CN114854435A - Method and device for checking whether furnace door is accurately aligned in coking operation process - Google Patents
Method and device for checking whether furnace door is accurately aligned in coking operation process Download PDFInfo
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Abstract
The invention discloses a method and a device for checking whether an oven door is accurately aligned in the coking operation process, wherein the method comprises the following steps: acquiring a plurality of images which are acquired simultaneously and contain two gaps between coke oven equipment or coal cakes and furnace walls on two sides of a furnace door; calculating to obtain a gap size detection value of two gaps between the coke oven equipment or the briquette and the oven walls on two sides of the oven door; calculating a difference value between the two gap size detection values, calculating a ratio of the difference value to the larger one of the two gap size detection values, and comparing the ratio with a preset ratio threshold; and if the ratio is less than or equal to a preset ratio threshold value, judging that the current coke oven equipment or coal cake is accurately aligned with the oven door. The invention replaces the naked eye estimation of human with the accurate measurement of the machine, and can provide accurate judgment for the accurate alignment of the oven door in the coking operation process, thereby ensuring the safety of the coking operation and avoiding the occurrence of production accidents.
Description
Technical Field
The application relates to the technical field of coking equipment, in particular to a method and a device for checking whether an oven door is accurately aligned in a coking operation process.
Background
When the coke oven vehicle carries out coke pushing, coal charging, coke guiding and other operations, the coke pushing rod, the coal cake and the coke guiding grid need to be accurately aligned with the oven opening, and once the alignment deviation is too large, the coke pushing rod, the coal cake and the coke guiding grid rub against the oven wall and even prop against the oven body, thereby possibly causing serious production accidents.
At present, the coke oven vehicle fire hole position alignment technology has a plurality of schemes, including various methods such as coded cable positioning, satellite positioning (such as GNSS + RTK), laser ranging positioning, electromagnetic induction embedded metal code bar positioning, correlation sensor detection photoelectric code plate positioning, oven frame optical characteristic image identification positioning, RFID label identification positioning and the like.
From the view point of automation control technology, the above methods have advantages and disadvantages, and belong to more mature technology, and many coke oven vehicles are also equipped with functions of positioning and displaying the position of the fire hole. However, from the used result, the effect is not ideal, the assumed distance from the result is large, positioning detection and display are realized, but the method is not suitable for use, basically, the acceptance date of the equipment is the termination date of the function of the equipment, the advanced automatic function of the "height" becomes a swinging and gimmick, and the alignment of the muzzle positions of coke pushing, coal charging and coke guiding still depends on a method for estimating the gap between the coke pushing rod, the coal cake and the coke guiding grid and the side wall of the hearth by naked eyes of a cart driver.
The reason for this is that the temperature of the hearth is very high, usually reaches more than one thousand ℃, and cannot be directly measured, all the methods are indirect measurement, and some methods are used for measuring the absolute position of a cart and positioning by using a table look-up comparison method; and some measure the relative distance between the cart and the furnace body fixed structural member or the preset positioning mark on the furnace body to position. Due to various reasons and factors such as geometric dimension deviation of the furnace body construction, shape and position error out-of-tolerance caused by improper maintenance of the furnace body, aging, sedimentation and progressive deformation of the furnace body, bending, twisting and abrasion of a cart track, inconsistent operation postures caused by deflection of cart running wheels and the like, the error between the detection position and the actual furnace mouth position is very large, and the errors occur randomly and cannot be detected periodically.
Therefore, the inventor recognizes that, in the current situation, no matter which technique is adopted in the alignment process, a means for directly and quantitatively detecting and verifying whether the feedback oven door is aligned is lacked before the coke pushing rod, the briquette and the coke guiding grid enter the oven door or before the coke pushing rod, the briquette and the coke guiding grid are evaluated by the naked eyes of a cart driver.
Disclosure of Invention
Therefore, in order to solve the technical problems, the method and the device for checking whether the oven door is accurately aligned in the coking operation process are provided, so that whether the oven door is aligned in the coking operation process can be directly checked.
