CN115174798B - Image data acquisition and analysis system and method for stainless steel welding crevasses - Google Patents
Image data acquisition and analysis system and method for stainless steel welding crevasses Download PDFInfo
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- CN115174798B CN115174798B CN202211077250.6A CN202211077250A CN115174798B CN 115174798 B CN115174798 B CN 115174798B CN 202211077250 A CN202211077250 A CN 202211077250A CN 115174798 B CN115174798 B CN 115174798B
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Abstract
The invention relates to an image data acquisition and analysis system and method for a stainless steel welding breach, which comprises the following steps: the explosion-proof imaging device is internally provided with a movable support frame, a network transmission interface, an explosion-proof lens, an induction sensor, an optical filter and a voice coil motor; the combined analysis mechanism is used for calculating the corresponding crevasse area of the stainless steel welding crevasse based on the imaging focal length, the integral depth of field value of the stainless steel welding crevasse and the area proportion of the sub-picture where the stainless steel welding crevasse is located to the on-site imaging picture; a length mapping mechanism for determining a length of wire proportional to the area of the break. The image data acquisition and analysis system and the method for the stainless steel welding crevasses can acquire and analyze the visual image data of the stainless steel welding crevasses and intelligently analyze the crevasse area of the stainless steel welding crevasses according to a plurality of items of visual data, thereby realizing the self-adaptive material preparation of welding wires.
Description
Technical Field
The invention relates to the field of stainless steel welding treatment, in particular to an image data acquisition and analysis system and method for a stainless steel welding crevasse.
Background
At present, when carrying out the closed welding treatment to stainless steel welding breach, because the area of breach differs and the geometry of breach is different, hardly accurate judgement is accomplished the welding wire length that the closed welding of current breach needs through manual mode, the scene that the welding wire stocked too much or stocked the inadequately appears easily, however, the former has caused the waste of stocking, and the latter has influenced the progress of engineering.
CN216815407U discloses an arc welding machine is with welding wire length measuring device, including the casing, be provided with import and export on the casing, be provided with first bearing frame on the shells inner wall, first bearing frame is connected with the measuring roll through first pivot, be provided with the signal head on the measuring roll, shells inner wall is provided with the counter, the counter passes through the signal line and is connected with the display.
CN208178647U discloses a welding wire length meter, including wheel, axletree, wheel support, welding machine main part, shutter, the below of welding machine main part is provided with the wheel support, be provided with on the wheel support the axletree, be provided with on the axletree the wheel, be provided with in the welding machine main part the shutter, the top of shutter is provided with welder joint, one side that welder connects is provided with the power cord plug, the top of power cord plug is provided with adjust knob, adjust knob's top is provided with current display screen, one side of current display screen is provided with voltage display screen, one side of voltage display screen is provided with the operation button.
CN201572998U discloses a welder device of adjustable welding wire length includes: the conductive nozzle, the adjusting body, the nozzle protecting guide sleeve, the nozzle protecting and the adjusting body sleeve are connected into a whole, then connected with the adjusting body and locked by the locking nut. The contact tip and the nozzle protector can be replaced, and the length of the welding wire can be adjusted by loosening the locking nut, namely the distance from the end face of the contact tip to the welding point. All the connecting pieces are in a matching relation, and the coaxial precision of the welding gun is suitable for the precision requirement of the automatic welding special machine with double welding guns.
However, the prior art does not disclose a technical scheme for acquiring and analyzing visual image data of a stainless steel welding crevasse, so that valuable reference information cannot be provided for welding wire stock for completing crevasse closed welding treatment.
Disclosure of Invention
In order to solve the technical problems in the related field, the invention provides an image data acquisition and analysis system and method for a stainless steel welding crevasse, which can acquire and analyze visual image data of the stainless steel welding crevasse and intelligently analyze the crevasse area of the stainless steel welding crevasse based on an imaging focal length, a crevasse depth and a visual area occupied by the crevasse, thereby providing valuable reference information for welding wire stock for completing crevasse closed welding treatment.
