CN113049187B - Leakage concentration analysis system and method applying flow monitoring - Google Patents
Leakage concentration analysis system and method applying flow monitoring Download PDFInfo
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- CN113049187B CN113049187B CN202011220783.6A CN202011220783A CN113049187B CN 113049187 B CN113049187 B CN 113049187B CN 202011220783 A CN202011220783 A CN 202011220783A CN 113049187 B CN113049187 B CN 113049187B
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- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
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Abstract
The invention relates to a leakage concentration analysis system applying flow monitoring, which comprises: the flow monitoring device is arranged in the oil gun and used for sending a first driving command when detecting that the oil body flow of the oil gun in the current unit time is larger than a preset flow threshold value, and otherwise, sending a second driving command; and the concentration extraction device is used for calculating the real-time concentration of the oil gas emitted by the corresponding nozzle of the oil filling gun based on the received arithmetic mean value, wherein the larger the numerical value of the arithmetic mean value is, the lower the calculated real-time concentration of the oil gas emitted by the nozzle of the oil filling gun is. The invention also relates to a leakage concentration analysis method applying the flow monitoring. The leakage concentration analysis system and method applying flow monitoring are timely, safe and reliable in monitoring. The oil gun can be monitored in real time according to various working parameters of the oil gun, so that whether corresponding counter measures are executed or not is judged based on the detection and monitoring result, and the oil filling safety of the oil gun is guaranteed.
Description
Technical Field
The invention relates to the field of monitoring of oil guns, in particular to a leakage concentration analysis system and method applying flow monitoring.
Background
The fuel gun is the terminal for the fuel dispenser output in the service station, i.e. the part that touches the vehicle's fuel tank. Commonly used are self-sealing fuel guns and compound fuel guns.
The appearance of the common oil gun mainly comprises an oil gun body, a hand guard, a limiting plate, a switch handle, a baffle plate, an automatic control rod and the like. A limiting plate is fixed on the hand guard of the oil gun, and three gears are arranged on the limiting plate. When the switch handle is opened, the baffle can incline 45-60 degrees. The opening of a switch of the oil gun is fixed on the limiting plate, and the oil outlet quantity of the oiling machine is controlled.
After the oil gun is started, the oil gun switch handle is opened, and oil passes through the main valve hole, the venturi tube, the outlet valve and the gun barrel and is output. When oil is added, oil rapidly flows through the venturi tube, a low-pressure area is formed in a sealing cavity between the venturi tube and the auxiliary valve seat, and one path of oil is led to the air nozzle at the front end of the gun barrel and reaches the upper cavity of the self-control membrane. When the oil or foam in the container does not reach the air tap, the low-pressure area is released due to the large ventilation capacity of the air tap; when the oil or foam submerges the air tap, the air tap is blocked, negative pressure is formed in the upper cavity of the self-control membrane, and the self-control membrane moves upwards and the steel balls slide down. The self-sealing rod slides downwards under the pressure of the main valve, and simultaneously drives the switch to trip the support plate, so that the main valve is closed, and the oil gun is self-sealed. After the oil gun is self-sealed, the self-sealing rod and the self-control film are reset under the action of respective spring force, and the switch handle is reset along with the self-sealing rod and the self-control film, so that the oil outlet function is recovered.
At present, each nozzle of a gas station is a disaster facility with accidents, for example, the temperature of oil in the nozzle is too high, the probability of the nozzle firing is improved, and meanwhile, when the nozzle of the nozzle is not tightly closed and oil gas is seriously leaked, the probability of the nozzle firing is also improved, and the parameters cannot be known to workers holding the nozzle.
Disclosure of Invention
In order to solve the technical problems in the related field, the invention provides a leakage concentration analysis system and method applying flow monitoring, which can monitor various working parameters of a fuel gun in real time so as to judge whether to execute corresponding measures based on a monitoring result, thereby ensuring the fuel filling safety of the fuel gun.
For this reason, the present invention needs to have several important points:
(1) analyzing the oil gas leakage concentration of the oil gun based on the oil gas imaging gray value near the oil gun, and providing important reference data for workers operating the oil gun;
(2) the temperature of the oil filling gun is measured in real time, so that when the real-time oil body temperature is larger than or equal to a preset temperature threshold value, oil outlet of the oil filling gun is forbidden, and related fire accidents are avoided.