In a first aspect, a method for verifying whether an oven door is accurately aligned during a coking operation includes:
acquiring a plurality of images which are simultaneously acquired and contain two gaps between coke oven equipment or coal cakes and oven walls on two sides of an oven door before the coke oven equipment or the coal cakes enter the oven door;
calculating to obtain a gap size measurement value of two gaps between the coke oven equipment or the briquette and the oven walls on two sides of the oven door according to the obtained images;
calculating a difference value between the two gap size measurement values, calculating a ratio of the difference value to the larger one of the two gap size measurement values, and comparing the ratio with a preset ratio threshold; and if the ratio is less than or equal to a preset ratio threshold value, judging that the current coke oven equipment or coal cake is accurately aligned with the oven door.
Optionally, the coke oven equipment is a coke pushing rod of a coke pushing car or a coke guiding grid of a coke barrier car, and the coal cake is conveyed into the oven door through a coal charging car.
Further optionally, the simultaneously acquired multiple images including two gaps between the coke oven equipment or the briquette and the oven wall at two sides of the oven door are acquired by respectively photographing the two gaps according to a preset number through two linear array cameras or two area array cameras; the two groups of linear array cameras or the two groups of area cameras are respectively arranged on the coke pusher, the coke guide or the coal charging car and are positioned in front of the two gaps.
Further optionally, the two groups of line cameras or the two groups of area cameras are two groups of line cameras or area cameras of the same model.
Further optionally, the second step specifically includes:
carrying out noise reduction treatment on the obtained multiple images containing two gaps between the coke oven equipment or the coal cake and the oven walls on two sides of the oven door, and filtering out unqualified images;
extracting a useful pixel area in each image obtained after the noise reduction and filtering operation according to preset characteristics, wherein the useful pixel area is a pixel area corresponding to the gap;
feature amplification is carried out on the extracted useful pixel regions, and according to a plurality of useful pixel regions corresponding to the two gaps respectively, a plurality of gap size data corresponding to the two gaps respectively are obtained through calculation;
and respectively calculating the average value of a plurality of gap size data corresponding to the two gaps as the gap size measured values of the two gaps.
Further optionally, the preset feature is an image color feature or an infrared feature.
Optionally, the third step further includes:
if the ratio is larger than the preset ratio threshold, judging that the current coke oven equipment or coal cake and the oven door are not accurately aligned, and sending an alarm prompt instruction to a control system of the corresponding coke oven vehicle to enable the control system of the corresponding coke oven vehicle to output a corresponding alarm prompt; the corresponding alarm prompt is output through a loudspeaker, a display screen or a buzzer of a control system of the corresponding coke oven vehicle; and sending a work pause instruction to the control system of the corresponding coke oven vehicle, so that the control system of the corresponding coke oven vehicle controls the corresponding coke oven vehicle to pause to advance towards the coke oven direction through the corresponding control signal.
Further optionally, the third step further includes:
when the current coke oven equipment or coal cakes and the oven door are not accurately aligned, an alarm prompt instruction is sent to a ground coordination central control system, so that the ground coordination central control system outputs a corresponding alarm prompt; the corresponding alarm prompt is output through a loudspeaker, a display screen or a buzzer of the ground coordination center control system; sending an automatic operation forbidding instruction to the ground coordination center control system, and enabling the ground coordination center control system to forbid the corresponding coke oven vehicle from automatically operating through a corresponding control signal; the ground coordination central control system is used for managing the operation of each coke oven vehicle and recording the operation process of each coke oven vehicle.
In a second aspect, a device for verifying the accurate alignment of a door during a coking operation, comprises:
the image acquisition module is used for acquiring a plurality of acquired images containing two gaps between the coke oven equipment or the coal cake and the oven walls on two sides of the oven door before the coke oven equipment or the coal cake enters the oven door;
the gap calculation module is used for calculating and obtaining two gap sizes between the coke oven equipment or the briquette and the oven walls on two sides of the oven door according to the obtained images;
the calibration module is used for calculating the difference value between two gap sizes between the obtained coke oven equipment or coal cakes and the oven walls on two sides of the oven door and comparing the difference value with a preset gap threshold value; and if the difference is less than or equal to the preset gap threshold value, judging that the current coke oven equipment or coal cake is accurately aligned with the oven door.