According to an aspect of the present invention, there is provided an image data acquisition and analysis system for a stainless steel welding breach, the system comprising:
the system comprises an explosion-proof imaging device, a mobile support frame, a network transmission interface, an explosion-proof lens, an induction sensor, an optical filter and a voice coil motor, wherein the explosion-proof imaging device is internally provided with the mobile support frame, the network transmission interface, the explosion-proof lens, the induction sensor, the optical filter and the voice coil motor and is used for triggering the imaging operation of the stainless steel welding crevasses to obtain corresponding on-site imaging pictures when receiving a first trigger command and suspending the imaging operation of the stainless steel welding crevasses when receiving a second trigger command;
the preview analysis device is connected with the explosion-proof imaging device and is used for performing preview analysis on a preview image obtained before the explosion-proof imaging device performs imaging operation so as to send a first trigger command or a second trigger command;
the preview analysis device is internally provided with a crevasse extraction component, a position analysis component and a command trigger component, the position analysis component is respectively connected with the crevasse extraction component and the command trigger component, the crevasse extraction component is used for extracting crevasse pixel points in the preview image based on color imaging characteristics of a stainless steel welding crevasse and taking an image area surrounded by the crevasse pixel points as an imaging area of the stainless steel welding crevasse, the position analysis component is used for obtaining central pixel points of the imaging area of the stainless steel welding crevasse and obtaining central pixel points of the preview image, and the command trigger component is used for determining to send a first trigger command or a second trigger command based on the relative position relationship between the central pixel points of the imaging area of the stainless steel welding crevasse and the central pixel points of the preview image;
the proportion judging mechanism is connected with the explosion-proof imaging device and used for analyzing the sub-picture where the stainless steel welding crevasses are located from the received on-site imaging picture to obtain the area proportion of the sub-picture where the stainless steel welding crevasses are located occupying the on-site imaging picture;
the combined analysis mechanism is connected with the proportion judgment mechanism and is used for calculating the area of the opening corresponding to the stainless steel welding opening based on the imaging focal length of the explosion-proof imaging device, the integral depth of field value of the sub-picture where the stainless steel welding opening is located and the area proportion of the sub-picture where the stainless steel welding opening is located occupying the field imaging picture and outputting the area as the field opening area;
and the length mapping mechanism is connected with the joint analysis mechanism and is used for determining the welding wire length which is in direct proportion to the ground breaking area to output as the current required welding wire length.
According to another aspect of the present invention, there is also provided a method for collecting and analyzing image data of a stainless steel welding breach, the method comprising:
the method comprises the following steps that an explosion-proof imaging device is used, a movable support frame, a network transmission interface, an explosion-proof lens, an induction sensor, an optical filter and a voice coil motor are arranged in the explosion-proof imaging device, and the explosion-proof imaging device is used for triggering imaging operation on a stainless steel welding crevasse to obtain a corresponding on-site imaging picture when a first trigger command is received and also used for suspending the imaging operation on the stainless steel welding crevasse when a second trigger command is received;
the preview analysis device is connected with the explosion-proof imaging device and used for performing preview analysis on a preview image obtained before the explosion-proof imaging device performs imaging operation so as to send a first trigger command or a second trigger command;
the preview analysis device is internally provided with a crevasse extraction component, a position analysis component and a command trigger component, the position analysis component is respectively connected with the crevasse extraction component and the command trigger component, the crevasse extraction component is used for extracting crevasse pixel points in the preview image based on color imaging characteristics of a stainless steel welding crevasse and taking an image area surrounded by the crevasse pixel points as an imaging area of the stainless steel welding crevasse, the position analysis component is used for obtaining central pixel points of the imaging area of the stainless steel welding crevasse and obtaining central pixel points of the preview image, and the command trigger component is used for determining to send a first trigger command or a second trigger command based on the relative position relationship between the central pixel points of the imaging area of the stainless steel welding crevasse and the central pixel points of the preview image;
the using proportion judging mechanism is connected with the explosion-proof imaging device and used for analyzing the sub-picture where the stainless steel welding crevasses are located in the received on-site imaging picture and obtaining the area proportion of the sub-picture where the stainless steel welding crevasses are located in the on-site imaging picture;
a joint analysis mechanism is used, is connected with the proportion judgment mechanism and is used for calculating the area of the opening corresponding to the stainless steel welding break on the basis of the imaging focal length of the explosion-proof imaging device, the integral depth of field value of the sub-picture where the stainless steel welding break is located and the area proportion of the sub-picture where the stainless steel welding break is located occupying the field imaging picture and outputting the area as the field area;
and a length mapping mechanism is used and connected with the joint analysis mechanism and used for determining the welding wire length which is in direct proportion to the ground breaking area to be used as the current required welding wire length output.
