Design of Networked Embedded Systems: An Approach for Safety and Security

This paper presents a safety and security-based approach to networked embedded system design that offers reusable design patterns for applications dedicated to various domains. After introducing dependability requirements for embedded system applications, it deals with industrial, sensor-based applications development support aiming at distributed components interconnected by wired Internet compatible intranets and wireless sensor networks. The paper discusses a safety and security-driven approach to embedded system design for an industrial class of Internet-based applications. It focuses on an integrated networking that stems from the IEEE 1451.1 smart transducer interface standard, which is an object-based networking model supporting client-server and publish-subscribe communication patterns in group messaging, and from the IP multicast communication, all together mediating safe and secure access to smart sensors through Internet and ZigBee. The case study demonstrates how clients can access groups of wireless smart pressure and temperature sensors and valves through Internet effectively using developed system architecture while respecting prescribed requirements for application dependent safety and security.