1. Jordan Garth
ELSYS Co-op II
Georgia Tech Research Institute

2. Projects
ž Balance study in conjunction with Georgia
Tech using ballerinas and novices
ž ISSS working on patient status monitor

3. Project 1: Ballerinas
ž In this study:
— The subject wears markers that reflect from
LED infrared lights to show position in space
— GTRI provides accelerometer to find
orientation of the dancer and acceleration in
the body frame
ž Current contribution:
— Installation of sensors, data collection,
troubleshooting, and general support

4. Project 1: Ballerinas cont.
ž Future contribution: data analysis
— Goal from the data is to get the overall body
acceleration from the body frame angular
rate and body frame angular acceleration
Using the laws of motion in a rotating reference frame

5. Project 2: ISSS PSM Beginning
ž Three main watch comparisons
BasisMio AlphaAdidas MiCoach

6. Project 2: ISSS PSM Feedback
ž Wearable devices on the wrist are popular (solar watches)
ž Charging strips are limited on deployment (lasting up to
days at a time), and therefore power could make some
solutions impractical
ž Adidas was through to be uncomfortable due to its wide
form factor
ž Overall, it was decided that preferences would lean towards
a BASIS functionality in a Mio profile with a Mio band.
ž Some concern exists that larger watch faces will snag of
cuff buttons and be difficult to access
ž Gloved operation was not an issue, although the BASIS
was preferred because one could be less precise.

8. Project 2: ISSS PSM Testing
ž Basis versus Mio Alpha compared on pulse oximeter
ž Resting HR Procedure:
— Put both on approx at same time, Wait 1 min, Record
ž Elevated HR procedure:
— 20 jumping jacks, Wait 15 seconds, Record

9. Project 2: ISSS PSM Testing
ž Same procedure compared to ECG

10. Project 2: ISSS PSM conclusion 1
ž Mio Alpha based on its superior
accuracy is the best watch
— Now onto additional testing and redesigns

11. Final testing: Mio Alpha
ž Test that simulates soldier conditions:
— Resting HR for 30 minutes
— 50% HR (for 20-30 year olds, this is between
100-130 bpm)
— 80% HR (for 20-30 year olds, this is between
150-180)

12. Resting Heart Rate
0
10
20
30
40
50
60
70
80
90
100
10:36:51
10:37:41
10:39:11
10:40:01
10:41:21
10:42:51
10:44:01
10:45:21
10:46:31
10:47:51
10:49:11
10:50:21
10:51:31
10:52:21
10:54:41
10:56:21
10:57:51
10:59:11
11:00:01
11:01:31
11:02:51
11:04:41
11:06:01
11:07:01
Mio HR
GE HR
Kyle Land Resting HR
Average Error:
4.992092
0
10
20
30
40
50
60
70
80
90
100
14:44:43
14:46:03
14:47:03
14:48:13
14:49:03
14:49:53
14:51:03
14:52:13
14:53:13
14:54:23
14:55:13
14:56:23
14:57:33
14:58:33
15:00:04
15:01:03
15:02:13
15:03:13
15:04:04
15:05:33
15:06:33
15:07:34
15:08:33
15:09:33
15:10:33
15:12:23
15:13:14
15:14:13
15:15:13
John McClure Resting HR
mio ge
Average
Error
4.621705

13. 50% Heart Rate
0
20
40
60
80
100
120
140
11:12:59
11:13:39
11:13:59
11:14:29
11:14:49
11:15:09
11:15:29
11:15:49
11:16:09
11:16:49
11:17:19
11:17:39
11:17:59
11:18:19
11:18:39
11:19:09
11:19:29
11:19:49
11:20:19
11:20:39
11:20:59
11:21:29
11:21:49
11:22:09
11:22:29
11:22:59
Kyle Land Medium HR
mio ge
Average percent error: 1.418672
0
20
40
60
80
100
120
140
160
John McClure HR
Mio GE
2.139142
Average percent error:

14. 80% Heart Rate
0
20
40
60
80
100
120
140
160
180
11:26:04
11:26:24
11:26:34
11:26:44
11:27:34
11:27:44
11:27:54
11:28:43
11:29:04
11:29:14
11:29:34
11:29:44
11:29:53
11:30:04
11:30:14
11:30:24
11:30:44
11:30:54
11:31:03
11:31:14
Kyle Land
MIO GE
Average percent error: 1.971294
0
20
40
60
80
100
120
140
160
180
200
11:00:47
11:00:57
11:01:06
11:01:17
11:01:27
11:01:36
11:01:57
11:02:06
11:02:37
11:02:46
11:03:07
11:03:16
11:03:26
11:03:37
11:03:47
11:03:56
11:04:26
11:04:36
11:04:47
11:04:57
11:05:06
11:05:17
11:05:27
11:05:36
11:05:46
John McClure
Average percent error: 2.692379

15. Redesign 1:
Basic

16. Redesign 2:
Hildago

17. Redesign 3:
Stella

18. Solidworks of Hildago

19. Future designs and contributions
ž May consider other designs after
thinking about the logistics
ž Incorporating better battery life
ž Smaller fuel cell
ž Soldier feedback

20. Questions?