Leakage point detection method based on Hall flowmeter
A detection method and flow meter technology, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of wasting time, increasing the difficulty of human visits at the back end, etc., and achieve the goal of improving accuracy and smoothing curves Effect
Active Publication Date: 2020-03-31
南京施迈艾库智能科技有限公司
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
It can only be a waste of time through human visits and investigations at the back end. Due to aesthetic reasons and special requirements, the existing water supply pipes are relatively hidden, which makes it more difficult for human visits at the back end. A method that can directly find the location of water leakage is needed. Methods
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 moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] The present invention will be further described below in conjunction with specific preferred embodiments.
[0023] Based on the detection method of the water leakage point of the Hall flowmeter, it is characterized in that it is suitable for the state of constant diameter pipeline water supply, and the Hall flowmeter is installed at the water supply point. The specific steps are as follows:
[0024] Step 1, measure the total length of the water supply pipeline as L;
[0025] Step 2, install a Hall flowmeter at the outlet pipe of the water supply point, and the Hall flowmeter is used to measure the Hall trigger time interval;
[0026] Step 3: Start water supply, stop when the water supply is enough to fill the entire pipeline, and record the next series of time point data t through the Hall flowmeter 0 ,t 1 ,t 2 ... t n-1 ,t n ;
[0027] Step 4: Fast Fourier transformation is performed on the time point data string to obtain the frequency domain sequence data t 0 ...
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 a leakage point detection method based on a Hall flow meter. The detection method is applicable to constant diameter pipeline water supply, the Hall flow meter is arranged at awater supply point, acquires Hall triggering time intervals and stops after water supply amount is enough to fill a whole pipeline, a series of Hall triggering time interval data including t0, t1, t2, t3...t(n-1) and tn are acquired, a data string is subjected to rapid Fourier transformation to obtain frequency domain sequence data t0', t1', t2', t3'...t(n-1)' and tn', the second half value is changed into 0, after all high-frequency portions are removed, t0'', t1'', t2'', t3''...t(n-1)'' and tn'' are subjected to Fourier inverse transformation to obtain a new sequence T0, T1, T2, T3...T(n-1)and Tn, all x value points of Tx([(T(x-2)+T(x-1 / 2))] and Tx([(T(x+2)+T(x+1))] in the sequence are searched to obtain a new sequence X1, X2...Xt, the maximum value Xk of the sequence X1, X2...Xt is searched, the corresponding sequence number TZ of the Xk in the sequence T0, T1, T2, T3...T(n-1) and Tn is found out, a position with the distance of (Z / n)*L away from the water supply point is the position of a leakage point, and L is the overall length of a water pipe.
Description
technical field [0001] The invention relates to the technical field of water supply, in particular a method for detecting water leakage points based on a Hall flowmeter. Background technique [0002] In the face of complex pipeline water supply sites, when water leakage occurs at the back end, it is impossible to directly detect the leakage distance through the equipment at the water supply point to reduce the detection time. It can only be a waste of time through human visits and investigations at the back end. Due to aesthetic reasons and special requirements, the existing water supply pipes are relatively hidden, which makes it more difficult for human visits at the back end. A method that can directly find the location of water leakage is needed. Methods. Contents of the invention [0003] The technical problem to be solved in the present invention is to provide a water leakage point detection method based on the Hall flowmeter. This method can obtain the Hall trigger...
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): F17D5/02
CPCF17D5/02
Inventor 胡维荣
Owner 南京施迈艾库智能科技有限公司