Water channel flow velocity and flow rate measuring method, device and system

Abstract

The embodiment of the invention discloses a water channel flow velocity and flow rate measuring method, device and system. The system comprises an unmanned aerial vehicle, a processor which carries out data transmission, and a radar chronograph. The processor automatically plans a flight course of the unmanned aerial vehicle according to position information of each measuring point, measuring duration and a preset flying height so that the radar chronograph installed on the unmanned aerial vehicle can measure the flow velocity of each measuring point of a water channel to be tested during a flight process according to the flight course, and measurement data is sent to the processor through the unmanned aerial vehicle. The processor calculates and acquires the flow rate of the water channel to be tested according to the measurement data of the radar chronograph, the cross-section information of the water channel to be tested, water level data information, each preset flow measurement parameter value, and the position information of each measuring point. In the invention, water channel flow measurement operation can be remotely performed, a potential safety hazard of water channel flow velocity and flow rate measurement is eliminated, the personal safety of hydrological test personnel is ensured, and the efficiency and the accuracy of the water channel flow velocity and flow rate measurement are increased, which is good for improving hydrologic monitoring quality.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of hydrological monitoring, in particular to a method, device and system for measuring flow velocity and flow rate of a water channel. Background technique [0002] The flow information data of rivers or waterways is the basic data for rational development and utilization of water resources and flood control and drought relief work, so accurate and rapid flow measurement is an important part of hydrological work. [0003] In recent years, with the construction of the automatic measurement and reporting system, the test items such as water level, precipitation, evaporation, and water temperature have gradually been automated, but the measurement of water flow velocity still requires manual close-range measurement. Testers take small boats and use flow measuring equipment, such as current meters, flow meters, buoys, water meters, water level gauges, etc. to measure the river flow velo...

AI Technical Summary

Problems solved by technology

[0004] The traditional manual short-distance measurement method has a large error in the final measurement result due to the instability of the ship's position and the position error of the measurement point. It also requires a certain amount of manpower, material resources and time investment, and the measurement efficiency is not high. In addition, manual short-distance measurement is extremely dangerous, especially in waters with turbulent water flow, and there are great potential safety hazards

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