Early-warning wireless telemeter for harsh-environment bearings

被引：25

作者：

Kovacs, Andrew ^{[1
]}

Peroulis, Dirnitrios ^{[1
]}

Sadeghi, Farshid ^{[2
]}

机构：

[1] Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47905 USA

[2] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47905 USA

来源：

2007 IEEE SENSORS, VOLS 1-3 | 2007年

关键词：

D O I：

10.1109/ICSENS.2007.4388559

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

We demonstrate an early-warning wireless and high-temperature telemeter that continuously monitors the temperature of a roller bearing during operation. The telemeter detects imminent temperature-induced failure of the bearing four minutes before conventional thermocouple sensors respond to conditional changes, leaving ample time for appropriate actions to avoid complete failure. The telemeter includes a commercially available temperature-sensitive capacitor that operates up to 220 degrees C. In addition, the telemeter's natural frequency changes with capacitance, which in turn is dependant on temperature. Information transmission between the bearing and a monitoring station is accomplished with a matched interrogator driven by a sinusoidal signal at 2.27MHz. The telemeter's natural frequency shifts by about 0.65kHz/degrees C, which is measured as a change in voltage on the interrogator inductor.

引用

页码：946 / 949

页数：4