CN115876093B - Performance detection system for aluminum alloy - Google Patents
Performance detection system for aluminum alloy Download PDFInfo
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- CN115876093B CN115876093B CN202310141905.XA CN202310141905A CN115876093B CN 115876093 B CN115876093 B CN 115876093B CN 202310141905 A CN202310141905 A CN 202310141905A CN 115876093 B CN115876093 B CN 115876093B
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Abstract
The invention relates to the technical field of metal performance detection, and discloses a performance detection method for aluminum alloy, which comprises the following steps: s1, determining a surface to be detected of aluminum alloy, dividing the surface to be detected according to inclination, and dividing the surface to be detected into a plurality of actually measured partial detection surfaces; s2, setting an inclination threshold, grouping the actually measured distribution detection surfaces according to the inclination threshold, and regarding the actually measured distribution detection surfaces within the same inclination threshold as equal-slope detection surfaces to be parallel to one another to form the same group. According to the performance detection system for the aluminum alloy, the surface of the aluminum alloy ingot is irradiated by parallel light, the elongated image is equivalent to replace a projection which is not perceived, so that a vision mechanism can accurately capture the image length of each projection, then the actual projection height of the projection is calculated by the image length and the included angle between the parallel light and the surface of the aluminum alloy ingot, and whether the height is in a reasonable range is judged.
Description
Technical Field
The invention relates to the technical field of metal performance detection, in particular to a performance detection system for aluminum alloy.
Background
Aluminum is commonly referred to as electrolytic aluminum in the market, and is a raw material for producing aluminum materials and aluminum alloy materials. Aluminum is a metal with low strength and good plasticity, and besides the application of partial pure aluminum, the aluminum is prepared into an alloy for improving strength or inducing functions. The aluminum participates in an alloy element, so that the structure and the function of the aluminum can be changed, and the aluminum is suitable for being used as various processing materials or casting parts, namely common aluminum alloy metal components;
the aluminum alloy ingot raw material is generally in a cylindrical structure or a cubic structure after being produced and molded, and the aluminum alloy ingot after die casting has a plurality of standard standards for evaluating performance indexes, for example: hardness, tensile elongation, thermal stability, corrosion resistance, flatness of the surface of an aluminum alloy ingot, density of air holes, and the like;
wherein, because the surface flatness of the aluminum alloy ingot is affected by a few tiny bulges, the bulges are smaller, so when the bulges are detected by a vision mechanism, the vision mechanism is difficult to capture the fluctuation of the tiny bulges on the surface of the aluminum alloy ingot, which reduces the detection precision of the aluminum alloy ingot.
Disclosure of Invention
The invention provides a performance detection system for aluminum alloy, which is used for solving the problems that in the prior art, as the surface flatness of an aluminum alloy ingot is affected, small bulges are more, when the bulges are detected by a vision mechanism, the vision mechanism is difficult to capture the fluctuation of the small bulges on the surface of the aluminum alloy, and the detection precision of the aluminum alloy ingot is reduced.
The invention provides the following technical scheme: a performance detection method for aluminum alloy comprises the following steps:
s1, determining a surface to be detected of aluminum alloy, dividing the surface to be detected according to inclination, and dividing the surface to be detected into a plurality of actually measured partial detection surfaces;
s2, setting an inclination threshold, grouping the actually measured distribution detection surfaces according to the inclination threshold, and regarding the actually measured distribution detection surfaces within the same inclination threshold as equal slope detection surfaces which are arranged in parallel to form the same group;
s3, measuring the slope average value of each group of equal slope detection surfaces;
s4, displaying the detection points on the equal-slope detection surface in an imaging mode by using an equivalent substitution mode, recording imaging lengths of the detection points after displaying the detection points in an imaging mode, calculating the clear height of the detection points by the imaging lengths, determining an area with the imaging lengths exceeding a set value as a first performance area, and determining an area with the imaging lengths not exceeding the set value as a second performance area.