The image data acquisition and analysis system and the method for the stainless steel welding crevasses can acquire and analyze the visual image data of the stainless steel welding crevasses and intelligently analyze the crevasse area of the stainless steel welding crevasses according to a plurality of items of visual data, thereby realizing the self-adaptive material preparation of welding wires.
Drawings
Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a block diagram showing a system for acquiring and analyzing image data of a stainless steel welding break according to embodiment 1 of the present invention.
Fig. 2 is a flowchart illustrating the steps of the method for collecting and analyzing image data of a stainless steel welding break according to embodiment 2 of the present invention.
Detailed Description
Embodiments of the image data acquisition and analysis system and method for stainless steel welding crevasses according to the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a block diagram showing a system for acquiring and analyzing image data of a stainless steel welding break according to embodiment 1 of the present invention. The image data acquisition and analysis system for the stainless steel welding crevasses is a technical scheme for performing visual image data acquisition and analysis on the stainless steel welding crevasses, so that valuable reference information is provided for welding wire material preparation for completing crevasse closed welding treatment.
Preferably, the image data acquisition and analysis system for the stainless steel welding breach comprises:
the system comprises an explosion-proof imaging device, a mobile support frame, a network transmission interface, an explosion-proof lens, an induction sensor, an optical filter and a voice coil motor, wherein the explosion-proof imaging device is internally provided with the mobile support frame, the network transmission interface, the explosion-proof lens, the induction sensor, the optical filter and the voice coil motor, and is used for triggering the imaging operation of a stainless steel welding crevasse to obtain a corresponding on-site imaging picture when receiving a first trigger command and also used for suspending the imaging operation of the stainless steel welding crevasse when receiving a second trigger command;
the preview analysis device is connected with the explosion-proof imaging device and is used for performing preview analysis on a preview image obtained before the explosion-proof imaging device performs imaging operation so as to send a first trigger command or a second trigger command;
the preview analysis device is internally provided with a crevasse extraction component, a position analysis component and a command trigger component, the position analysis component is respectively connected with the crevasse extraction component and the command trigger component, the crevasse extraction component is used for extracting crevasse pixel points in the preview image based on color imaging characteristics of a stainless steel welding crevasse and taking an image area surrounded by the crevasse pixel points as an imaging area of the stainless steel welding crevasse, the position analysis component is used for obtaining central pixel points of the imaging area of the stainless steel welding crevasse and obtaining central pixel points of the preview image, and the command trigger component is used for determining to send a first trigger command or a second trigger command based on the relative position relationship between the central pixel points of the imaging area of the stainless steel welding crevasse and the central pixel points of the preview image;
the proportion judging mechanism is connected with the explosion-proof imaging device and used for analyzing the sub-picture where the stainless steel welding crevasses are located in the received real-site imaging picture and acquiring the area proportion of the sub-picture where the stainless steel welding crevasses are located in the real-site imaging picture;
the combined analysis mechanism is connected with the proportion judgment mechanism and is used for calculating the area of the opening corresponding to the stainless steel welding opening based on the imaging focal length of the explosion-proof imaging device, the integral depth of field value of the sub-picture where the stainless steel welding opening is located and the area proportion of the sub-picture where the stainless steel welding opening is located occupying the field imaging picture and outputting the area as the field opening area;
the length mapping mechanism is connected with the joint analysis mechanism and is used for determining the welding wire length which is in direct proportion to the ground break area to be used as the current required welding wire length to be output;
the method comprises the steps of calculating the area of a sub-picture of the stainless steel welding crevasse, wherein a three-input one-output calculation function can be established based on the imaging focal length of an explosion-proof imaging device, the integral depth of field of the sub-picture of the stainless steel welding crevasse and the area proportion of the sub-picture of the stainless steel welding crevasse occupying the field imaging picture, and is used for calculating the crevasse area corresponding to the stainless steel welding crevasse and taking the crevasse area as the field crevasse area.
Compared with the prior art, the technical scheme provided by the invention has the advantages that the current stainless steel welding crevasse area is calculated by adopting a visual analysis mechanism, and the length of the welding wire required by current welding is judged and estimated based on the calculation result, so that the automatic material preparation of the stainless steel welding operation is realized, and the scene of excessive material preparation or insufficient material preparation is avoided.
