Redundancy for safety-compliant automotive & other devices


출처: http://www.edn.com/Home/PrintView?contentItemId=4429463

Redundancy를 다음과 같이 분류해보자

  • HW
    • Lockstep(그림1)
    • Delayed Lockstep(그림2)
    • Asymmetric Redundancy
    • Triple voting
  • SW
    • Software diversified redundancy(one hardware channel) (그림3)
    • Reciprocal comparison by software in separate processing units(그림4)
    • Peripherals Replication
  • Information redundancy
    • Parity bit
    • Checksums
    • Error correcting codes
  • Time redundancy
    • Time redundancy over single hardware channel
    • Time redundancy over parallel hardware channel

 

그림1 dual core lockstep

그림2

그림3

그림4

 

 

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s