Black smoke generation control method and device for Ringelmann blackness detection equipment

Abstract

The invention provides a black smoke generation control method for Ringelmann blackness detection equipment, and relates to the field of environment monitoring. Comprising the following steps: acquiring a to-be-calibrated Ringelmann blackness sub-grade, and configuring the concentration of black smoke simulation liquid based on the to-be-calibrated Ringelmann blackness sub-grade and a total grade; matching the Ringelmann blackness sub-grade to be calibrated with reference grades in the first grade set and the second grade set respectively; if the Ringelmann blackness sub-grade to be calibrated is matched with any reference grade in the corresponding grade set, the black smoke simulation liquid is controlled to enter the corresponding generation sub-device, and the corresponding generation sub-device is started to generate black smoke with the corresponding concentration; and obtaining the gray whiteness ratio of the black smoke with the first concentration or the second concentration detected by the camera, and adjusting the first generation sub-device or the second generation sub-device based on the gray whiteness ratio. According to the method, black smoke with the corresponding concentration is generated by configuring the concentration of black smoke simulation liquid and selecting a proper generation sub-device, and adjustment is performed according to the grey whiteness proportion, so that accurate calibration of Ringelmann blackness detection equipment is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental monitoring, and specifically provides a method and device for controlling the generation of black smoke for a Ringelmann blackness detection device. Background Art

[0002] In the current fields of environmental monitoring and vehicle detection, Ringelmann blackness detection devices are widely used to detect the black smoke concentration in the exhaust gas emitted by fuel vehicles. The Ringelmann blackness detection device quantifies the proportion of gray-white degree of black smoke through image analysis technology to evaluate whether the exhaust gas emission meets the environmental protection standards. However, in related technologies, the calibration of the Ringelmann blackness detection device mainly relies on a standard blackness plate for metrological calibration. The grid pattern of black lines on the standard blackness plate cannot accurately simulate the actual diffusion state of black smoke in the air, resulting in a large error in the calibration process and affecting the accuracy and reliability of the detection device. Summary of the Invention

[0003] To solve the deficiencies of the prior art, the purpose of this application is to provide a method and device for controlling the generation of black smoke for a Ringelmann blackness detection device, and this method can achieve precise calibration of the Ringelmann blackness detection device.

[0004] In a first aspect, this application provides a method for controlling the generation of black smoke for a Ringelmann blackness detection device. This method is applied to a black smoke generation device, and the black smoke generation device is a part of the Ringelmann blackness detection device. The method includes: Obtain the sub-level of Ringelmann blackness to be calibrated, and configure the concentration of the black smoke simulation liquid based on the sub-level of Ringelmann blackness to be calibrated and the total level of Ringelmann blackness to be calibrated; Match the sub-level of Ringelmann blackness to be calibrated with the reference levels in the first level set and the second level set respectively; If the sub-level of Ringelmann blackness to be calibrated matches any first reference level in the first level set, control the black smoke simulation liquid to enter the first generation sub-device, and start the first generation sub-device to generate black smoke with a first concentration; if the sub-level of Ringelmann blackness to be calibrated matches any second reference level in the second level set, control the black smoke simulation liquid to enter the second generation sub-device, and start the second generation sub-device to generate black smoke with a second concentration; Obtain the camera used for comparing with the Ringelmann blackness plate and the proportion of gray-white degree of the detected black smoke with the first concentration or the second concentration, and adjust the corresponding first generation sub-device or second generation sub-device based on the proportion of gray-white degree.

[0005] In one embodiment, the first generation sub-device and the second generation sub-device respectively execute different black smoke generation modes; the concentration of the first concentration black smoke generated by the black smoke generation mode executed by the first generation sub-device is lower than the concentration of the second concentration black smoke generated by the black smoke generation mode executed by the second generation sub-device.

[0006] In one embodiment, adjusting the first generation sub-device or the second generation sub-device based on the grayness ratio includes: Based on the grayness ratio and the sub-level of the Ringelmann blackness to be calibrated, adjusting the power of the first generation sub-device and the flow rate of the black smoke simulation liquid entering the first generation sub-device to change the concentration of the first concentration black smoke; and / or, Based on the grayness ratio and the sub-level of the Ringelmann blackness to be calibrated, adjusting the flow rate of the auxiliary gas in the second generation sub-device and the flow rate of the black smoke simulation liquid entering the second generation sub-device to change the concentration of the second concentration black smoke.

[0007] In one embodiment, the first reference levels in the first level set are all less than the second reference levels in the second level set; the number of the first reference levels in the first level set is less than the number of the second reference levels in the second level set.

[0008] In one embodiment, configuring the black smoke simulation liquid based on the sub-level of the Ringelmann blackness to be calibrated and the total level of the Ringelmann blackness to be calibrated includes: The total level of the Ringelmann blackness to be calibrated includes a plurality of sub-levels of the Ringelmann blackness to be calibrated. The reference level in the total level of the Ringelmann blackness to be calibrated is one of the sub-levels of the plurality of sub-levels of the Ringelmann blackness to be calibrated, and the sub-levels in the total level of the Ringelmann blackness to be calibrated cover the blackness levels that the Ringelmann blackness detection device can detect; Determine whether the sub-level of the Ringelmann blackness to be calibrated is the reference level in the total level of the Ringelmann blackness to be calibrated; If not, determine the offset position of the sub-level of the Ringelmann blackness to be calibrated relative to the reference level; Configure the black smoke simulation liquid based on the offset position.

