CN118225209B - Gas meter detection method and system based on image processing - Google Patents
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Abstract
The invention discloses a gas meter detection method and a gas meter detection system based on image processing, which relate to the technical field of gas meters. The comprehensive detection method is beneficial to reducing the safety risks such as fire and leakage, guaranteeing the life and property safety of people, and realizing the standard management of the installation position of the gas meter by judging whether the gas meter is positioned in a specified area and carrying out early warning prompt and notification on installer for reinstallation.
Description
Technical Field
The invention relates to the technical field of gas meters, in particular to a gas meter detection method and system based on image processing.
Background
With the continuous development and maturity of computer vision and image processing technology, the image processing method is widely applied to the field of gas meter detection, and gas is used as energy supply because a shop front delicatessen is a food making and selling place. Gas safety is very important for both shops and customers. The gas meter in the shop front delicately stores is detected and evaluated, so that the safety and the reliability of gas use are ensured, and therefore, the gas meter detection method and the gas meter detection system based on image processing are generated.
The gas meter detection method in the traditional technology needs to consume a great deal of manpower and time, and is low in efficiency. Particularly, in the large-scale gas meter detection task, the manual detection cannot meet the requirements of rapidness and high efficiency, the detection efficiency and the detection cost are affected, and obviously, the detection method and the detection system have at least the following problems: 1. the lack of systematic security detection methods in the conventional technology may cause hidden danger to the installation location and not be perceived in time. For example, improper installation distance or installation in the vicinity of flammable materials may increase the risk of fire or leakage, while lack of ventilation to evaluate the installation site may result in gas accumulation during use, increasing the risk of poisoning or explosion.
2. The traditional technology can only manually check the position, appearance and other aspects of the gas meter, cannot acquire more detailed morphological data, does not comprehensively evaluate the installation quality and potential safety risk of the gas meter, and the lack of a method for acquiring the morphological data can lead to incapability of timely monitoring the refitting behavior of the gas meter, and if the gas meter is tampered with, the normal operation of the gas meter can be influenced and the safety risk is increased.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a gas meter detection method and system based on image processing.
In order to solve the technical problems, the invention adopts the following technical scheme: the present invention provides in a first aspect an image processing-based gas meter detection method, comprising: step one, obtaining distance and ventilation evaluation coefficients: after the installation of each gas meter in the target area is completed, acquiring the wall distance, the heat source distance and the inflammable material distance corresponding to each gas meter in the target area, the ambient wind speed, the ambient wind quantity and the ambient ventilation times corresponding to each unit time, and further analyzing and obtaining the installation distance evaluation coefficient and the installation ventilation evaluation coefficient corresponding to each gas meter in the target area.
Step two, obtaining an integrated installation position evaluation coefficient: and analyzing and obtaining the installation position evaluation coefficients corresponding to the gas meters in the target area according to the installation distance evaluation coefficients and the installation ventilation evaluation coefficients corresponding to the gas meters in the target area.
Step three, judging the installation of a specified area: and judging whether each gas meter is installed in the target area or not according to the corresponding installation position evaluation coefficient of each gas meter in the target area, if the installation of a certain gas meter in the target area is not in the specified area, carrying out early warning prompt, and informing gas installer to reinstall until the installation of the gas meter is in the specified area.
Step four, obtaining morphological data: when the installation of each gas meter in the target area meets the standard, setting a plurality of acquisition time points in each gas meter in the target area, further acquiring morphology data corresponding to each gas meter in the target area at each acquisition time point, wherein the morphology data comprises rectangle degree, compactness and transverse-longitudinal ratio, and further analyzing to obtain morphology evaluation coefficients corresponding to each gas meter in the target area at each acquisition time point.
Fifthly, judging modification of the gas meter: and judging whether each gas meter in the target area of each acquisition time point is modified without permission according to the morphological evaluation coefficient corresponding to each gas meter in the target area of each acquisition time point, and if so, carrying out early warning prompt.
Preferably, the analysis obtains the installation distance evaluation coefficient corresponding to each gas meter in the target area, and the specific analysis process is as follows: the distance between each gas meter and each corresponding wall, the distance between each heat source and the distance between each inflammable material in the target area are respectively recorded as、AndWherein, the method comprises the steps of, wherein,The number corresponding to each gas meter is indicated,，The number corresponding to each wall is indicated,，The numbers corresponding to the heat sources are shown,，Indicating the corresponding number of each inflammable material,N is any integer greater than 2, u is any integer greater than 2, m is any integer greater than 2, v is any integer greater than 2, and the integer is substituted into a calculation formula to obtain the first integer in the target areaInstallation distance evaluation coefficient corresponding to each gas meterWherein, the method comprises the steps of, wherein,、、Respectively set standard distance between the gas meter and the corresponding wall, standard distance between the gas meter and the corresponding heat source and standard distance between the gas meter and the corresponding inflammable material,、、Respectively set weighting factors corresponding to the distance between the gas meter and the wall, the heat source and the inflammable material,、、And the distance between the set permitted gas meter and the wall, the distance between the set permitted gas meter and the set permitted heat source and the distance between the set permitted gas meter and the set permitted flammable material are respectively different.
