1. M.A.D. Sleeve Muscular Atrophy Detection
Group 13:
Jason Wilensky and Patrick Wasz J

2. What is Muscular Atrophy
Loss of muscle tissue due to:
Neurogenic damage
Disease
Low-gravity environments J

3. 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

4. Our Device Offers... Cost effective measurement
Total Cost: $50 + Electrodes
Convenient measurement
Measurement Analysis J

5. Objectives Ability to measure multiple muscles simultaneously
Ability to use the device anywhere
Ability to conveniently replace electrodes J

6. Block Diagram J

7. Sensor Unit J

8. Electrodes Muscle Surface Sensor EMG Electrodes
Conductive and Adhesive Hydrogel
Polymer Ag/AgCl coated sensors
Stainless Steel connector J

9. Printed Circuit Board Takes electrode Voltages in Puts them into a MUX
Selects a Voltage
Amplifies it
Sends it to the Microcontroller J

10. Power and Communications Unit

11. Communication Link Power Microcontroller Transmit Data UART Interface
9600 baud
ADC 12 bit converter P

12. Microcontroller Intake sensor data Uncertain amount of time
Output data to text
Better Manipulation
CoolTermWin
Sensor values -> voltage values P

13. Battery
Power Source
Consistent
Reliable P

14. Computer Software Unit

15. Computer Data Storage Data as .txt At least 400 samples
Easily manipulable P

16. Computer Data Analysis
Statistical Data
Trends, Noise, Consistency
Data over time P

17. Display Graphical display of information MATLAB plotting
Used previously parsed data P

18. Sample Code P

19. Miscellaneous P

20. Flow of Information Data Processed Data Select Power Analog Signal
Selected Analog Signal P

21. Muscle Density EquationsP

22. Plots J

23. Oscilloscope Background NoiseJ

24. Bicep Test Comparison
Fresh Electrodes
Old Electrodes J

25. Old Sensor Noise J

26. Variation of Electrode Placement on Bicep
At Elbow
Middle of Bicep J

27. Jason vs Patrick Bicep Test

28. Effect of Isopropyl Application
Without Isopropyl
With Isopropyl J

29. Monitoring Over Time J

30. Op Amp Circuit P

31. 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

32. Biological Sources of Error
Recent meals
Exercise
Water intake P

33. What Went Wrong
Poor PCB design
Improper PCB Order
Time management P

34. 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

35. Future Design: Hardware
Bluetooth electrodes
Full body
Improved sleeve integration
PCB with through-holes J

36. Future Design: Software
Bad data recognition
Density heatmap P

37. Thank you!
Any Questions? P