Method and device for automatically measuring water-level variation

Abstract

The invention relates to a method and a measuring device for automatically measuring water-level variation, which utilize the principles of communicating vessels and use the water level in a piezometer tube to substitute for the water level of a position to be measured; two metal wires are arranged in the piezometer tube at equal interval, according to the physical conductive properties of medium, a relation curve of the water level and the conductive value can be obtained; and by measuring the conductive value of the piezometer tube and combining the obtained relation of the water level and the conductive value, the height of the water level can be figured out. The data of the conductive value is measured by a high-precision conductive detection system, the conductive data is automatically acquired via a data acquisition system and is transferred to a microcomputer, by measuring the conductive value changing with time to monitor the variation of the water level data and according to the method and the device provided by the invention, the water level data can be conveniently and accurately obtained, and the variation condition of the water level can be real-timely monitored.

Description

technical field [0001] The invention relates to a method and a measuring device for automatically measuring water level changes, and belongs to the field of automatic measuring methods and measuring instruments for hydrogeological parameters. Background technique [0002] The water level reflects the height of the head of the water body, and plays an important role in water-related subjects such as groundwater dynamics and fluid mechanics. Therefore, the measurement and monitoring of water level has important theoretical and practical significance. [0003] In the current research and application, the measurement of the water level generally adopts the traditional pressure measuring tube, that is, a hollow tube is set at the measurement position, and the height of the water level is obtained by reading the height of the liquid level. For places with high precision requirements, The water pressure sensor is used to measure the water pressure, and the water level is calculate...

AI Technical Summary

Problems solved by technology

For traditional piezometric tubes, due to the need to manually read the water level data, reading errors inevitably occur, and the frequency of manual readings is low, it is difficult to achieve high-frequency, long-term water level monitoring and measurement; for the use of water pressure sensors In the case of measuring water level, due to the high cost and the close relationship between the density of the water body to be measured and the detected water level, it is difficult to be widely used

When the water level changes, the sensor needs a certain reaction time, so the measured data has a certain delay and cannot represent real-time water level data

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