Gasoline leakage detection method and device based on butene substance concentration detection

Abstract

This invention discloses a gasoline leak detection method based on the concentration detection of butene-like substances, comprising the following steps: inhaling the gas to be tested; aligning the direction of movement of the gas to be tested parallel to the emission direction of the light source; ensuring that the shortest connection path between the structural surfaces of the first and second electrodes passes through an insulating frame at least once; ionizing the gas to be tested by irradiation with light to capture the ionized gas and obtain current signal data; obtaining the concentration of butene-like substances based on the current signal data, and comparing it with preset data to determine whether gasoline is leaking or to calculate the concentration of gasoline volatiles. This method can acquire multiple sets of noise data, denoising the original data based on the noise data, and avoids direct illumination of the electrodes by the light source, reducing errors. Furthermore, the absence of a light source and the use of a spiral insulating frame significantly reduce moisture interference in the automotive testing environment, improving detection accuracy. By causing relative movement between the gas to be tested and the light, ionization is more likely to occur, resulting in a faster response speed and improved automotive testing efficiency.

Description

Technical Field

[0001] This invention relates to the field of automotive testing technology, and in particular to a gasoline leak detection method and apparatus based on the detection of butene-based substance concentration. Background Technology

[0002] Because gasoline is volatile, insufficient sealing of equipment during transportation, storage, and handling can lead to significant gasoline evaporation. This not only results in serious energy waste but also damages the atmosphere when the evaporating gasoline fumes enter the air, and can harm the nervous system when inhaled. Gasoline leaks from vehicles are becoming increasingly serious, and there are relatively few suitable devices for detecting gasoline volatiles in the market. Gasoline leaks sometimes occur during vehicle exhaust emission testing, necessitating a gasoline volatile detection device suitable for this scenario. However, the testing environment in vehicle inspection is more complex than in general environments, with more airborne particles and significant moisture buildup after the chassis has been submerged in water, affecting detection accuracy. Furthermore, vehicle inspection requires faster response times in these complex environments. Summary of the Invention

[0003] The main objective of this invention is to provide a gasoline leak detection method based on the concentration detection of butene-like substances, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A gasoline leak detection method based on butene concentration detection includes the following steps:

[0006] Step 1: Inhale the gas to be tested;

[0007] Step 2: Align the direction of gas movement with the direction of light source emission;

[0008] The shortest connection path between the structural surfaces of the first electrode and the second electrode must pass through the insulating frame at least once;

[0009] Step 3 involves ionizing the gas to be tested by irradiating it with light, capturing the ionized state of the gas to be tested, and obtaining current signal data.

[0010] Step 4: Obtain the concentration of butene-like substances based on the current signal data, and compare it with the preset data to determine whether gasoline is leaking or to calculate the concentration of gasoline volatiles.

[0011] Further, step 1 includes the following steps:

[0012] An air filter is installed in the air duct that draws in the gas to be tested to filter out particles.

[0013] A gas flow meter is installed in the air duct that draws in the gas to be tested to obtain flow data;

[0014] Turn on the air pump to draw in the gas to be tested.

[0015] Furthermore, step 1 also includes the following steps:

[0016] Extend the distance to the gas inlet of the test gas by installing an extended suction tube at the gas inlet of the test gas.

[0017] Furthermore, the step in step 2, which involves ensuring that the shortest connection path between the structural surfaces of the first electrode and the second electrode passes through the insulating frame at least, specifically involves:

[0018] The shortest connection path between the structural surfaces of the first electrode and the second electrode passes through at least a spiral insulating frame. When the number of first electrodes is greater than 1, multiple first electrodes are connected in series on the insulating frame.

[0019] Furthermore, step 3 specifically includes:

[0020] The gas to be tested is ionized by irradiating it with light of the first energy value, and the ionized gas to be tested is captured to obtain the first current signal data.

[0021] The gas to be tested is ionized by irradiating it with light of the second energy value, and the ionized gas to be tested is captured to obtain the second current signal data.

[0022] The first current signal data and the second current signal data are amplified.

[0023] Furthermore, step 3 includes the following steps:

[0024] Obtain the third current signal data when the light source is off;

[0025] The third current signal data is amplified.

