Hydraulic leveling measurement system and measurement method thereof

Abstract

The invention provides a hydraulic leveling measurement system which comprises a liquid storage tank containing measurement liquid, a communication pipe connected with a liquid storage tank outlet and measurement units arranged on the communication pipe. A liquid discharging valve is arranged at the tail end of the communication pipe, the measurement units are electrically connected with a data acquisition and analysis computer and are hydraulic sealing tanks, and an absolute pressure sensor is arranged above the hydraulic sealing tanks. The hydraulic leveling measurement system utilizes a wired or wireless sensor network to enable hundreds of or even thousands of measurement units to be connected together and can simultaneously conduct measurement and analysis on all the measurement units, the efficiency is improved by hundreds of times compared with traditional leveling measurement, and time and labor are saved.

Description

technical field [0001] The invention relates to a level measurement system and a measurement method thereof, belonging to the technical field of level measurement instruments. Background technique [0002] Leveling, also known as "geometric leveling", is a method of measuring the height difference between two points on the ground with a level and a leveling rod. Traditional leveling uses a leveling instrument and a leveling rod to measure the height difference between the measuring point and the reference point. Levels are currently used more with automatic leveling levels and precision levels. The automatic leveling level does not require manual leveling in the instrument erection, which improves the measurement speed; the precision level can improve the measurement accuracy with the indium steel ruler. The recently developed digital level and bar code level can realize automatic leveling and automatic high-precision measurement. [0003] The main disadvantage of traditi...

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Problems solved by technology

[0003] The main disadvantage of traditional leveling is that it uses a single instrument for measurement. Every time a leveling point is measured, it needs to be moved again, the leveling instrument and the leveling rod are erected, and the measurement speed is slow.

Especially in the case of many measurement points, the measurement work is very labor-intensive and the measurement speed is very slow

[0004] Static leveling is equipped with a static level at each measuring point, which has the advantage of fast measurement speed, but due to the limitation of the measurement principle and range, all static levels are required to be basically installed on the same level

If there is a large height difference, it is necessary to increase the dynamic base point to solve it. Installation and debugging are very troublesome. The static level is greatly affected by temperature. The measurement error between day and night or winter and summer is very large, so it is generally only used in tunnels. A place where the ambient temperature does not change much throughout the year

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