Micro Strain GaugeWireless Real Time Measurement Andrew Grimaldi & Sarah Satterlee E S D I I I S P G 1 2 T 3
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 SpecificationsTransmitter:• 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 SpecificationsReceiver:• 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