Energy-efficient indoor localization system and a method of reducing power consumption of a radio badge in the indoor localization system
US8159333B2 · kind B2 · utility
1Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2009 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Aug 28, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of reducing power consumption of a radio badge in a localization system is disclosed, in which the radio badge is carried by a tracked target and is provided with a pedometer for detecting a footstep count of the tracked target. The method includes: estimating a velocity of the radio badge according to the footstep count detected by the pedometer; calculating a sleep time from the velocity of the radio badge; and controlling the radio badge to discontinue emitting radio signals during the sleep time. An indoor localization system that performs the method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.