Preferably, the analysis obtains the installation ventilation evaluation coefficients corresponding to each gas meter in the target area, and the specific analysis process is as follows: respectively recording the ambient wind speed, the ambient wind quantity and the ambient ventilation times corresponding to each gas meter in the target area as、AndWherein, the method comprises the steps of, wherein,The number corresponding to each unit time is indicated,X is any integer greater than 2, and is substituted into a calculation formulaObtaining the first in the target areaInstallation ventilation evaluation coefficient corresponding to each gas meterWherein, the method comprises the steps of, wherein,、、Respectively setting standard ambient wind speed, standard ambient wind quantity and standard ambient ventilation times corresponding to the gas meter in unit time,、、Respectively set weight factors corresponding to the ambient wind speed of the gas meter, the ambient wind quantity and the ambient ventilation times in unit time,、、The set environmental wind speed difference, the set environmental wind speed difference and the set environmental ventilation frequency difference in unit time of the gas meter are respectively set.
Preferably, the analysis obtains the installation position evaluation coefficients corresponding to each gas meter in the target area, and the specific analysis process is as follows: substituting the installation distance evaluation coefficient and the installation ventilation evaluation coefficient corresponding to each gas meter in the target area into a calculation formulaObtaining the first in the target areaInstallation position evaluation coefficients corresponding to each gas meterWherein, the method comprises the steps of, wherein,、And e represents a natural constant, wherein the weight factors correspond to the set gas meter installation distance evaluation coefficient and the weight factors correspond to the installation ventilation evaluation coefficient respectively.
Preferably, the specific judging process is as follows: a1, obtaining the model corresponding to each gas meter in the target area, comparing the model corresponding to each gas meter in the target area with the model corresponding to each standard installation position evaluation coefficient in the database, and taking the standard installation position evaluation coefficient in the database as the standard installation position evaluation coefficient corresponding to each gas meter in the target area if the model corresponding to each gas meter in the target area is the same as the model corresponding to each standard installation position evaluation coefficient in the database.
A2, comparing the installation position evaluation coefficient corresponding to each gas meter in the target area with the standard installation position evaluation coefficient corresponding to the database, if the installation position evaluation coefficient corresponding to a certain gas meter in the target area is larger than or equal to the standard installation position evaluation coefficient corresponding to the database, judging that the installation of the gas meter in the target area is not located in the specified area, and if the installation position evaluation coefficient corresponding to the certain gas meter in the target area is smaller than the standard installation position evaluation coefficient corresponding to the database, judging that the installation of the gas meter in the target area is located in the specified area, and judging whether the installation of each gas meter in the target area is located in the specified area or not.
Preferably, the analysis obtains morphological evaluation coefficients corresponding to each gas meter in the target area of each acquisition time point, and the specific analysis process is as follows: the corresponding rectangle degree, compactness degree and transverse-longitudinal ratio of each gas meter in each acquisition time point target area are respectively recorded as、AndWherein, the method comprises the steps of, wherein,The corresponding number of each acquisition time point is represented,，The number corresponding to each gas meter is indicated,，For any integer greater than 2, n is any integer greater than 2, and is substituted into a calculation formulaIn (1) to obtain the firstThe first acquisition time point in the target areaMorphological evaluation coefficients corresponding to each gas meterWherein, the method comprises the steps of, wherein,、、Respectively set standard rectangle degree, standard compactness degree and standard transverse-longitudinal ratio corresponding to the gas meter,、、Respectively set weight factors corresponding to the rectangle degree of the gas meter, the compactness degree and the transverse-longitudinal ratio of the gas meter,、、The set allowable gas meter has poor rectangle degree, poor allowable compactness and poor allowable transverse-longitudinal ratio.
Preferably, the determining whether each gas meter in the target area of each collection time point is modified without permission includes the following specific determining process: r1, obtaining the model corresponding to each gas meter in the target area, comparing the model corresponding to each gas meter in the target area with the model corresponding to each standard morphological evaluation coefficient in the database, and taking the standard morphological evaluation coefficient in the database as the standard morphological evaluation coefficient corresponding to the gas meter in the target area if the model corresponding to the certain gas meter in the target area is the same as the model corresponding to the certain standard morphological evaluation coefficient in the database.
R2, comparing the morphological evaluation coefficients corresponding to the gas meters in the target areas of all the acquisition time points with the standard morphological evaluation coefficients corresponding to the database, judging whether the gas meters in the target areas of all the acquisition time points are modified without permission if the morphological evaluation coefficients corresponding to the gas meters in the target areas of all the acquisition time points are larger than or equal to the standard morphological evaluation coefficients corresponding to the database, and judging whether the gas meters in the target areas of all the acquisition time points are modified without permission if the morphological evaluation coefficients corresponding to the gas meters in the target areas of all the acquisition time points are smaller than the standard morphological evaluation coefficients corresponding to the database.
