Application of Feature Recognition to Hydrostatic Leveling Systems

Epin, V.; Tsvetkov, R. V.; Shestakov, A.

doi:10.1007/s11018-016-0980-7

Cited by 8 publications

(2 citation statements)

References 2 publications

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“…The liquid level in the HLS 1 and HLS 2 sensors was determined during the experiment using IP cameras with an accuracy of the order of 0.1 mm. The image recognition procedure is described in detail in our previous work 25 …”

Section: Laboratory Experimentsmentioning

confidence: 99%

Temperature error in a hydrostatic leveling system and its reduction

Tsvetkov

Lekomtsev

Yepin

2020

Struct Control Health Monit

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Section: Laboratory Experimentsmentioning

confidence: 99%

Temperature error in a hydrostatic leveling system and its reduction

Tsvetkov

Lekomtsev

Yepin

2020

Struct Control Health Monit

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“…Hydrostatic Levelling System (HLS) 11 is already widely used in the field of settlement measurement such as monitoring of building foundation, 12 deformation monitoring of subway tunnels, 13 height measurement dam, 14 and high precision alignment of particle accelerator. 15 However, the traditional hydrostatic levelling system, developed according to the law of connected vessels, cannot completely overcome the inaccuracies caused by the curvature of earth, tide, evaporation of transmission liquid, et al 11,16 Additionally, the traditional hydrostatic levelling system needs to increase the size of sensor to meet the wide range measuring requirement for substructure settlement measurement of the highspeed railways among mountainous areas, which makes it inapplicable for the measurement of internal settlement of substructures. Su and Zhang 17 developed a new hydrostatic levelling system based on the principle that pressures of any two points at different elevations in incompressible static liquid are different.…”

Section: Introductionmentioning

confidence: 99%

A new automatic measurement system for high-speed railway substructure settlement based on hydrostatic pressure difference levelling

Qian

Shen

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part F:

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Exact settlement measurement of substructures plays an important role in their status detection throughout all-life-cycle of high-speed railway. A Hydrostatic Pressure Difference Levelling system (HPDL) is developed based on the mechanism that pressures of any two points at different elevations in incompressible static liquid are different. The approach accounts for a hyperbolic variation in the density of the pressure transmission liquid with temperature, variation in the earth’s gravitational field and the elevation at the measurement point. High accuracy capacitive differential pressure transmitters are adopted owing to their high sensitivity, temperature-insensitive, low energy consumption, and sensing stability. The HPDL results are verified with settlement values measured by the precise level. It was demonstrated that the HPDL results correlate well with the precise level and can be considered as an effective method to measure the settlement of high-speed railway substructures.

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