<title>Model for IR sensor performance evaluation: applications and results</title>

Smart bearings incorporating self-powered sensors and wireless data communications with intelligence in monitoring bearing conditions can help to detect early faults in aero-engine bearings. This paper presents the challenges in design and development of a sensing system with compact and low-power consumption sensors and the procedures for sensor performance evaluation under the requirements of aerospace standard. Industrial standard DO160 testing is necessary for preliminary testing of the smart sensing system prior to being installed in aero-engine, thus a laboratory test procedure has been developed for sensor performance evaluation for the smart aero-engine bearings in this project. As a case study, this paper presents the details and results of the accelerometer evaluation following the requirements in DO160.

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Performance Comparison of Typical Built-In UHF Sensors Used for GIS PD Detection

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.672-674.1143 ◽

2014 ◽

Vol 672-674 ◽

pp. 1143-1150

Author(s):

Yong Yong Jia ◽

Jing Gang Yang ◽

Lin Rong ◽

Feng Bo Tao

Keyword(s):

Performance Evaluation ◽

Impedance Matching ◽

Partial Discharge ◽

Performance Comparison ◽

Detection Sensitivity ◽

Simulation Tools ◽

Sensor Performance ◽

Type Selection ◽

Key Factor ◽

Two Parameters

The UHF method is one of the most important partial discharge (PD) detection means for GIS, while sensor technique is the key factor of the UHF method. In comparison with external sensors, built-in sensors can achieve higher sensitivity. In this paper, two parameters were quoted to evaluate the performance of the sensor, which are He and S11. He refers to the PD detection sensitivity of sensor; S11 refers to the impedance matching property of the sensor. The paper firstly designed a simulation model of sensor performance evaluation, and then studied the performance differences of four typically used or researched built-in UHF sensors (i.e., disc-type, dipole-type, spiral-type and logarithmic-type) by simulation tools of CST. The conclusions of the paper can provide a reference for performance evaluation and type selection of UHF built-in sensor. Keywords: Gas Insulated Switchgear (GIS), Partial Discharge (PD), UHF, Sensor, Sensitivity

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