Detection methods

  Hazards can be detected by checking the system compliance with the operational rules.

  Hazard detection is based on two types of resilience add-ons:

• Component-level add-ons include sensors and indicators about particular components
• System-level add-ons are special units added to detect exceptional situations and events.

The detection add-ons are resilience add-ons intended to enable hazard detection.

Component-level detectors

• Unit component faults
• Component fault detection

Component-level detectors are based on sensors and indicators

System-level detectors

Detecting exceptional situations ...

• Inter-unit mismatch
• Human-machine mismatch

System-level detectors are special units added to detect exceptional scenarios, situations and events.

  General requirements

• Specifications: make sure that specification documents include specifications of all the situation, and of their expected combinations, comprising the design scope.
• Testability: design probes to bypass the sensors and to fake measurements used for the testing
• Mode verification: test the exceptional situations of the primary and control modes

Related topic

Updated on 11 Nov 2016.