Safety: SEooC introduction 02

来源:公众号“汽车安全前瞻研究”
2020-05-25
2025

[Author]

Renhong WENG, AI safety and security investigator


The first article is here. This article will use the detail mmRadar analysis and semiconductor for analysis.


First: Vehicle level requirements

It is the perception system will inherit following vehicle level requirements, we take the architecture of 'CAST safety Analyze for Automated Vehicle Life-killing Accident', for following configuration:



Second: High automated driving functionality requirement

ASIL
ID Functional Safety RequirementFunctional Safety Requirement
Safe StateFTTI
B
FSR_04_01_02_01Velodyne HDL-64E S3 will not mistake surroundings and trigger unexpected disengagement commandsVelodyne HDL-64E S3etc
BFSR_04_01_02_02Installation and wiring of HDL-64E S3 will not mistake surroundings and trigger unexpected disengagement commandsInstallation and wiring of HDL-64E S3 will not mistake surroundings and trigger unexpected disengagement commandsetc
BFSR_04_01_02_03Vertical FOV within HDL-64E S3 will be enough for monitoring surroundings and not trigger unexpected disengagement commandsFOV vertically 26.8degetc
B
FSR_04_01_02_04Digital signal processing and waveform analysis for accuracy, extended distance sensing and intensity data are not well enough for monitoring surroundings and not trigger unexpected disengagement commandsHDL-64E S3etc
BFSR_04_01_02_05HDL-64E S3 shall ensure Laser emitters and receivers are positioned as following photo, and ensure the outer case can ensure IP67, and anti-against dust, rain, snow pollutionHDL-64E S3etc
BFSR_04_01_02_06HDL-64E power supply shall have mechanisms protect itself from unintended interruption, so that the monitoring capability will be continuously openHDL-64E power supply etc
BFSR_04_01_02_07HDL-64E Ethernet shall have mechanisms protect itself from unintended message corruption, so that the monitoring capability will be continuously openHDL-64E Ethernet etc
BFSR_04_01_02_08HDL-64E shall have mechanisms to anti-against wrong calibratioin parameters included in-stream from the sensor or from the included data files leading to performance degradation, incorrect behaviorHDL-64Eetc
BFSR_04_01_02_09HDL-64E shal have mechanisms to choose and protect correct run-time parameters from RS-232 serial portHDL-64Eetc
BFSR_04_01_02_10HDL-64E shall have proper spin rate and configured inside flash memory, RAMHDL-64Eetc
BFSR_04_01_02_11Laser firing sequence and timing shall have mechanisms to determine the exact firing time for each laser so as to properly time-align with the other data sourcesHDL-64Eetc
BFSR_04_01_02_12HDL-64E shall have mechanisms to protect firmware updates from corruptionHDL-64Eetc


Third: microcontroller requirements


Forth: microcontroller architecture


Fifth: analysis in GSN


[Ref]

1.s32r37 radar microcontroller 

www.nxp.com/S32R37

2. HDL-64E datasheet

3. GSN using for SEooC



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