Water flow velocity measurement radar

A water flow speed measurement and radar technology, which is applied in the direction of fluid speed measurement, measurement devices, radio wave measurement systems, etc., can solve the problems that cannot be widely used in small and medium-sized river flow measurement, real-time data calculation, poor detection distance accuracy, etc. , to achieve the effect of facilitating phase and power control, improving detection distance accuracy, and reducing transmission power

Active Publication Date: 2021-06-18
江苏雨能水利工程有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Due to design reasons, the water flow speed radar equipment available on the market has problems such as poor detection distance accuracy, high detection power consumption, inability to perform real-time data calculation, poor adaptability to targets, etc., and cannot be widely used in domestic small and medium-sized rivers. The flow rate measurement uses the

Method used

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Embodiment Construction

[0037] like figure 1 As shown, the water flow speed measuring radar of the present invention includes an upper cooling fin cover plate 1, a cavity structure 4 on both sides, the middle is isolated by an aluminum alloy plate, a lower fan heat fin cover plate 6, and 4 LO (local oscillator) radio frequency modules 2, 4 TR (transmitting and receiving) radio frequency modules 3, OCXC (vibration source) board 7 and signal processing board 5, power interface 9, power indicator light 10, RS232 interface 11 and other components. The upper cooling fin cover 1 and the lower cooling fin cover 6 respectively have a built-in cooling block, which can contact and dissipate the core components on the baseband board. The antenna interface position 8 is reserved on the same side as the power interface, which is convenient for TR (Transmitting and receiving) output from the antenna interface on the radio frequency module 3 .

[0038] like figure 2 As shown, one side of the four TR RF modules (...

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Abstract

The invention discloses a water flow speed measurement radar which is characterized by comprising an antenna, a time delay reconstruction radio frequency TR radio frequency module and a radio frequency sampling signal processing module. The time delay reconstruction radio frequency TR radio frequency module comprises a radio frequency signal receiving channel, a radio frequency signal transmitting channel and a change-over switch. One of the radio frequency signal receiving channel and the radio frequency signal transmitting channel is selected to be connected with the antenna through the change-over switch; the radio frequency signal receiving channel comprises a first low-noise amplifier and a programmable delay line, and amplification of received signals and program control configuration of fixed deviation time delay are achieved through the first low-noise amplifier and the programmable delay line. The radar has the characteristics of high water flow velocity measurement resolution, high sampling point density, large detection dynamic range, full intelligence, wide applicability and the like.

Description

technical field [0001] The invention relates to the technical field of water velocity measurement radar application. Specifically, the echo Doppler signal is generated on the water surface ripple by the radio frequency signal emitted by the radar, and the feature extraction and processing are performed on it to realize the self-adaptive measurement function of the water flow velocity. Background technique [0002] Radar uses the reflection (or scattering) phenomenon of the target on the electromagnetic wave to find the target and measure its position and speed. The radar uses the time difference between the received echo and the transmitted wave to measure the distance, uses the Doppler effect of radio wave propagation to measure the moving speed of the target, and uses the amplitude or phase difference of the target echo on each antenna channel to determine its direction. [0003] The water flow speed radar utilizes the Bragg scattering theory of radar electromagnetic waves...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/58G01S7/28G01S7/282G01S7/285G01P5/00
CPCG01S13/581G01S7/28G01S7/282G01S7/285G01P5/00G01S2013/0245Y02A90/30
Inventor 曹振新袁红泉许湘剑
Owner 江苏雨能水利工程有限公司
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