Then, the technical scheme of the invention also adopts a preview analysis device with a built-in breach extraction component, a position analysis component and a command trigger component and an explosion-proof imaging device with a built-in movable support frame, a network transmission interface, an explosion-proof lens, an induction sensor, an optical filter and a voice coil motor, thereby providing sufficient preparation data and a reliable hardware foundation for the automatic material preparation of stainless steel welding.
Next, the detailed structure of the image data collecting and analyzing system for a stainless steel welding break according to the present invention will be further described.
More preferably, the image data acquisition and analysis system for the stainless steel welding breach may further include:
calculating the crevasse area corresponding to the stainless steel welding crevasse based on the imaging focal length of the explosion-proof imaging device, the integral depth of field value of the sub-picture where the stainless steel welding crevasse is located and the area proportion of the sub-picture where the stainless steel welding crevasse is located occupying the field imaging picture, and outputting the crevasse area as the field crevasse area, wherein the calculating comprises the following steps: aiming at three factors of an imaging focal length of an explosion-proof imaging device, an integral depth of field value of a sub-picture where a stainless steel welding break is located and an area proportion of the sub-picture where the stainless steel welding break is located occupying a field imaging picture, when any two factors are kept unchanged, the field breaking area is positively associated with the numerical value of the rest factors;
wherein analyzing the sprite where the stainless steel welding break is located from within the received field imaging picture comprises: and analyzing the sub-picture of the stainless steel welding crevasse from the received solid imaging picture based on the color imaging characteristics of the stainless steel welding crevasse.
More preferably, in the image data acquisition and analysis system for the stainless steel welding breach:
the position analysis component is used for acquiring central pixel points of an imaging area of the stainless steel welding crevasse and acquiring the central pixel points of the preview image, and the position analysis component comprises: acquiring the outline of an imaging area of the stainless steel welding crevasse, and taking a nearest pixel point near the centroid position of the outline of the imaging area of the stainless steel welding crevasse as a central pixel point of the imaging area of the stainless steel welding crevasse;
wherein, the position analysis subassembly is used for acquireing the central pixel point in the regional formation of image of stainless steel welding breach and acquireing the central pixel point of preview image still includes: and acquiring the outline of the preview image, and taking the nearest pixel point near the centroid position of the outline of the preview image as the central pixel point of the preview image.
More preferably, in the image data acquisition and analysis system for the stainless steel welding breach:
the preview analysis of the preview image obtained before the imaging operation of the explosion-proof imaging device is executed so as to send out a first trigger command or a second trigger command comprises the following steps: when a central pixel point of an imaging area of a stainless steel welding crevasse extracted from a preview image obtained before the imaging operation of the explosion-proof imaging device is executed is located at the central pixel point of the preview image, a first trigger command is sent out.
More preferably, in the image data acquisition and analysis system for the stainless steel welding crevasse:
the preview analysis of the preview image obtained before the imaging operation of the explosion-proof imaging device is executed to send out a first trigger command or a second trigger command further comprises: when a central pixel point of an imaging area of a stainless steel welding crevasse extracted from a preview image obtained before the explosion-proof imaging device executes imaging operation is not located at the central pixel point of the preview image, a second trigger command is sent out;
wherein, preview analysis is carried out to the preview image that obtains before explosion-proof imaging device carries out imaging operation in order to send out first trigger command or second trigger command still includes: and sending a second trigger command when the number of pixel points occupied by an imaging area of a stainless steel welding crevasse extracted from a preview image obtained before the imaging operation is executed by the explosion-proof imaging device is less than or equal to a set number threshold.
Fig. 2 is a flowchart illustrating the steps of the method for collecting and analyzing image data of a stainless steel welding break according to embodiment 2 of the present invention. The image data acquisition and analysis method of the stainless steel welding crevasse is a technical scheme for acquiring and analyzing visual image data of the stainless steel welding crevasse, so that valuable reference information is provided for welding wire stock for completing crevasse closed welding treatment.