The present invention provides in a second aspect an image processing-based gas meter detection system comprising: distance and ventilation evaluation coefficient acquisition module: and the device is used for acquiring the wall distance, the heat source distance and the inflammable material distance corresponding to each gas meter in the target area, the ambient wind speed, the ambient wind quantity and the ambient ventilation times corresponding to each unit time after each gas meter in the target area is installed, and further analyzing and obtaining the installation distance evaluation coefficient and the installation ventilation evaluation coefficient corresponding to each gas meter in the target area.
Comprehensive installation position evaluation coefficient acquisition module: and the gas meter detection module is used for analyzing and obtaining the installation position evaluation coefficients corresponding to the gas meters in the target area according to the installation distance evaluation coefficients and the installation ventilation evaluation coefficients corresponding to the gas meters in the target area.
A prescribed region installation judging module: and the gas meter installation module is used for judging whether each gas meter in the target area is installed in a specified area according to the corresponding installation position evaluation coefficient of each gas meter in the target area, if not, carrying out early warning prompt, and informing gas installer to reinstall until the gas meter is installed in the specified area.
Morphology data acquisition module: the method is used for setting a plurality of acquisition time points in each gas meter in the target area after the installation of each gas meter in the target area meets the standard, further acquiring morphology data corresponding to each gas meter in the target area at each acquisition time point, wherein the morphology data comprises rectangle degree, compactness and transverse-longitudinal ratio, and further analyzing and obtaining morphology evaluation coefficients corresponding to each gas meter in the target area at each acquisition time point.
The gas meter refitting judging module comprises: and the early warning prompt device is used for judging whether each gas meter in the target area of each acquisition time point is modified without permission according to the morphological evaluation coefficient corresponding to each gas meter in the target area of each acquisition time point, and if the gas meter in the target area of a certain acquisition time point is modified without permission, the early warning prompt device carries out early warning prompt.
The invention has the beneficial effects that: 1. the invention provides a gas meter detection method and a gas meter detection system based on image processing, which utilize an image processing technology to perform data acquisition and analysis by acquiring distance information between a gas meter and surrounding environment, evaluating ventilation condition, monitoring morphological data and the like, so that automatic processing of installation position evaluation and morphological data analysis is realized, efficiency and accuracy are improved, comprehensive evaluation and safety monitoring of the installation position of the gas meter are realized, improper installation position or refitting behaviors can be timely found, early warning prompt can be provided, and safe and compliant operation of the gas meter is ensured. The comprehensive detection method is beneficial to reducing the safety risks such as fire, leakage and the like and guaranteeing the life and property safety of people.
2. According to the embodiment of the invention, the obtained installation distance evaluation coefficient and the installation ventilation evaluation coefficient are comprehensively analyzed to obtain the installation position evaluation coefficient of the gas meter. The gas meter safety monitoring system has the advantages that the gas meter safety monitoring system is used for evaluating the overall installation condition of the gas meter, the safety of the gas meter can be improved, the risk of fire and safety accidents is reduced, and through judging whether the gas meter is located in a specified area or not, and performing early warning prompt and informing installation personnel to reinstall, the gas meter installation position standard management is realized, the gas meter installation condition is ensured to be in accordance with safety standards, management personnel are helped to better know the gas meter installation condition, and follow-up management and maintenance work is guided.
3. According to the embodiment of the invention, whether the gas meter is modified without permission is judged by analyzing the morphological data. If the gas meter at a certain time point is refitted, the system can send an early warning prompt, the process of collecting morphological data is automated, the detection efficiency is improved, the labor cost is reduced, the influence of artificial subjective factors can be avoided to a certain extent, the compliance of gas equipment is guaranteed by judging whether the gas meter is refitted without permission, the normal operation and the safety of the equipment are ensured, and the safety and the management efficiency of the gas equipment are improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the steps of the method of the present invention;
FIG. 2 is a schematic diagram of the system module connection according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention is as shown in fig. 1, and the gas meter detection method based on image processing comprises the following steps: step one, obtaining distance and ventilation evaluation coefficients: after the installation of each gas meter in the target area is completed, acquiring the wall distance, the heat source distance and the inflammable material distance corresponding to each gas meter in the target area, the ambient wind speed, the ambient wind quantity and the ambient ventilation times corresponding to each unit time, and further analyzing and obtaining the installation distance evaluation coefficient and the installation ventilation evaluation coefficient corresponding to each gas meter in the target area.
After each gas meter in the target area is installed, a person needs to be installed to take a picture to upload the gas meter image, a computer vision technology such as an image processing algorithm and a deep learning model is used for identifying the gas meter image and measuring the distance between the gas meter image and a wall, a heat source and inflammable materials, an environment sensor such as a temperature sensor, a humidity sensor and a wind speed sensor is installed in the target area and used for monitoring the environment information in real time, and data collected by the sensor equipment are recorded and analyzed through a connected system so as to acquire the environment wind speed, the environment wind quantity and the corresponding environment ventilation times in each unit time.