As an alternative to the performance detection system for aluminum alloys according to the present invention, wherein: the step of dividing the surface to be detected according to the inclination comprises the following steps:
selecting an adjacent surface perpendicular to the surface to be detected of the aluminum alloy as an inclination planning surface;
establishing a plane rectangular coordinate system xoy according to the gradient planning plane;
obtaining connecting lines of the upper side and the lower side of the gradient planning surface, respectively marking the connecting lines as a first extension line and a second extension line, marking inflection point coordinates of the first extension line and the second extension line, wherein the inflection point coordinates of the first extension line correspond to the inflection point coordinates of the second extension line one by one;
dividing the surface to be detected into a plurality of subsection detection surfaces according to coordinates of each inflection point on the first extension line;
and calculating the slope of coordinates of two adjacent inflection points on the first extension line, and calculating the inclination angle of the corresponding distribution detection surface.
As an alternative to the performance detection system for aluminum alloys according to the present invention, wherein: the calculating the slope of coordinates of two adjacent inflection points on the first extension line, for calculating the inclination angle of the distribution detection surface corresponding to the slope specifically includes:
acquiring a slope correction line;
the connecting line of coordinates of two adjacent inflection points on the first extension line is regarded as a slope correction line, the distance of the slope correction line is marked as L, a perpendicular bisector of the slope correction line is made and is intersected with the first extension line, and the intersection point is marked as a slope correction point;
calculating the distance between the slope correction point and the slope correction line, and marking the distance as H;
if it isAnd (2) 0.01, the slope of the slope correction line is recorded as the inclination angle of the distribution detection surface, and the distribution detection surface is regarded as the actually measured distribution detection surface.
As an alternative to the performance detection system for aluminum alloys according to the present invention, wherein: if it isDividing the distribution detection surface into two sections by taking the slope correction point as a limit, and respectively marking the two sections as a first distribution detection surface and a second distribution detection surface;
and regarding the first distribution detection surface and the second distribution detection surface as two actually measured distribution detection surfaces, calculating the inclination of the inclination correction point and coordinates of two adjacent inflection points, and respectively corresponding to the inclination angles of the two actually measured distribution detection surfaces.
As an alternative to the performance detection system for aluminum alloys according to the present invention, wherein: integrating the inclination angles of all the actually measured distribution detection surfaces;
setting the inclination threshold to be 5 degrees;
and selecting actually-measured distribution detection surfaces with inclination angle phase difference values between 5 degrees, and arranging the actually-measured distribution detection surfaces into the same group.
As an alternative to the performance detection system for aluminum alloys according to the present invention, wherein: the method for displaying the detection point on the equal slope detection surface by using the light generator through an equivalent alternative mode specifically comprises the following steps:
emitting parallel light beams to each group of actually measured distribution detection surfaces through a light generator;
selecting a group of equal slope detection surfaces, and adjusting the included angle between the light beam of the light generator and the inclined average value of the inclined surfaces of the group of equal slope detection surfaces to be a;
then, the protruding height g=tana×the imaging length of the detection point.
As an alternative to the performance detection system for aluminum alloys according to the present invention, wherein: the method for displaying the image of the detection point on the equal slope detection surface by using the light generator in an equivalent alternative mode, and recording the imaging length of the detection point after displaying the image comprises the following steps:
acquiring a starting point position of an image and a falling point position of the image, and calculating the distance between the starting point position and the falling point position as an imaging length;
marking a detection point of which the imaging length exceeds a set value;
adjusting the irradiation direction of the light generator, ensuring that the included angle between the light beam of the light generator and the inclined average value of the inclined planes of the group of equal-slope detection surfaces is a, and prompting the falling point direction of the detection point to fall in the null point area;
measuring the detection point of which the imaging length exceeds a set value again;
if the imaging length still exceeds the set value, the area where the detection point is located is marked as a first performance area, otherwise, the area is marked as a second performance area.
As an alternative to the performance detection system for aluminum alloys according to the present invention, wherein: the step of causing the falling point direction of the detection point to fall in the null point area specifically comprises:
marking the starting point position of the imaging length exceeding the set value, establishing a circular identification area by taking the imaging length as a radius, marking the circle as c, and recording the position of a detection point in the radius range;
selecting a target line segment, wherein one end point of the target line segment is coincident with the starting point position of the imaging length exceeding a set value, the other end point is intersected with the circle c, and meanwhile, the target line segment is not coincident with other detection point positions;
adjusting the irradiation direction of the light generator, ensuring the included angle between the light beam of the light generator and the inclined average value of the inclined planes of the group of equal-slope detection surfaces to be a, and promoting the image of the measuring point to be projected on the target line segment.
