RENAULT CMF1 BCM BCM_CMF1_01

Transcription

1 Document: User Manual / Functional Description Project: RENAULT CMF1 BCM BCM_CMF1_01 Date: October 1, 2014 Number of pages: 10 Name: Department: Phone: Date: Sign: Author: Jérôme Lee I B&S CF PG3 CFRF /02/ Check: Josef Lohr I B&S CF PG3 CFRF /02/2014 Responsible: Patrick Mazo I B&S S /02/2014

2 VERSIONS LIST Version Date Author Comment, Description V1 10/01/2014 Jérôme Lee Creation RELATED DOCUMENTS Document Version Date Author Comment, Description ABBREVIATION REGISTER Abbreviation As ASK BCM CW DR FCC FSK LF RF RKE Description Assistant Amplitude Shift Keying Body Control Module Continuous Wave Driver Federal Communication Commission Frequency Shift Keying Low Frequency Radio Frequency Remote Keyless Entry Page 2 / 10

3 VERSIONS LIST... 2 RELATED DOCUMENTS... 2 ABBREVIATION REGISTER SYSTEM OVERVIEW SCOPE OF DOCUMENT SHORT DESCRIPTION OF THE COMPLETE CONTINENTAL I-KEY SYSTEM LF SYSTEM ANTENNA CONFIGURATION CAR ACCESS ENGINE START TECHNICAL DESCRIPTION BLOCK DIAGRAM RF PARAMETERS LF PARAMETERS TYPICAL RF & LF USAGE PATTERN VARIANTS PICTURES Page 3 / 10

4 1 SYSTEM OVERVIEW 1.1 Scope of Document The aim of this document is to provide a short overview on Renault CMF1 Hand free system. 1.2 Short Description of the complete Continental I-Key System The I Key system is an integrated system which includes: Key fob ID Models: IK4CH / IK4PL It includes a 315 MHz or MHz transmitters, a 125 khz LF receiver and a 125 khz transponder Four Wheel unit which include a MHz transmitter, a 125 khz LF receiver LF Antennae Kazashi includes a coil antenna for 125 khz transponder communication CMF1 Body Control Module (BCM) Model: BCM_CMF1_01 It includes a 125 khz LF long range and transponder transmitters and a 315 MHz or MHz receiver. The BCM drives 6 external dedicated antennae for the 125 khz transmission. Two are located in the Front doors handles, one in the Bumper and three within the vehicle cockpit. It includes also an integrated RF receiver for 315 MHz or MHz, the receiver is designed in direct placement. The system interacts with other modules such as: Push Engine Start ESCL USM The main functions performed by the system are: RKE functions (key less features) Hand Free functions for vehicle access and engine start Immobilizer LF antennae management Tire pressure monitoring system (TPMS) Page 4 / 10

5 RF / LF System architecture overview 1.3 LF system antenna configuration Page 5 / 10

6 2 Car Access There are two ways to Lock or Unlock the doors of the vehicle: 1. The first way is to use the remote key functionality (RKE) by pressing one of the Lock or Unlock buttons on the ID Key. Data frames are then transmitted at 315 MHz or MHz from the key fob ID of the car. The BCM processes the frames received and when the security code is correct, the doors are locked or unlocked automatically. Car access functions by remote control are allowed using any key fob type 2. The second way is to use the free hand mode Unlocking the vehicle : If the car is locked, when the door request switch located in the door is pressed by car user which has a car key fob, the BCM transmits data frames at 125 khz. When the key fob receives the data and recognizes the content of the inquiry, it transmits the code to the car at MHz or 315 MHz (depending of key fob frequency type). The BCM processes the frames received and when the code is correct, the doors are automatically unlocked. Locking the vehicle : If the car is unlocked, when the door request switch located in the door is pressed by car user which has a car key fob, the BCM transmits data frames at 125 khz. When the key fob receives the data and recognizes the content of the inquiry, it transmits the code to the car at MHz or 315 MHz (depending of key fob frequency type). The BCM processes the frames received and when the code is correct, the doors are automatically locked. Page 6 / 10

7 Car access functions by hand free are allowed using any key fob type. 3 Engine Start There are two ways to start the Engine: 1. When Hand free functions are disabled First User has to hold the key fob in front of Kazashi for at least than 30s after one of the following action: press of the START button on the dashboard, open or close a door or press vehicle brake pedal. Each key fob has a transponder. When the key fob is hold in front of Kazashi antenna, the BCM sends a transponder recognition order to the key fob throw the kazashi antenna. BCM performs a transponder authentication using 125 khz transceiver. The key fob sends the authentication result to the BCM. The central unit sends the start order to the engine control unit. The engine start function is allowed using any key fob type. 2. When Hand free functions are enabled The user does not need to hold the key fob in front of Kazashi antenna. The key fob should only be inside the vehicle. When the START button is pressed, the BCM sends a recognize order at 125 khz link via internal ferrite coil antennas. Receiving this order, the key fob sends authentication at MHz or 315 MHz (depending of key fob frequency type). The engine start function is allowed using any key fob type. 4 Technical description 4.1 Block Diagram Page 7 / 10

8 4.2 RF Parameters Following the RF receiver parameters: Page 8 / 10

9 US EU JP Units Frequency 433,92 433, MHz Frequency tolerance untrimmed Temperature range -40 C +85 C Data rate Modulation Conducted sensitivity (typ./min.) MER 10% +/- 90 ppm kbps -106 / / / -103 dbm Operating Temperature -40 / / / +85 C Storage Temperature -40 / / / +85 C Nominal Supply Voltage V Run On supply current typ. Single Conversion Mode Run On supply current max. Single Conversion Mode 9,6 ±10% 10,5 10,5 10,5 ma ma Sleep mode current typ µa Sleep mode current max µa FSK LF parameters Below the technical parameters of the BCM LF transmitter: Carrier frequency: 125 khz Frequency shift: +/- 0.3 % Number of channels: 1 Modulation type: Amplitude Shift Keying (ASK) Data rate: 3900 bit/s Field strength: < 10m Supply voltage: 12V lead acid vehicle battery DC/DC converter range: 9V to 40V Voltage supply range: 9V up to 16V 4.4 Typical RF & LF usage pattern 5 Variants Page 9 / 10

10 Product version Renault FULL Renault HFE FULL CONTINENTAL part number S S Pictures END OF DOCUMENT Page 10 / 10