In a specific embodiment, the analysis obtains the installation distance evaluation coefficient corresponding to each gas meter in the target area, and the specific analysis process is as follows: the distance between each gas meter and each corresponding wall, the distance between each heat source and the distance between each inflammable material in the target area are respectively recorded as、AndWherein, the method comprises the steps of, wherein,The number corresponding to each gas meter is indicated,，The number corresponding to each wall is indicated,，The numbers corresponding to the heat sources are shown,，Indicating the corresponding number of each inflammable material,N is any integer greater than 2, u is any integer greater than 2, m is any integer greater than 2, v is any integer greater than 2, and the integer is substituted into a calculation formulaObtaining the first in the target areaInstallation distance evaluation coefficient corresponding to each gas meterWherein, the method comprises the steps of, wherein,、、Respectively set standard distance between the gas meter and the corresponding wall, standard distance between the gas meter and the corresponding heat source and standard distance between the gas meter and the corresponding inflammable material,、、Respectively set weighting factors corresponding to the distance between the gas meter and the wall, the heat source and the inflammable material,、、And the distance between the set permitted gas meter and the wall, the distance between the set permitted gas meter and the set permitted heat source and the distance between the set permitted gas meter and the set permitted flammable material are respectively different.
It should be noted that the number of the substrates,、、Are all greater than 0 and less than 1.
It should also be noted that, the set standard distance between the gas meter and the corresponding wall, standard distance between the heat source and the flammable material: according to the relevant regulations or safety standards, a reasonable distance range is set as a standard distance, and the actual values of the distance between each gas meter and each corresponding wall, the distance between each heat source and the distance between each inflammable material in the target area are collected. The accuracy and the integrity of the data are ensured, the collected historical data are analyzed, statistics such as the mean value, the variance, the maximum value, the minimum value and the like of each distance index and the correlation among the distance indexes are calculated, and a proper weight factor is set for each distance index according to the data analysis and the professional judgment. According to the expert's expertise and research basis of the field expert, and discuss and confirm with the field expert, the expert sets up the allowable gas meter and wall distance difference, allowable heat source distance difference and allowable inflammable material distance difference according to own experience and knowledge.
In another specific embodiment, the analysis obtains the installation ventilation evaluation coefficients corresponding to each gas meter in the target area, and the specific analysis process is as follows: respectively recording the ambient wind speed, the ambient wind quantity and the ambient ventilation times corresponding to each gas meter in the target area as、AndWherein, the method comprises the steps of, wherein,The number corresponding to each unit time is indicated,X is any integer greater than 2, and is substituted into a calculation formulaObtaining the first in the target areaInstallation ventilation evaluation coefficient corresponding to each gas meterWherein, the method comprises the steps of, wherein,、、Respectively setting standard ambient wind speed, standard ambient wind quantity and standard ambient ventilation times corresponding to the gas meter in unit time,、、Respectively set weight factors corresponding to the ambient wind speed of the gas meter, the ambient wind quantity and the ambient ventilation times in unit time,、、The set environmental wind speed difference, the set environmental wind speed difference and the set environmental ventilation frequency difference in unit time of the gas meter are respectively set.
It should be noted that the number of the substrates,、、Are all greater than 0 and less than 1.
The actual values of the ambient wind speed, the ambient wind volume, and the ambient ventilation times per unit time corresponding to each gas meter in the target region are collected. The accuracy and the integrity of the data are ensured, the collected historical data are analyzed, and statistics such as the mean value, the variance, the maximum value, the minimum value and the like of the ambient wind speed, the ambient wind quantity and the ambient ventilation times and the correlation among the statistics are calculated. Analyzing the distribution condition and the change trend of the data, and setting proper weight factors for the ambient wind speed, the ambient wind quantity and the ambient ventilation times according to the data analysis and the professional judgment. Setting according to the relation between the gas meter and safety, importance and other factors, setting according to the analysis result of historical data and relevant regulations, setting reasonable standard environment wind speed, standard environment wind quantity and standard environment ventilation times corresponding to unit time according to the analysis result of historical data and relevant regulations, and setting the allowable gas meter environment wind speed difference, allowable environment wind quantity difference and allowable environment ventilation times in unit time according to the expertise and research basis of the field expert and carrying out discussion and confirmation with the field expert.
Step two, obtaining an integrated installation position evaluation coefficient: and analyzing and obtaining the installation position evaluation coefficients corresponding to the gas meters in the target area according to the installation distance evaluation coefficients and the installation ventilation evaluation coefficients corresponding to the gas meters in the target area.
In a specific embodiment, the analysis obtains the installation position evaluation coefficients corresponding to each gas meter in the target area, and the specific analysis process is as follows: substituting the installation distance evaluation coefficient and the installation ventilation evaluation coefficient corresponding to each gas meter in the target area into a calculation formulaObtaining the first in the target areaInstallation position evaluation coefficients corresponding to each gas meterWherein, the method comprises the steps of, wherein,、And e represents a natural constant, wherein the weight factors correspond to the set gas meter installation distance evaluation coefficient and the weight factors correspond to the installation ventilation evaluation coefficient respectively.
It should be noted that the number of the substrates,、Are all greater than 0 and less than 1.
The weight factors corresponding to the set gas meter installation distance evaluation coefficients and the weight factors corresponding to the installation ventilation evaluation coefficients are also described: different weights can be allocated to different assessment coefficients according to the importance degree and the actual situation of the safety. The setting may be performed according to the relationship between the evaluation coefficient and the security, importance, and the like.
