Functional description

2 microcontrollers are integrated in the Car Sharing Module.

One microcontroller manages the following interfaces:

• CAN bus interface (Controller Area Network)
• LIN bus interface (Local Interconnect Network)
• Near Field Communication interface (NFC, ID reader)
• Card reader interface (= Radio Frequency Identification RFID, additional cards)
• SIM card and GSM aerial interface (= Global Standard for Mobile Communication GSM, Subscriber Identity Module SIM)
• Terminal 30 interface (DC/DC converter)

The Car Sharing Module is locked in the base plate in the center console.

Additional cards (refuelling, parking, charging) are inserted in a holder in the Car Sharing Module and monitored by the CSM control unit. A label (RFID with 125 kHz) is stuck onto additional cards so that they can be monitored.

Courtesy of BMW OF NORTH AMERICA, INC.

The Car Sharing Module is a further development with the following features:

• Low standby current consumption
• Stable online connection
• High safety standard
• Optimized conversion
• Service capability in the dealer organization
• Quality in series production