METHOD AND SYSTEM FOR THE SECURE DETECTION OF AN RFID ELECTRONIC TAG

• US 20130120122A1
• Filed: 09/13/2012
• Published: 05/16/2013
• Est. Priority Date: 11/16/2011
• Status: Active Grant

• Current Assignee: Schneider Electric Industries SAS (Schneider Electric SE)
• Original Assignee: Schneider Electric Industries SAS (Schneider Electric SE)
• Inventors: AUGER, Marc, NEBOUT, Jean-Marie
• Granted Patent: US 8,860,556 B2
• Time in Patent Office: Days
• US Class Current: 340/10.51
• CPC Class Codes: F16P 3/08 in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts

Abstract

The invention relates to a method and a system for the secure detection of an RFID electronic tag (ET1). This detection system comprises a read/write station (1), said station (1) comprising first processing means (12) and second processing means (13), the first processing means (12) and the second processing means (13) making it possible to read in parallel control data (CD) previously written in the RFID electronic tag (ET1) when the RFID electronic tag (ET1) is located within range of the station. The station controls the state of the machine according to the processing performed.

Claims

1. Secure detection method implemented in a secure detection system intended to detect the presence of an RFID electronic tag, said system comprising a read/write station, said read/write station comprising an RFID communication interface intended to exchange data with the RFID electronic tag, first processing means connected to the RFID communication interface and second processing means connected to the RFID communication interface, said method comprising

a step of storage, by the first processing means and by the second processing means, of a unique identifier of the RFID electronic tag and of storage of control data associated with this unique identifier,

a writing step controlled by the first processing means for writing the control data in the RFID electronic tag,

a reading step implemented in parallel by the first processing means and by the second processing means for reading the control data sent by the RFID electronic tag when the RFID electronic tag is located within the field of the read/write station,

a checking step implemented by the first processing means and the second processing means for performing a check on the control data read against the control data stored during the storage step,

a step of generation, by the first processing means and by the second processing means, of two output signals taking into account the check performed during the checking step.

2. Method according to claim 1, wherein a step of selection and of activation of the RFID electronic tag is implemented by the reading and checking made by the first processing means and the second processing means, of the unique identifier stored in the RFID electronic tag.

3. System for the secure detection of an RFID electronic tag storing a unique identifier, comprising a read/write station, wherein said read/write station comprising:

an RFID communication interface intended to exchange data with the RFID electronic tag,

first processing means connected to the RFID communication interface and comprising means for storing the unique identifier and control data associated with this unique identifier, means for writing control data in the RFID electronic tag and reading means for reading the control data stored in the electronic tag,

second processing means connected to the communication interface and comprising means for storing the unique identifier and control data, and reading means for reading the control data stored in the RFID electronic tag,

the first processing means and the second processing means comprising means for checking the control data read in the RFID electronic tag against the control data stored in the storage means,

means for generating output signals activated by the first processing means and by the second processing means on the basis of the check performed by the checking means.

4. System according to claim 3, wherein the first processing means and the second processing means comprise means for reading and checking the unique identifier of the RFID electronic tag.

5. System according to claim 3, wherein the RFID communication interface comprises an antenna.

6. System according to claim 3, wherein a serial bus is installed between the RFID communication interface, the first processing means and the second processing means.

7. System according to claim 3, wherein a parallel bus is installed between the RFID communication interface, the first processing means and the second processing means.

8. System according to claim 3, wherein a communication channel is installed between the first processing means and the second processing means.

9. Detection system according to claim 3, wherein the RFID electronic tag is fixed to an access means to a hazardous area and in that the read/write station is fixed to the frame of the access means.