Step three, judging the installation of a specified area: and judging whether each gas meter is installed in the target area or not according to the corresponding installation position evaluation coefficient of each gas meter in the target area, if the installation of a certain gas meter in the target area is not in the specified area, carrying out early warning prompt, and informing gas installer to reinstall until the installation of the gas meter is in the specified area.
In a specific embodiment, the specific judging process is as follows: a1, obtaining the model corresponding to each gas meter in the target area, comparing the model corresponding to each gas meter in the target area with the model corresponding to each standard installation position evaluation coefficient in the database, and taking the standard installation position evaluation coefficient in the database as the standard installation position evaluation coefficient corresponding to each gas meter in the target area if the model corresponding to each gas meter in the target area is the same as the model corresponding to each standard installation position evaluation coefficient in the database.
A2, comparing the installation position evaluation coefficient corresponding to each gas meter in the target area with the standard installation position evaluation coefficient corresponding to the database, if the installation position evaluation coefficient corresponding to a certain gas meter in the target area is larger than or equal to the standard installation position evaluation coefficient corresponding to the database, judging that the installation of the gas meter in the target area is not located in the specified area, and if the installation position evaluation coefficient corresponding to the certain gas meter in the target area is smaller than the standard installation position evaluation coefficient corresponding to the database, judging that the installation of the gas meter in the target area is located in the specified area, and judging whether the installation of each gas meter in the target area is located in the specified area or not.
The image data of the gas meter in the target area is collected, including a front photo of the gas meter, and the model is identified by using image processing and pattern recognition technology. The model is trained using machine learning or deep learning based methods to identify gas phenotype information in the image.
According to the embodiment of the invention, the obtained installation distance evaluation coefficient and the installation ventilation evaluation coefficient are comprehensively analyzed to obtain the installation position evaluation coefficient of the gas meter. The gas meter safety monitoring system has the advantages that the gas meter safety monitoring system is used for evaluating the overall installation condition of the gas meter, the safety of the gas meter can be improved, the risk of fire and safety accidents is reduced, and through judging whether the gas meter is located in a specified area or not, and performing early warning prompt and informing installation personnel to reinstall, the gas meter installation position standard management is realized, the gas meter installation condition is ensured to be in accordance with safety standards, management personnel are helped to better know the gas meter installation condition, and follow-up management and maintenance work is guided.
Step four, obtaining morphological data: when the installation of each gas meter in the target area meets the standard, setting a plurality of acquisition time points in each gas meter in the target area, further acquiring morphology data corresponding to each gas meter in the target area at each acquisition time point, wherein the morphology data comprises rectangle degree, compactness and transverse-longitudinal ratio, and further analyzing to obtain morphology evaluation coefficients corresponding to each gas meter in the target area at each acquisition time point.
It should be noted that, the staff of each store in the target area need to upload the corresponding image of the gas meter at each acquisition time point, perform preprocessing on the collected gas meter image, including operations such as image denoising, image enhancement, image smoothing, etc., so as to improve the subsequent image processing and feature extraction effects, segment the gas meter image, extract the gas meter from the background so as to facilitate the subsequent morphological feature extraction, extract the morphological features such as rectangle degree, compactness degree, transverse-longitudinal ratio, etc. on the segmented gas meter image by using the image processing technology. Morphological features may be extracted using image segmentation, edge detection, shape matching, etc.
In a specific embodiment, the analysis obtains morphological evaluation coefficients corresponding to each gas meter in the target area of each acquisition time point, and the specific analysis process is as follows: the corresponding rectangle degree, compactness degree and transverse-longitudinal ratio of each gas meter in each acquisition time point target area are respectively recorded as、AndWherein, the method comprises the steps of, wherein,The corresponding number of each acquisition time point is represented,，The number corresponding to each gas meter is indicated,，For any integer greater than 2, n is any integer greater than 2, and is substituted into a calculation formulaIn (1) to obtain the firstThe first acquisition time point in the target areaMorphological evaluation coefficients corresponding to each gas meterWherein, the method comprises the steps of, wherein,、、Respectively set standard rectangle degree, standard compactness degree and standard transverse-longitudinal ratio corresponding to the gas meter,、、Respectively set weight factors corresponding to the rectangle degree of the gas meter, the compactness degree and the transverse-longitudinal ratio of the gas meter,、、The set allowable gas meter has poor rectangle degree, poor allowable compactness and poor allowable transverse-longitudinal ratio.
It should be noted that the number of the substrates,、、Are all greater than and less than 1.
The rectangle, compactness and transverse-longitudinal ratio corresponding to each gas meter in the target area are collected. And (3) ensuring the accuracy and the integrity of the data, analyzing the collected historical data, and calculating statistics such as the mean value, the variance, the maximum value, the minimum value and the like of the rectangle degree, the compactness and the aspect ratio, and the correlation between the statistics. Analyzing the distribution condition and the change trend of the data, and setting proper weight factors for the rectangle degree, the compactness degree and the transverse-longitudinal ratio according to the data analysis and the professional judgment. Setting according to the relation between the gas meter and safety, importance and other factors, setting according to the analysis result of the historical data and relevant regulations, setting the standard rectangle degree, standard compactness and standard transverse-longitudinal ratio corresponding to a reasonable gas meter according to the analysis result of the historical data and relevant regulations, according to the professional knowledge and research basis of the field expert, discussing and confirming with the field expert, and setting the rectangle degree difference, the permission compactness difference and the permission transverse-longitudinal ratio difference of the permission gas meter according to the experience and knowledge of the expert.
