ecall In-vehicle System Definition

Transcription

1 ecall In-vehicle System Definition Suppliers viewpoint Expert meeting on ecall Olten December 2 Lennart Strandberg, Autoliv Expert meeting on ecall Olten December 2 1

2 EG. 2 members Lennart Strandberg, Autoliv Alfred Krappel, Motorola Gianmaria Timossi, Magneti Marelli Olivier Beaujard, Wavecom Darren Stratton, SonyEricsson Stephane Pellerin, Sagem Andreas Kohn, Siemens Expert meeting on ecall Olten December 2 2

3 Triggers & Thresholds Crash Sensing Expert meeting on ecall Olten December 2 3

4 Severe crash Crash Sensing At this time, crash can be recognised Non severe crash Expert meeting on ecall Olten December 2 4

5 Remaining space = airbag thickness Crash Sensing Occupant moves to dashboard Airbag must be in place Time to inflate Airbag Decision must be taken Expert meeting on ecall Olten December 2 5

6 Crash Sensing Severe crash At this time, crash can be Algorithm recognised must decide to inflate restrain devices in time Non severe crash Crash sensing is differencing events at an early stage Expert meeting on ecall Olten December 2 6

7 Crash sensing concept Expert meeting on ecall Olten December 2 7

8 Sensing Concept issue The higher the impact speed The higher the protection need The higher the loss of speed Loss of speed Loss of speed reaches fire decision threshold Inflation Loss of speed does not reach fire decision threshold Mesure Acceleration in car Integration : DeltaV Calculate Threshold DeltaV > Threshold Inflation Expert meeting on ecall Olten December 2 8

9 Sensing Concept Example Loss of speed Loss of speed reaches Detection is achieved here fire decision threshold Detection is required here Mesure Acceleration in car Integration : DeltaV Calculate Threshold DeltaV > Threshold Inflation Expert meeting on ecall Olten December 2 9

10 Sensing Concept Example Loss of speed Threshold design is optimized Mesure Acceleration in car Integration : DeltaV Calculate Threshold DeltaV > Threshold Inflation Expert meeting on ecall Olten December 2 10

11 Sensing Concept A concept consist of : Car structure behavior Sensors Technology, characteristics Sensor locations where? Location characteristics Data processing Filtering, Classification criteria, accuracy and frequency of calculations Decision logic At least two sensor shall confirm a crash before a inflation is allowed. Expert meeting on ecall Olten December 2 11

12 Crash Data availability Crash data is available for the IVS 100 ms after deployment CAN Bus (LIN ) Crash Status -Front, side, rear, roll -Driver/passenger belted -Airbags deployed (Side, Driver..) -Crash severity Airbag Control Unit Hardwired Interface IVS ecall Expert meeting on ecall Olten December 2 12

13 IVS Block Diagram Embedded Device IVS Nomadic Device IVS GSM Antenna CAN or airbag sensors connectivity Manual trigger Bluetooth Antenna CAN or airbag sensors connectivity Manual trigger +BAT Mic Speaker GPS Wireless Module (GSM) +BAT Mic Speaker Wireless Module (Bluetooth) Smart Phone -Bluetooth -GPS Expert meeting on ecall Olten December 2 13

14 Embedded Pros. Car standard compliant and robust design will secure function in most accident situations Allows certificating of complete IVS, including GSM Embedded device allow other car related telematic like safety and security, and remote control and diagnostic Cons. To be viable, the IVS need to have a useful life of years Expert meeting on ecall Olten December 2 14

15 Nomadic Pros. Use of existing customer's equipment (if compatible with onboard IVS node and application) Cons. Requires that the driver brings his phone, risk for incompatible device Certificating needed for each new mobile phone on the market that should work in the ecall system Expert meeting on ecall Olten December 2 15

16 SIM no SIM issues Clear Identification of the calling device through the SIM SIM makes is possible to call-back to the car if the connection is interrupted All Operators does not allow 112 calls without SIM SIM does ad cost to the in ecall IVS Expert meeting on ecall Olten December 2 16

17 What requirement should be (not be) specified as mandatory for a ecall IVS? Expert meeting on ecall Olten December 2 17

18 Specified Characteristics that are related to ecall functional performance shall be specified Positioning accuracy Voice connectivity (hands free) Manual and automatic trigger Data connectivity MSD Environmental requirements (temperature, humidity.) Mechanical requirements (vibration, shock, water tightness..) Time T0 (Crash Signal Distribution Time), T1 (ecall Initiation Time) Expert meeting on ecall Olten December 2 18

19 Not Specified Characteristics that are related to implementation and vehicle architecture shall not be standardized, this will be handled by the industry and will differs from one car manufacturer to another ACU physical interface (CAN, LIN ) Manual trigger interface Audio interface.. Expert meeting on ecall Olten December 2 19

20 Thank you for your attention! Expert meeting on ecall Olten December 2 20