In a third aspect, a computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method provided by the first method.
The invention has at least the following beneficial effects:
based on further analysis and research on the problems in the prior art, the invention realizes that a means capable of directly and quantitatively measuring and checking whether the furnace door is aligned accurately is lacked at present; in the invention, based on a plurality of collected images of two gaps between the coke oven equipment or the coal cake and the two side oven walls, the numerical value of the gap between the coke oven equipment or the coal cake and the two side oven walls is directly measured, and a conclusion whether the alignment is accurate can be made further according to the difference value of the numerical values of the gaps on the two sides and the proportion of the numerical value of the larger gap; the invention replaces the naked eye estimation of human with the accurate measurement of the machine, and can provide accurate judgment for the accurate alignment of the oven door in the coking operation process, thereby ensuring the safety of the coking operation and avoiding the occurrence of production accidents.
Meanwhile, in the invention, because the gap images at two sides are acquired simultaneously, and the error caused by additional deviation such as lens distortion and the like is finally counteracted by subtraction operation, the accurate conclusion can be obtained only by calculating the proportion of the relative difference value of the two gap values and the larger gap value; therefore, the precision requirement on the photographic equipment is reduced, and the requirements on the distance between the coke pushing rod, the briquette and the coke guide grid and the furnace door are not strict when the image is sampled, so that the practicability is enhanced, and the installation and debugging difficulty is reduced.
In addition, according to the invention, when the current coke oven equipment or coal cake and the oven door are not accurately aligned, corresponding warning prompt can be given and the corresponding coke oven vehicle can be controlled to automatically pause, so that the operation safety can be better ensured.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for verifying whether an oven door is accurately aligned during a coking operation according to an embodiment of the present invention;
FIG. 2 is an enlarged view of an image characteristic of a gap between a briquette and a left side wall of a furnace according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a gap calculation according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a method for verifying proper alignment of oven doors during a coking operation according to an embodiment of the present invention;
FIG. 5 is a block diagram of a module configuration of an apparatus for verifying proper alignment of oven doors during a coking operation according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in FIG. 1, a method for verifying proper alignment of oven doors during a coking operation is provided, comprising the steps of:
step S101, before the coke oven equipment or the coal cake enters the oven door, a plurality of images which are simultaneously acquired and contain two gaps between the coke oven equipment or the coal cake and the oven walls on two sides of the oven door are acquired.
The coke oven equipment is specifically a coke pushing rod of a coke pushing car or a coke guide grid of a coke guide; in addition, the coal cake is sent into the furnace door through a coal charging car. Before a pushing ram, a briquette or a coke guide grid enters a hearth, a camera (which can be two groups of linear array cameras or two groups of area-array cameras) is used for simultaneously acquiring images containing two gaps between the pushing ram, the briquette or the coke guide grid and furnace walls on two sides; when capturing images, the cameras are captured in a preset number, which may be, but is not limited to, 5-10. In addition, two sets of linear cameras or two sets of area cameras are respectively arranged on the coke pusher, the coke guide or the coal charging car and are positioned in front of the two gaps, in other words, for the two gaps, two sets of cameras are used for simultaneously and respectively acquiring a plurality of images corresponding to the gaps. That is, for each gap, 5-10 corresponding images can be acquired.
In order to ensure the accuracy of the checking result, the two groups of linear array cameras or the two groups of area cameras are two groups of linear array cameras or area cameras with the same model. Because the models of the two sets of cameras are the same, and because the gap images on the two sides are acquired simultaneously, the errors of the two sets of cameras caused by additional deviations such as lens distortion are consistent, the additional deviations such as lens distortion can be finally counteracted through subtraction operation, and the errors caused by the additional deviations such as lens distortion can be ignored.
