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Subsystem Build & Test

Table of Contents 1 Team Vision for Subsystem Level Build & Test Phase 2 Test Results Summary 3 Risk and Problem Tracking 4 Functional Demo Materials 4.1 Bluetooth Functionality 4.2 Deflection Analysis 5 Plans for next phase

Team Vision for Subsystem Level Build & Test Phase

What We Planned to Do:

• Begin work on LabView code
• Solder and wire strain gauges
• Update risk assessment and project plan
• Update WBS links on EDGE
• Test and validate amplifier circuit
• Test and validate Bluetooth functionality

What We Did:

• Began work on LabView code
• Soldered and wired strain gauges
• Updated risk assessment and project plan
• Updated WBS links on EDGE
• Tested and validated Bluetooth functionality
• Tested amplifier circuit
• Consulted subject matter expert, Mike Walker
• Tested deflection of structure and validated against ANSYS model

What Went Wrong:

• Voltage output from Wheatstone Bridge is too low (1/1000 of expected voltage)
• Amplifier circuit is not able to boost the signal enough to be usable
• Possible causes include:
  • Incorrect strain gauge placement
  • Faulty solder/wire connections
  • Faulty amplifier circuit
  • Structure may be too rigid
  • Incorrect testing procedures

What Will be Done:

• Re-analyze amplifier circuit for micro volts
• Come up with integration solution
• Schedule dates for test plans to be carried out

Test Results Summary

Click here to download a pdf version of Test Plan S6.

Risk and Problem Tracking

Risk Assessment

Risk Graph

Functional Demo Materials

Bluetooth Functionality

• The functionality of bluetooth transmission will be demonstrated during this review. The first demonstration will show transmission of packets of data from the MSP430 as planned for the project.

• The next demonstration will show a signal from a function generator to a MSP432 being sent over bluetooth and plotted live.

• As per test plans, bluetooth transmission capability was found to be 150 ft in the machine shop.

Deflection Analysis

Using a pulley and weight system and a milling machine to hold the rotating dynamometer in place while keeping a static load on it.

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Plans for next phase

Live MSD II Project Plan

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