CN-117434206-B - Method, system, electronic device and storage medium for positioning gas leakage source

CN117434206BCN 117434206 BCN117434206 BCN 117434206BCN-117434206-B

Abstract

The invention discloses a method for positioning a gas leakage source, which comprises the following steps of quantifying a linear concentration reconstruction technology application condition, wherein the linear concentration reconstruction technology application condition comprises a wind direction condition, a wind speed condition, an X-axis peak point position distance ratio and a peak point position accuracy expressed by an X-axis peak point position difference percentage, determining a positionable section1 based on the linear concentration reconstruction technology application condition, determining a positionable section2 based on an acceptable positioning accuracy accuracy, continuously collecting a plurality of groups of data, and determining a gas leakage source (X k ,y k ) point position according to the wind direction condition and the X-axis reconstruction peak point position of each group of data by S110. The invention also discloses a system for positioning the gas leakage source, electronic equipment and a storage medium. The invention is based on the linear concentration reconstruction technology, can find the gas leakage event timely and early, and has high positioning speed, high stability and high accuracy of the gas leakage source.

Inventors

WANG GUOLONG
LI BO
DING DEWU
GAO SHAOHUA
FENG YUNXIA
JIA RUNZHONG
DONG RUI

Assignees

中国石油化工股份有限公司
中石化安全工程研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20220715

Claims (13)