A system for implementing a performance testing method for an aluminum alloy, comprising:
a carrier for carrying the aluminum alloy;
a light generator for generating parallel light rays;
and a vision acquisition module for acquiring and calculating an imaging length;
and the controller is used for controlling the light generator and the vision acquisition module to work.
The invention has the following beneficial effects:
1. this a performance detecting system for aluminum alloy shines aluminum alloy ingot surface through parallel light to aluminum alloy ingot surface's arch can form an image (shadow under light) on aluminum alloy ingot surface, when parallel light's irradiation angle and aluminum alloy ingot surface contained angle diminish, aluminum alloy surface's arch will be elongated this moment, thereby with the image equivalent after being elongated replace the arch of unchangeable perception through above-mentioned mode, so that vision mechanism accurate catch every bellied image length, later calculate bellied actual outstanding height through image length and parallel light and aluminum alloy ingot surface's contained angle, and judge whether this height is in reasonable scope.
2. According to the performance detection system for the aluminum alloy, the surface to be detected is divided according to the inclination, a plurality of actually measured partial detection surfaces are formed by dividing, actually measured distribution detection surfaces located in the same inclination threshold range are regarded as equal-inclination detection surfaces, and the equal-inclination detection surfaces are arranged in parallel to form the same group, so that when the light generator irradiates, the visual detection mechanism can detect the concave-convex conditions on the actually measured partial detection surfaces.
3. According to the performance detection system for the aluminum alloy, by measuring the inclined plane average value of each group of equal-slope detection surfaces, the included angle between the light generator beam and the inclined plane average value of the group of equal-slope detection surfaces is adjusted to be a certain value, and the angle adjustment of the light generator which can be selected by the average value can be applied to each actually measured distribution detection surface in the group of equal-slope detection surfaces, so that the detection point condition of more areas can be detected by the measurement, and meanwhile, the error is reduced to a certain extent.
4. According to the performance detection system for the aluminum alloy, the irradiation direction of the light generator is adjusted, the adjusted influence is caused to fall on the target line segment, the target line segment cannot cover other detection points in the range near the detection point, and measurement errors caused by partial overlapping of the influence are avoided.
Drawings
Fig. 1 is a schematic diagram of a hardware module structure of the present invention.
Fig. 2 is a schematic diagram of the structure of the coordinates distribution of each inflection point according to the present invention.
FIG. 3 is a schematic diagram of a slope correction line and a slope correction point according to the present invention.
FIG. 4 is a schematic diagram of an image of a detection point on a detection surface of an actual measurement section according to the present invention.
FIG. 5 is a schematic view of still another embodiment of the present invention showing an image of the detection points on the detection surface of the actual measurement section.
FIG. 6 is a schematic view of the orientation of a target segment according to the present invention.
FIG. 7 is a schematic view of the orientation of an image falling on a target line segment according to the present invention.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the method, the aluminum alloy ingot surface is irradiated by parallel light, an image (shadow under light) is formed on the aluminum alloy surface by the protrusions on the aluminum alloy ingot surface, when the irradiation angle of the parallel light and the included angle of the aluminum alloy ingot surface become smaller, the protrusions on the aluminum alloy surface are elongated, so that the elongated images are equivalent to replace the invariable perceived protrusions, the visual mechanism can accurately capture the image length of each protrusion, then the actual protruding height of the protrusions is calculated by the image length and the included angle of the parallel light and the aluminum alloy ingot surface, and whether the height is in a reasonable range is judged.
