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NASA Technical Reports Server (NTRS) 20120003146: Smart Sensors' Ro...
by NASA Technical Reports Server (NTRS)
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During the last decade, there has been a major effort in
the aerospace industry to reduce the cost per pond of
payload and become competitive in the international
market. Competition from Europe, Japan, and China has
reduced this cost to almost a third from 1990 to 2000.
This cost has leveled in recent years to an average price
of around $12,000/pound of payload. One of NASA's goals
is to promote the development of technologies to reduce
this cost by a factor of 10 or more Exploration of space,
specially manned exploration missions, involves very
complex launch and flight vehicles, associated ground
support systems, and extensive human support during all
phases of the mission. When considering the Space Shuttle
Program, we can see that vehicle and ground support
systems' processing, operation, and maintenance represent
a large percentage of the program cost and time. Reducing
operating, processing and maintenance costs will greatly
reduce the cost of Exploration programs. The Integrated
System Health Management (ISHM) concept is one of the
technologies that will help reduce these operating,
processing and maintenance costs. ISHM is an integrated
health monitoring system applicable to both flight and
ground systems. It automatically and autonomously
acquires information from sensors and actuators and
processes that information using the ISHM-embedded
knowledge. As a result, it establishes the health of the
system based on the acquired information and its prior
knowledge. When this concept is fully implemented, ISHM
systems shall be able to perform failure prediction and
remediation before actual hard failures occurs,
preventing its costly consequences. Data sources,
sensors, and their associated data acquisition systems,
constitute the foundation of the system. A smart sensing
architecture is required to support the acquisition of
reliable, high quality data, required by the ISHM. A
thorough definition of the smart sensor architectures,
their embedded diagnostic agents, and communication
protocols need to be established and standardized to
allow the embedding and exchange of health information
among sensors and ISHM. This workshop is aimed to foster
the exchange of ideas and lessons learned between
government, industry and academia to aid in the
establishment of ISHM (and smart sensors) standards and
guidelines as well as to identify present technology gaps
that will have to be overcome to successfully achieve
this goal.
Date Published: 2016-10-26 13:40:44
Identifier: NASA_NTRS_Archive_20120003146
Item Size: 13254491
Language: english
Media Type: texts
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