According to an aspect of the present invention, there is provided a leak concentration analyzing system using flow monitoring, the system including:
the flow monitoring device is arranged in the oil gun and used for sending a first driving command when detecting that the oil body flow of the oil gun in the current unit time is larger than a preset flow threshold;
the flow monitoring equipment is also used for sending a second driving command when detecting that the oil body flow of the oil gun in the current unit time is less than or equal to the preset flow threshold value;
the micro camera shooting mechanism is arranged near the gun mouth of the oil gun, is connected with the flow monitoring equipment and is used for executing field image acquisition on the environment around the gun mouth of the oil gun from the side surface of the gun mouth of the oil gun when receiving the first driving command so as to obtain a gun mouth acquisition image;
the box type filtering equipment is connected with the miniature camera shooting mechanism and used for executing box type filtering processing on the received muzzle collected image so as to obtain and output a corresponding box type filtering image;
the dynamic processing equipment is connected with the box type filtering equipment and is used for executing white balance processing based on a dynamic threshold value on the received box type filtering image so as to obtain and output a corresponding dynamic processing image;
the smoothing device is connected with the dynamic processing device and used for executing the blur processing without the scaling transformation on the received dynamic processing image so as to obtain and output a corresponding smoothing processing image;
the gray level resolution mechanism is connected with the smoothing processing equipment and used for identifying each oil-gas pixel point from the smoothing processing image based on the gray level numerical value range of the gas emitted by the oil body and calculating the arithmetic mean value of each gray level value of each oil-gas pixel point in the smoothing processing image;
the concentration extraction equipment is connected with the gray level resolution mechanism and used for calculating the real-time concentration of oil gas emitted by the corresponding nozzle of the oil filling gun based on the arithmetic mean value, and the calculated real-time concentration of the oil gas emitted by the corresponding nozzle of the oil filling gun is lower when the numerical value of the arithmetic mean value is larger;
wherein, follow based on the grey scale numerical range that the oil body distributes gas each oil gas pixel point of discerning in the smooth processing image includes: and identifying the pixel points of the gray value in the range of the gray value in the smooth processing image as oil-gas pixel points.
According to another aspect of the present invention, there is also provided a leak concentration analyzing method using flow monitoring, the method including:
the method comprises the steps that a flow monitoring device is used, arranged in a fuel filling gun and used for sending a first driving command when the fact that the flow of oil body of the fuel filling gun in the current unit time is larger than a preset flow threshold value is detected;
the flow monitoring equipment is also used for sending a second driving command when detecting that the oil body flow of the oil gun in the current unit time is less than or equal to the preset flow threshold value;
the micro camera shooting mechanism is arranged near a gun mouth of the oil gun, is connected with the flow monitoring equipment and is used for executing field image acquisition on the environment around the gun mouth of the oil gun from the side surface of the gun mouth of the oil gun when receiving the first driving command so as to obtain a gun mouth acquisition image;
the box type filtering equipment is connected with the miniature camera shooting mechanism and used for executing box type filtering processing on the received muzzle collected image so as to obtain and output a corresponding box type filtering image;
using a dynamic processing device, connected to the box filter device, for performing white balance processing based on a dynamic threshold on the received box filter image to obtain and output a corresponding dynamic processing image;
using a smoothing device connected with the dynamic processing device and used for executing the blur processing without the scaling transformation on the received dynamic processing image to obtain and output a corresponding smoothing processing image;
using a gray level resolution mechanism, connecting with the smoothing processing equipment, and identifying each oil-gas pixel point from the smoothing processing image based on the gray level numerical value range of the gas emitted by the oil body, and calculating the arithmetic mean value of each gray level value of each oil-gas pixel point in the smoothing processing image;
the concentration extraction equipment is connected with the gray level resolution mechanism and used for calculating the real-time concentration of oil gas emitted by the corresponding nozzle of the oil filling gun based on the arithmetic mean value, and the larger the numerical value of the arithmetic mean value is, the lower the calculated real-time concentration of the oil gas emitted by the nozzle of the oil filling gun is;
wherein, follow based on the grey scale numerical range that the oil body distributes gas each oil gas pixel point of discerning in the smooth processing image includes: and identifying the pixel points of the gray value in the range of the gray value in the smooth processing image as oil-gas pixel points.
The leakage concentration analysis system and method applying flow monitoring are timely, safe and reliable in monitoring. The oil gun can be monitored in real time according to various working parameters of the oil gun, so that whether corresponding counter measures are executed or not is judged based on the detection and monitoring result, and the oil filling safety of the oil gun is guaranteed.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a view showing an internal structure of a fueling gun to which a leak concentration analyzing system and method using flow rate monitoring according to an embodiment of the present invention are applied.
