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A n d r e w G r i m a l d i & S a r a h S a t t e r l e eE S D I I I S P G 1 2 T 3
Micro Strain GaugeWireless Real Time Measurement
Project Goals
• Design and implement a product as a team in one quarter.
• Use good project management
• Work with our product owners: Texas Instruments (MAVRK Team) Mechanical Engineering Technology Department
Develop a Wireless Micro-Strain Gauge DAQ System
The Strain Gauge
• A device to measure the compression or stretch of a physical member
• Movement produces small changes in resistance
• The more sensors the more accurate
High Level Specifications
• Use TI’s MAVRK Platform• Design and produce a wireless device to transmit
strain gauge data
• Allow up to 24 channels of data per device
• Have the capability to have multiple devices
• Develop a GUI to interact with the device
• Provide detailed documentation
Functional Level Specifications
Transmitter:• Use multiple ADS1234 ADC’s to read values
through precision Wheatstone Bridges.
• Use discrete latches to hold configuration data for each ADS1234
• Use a DP4T analog switch to access SPI on different chips.
Functional Level Specifications
Receiver:• Use MAVRK’s CC1101 radio module• Receive multiple handles from multiple
transmitters• Forward a 15-Byte data packet to the PC• Use QT Tools to create a GUI:• Serial Communication• PC Packet Decoding• Real-Time Data Graphs• Transmitter Settings Configuration
Project Management
• Project managed by:• Confluence• JIRA• Agile SCRUM• SVN
Collaboration:• Weekly Friday meetings• Monday night lab• E-mail, text, verbal
Project Management (cont)
• JIRA• Kept us on task
• Provided organization
• Showed us our performance
• Showed overall progress
Learning Outcomes
• Time management is critical
• Documentation is paramount
• How to work effectively as a team
• Communication skills