[0009] In a second aspect, the present application further provides a black smoke generation device for a Ringelmann blackness detection device. The black smoke generation device is a part of the Ringelmann blackness detection device, and the device includes: A first generation sub-device for generating black smoke of a first concentration; A second generation sub-device for generating black smoke of a second concentration; wherein, the first generation sub-device and the second generation sub-device do not work simultaneously; The first pump valve group is respectively connected to the first generation sub-device and the second generation sub-device, and is used to send the configured black smoke simulation liquid into the first generation sub-device or the second generation sub-device so that the first generation sub-device or the second generation sub-device generates black smoke with corresponding concentrations; The control unit is used to execute the black smoke generation control method for the Ringelmann blackness detection device in the first aspect.

[0010] In one embodiment, the black smoke generation device further includes a solution mixing sub-device. The solution mixing sub-device includes a plurality of first containers for placing different base liquids, a second container for placing the black smoke simulation liquid, and a second pump valve group; Among them, the plurality of first containers are connected to the second container through the second pump valve group, and the second container is connected to the first pump valve group; by adjusting the flow parameters of the second pump valve group, the concentration of the black smoke simulation liquid in the second container is changed.

[0011] In one embodiment, the solution mixing sub-device further includes a refractometer, which acts on the second container to obtain the concentration of the black smoke simulation liquid. The control unit is used to adjust the flow parameters of the second pump valve group based on the concentration obtained by the refractometer to change the proportion of different base liquids in the second container; Among them, the solution mixing sub-device includes at least three first containers for placing corresponding base liquids. The concentration of one of the different base liquids can be determined by the refractometer, and the concentration of this base liquid is related to the sub-level of the Ringelmann blackness to be calibrated.

[0012] In one embodiment, the black smoke generation device further includes a self-cleaning sub-device. The self-cleaning sub-device includes a cleaning tank and an air compressor. The first pump valve group is a gas-liquid pump valve group, and both the cleaning tank and the air compressor are connected to the first valve group; Among them, the liquid pump in the first pump valve group can extract the water source in the cleaning tank to clean the pipelines in the first generation sub-device and the second generation sub-device; after cleaning the pipelines in the first generation sub-device and the second generation sub-device, the air compressor can perform pulse back blowing on the pipelines in the first generation sub-device and the second generation sub-device through the gas pump in the first pump valve group.

[0013] In one embodiment, the first generation sub-device converts the black smoke simulation liquid into liquid droplets through a high-frequency piezoelectric ceramic array, and converts the liquid droplets into black smoke with a first concentration through the nozzle in the first generation sub-device; the second generation sub-device converts the black smoke simulation liquid into liquid droplets through a Venturi tube based on the Bernoulli effect, and converts the liquid droplets into black smoke with a second concentration through the nozzle in the second generation sub-device; Among them, the solution mixing sub-device further includes a heating module, and the heating module is at least located at the bottom of the second container. A stirrer is provided in the second container, and the heating module heats at least when the stirrer is working, and controls the temperature in the second container within a target range.

[0014] The above-mentioned black smoke generation method and device for a Ringelmann blackness detection device includes: obtaining a Ringelmann blackness sub-level to be calibrated, and configuring the concentration of a black smoke simulation liquid based on the Ringelmann blackness sub-level to be calibrated and the Ringelmann blackness total level to be calibrated. The Ringelmann blackness sub-level to be calibrated is matched with a reference level in a first level set and a second level set, respectively. If the Ringelmann blackness sub-level to be calibrated matches a first reference level in the first level set, the black smoke simulation liquid is controlled to enter a first generation sub-device and the first generation sub-device is activated to produce a first concentration of black smoke; if the Ringelmann blackness sub-level to be calibrated matches a second reference level in the second level set, the black smoke simulation liquid is controlled to enter a second generation sub-device and the second generation sub-device is activated to produce a second concentration of black smoke. The gray-white ratio of the first or second concentration of black smoke detected by a camera used for Ringelmann blackness plate comparison is obtained. If the gray-white ratio of the first or second concentration is inconsistent with the standard gray-white ratio, the relevant parameters of the corresponding first or second generation sub-device are adjusted based on this gray-white ratio to achieve the standard gray-white ratio. This method achieves precise calibration of the Ringelmann blackness detection equipment by configuring the concentration of black smoke simulating liquid and selecting an appropriate generation sub-device to generate black smoke of the corresponding concentration, and adjusting the parameters based on the gray-white ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a flow chart of a black smoke generation control method for a Ringelmann blackness detection device in one embodiment; Figure 2 A flow chart of configuring a black smoke simulating liquid based on a Ringelmann blackness sub-level to be calibrated and a Ringelmann blackness total level to be calibrated in one embodiment; Figure 3 This is an electrical connection diagram of a black smoke generating device in one embodiment; Figure 4 This is a pipe connection diagram of a black smoke generating device in one embodiment; Figure 5 This is a pipeline connection diagram of a black smoke generating device in another embodiment. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of this application more clear, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms involved in this application should have the general meaning understood by people with ordinary skills in the technical field to which this application belongs.

[0017] In one embodiment, Figure 1As shown, a method for controlling the generation of black smoke for a Ringelmann blackness detection device is provided. This method is applied to a black smoke generation device, which is a part of the Ringelmann blackness detection device. The method includes the following steps: Step 101: Obtain the sub-level of the Ringelmann blackness to be calibrated. Based on the sub-level of the Ringelmann blackness to be calibrated and the total level of the Ringelmann blackness to be calibrated, configure the concentration of the black smoke simulation liquid.