Detailed Description
Embodiments of a leak concentration analyzing system and method using flow rate monitoring according to the present invention will be described in detail with reference to the accompanying drawings.
A gasoline station refers to a station for replenishing retail gasoline and engine oil, typically with added fuel oil, lubricating oil, etc., that serves automobiles and other motor vehicles. Because the petroleum commodities sold by the gas station have the characteristics of easy combustion and explosion, easy volatilization, easy leakage and easy static charge accumulation, the gas station takes 'safety' as a first criterion. The gas station is forbidden to be filled with gasoline in a carburetor and a dual barrel of an automobile, and all stations need to be flameout first when entering the station and refuel, and all dangerous goods entering the station are forbidden.
The fuel charger is a fuel delivery metering device for directly charging motor vehicles. It forms a complete oil supply system together with oil tank, pipeline, pipe fitting valve, etc. The fuel dispenser is composed of four large assemblies of an oil pump, an oil-gas separator, a meter and a counter, and other parts such as a motor and an oil gun, and any fuel dispenser can be regarded as being composed of the large assembly and other simple parts.
The fuel dispensers used in gas stations are of many different sizes ranging from mechanical, electronic to computer automated fuel dispensers. The flow rate of the fuel dispenser can be divided into 50-60 liters/minute and 80-90 liters/minute. The small-flow oiling machine is suitable for oiling cars and vans; the large-flow oiling machine is suitable for oiling large buses and container trucks. The basic structure (mechanical transmission portion) of the various fuel dispensers is consistent. The difference between the mechanical type and the electronic type lies in the difference of the digital display device, and the electronic type can be matched with a microcomputer for use, thereby achieving the purpose of automatic operation.
At present, each nozzle of a gas station is a disaster facility with accidents, for example, the temperature of oil in the nozzle is too high, the probability of the nozzle firing is improved, and meanwhile, when the nozzle of the nozzle is not tightly closed and oil gas is seriously leaked, the probability of the nozzle firing is also improved, and the parameters cannot be known to workers holding the nozzle.
In order to overcome the defects, the invention builds the leakage concentration analysis system and method applying flow monitoring, and can effectively solve the corresponding technical problems.
Fig. 1 is a view showing an internal structure of a fueling gun to which a leak concentration analyzing system and method using flow rate monitoring according to an embodiment of the present invention are applied.
The leakage concentration analysis system applying flow monitoring according to the embodiment of the invention comprises:
the flow monitoring device is arranged in the oil gun and used for sending a first driving command when detecting that the oil body flow of the oil gun in the current unit time is larger than a preset flow threshold;
the flow monitoring equipment is also used for sending a second driving command when detecting that the oil body flow of the oil gun in the current unit time is less than or equal to the preset flow threshold value;
the micro camera shooting mechanism is arranged near the gun mouth of the oil gun, is connected with the flow monitoring equipment and is used for executing field image acquisition on the environment around the gun mouth of the oil gun from the side surface of the gun mouth of the oil gun when receiving the first driving command so as to obtain a gun mouth acquisition image;
the box type filtering equipment is connected with the miniature camera shooting mechanism and used for executing box type filtering processing on the received muzzle collected image so as to obtain and output a corresponding box type filtering image;
the dynamic processing equipment is connected with the box type filtering equipment and is used for executing white balance processing based on a dynamic threshold value on the received box type filtering image so as to obtain and output a corresponding dynamic processing image;
the smoothing device is connected with the dynamic processing device and used for executing the blur processing without the scaling transformation on the received dynamic processing image so as to obtain and output a corresponding smoothing processing image;
the gray level resolution mechanism is connected with the smoothing processing equipment and used for identifying each oil-gas pixel point from the smoothing processing image based on the gray level numerical value range of the gas emitted by the oil body and calculating the arithmetic mean value of each gray level value of each oil-gas pixel point in the smoothing processing image;
the concentration extraction equipment is connected with the gray level resolution mechanism and used for calculating the real-time concentration of oil gas emitted by the corresponding nozzle of the oil filling gun based on the arithmetic mean value, and the calculated real-time concentration of the oil gas emitted by the corresponding nozzle of the oil filling gun is lower when the numerical value of the arithmetic mean value is larger;
wherein, follow based on the grey scale numerical range that the oil body distributes gas each oil gas pixel point of discerning in the smooth processing image includes: and identifying the pixel points of the gray value in the range of the gray value in the smooth processing image as oil-gas pixel points.