Examples
A performance detection method for aluminum alloy comprises the following steps:
s1, determining a surface to be detected of aluminum alloy, dividing the surface to be detected according to inclination, and dividing the surface to be detected into a plurality of actually measured partial detection surfaces; because the aluminum alloy ingot is inevitably deformed in the moving and carrying process, when the aluminum alloy ingot is deformed, the local inclination of the surface to be detected is caused, and then when the parallel light irradiates the surface to be detected, the included angle between the light beam and the partial area on the surface to be detected is not uniform, so that the protrusions with the same height can present images with different lengths on the inclined surface to be detected, the detection precision is affected, and the accurate judgment of the protrusions on the surface of the aluminum alloy ingot is not facilitated;
the step of dividing the surface to be detected according to the inclination comprises the following steps:
selecting an adjacent surface perpendicular to the surface to be detected of the aluminum alloy as an inclination planning surface;
establishing a plane rectangular coordinate system xoy according to the gradient planning plane; with particular reference to figure 2 of the drawings,
obtaining connecting lines of the upper side and the lower side of the gradient planning surface, respectively marking the connecting lines as a first extension line and a second extension line, marking inflection point coordinates of the first extension line and the second extension line, wherein the inflection point coordinates of the first extension line correspond to the inflection point coordinates of the second extension line one by one; the coordinates of the inflection point are expressed as the nodes at which the aluminum alloy ingot is bent.
Dividing the surface to be detected into a plurality of subsection detection surfaces according to coordinates of each inflection point on the first extension line;
and calculating the slope of coordinates of two adjacent inflection points on the first extension line, and calculating the inclination angle of the corresponding distribution detection surface.
Specific calculation modes are exemplified as follows: taking the example of fig. 3, D1, D2, and D3 are coordinates of respective inflection points on the first extension line, the coordinates of D1 are (x 1, y 1), the coordinates of D2 are (x 2, y 2), and the coordinates of D3 are (x 3, y 3);
in fig. 3, the slope of the first measured distribution detection surface=The inclination angle of the first measured distribution detection surface is β, tan β= = ->The value of beta can be calculated by a formula.
Furthermore, in the actual production process, there may be fluctuation between coordinates of two inflection points, specifically referring to the distribution detection surface between D2 and D3 in fig. 3, when the fluctuation degree is smaller, the influence of light on the image of the detection point is small, such errors may not be calculated, when the fluctuation degree is large, the errors may greatly influence the image length of the detection point, and at this time, the distribution detection surface needs to be further divided; in particular, the method comprises the steps of,
the calculating the slope of coordinates of two adjacent inflection points on the first extension line, for calculating the inclination angle of the distribution detection surface corresponding to the slope specifically includes:
referring specifically to fig. 3, a slope correction line is obtained;
the connecting line of coordinates of two adjacent inflection points on the first extension line is regarded as a slope correction line, the distance of the slope correction line is marked as L, a perpendicular bisector of the slope correction line is made and is intersected with the first extension line, and the intersection point is marked as a slope correction point;
calculating the distance between the slope correction point and the slope correction line, and marking the distance as H; the coordinates of the slope correction point are (x 4, y 4), and the coordinates of the midpoint of the slope correction line are [ ],/>) In the rectangular plane coordinate system, two-point coordinates are known, the distance H between two points can be calculated, and the specific calculation mode is not repeated here;
if it isAnd (2) 0.01, the slope of the slope correction line is recorded as the inclination angle of the distribution detection surface, and the distribution detection surface is regarded as the actually measured distribution detection surface.
If it isDividing the distribution detection surface into two sections by taking the slope correction point as a limit, and respectively marking the two sections as a first distribution detection surface and a second distribution detection surface;
regarding the first distribution detection surface and the second distribution detection surface as two actually measured distribution detection surfaces, and calculating the inclination of the slope correction point and coordinates of two adjacent inflection points, wherein the inclination angles respectively correspond to the two actually measured distribution detection surfaces;
specific examples are: in fig. 3, the slope of the second measured distribution detection surface on the left side of the slope correction point= =-y2）：（-x 2) determining the inclination angle of the second measured distribution detection surface by means of its inclination value; slope= (y 3-/of third measured distribution detection surface right of slope correction point)>）：（x2-/>) The inclination angle of the third actually measured distribution detection surface can be obtained from the inclination value of the third actually measured distribution detection surface.