[0018] Specifically, determine the range of the total level of the Ringelmann blackness to be calibrated. For example, the total level of the Ringelmann blackness to be calibrated is from level 1 to level 5. Each sub-level of the Ringelmann blackness to be calibrated in the total level of the Ringelmann blackness to be calibrated corresponds to a different concentration range of the black smoke simulation liquid. The black smoke simulation liquid corresponding to the range of the total level of the Ringelmann blackness to be calibrated can be 5% - 30%. Further, obtain the specific sub-level of the Ringelmann blackness to be calibrated, assumed to be level 3. The concentration range of the black smoke simulation liquid corresponding to level 3 is 15% - 20%. According to this corresponding concentration range of the black smoke simulation liquid, configure the corresponding concentration of the black smoke simulation liquid.

[0019] Exemplarily, if the total level of the Ringelmann blackness to be calibrated is from 1 to 10 levels, the black smoke simulation liquid corresponding to the range of the total level of the Ringelmann blackness to be calibrated can be 5% - 55%. The sub-level to be calibrated is level 7, and the corresponding concentration of the black smoke simulation liquid is 35% - 40%. Configure the black smoke simulation liquid according to this concentration range.

[0020] Step 102: Match the sub-level of the Ringelmann blackness to be calibrated with the reference levels in the first level set and the second level set respectively.

[0021] Specifically, the first level set and the second level set can be two different reference level sets preset according to the range of the total level of the Ringelmann blackness. The first level set can include reference levels with lower concentrations, such as level 1, level 2, and level 3. The second level set can include reference levels with higher concentrations, such as level 4 and level 5. The division of the two level sets can be based on the difference in black smoke concentration. The first reference level in the first level set can correspond to black smoke with a lower concentration, and the second reference level in the second level set can correspond to black smoke with a higher concentration.

[0022] Exemplarily, the first reference levels included in the first level set are level 1, level 2, and level 3; the second reference levels included in the second level set are level 4 and level 5. If the sub-level of the Ringelmann blackness to be calibrated is level 3, the sub-level of the Ringelmann blackness to be calibrated is matched with the first reference levels in the first level set, and since the first reference level of level 3 is included in the first level set, it is determined that the sub-level of the Ringelmann blackness to be calibrated belongs to the first level set; similarly, if the sub-level to be calibrated is level 5, the sub-level of the Ringelmann blackness to be calibrated is matched with the second reference levels in the second level set, and since the second reference level of level 5 is in the second level set, it is thus determined that the sub-level of the Ringelmann blackness to be calibrated belongs to the second level set.

[0023] Step 103: If the sub-level of the Ringelmann blackness to be calibrated matches any of the first reference levels in the first level set, control the black smoke simulation liquid to enter the first generating sub-device, and start the first generating sub-device to generate black smoke of the first concentration; if the sub-level of the Ringelmann blackness to be calibrated matches any of the second reference levels in the second level set, control the black smoke simulation liquid to enter the second generating sub-device, and start the second generating sub-device to generate black smoke of the second concentration.

[0024] If the sub-level of the Ringelmann blackness to be calibrated matches any of the first reference levels (such as level 1, level 2, level 3) in the first level set, then the sub-level of the Ringelmann blackness to be calibrated belongs to the first level set. The black smoke generating device can control the black smoke simulation liquid to enter the first generating sub-device. The first generating sub-device can utilize ultrasonic atomization technology to generate uniform vaporized droplets through a high-frequency piezoelectric ceramic array to form an air curtain. The industrial camera identifies the proportion of gray and white in the image, and correspondingly adjusts the power of the high-frequency piezoelectric ceramic array and the flow rate of the liquid pump, thereby generating black smoke of the first concentration.

[0025] If the sub-level of the Ringelmann blackness to be calibrated matches any of the second reference levels (such as level 4, level 5) in the second level set, then the sub-level of the Ringelmann blackness to be calibrated belongs to the second level set. The black smoke generating device controls the black smoke simulation liquid to enter the second generating sub-device. The second generating sub-device is based on the aerosol injection principle, and utilizes the Bernoulli effect to make the sheath gas generate negative pressure through the Venturi tube structure, suck in and atomize the black smoke simulation liquid to form vaporized droplets, and uses the industrial camera to identify the proportion of gray and white and feedback to control the flow rate of the sheath gas flow and the flow rate of the liquid pump, and then generates black smoke of the second concentration.

[0026] Step 104: Obtain the camera used for comparing with the Ringelmann blackness plate, and the proportion of gray and white of the detected black smoke of the first concentration or the second concentration, and adjust the corresponding first generating sub-device or second generating sub-device based on the proportion of gray and white.

[0027] When the first generating sub-device generates black smoke of the first concentration or the second generating sub-device generates black smoke of the second concentration, the camera can detect the gray scale ratio of the black smoke of the first concentration or the second concentration. Based on the detected gray scale ratio of the black smoke of the first concentration or the second concentration, the first generating sub-device or the second generating sub-device can automatically adjust the relevant parameters of the corresponding generating sub-device to ensure that the black smoke concentration generated by the corresponding generating sub-device reaches the standard gray scale ratio. Among them, the camera is part of the Ringelmann blackness detection device.

