Can be ASILB-LIBRARY used with single ASM330LHB sensor?

[KSzurman]

Hello,

we're considering to use ASM330LHB in the SIL2 functional safety application and we would like to use and take credit from ST's ASILB-LIBRARY. However ASILB-LIBRARY use-case as it's documented expects that two redundant senors will be employed. Can be ASILB-LIBRARY used only with single IMU source? 

Thank you for the answer and support

@Denise SANFILIPPO thank you for your awesome article on this topic https://community.st.com/t5/mems-and-sensors/how-to-augment-your-automotive-safety-applications-with-the-imu/ta-p/670346 

[Federica Bossi · Accepted solution]

Hi @KSzurman ,

Welcome to ST Community!

The ST ASIL B solution is made up of an ASIL B software library called ASM330LHBxx_ASILB_library, certified by the third party TÜV, and two identical IMUs (either 2x ASM330LHB or 2x ASM330LHBG1).

The ASIL B software library implements software safety mechanisms which allows the overall solution, which is made up of hardware (two redundant IMUs) + software library, to be ASIL B compliant. 

So ASILB-LIBRARY cannot be used only with single IMU.