M.A.D. Sleeve Muscular Atrophy Detection Group 13: Jason Wilensky and Patrick Wasz J
What is Muscular Atrophy Loss of muscle tissue due to: Neurogenic damage Disease Low-gravity environments J
About Muscular Atrophy Many diseases cause muscular atrophy Cancer, AIDS, Polio Current best monitoring method: CT Scan Device is expensive Device is massive Each test is expensive J
Our Device Offers... Cost effective measurement Total Cost: $50 + Electrodes Convenient measurement Measurement Analysis J
Objectives Ability to measure multiple muscles simultaneously Ability to use the device anywhere Ability to conveniently replace electrodes J
Block Diagram J
Sensor Unit J
Electrodes Muscle Surface Sensor EMG Electrodes Conductive and Adhesive Hydrogel Polymer Ag/AgCl coated sensors Stainless Steel connector J
Printed Circuit Board Takes electrode Voltages in Puts them into a MUX Selects a Voltage Amplifies it Sends it to the Microcontroller J
Power and Communications Unit
Communication Link Power Microcontroller Transmit Data UART Interface 9600 baud ADC 12 bit converter P
Microcontroller Intake sensor data Uncertain amount of time Output data to text Better Manipulation CoolTermWin Sensor values -> voltage values P
Battery Power Source Consistent Reliable P
Computer Software Unit
Computer Data Storage Data as .txt At least 400 samples Easily manipulable P
Computer Data Analysis Statistical Data Trends, Noise, Consistency Data over time P
Display Graphical display of information MATLAB plotting Used previously parsed data P
Sample Code P
Miscellaneous P
Flow of Information Data Processed Data Select Power Analog Signal Selected Analog Signal P
Muscle Density Equations P
Plots J
Oscilloscope Background Noise J
Bicep Test Comparison Fresh Electrodes Old Electrodes J
Old Sensor Noise J
Variation of Electrode Placement on Bicep At Elbow Middle of Bicep J
Jason vs Patrick Bicep Test
Effect of Isopropyl Application Without Isopropyl With Isopropyl J
Monitoring Over Time J
Op Amp Circuit P
Sources of Error Electrode connections were done with stripped wires Connections held in place with tape Skin impedance is not negligible Body composition changes constantly P
Biological Sources of Error Recent meals Exercise Water intake P
What Went Wrong Poor PCB design Improper PCB Order Time management P
Conclusion Accomplished Read and calculated data off of sensor Found consistency in data collection Designed the platform to develop future technologies Future Work Improve data collection from different sensors P
Future Design: Hardware Bluetooth electrodes Full body Improved sleeve integration PCB with through-holes J
Future Design: Software Bad data recognition Density heatmap P
Thank you! Any Questions? P