[0028] For the first generating sub-device, when it is detected that the gray scale ratio of the black smoke of the first concentration is inconsistent with the standard gray scale ratio of the black smoke of the first concentration, the power of the high-frequency piezoelectric ceramic array in the ultrasonic atomization unit and the flow rate of the liquid pump in the gas-liquid pump valve group are adjusted accordingly. The atomization effect of the black smoke simulation liquid and the thickness of the air curtain are changed, and then the concentration of the black smoke is adjusted to make it reach the standard gray scale ratio of the first concentration.

[0029] For the second generating sub-device, if it is detected that the gray scale ratio of the black smoke of the second concentration is inconsistent with the standard gray scale ratio of the black smoke of the second concentration, the sheath gas flow rate and the flow rate of the liquid pump in the aerosol injection unit are adjusted to change the atomization effect of the black smoke simulation liquid and the thickness of the air curtain, and then the concentration of the black smoke is adjusted to make it reach the standard gray scale ratio of the black smoke of the second concentration.

[0030] In this embodiment, the method includes: obtaining the sub-level of the Ringelmann blackness to be calibrated, and configuring the concentration of the black smoke simulation liquid according to the sub-level of the Ringelmann blackness to be calibrated and the total level of the Ringelmann blackness to be calibrated. Matching the sub-level of the Ringelmann blackness to be calibrated with the reference levels in the first level set and the second level set respectively. If the sub-level of the Ringelmann blackness to be calibrated matches a certain first reference level in the first level set, then control the black smoke simulation liquid to enter the first generating sub-device and start the first generating sub-device to generate black smoke of the first concentration; if the sub-level of the Ringelmann blackness to be calibrated matches a certain second reference level in the second level set, then control the black smoke simulation liquid to enter the second generating sub-device and start the second generating sub-device to generate black smoke of the second concentration. Obtain the gray scale ratio of the black smoke of the first concentration or the second concentration detected by the camera. If the gray scale ratio of the first concentration or the second concentration is inconsistent with the standard gray scale ratio, adjust the relevant parameters of the corresponding first generating sub-device or second generating sub-device according to this gray scale ratio to make it reach the standard gray scale ratio. This method realizes the precise calibration of the Ringelmann blackness detection device by configuring the concentration of the black smoke simulation liquid, selecting the appropriate generating sub-device to generate black smoke of the corresponding concentration, and adjusting according to the gray scale ratio.

[0031] In one embodiment, the first generating sub-device and the second generating sub-device respectively execute different black smoke generation modes; the first concentration of black smoke generated by the black smoke generation mode executed by the first generating sub-device is lower than the second concentration of black smoke generated by the black smoke generation mode executed by the second generating sub-device.

[0032] Specifically, if the sub-level of Ringelmann blackness to be calibrated matches any first reference level (such as level 1, level 2, level 3) in the first level set, then the sub-level of Ringelmann blackness to be calibrated belongs to the first level set. The black smoke generating device can control the black smoke simulation liquid to enter the first generating sub-device, and the first generating sub-device can adopt the ultrasonic atomization mode. The ultrasonic atomization mode can atomize the black smoke simulation liquid into uniform droplets of 2-10 microns through a high-frequency piezoelectric ceramic array, and then form an air curtain through an annular array nozzle. The industrial camera identifies the proportion of gray and white in the image, and correspondingly adjusts the power of the high-frequency piezoelectric ceramic array and the flow rate of the liquid pump, so as to generate black smoke with the first concentration.

[0033] If the sub-level of Ringelmann blackness to be calibrated matches any second reference level (such as level 4, level 5) in the second level set, then the sub-level of Ringelmann blackness to be calibrated belongs to the second level set. The black smoke generating device controls the black smoke simulation liquid to enter the second generating sub-device, and uses the aerosol injection mode. Utilizing the Bernoulli effect, a negative pressure is generated in the sheath gas through the Venturi tube structure, sucking in and atomizing the black smoke simulation liquid into uniform droplets of 10-50 microns. The industrial camera identifies the proportion of gray and white and feedback-controls the flow rate of the sheath gas flow and the flow rate of the liquid pump, thereby generating black smoke with the second concentration.

[0034] The second concentration of black smoke is determined by the following formula: ; Wherein, is the aerosol injection coefficient, generally 0.6-0.9; is the air pressure difference generated by the sheath gas; is the nozzle diameter, generally 0.1-0.5 mm ; is the concentration of the black smoke simulation liquid; is the density of the black smoke simulation liquid.

[0035] It should be noted that the first generating sub-device uses ultrasonic atomization technology to atomize the black smoke simulation liquid into smaller droplets to form an air curtain, generating the first concentration of black smoke with a lower concentration; the second generating sub-device is based on the aerosol injection principle, and the black smoke simulation liquid is sucked in and atomized into larger droplets under negative pressure through the Bernoulli effect, generating the second concentration of black smoke with a higher concentration. Therefore, the concentration of black smoke generated by the first generating sub-device is lower than that generated by the second generating sub-device.

[0036] In one embodiment, adjusting the first generating sub-device based on the gray-white ratio includes: adjusting the power of the first generating sub-device and the flow rate of the black smoke simulation liquid entering the first generating sub-device based on the gray-white ratio and the sub-level of the Ringelmann blackness to be calibrated, so as to change the concentration of the first-concentration black smoke.

