Invention Grant
- Patent Title: Method of recognizing whether a transponder of an RFID system is present in a boundary region, RFID system and safety switch
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Application No.: US14878209Application Date: 2015-10-08
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Publication No.: US10467441B2Publication Date: 2019-11-05
- Inventor: Victor Kok Heng Phay
- Applicant: SICK AG
- Applicant Address: DE Waldkirch/Breisgau
- Assignee: SICK AG
- Current Assignee: SICK AG
- Current Assignee Address: DE Waldkirch/Breisgau
- Agency: Nath, Goldberg & Meyer
- Agent Jerald L. Meyer; Stanley N. Protigal
- Priority: EP14188628 20141013
- Main IPC: G06K7/10
- IPC: G06K7/10
Abstract:
The present invention relates to a method of recognizing whether a transponder of an RFID system, comprising a reading device and the transponder, is present in a boundary region, wherein a comparison is made with at least one threshold value. In accordance with the invention a bit error rate of signals transmitted between the transponder and the reading device is determined and the at least one threshold value comprises a predefined bit error rate for signals transmitted between the transponder and the reading device. The invention further relates to an RFID system and to a safety switch.
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