Preferably, the image data acquisition and analysis method for the stainless steel welding breach comprises the following steps:
s201: the method comprises the following steps that an explosion-proof imaging device is used, a movable support frame, a network transmission interface, an explosion-proof lens, an induction sensor, an optical filter and a voice coil motor are arranged in the explosion-proof imaging device, the explosion-proof imaging device is used for triggering imaging operation on a stainless steel welding crevasse to obtain a corresponding on-site imaging picture when a first trigger command is received, and the explosion-proof imaging device is also used for suspending imaging operation on the stainless steel welding crevasse when a second trigger command is received;
s202: the preview analysis device is connected with the explosion-proof imaging device and used for performing preview analysis on a preview image obtained before the explosion-proof imaging device performs imaging operation so as to send a first trigger command or a second trigger command;
the preview analysis device is internally provided with a crevasse extraction component, a position analysis component and a command trigger component, the position analysis component is respectively connected with the crevasse extraction component and the command trigger component, the crevasse extraction component is used for extracting crevasse pixel points in the preview image based on color imaging characteristics of a stainless steel welding crevasse and taking an image area surrounded by the crevasse pixel points as an imaging area of the stainless steel welding crevasse, the position analysis component is used for acquiring central pixel points of the imaging area of the stainless steel welding crevasse and central pixel points of the preview image, and the command trigger component is used for determining to send a first trigger command or a second trigger command based on relative position relations between the central pixel points of the imaging area of the stainless steel welding crevasse and the central pixel points of the preview image;
s203: the using proportion judging mechanism is connected with the explosion-proof imaging device and used for analyzing the sub-picture where the stainless steel welding crevasses are located in the received on-site imaging picture and obtaining the area proportion of the sub-picture where the stainless steel welding crevasses are located in the on-site imaging picture;
s204: a joint analysis mechanism is used, is connected with the proportion judgment mechanism and is used for calculating the area of the opening corresponding to the stainless steel welding break on the basis of the imaging focal length of the explosion-proof imaging device, the integral depth of field value of the sub-picture where the stainless steel welding break is located and the area proportion of the sub-picture where the stainless steel welding break is located occupying the field imaging picture and outputting the area as the field area;
s205: and a length mapping mechanism is used and connected with the joint analysis mechanism and used for determining the welding wire length which is in direct proportion to the ground breaking area to be used as the current required welding wire length output.
Next, the specific steps of the method for collecting and analyzing image data of a stainless steel welding break according to the present invention will be further described.
More preferably, the method for acquiring and analyzing the image data of the stainless steel welding breach may further include:
calculating the crevasse area corresponding to the stainless steel welding crevasse based on the imaging focal length of the explosion-proof imaging device, the integral depth of field value of the sub-picture where the stainless steel welding crevasse is located and the area proportion of the sub-picture where the stainless steel welding crevasse is located occupying the field imaging picture, and outputting the crevasse area as the field crevasse area, wherein the calculating comprises the following steps: aiming at three factors of an imaging focal length of an explosion-proof imaging device, an integral depth of field value of a sub-picture where a stainless steel welding break is located and an area proportion of the sub-picture where the stainless steel welding break is located occupying a field imaging picture, when any two factors are kept unchanged, the field breaking area is positively associated with the numerical value of the rest factors;
wherein analyzing the sprite where the stainless steel welding break is located from within the received field imaging picture comprises: and analyzing the sub-picture of the stainless steel welding break from the received solid imaging picture based on the color imaging characteristics of the stainless steel welding break.
More preferably, in the method for acquiring and analyzing image data of the stainless steel welding breach:
the position analysis component is used for acquiring central pixel points of an imaging area of the stainless steel welding crevasse and acquiring the central pixel points of the preview image, and the position analysis component comprises: acquiring the outline of an imaging area of the stainless steel welding crevasse, and taking a nearest pixel point near the centroid position of the outline of the imaging area of the stainless steel welding crevasse as a central pixel point of the imaging area of the stainless steel welding crevasse;
wherein, the position analysis subassembly is used for acquireing the central pixel point in the regional formation of image of stainless steel welding breach and acquireing the central pixel point of preview image still includes: and acquiring the outline of the preview image, and taking the nearest pixel point near the centroid position of the outline of the preview image as the central pixel point of the preview image.
More preferably, in the image data acquisition and analysis method for the stainless steel welding crevasse:
the preview analysis of the preview image obtained before the imaging operation of the explosion-proof imaging device is executed so as to send out a first trigger command or a second trigger command comprises the following steps: and when a central pixel point of an imaging area of the stainless steel welding crevasse extracted from a preview image obtained before the explosion-proof imaging device executes imaging operation is positioned at the central pixel point of the preview image, a first trigger command is sent.
