Measuring weir measuring device

Abstract

The embodiment of the invention provides a measuring weir measuring device. The measuring weir measuring device comprises a stepping motor, a ball screw which is driven by the stepping motor to move up and down, an electrode which is arranged at the second end of the ball screw, a probe which is driven by the ball screw to move up and down, a current sensor which sends out a triggering signal whenthe second end of the probe just makes contact with the liquid surface of liquid in a measuring weir and detects currents, and a processor which forwards the triggering signal to trigger the steppingmotor to stop working, wherein the second end of the electrode is kept in the liquid in the measuring weir, and when the second end of the probe makes contact with the liquid in the measuring weir, the electrode and the probe form a conductive circuit through the liquid in the measuring weir, the distance between the second end of the probe and the water head high point of the measuring weir is calculated according to the step number of the stepping motor, the height of the liquid surface of the liquid in the measuring weir is calculated according to the known second distance and the known first distance, and the seepage flow is calculated according to the height of the liquid surface of the liquid in the measuring weir.

Description

Technical field [0001] The invention relates to the technical field of dam monitoring, in particular to a water measuring weir measuring device. Background technique [0002] After the completion of the reservoir, due to changes in the water level and foundation conditions, the working conditions of the dam, bedrock, dam abutment, bank slope and underground structures will be greatly affected. Especially after the dam is impounded, the hydraulic load is generated on the dam, and under the action of the water level difference between the upstream and downstream, the dam body, the dam foundation and the bypass dam seepage. Therefore, in accordance with the requirements of relevant codes, it is necessary to observe and measure the seepage flow through the dam body, the dam foundation and the seepage flow around the dam on both sides. [0003] Seepage monitoring is the main item of dam safety monitoring, and seepage monitoring is one of the important safety guarantee methods for the s...

AI Technical Summary

Problems solved by technology

[0010] The embodiment of the present invention provides a water measuring weir measuring device to solve the problem in the prior art that the manual observation method has large data errors and cannot perform real-time measurement; and when the water measuring weir automatic measuring device uses a steel string instrument, there are Technical problems that are prone to drift, poor long-term stability, and often require manual correction

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