Ultrasonic flow measurement method and device
A flow measurement and ultrasonic technology, applied in the information field, can solve the problems of large clutter, error, unstable ultrasonic signal, etc., and achieve the effect of reducing the error
Active Publication Date: 2019-03-01
SANCHUAN WISDOM TECH CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Once there are foreign objects in the pipeline fluid or the ultrasonic signal is unstable due to the transducer itself, and there are large clutter, the usual method of measuring flow will produce errors.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the present invention Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] figure 1 It is a schematic flow chart of an ultrasonic flow measurement method according to an embodiment of the present invention, as figure 1 As shown, the ultrasonic flow metering method provided by the present invention includes:
[0022] S101. Obtain a first time and a second time according to a first threshold, wherein the first threshold is a preset ultrasonic amp...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an ultrasonic flow measuring method and device. The method includes the steps that first time and second time are obtained according to a first threshold value; if in a first preset number of sampling times, the number of the times that the absolute value of the difference value between the first time and the second time is larger than a preset number of times, the first threshold value is switched into a second threshold value, wherein the second threshold value is a preset ultrasonic amplitude value and is larger than the first threshold value, and the sampling wave with the amplitude increasing to be the first threshold value and the sampling wave with the amplitude increasing to be the second threshold value are different sampling waves; third time and fourth time are obtained according to the second threshold value, and flow is calculated according to the third time and the fourth time. The device is used for executing the method. According to the ultrasonic flow measuring method and device, as the threshold values can be switched by judging the abnormal condition of a time difference signal of ultrasonic measuring, the normal time difference signal can be obtained, and the error of ultrasonic flow measuring is reduced.
Description
technical field [0001] The invention relates to the field of information technology, in particular to an ultrasonic flow measurement method and device. Background technique [0002] Currently, water meters and heat meters utilizing the ultrasonic principle are used in various places. [0003] Ultrasonic measurement is to send and receive ultrasonic signals through the transducer, and use the time difference method to measure the flow of fluid in the pipeline, which requires that the ultrasonic waves can be received normally without being blocked. Once there are foreign objects in the pipeline fluid or the ultrasonic signal is unstable due to the transducer itself, and when there is a large clutter, the usual method of measuring the flow rate will produce errors. [0004] Therefore, how to propose a method that can reduce the measurement error in the presence of signal interference has become an urgent problem to be solved. Contents of the invention [0005] Aiming at the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/66
CPCG01F1/66
Inventor 祝向辉姜龙明
Owner SANCHUAN WISDOM TECH CO LTD