Results 261 to 270 of about 153,439 (296)
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Reconstruction of Sensor Faults
2011This chapter will focus specifically on sensor faults. Different formulations will be considered in which the measured output signals are filtered to yield ‘fictitious systems’ in which sensor faults appear as ‘actuator faults’. Consequently, the actuator fault reconstruction ideas from the previous chapters can be applied to the fictitious system to ...
Halim Alwi +2 more
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A Distributed Algorithm for Sensor Fault Detection
2018 IEEE 14th International Conference on Automation Science and Engineering (CASE), 2018In intelligent buildings, faults occurring to sensors are common due to external interference or the limited service life of sensors. In this paper, we propose a distributed fault detection algorithm based on energy balance. With the increase of building scale, the algorithm has higher efficiency and better adaptability than the commonly used ...
Ziyou Zhang, Qianchuan Zhao, Wen Yang
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Fault tolerance analysis of sensor systems
Proceedings of the 38th IEEE Conference on Decision and Control (Cat. No.99CH36304), 2003This paper deals with the analysis of fault tolerance properties of sensor systems. Observability, individual observability and pseudo-observability indexes are used to build minimal and pseudo-minimal sensor sets considering both global and partial state estimation.
Staroswiecki, Marcel +2 more
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A Method of Abrupt Sensor Fault Diagnosis
Sixth International Conference on Intelligent Systems Design and Applications, 2006The possible faults of a sensor may be classified as abrupt (sudden) faults and incipient (slowly developing) faults. This paper focuses on the abrupt faults of a sensor. Due to the limited number of scales, a single wavelet amplitude map has not enough scales to describe all details of the signal.
Wenjun Li, Yuanchun Li
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ACM Transactions on Sensor Networks, 2010
Various sensor network measurement studies have reported instances of transient faults in sensor readings. In this work, we seek to answer a simple question: How often are such faults observed in real deployments? We focus on three types of transient faults, caused by faulty sensor readings that appear abnormal.
Abhishek B. Sharma +2 more
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Various sensor network measurement studies have reported instances of transient faults in sensor readings. In this work, we seek to answer a simple question: How often are such faults observed in real deployments? We focus on three types of transient faults, caused by faulty sensor readings that appear abnormal.
Abhishek B. Sharma +2 more
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Fault management in wireless sensor networks
IEEE Wireless Communications, 2007Wireless sensor networks (WSNs) have gradually emerged as one of the key growth areas for pervasive computing in the twenty-first century. Recent advances in WSN technologies have made possible the development of new wireless monitoring and environmental control applications. However, the nature of these applications and harsh environments also created
Mengjie Yu +2 more
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Fault Aware Wireless Sensor Networks
2007 IEEE International Conference on Networking, Sensing and Control, 2007Wireless Sensor Networks (WSNs) collect information about the physical environment aiding to a wide variety of applications ranging from target detection to monitoring of harmful chemical gases. The drive to scale down the system size and cost has resulted in constraints in the quality of components.
Fatima A. Zohra, Rastko R. Selmic
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Sensor Fault Diagnosis in Wind Turbines
2014This chapter addresses the early detection and isolation of sensor faults in a systematic and unified way and illustrates the approach on wind turbine simulation data. Three problems are successively considered: individual signal monitoring, fault detection and isolation (FDI) in redundant sensors, and FDI based on analytical redundancy.
Galvez Carrillo, Manuel Ricardo +2 more
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1977
Sensors used in the monitoring of machinery with the object of identifying faults are usually related to the dentification of physical and/or chemical changes. As a consequence, sensors are frequently similar to those employed for control purposes and, indeed, there is a considerable similarity between the two techniques.
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Sensors used in the monitoring of machinery with the object of identifying faults are usually related to the dentification of physical and/or chemical changes. As a consequence, sensors are frequently similar to those employed for control purposes and, indeed, there is a considerable similarity between the two techniques.
openaire +1 more source
Fault Tolerant Regression for Sensor Data
2013Many systems rely on predictive models using sensor data, with sensors being prone to occasional failures. From the operational point of view predictions need to be tolerant to sensor failures such that the loss in accuracy due to temporary missing sensor readings would be minimal.
Indre Zliobaite, Jaakko Hollmén
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