And S102, calculating to obtain a measurement value of the size of two gaps between the coke oven equipment or the briquette and the oven walls on two sides of the oven door according to the obtained images.
Specifically, step S102 specifically includes:
and S1021, performing noise reduction treatment on the acquired multiple images containing the coke oven equipment or the two gaps between the coal cakes and the oven walls on the two sides of the oven door, and filtering out unqualified images.
The filtering of the unqualified images is to perform weighted averaging on a plurality of images corresponding to the two gaps, and then two images with the largest difference with the corresponding weighted average result are filtered out from the plurality of images corresponding to the two gaps. Of course, the image noise reduction and the filtering operation of the unqualified image are common technical means for image processing, are common knowledge of those skilled in the art, and are not described in detail herein.
Step S1022, extracting a useful pixel region in each image obtained after performing the denoising and filtering operations according to a preset feature, where the useful pixel region is a pixel region corresponding to the gap.
The preset features are image color features or infrared features and are used for distinguishing gaps of the furnace wall from other pixel parts of the image. Because the image color characteristics and the infrared characteristics of the flame, the coke pushing rod, the coal cake or the coke guide grid are different, the flame area in the image can be distinguished through the color characteristics or the infrared characteristics. Further, the flames can be shot by the camera through the gaps, so that the flame regions correspond to the gap regions, and the gap regions in the images can be distinguished according to the color features or the infrared features of the images. In addition, the predetermined characteristic may be a visible wavelength characteristic or an ultraviolet characteristic.
Step S1023, feature-amplifying the extracted useful pixel region, and calculating a plurality of gap size data corresponding to the two gaps according to a plurality of useful pixel regions corresponding to the two gaps.
For two gaps, a plurality of useful pixel areas are correspondingly arranged respectively; from each useful pixel area, a gap size data can be calculated. For example, a schematic diagram obtained by feature enlarging the useful pixel area in the obtained image of the coal cake and the left furnace wall is shown in fig. 2, and the calculated gap size based on fig. 2 is shown in fig. 3. As can be seen from fig. 3, when the gap size is calculated based on a useful pixel region, a gap size finally determined based on the useful pixel region is a value corresponding to the widest position of the gap in the useful pixel region. And calculating to obtain a plurality of gap size data for each gap according to a plurality of useful pixel areas corresponding to the two gaps respectively.
Step S1024, calculating an average value of a plurality of gap size data corresponding to the two gaps, respectively, as a gap size measurement value of the two gaps.
Since both gaps correspond to a plurality of gap size data, the average of the plurality of gap size data corresponding to each of the two gaps is taken as the final result of the gap size measurement of each of the two gaps in view of providing measurement accuracy.
Step S103, calculating a difference value between the two gap size measurement values, calculating a ratio of the difference value to the larger one of the two gap size measurement values, and comparing the ratio with a preset ratio threshold; and if the ratio is less than or equal to a preset ratio threshold value, judging that the current coke oven equipment or coal cake is accurately aligned with the oven door.
In practical applications, the preset ratio threshold is not fixed, and can be set according to actual conditions of the field device and the coke oven. That is, the requirements for the gap will be different for different furnace types and different equipment manufacturers, so that the preset proportional threshold can be adjusted according to different furnace types, different field devices and actual use conditions.
By the determination method of step S103, the absolute accuracy of the calculation result is not required, and the conclusion can be reached by calculating the ratio of the relative difference between the two clearance values to the larger clearance value. Therefore, the precision requirement on the photographic equipment is greatly reduced, the requirements on the far and near positions of the coke pushing rod, the briquette and the coke guide grid away from the furnace door during image sampling are not strict, the practicability is enhanced, and the installation and debugging difficulty is reduced.
