1. BodyTrack
BodyTrack: Open Source Tools for Health
Empowerment through Self-Tracking
Anne Wright, CREATE Lab, CMU
Thursday, July 28, 2011

2. Overview
 Origin story
 Approach and system description
- Explorable data viewer
- Custom device development: Microclimate basestation, Cheststrap
- Server components
 QS Ecosystem gardening
 Quantified Health Evangelism
 Get Involved!
- Sign up to keep informed of progress: http://bit.ly/btsub
- Main web site: http://bodytrack.org/
- Developer site: http://bodytrack.org/developers.html
- Github site: https://github.com/BodyTrack
- Email me, Anne Wright arwright@cmu.edu
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

3. The beginning: Robots!
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

4. NASA Ames Rovers
Marsokhod K9
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

5. Too sick to work on rovers
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

6. Human System Debugging
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

7. What type of food matters!
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

8. Wide variation in reaction to inputs
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

9. Study biochemistry at CMU
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

10. Search for better tools for Human System Debugging
Great, but can’t graph on same time axes!
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

11. BodyTrack
Actigraphy:
Activity and energy levels
BodyTrack chest strap:
EKG, respiration, accelerometry, temp, humidity;
stress, cough/sneeze, snoring
Smart phone apps:
Pictures, GPS location, activity;
food, events, self-reporting
BodyTrack
Web Server and Datastore
BodyTrack Microclimate
Indoor air quality Environmental Basestation:
Temp, humidity, barometric, sound levels, light;
Sleep hygiene, air quality (with external sensor)
Regional data sources:
Weather, air particulates, other pollutants,
Weight Sleep logging pollen, mold, water quality
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

12. Aggregate existing pieces
Actigraphy:
Activity and energy levels
BodyTrack chest strap:
EKG, respiration, accelerometry, temp, humidity;
stress, cough/sneeze, snoring
Smart phone apps:
Pictures, GPS location, activity;
food, events, self-reporting
BodyTrack
Web Server and Datastore
BodyTrack Microclimate
Indoor air quality Environmental Basestation:
Temp, humidity, barometric, sound levels, light;
Sleep hygiene, air quality (with external sensor)
Regional data sources:
Weather, air particulates, other pollutants,
Weight Sleep logging pollen, mold, water quality
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

13. Build missing pieces!
Actigraphy:
Activity and energy levels
BodyTrack chest strap:
EKG, respiration, accelerometry, temp, humidity;
stress, cough/sneeze, snoring
Smart phone apps:
Pictures, GPS location, activity;
food, events, self-reporting
BodyTrack
Web Server and Datastore
BodyTrack Microclimate
Indoor air quality Environmental Basestation:
Temp, humidity, barometric, sound levels, light;
Sleep hygiene, air quality (with external sensor)
Regional data sources:
Weather, air particulates, other pollutants,
Weight Sleep logging pollen, mold, water quality
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

14. Don’t throw away data!
3 KHz accelerometry on the chest can capture
Coughing, sneezing, snoring, speaking, more…
Full-rate ECG can capture
Stress levels, activity levels, more…
Audio during sleep can capture
Snoring, reasons for awakening, more…
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

15. Big Data
12 KSPS x 1 day = 1 billion samples per day
Not a job for MySQL
BodyTrack Datastore supports rapid access
across levels of detail (GigaPan)
BodyTrack Viewer allows rapid exploration of
billions of datapoints
Easy to add real-time computation to combine data
and generate new metrics
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

16. Open-Source Sensor Projects
 Family of open source sensors sharing a common technology base
 XMEGA processor, log data to SDHC, interface to host over FTDI USB
 Firmware supporting both current designs at https://github.com/BodyTrack/BodyTrack_CustomLoggers
 Java gateway code at https://github.com/BodyTrack/bodytrack-logger-gateway
 Microclimate Environmental Basestation (Hardware; firmware in C)
 Hardware design at https://github.com/BodyTrack/Schematic_BaseStation
 Version 3 currently in alpha test; approaching beta-quality.
 Directly measures temperature, humidity, barometric pressure, sound and light levels
 Interfaces to Dylos air particulate monitors over serial
 Supports introspection on sleep hygiene, circadian rhythm, respiratory stressors, etc.
 Chest Strap
 Hardware design at https://github.com/BodyTrack/Schematic_ChestStrap
 Directly measures EKG, respiration, accelerometry, temperature, and humidity
 Supports work on derived metrics for stress (HRV), coughing, sneezing, snoring, etc.
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

17. BodyTrack Server Projects
 Fast datastore (C++)
- Implements multi-resolution data tiling on top of key/value store (default is filesystem)
- Scales to 1TB per channel
- Response time < 10 msec for tiles at any level of detail, even summary of entire 1TB
- In process of deploying to alpha website to replace original MySQL-based datastore
 BodyTrack Website (Ruby On Rails, MySQL)
- Very active development; currently in transition to incorporate fast datastore
- REST APIs for data upload and, query of device/channel data for account, and multi-res tile fetch
 Explorable data viewer (Javascript/HTML5 Canvas/GWT)
- Interactive exploration of very large datasets
- Pulls in data on the fly as user zooms and explores
- In process of specifying interface to Website and making available as separate project
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

18. BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

19. BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

20. BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

21. Build synergy and community
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

22. Cultivate new sensors
Encourage exportability and good timestamps!
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

23. Quantified Health Evangelism
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011

24. Help us build this!
 Tools or stories to share?
 Issues you want to track?
 Want to contribute to development?
 Get Involved!
- Sign up to keep informed of progress: http://bit.ly/btsub
- Main web site: http://bodytrack.org/
- Developer site: http://bodytrack.org/developers.html
- Github site: https://github.com/BodyTrack
- Email me, Anne Wright arwright@cmu.edu
BodyTrack: Open Source Tools for Health Empowerment through Self-Tracking
Thursday, July 28, 2011