1. A method of locating a source of gas leakage comprising the steps of: S110, quantifying applicable conditions of a linear concentration reconstruction technology, wherein the applicable conditions of the linear concentration reconstruction technology comprise wind direction conditions, wind speed conditions, X-axis peak point position distance ratio and peak point position accuracy expressed by X-axis peak point position difference percentage; An optical remote sensing monitoring device/pyramid reflector at one end point in a linear concentration reconstruction technology is taken as an origin, the direction of the pyramid reflector/optical remote sensing monitoring device at the other end point is taken as the positive direction of an X axis, and the wind direction on the dominant wind direction is taken as the positive direction of a Y axis, so that a plane rectangular coordinate system is constructed; The calculation formula of the X-axis peak point position distance ratio is as follows: If it is The X-axis peak point-to-point distance ratio is ; If it is The X-axis peak point-to-point distance ratio is , Wherein, the Reconstructing peak point positions for the X axis, wherein the unit is m, The distance between two end points of the optical remote sensing monitoring equipment/the pyramid beam splitter is m; Percentage difference of X-axis peak point position The calculation formula of (2) is as follows: , Wherein, the The unit is m, which is the theoretical peak point position of the gas leakage source on the X axis; S120, determining a positionable section1 based on a line concentration reconstruction technology application condition; S130, determining a locatable section2 based on the acceptable locating accuracy accuracy, and S140, continuously collecting multiple groups of data, and determining the point position of a gas leakage source (X k ,y k ) according to the wind direction condition and the X-axis reconstruction peak point position of each group of data.
2. The method of positioning a gas leakage source according to claim 1, wherein the wind direction condition is an angle between a dominant wind direction and a real-time wind direction The counterclockwise direction is positive.
3. The method of locating a gas leakage source according to claim 1, wherein step S120 comprises: According to the accuracy of the acceptable peak point position and the corresponding applicable wind direction And determining a positionable section1 by combining the wind speed condition and the X-axis peak point position distance ratio and the i light path layout conditions in the linear concentration reconstruction technology.
4. A method of locating a gas leakage source according to claim 3, wherein step S130 comprises: randomly setting a plurality of simulated gas leakage source points (x j ,y j ) in the positionable section 1; Multiple sets of random wind directions 、 Under the condition, calculating the theoretical peak point position of the simulated gas leakage source point position (X j ,y j ) on the X axis 、 Based on the X-axis peak point position difference percentage Reconstructed peak point location on the X-axis of (c) 、 ; Calculating the difference percentage of the simulated gas leakage source point positions Positioning accuracy accuracy j ; And calculating the positioning accuracy accuracy j of each point in the positionable section1 through difference value calculation, and determining the positionable section2 with the acceptable positioning accuracy accuracy.
5. The method of locating a gas leakage source according to claim 4, wherein the direction of the wind is random 、 Under the condition, the theoretical peak point position of the gas leakage source point position (X j ,y j ) on the X axis is simulated , , In the formula, 、 In the interval And (3) inner part.
6. The method of locating a gas leakage source according to claim 5, wherein the percentage difference is based on an X-axis peak point location Reconstructed peak point location on the X-axis of (c) , 。
7. The method of locating a gas leakage source according to claim 6, wherein the percentage difference between the simulated gas leakage source points is calculated Is that , Wherein, the 、 Respectively based on the reconstructed peak point positions on the X axis 、 The calculated abscissa of the simulated gas leakage source point, , 。
8. The method of locating a gas leakage source according to claim 7, wherein the locating accuracy is , In the formula, To perform the simulated gas leakage source point difference percentage for a certain simulated gas leakage source point (x j ,y j ) The total number of times that is calculated, To simulate the difference percentage of the gas leakage source point position Times less than a preset acceptable value.
9. The method of locating a gas leakage source according to claim 8, wherein step S140 comprises: S141, continuously collecting h groups of data, wherein m groups of data accord with the applicable conditions of the section1 capable of being positioned, and h-m groups of data do not accord with the applicable conditions of the section1 capable of being positioned; s142, judging whether the h-group data X-axis reconstruction peak point positions are located in the same section: if yes, go to step S143; If not, go to step S144; S143 judges whether there is h group data Wherein 、 The included angle data of any two groups of wind directions in the h groups of data: if so, positioning a gas leakage source (x k ,y k ) at the center of section3, section3 being formed by 、 X-axis reconstruction peak point location A region formed in the section; if not, judging whether the m groups of data exist Wherein 、 Maximum and minimum values of the reconstructed peak point positions on the X axis in the m groups of data: If not, positioning a gas leakage source (x k ,y k ) at the center of section 3; if so, taking section2 as input to construct an objective function Determining the point position of a gas leakage source (x k ,y k ) through an optimization algorithm, wherein , , Wherein x and y are the abscissa and the ordinate of any point in section2, 、 The maximum value and the minimum value of the included angle of the wind direction in the m groups of data; s144, judging whether the X-axis reconstruction peak point positions of the m groups of data are located in different intervals: if not, go to step S143; If yes, two groups of data based on different intervals 、、、 Constructing an objective function Determining the point position of a gas leakage source (x k ,y k ) through an optimization algorithm, wherein , , Wherein x and y are the abscissa and the ordinate of any point in section 2.
10. A system for locating a source of gas leakage using a method as claimed in any one of claims 1 to 9, comprising: The data analysis unit is used for quantifying the applicable conditions of the linear concentration reconstruction technology, wherein the applicable conditions of the linear concentration reconstruction technology comprise wind direction conditions, wind speed conditions, X-axis peak point position distance ratios and peak point position accuracy expressed by X-axis peak point position difference percentages; the data acquisition unit is used for acquiring multiple groups of data of the area to be detected, and each group of data comprises an included angle of wind direction Reconstructing peak point positions of wind speed and X axis And (C) sum And the positioning unit is used for determining the gas leakage source (X k ,y k ) point position according to the wind direction condition of each group of data and the X-axis reconstruction peak point position.
11. The system for locating a gas leakage source according to claim 10, wherein the data acquisition unit comprises: A line concentration monitoring module, comprising: an optical remote sensing monitoring device host disposed at an end point of the monitoring boundary; controlling a cradle head to control an optical remote sensing monitoring equipment host to realize 180-degree horizontal rotation and pitching adjustment so as to complete focusing with a pyramid reflector, and The pyramid reflectors are uniformly distributed on the monitoring boundary and the other end point thereof; a meteorological data acquisition module arranged at the middle position of the monitoring boundary and having no shielding around the meteorological data acquisition module, and The ground control module is used for realizing information transmission through the wireless transmission system, the linear concentration monitoring module and the meteorological data acquisition module, acquiring data acquired by the optical remote sensing monitoring equipment host computer in real time, acquiring the data acquired by the meteorological data acquisition module and remotely controlling the operation mode of the cradle head.
12. An electronic device, comprising: at least one processor, and A memory communicatively coupled to the at least one processor, wherein, The memory stores instructions executable by the at least one processor to cause the at least one processor to perform the method of locating a gas leakage source according to any one of claims 1 to 9.
13. A non-transitory computer readable storage medium storing computer executable instructions for causing a computer to perform the method of locating a gas leakage source according to any one of claims 1 to 9.