S2, setting an inclination threshold, grouping the actually measured distribution detection surfaces according to the inclination threshold, and regarding the actually measured distribution detection surfaces within the same inclination threshold as equal slope detection surfaces which are arranged in parallel to form the same group; integrating the inclination angles of all the actually measured distribution detection surfaces;
setting the inclination threshold to be 5 degrees;
selecting actually measured distribution detection surfaces with inclination angle phase difference values between 5 degrees, and arranging the actually measured distribution detection surfaces into the same group; so that the visual detection mechanism can detect the concave-convex condition on the detection surface of the multiple actual measurement branches when the light generator irradiates.
For example, in fig. 2, the first measured distribution detection surface and the fourth measured distribution detection surface can be regarded as equal slope detection surfaces;
s3, measuring the slope average value of each group of equal slope detection surfaces;
for example, in fig. 2, the average value of the inclination angles of the first measured distribution detecting surface and the fourth measured distribution detecting surface can be regarded as the average value of the inclination angles of the slope detecting surfaces such as shuffling;
it should be noted that, if the difference between the inclination angle of a certain actually measured distribution detecting surface and the inclination angle of other actually measured distribution detecting surfaces is above 5 °, the actually measured distribution detecting surfaces are independently grouped, and the inclination angle of the actually measured distribution detecting surface can be regarded as the average value of inclination of the inclined surface;
s4, displaying the detection points on the equal-slope detection surface in an imaging mode by using an equivalent substitution mode, recording imaging lengths of the detection points after displaying the detection points, calculating the clear height of the detection points by the imaging lengths, determining an area with the imaging lengths exceeding a set value as a first performance area, determining an area with the imaging lengths not exceeding the set value as a second performance area, wherein the first performance area can be represented as that the surface smoothness of the aluminum alloy ingot is unqualified, and the second performance area can be represented as that the surface smoothness of the aluminum alloy ingot is qualified.
The method for displaying the detection point on the equal slope detection surface by using the light generator through an equivalent alternative mode specifically comprises the following steps:
emitting parallel light beams to each group of actually measured distribution detection surfaces through a light generator;
selecting a group of equal slope detection surfaces, and adjusting the included angle between the light beam of the light generator and the inclined average value of the inclined surfaces of the group of equal slope detection surfaces to be a; therefore, the measurement error can be reduced to the greatest extent, and the angle adjustment of the light generator, which can be selected from the average value, can be applied to each actually measured distribution detection surface in the group of equal slope detection surfaces, so that the measurement can detect the detection point conditions of more areas.
Then, the protruding height g=tana×the imaging length of the detection point.
Specifically, the displaying the image of the detection point on the equal slope detection surface by using the light generator in an equivalent alternative mode, and recording the imaging length after displaying the image of the detection point includes:
acquiring a starting point position of an image and a falling point position of the image, and calculating the distance between the starting point position and the falling point position as an imaging length;
marking a detection point of which the imaging length exceeds a set value; when some area detection points are dense, an image of a certain detection point may be projected on another detection point, so that it is difficult for a visual detection mechanism to distinguish whether the detection points are coincident, and when the influence of the two detection points has a overlapped part, referring specifically to the situation illustrated in fig. 5, the partially coincident image becomes long, and the actual side length is due to the coincidence of the images, so that the phenomenon needs to be treated differently, in order to further determine whether the detection point exceeding the set value is generated due to the partially coincident reason;
the specific operation mode is as follows:
adjusting the irradiation direction of the light generator, ensuring that the included angle between the light beam of the light generator and the inclined average value of the inclined planes of the group of equal-slope detection surfaces is a, and prompting the falling point direction of the detection point to fall in the null point area;
measuring the detection point of which the imaging length exceeds a set value again;
if the imaging length still exceeds the set value, the area where the detection point is located is marked as a first performance area, otherwise, the area is marked as a second performance area.