[0026] Furthermore, step 4 includes the following steps:

[0027] Using the first and third current signal data as noise data, the second current signal data is noise-removed to obtain the fourth current signal data. The concentration of butene-like substances is obtained based on the fourth current signal data, and compared with preset data to determine whether gasoline is leaking or to calculate the concentration of gasoline volatiles based on the preset data.

[0028] According to another aspect of the present invention, a gasoline leak detection device based on butene concentration detection is provided, comprising:

[0029] The testing chamber has walls;

[0030] A light source, located within the detection chamber;

[0031] An air pump is used to draw the air to be tested into the testing chamber, and the emission direction of the light source is parallel to the air intake direction;

[0032] A first electrode, located within the gas chamber;

[0033] The second electrode is located in the gas chamber;

[0034] The first electrode or the second electrode is connected to the wall via an insulating frame.

[0035] The processing module is connected to the light source, the first electrode, the second electrode, and the air pump.

[0036] Furthermore, the line connecting the first electrode and the second electrode is perpendicular to the emission direction of the light source, and the first electrode and the second electrode are respectively located at both ends of the axis of the light source.

[0037] Furthermore, it also includes a main body, to which the detection chamber, the processing module, and the air pump are connected;

[0038] The air inlet of the main body is connected to an extended suction pipe;

[0039] An air filter is connected to the air inlet of the main body;

[0040] The main body is connected to a flow meter, which is used to acquire flow data and is electrically connected to the processing module.

[0041] The processing module also includes a storage unit. When the gas to be tested is ionized by light of a first energy value, the ionized gas to be tested is captured to obtain a first current signal data. When the gas to be tested is ionized by light of a second energy value, the ionized gas to be tested is captured to obtain a second current signal data. When the light source is off, a third current signal data is obtained. The processing module uses the first and third current signal data as noise data to remove noise from the second current signal data to obtain a fourth current signal data. The concentration of butene-like substances is calculated based on the fourth current signal data and preset data in the storage unit. The module also compares the preset data in the storage unit to determine whether gasoline is leaking or converts the gasoline volatile concentration based on the preset data. The processing module is connected to an alarm light for alarming when the data exceeds the standard.

[0042] The first electrode is disposed on the insulating frame, which is spiral in shape.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] It can acquire multiple sets of noise data, denoise the original data based on the noise data, and the light source does not shine directly on the electrode to reduce errors. In addition, the noise data without light source, combined with the spiral insulating frame, greatly reduces the interference of water vapor in the detection environment and improves the detection accuracy.

[0045] By making the analyte move relative to light, ionization is made easier, the response speed is faster, and the detection efficiency is improved. Attached Figure Description

[0046] Figure 1 This is a flowchart of a gasoline leak detection method based on the concentration detection of butene-based substances according to the present invention.

[0047] Figure 2 This is a schematic diagram of the detection chamber of a gasoline leak detection device based on the concentration detection of butene-based substances according to the present invention.

[0048] Figure 3 This is a schematic diagram of the main body of a gasoline leak detection device based on the concentration detection of butene-based substances according to the present invention.

[0049] Figure 4 This is a schematic diagram of the insulating frame of a gasoline leak detection device based on the concentration detection of butene-based substances according to the present invention.

[0050] In the diagram: 1. Detection chamber; 2. Light source; 4. First electrode; 5. Second electrode; 6. Main body; 7. Air pump; 8. Air filter; 9. Extended suction pipe; 10. Insulation frame. Detailed Implementation

[0051] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0052] like Figure 1-4 The method for detecting gasoline leaks based on the concentration of butene-based substances, as shown, includes the following steps:

[0053] Step 1: Inhale the gas to be tested;

[0054] Step 2: Align the direction of gas movement with the direction of light source emission;

[0055] The shortest connection path between the structural surfaces of the first electrode and the second electrode must pass through the insulating frame at least once;

[0056] Step 3 involves ionizing the gas to be tested by irradiating it with light, capturing the ionized state of the gas to be tested, and obtaining current signal data.

