Nowadays during schedule-based repair of MDRS in the depot conditions the pantograph parameters are often analyzed visually, by manual methods. At that an ordinary stop watch is used to measure the time of lifting and lowering of the pantographs, and a dial dynamometer is used to control static characteristic of pantograph pressing. More modern devices and systems are present primarily as single experimental samples.
Smart sensors equipped with microprocessors and wireless communication channels have become very popular recently. Modern smart sensors in comparison with traditional measuring devices ensure the following:
- significant decrease in information distortion owing to digital signal transmission through communication channels;
- increase of reliability owing to integral functions of self-diagnostics;
- possibility of independent analysis of the measurement results through the algorithms for digital processing of the signals;
- possibility of implementation of different algorithms for control of external devices, etc.
At the same time the use of smart sensors ensures significant reduction of costs owing to decrease in the cost of installation and maintenance, reduction of losses associated with minimizing of wired connections, decrease in human factor influence, etc.
The paper presents the results of creation and practical implementation of smart sensors system for automatic condition diagnostics of pantographs, which forms part of the COMPACS®-EXPRESS-TR3 (comprehensive system of smart sensors for electric multiple unit sections diagnostics) designed for diagnosing of wheel motor units, brake equipment, pantograph, electrical control circuits, power and auxiliary circuits, insulation of electric unit circuits.
Kostyukov V.N., Kostyukov Al.V., Starikov V.A. Condition monitoring of pantographs of motor driven rolling stock (MDRS) by the system of smart sensors // Sensors and Systems. - 2007. - №10. - p. 33-38
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