Further, the step of causing the falling point direction of the detection point to fall on the null point area specifically includes:
marking the starting point position of the imaging length exceeding the set value, establishing a circular identification area by taking the imaging length as a radius, marking the circle as c, and recording the position of a detection point in the radius range; referring specifically to fig. 6, there are 4 detection point positions within the radius range in fig. 6;
selecting a target line segment, wherein one end point of the target line segment is coincident with the starting point position of the imaging length exceeding a set value, the other end point is intersected with the circle c, and meanwhile, the target line segment is not coincident with other detection point positions; referring specifically to the example of the target line segment in fig. 7;
adjusting the irradiation direction of the light generator, ensuring the included angle between the light beam of the light generator and the inclined average value of the inclined planes of the group of equal-slope detection surfaces to be a, and promoting the image of the measuring point to be projected on the target line segment.
Because one end point of the target line segment is overlapped with the starting point position of the imaging length exceeding the set value, and the other end point is intersected with the circle c, and meanwhile, the target line segment is not overlapped with other detection point positions, an image formed by the detection point after the parallel light irradiation angle is adjusted can not be overlapped with other monitoring points, and therefore the fact that the image length detected by the visual detection mechanism exactly represents the actual image distance of the detection point can be guaranteed, and misjudgment phenomenon is reduced to a certain extent.
By adjusting the irradiation direction of the light generator and promoting the adjusted influence to fall on the target line segment, the target line segment does not cover other detection points in the range near the detection point, and measurement errors caused by partial overlapping influence are avoided.
According to the method, the degree of protrusion of the detection point on the top surface of the aluminum alloy ingot can be finally measured through the inflection point information on the first extension line, and correspondingly, the degree of protrusion of the detection point on the bottom surface of the aluminum alloy ingot can be finally measured through the inflection point information on the second extension line.
A system for a performance testing method of an aluminum alloy, comprising:
a carrier for carrying the aluminum alloy;
a light generator for generating parallel light rays;
and a vision acquisition module for acquiring and calculating an imaging length;
and the controller is used for controlling the light generator and the vision acquisition module to work.
The controller is in communication connection with a memory storing instructions executable by the controller to enable the processor to perform the performance detection method for aluminum alloys described above;
the disclosed embodiments also provide a non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the performance detection method for aluminum alloys in the foregoing method embodiments.
More specific examples of a computer readable storage medium could include a portable computer diskette, a hard disk, an erasable programmable read-only memory (EPROM or flash memory), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer-readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device, the computer-readable medium being embodied in the electronic device; or may exist alone without being incorporated into the electronic device.
The computer readable medium carries one or more programs which, when executed by the electronic device, enable the electronic device to implement the solutions provided by the method embodiments described above.
Computer program code for carrying out operations of the present disclosure may be written in one or more programming languages, or combinations thereof, and the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (9)
1. The performance detection method for the aluminum alloy is characterized by comprising the following steps of:
s1, determining a surface to be detected of aluminum alloy, dividing the surface to be detected according to inclination, and dividing the surface to be detected into a plurality of actually measured partial detection surfaces;
s2, setting an inclination threshold, grouping the actually measured distribution detection surfaces according to the inclination threshold, and regarding the actually measured distribution detection surfaces within the same inclination threshold as equal slope detection surfaces which are arranged in parallel to form the same group;
s3, measuring the slope average value of each group of equal slope detection surfaces;
s4, displaying the detection points on the equal-slope detection surface in an imaging mode by using an equivalent substitution mode, recording imaging lengths of the detection points after displaying the detection points in an imaging mode, calculating the clear height of the detection points by the imaging lengths, determining an area with the imaging lengths exceeding a set value as a first performance area, and determining an area with the imaging lengths not exceeding the set value as a second performance area.
2. The performance inspection method for aluminum alloy according to claim 1, wherein the dividing the surface to be inspected according to the inclination comprises the steps of:
selecting an adjacent surface perpendicular to the surface to be detected of the aluminum alloy as an inclination planning surface;
establishing a plane rectangular coordinate system xoy according to the gradient planning plane;
obtaining connecting lines of the upper side and the lower side of the gradient planning surface, respectively marking the connecting lines as a first extension line and a second extension line, marking inflection point coordinates of the first extension line and the second extension line, wherein the inflection point coordinates of the first extension line correspond to the inflection point coordinates of the second extension line one by one;
dividing the surface to be detected into a plurality of subsection detection surfaces according to coordinates of each inflection point on the first extension line;
and calculating the slope of coordinates of two adjacent inflection points on the first extension line, and calculating the inclination angle of the corresponding distribution detection surface.