[0057] Step 4: Obtain the concentration of butene-like substances based on the current signal data, and compare it with the preset data to determine whether gasoline is leaking or to calculate the concentration of gasoline volatiles.

[0058] Step 1 includes the following steps:

[0059] An air filter is installed in the air duct that draws in the gas to be tested to filter out particles.

[0060] A gas flow meter is installed in the air duct that draws in the gas to be tested to obtain flow data;

[0061] Turn on the air pump to draw in the gas to be tested.

[0062] Step 1 further includes the following steps:

[0063] Extend the distance to the gas inlet of the test gas by installing an extended suction tube at the gas inlet of the test gas.

[0064] Specifically, step 2, which involves ensuring that the shortest connection path between the structural surfaces of the first electrode and the second electrode passes through the insulating frame at least once, includes the following steps:

[0065] The shortest connection path between the structural surfaces of the first electrode and the second electrode passes through at least a spiral insulating frame. When the number of first electrodes is greater than 1, multiple first electrodes are connected in series on the insulating frame.

[0066] Specifically, step 3 is as follows:

[0067] The gas to be tested is ionized by irradiating it with light of the first energy value, and the ionized gas to be tested is captured to obtain the first current signal data.

[0068] The gas to be tested is ionized by irradiating it with light of the second energy value, and the ionized gas to be tested is captured to obtain the second current signal data.

[0069] The first current signal data and the second current signal data are amplified.

[0070] Step 3 includes the following steps:

[0071] Obtain the third current signal data when the light source is off;

[0072] The third current signal data is amplified.

[0073] Step 4 includes the following steps:

[0074] Using the first and third current signal data as noise data, the second current signal data is noise-removed to obtain the fourth current signal data. The concentration of butene-like substances is obtained based on the fourth current signal data, and compared with preset data to determine whether gasoline is leaking or to calculate the concentration of gasoline volatiles based on the preset data.

[0075] According to another aspect of the present invention, a gasoline leak detection device based on butene concentration detection is provided, comprising:

[0076] Testing chamber 1, wherein the testing chamber 1 has walls;

[0077] Light source 2, which is located inside the detection chamber 1;

[0078] Air pump 7, which is used to draw the air to be tested into the detection chamber 1, and the emission direction of the light source 2 is parallel to the air intake direction;

[0079] First electrode 4, the first electrode 4 is located in the gas chamber;

[0080] The second electrode 5 is located in the gas chamber;

[0081] The first electrode 4 or the second electrode 5 is connected to the wall via an insulating frame 10.

[0082] The processing module is connected to the light source 2, the first electrode 4, the second electrode 5, and the air pump 7.

[0083] The line connecting the first electrode 4 and the second electrode 5 is perpendicular to the emission direction of the light source 2, and the first electrode 4 and the second electrode 5 are respectively located at both ends of the axis of the light source 2.

[0084] It also includes a main body 6, and the detection chamber 1, the processing module and the air pump 7 are connected to the main body 6;

[0085] The air inlet of the main body 6 is connected to an extended suction pipe 9;

[0086] An air filter 8 is connected to the air inlet of the main body 6;

[0087] The main body 6 is connected to a flow meter, which is used to acquire flow data and is electrically connected to the processing module.

[0088] The processing module also includes a storage unit. When the gas to be tested is ionized by light of a first energy value, the ionized gas to be tested is captured to obtain a first current signal data. When the gas to be tested is ionized by light of a second energy value, the ionized gas to be tested is captured to obtain a second current signal data. When the light source 2 is turned off, a third current signal data is obtained. The processing module uses the first and third current signal data as noise data to remove noise from the second current signal data to obtain a fourth current signal data. The concentration of butene-like substances is calculated based on the fourth current signal data and preset data in the storage unit. The module also compares the preset data in the storage unit to determine whether gasoline is leaking or converts the gasoline volatile concentration based on the preset data. The processing module is connected to an alarm light for alarming when the data exceeds the standard.

[0089] The first electrode 4 is disposed on the insulating frame 10, which is spiral in shape.

[0090] This application can acquire multiple sets of noise data, denoise the original data based on the noise data, and the light source does not directly shine on the electrode to reduce errors. In addition, the noise data without light source, combined with the spiral insulating frame, greatly reduces the interference of water vapor in the detection environment and improves the detection accuracy.