More preferably, in the image data acquisition and analysis method for the stainless steel welding crevasse:
the preview analysis of the preview image obtained before the imaging operation is executed by the explosion-proof imaging device to issue a first trigger command or a second trigger command further comprises: when a central pixel point of an imaging area of a stainless steel welding crevasse extracted from a preview image obtained before the explosion-proof imaging device executes imaging operation is not located at the central pixel point of the preview image, a second trigger command is sent out;
wherein, preview analysis is carried out to the preview image that obtains before explosion-proof imaging device carries out imaging operation in order to send out first trigger command or second trigger command still includes: and sending a second trigger command when the number of pixel points occupied by the imaging area of the stainless steel welding crevasses extracted from the preview image obtained before the imaging operation is executed by the explosion-proof imaging device is less than or equal to a set number threshold.
In addition, in the system and method for acquiring and analyzing image data of a stainless steel welding breach, the breach extraction component is used for extracting each breach pixel point in the preview image based on the color imaging characteristics of the stainless steel welding breach and taking an image area surrounded by each breach pixel point as an imaging area of the stainless steel welding breach, and the breach extraction component comprises: the color imaging characteristic of the stainless steel welding crevasses is a red-green channel numerical value interval, a black-white channel numerical value interval and a yellow-blue channel numerical value interval.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An image data acquisition and analysis system for a stainless steel welding breach, the system comprising:
the system comprises an explosion-proof imaging device, a mobile support frame, a network transmission interface, an explosion-proof lens, an induction sensor, an optical filter and a voice coil motor, wherein the explosion-proof imaging device is internally provided with the mobile support frame, the network transmission interface, the explosion-proof lens, the induction sensor, the optical filter and the voice coil motor and is used for triggering the imaging operation of the stainless steel welding crevasses to obtain corresponding on-site imaging pictures when receiving a first trigger command and suspending the imaging operation of the stainless steel welding crevasses when receiving a second trigger command;
the preview analysis device is connected with the explosion-proof imaging device and used for performing preview analysis on a preview image obtained before the explosion-proof imaging device performs imaging operation so as to send a first trigger command or a second trigger command;
the preview analysis device is internally provided with a crevasse extraction component, a position analysis component and a command trigger component, the position analysis component is respectively connected with the crevasse extraction component and the command trigger component, the crevasse extraction component is used for extracting crevasse pixel points in the preview image based on color imaging characteristics of a stainless steel welding crevasse and taking an image area surrounded by the crevasse pixel points as an imaging area of the stainless steel welding crevasse, the position analysis component is used for obtaining central pixel points of the imaging area of the stainless steel welding crevasse and obtaining central pixel points of the preview image, and the command trigger component is used for determining to send a first trigger command or a second trigger command based on the relative position relationship between the central pixel points of the imaging area of the stainless steel welding crevasse and the central pixel points of the preview image;
wherein, the breach draws subassembly is used for based on the colour formation of image characteristic extraction of stainless steel welding breach each breach pixel in the preview image and with the image area that each breach pixel encloses and establishes includes as the formation of image area of stainless steel welding breach: the color imaging characteristics of the stainless steel welding crevasses are a red-green channel numerical value interval, a black-white channel numerical value interval and a yellow-blue channel numerical value interval;
the proportion judging mechanism is connected with the explosion-proof imaging device and used for analyzing the sub-picture where the stainless steel welding crevasses are located from the received on-site imaging picture to obtain the area proportion of the sub-picture where the stainless steel welding crevasses are located occupying the on-site imaging picture;
the combined analysis mechanism is connected with the proportion judgment mechanism and is used for calculating the area of the opening corresponding to the stainless steel welding opening based on the imaging focal length of the explosion-proof imaging device, the integral depth of field value of the sub-picture where the stainless steel welding opening is located and the area proportion of the sub-picture where the stainless steel welding opening is located occupying the field imaging picture and outputting the area as the field opening area;
the length mapping mechanism is connected with the joint analysis mechanism and is used for determining the welding wire length which is in direct proportion to the ground break area to be used as the current required welding wire length to be output;
