1. RFID in a production line
RFID - EN
RFID in a production line
RFID in a production line
J.-D. Chatelain

3. Start/End Station

4. The piece to be machined is fixed on a carrier
A transponder is embedded in the carrier
At the beginning of the production line, the instructions
related to the machining of the piece are written into the
memory of the transponder by means of a Read/Write
Module
Piece to be machined
Piece to be machined
Read/Write
Module
Carrier
Transponder

5. Workstation

6. The proximity sensor has activated the gate when the carrier is
passed in front of it
The information in the transponder has been read in order to program
the workstation accordingly
The operation programmed by the transponder has been executed
The result of the operation has been stored into the transponder
Piece to be
machined

8. Diverted track

9. As it has stored the operations to do on the piece to be
machined, the transponder linked to this piece contains
also the route the piece has to follow.
The transponder is read when the device goes in front of
the Read/Write Module and the deflector is activated
accordingly

11. Fieldbus

12. Fieldbus

13. Production line working

14. The operation is performed.
The operation to be performed is read in the tag and the machine is prepared accordingly.
The result of the operation is written into the transponder and the gate is opened.
The way which must be followed is read in the transponder and gate 3 is activated.
The way which must be followed is read in the tag and gate 4 is activated (or not).
The carrier is detected by a sensor which activates the gate af the workstation.
The next operation to do is read in the tag and Gate 2 is activated accordingly.
The carrier is detected by a sensor which activates the gate of Workstation 1.
The way the transponder must follow is read. Gate 1 is activated accordingly.
The instructions concerning the machining by Workstation 1 are read in the tag.
The machining is done
The result of the operation is written in the tag and the gate is opened.
Writing the production instructions in the transponder

15. 2 1 6 5 4 3

16. Reading or Writing
in a Transponder

17. Low frequency RFID systems and Contrinex RFID system which can
read/write through metal is relatively slow. In order to insure a successful
communication, it is recommanded to stop the device during reading/writing.
When a metallic object (the carrier for example) passes in front of the
inductive sensor, it triggers a stopper which will stop the carrier.
Conveyor
Conveyor
Fieldbus
Inductive
Sensor
Read/Write
Module
Stopper

18. RFID in a production line End of this chapter
RFID - EN
RFID in a production line
RFID in a production line
End of this chapter
J.-D. Chatelain