[0091] By making the substance to be tested move relative to light, ionization is made easier, the response speed is faster, and the detection efficiency is improved.

[0092] Setting up a long-tube air intake can be used for chassis gasoline testing.

[0093] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting gasoline leaks based on the concentration detection of butene-like substances, characterized in that, Includes the following steps: Step 1: Inhale the gas to be tested; extend the distance of the gas inlet to be tested by setting an extended inlet tube. Step 2: Make the direction of gas movement parallel to the emission direction of the light source; the light source is located in the detection chamber; the first electrode is located in the detection chamber, and the second electrode is located in the detection chamber; the first electrode or the second electrode is connected to the wall of the detection chamber through an insulating frame; the line connecting the first electrode and the second electrode is perpendicular to the emission direction of the light source, and the first electrode and the second electrode are respectively located at both ends of the axis of the light source; The shortest connection path between the structural surfaces of the first electrode and the second electrode passes through at least a spiral insulating frame; when the number of first electrodes is greater than 1, multiple first electrodes are connected in series on the insulating frame. Step 3: Ionize the gas to be tested by irradiating it with light, capture the ionized gas to be tested, and obtain current signal data; specifically, ionize the gas to be tested by irradiating it with light of a first energy value, capture the ionized gas to be tested, and obtain the first current signal data. The gas to be tested is ionized by irradiating it with light of the second energy value, and the ionized gas to be tested is captured to obtain the second current signal data. Amplify the first current signal data and the second current signal data; Obtain the third current signal data when the light source is off; Amplify the third current signal data; Step 4: Obtain the concentration of butene based on the current signal data, compare it with the preset data to determine whether gasoline is leaking or to calculate the concentration of gasoline volatiles; use the first and third current signal data as noise data, remove noise from the second current signal data to obtain the fourth current signal data, obtain the concentration of butene based on the fourth current signal data, compare it with the preset data to determine whether gasoline is leaking or to calculate the concentration of gasoline volatiles based on the preset data.

2. The gasoline leak detection method based on butene concentration detection according to claim 1, characterized in that, Step 1 includes the following steps: An air filter is installed in the air duct that draws in the gas to be tested to filter out particles. A gas flow meter is installed in the air duct that draws in the gas to be tested to obtain flow data; Turn on the air pump to draw in the gas to be tested.

3. A gasoline leak detection device based on the concentration detection of butene-based substances, characterized in that, include: The testing chamber has walls; A light source, located within the detection chamber; An air pump is used to draw the gas to be tested into the detection chamber, and the emission direction of the light source is parallel to the air intake direction. A first electrode is located within the detection chamber; The second electrode is located in the detection chamber; The first electrode or the second electrode is connected to the wall via an insulating frame; The processing module is connected to the light source, the first electrode, the second electrode, and the air pump. It also includes a main body, to which the detection chamber, the processing module and the air pump are connected; The air inlet of the main body is connected to an extended suction pipe; An air filter is connected to the air inlet of the main body; The main body is connected to a flow meter, which is used to acquire flow data and is electrically connected to the processing module. The processing module also includes a storage unit. When the gas to be tested is ionized by light of a first energy value, the ionized gas to be tested is captured to obtain a first current signal data. When the gas to be tested is ionized by light of a second energy value, the ionized gas to be tested is captured to obtain a second current signal data. When the light source is off, a third current signal data is obtained. The processing module uses the first and third current signal data as noise data to remove noise from the second current signal data to obtain a fourth current signal data. The concentration of butene-like substances is calculated based on the fourth current signal data and preset data in the storage unit. The module also compares the preset data in the storage unit to determine whether gasoline is leaking or converts the gasoline volatile concentration based on the preset data. The processing module is connected to an alarm light for alarming when the data exceeds the standard. The first electrode is disposed on the insulating frame, which is spiral in shape; the line connecting the first electrode and the second electrode is perpendicular to the emission direction of the light source, and the first electrode and the second electrode are respectively disposed at both ends of the axis of the light source.

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