GB C-EDR 汽车事件数据记录系统 最新更新.pdf

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1、China Automotive Technology and Research Center Co., Ltd. Chinese Mandatory National Standard GB “Automobile Event Data Recorder system” Informal document GRSG-117-05 (117th GRSG, 8-11 October 2019 Agenda item 19) C-EDR 发展历程 发 展 历 程Framework 2 C-EDR Terms and Definitions Appearance and Identificatio

2、n Manual Annex Technical Requirements Test Methods and Requirements Implementation Type Inspection C-EDR 发展历程 发 展 历 程Content 3 Technical Requirements Impact Event Requirements Data Record Requirements Data Function Requirements Data Retrieval Requirements C-EDR 发展历程 发 展 历 程Content 4 IMPACT EVENT REQ

3、UIREMENTS Trigger Threshold Locking Condition Beginning of Event End of Impact Event C-EDR 5 Content DATA RECORD REQUIREMENTS Relevant data that can be recorded when the vehicle is featured with specific functions or equipped specific devices. C-EDR 6 Content Longitudinal acceleration Lateral accele

4、ration Lateral delta-V Time to Maximum Recorded delta-V， Resultant Yaw Angle Velocity Steering Angle Gear Position Engine Throttle Position Brake Pedal Position Parking System Status Steering Lamp Status Occupant Protection System Warning Status Tire Pressure Monitoring System Warning Status Braking

5、 System Warning Status Drivers seat belt pretensioner Deployment time Drivers front airbag Deployment time （phase I） Drivers front airbag Deployment time （phase II） Front-row passenger seat belt pretensioner Deployment time Front-row passenger s front airbag suppression status Front-row passenger s

6、front airbag Deployment time(phase I) Front-row passenger s front airbag Deployment time（phase II） Front-row passengers side airbag Deployment time YearMonthDayHourMinuteSecond Workin g status and event status Restrain t system Active system Time Level B Data Elem ent B Anti-brake system status AEB

7、status Adaptive Cruise Control system status Cruise Control system status Electronic stability control system status Traction control system status Drivers side airbag Deployment time Drivers side air curtain Deployment time Front-row passenger seat belt Status Tend Pre-event synchronization timing

8、time Maximum Recorded Lateral delta-V Square of Maximum Recorded Resultant delta-V Time to Maximum Recorded delta-V lateral DATA RECORD REQUIREMENTS Front-row passengers side air curtain Deployment time C-EDR 7 Content Storage media and storage frequency requirements Non-volatile storage medium At l

9、east3times of impact event data. DATA RECORD FUNCTION REQUIREMENTS Learning from relevant research, 94% of the accidents will be covered when EDR records 3 events , while only 84% when EDR records 2 events. Depends on different forms or phases, an accident can be recorded as several events. C-EDR 8

10、Content Storage coverage mechanism requirements Unlocked event data should be overwritten by subsequent un-locked event data, in chronological order. Locked event data should not be overwritten by data from subsequent events. For unlocked events, the manufacturer is allowed to set other storage cove

11、rage mechanisms. Power-off storage requirements Data before T0 and after T0 to (15010) ms should be recorded. DATA RECORD FUNCTION REQUIREMENTS C-EDR 1 2 34 Unified data retrieval connector GB/T 34589-2017“Road Vehicles diagnostic connector” Unified data retrieval protocol Unified data retrieval ID

12、0 xFA13, 0 xFA14 and 0 xFA15 Where, 0 xFA13 for the most recent event, 0 xFA14 for the second event from the bottom, 0 xFA15 for the third event from the bottom. Unified data arrangement Use diagnostic service 0 x22“ReadDatabyIdentifier“ in ISO 14229 “Road Vehicles unified diagnostic service to retr

13、ieve EDR data. compatible with CAN bus and k-line. Compatible with functional addressing and physical addressing Compatible with 11-bit and 29-bit CANID Unified data range, accuracy, resolution and data arrangement order DATA RETRIEVAL REQUIREMENTS Content 9 C-EDR Test Methods IMPACT TEST MEASURE DR

14、IVER OPERATION DATA TEST BENCH TEST TEST METHODS Content 10 After the existed mandatory impact test, following two requirements are checked: (1) Requirement conformance of post crash time-series data (EDR delta-V or acceleration data ): the EDR output is compared with the reference accelerometer sen

15、sor data. And there is no delta-V data clipping, or acceleration data outrange (2) Survivability: the EDR system shall completely record all data. After the EDR is triggered, the requirement conformance of pre-crash driver operation data elements are checked. Pedal：certain stroke Steering wheel： cer

16、tain angle Safe belt buckle：locked Lamp：ON Electronic/electric systems recorded by EDR shall be set and kept on Note: the EDR can be triggered in any way, e.g. - impact the vehicle - fix the vehicle on the trolley, and impact the trolley - physically trigger the EDR - input trigger signal to the EDR

17、 The following EDR requirements are checked : EDR trigger performance Event storage times Storage overwrite mechanism Power off storage performance by thrusting the EDR controller using a electromagnetic thruster to physically generating relevant impact waveform. Note: A test box is required to simu

18、late the real vehicle peripheral signals or loads except for the EDR delta-V or acceleration signal during bench test. C-EDR When we developed the C-EDR standard , the following factors were considered: International standards and regulations; Chinese traffic condition; Requirements of Traffic Accid

19、ent Identification Agency and Ministry of Public Security A large number of vehicle manufacturers and component suppliers all over the world have been taken part in this standards development. We would like to share the experience of C-EDR standard development to WP.29 . Summary 11 C-EDR Thank you for your attention!