Description

Method, system, electronic device and storage medium for positioning gas leakage source Technical Field The invention relates to the technical field of monitoring and positioning of an atmospheric pollution source, in particular to a method, a system, electronic equipment and a storage medium for positioning a gas leakage source based on linear concentration reconstruction. Background With the acceleration of petrochemical park construction and the increasing frequency of production activities, the likelihood of atmospheric contaminant leakage events increases greatly. How to find the gas leakage source in time and early in the early stage of accident occurrence has important significance for emergency treatment of pollution accidents and reduction of accident loss. In the aspect of gas leakage source positioning, a method for positioning a gas leakage source by combining a Z-shaped search algorithm, an evolutionary concentration gradient search algorithm and a pollution source positioning mobile robot carrying a pollutant sensor array is mainly disclosed by an active olfaction method based on a mobile robot and a static gas source positioning method based on a wireless sensor network at present, as in a patent CN109540141A, and a method for positioning the position of the gas leakage source by combining multiple sensors in a city and an atmospheric diffusion model is disclosed as in a patent CN 104597212A. However, due to the influences of factors such as standing of devices in the petrochemical park, wide occupied area, multiple obstacles and the like, the problem that a mobile robot moves slowly, has insufficient obstacle avoidance and cruising ability, and does not reach the standard in explosion-proof performance is often faced when an active olfactory position is developed in the petrochemical park to locate a gas leakage source. In addition, because of the particularity of the petrochemical park, the quantity and the distribution of possible leakage sources of gas are large, the whole coverage of the whole park is difficult to realize by means of a static gas source positioning method of a wireless sensor network, only certain key equipment can be monitored on line, and the positioning accuracy is closely related to the distribution condition of the sensor points, the performance and the quantity of the sensors and the like. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. Disclosure of Invention One of the purposes of the present invention is to provide a method, a system, an electronic device and a storage medium for locating a gas leakage source, so as to solve the problem that the petrochemical park is difficult to accurately judge the position of the gas leakage source. Another object of the present invention is to provide a method, a system, an electronic device and a storage medium for locating a gas leakage source, so as to solve the problem of the prior art that the operation difficulty is high. Another object of the present invention is to provide a method, system, electronic device and storage medium for locating a gas leakage source, so as to solve the problem that the existing monitoring technology cannot fully monitor a target park. To achieve the above object, according to a first aspect of the present invention, there is provided a method of locating a gas leakage source, comprising the steps of: S110, quantifying applicable conditions of a linear concentration reconstruction technology, wherein the applicable conditions of the linear concentration reconstruction technology comprise wind direction conditions, wind speed conditions, X-axis peak point position distance ratio and peak point position accuracy expressed by X-axis peak point position difference percentage; S120, determining a positionable section1 based on a line concentration reconstruction technology application condition; S130, determining a locatable section2 based on the acceptable locating accuracy accuracy, and S140, continuously collecting multiple groups of data, and determining the point position of a gas leakage source (X k,yk) according to the wind direction condition and the X-axis reconstruction peak point position of each group of data. In the technical scheme, an optical remote sensing monitoring device/pyramid reflector at one end point in the linear concentration reconstruction technology is taken as an original point, the direction of the pyramid reflector/optical remote sensing monitoring device at the other end point is taken as the positive direction of the X axis, and the wind direction on the dominant wind direction is taken as the positive direction of the Y axis, so that a plane rectangular coordinate system is constructed. Further, in the above