Project sponsor

Seventh Framework Programme

Evropska unija

Information Society Technologies

 
 
 

Sitting down normally

Tripping

Lying down normally

Fainting

Sitting down quickly

Falling when trying to stand up - slow

Jumping in bed

Falling when trying to stand up - quick

Searching under table

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.

XSens Ubisense Person

XSens
Figure 1: The Xsens tags used for acceleration measurements.
Ubisense
Figure 2: The Ubisense tags used for localization measurements in the Confidence system.
Ubisense
Figure 3: The user wearing the equipment.
 
 
 
Department of Intelligent Systems, Jo┼żef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
Phone: +386 1 477 3968 Fax: +386 1 477 3131