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

A ball-mounted, water-flow technology, applied in the direction of measuring devices, fluid velocity measurement, velocity/acceleration/shock measurement, etc., can solve problems such as image distortion, difficult to make up for the loss of image far-field resolution, and affect the accuracy of measurement. Achieve the effects of stable field of view, strong invulnerability, and error reduction

Active Publication Date: 2013-01-16
HOHAI UNIV
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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 i

Method used

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

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Embodiment Construction

[0025] A ball-mounted water flow imaging velocity measurement system for mountain torrent emergency monitoring provided by the present invention will be further described below in conjunction with 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, mooring 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-stabilizing optoelectronic platform consists of a six-band spectral imager, LED fill light, three-axis gimbal and 12VDC converter, and is used for stable imaging under the tethered balloon maneuvering platform.

[0029] The six-band spectral imager is the core of the servo self-stabilized optoelec...

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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-mounted water flow imaging velocity measurement system for mountain torrent emergency monitoring. Background technique [0002] With the rapid economic and social development and the increasing impact of global climate change, extreme weather events such as typhoons and heavy rains occur frequently, and the water security situation is becoming increasingly severe. Among them, mountain torrents are sudden surges and falls of surface runoff caused by rainfall in small watersheds or catchment areas in hilly areas. Its confluence time is short, the water volume is concentrated, and its destructive power is large. It has repeatedly caused serious economic losses and casualties. People's lives and property pose a great threat. The range affected by flash floods is not limited to mountainous areas, and may also spread disasters to the piedmont plains...

Claims

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Application Information

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IPC IPC(8): G01P5/00G01C11/02
Inventor 张振徐立中王鑫
Owner HOHAI UNIV
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