Balloon-carried type water flow imaging and speed measurement system facing torrential flood emergency monitoring

Abstract

The invention discloses a balloon-carried type water flow imaging and speed measurement system facing torrential flood emergency monitoring, and belongs to the technical field of non-contact open channel flow measurement. The system comprises an aerial photography balloon, a servo self-stabilization photoelectric platform, a mooring cable and a ground measurement and control part, wherein the aerial photography balloon consists of a balloon body, a connection net, a connection ring and a hoisting platform; a carrying photoelectric platform is suspended in low altitude; the servo self-stabilization photoelectric platform consists of a six-wave-band spectral imager, a light emitting diode (LED) light compensation lamp, a triaxial holder and a 12V direct current (12VDC) converter and is used for continuously and stably imaging a water surface at a similarly perpendicular visual angle; the mooring cable consists of a mooring rope, a power line and an Ethernet line and is used for fixing the aerial photography balloon and transmitting image data output by the spectral imager; and the ground measurement and control unit consists of a 48V self-power-supply device, a 19VDC converter, a PoE combiner and a mobile working station and is used for supplying power to the system and processing monitored data. The balloon-carried type water flow imaging and speed measurement system can finish site arrangement safely and quickly with low cost, and sudden torrential flood emergency monitoring can be realized.

Description

Technical field [0001] The invention relates to a non-contact open channel water flow monitoring system, in particular to a ball-borne water flow imaging speed measurement system for emergency monitoring of mountain floods. Background technique [0002] With the rapid economic and social development, the impact of global climate change has increased, extreme weather events such as typhoons and rainstorms have occurred frequently, and the water security situation has become increasingly severe. Among them, mountain torrents are sudden ups and downs of surface runoff caused by rainfall in small watersheds or catchment areas in hilly areas. Its confluence time is short, water volume is concentrated, and its destructive power is large. It has repeatedly caused serious economic losses and casualties. The lives and property of the people pose a great threat. The scope of the impact of mountain torrents is not limited to mountainous areas, but may also spread disasters to piedmont plai...

AI Technical Summary

Problems solved by technology

In this case, the large-scale imaging area and oblique shooting angle will inevitably cause image distortion

Especially when the viewing angle is small, even if the image orthorectification algorithm is used, it is difficult to compensate for the loss of image far-field resolution, which greatly affects the accuracy of measurement

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