River flow monitoring device based on very high frequency/ultra high frequency (VHF/UHF) portable radar

A portable radar and flow monitoring technology, applied in measurement devices, liquid/fluid solid measurement, fluid velocity measurement, etc. Simple structure, strong advanced and practical effect

Inactive Publication Date: 2013-06-19
SHANGHAI GUOYUE INFORMATION SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Not only is it simple in structure, high in reliability, light and portable, easy to install, easy to integrate, and meets the requirements of all-weather work, but also solves the problems of exis

Method used

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  • River flow monitoring device based on very high frequency/ultra high frequency (VHF/UHF) portable radar

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0011] The accompanying drawing shows that the present invention is a VHF / UHF-based portable radar river flow monitoring device. As shown in the embodiment of the figure, the device includes:

[0012] The antenna system uses three Yagi antennas, and the antennas are erected on the river bank, and the transmitter excitation signal provided by the frequency synthesizer is radiated to the river surface at a specific wave speed width through the middle antenna; the three receivers receive the feedback from the antenna system respectively. Wave signals are sent to the receiver to complete the frequency conversion and conditioning of the signal; the frequency synthesizer generates various clocks, reference and timing signals required for the work of the entire device; the signal processor performs digital-to-analog conversion on the intermediate frequency sig...

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Abstract

The invention discloses a device used for monitoring the surface flow rate and flow of a river or a strait by utilizing a very high frequency/ultra high frequency (VHF/UHF) radar, and particularly relates to a river flow monitoring device based on the VHF/UHF portable radar. The river flow monitoring device is erected on a shore side which keeps a certain distance from a river bank, the estimation of water velocity of the river or the strait can be accurately achieved by utilizing the Bragg principle, the river flow monitoring device can measure the radial velocity of thousands of points in the different distances and different wave beam ranges between the upper stream and the lower stream of the river, and a discharge flow vector diagram is calculated through a host computer. The river flow monitoring device based on the VHF/UHF portable radar can work all weather, is characterized by being small in cost, small in size, light in weight, low in power consumption, and the like, and can meet the requirements of vehicle mounting and installation of a portable base station. The river flow monitoring device based on the VHF/UHF portable radar resolves the problems that traditional flow measuring technology is large in text difficulty and is low in measuring accuracy, and test conditions are heavily affected by the geographical environment and weather, and has the advantages of being high in measuring accuracy, simple in structure, high in reliability, light in weight, portable, easy to install, and the like.

Description

technical field [0001] The invention relates to a radar device, in particular to a VHF / UHF portable radar river flow monitoring device. Background technique [0002] As we all know, river flow measurement technology can be divided into two categories: contact measurement and non-contact measurement. In recent years, non-contact measurement has gradually developed. Compared with contact measurement technology, non-contact measurement technology has the advantages of fast measurement speed, ensuring the safety of hydrological survey technicians, reducing the loss of measuring instruments, and more portable installation. . However, in terms of measurement accuracy and stability, tactile measurement technology is still superior. [0003] The present invention proposes a river flow monitoring device based on VHF / UHF portable radar, that is, a radar river flow monitoring system. The system uses the wireless electromagnetic wave signal emitted by the VHF / UHF portable radar base s...

Claims

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Application Information

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IPC IPC(8): G01F1/66G01P5/00G01C13/00
CPCY02A90/30
Inventor 孔凡志谢洪磊陆文斌王少刚
Owner SHANGHAI GUOYUE INFORMATION SCI & TECH
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