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

A ball-borne, water-flow technology, applied in measurement devices, fluid velocity measurement, velocity/acceleration/impact measurement, etc., can solve problems such as difficulty in compensating for image far-field resolution loss, image distortion, and affecting measurement accuracy, etc. Achieve the effect of strong invulnerability, stable field of view, and error reduction

Active Publication Date: 2014-09-10
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0025] The ball-mounted water flow imaging speed measurement system for flash flood emergency monitoring provided by the present invention will be further described below with reference to the accompanying drawings.

[0026] The system structure block diagram of the present invention is as figure 1 As shown, it includes four parts: aerial photography balloon, servo self-stabilizing photoelectric platform, tethered cable and ground measurement and control unit.

[0027] The aerial photography balloon is composed of a sphere, a connecting net, a connecting ring and a hoisting platform, and is used to carry a servo self-stabilizing photoelectric platform.

[0028] The servo self-stabilized photoelectric platform is composed of a six-band spectral imager, LED fill light, three-axis pan / tilt and 12VDC converter, and is used for stable imaging under the tethered balloon mobile platform.

[0029] The six-band spectral imager is the core of the servo self-stabilizing optoelectronic platform. I...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/00G01C11/02
Inventor 张振徐立中王鑫
Owner HOHAI UNIV
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