Alarm for security tag
US8410926B1 · kind B1 · utility
22Cited by
29References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2010 |
| Grant date | Apr 2, 2013 |
| Priority date | — |
| Expiry date | Jun 25, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0271
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A security system can include a tag unit adapted to be secured to an infant via band. The first tag unit can include a temperature sensor, and a capacitance sensor. A temperature alarm can be provided in response to a negative slope of a temperature curve associated with temperature data from the temperature sensor. A capacitance alarm can be provided in response to a comparison to capacitance data from the capacitance sensor to a baseline when the tag unit is not secured to the infant. A resistance alarm can be provided in response to resistance data indicating a spike in resistance followed by a relatively flat line response.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.