Fifthly, judging modification of the gas meter: and judging whether each gas meter in the target area of each acquisition time point is modified without permission according to the morphological evaluation coefficient corresponding to each gas meter in the target area of each acquisition time point, and if so, carrying out early warning prompt.
In a specific embodiment, the determining whether each gas meter in the target area at each collection time point is modified by no authority includes the following steps: r1, obtaining the model corresponding to each gas meter in the target area, comparing the model corresponding to each gas meter in the target area with the model corresponding to each standard morphological evaluation coefficient in the database, and taking the standard morphological evaluation coefficient in the database as the standard morphological evaluation coefficient corresponding to the gas meter in the target area if the model corresponding to the certain gas meter in the target area is the same as the model corresponding to the certain standard morphological evaluation coefficient in the database.
R2, comparing the morphological evaluation coefficients corresponding to the gas meters in the target areas of all the acquisition time points with the standard morphological evaluation coefficients corresponding to the database, judging whether the gas meters in the target areas of all the acquisition time points are modified without permission if the morphological evaluation coefficients corresponding to the gas meters in the target areas of all the acquisition time points are larger than or equal to the standard morphological evaluation coefficients corresponding to the database, and judging whether the gas meters in the target areas of all the acquisition time points are modified without permission if the morphological evaluation coefficients corresponding to the gas meters in the target areas of all the acquisition time points are smaller than the standard morphological evaluation coefficients corresponding to the database.
According to the embodiment of the invention, whether the gas meter is modified without permission is judged by analyzing the morphological data. If the gas meter at a certain time point is refitted, the system can send an early warning prompt, the process of collecting morphological data is automated, the detection efficiency is improved, the labor cost is reduced, the influence of artificial subjective factors can be avoided to a certain extent, the compliance of gas equipment is guaranteed by judging whether the gas meter is refitted without permission, the normal operation and the safety of the equipment are ensured, and the safety and the management efficiency of the gas equipment are improved.
The embodiment of the invention is shown in fig. 2, and the gas meter detection system based on image processing comprises: the system comprises a distance and ventilation evaluation coefficient acquisition module, a comprehensive installation position evaluation coefficient acquisition module, a specified area installation judgment module, a morphological data acquisition module, a gas meter refitting judgment module and a database.
Distance and ventilation evaluation coefficient acquisition module: and the device is used for acquiring the wall distance, the heat source distance and the inflammable material distance corresponding to each gas meter in the target area, the ambient wind speed, the ambient wind quantity and the ambient ventilation times corresponding to each unit time after each gas meter in the target area is installed, and further analyzing and obtaining the installation distance evaluation coefficient and the installation ventilation evaluation coefficient corresponding to each gas meter in the target area.
Comprehensive installation position evaluation coefficient acquisition module: and the gas meter detection module is used for analyzing and obtaining the installation position evaluation coefficients corresponding to the gas meters in the target area according to the installation distance evaluation coefficients and the installation ventilation evaluation coefficients corresponding to the gas meters in the target area.
A prescribed region installation judging module: and the gas meter installation module is used for judging whether each gas meter in the target area is installed in a specified area according to the corresponding installation position evaluation coefficient of each gas meter in the target area, if not, carrying out early warning prompt, and informing gas installer to reinstall until the gas meter is installed in the specified area.
Morphology data acquisition module: the method is used for setting a plurality of acquisition time points in each gas meter in the target area after the installation of each gas meter in the target area meets the standard, further acquiring morphology data corresponding to each gas meter in the target area at each acquisition time point, wherein the morphology data comprises rectangle degree, compactness and transverse-longitudinal ratio, and further analyzing and obtaining morphology evaluation coefficients corresponding to each gas meter in the target area at each acquisition time point.
The gas meter refitting judging module comprises: and the early warning prompt device is used for judging whether each gas meter in the target area of each acquisition time point is modified without permission according to the morphological evaluation coefficient corresponding to each gas meter in the target area of each acquisition time point, and if the gas meter in the target area of a certain acquisition time point is modified without permission, the early warning prompt device carries out early warning prompt.
The invention provides a gas meter detection method and a gas meter detection system based on image processing, which utilize an image processing technology to perform data acquisition and analysis by acquiring distance information between a gas meter and surrounding environment, evaluating ventilation condition, monitoring morphological data and the like, so that automatic processing of installation position evaluation and morphological data analysis is realized, efficiency and accuracy are improved, comprehensive evaluation and safety monitoring of the installation position of the gas meter are realized, improper installation position or refitting behaviors can be timely found, early warning prompt can be provided, and safe and compliant operation of the gas meter is ensured. The comprehensive detection method is beneficial to reducing the safety risks such as fire, leakage and the like and guaranteeing the life and property safety of people.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar arrangements may be substituted by those skilled in the art, without departing from the principles of the invention or beyond the scope of the invention as defined in the description.