calculating the corresponding crevasse area of the stainless steel welding crevasse based on the imaging focal length of the explosion-proof imaging device, the integral depth of field of the sub-picture where the stainless steel welding crevasse is located and the area proportion of the sub-picture where the stainless steel welding crevasse is located occupying the field imaging picture, and outputting the area of the crevasse area as the field crevasse area, wherein the area of the crevasse area comprises the following steps: aiming at three factors of an imaging focal length of an explosion-proof imaging device, an integral depth of field value of a sub-picture where a stainless steel welding break is located and an area proportion of the sub-picture where the stainless steel welding break is located occupying a field imaging picture, when any two factors are kept unchanged, the field breaking area is positively associated with the numerical value of the rest factors;
analyzing the sub-picture where the stainless steel welding crevasses are located in the received field imaging picture comprises the following steps: analyzing a sub-picture where the stainless steel welding crevasse is located from the received solid imaging picture based on the color imaging characteristics of the stainless steel welding crevasse;
the position analysis component is used for acquiring central pixel points of an imaging area of the stainless steel welding crevasse and acquiring the central pixel points of the preview image, and the position analysis component comprises: acquiring the outline of an imaging area of the stainless steel welding crevasse, and taking a nearest pixel point near the centroid position of the outline of the imaging area of the stainless steel welding crevasse as a central pixel point of the imaging area of the stainless steel welding crevasse;
wherein, the position analysis subassembly is used for acquireing the central pixel point in the regional formation of image of stainless steel welding breach and acquireing the central pixel point of preview image still includes: and acquiring the outline of the preview image, and taking the nearest pixel point near the centroid position of the outline of the preview image as the central pixel point of the preview image.
2. The system for collecting and analyzing image data of a stainless steel weld breach according to claim 1,
the preview analysis of the preview image obtained before the imaging operation of the explosion-proof imaging device is executed so as to send out a first trigger command or a second trigger command comprises the following steps: when a central pixel point of an imaging area of a stainless steel welding crevasse extracted from a preview image obtained before the imaging operation of the explosion-proof imaging device is executed is located at the central pixel point of the preview image, a first trigger command is sent out.
3. The system for collecting and analyzing image data of a stainless steel weld breach according to claim 2,
the preview analysis of the preview image obtained before the imaging operation is executed by the explosion-proof imaging device to issue a first trigger command or a second trigger command further comprises: when a central pixel point of an imaging area of a stainless steel welding crevasse extracted from a preview image obtained before the explosion-proof imaging device executes imaging operation is not located at the central pixel point of the preview image, a second trigger command is sent out;
wherein, performing preview analysis on a preview image obtained before the explosion-proof imaging device performs imaging operation to issue a first trigger command or a second trigger command further comprises: and sending a second trigger command when the number of pixel points occupied by the imaging area of the stainless steel welding crevasses extracted from the preview image obtained before the imaging operation is executed by the explosion-proof imaging device is less than or equal to a set number threshold.
4. An image data acquisition and analysis method for a stainless steel welding crevasse is characterized by comprising the following steps:
the method comprises the following steps that an explosion-proof imaging device is used, a movable support frame, a network transmission interface, an explosion-proof lens, an induction sensor, an optical filter and a voice coil motor are arranged in the explosion-proof imaging device, and the explosion-proof imaging device is used for triggering imaging operation on a stainless steel welding crevasse to obtain a corresponding on-site imaging picture when a first trigger command is received and also used for suspending the imaging operation on the stainless steel welding crevasse when a second trigger command is received;
the preview analysis device is connected with the explosion-proof imaging device and used for performing preview analysis on a preview image obtained by the explosion-proof imaging device before imaging operation is performed so as to send a first trigger command or a second trigger command;
the preview analysis device is internally provided with a crevasse extraction component, a position analysis component and a command trigger component, the position analysis component is respectively connected with the crevasse extraction component and the command trigger component, the crevasse extraction component is used for extracting crevasse pixel points in the preview image based on color imaging characteristics of a stainless steel welding crevasse and taking an image area surrounded by the crevasse pixel points as an imaging area of the stainless steel welding crevasse, the position analysis component is used for obtaining central pixel points of the imaging area of the stainless steel welding crevasse and obtaining central pixel points of the preview image, and the command trigger component is used for determining to send a first trigger command or a second trigger command based on the relative position relationship between the central pixel points of the imaging area of the stainless steel welding crevasse and the central pixel points of the preview image;
