Examination of Coil Structure to Reduce Water Influence on Eddy-Current Rail Displacement Sensors
Eddy-current rail displacement sensors are mounted on track inspection vehicles for rail inspection on railroads and can measure rail displacement in a non-contact manner. Currently, there is a problem that if a high dielectric constant such as water is deposited near the sensor, the capacitance bet...
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| Veröffentlicht in: | Journal of the Japan Society of Applied Electromagnetics and Mechanics 2024, Vol.32(1), pp.107-112 |
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| container_title | Journal of the Japan Society of Applied Electromagnetics and Mechanics |
| container_volume | 32 |
| creator | FUTATSUGI, Yuki OMORI, Yuya SATO, Mitsuhide MIZUNO, Tsutomu ENOKI, Shigemi MATSUURA, Fumiaki |
| description | Eddy-current rail displacement sensors are mounted on track inspection vehicles for rail inspection on railroads and can measure rail displacement in a non-contact manner. Currently, there is a problem that if a high dielectric constant such as water is deposited near the sensor, the capacitance between the coil and the rail changes, affecting rail displacement detection. Therefore, we compared the characteristics of a 25-turns coil used in existing sensors and a 3-turns coil with the same Quality factor but fewer turns, and studied a coil structure that is less susceptible to the effects of water. |
| doi_str_mv | 10.14243/jsaem.32.107 |
| format | Article |
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Currently, there is a problem that if a high dielectric constant such as water is deposited near the sensor, the capacitance between the coil and the rail changes, affecting rail displacement detection. 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| ispartof | Journal of the Japan Society of Applied Electromagnetics and Mechanics, 2024, Vol.32(1), pp.107-112 |
| issn | 0919-4452 2187-9257 |
| language | eng |
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| subjects | coil impedance output voltage quality factor eddy current rail displacement water influence |
| title | Examination of Coil Structure to Reduce Water Influence on Eddy-Current Rail Displacement Sensors |
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