In addition, if the ratio is larger than the preset ratio threshold, it is judged that the current coke oven equipment or coal cake and the oven door are not accurately aligned, and at the moment, an alarm prompt instruction is sent to the control system of the corresponding coke oven vehicle, so that the control system of the corresponding coke oven vehicle outputs a corresponding alarm prompt. That is, when the coke pushing rod is not accurately aligned with the oven door, an alarm prompt instruction is sent to a control system of the coke pusher where the coke pushing rod is located; when the coke guide grid is judged not to be accurately aligned with the furnace door, an alarm prompt instruction is sent to a control system of the coke guide vehicle where the coke guide grid is located; when the coal cake is not accurately aligned with the furnace door, an alarm prompt instruction is sent to the coal charging car for pushing the coal cake. The manner in which the alert prompt is output may be, but is not limited to, output via a speaker, display screen, or buzzer of the control system of the respective coke oven vehicle. Meanwhile, in order to ensure the operation safety, a work pause instruction is also sent to the control system of the corresponding coke oven vehicle, so that the control system of the corresponding coke oven vehicle controls the corresponding coke oven vehicle to pause to advance towards the coke oven through the corresponding control signal.
Furthermore, a ground coordination central control system can be arranged in the coking plant and used for managing the operation of each coke oven vehicle and recording the operation process of each coke oven vehicle. In the ground coordination central control system, the real-time online monitoring of the running state of each coke oven vehicle, the prompting and recording of alarm information of each coke oven vehicle, the coke pushing information, the coal charging information and the like can be recorded. That is, when it is determined that the coke oven equipment or the coal cake and the oven door are not accurately aligned at present, an alarm prompt instruction is sent to the ground coordination center control system, so that the ground coordination center control system outputs a corresponding alarm prompt, thereby providing danger prompts for managers and facilitating the timely discovery of the managers when the managers are abnormal; the manner of outputting the alarm prompt may also be, but is not limited to, outputting through a speaker, a display screen, or a buzzer of the ground coordination center control system. In addition, an automatic operation forbidding command is sent to the ground coordination center control system, so that the ground coordination center control system forbids the corresponding coke oven vehicle to carry out automatic operation through the corresponding control signal, and the safety of the coking operation process is further ensured.
Another schematic flow chart of the method provided in this embodiment is shown in fig. 4.
In the method for verifying whether the oven door is accurately aligned in the coking operation process, the numerical value of the gap between the coke pushing rod, the coal cake or the coke guide grid and the oven walls on the two sides is directly measured based on a plurality of collected images of two gaps between the coke pushing rod, the coal cake or the coke guide grid and the oven walls on the two sides, and the accurate alignment conclusion can be drawn further according to the difference value of the numerical values of the gaps on the two sides and the ratio of the numerical value of the larger gap; the invention replaces the naked eye estimation of human with the accurate measurement of the machine, and can provide accurate judgment for the accurate alignment of the oven door in the coking operation process, thereby ensuring the safety of the coking operation and avoiding the occurrence of production accidents.
In the method provided by the invention, because the gap images at two sides are acquired simultaneously, and errors caused by additional deviation such as lens distortion and the like are finally counteracted through subtraction operation, an accurate conclusion can be obtained only by calculating the proportion of the relative difference value of the two gap values to a larger gap value; therefore, the precision requirement on the photographic equipment is reduced, and the requirements on the distance between the coke pushing rod, the briquette and the coke guide grid and the furnace door are not strict when the image is sampled, so that the practicability is enhanced, and the installation and debugging difficulty is reduced.
In addition, by the method provided by the invention, when the current coke oven equipment or coal cakes and the oven door are not accurately aligned, corresponding warning prompts can be given, and the corresponding coke oven vehicle can be controlled to automatically pause, so that the operation safety can be better ensured.
By the method provided by the invention, the evaluation information of the alignment deviation and the over-deviation warning can be provided for a driver in a manual operation mode; when the device is used for full-automatic or unattended operation of the coke car, a reliable check and feedback factor can be provided, and the reliability and the safety of the device are improved.
