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A kind of adcp velocity measurement system using high order harmonic component

A high-order harmonic and flow velocity technology, applied in measurement devices, fluid velocity measurement, velocity/acceleration/shock measurement, etc., can solve the problem of inability to take into account the measurement distance and measurement accuracy, increase the size and weight of the equipment, and reduce the transmission frequency. and other problems, to achieve the effect of improving electro-acoustic conversion efficiency, improving measurement accuracy, and improving reliability

Active Publication Date: 2017-12-29
HANGZHOU KAIHONG FLUID TECH CO LTD
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Problems solved by technology

In order to increase the detection distance, it is necessary to use a relatively low transmission frequency, which will affect the accuracy of the measurement accordingly
Therefore, single-frequency work cannot take into account the contradiction between measurement distance and measurement accuracy
In order to solve the above problems, ADCP equipment with dual-frequency operation is currently used on the market, but this type of equipment actually uses two sets of hardware systems, which increases the volume and weight of the equipment and also increases the cost of the equipment. This invention design solves the above two questions

Method used

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  • A kind of adcp velocity measurement system using high order harmonic component
  • A kind of adcp velocity measurement system using high order harmonic component
  • A kind of adcp velocity measurement system using high order harmonic component

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0032] As used herein, terms such as "module" and "system" are intended to include computer-related entities such as, but not limited to, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a module may be, but is not limited to being limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. For example, both an applicatio...

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Abstract

The present invention relates to an ADCP flow velocity measurement system, in particular to an ADCP flow velocity measurement system using high-order harmonic components, a digital signal encoding transmission module connected with a high-power signal drive module, an underwater acoustic transducer and a high-power signal drive module Connected through the transducer impedance matching module. The transducer impedance matching module is connected with the echo beam receiving signal amplifying module, and the echo beam receiving signal amplifying module is connected with the high-pass filter module. The high-pass filter module is connected to the high-order harmonic sampling module through an analog-to-digital conversion module, and the high-pass filter module is also directly connected to the high-order harmonic sampling module. The DSP digital signal processing module is connected with the higher harmonic sampling module. In the present invention, by increasing the power of the ADCP transmitting system, the ADCP ultrasonic velocity generates abundant harmonic components during the propagation process, and then analyzes the frequency of the received harmonic signals through the receiving system, so as to reduce the size of the detection unit, The purpose of improving measurement accuracy.

Description

technical field [0001] The invention relates to an ADCP flow velocity measurement system, in particular to an ADCP flow velocity measurement system using high-order harmonic components. Background technique [0002] ADCP, Acoustic Doppler Velocity Profiler is a velocity measurement instrument that has been developed and widely used in the past ten years. It is a product developed on the basis of improving the traditional river measurement method. Based on the basic principles of sonar and radar and digital signal processing technology, the measured water velocity has an accuracy that cannot be compared with traditional speedometers. It can directly measure the flow velocity profile of the river section, without disturbing the flow field during measurement, with low test consumption, large velocity measurement range, convenient maintenance, and its efficiency is dozens of times higher than traditional methods. It can be applied in freshwater environments such as rivers, lake...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/24
Inventor 傅琰王月斌
Owner HANGZHOU KAIHONG FLUID TECH CO LTD
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