Claims (5)
1. The gas meter detection method based on image processing is characterized by comprising the following steps of:
Step one, obtaining distance and ventilation evaluation coefficients: after the installation of each gas meter in the target area is completed, acquiring the wall distance, the heat source distance and the inflammable material distance corresponding to each gas meter in the target area, the ambient wind speed, the ambient wind quantity and the ambient ventilation times corresponding to each unit time, and further analyzing and obtaining the installation distance evaluation coefficient and the installation ventilation evaluation coefficient corresponding to each gas meter in the target area;
the analysis obtains the corresponding installation distance evaluation coefficients of each gas meter in the target area, and the specific analysis process is as follows:
The distance between each gas meter and each corresponding wall, the distance between each heat source and the distance between each inflammable material in the target area are respectively recorded as 、AndWherein, the method comprises the steps of, wherein,The number corresponding to each gas meter is indicated,，The number corresponding to each wall is indicated,，The numbers corresponding to the heat sources are shown,，Indicating the corresponding number of each inflammable material,N is any integer greater than 2, u is any integer greater than 2, m is any integer greater than 2, v is any integer greater than 2, and the integer is substituted into a calculation formulaObtaining the first in the target areaInstallation distance evaluation coefficient corresponding to each gas meterWherein, the method comprises the steps of, wherein,、、Respectively set standard distance between the gas meter and the corresponding wall, standard distance between the gas meter and the corresponding heat source and standard distance between the gas meter and the corresponding inflammable material,、、Respectively set weighting factors corresponding to the distance between the gas meter and the wall, the heat source and the inflammable material,、、The distance between the set permitted gas meter and the wall is different from the distance between the set permitted gas meter and the wall, and the distance between the set permitted gas meter and the wall is different from the distance between the set permitted gas meter and the wall;
the analysis obtains the installation ventilation evaluation coefficients corresponding to each gas meter in the target area, and the specific analysis process is as follows:
respectively recording the ambient wind speed, the ambient wind quantity and the ambient ventilation times corresponding to each gas meter in the target area as 、AndWherein, the method comprises the steps of, wherein,The number corresponding to each unit time is indicated,X is any integer greater than 2, and is substituted into a calculation formulaObtaining the first in the target areaInstallation ventilation evaluation coefficient corresponding to each gas meterWherein, the method comprises the steps of, wherein,、、Respectively setting standard ambient wind speed, standard ambient wind quantity and standard ambient ventilation times corresponding to the gas meter in unit time,、、Respectively set weight factors corresponding to the ambient wind speed of the gas meter, the ambient wind quantity and the ambient ventilation times in unit time,、、The set environmental wind speed difference, the set environmental wind speed difference and the set environmental ventilation frequency difference in unit time of the gas meter are respectively set;
step two, obtaining an integrated installation position evaluation coefficient: according to the installation distance evaluation coefficients and the installation ventilation evaluation coefficients corresponding to the gas meters in the target area, analyzing to obtain the installation position evaluation coefficients corresponding to the gas meters in the target area;
The analysis obtains the corresponding installation position evaluation coefficients of each gas meter in the target area, and the specific analysis process is as follows:
Substituting the installation distance evaluation coefficient and the installation ventilation evaluation coefficient corresponding to each gas meter in the target area into a calculation formula Obtaining the first in the target areaInstallation position evaluation coefficients corresponding to each gas meterWherein, the method comprises the steps of, wherein,、Respectively setting a weight factor corresponding to a gas meter installation distance evaluation coefficient and a weight factor corresponding to an installation ventilation evaluation coefficient, wherein e represents a natural constant;
Step three, judging the installation of a specified area: judging whether each gas meter is installed in the target area or not according to the corresponding installation position evaluation coefficient of each gas meter in the target area, if not, carrying out early warning prompt, and informing gas installer to reinstall until the gas meter is installed in the specified area;
Step four, obtaining morphological data: when the installation of each gas meter in the target area meets the standard, setting a plurality of acquisition time points in each gas meter in the target area, further acquiring morphology data corresponding to each gas meter in the target area at each acquisition time point, wherein the morphology data comprises rectangle degree, compactness degree and transverse-longitudinal ratio, and further analyzing to obtain morphology evaluation coefficients corresponding to each gas meter in the target area at each acquisition time point;
Fifthly, judging modification of the gas meter: and judging whether each gas meter in the target area of each acquisition time point is modified without permission according to the morphological evaluation coefficient corresponding to each gas meter in the target area of each acquisition time point, and if so, carrying out early warning prompt.