It should be understood that although the steps in the flowcharts of fig. 1 and 4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1 and 4 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in FIG. 5, an apparatus for verifying proper alignment of an oven door during a coking operation is provided, comprising the following program modules:
the image acquisition module 501 is used for acquiring a plurality of acquired images containing two gaps between the coke oven equipment or the coal cake and the oven walls on two sides of the oven door before the coke oven equipment or the coal cake enters the oven door;
the gap calculation module 502 is configured to calculate two gap sizes between the coke oven equipment or the briquette and the oven walls on two sides of the oven door according to the acquired multiple images;
the checking module 503 is configured to calculate a difference between two sizes of gaps between the coke oven equipment or the briquette and the oven walls on two sides of the oven door, and compare the difference with a preset gap threshold; and if the difference value is less than or equal to the preset gap threshold value, judging that the current coke oven equipment or coal cake is accurately aligned with the oven door.
For the specific limitation of the device for checking whether the oven door is accurately aligned during the coking operation, reference may be made to the above-mentioned limitation of the method for checking whether the oven door is accurately aligned during the coking operation, and details thereof are not repeated herein. All or part of each module in the device for checking whether the oven door is accurately aligned in the coking operation process can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In the device for verifying whether the oven door is accurately aligned in the coking operation process, the numerical value of the gap between the coke pushing rod, the coal cake or the coke guide grid and the oven walls on the two sides is directly measured based on a plurality of collected images of two gaps between the coke pushing rod, the coal cake or the coke guide grid and the oven walls on the two sides, and the accurate alignment conclusion can be drawn further according to the difference value of the numerical values of the gaps on the two sides and the ratio of the numerical value of a larger gap; the invention replaces the naked eye estimation of human with the accurate measurement of the machine, and can provide accurate judgment for the accurate alignment of the oven door in the coking operation process, thereby ensuring the safety of the coking operation and avoiding the occurrence of production accidents.
In the device provided by the invention, because the gap images at two sides are acquired simultaneously, and errors caused by additional deviation such as lens distortion and the like are finally counteracted through subtraction operation, an accurate conclusion can be obtained only by calculating the proportion of the relative difference value of the two gap values to a larger gap value; therefore, the precision requirement on the photographic equipment is reduced, and the requirements on the distance between the coke pushing rod, the briquette and the coke guide grid and the furnace door are not strict when the image is sampled, so that the practicability is enhanced, and the installation and debugging difficulty is reduced.
By the device provided by the invention, evaluation information of alignment deviation and over-deviation warning can be provided for a driver in a manual operation mode; when the device is used for full-automatic or unattended operation of the coke car, a reliable check and feedback factor can be provided, and the reliability and the safety of the device are improved.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 6. The computer device comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of verifying whether an oven door is correctly aligned during a coking operation. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the architecture shown in fig. 6 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, which includes a memory and a processor, wherein the memory stores a computer program, and all or part of the procedures in the method of the above embodiment are involved. The form of the computer device can be, but is not limited to, a computer or a single chip microcomputer, a single board computer, a smart camera or a PLC.
In one embodiment, a computer-readable storage medium having a computer program stored thereon is provided, which relates to all or part of the processes of the above-described embodiment methods.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for checking whether an oven door is accurately aligned in the coking operation process is characterized by comprising the following steps:
acquiring a plurality of images which are simultaneously acquired and contain two gaps between coke oven equipment or coal cakes and oven walls on two sides of an oven door before the coke oven equipment or the coal cakes enter the oven door;
calculating to obtain a gap size measurement value of two gaps between the coke oven equipment or the briquette and the oven walls on two sides of the oven door according to the obtained images;
calculating a difference value between the two gap size measurement values, calculating a ratio of the difference value to the larger one of the two gap size measurement values, and comparing the ratio with a preset ratio threshold; and if the ratio is less than or equal to a preset ratio threshold value, judging that the current coke oven equipment or coal cake is accurately aligned with the oven door.
2. The method of claim 1, wherein the coke oven equipment is a coke pusher bar of a coke pusher or a coke guide grid of a coke guide, and the coal cake is fed to the oven door by a coal car.