3. The method for detecting the performance of an aluminum alloy according to claim 2, wherein calculating the slope of coordinates of two adjacent inflection points on the first extension line for calculating the inclination angle of the distribution detecting surface corresponding thereto specifically includes:
acquiring a slope correction line;
the connecting line of coordinates of two adjacent inflection points on the first extension line is regarded as a slope correction line, the length of the slope correction line is marked as L, a perpendicular bisector of the slope correction line is made and is intersected with the first extension line, and the intersection point is marked as a slope correction point;
calculating the distance between the slope correction point and the slope correction line, and marking the distance as H;
if it isAnd (2) 0.01, the slope of the slope correction line is recorded as the inclination angle of the distribution detection surface, and the distribution detection surface is regarded as the actually measured distribution detection surface.
4. The method for detecting the properties of an aluminum alloy according to claim 3, wherein ifDividing the distribution detection surface into two sections by taking the slope correction point as a limit, and respectively marking the two sections as a first distribution detection surface and a second distribution detection surface;
and regarding the first distribution detection surface and the second distribution detection surface as two actually measured distribution detection surfaces, calculating the inclination of the inclination correction point and coordinates of two adjacent inflection points, and respectively corresponding to the inclination angles of the two actually measured distribution detection surfaces.
5. The method for detecting the properties of an aluminum alloy according to claim 4, wherein,
integrating the inclination angles of all the actually measured distribution detection surfaces;
grouping a plurality of actually measured distribution detection surfaces according to the difference value between the inclination angles, wherein the inclination angle difference value of any two actually measured distribution detection surfaces in the same group is smaller than or equal to an inclination threshold value;
the tilt threshold is set to 5 °.
6. The method for detecting the property of an aluminum alloy according to any one of claims 1 to 5, wherein displaying the detected points on the equal slope detection surface by an equivalent substitution means using a light generator specifically comprises:
emitting parallel light beams to each group of actually measured distribution detection surfaces through a light generator;
selecting a group of equal slope detection surfaces, and adjusting the included angle between the light beam of the light generator and the inclined average value of the inclined surfaces of the group of equal slope detection surfaces to be a;
then, the protruding height g=tana×the imaging length of the detection point.
7. The method of claim 6, wherein displaying the detection points on the equal slope detection surface by using the light generator in an equivalent substitution manner, and recording the imaging length after displaying the detection points comprises:
acquiring a starting point position of an image and a falling point position of the image, and calculating the distance between the starting point position and the falling point position as an imaging length;
marking a detection point of which the imaging length exceeds a set value;
adjusting the irradiation direction of the light generator, ensuring that the included angle between the light beam of the light generator and the inclined average value of the inclined planes of the group of equal-slope detection surfaces is a, and prompting the falling point direction of the detection point to fall in the null point area;
measuring the detection point of which the imaging length exceeds a set value again;
if the imaging length still exceeds the set value, the area where the detection point is located is marked as a first performance area, otherwise, the area is marked as a second performance area.
8. The method for detecting the property of an aluminum alloy according to claim 7, wherein the causing of the falling point direction of the detection point to fall in the empty point region specifically comprises:
marking the starting point position of the imaging length exceeding the set value, establishing a circular identification area by taking the imaging length as a radius, marking the circle as c, and recording the position of a detection point in the radius range;
selecting a target line segment, wherein one end point of the target line segment is coincident with the starting point position of the imaging length exceeding a set value, the other end point is intersected with the circle c, and meanwhile, the target line segment is not coincident with other detection point positions;
adjusting the irradiation direction of the light generator, ensuring the included angle between the light beam of the light generator and the inclined average value of the inclined planes of the group of equal-slope detection surfaces to be a, and promoting the image of the measuring point to be projected on the target line segment.
9. A system for implementing the performance inspection method for aluminum alloy according to claim 8, comprising:
a carrier for carrying the aluminum alloy;
a light generator for generating parallel light rays;
and a vision acquisition module for acquiring and calculating an imaging length;
and the controller is used for controlling the light generator and the vision acquisition module to work.
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