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Flow meter based on frequency mixing

A flowmeter and frequency mixing technology, applied in the field of flowmeters, can solve problems such as the inability to improve the accuracy of measuring flow rate, and achieve the effects of improving measurement sensitivity, reducing hardware costs, and improving measurement accuracy

Active Publication Date: 2018-04-20
WUHAN NEWFIBER OPTOELECTRONICS TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a flowmeter based on frequency mixing, aiming to solve the above-mentioned technical problem that the accuracy of measuring flow velocity cannot be improved under the condition of low hardware configuration

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a flow meter based on frequency mixing. The flow meter will not use hardware components with high performance, high computing power and large capacity as support to improve measuring sensitivity of flow meter any more. Instead, by means of frequency mixing, the flow meter can reduce the frequency of waveform signals input by a single chip microcomputer to avoid the phase acquisition of waveform signals with relatively high frequency by hardware components with high performance, high computing power and large capacity. Relatively good sensitivity can be achieved by simple circuit. The requirements for and the cost of hardware components are reduced. The cost of hardware components is reduced, while the measuring accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of flowmeters, in particular to a flowmeter based on frequency mixing. Background technique [0002] In the prior art, in the flow velocity measurement, the time difference method based on the mixing flowmeter uses the principle of different sound propagation speeds in water with different flow velocities, and uses the time measurement method to measure the time difference of sound propagation between two ultrasonic probes to calculate the water flow rate. flow rate. In the existing time-difference method based on the mixing flow meter, the first time-difference calculation method is: CPLD measurement time method; the CPLD measurement time method measures the time difference with a complex programmable logic device (Complex Programmable Logic Device, abbreviated CPLD) The development of flowmeter is the core technology. Such technical solutions are driven by transducers, received by transducers, signal ampl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/66
CPCG01F1/662Y02A20/00
Inventor 潘凌武治国张春萍李立春陈鹏徐标沈海超徐景峰
Owner WUHAN NEWFIBER OPTOELECTRONICS TECH