Fall detection device

Details Fall detection device Fall detection device

2007-01-11

2008-08-19

Lau, Tung S (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Speed

Reexamination Certificate

active

07415380

ABSTRACT:
In a fall detection device, when a first composite vector value of a first acceleration component obtained from a three-axial acceleration sensor is greater than a rotating fall determining value, or smaller than a free fall determining value, a possibility of a fall is determined. When a second composite vector value of a second acceleration component obtained after a determining time interval is greater than the rotating fall determining value, and an angular difference of each testing surface is greater than an angular difference determining value, it is determined to be in the middle of a fall. Further, when a third composite vector value of a third acceleration component obtained one more time is smaller than the free fall determining value, it is determined to be in the middle of a fall.

REFERENCES:
patent: 2005/0141127 (2005-06-01), Shimotono et al.
patent: 2000-162235 (2000-06-01), None
patent: 2005-37300 (2005-02-01), None

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