1. Posture Correction System International Team (Mechanical and Environmental Informatics) Ahmet Cetinkaya Wonjun Choi Yusuke Ejiri Takuya Iwaki Chris Yao Mechanical and Environmental Informatics Project November 25, 2009 Instructor: Tomohisa Hayakawa

2. Contents Statistics Purpose Project scope Implementation Feasibility System Overview Questions

3. Statistics Over 10 million days lost per year due to musculo-skeletal absence per year (UK) Millions spent on therapy and treatment Reasons for back-pain or injuries among 13,808 people in Japan Deskwork – 43.8% Bad posture – 42.9%

4. Purpose Correct posture for computer usage Reduced medical coverage Increase overall health Extensive add-on capabilities

5. Project scope Device connected to the computer and user Detects whether user is in ideal posture or not Warns user when deviating from ideal posture Alarm system for extended computer usage Tailored to each user’s individual needs

6. Implementation Hardware - SunSpot ▫One host device, two slave devices ▫Slave devices attached to user, possibly shoulder blades or chest idea ▫Accelerometer detecting change in posture ▫Host device connected to the computer ▫Wireless communication between host and slave

7. Implementation (2) Software ▫Programmed in Java ▫Detection algorithm for changes in accelerometer ▫Warning system ▫Timer ▫User interface to customize the Sunspot devices as well as the entire program

8. Feasibility Sunspot compatible with almost all platforms User interface programmed in Java for easy integration Source code control through Google code Tasks divided between hardware and software

9. Steps for initializing posture correction system Posture Correction System User places two SunSPOT Devices to his/her body User sets his/her own ideal posture User sets his/her preferences User starts the posture correction system 1234

10. Posture Correction System Features Steps for initializing posture correction system Posture Correction System User places two SunSPOT Devices to his/her body User sets his/her own ideal posture User sets his/her preferences User starts the posture correction system 1234 Warnings when deviation from ideal posture Alarm system Continuous visual feedback Graphical User Interface

11. Posture Correction System Features Steps for initializing posture correction system Posture Correction System User places two SunSPOT Devices to his/her body User sets his/her own ideal posture User sets his/her preferences User starts the posture correction system 1234 Warnings when deviation from ideal posture Alarm system Continuous visual feedback Graphical User Interface Different Levels of Warnings 1.Textual warning 2.Warning by sound 3.Disabling mouse/keyboard 4.Shutting down the computer

12. Posture Correction System Features Steps for initializing posture correction system Posture Correction System User places two SunSPOT Devices to his/her body User sets his/her own ideal posture User sets his/her preferences User starts the posture correction system 1234 Warnings when deviation from ideal posture Alarm system Continuous visual feedback Graphical User Interface Alarm System 1.Encourage user to take breaks 2.Warn user to take a rest if working too long 3.Warn user to go back to work if resting too long

13. Posture Correction System Features Steps for initializing posture correction system Posture Correction System User places two SunSPOT Devices to his/her body User sets his/her own ideal posture User sets his/her preferences User starts the posture correction system 1234 Warnings when deviation from ideal posture Alarm system Continuous visual feedback Graphical User Interface Continuous visual feedback 1.Show user’s posture on display 2.Graphs and timers

14. Posture Correction System Features Steps for initializing posture correction system Posture Correction System User places two SunSPOT Devices to his/her body User sets his/her own ideal posture User sets his/her preferences User starts the posture correction system 1234 Warnings when deviation from ideal posture Alarm system Continuous visual feedback Graphical User Interface 1.Customizing the software 2.Save/Load user settings 3.Set levels of warnings 4.Customizing SunSPOT devices

15. Questions

16. References Sunspot ▫one basestation Sun SPOT unit with USB power ▫two free-range Sun SPOT units with onboard battery ▫Dimensions of the Sun SPOT are 41 x 23 x 70 mm. Weight is about 54 grams. ▫http://sunspotworld.com/docs/Red/SunSPOT- OwnersManual.pdfhttp://sunspotworld.com/docs/Red/SunSPOT- OwnersManual.pdf

17. References (2) Statistics and charts http://www.myvoice.co.jp/biz/surveys/11908/index.h tml