Next, a specific configuration of the leak concentration analyzing system to which the flow rate monitoring is applied according to the present invention will be further described.
In the leak concentration analyzing system using flow monitoring:
and the micro camera shooting mechanism is used for stopping executing field image acquisition on the nozzle of the oil gun when receiving the second driving command.
In the leak concentration analyzing system using flow monitoring:
discerning each oil gas pixel point from in the smooth processing image based on the grey scale value range that the oil body distributes gas includes: and identifying the pixel points of which the gray values are out of the gray value range in the smooth processing image as non-oil gas pixel points.
The leakage concentration analysis system applying flow monitoring can further comprise:
and the temperature measuring mechanism is arranged in the oil gun and used for measuring the temperature of the oil body in the oil gun to be output as the real-time oil body temperature.
The leakage concentration analysis system applying flow monitoring can further comprise:
the electronic control switch is arranged in the oil gun, is connected with the temperature measuring mechanism and is used for forbidding the oil outlet of the oil gun when the received real-time oil body temperature is greater than or equal to a preset temperature threshold value;
and the electronic control switch is also used for allowing the oil gun to discharge oil when the received real-time oil body temperature is smaller than the preset temperature threshold value.
The method for analyzing the leakage concentration by using flow monitoring, which is disclosed by the embodiment of the invention, comprises the following steps:
the method comprises the steps that a flow monitoring device is used, arranged in a fuel filling gun and used for sending a first driving command when the fact that the flow of oil body of the fuel filling gun in the current unit time is larger than a preset flow threshold value is detected;
the flow monitoring equipment is also used for sending a second driving command when detecting that the oil body flow of the oil gun in the current unit time is less than or equal to the preset flow threshold value;
the micro camera shooting mechanism is arranged near a gun mouth of the oil gun, is connected with the flow monitoring equipment and is used for executing field image acquisition on the environment around the gun mouth of the oil gun from the side surface of the gun mouth of the oil gun when receiving the first driving command so as to obtain a gun mouth acquisition image;
the box type filtering equipment is connected with the miniature camera shooting mechanism and used for executing box type filtering processing on the received muzzle collected image so as to obtain and output a corresponding box type filtering image;
using a dynamic processing device, connected to the box filter device, for performing white balance processing based on a dynamic threshold on the received box filter image to obtain and output a corresponding dynamic processing image;
using a smoothing device connected with the dynamic processing device and used for executing the blur processing without the scaling transformation on the received dynamic processing image to obtain and output a corresponding smoothing processing image;
using a gray level resolution mechanism, connecting with the smoothing processing equipment, and identifying each oil-gas pixel point from the smoothing processing image based on the gray level numerical value range of the gas emitted by the oil body, and calculating the arithmetic mean value of each gray level value of each oil-gas pixel point in the smoothing processing image;
the concentration extraction equipment is connected with the gray level resolution mechanism and used for calculating the real-time concentration of oil gas emitted by the corresponding nozzle of the oil filling gun based on the arithmetic mean value, and the larger the numerical value of the arithmetic mean value is, the lower the calculated real-time concentration of the oil gas emitted by the nozzle of the oil filling gun is;
wherein, follow based on the grey scale numerical range that the oil body distributes gas each oil gas pixel point of discerning in the smooth processing image includes: and identifying the pixel points of the gray value in the range of the gray value in the smooth processing image as oil-gas pixel points.
Next, the specific steps of the leak concentration analysis method using flow rate monitoring according to the present invention will be further described.
The leakage concentration analysis method applying flow monitoring comprises the following steps:
and the micro camera shooting mechanism is used for stopping executing field image acquisition on the nozzle of the oil gun when receiving the second driving command.
The leakage concentration analysis method applying flow monitoring comprises the following steps:
discerning each oil gas pixel point from in the smooth processing image based on the grey scale value range that the oil body distributes gas includes: and identifying the pixel points of which the gray values are out of the gray value range in the smooth processing image as non-oil gas pixel points.
The method for analyzing the leakage concentration by using flow monitoring can further comprise the following steps:
the temperature measuring mechanism is arranged in the oil gun and used for measuring the temperature of the oil body in the oil gun to be output as the real-time oil body temperature.
