Displacement measurement in a fall detection system
US9138174B2 · kind B2 · utility
18Cited by
2References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2009 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | May 14, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0219
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
There is provided a personal fall detection system comprising a sensor module that is suitable for attachment to a user, the sensor module comprising an accelerometer for measuring accelerations acting on the sensor module; and a processor for analyzing the measured accelerations to determine if the sensor module has suffered an impact, and for estimating a vertical displacement of the sensor module during a time period immediately before the impact; wherein the processor estimates the vertical displacement of the sensor module by twice integrating the measurements from the accelerometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.