wherein, the breach extraction element is used for extracting based on the colour formation of image characteristic of stainless steel welding breach each breach pixel in the preview image and with the image area that each breach pixel encloses and establishes includes as the imaging area of stainless steel welding breach: the color imaging characteristics of the stainless steel welding crevasses are a red and green channel numerical value interval, a black and white channel numerical value interval and a yellow and blue channel numerical value interval;
the using proportion judging mechanism is connected with the explosion-proof imaging device and used for analyzing the sub-picture where the stainless steel welding crevasses are located in the received on-site imaging picture and obtaining the area proportion of the sub-picture where the stainless steel welding crevasses are located in the on-site imaging picture;
a joint analysis mechanism is used, is connected with the proportion judgment mechanism and is used for calculating the area of the opening corresponding to the stainless steel welding break on the basis of the imaging focal length of the explosion-proof imaging device, the integral depth of field value of the sub-picture where the stainless steel welding break is located and the area proportion of the sub-picture where the stainless steel welding break is located occupying the field imaging picture and outputting the area as the field area;
a length mapping mechanism is used and connected with the joint analysis mechanism and used for determining the welding wire length which is in direct proportion to the ground break area to be used as the current required welding wire length to be output;
calculating the crevasse area corresponding to the stainless steel welding crevasse based on the imaging focal length of the explosion-proof imaging device, the integral depth of field value of the sub-picture where the stainless steel welding crevasse is located and the area proportion of the sub-picture where the stainless steel welding crevasse is located occupying the field imaging picture, and outputting the crevasse area as the field crevasse area, wherein the calculating comprises the following steps: aiming at three factors of an imaging focal length of an explosion-proof imaging device, an integral depth of field value of a sub-picture where a stainless steel welding break is located and an area proportion of the sub-picture where the stainless steel welding break is located occupying a field imaging picture, when any two factors are kept unchanged, the field breaking area is positively associated with the numerical value of the rest factors;
analyzing the sub-picture where the stainless steel welding crevasses are located in the received field imaging picture comprises the following steps: analyzing a sub-picture where the stainless steel welding crevasse is located from the received solid imaging picture based on the color imaging characteristics of the stainless steel welding crevasse;
the position analysis component is used for acquiring central pixel points of an imaging area of the stainless steel welding crevasse and acquiring the central pixel points of the preview image, and the position analysis component comprises: acquiring the outline of an imaging area of the stainless steel welding crevasse, and taking a nearest pixel point near the centroid position of the outline of the imaging area of the stainless steel welding crevasse as a central pixel point of the imaging area of the stainless steel welding crevasse;
wherein, the position analysis subassembly is used for acquireing the central pixel point in the regional formation of image of stainless steel welding breach and acquireing the central pixel point of preview image still includes: and acquiring the outline of the preview image, and taking the nearest pixel point near the centroid position of the outline of the preview image as the central pixel point of the preview image.
5. The method for collecting and analyzing image data of a stainless steel welding breach according to claim 4, wherein the image data of the stainless steel welding breach is acquired by a camera,
the preview analysis of the preview image obtained before the imaging operation of the explosion-proof imaging device is executed so as to send out a first trigger command or a second trigger command comprises the following steps: and when a central pixel point of an imaging area of the stainless steel welding crevasse extracted from a preview image obtained before the explosion-proof imaging device executes imaging operation is positioned at the central pixel point of the preview image, a first trigger command is sent.
6. The method for collecting and analyzing image data of a stainless steel welding breach according to claim 5, wherein the image data of the stainless steel welding breach is acquired by a camera,
the preview analysis of the preview image obtained before the imaging operation is executed by the explosion-proof imaging device to issue a first trigger command or a second trigger command further comprises: when a central pixel point of an imaging area of a stainless steel welding crevasse extracted from a preview image obtained before the explosion-proof imaging device executes imaging operation is not located at the central pixel point of the preview image, a second trigger command is sent out;
wherein, preview analysis is carried out to the preview image that obtains before explosion-proof imaging device carries out imaging operation in order to send out first trigger command or second trigger command still includes: and sending a second trigger command when the number of pixel points occupied by the imaging area of the stainless steel welding crevasses extracted from the preview image obtained before the imaging operation is executed by the explosion-proof imaging device is less than or equal to a set number threshold.
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| CN112621033A (en) * | 2020-12-10 | 2021-04-09 | 北京博清科技有限公司 | Welding gun positioning method, device, equipment and storage medium |
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