[0037] Specifically, after the gray-white ratio of the first-concentration black smoke is detected by the camera, compare the detection result of the gray-white ratio of the first-concentration black smoke with the standard gray-white ratio required by the sub-level of the Ringelmann blackness to be calibrated. If the detected gray-white ratio is inconsistent with the required standard gray-white ratio, adjust the power parameter in the first generating sub-device (such as adjusting the power of the high-frequency piezoelectric ceramic array) accordingly, and change the flow rate of the black smoke simulation liquid entering the first generating sub-device (realized by controlling the flow rate of the liquid pump). It should be noted that the power adjustment of the first generating sub-device can affect the atomization effect of the black smoke simulation liquid, and the flow rate adjustment of the first generating sub-device can change the amount of liquid entering the atomization unit. The two work together to change the concentration of the first-concentration black smoke, making it closer to the standard concentration required by the sub-level of the Ringelmann blackness to be calibrated.

[0038] In one embodiment, adjusting the second generating sub-device based on the gray-white ratio includes: adjusting the flow rate of the auxiliary gas in the second generating sub-device and the flow rate of the black smoke simulation liquid entering the second generating sub-device based on the gray-white ratio and the sub-level of the Ringelmann blackness to be calibrated, so as to change the concentration of the second-concentration black smoke.

[0039] After the gray-white ratio of the second-concentration black smoke is detected by the camera, compare the detection result of the gray-white ratio of the second-concentration black smoke with the standard gray-white ratio required by the sub-level of the Ringelmann blackness to be calibrated. If the actually detected gray-white ratio does not match the standard gray-white ratio, adjust the flow rate of the auxiliary gas (such as sheath gas) in the second generating sub-device and adjust the flow rate of the black smoke simulation liquid entering the second generating sub-device (realized by controlling the flow rate of the liquid pump). It should be noted that changing the flow rate of the auxiliary gas can affect the negative pressure intensity generated by the Bernoulli effect, thereby changing the atomization effect of the black smoke simulation liquid; adjusting the flow rate of the black smoke simulation liquid entering the second generating sub-device can adjust the thickness of the air curtain and the concentration of the black smoke. Through the dual adjustment mechanism, the second generating sub-device can accurately change the concentration of the second-concentration black smoke, making it closer to the standard concentration required by the sub-level of the Ringelmann blackness to be calibrated, thus ensuring the accuracy of the calibration.

[0040] In one embodiment, the first reference levels in the first level set are all less than the second reference levels in the second level set; the number of the first reference levels in the first level set is less than the number of the second reference levels in the second level set.

[0041] Specifically, the first reference level in the first level set includes Ringelmann blackness levels 1, 2, and 3, and the second reference level in the second level set includes Ringelmann blackness levels 4 and 5. Therefore, any first reference level in the first level set is less than any second reference level in the second level set.

[0042] In terms of quantity, the first level set contains 3 reference levels, while the second level set contains 2 reference levels. So, the number of reference levels in the first level set is more than that in the second level set.

[0043] In this embodiment, by setting the levels and quantities of the first level set and the second level set, the black smoke generating device can perform precise calibration for different ranges and quantities of blackness levels respectively by using different generating sub-devices and atomization modes.

[0044] In one embodiment, as Figure 2 shown, based on the sub-level of the Ringelmann blackness to be calibrated and the total level of the Ringelmann blackness to be calibrated, configure the black smoke simulation liquid, including: Step 201: The total level of the Ringelmann blackness to be calibrated includes multiple sub-levels of the Ringelmann blackness to be calibrated. The reference level in the total level of the Ringelmann blackness to be calibrated is one of the sub-levels of the multiple sub-levels of the Ringelmann blackness to be calibrated, and the sub-levels in the total level of the Ringelmann blackness to be calibrated cover the blackness levels that the Ringelmann blackness detection device can detect.

[0045] Specifically, the sub-level of the Ringelmann blackness to be calibrated can represent different concentrations of black smoke levels. For example, the total level of the Ringelmann blackness to be calibrated can include Ringelmann blackness levels 1, 2, 3, 4, and 5, and each level corresponds to an independent sub-level of the Ringelmann blackness to be calibrated.

[0046] Among these sub-levels of the Ringelmann blackness to be calibrated, a specific sub-level of the Ringelmann blackness to be calibrated can be selected as the reference level for use as a benchmark or reference point in the calibration process. This reference level can be any sub-level of the Ringelmann blackness to be calibrated in the total level of the Ringelmann blackness to be calibrated, and together with other sub-levels of the Ringelmann blackness to be calibrated, they jointly cover all the blackness level ranges that the Ringelmann blackness detection device can detect.

[0047] Step 202: Determine whether the sub-level of the Ringelmann blackness to be calibrated is the reference level in the total level of the Ringelmann blackness to be calibrated.

[0048] Obtain the currently calibrated sub-level of the Ringelmann blackness and compare it with the reference level in the total level of the Ringelmann blackness to be calibrated. If the two are the same, then the currently calibrated sub-level is the reference level; if not, then the currently calibrated sub-level is not the reference level.

[0049] Step 203: If not, determine the offset position of the to-be-calibrated Ringelmann blackness sub-level relative to the reference level; configure the black smoke simulation liquid based on the offset position.

[0050] If the to-be-calibrated Ringelmann blackness sub-level is not the reference level, it is necessary to determine the offset position of the to-be-calibrated Ringelmann blackness sub-level relative to the reference level. For example, assume the reference level is level 3, and the to-be-calibrated sub-level is level 2, the offset position is -1; if it is level 4, the offset position is +1.

[0051] Based on the offset position, adjust the concentration of the black smoke simulation liquid. If the offset is negative (e.g., -1), it means the black smoke concentration needs to be reduced. On the contrary, a positive offset requires an increase in the black smoke concentration. After adjustment, verify the black smoke concentration again to ensure it meets the requirements of the to-be-calibrated level.

