Review Materials
10 Plans for next phase

Team Vision for Detailed Design Phase

Plan for this phase is to keep building upon the preliminary design review and finalize all schematics, feasibility, flowcharts, Bill of material (order all parts before winter break) and schedule our priority dates and plans for MSD-II which the team was able to accomplish in this phase.

Progress Report

Team's progress in this phase was coming up with final- software design, status light, electrical schematics, test plans, and budget projections. Tasks that team needs to complete before MSD-II or start of MSD-II is to construct a POST at the observatory (Issue - Ground frozen) and contact previous team member for motor/software running assistance.

Feasibility: Prototyping, Analysis, Simulation

Feasibility - Run Integrated System

Single Parent Software vs Individual Control Systems:

Single Parent Software:
System is more streamlined

Multiple Related Software:

Much more difficult to determine failure modes
Multiple module components (Logically unconnected)
Mess in general

Feasibility - Wake up/Go to sleep

Read data from an online weather service:

Query data from HTML to write sun rise and sunset times to a .csv file that can be read by the system’s controlling software.

Feasibility - GUI

Modify and improve the current LabView GUI:

Base is already built from previous team(s) - time savings
Necessary to improve functionality of GUI.

Build web based application:

Would require brand new application to be build - much more time
Need to update ASRAS website anyways

Feasibility - Error Monitoring

MSP430:

Much more power efficient than Arduino
Serial Communication
Experience using the MSP430
Previous teams already planned on using this hardware

LED Detection on Security Camera:

Already checked regularly so the LED will be noticed quickly

Feasibility - Weather Protection

Read wind speed from the sensor - Most accurate, instant reading allowing dish to immediately go into a safety position

Snow - Not so straight forward. Read data from online weather service to prepare dish for upcoming storms

Feasibility - Interference Reduction

Plan to continue with horizontal dipole setup
Investigate whether this is the best solution or if there are other potential improvements to the current set up
Involves extensive RF testing and validation

Feasibility - Storage

500 GB SSD

15 min FIT file ~ 760 kB
24 hours of data at 15 minute intervals ~ 96 data point per day
24 hours of data ~ 73 MB per day

Assume up to 200 MB per day with various other files

500 GB / 200 MB = 2500... 6.85 years of data

Drawings, Schematics, Flow Charts, Simulations

The schmeatics stayed the same as the previous team (18571).

Electrial Schmetic Overview

Pin out

Arduino Mega Pinout Diagram

Bill of Material (BOM)

Budget - Overview for ASRAS

Post BOM

Engineering Requirements | Test Plans

Engineering Requirements

Engineering Requirement & Matrix

Individual Subsystems Testing
- Status Light
- Saving
- Wake/Sleep Time Database
- Motors/Sun-Tracker
- Emergency Park
Full System Testing
- Combined system initial tests
- Full day/weekend immersive tests