Access control system that detects static electricity
US9478086B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2015 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Nov 30, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/101
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An access control system removes the human element from static protection by detecting a level of static energy when the user attempts to authenticate to the access control system, and when the user's detected level of static energy exceeds a defined threshold, access is denied until the user discharges the static energy. A static energy detection mechanism in a badge reader includes two conductive plates that form a first capacitor, and the space between an electrically conductive badge and one of the conductive plates on the badge reader forms a second capacitor. Using these two capacitors, the level of static energy on the user can be measured by the sum of the voltage across these two capacitors as the user presents the badge to the badge reader. The access control system assures the user is properly grounded before allowing access to an area, equipment, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.