[0052] Based on the same concept, an embodiment of the present application also provides a black smoke generating device for a Ringelmann blackness detection device. The black smoke generating device is a part of the Ringelmann blackness detection device, and the device includes: The first generating sub-device 310: used to generate black smoke with a first concentration; The second generating sub-device 320: used to generate black smoke with a second concentration; wherein, the first generating sub-device 310 and the second generating sub-device 320 do not work simultaneously; The first pump valve group 330: respectively connected to the first generating sub-device 310 and the second generating sub-device 320, and used to send the configured black smoke simulation liquid into the first generating sub-device 310 or the second generating sub-device 320 so that the first generating sub-device 310 or the second generating sub-device 320 generates black smoke with a corresponding concentration; The control unit 340: used to execute the above-mentioned black smoke generation control method for the Ringelmann blackness detection device.

[0053] In one embodiment, as Figure 3 shown and Figure 4 shown, the electrical connection diagram of the black smoke generating device and the pipeline connection diagram of the black smoke generating device are presented. The black smoke generating device for the Ringelmann blackness detection device further includes a solution mixing sub-device 350. The solution mixing sub-device 350 includes a plurality of first containers 351 for placing different base liquids, a second container 352 for placing the black smoke simulation liquid, and a second pump valve group 353; wherein, the plurality of first containers 351 are connected to the second container 352 through the second pump valve group 353, and the second container 352 is connected to the first pump valve group 330; the concentration of the black smoke simulation liquid in the second container 352 is changed by adjusting the flow parameters of the second pump valve group 353.

[0054] In the solution mixing sub-device 350 of the black smoke generating device, there are multiple first containers 351, a second container 352, and a second pump valve group 353. The multiple first containers 351 are independent of each other and are used to store different types of base liquids, which may include ink, solvents (such as ethylene glycol), surfactants (such as polyvinylpyrrolidone), etc. Each first container 351 is connected to the second pump valve group 353 through a pipeline, and the second pump valve group 353 is connected to the second container 352. The function of the second container 352 is to store the finally mixed black smoke simulation liquid.

[0055] When a specific concentration of black smoke simulation liquid needs to be configured, the required base liquid and its proportion are determined according to the Ringelmann blackness level to be calibrated. By controlling the flow parameters of each pump and valve in the second pump valve group 353, the base liquids in different first containers 351 are transported to the second container 352 with precise flow rates. In the second container 352, the base liquids are fully mixed by a magnetic stirrer to form a uniform black smoke simulation liquid.

[0056] In this embodiment, the solution mixing sub-device 350 can flexibly adjust the composition and concentration of the black smoke simulation liquid to meet the calibration requirements of different Ringelmann blackness levels.

[0057] In one embodiment, the solution mixing sub-device 350 further includes a refractometer 354, which is used to obtain the concentration of the black smoke simulation liquid in the second container 352. The control unit 340 is used to adjust the flow parameters of the second pump valve group 353 based on the concentration obtained by the refractometer 354 to change the proportion of different base liquids in the second container 352; among them, there are at least three first containers 351 for placing corresponding base liquids in the solution mixing sub-device 350. The concentration of one of the different base liquids can be determined by the refractometer 354, and the concentration of this base liquid is related to the Ringelmann blackness sub-level to be calibrated.

[0058] The refractometer 354 is installed on the second container 352 to monitor the concentration of the black smoke simulation liquid in real time. After the refractometer 354 obtains the concentration data of the black smoke simulation liquid, it is transmitted to the control unit 340. The control unit 340 compares the preset concentration standard with the actually measured concentration value, automatically calculates and generates a regulation signal, which acts on the second pump valve group 353 to precisely adjust the flow parameters of each base liquid flowing into the second container 352, and realizes the precise control of the proportion of different base liquids in the second container 352.

[0059] It should be noted that the solution mixing sub-device 350 includes at least three first containers 351, which store corresponding base liquids respectively. The concentration of one of the base liquids (such as ink) can be measured by a refractometer 354, and this liquid concentration is directly related to the Ringelmann blackness sub-level to be calibrated. The other base liquids (such as solvents and activators) are proportioned as needed to synergistically adjust the final concentration of the black smoke simulation liquid to meet the calibration requirements of different Ringelmann blackness levels.

[0060] In one embodiment, the black smoke generating device further includes a self-cleaning sub-device 360. The self-cleaning sub-device 360 includes a cleaning tank 361 and an air compressor 362. The first pump valve group 330 is a gas-liquid pump valve group, and both the cleaning tank 361 and the air compressor 362 are connected to the first pump valve group 330. Among them, the liquid pump in the first pump valve group 330 can extract the water source in the cleaning tank 361 to clean the pipelines in the first generating sub-device 310 and the second generating sub-device 320. After cleaning the pipelines in the first generating sub-device 310 and the second generating sub-device 320, the air compressor 362 can perform pulse backwashing on the pipelines in the first generating sub-device 310 and the second generating sub-device 320 through the gas pump in the first pump valve group 330.

[0061] The self-cleaning sub-device 360 in the black smoke generating device includes a cleaning tank 361 and an air compressor 362, which are mainly used to clean and dry the pipelines of the first generating sub-device 310 and the second generating sub-device 320. The cleaning tank 361 is filled with pure water. When cleaning is required, the liquid pump in the first pump valve group 330 will extract the pure water in the cleaning tank 361, and then transport the pure water to the pipelines of the first generating sub-device 310 and the second generating sub-device 320 to thoroughly wash the pipelines to remove the possible residual black smoke simulation liquid or other impurities.

