An architecture for intelligent health assessment enabled IEEE 1451 compliant smart sensors

As systems become increasingly complex and costly, potential failure mechanisms and indicators are numerous and difficult to identify, while the cost of loss is very expensive - human lives, replacement units, and impacts to national security. In order to ensure the safety and long-term reliability of vehicles, structures, and devices attention must be directed toward the assessment and management of system health. System health is the key component that links data, information, and knowledge to action. Integrated Systems Health Management (ISHM) doctrine calls for comprehensive real-time health assessment and management of systems where the distillation of raw data into information takes place within sensors and actuators. This thesis develops novel field programmable health assessment capability for sensors and actuators in ISHM. Health assessment and feature extraction algorithms are implemented on a sensor or actuator through the Embedded Routine Manager (ERM) API. Algorithms are described using Health Electronic Datasheets (HEDS) to provide more flexible run-time operation. Interfacing is accomplished through IEEE Standard 1451 for Smart Sensors and Actuators, connecting ISHM with the instrumentation network of the future. These key elements are validated using exemplar algorithms to detect noise, spike, and flat-line events onboard the ISHM enabled Methane Thruster Testbed Project (MTTP) at NASA Stennis Space Center in Mississippi

Intelligent Sensors and Components for On-Board ISHM

A viewgraph presentation on the development of intelligent sensors and components for on-board Integrated Systems Health Health Management (ISHM) is shown. The topics include: 1) Motivation; 2) Integrated Systems Health Management (ISHM); 3) Intelligent Components; 4) IEEE 1451; 5)Intelligent Sensors; 6) Application; and 7) Future Direction

Intelligent Sensors and Components for On-Board ISHM Read More: http://arc.aiaa.org/doi/abs/10.2514/6.2006-4585

This paper addresses intelligent sensors and components as elements of Systems-of-Systems (SoS) organized as an architecture embodying a hierarchical network of distributed intelligent elements. The focus is on intelligent sensors and components and their functional contributions to implementation of Integrated Systems Health Management (ISHM) an important application that can benefit from intelligent elements, followed by definitions of intelligent sensors and components, their functional attributes, physical and virtual realizations, and integration to contribute to the overall SoS ISHM capability. Prototype Intelligent Sensors are described along with their integration into an ISHM system for a Rocket Engine Test Stand at NASA Stennis Space Ceneter