2. The method for detecting gas meters based on image processing as claimed in claim 1, wherein the specific judging process is as follows:
A1, obtaining the model corresponding to each gas meter in a target area, comparing the model corresponding to each gas meter in the target area with the model corresponding to each standard installation position evaluation coefficient in a database, and taking the standard installation position evaluation coefficient in the database as the standard installation position evaluation coefficient corresponding to each gas meter in the target area if the model corresponding to a certain gas meter in the target area is the same as the model corresponding to a certain standard installation position evaluation coefficient in the database;
A2, comparing the installation position evaluation coefficient corresponding to each gas meter in the target area with the standard installation position evaluation coefficient corresponding to the database, if the installation position evaluation coefficient corresponding to a certain gas meter in the target area is larger than or equal to the standard installation position evaluation coefficient corresponding to the database, judging that the installation of the gas meter in the target area is not located in the specified area, and if the installation position evaluation coefficient corresponding to the certain gas meter in the target area is smaller than the standard installation position evaluation coefficient corresponding to the database, judging that the installation of the gas meter in the target area is located in the specified area, and judging whether the installation of each gas meter in the target area is located in the specified area or not.
3. The method for detecting gas meters based on image processing as defined in claim 1, wherein the analysis obtains morphological evaluation coefficients corresponding to each gas meter in the target area of each acquisition time point, and the specific analysis process is as follows:
The corresponding rectangle degree, compactness degree and transverse-longitudinal ratio of each gas meter in each acquisition time point target area are respectively recorded as 、AndWherein, the method comprises the steps of, wherein,The corresponding number of each acquisition time point is represented,，The number corresponding to each gas meter is indicated,，For any integer greater than 2, n is any integer greater than 2, and is substituted into a calculation formulaIn (1) to obtain the firstThe first acquisition time point in the target areaMorphological evaluation coefficients corresponding to each gas meterWherein, the method comprises the steps of, wherein,、、Respectively set standard rectangle degree, standard compactness degree and standard transverse-longitudinal ratio corresponding to the gas meter,、、Respectively set weight factors corresponding to the rectangle degree of the gas meter, the compactness degree and the transverse-longitudinal ratio of the gas meter,、、The set allowable gas meter has poor rectangle degree, poor allowable compactness and poor allowable transverse-longitudinal ratio.
4. The method for detecting gas meters based on image processing as claimed in claim 3, wherein said determining whether each gas meter in each acquisition time point target area is modified by no authority comprises the following steps:
R1, acquiring a model corresponding to each gas meter in a target area, comparing the model corresponding to each gas meter in the target area with a model corresponding to each standard morphological evaluation coefficient in a database, and taking the standard morphological evaluation coefficient in the database as the standard morphological evaluation coefficient corresponding to the gas meter in the target area if the model corresponding to a certain gas meter in the target area is the same as the model corresponding to a certain standard morphological evaluation coefficient in the database;
R2, comparing the morphological evaluation coefficients corresponding to the gas meters in the target areas of all the acquisition time points with the standard morphological evaluation coefficients corresponding to the database, judging whether the gas meters in the target areas of all the acquisition time points are modified without permission if the morphological evaluation coefficients corresponding to the gas meters in the target areas of all the acquisition time points are larger than or equal to the standard morphological evaluation coefficients corresponding to the database, and judging whether the gas meters in the target areas of all the acquisition time points are modified without permission if the morphological evaluation coefficients corresponding to the gas meters in the target areas of all the acquisition time points are smaller than the standard morphological evaluation coefficients corresponding to the database.
5. An image processing-based gas meter detection system that performs the image processing-based gas meter detection method of any one of claims 1 to 4, comprising:
Distance and ventilation evaluation coefficient acquisition module: the method comprises the steps that after installation of each gas meter in a target area is completed, the wall distance, the heat source distance and the inflammable material distance corresponding to each gas meter in the target area, the ambient wind speed, the ambient wind quantity and the ambient ventilation times corresponding to each unit time are obtained, and then the installation distance evaluation coefficient and the installation ventilation evaluation coefficient corresponding to each gas meter in the target area are obtained through analysis;
Comprehensive installation position evaluation coefficient acquisition module: the gas meter detection device is used for analyzing and obtaining the installation position evaluation coefficients corresponding to the gas meters in the target area according to the installation distance evaluation coefficients and the installation ventilation evaluation coefficients corresponding to the gas meters in the target area;
a prescribed region installation judging module: the gas meter installation method comprises the steps that according to installation position evaluation coefficients corresponding to each gas meter in a target area, whether each gas meter in the target area is installed in a specified area or not is judged, if the gas meter in the target area is installed in a non-specified area, early warning prompt is carried out, and gas installer is informed to reinstall until the gas meter is installed in the specified area;
Morphology data acquisition module: when the installation of each gas meter in the target area meets the standard, setting a plurality of acquisition time points in each gas meter in the target area, and further acquiring morphology data corresponding to each gas meter in the target area at each acquisition time point, wherein the morphology data comprises rectangle degree, compactness degree and transverse-longitudinal ratio, and further analyzing to obtain morphology evaluation coefficients corresponding to each gas meter in the target area at each acquisition time point;
The gas meter refitting judging module comprises: and the early warning prompt device is used for judging whether each gas meter in the target area of each acquisition time point is modified without permission according to the morphological evaluation coefficient corresponding to each gas meter in the target area of each acquisition time point, and if the gas meter in the target area of a certain acquisition time point is modified without permission, the early warning prompt device carries out early warning prompt.
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