The method for analyzing the leakage concentration by using flow monitoring can further comprise the following steps:
the electronic control switch is arranged in the oil gun, is connected with the temperature measuring mechanism and is used for prohibiting the oil outlet of the oil gun when the received real-time oil body temperature is greater than or equal to a preset temperature threshold value;
and the electronic control switch is also used for allowing the oil gun to discharge oil when the received real-time oil body temperature is smaller than the preset temperature threshold value.
In addition, the micro camera mechanism includes an active pixel sensor for performing photoelectric sensing. An Active Pixel Sensor (APS) is also called an Active Pixel Sensor. Almost at the same time as the invention of the CMOS PPS pixel structure, it was quickly realized that the performance of the pixel could be improved by introducing buffers or amplifiers within the pixel, with its own amplifier within each pixel in the CMOS APS. The amplifying transistor integrated on the surface reduces the effective surface area of the pixel element, reduces the packaging density and enables 40% -50% of incident light to be reflected. Another problem with such sensors is how to achieve a better match between the multi-channel amplifiers of the sensor, which can be better achieved by reducing the residual level of fixed pattern noise. CMOS APS has less power consumption than CCD image sensors because each amplifier within the pixel is activated only during this readout.
Finally, it should be noted that each functional device in the embodiments of the present invention may be integrated into one processing device, or each device may exist alone physically, or two or more devices may be integrated into one device.
The functions, if implemented in the form of software-enabled devices and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A leak concentration resolution system using flow monitoring, the system comprising:
the flow monitoring device is arranged in the oil gun and used for sending a first driving command when detecting that the oil body flow of the oil gun in the current unit time is larger than a preset flow threshold;
the flow monitoring equipment is also used for sending a second driving command when detecting that the oil body flow of the oil gun in the current unit time is less than or equal to the preset flow threshold value;
the micro camera shooting mechanism is arranged near the gun mouth of the oil gun, is connected with the flow monitoring equipment and is used for executing field image acquisition on the environment around the gun mouth of the oil gun from the side surface of the gun mouth of the oil gun when receiving the first driving command so as to obtain a gun mouth acquisition image;
the miniature camera shooting mechanism comprises an active pixel sensor APS (active pixel sensor) for executing photoelectric induction, wherein the active pixel sensor is the active pixel sensor; each pixel in the active pixel sensor is provided with an amplifier, and an amplifying transistor integrated on the surface of the pixel and used as the amplifier reduces the effective surface area of a pixel element, reduces the packaging density and enables 40-50% of incident light to be reflected;
the box type filtering equipment is connected with the miniature camera shooting mechanism and used for executing box type filtering processing on the received muzzle collected image so as to obtain and output a corresponding box type filtering image;
the dynamic processing equipment is connected with the box type filtering equipment and is used for executing white balance processing based on a dynamic threshold value on the received box type filtering image so as to obtain and output a corresponding dynamic processing image;
the smoothing device is connected with the dynamic processing device and used for executing the blur processing without the scaling transformation on the received dynamic processing image so as to obtain and output a corresponding smoothing processing image;
the gray level resolution mechanism is connected with the smoothing processing equipment and used for identifying each oil-gas pixel point from the smoothing processing image based on the gray level numerical value range of the gas emitted by the oil body and calculating the arithmetic mean value of each gray level value of each oil-gas pixel point in the smoothing processing image;
the concentration extraction equipment is connected with the gray level resolution mechanism and used for calculating the real-time concentration of oil gas emitted by the corresponding nozzle of the oil filling gun based on the arithmetic mean value, and the calculated real-time concentration of the oil gas emitted by the corresponding nozzle of the oil filling gun is lower when the numerical value of the arithmetic mean value is larger;
wherein, follow based on the grey scale numerical range that the oil body distributes gas each oil gas pixel point of discerning in the smooth processing image includes: identifying pixel points of the smooth processed image with the gray values within the gray value range as oil-gas pixel points;
the micro camera shooting mechanism is used for stopping executing field image acquisition on a nozzle of the oil gun when receiving the second driving command;
discerning each oil gas pixel point from in the smooth processing image based on the grey scale value range that the oil body distributes gas includes: identifying pixel points of the smooth processed image with the gray values outside the gray value range as non-oil gas pixel points;
and the temperature measuring mechanism is arranged in the oil gun and used for measuring the temperature of the oil body in the oil gun to be output as the real-time oil body temperature.