3. The method for verifying the accurate alignment of the oven door in the coking operation process according to claim 2, wherein the plurality of images simultaneously acquired, including two gaps between the coke oven equipment or the coal cake and the oven walls at two sides of the oven door, are acquired by simultaneously photographing the two gaps respectively according to a preset number through two sets of line cameras or two sets of area cameras; the two groups of linear array cameras or the two groups of area cameras are respectively arranged on the coke pusher, the coke guide or the coal charging car and are positioned in front of the two gaps.
4. The method of claim 3, wherein the two sets of line cameras or area cameras are two sets of line cameras or area cameras of the same type.
5. The method for verifying the accurate alignment of the oven door during the coking operation according to claim 4, wherein the second step comprises:
carrying out noise reduction treatment on the obtained multiple images containing two gaps between the coke oven equipment or the coal cake and the oven walls on two sides of the oven door, and filtering out unqualified images;
extracting a useful pixel area in each image obtained after the noise reduction and filtering operation according to preset characteristics, wherein the useful pixel area is a pixel area corresponding to the gap;
feature amplification is carried out on the extracted useful pixel regions, and according to a plurality of useful pixel regions corresponding to the two gaps respectively, a plurality of gap size data corresponding to the two gaps respectively are obtained through calculation;
and respectively calculating the average value of a plurality of gap size data corresponding to the two gaps as the gap size measured values of the two gaps.
6. The method of claim 5, wherein the predetermined characteristic is an image color characteristic or an infrared characteristic.
7. The method for verifying the accurate alignment of an oven door during a coking operation according to any one of claims 1 to 6, wherein the third step further comprises:
if the ratio is larger than the preset ratio threshold, judging that the current coke oven equipment or coal cake and the oven door are not accurately aligned, and sending an alarm prompt instruction to a control system of the corresponding coke oven vehicle to enable the control system of the corresponding coke oven vehicle to output a corresponding alarm prompt; the corresponding alarm prompt is output through a loudspeaker, a display screen or a buzzer of a control system of the corresponding coke oven vehicle; and sending a work pause instruction to the control system of the corresponding coke oven vehicle, so that the control system of the corresponding coke oven vehicle controls the corresponding coke oven vehicle to pause to advance towards the coke oven direction through the corresponding control signal.
8. The method of claim 7, wherein the third step further comprises:
when the current coke oven equipment or coal cakes and the oven door are not accurately aligned, an alarm prompt instruction is sent to a ground coordination central control system, so that the ground coordination central control system outputs a corresponding alarm prompt; the corresponding alarm prompt is output through a loudspeaker, a display screen or a buzzer of the ground coordination center control system; sending an automatic operation forbidding instruction to the ground coordination center control system, and enabling the ground coordination center control system to forbid the corresponding coke oven vehicle from automatically operating through a corresponding control signal; the ground coordination central control system is used for managing the operation of each coke oven vehicle and recording the operation process of each coke oven vehicle.
9. A device for checking whether an oven door is accurately aligned in the coking operation process is characterized by comprising:
the image acquisition module is used for acquiring a plurality of acquired images containing two gaps between the coke oven equipment or the coal cake and the oven wall at two sides of the oven door before the coke oven equipment or the coal cake enters the oven door;
the gap calculation module is used for calculating and obtaining two gap sizes between the coke oven equipment or the briquette and the oven walls on two sides of the oven door according to the obtained images;
the calibration module is used for calculating the difference value between two gap sizes between the obtained coke oven equipment or coal cakes and the oven walls on two sides of the oven door and comparing the difference value with a preset gap threshold value; and if the difference is less than or equal to the preset gap threshold value, judging that the current coke oven equipment or coal cake is accurately aligned with the oven door.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 8.
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| CN117050760A (en) * | 2023-10-13 | 2023-11-14 | 山西中科冶金建设有限公司 | Intelligent coal charging and coke discharging system |
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| CN114854435B (en) | 2023-05-30 |
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