Real-Time UML Workshop for Embedded Systems, 2nd Edition

Chapter 13

Dependability Architecture

Answers

Abstract

This chapter presents solutions to the exercises posed in Chapter 6, focusing on the three important aspects of dependability – safety, reliability, and security. This includes solutions for both the Roadrunner Traffic Light Control System and the Coyote Unmanned Aerial Vehicle.

Keywords

Dependability; safety; reliability; security; fault; error; risk; hazard; severity; safety architecture; hazard analysis; fault tree analysis (FTA); failure mode and effects analysis (FMEA); solution

13.1. Answer 6.1: Safety Architecture

For the Roadrunner Traffic Light Control System, the exercise involves doing the following (taken from Problem 6.1):

• Take the Roadrunner subsystem architecture previously completed ...