[0062] After completing the water washing step, the air compressor 362 starts to work. The air compressor 362 transports compressed air into the pipelines of the first generating sub-device 310 and the second generating sub-device 320 through the gas pump in the first pump valve group 330. The compressed air enters the pipelines in the form of pulses, which can effectively blow dry the water in the pipelines and further remove the possible residual impurities in the pipelines.

[0063] In this embodiment, the self-cleaning sub-device 360 can automatically clean and dry the pipelines after each calibration or black smoke generation task, thereby ensuring the long-term stable operation of the device and avoiding affecting the next calibration or black smoke generation effect due to pipeline blockage or residues.

[0064] In one embodiment, the first generating sub-device 310 converts the black smoke simulation liquid into droplets through a high-frequency piezoelectric ceramic array, and converts the droplets into black smoke of a first concentration through a nozzle in the first generating sub-device 310; the second generating sub-device 320 converts the black smoke simulation liquid into droplets through a Venturi tube based on the Bernoulli effect, and converts the droplets into black smoke of a second concentration through a nozzle in the second generating sub-device 320; wherein, the solution mixing sub-device 350 further includes a heating module, the heating module is at least located at the bottom of the second container 352, a stirrer is provided in the second container 352, and the heating module heats at least when the stirrer is working, and controls the temperature in the second container 352 within a target range.

[0065] The black smoke generating device includes a first generating sub-device 310 and a second generating sub-device 320, which are respectively responsible for generating black smoke of different concentrations. Among them, the first generating sub-device 310 uses a high-frequency piezoelectric ceramic array to convert the black smoke simulation liquid into droplets, and these droplets form an air curtain after being ejected through the nozzle in the device, which is the black smoke of the first concentration. The second generating sub-device 320 is based on the Bernoulli effect, uses a Venturi tube structure to convert the black smoke simulation liquid into droplets, and then ejects them through the nozzle to form black smoke of the second concentration.

[0066] In addition, the solution mixing sub-device 350 is also equipped with a heating module, and the heating module is at least installed at the bottom of the second container 352. A stirrer is provided inside the second container 352. When the stirrer operates, the heating module starts synchronously to heat the solution. Through the operation of the heating module, the temperature in the second container 352 can be maintained within a set target range, ensuring that the solution mixing process is carried out at an appropriate temperature to achieve an ideal mixing effect. Among them, the heating module and the stirrer are not shown in the figure.

[0067] In one embodiment, as Figure 5 shown, this figure shows the pipeline diagram of the black smoke generating device. The solution mixing sub-device 350 includes a plurality of first containers for storing basic liquids such as ink and solvents, and these first containers are connected to a second pump valve group through pipelines; the second pump valve group can be a flow / pump group, and the second pump valve group is composed of a plurality of pumps and valves, which is used to control the flow of the basic liquid and transport different liquids to the second container in proportion; the second container is a larger round container, which is equipped with a stirrer inside for mixing the basic liquid to form a black smoke simulation liquid, and a heating module is provided at the bottom thereof, which can heat during stirring to maintain a set temperature and ensure the mixing effect; the arrow indicates the flow direction of the liquid. Figure 5It also shows an ultrasonic generating device, an annular array nozzle, and a honeycomb outlet. These components are used to convert the black smoke simulation liquid into droplets and form black smoke. In addition, the self-cleaning device 360 further includes a cleaning tank and an air compressor. The cleaning liquid in the cleaning tank is pumped by the liquid pump in the first pump valve group. The first pump valve group can be a gas / liquid pump valve group for cleaning the pipelines in the first generating sub-device and the second generating sub-device. After cleaning, the air compressor blows pulsed reverse air into the pipelines through the gas pump in the first pump valve group to prevent nozzle blockage. Among them, the first generating sub-device can be an ultrasonic black smoke generating device, and the second generating sub-device can be a jet black smoke generating device.

