کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
566106 1452144 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Decentralized fault detection and isolation in wireless structural health monitoring systems using analytical redundancy
ترجمه فارسی عنوان
تشخیص و انزوای خطای تقسیم شده در سیستم های مانیتورینگ مراقبت های بهداشتی بی سیم با استفاده از انفصال تحلیلی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزار
چکیده انگلیسی


• Design and prototype implementation of a fault-tolerant SHM system.
• Various sensor faults can be detected autonomously.
• Analytical redundancy for detecting and isolating sensor faults in real time.
• Fully decentralized approach, as opposed to traditional strategies.
• Laboratory experiments for validating the prototype SHM system.

One of the most critical issues when deploying wireless sensor networks for long-term structural health monitoring (SHM) is the correct and reliable operation of sensors. Sensor faults may reduce the quality of monitoring and, if remaining undetected, might cause significant economic loss due to inaccurate or missing sensor data required for structural assessment and life-cycle management of the monitored structure. This paper presents a fully decentralized approach towards autonomous sensor fault detection and isolation in wireless SHM systems. Instead of physically installing multiple redundant sensors in the monitored structure (“physical redundancy”), which would involve substantial penalties in cost and maintainability, the information inherent in the SHM system is used for fault detection and isolation (“analytical redundancy”). Unlike traditional centralized approaches, the analytical redundancy approach is implemented distributively: Partial models of the wireless SHM system, implemented in terms of artificial neural networks in an object-oriented fashion, are embedded into the wireless sensor nodes deployed for monitoring. In this paper, the design and the prototype implementation of a wireless SHM system capable of autonomously detecting and isolating various types of sensor faults are shown. In laboratory experiments, the prototype SHM system is validated by injecting faults into the wireless sensor nodes while being deployed on a test structure. The paper concludes with a discussion of the results and an outlook on possible future research directions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Engineering Software - Volume 73, July 2014, Pages 1–10
نویسندگان
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