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Tests for IAAI
Description of fall and non-fall events
Instructions: Click the figure to see the movie.
| No |
Description |
Fall |
End position
(click figure for movie) |
| 1 |
Sitting down normally on the chair |
No |
 |
| 2 |
Tripping, landing flat on the ground |
Yes |
 |
| 3 |
Lying down normally on the bed |
No |
|
| 4 |
Falling slowly (trying to hold onto furniture), landing flat on the ground |
Yes |
|
| 5 |
Sitting down quickly on the chair |
No |
|
| 6 |
Falling when trying to stand up, landing sitting of the ground |
Yes |
 |
| 7 |
Lying down quickly on the bed |
No |
|
| 8 |
Falling slowly when trying to stand up (trying to hold onto furniture), landing sitting of the ground |
Yes |
|
| 9 |
Searching for something on the ground on all fours any lying |
No |
 |
Performance evaluation of the Confidence system and systems using accelerometers.
| Event |
Confidence |
Accelerometers |
| Four tags |
One tag |
Thr. |
Thr., or. |
Thr., or., con. |
ML |
ML, con. |
| FALLS |
| Tripping (2) |
100.00 |
93.9 |
100.00 |
100.00 |
100.00 |
89.2 |
82.2 |
| Falling slowly (4) |
95.9 |
100.0 |
10.6 |
10.6 |
100.00 |
90.8 |
90.8 |
| Falling sitting (6) |
91.8 |
85.7 |
48.9 |
12.8 |
55.3 |
86.2 |
86.2 |
| Falling sitting slowly (9) |
91.8 |
89.8 |
17.2 |
6.4 |
38.3 |
90.8 |
90.8 |
| NON-FALLS |
| Lying quickly (7) |
100.0 |
100.0 |
34.0 |
34.0 |
100.0 |
7.7 |
100.0 |
| Sitting quickly (5, 8) |
100.0 |
100.0 |
36.2 |
96.8 |
100.0 |
1.5 |
100.0 |
| Searching on the ground (10) |
83.7 |
61.2 |
100.0 |
100.0 |
78.7 |
12.3 |
12.3 |
| Average |
94.7 |
90.1 |
49.6 |
51.5 |
81.8 |
54.1 |
80.3 |
| Other false alarms |
2 |
1 |
0 |
0 |
0 |
10 |
10 |
Performance evaluation of the Confidence system and systems using accelerometers.
Equipment Used
Instructions: Click the thumbnail to see the bigger picture.
Figure 1: The Xsens tags used for acceleration measurements.
Figure 2: The Ubisense tags used for localization measurements in the Confidence system.
Figure 3: The user wearing the equipment.
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