[0068] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0069] The above embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method for controlling the generation of black smoke in a Ringelmann blackness detection device, characterized in that, The method is applied to a black smoke generating device, which is a part of the Ringelmann blackness detection equipment. The method includes: Obtaining a sub-level of Ringelmann blackness to be calibrated, and configuring the concentration of the black smoke simulation liquid based on the sub-level of Ringelmann blackness to be calibrated and the total level of Ringelmann blackness to be calibrated; Matching the sub-level of Ringelmann blackness to be calibrated with the reference levels in the first level set and the second level set respectively; If the sub-level of Ringelmann blackness to be calibrated matches any of the first reference levels in the first level set, controlling the black smoke simulation liquid to enter the first generating sub-device, and starting the first generating sub-device to generate black smoke with a first concentration; if the sub-level of Ringelmann blackness to be calibrated matches any of the second reference levels in the second level set, controlling the black smoke simulation liquid to enter the second generating sub-device, and starting the second generating sub-device to generate black smoke with a second concentration; Obtaining the camera for comparing with the Ringelmann blackness plate and the proportion of the gray-white degree of the detected black smoke with the first concentration or the second concentration, and adjusting the corresponding first generating sub-device or the second generating sub-device based on the proportion of the gray-white degree; 2. The black smoke generation control method for the Ringelmann blackness detection equipment according to claim 1, wherein The first generating sub-device and the second generating sub-device respectively execute different black smoke generation modes; the concentration of the black smoke with the first concentration generated by the black smoke generation mode executed by the first generating sub-device is lower than the concentration of the black smoke with the second concentration generated by the black smoke generation mode executed by the second generating sub-device; 3. The method for controlling the generation of black smoke for the Ringelmann blackness detection device according to claim 2, wherein Adjusting the first generating sub-device or the second generating sub-device based on the proportion of the gray-white degree includes: Adjusting the power of the first generating sub-device and the flow rate of the black smoke simulation liquid entering the first generating sub-device based on the proportion of the gray-white degree and the sub-level of Ringelmann blackness to be calibrated to change the concentration of the black smoke with the first concentration; and / or, Adjusting the flow rate of the auxiliary gas in the second generating sub-device and the flow rate of the black smoke simulation liquid entering the second generating sub-device based on the proportion of the gray-white degree and the sub-level of Ringelmann blackness to be calibrated to change the concentration of the black smoke with the second concentration; 4. The method for controlling the generation of black smoke for a Ringelmann blackness detection device according to claim 2, characterized in that, All the first reference levels in the first level set are less than the second reference levels in the second level set; the number of the first reference levels in the first level set is less than the number of the second reference levels in the second level set; 5. The method for controlling the generation of black smoke for a Ringelmann blackness detection device according to claim 2, wherein Configuring the black smoke simulation liquid based on the sub-level of Ringelmann blackness to be calibrated and the total level of Ringelmann blackness to be calibrated includes: The total level of Ringelmann blackness to be calibrated includes a plurality of sub-levels of Ringelmann blackness to be calibrated. The reference level in the total level of Ringelmann blackness to be calibrated is a sub-level among the plurality of sub-levels of Ringelmann blackness to be calibrated, and the sub-levels in the total level of Ringelmann blackness to be calibrated cover the blackness levels that the Ringelmann blackness detection equipment can detect; Determining whether the sub-level of Ringelmann blackness to be calibrated is the reference level in the total level of Ringelmann blackness to be calibrated; If not, determine the offset position of the to-be-calibrated Ringelmann blackness sub-level relative to the reference level; Configure the black smoke simulation liquid based on the offset position.

6. A black smoke generating device for a Ringelmann blackness detection device, characterized in that, The black smoke generating device is a part of the Ringelmann blackness detecting device, and the black smoke generating device includes: A first generating sub-device for generating black smoke with a first concentration; A second generating sub-device for generating black smoke with a second concentration; wherein, the first generating sub-device and the second generating sub-device do not work simultaneously; A first pump valve group respectively connected to the first generating sub-device and the second generating sub-device, for feeding the configured black smoke simulation liquid into the first generating sub-device or the second generating sub-device so that the first generating sub-device or the second generating sub-device generates black smoke with a corresponding concentration; A control unit; for executing the steps of the black smoke generation control method for the Ringelmann blackness detecting device according to any one of claims 1 to 5.

7. The black smoke generating device for Ringelmann blackness detection equipment according to claim 6, characterized in that, The black smoke generating device further includes a solution mixing sub-device, and the solution mixing sub-device includes a plurality of first containers for placing different base liquids, a second container for placing the black smoke simulation liquid, and a second pump valve group; Wherein, the plurality of first containers are connected to the second container through the second pump valve group, and the second container is connected to the first pump valve group; the concentration of the black smoke simulation liquid in the second container is changed by adjusting the flow parameters of the second pump valve group.

8. The black smoke generating device for a Ringelmann blackness detection device according to claim 7, characterized in that The solution mixing sub-device further includes a refractometer for obtaining the concentration of the black smoke simulation liquid in the second container, and the control unit is used to adjust the flow parameters of the second pump valve group based on the concentration obtained by the refractometer to change the proportion of the different base liquids in the second container; Wherein, at least three first containers for placing corresponding base liquids are included in the solution mixing sub-device, and the concentration of one of the different base liquids can be determined by the refractometer, and the concentration of this base liquid is related to the to-be-calibrated Ringelmann blackness sub-level.

9. The black smoke generating device for the Ringelmann blackness detection device according to claim 6, characterized in that, The black smoke generating device further includes a self-cleaning sub-device, and the self-cleaning sub-device includes a cleaning tank and an air compressor, and the first pump valve group is a gas-liquid pump valve group, and both the cleaning tank and the air compressor are connected to the first valve group; Wherein, the liquid pump in the first pump valve group can extract the water source in the cleaning tank to clean the pipelines in the first generating sub-device and the second generating sub-device; after cleaning the pipelines in the first generating sub-device and the second generating sub-device, the air compressor can perform pulse back blowing on the pipelines in the first generating sub-device and the second generating sub-device through the gas pump in the first pump valve group.

10. The black smoke generating device for a Ringelmann blackness detection device according to claim 7, wherein, The first generating sub-device converts the black smoke simulation liquid into droplets through a high-frequency piezoelectric ceramic array, and converts the droplets into the black smoke with the first concentration through a nozzle in the first generating sub-device; the second generating sub-device converts the black smoke simulation liquid into droplets through a Venturi tube based on the Bernoulli effect, and converts the droplets into the black smoke with the second concentration through a nozzle in the second generating sub-device; Wherein, the solution mixing sub-device further includes a heating module, the heating module is at least located at the bottom of the second container, a stirrer is provided in the second container, and the heating module heats at least when the stirrer is working, and the temperature in the second container is controlled within a target range.

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