sample_fmea

Overview

Failure Mode	Guideword	ASIL	Interface
SampleFailureMode		B	safety_software_seooc_example.SampleLibraryAPI.GetNumber
SampleFailureMode2		D	safety_software_seooc_example.SampleLibraryAPI.GetNumber

Failure Modes

SampleLibrary.SampleFailureMode

ASIL B

Interface

safety_software_seooc_example.SampleLibraryAPI.GetNumber

Failure Effect

The world as we know it will end

Description

SampleFailureMode takes over the world

Root Cause Analysis

Control Measures

JustBadLuck ASIL B

Sometimes, the dark side wins. We shall be prepared for that.

NoMoreCookies ASIL B

We shall only order family size cookie jars

NoMoreCoffee ASIL B

We shall keep a coffee reserve for emergencies

SampleLibrary.SampleFailureMode2

ASIL D

Interface

safety_software_seooc_example.SampleLibraryAPI.GetNumber

Failure Effect

Downstream consumers time out

Description

SampleFailureMode2 responds too late

Root Cause Analysis

Control Measures

WatchdogTimer ASIL D

A watchdog shall detect overruns and force a safe state

DeadlineMonitor ASIL D

Per-request deadline monitoring shall flag late responses

Control Measures

Control Measure	ASIL	Description
JustBadLuck	B	Sometimes, the dark side wins. We shall be prepared for that.
NoMoreCookies	B	We shall only order family size cookie jars
NoMoreCoffee	B	We shall keep a coffee reserve for emergencies
WatchdogTimer	D	A watchdog shall detect overruns and force a safe state
DeadlineMonitor	D	Per-request deadline monitoring shall flag late responses