Abstract
In order to ensure the demand of the market for competitive rail transport services, the structure of automatic safety control for bulk cargo is proposed on the basis of the radar sensor and Wi-Fi technology, which allows to avoid the false alert signal caused by changes in the level of liquid due to various deviations of the railway track from the horizontal plane and to fix leakage of the liquid from damaged tank. The issues of increasing the reliability of the proposed control system are considered.
Highlights
In [12] an ultrasonic level gauge is presented, which is used to measure the level of liquid substances in railway tanks
When finding the distance to the surface of the liquid, the radar computational system does not take into account the full path of radio signal passage from its moment of radiation to the moment of its reception, but only half of this path, the unregarded thickness of the liquid layer, which is located above the equivalent surface of reflection, is determined by the following way: h = Re∆t∙c / 2, where с is the speed of light
The results of the calculation showed that for the selected fluids, the methodical error does not exceed 7.1 mm, which is higher than the accuracy of high-precision radar for measuring the level of dielectric liquids, which is equal to ± 1 mm
Summary
In [12] an ultrasonic level gauge is presented, which is used to measure the level of liquid substances in railway tanks. When these sensors are used, information about the damage to railway systems or the leakage of liquid cargo from tanks can be obtained early and thereby train traffic safety is increased.
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