2. The leak concentration resolution system using flow monitoring of claim 1, wherein the system further comprises:
the electronic control switch is arranged in the oil gun, is connected with the temperature measuring mechanism and is used for forbidding the oil outlet of the oil gun when the received real-time oil body temperature is greater than or equal to a preset temperature threshold value;
and the electronic control switch is also used for allowing the oil gun to discharge oil when the received real-time oil body temperature is smaller than the preset temperature threshold value.
3. A leak concentration analysis method using flow monitoring, the method comprising:
the method comprises the steps that a flow monitoring device is used, arranged in a fuel filling gun and used for sending a first driving command when the fact that the flow of oil body of the fuel filling gun in the current unit time is larger than a preset flow threshold value is detected;
the flow monitoring equipment is also used for sending a second driving command when detecting that the oil body flow of the oil gun in the current unit time is less than or equal to the preset flow threshold value;
the micro camera shooting mechanism is arranged near a gun mouth of the oil gun, is connected with the flow monitoring equipment and is used for executing field image acquisition on the environment around the gun mouth of the oil gun from the side surface of the gun mouth of the oil gun when receiving the first driving command so as to obtain a gun mouth acquisition image;
the miniature camera shooting mechanism comprises an active pixel sensor APS (active pixel sensor) for executing photoelectric induction, wherein the active pixel sensor is the active pixel sensor; each pixel in the active pixel sensor is provided with an amplifier, and an amplifying transistor integrated on the surface of the pixel and used as the amplifier reduces the effective surface area of a pixel element, reduces the packaging density and enables 40-50% of incident light to be reflected;
the box type filtering equipment is connected with the miniature camera shooting mechanism and used for executing box type filtering processing on the received muzzle collected image so as to obtain and output a corresponding box type filtering image;
using a dynamic processing device, connected to the box filter device, for performing white balance processing based on a dynamic threshold on the received box filter image to obtain and output a corresponding dynamic processing image;
using a smoothing device connected with the dynamic processing device and used for executing the blur processing without the scaling transformation on the received dynamic processing image to obtain and output a corresponding smoothing processing image;
using a gray level resolution mechanism, connecting with the smoothing processing equipment, and identifying each oil-gas pixel point from the smoothing processing image based on the gray level numerical value range of the gas emitted by the oil body, and calculating the arithmetic mean value of each gray level value of each oil-gas pixel point in the smoothing processing image;
the concentration extraction equipment is connected with the gray level resolution mechanism and used for calculating the real-time concentration of oil gas emitted by the corresponding nozzle of the oil filling gun based on the arithmetic mean value, and the larger the numerical value of the arithmetic mean value is, the lower the calculated real-time concentration of the oil gas emitted by the nozzle of the oil filling gun is;
wherein, follow based on the grey scale numerical range that the oil body distributes gas each oil gas pixel point of discerning in the smooth processing image includes: identifying pixel points of the smooth processed image with the gray values within the gray value range as oil-gas pixel points;
the micro camera shooting mechanism is used for stopping executing field image acquisition on a nozzle of the oil gun when receiving the second driving command;
discerning each oil gas pixel point from in the smooth processing image based on the grey scale value range that the oil body distributes gas includes: identifying pixel points of the smooth processed image with the gray values outside the gray value range as non-oil gas pixel points;
the temperature measuring mechanism is arranged in the oil gun and used for measuring the temperature of the oil body in the oil gun to be output as the real-time oil body temperature.
4. The leak concentration resolution method using flow monitoring of claim 3, wherein the method further comprises:
the electronic control switch is arranged in the oil gun, is connected with the temperature measuring mechanism and is used for prohibiting the oil outlet of the oil gun when the received real-time oil body temperature is greater than or equal to a preset temperature threshold value;
and the electronic control switch is also used for allowing the oil gun to discharge oil when the received real-time oil body temperature is smaller than the preset temperature threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220783.6A CN113049187B (en) | 2020-11-05 | 2020-11-05 | Leakage concentration analysis system and method applying flow monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN110894057A (en) * | 2019-12-08 | 2020-03-20 | 王洁 | Anti-mistake refueling control platform and method |
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| FR2681124A1 (en) * | 1991-09-06 | 1993-03-12 | Oster Jean Pierre | Device for detecting leaks in buried structures for storing or conveying sulphuric acid by pipeline |
| CN104528627A (en) * | 2014-12-19 | 2015-04-22 | 华南理工大学 | Frequency conversion oil gas recovery control system and method for oiling machine with self-calibration of gas liquid ratio |
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| CN110778491A (en) * | 2019-11-02 | 2020-02-11 | 孙磊 | Oil tank internal foreign matter detection platform |
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