CN111200723A - Progressive die arch material monitoring method, device, equipment and storage medium - Google Patents
Progressive die arch material monitoring method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention provides a progressive die arch material monitoring method, device, equipment and storage medium, and relates to the technical field of progressive dies. The method comprises the following steps: acquiring an image of an area corresponding to the image acquisition equipment on a material belt acquired by the image acquisition equipment; establishing a reference line and a monitoring area on the image, wherein the monitoring area comprises: a strip area to be monitored; monitoring the monitoring area according to the reference line and by adopting a preset measuring caliper to obtain the boundary of the stock belt area and a height value corresponding to the boundary; and determining whether the strip area has arch or not according to the height value corresponding to the boundary and a preset reference height. By applying the embodiment of the invention, the labor cost and the time cost can be reduced.
Description
Technical Field
The invention relates to the technical field of progressive dies, in particular to a method, a device, equipment and a storage medium for monitoring progressive die arching.
Background
The progressive die consists of a plurality of stations, the stations are related to each other in sequence to finish different processing, and a series of different punching processing is finished in one stroke of the punching machine. After one stroke is finished, the material is moved forward by a punch feeder according to a fixed step pitch, so that a plurality of processes can be finished on a pair of dies, generally comprising punching, blanking, bending, trimming, deep drawing and the like.
However, in the processing process, the material belt is arched due to the reasons that the mold and the material belt cannot be separated in time, the material belt is positioned, locked by the pin and the like. This phenomenon can lead to material scrap and even die damage, increasing processing costs.
Currently, whether the strip of material is arched or not is monitored in a manual mode, however, the mode increases the labor cost and the time cost for monitoring whether the strip of material is arched or not.
Disclosure of Invention
The present invention is directed to provide a method, an apparatus, a device and a storage medium for monitoring arching of a progressive die, so as to reduce labor cost and time cost for monitoring whether a strip of material is arched.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a progressive die arching monitoring method, where the method includes:
acquiring an image of an area corresponding to image acquisition equipment on a material belt acquired by the image acquisition equipment;
establishing a reference line and a monitoring area on the image, wherein the monitoring area comprises: a strip area to be monitored;
monitoring the monitoring area according to the reference line and by adopting a preset measuring caliper to obtain the boundary of the stock belt area and a height value corresponding to the boundary;
and determining whether the strip area is arched or not according to the height value corresponding to the boundary and a preset reference height.
Optionally, the establishing a reference line and a monitoring region on the image includes:
performing feature extraction on the image, and determining the material belt area in the image;
and establishing the reference line and the monitoring area on the image according to a preset maximum height of the upper mold and a preset height of the lower mold, wherein the deviation between the reference line and the maximum height of the upper mold is smaller than a preset height difference, and the monitoring area is an area surrounded by the preset maximum height of the upper mold and the preset height of the lower mold.
Optionally, the monitoring area according to the reference line and by using a preset measuring caliper to obtain the boundary of the belt area and a height value corresponding to the boundary includes:
taking the reference line as a reference position, and adopting the measuring caliper to monitor the monitoring area up and down;
if a light and dark boundary is monitored, determining that the light and dark boundary is the boundary of the material belt region, and determining that the height of the light and dark boundary is the height value corresponding to the boundary.
Optionally, the monitoring area according to the reference line and by using a preset measuring caliper to obtain the boundary of the belt area and a height value corresponding to the boundary includes:
according to the reference line, adopting N groups of measuring calipers to measure the monitoring area respectively to obtain the boundary of the stock belt area and N groups of height values on the boundary; each group of height values corresponds to a group of measuring calipers; n is an integer greater than or equal to 1;
correspondingly, the determining whether the strip area is arched according to the height value corresponding to the boundary and a preset reference height includes:
and determining whether the strip area has arch or not according to the N groups of height values and the preset reference height.
Optionally, the determining, by the preset reference height and the N groups of height values, whether the strip area is arched includes:
comparing the N sets of height values with the absolute height respectively;
if at least one height value in the N groups of height values is larger than or equal to the absolute height, determining that the strip area has arching;
and if the N groups of height values are all smaller than the absolute height, determining that the strip area does not have arch.
Optionally, if N is an integer greater than 2, the preset reference height is a preset relative height, and determining whether the strip area has a camber according to the N groups of height values and the preset reference height includes:
determining the maximum value and the minimum value in the N groups of height values, and removing the maximum value and the minimum value in the N groups of height values to obtain N-2 groups of height values;
determining an average height value of the N-2 sets of height values;
respectively determining the height difference between the N-2 groups of height values and the average height value to obtain N-2 height differences;
comparing the N-2 height differences with the relative heights respectively;
if at least one height difference in the N-2 height differences is larger than or equal to the relative height, determining that the strip area has arching;
and if the N-2 height differences are smaller than the relative height, determining that the strip area does not have arching.
Optionally, the method further comprises:
and if the strip area has the camber, generating a stop signal to control the punching machine to stop working.
In a second aspect, an embodiment of the present invention further provides a progressive die arching monitoring device, where the device includes:
the acquisition module is used for acquiring an image of an area corresponding to the image acquisition equipment on a material belt acquired by the image acquisition equipment;
the establishing module is used for establishing a reference line and a monitoring area on the image, and the monitoring area comprises: a strip area to be monitored;
the monitoring module is used for monitoring the monitoring area according to the reference line and by adopting a preset measuring caliper to obtain the boundary of the belt area and the height value corresponding to the boundary;
and the determining module is used for determining whether the strip area is arched or not according to the height value corresponding to the boundary and a preset reference height.
Optionally, the establishing module is specifically configured to:
performing feature extraction on the image, and determining the material belt area in the image;
and establishing the reference line and the monitoring area on the image according to a preset maximum height of the upper mold and a preset height of the lower mold, wherein the deviation between the reference line and the maximum height of the upper mold is smaller than a preset height difference, and the monitoring area is an area surrounded by the preset maximum height of the upper mold and the preset height of the lower mold.
Optionally, the monitoring module is specifically configured to:
taking the reference line as a reference position, and adopting the measuring caliper to monitor the monitoring area up and down;
if a light and dark boundary is monitored, determining that the light and dark boundary is the boundary of the material belt region, and determining that the height of the light and dark boundary is the height value corresponding to the boundary.
Optionally, the monitoring module is further specifically configured to:
according to the reference line, adopting N groups of measuring calipers to measure the monitoring area respectively to obtain the boundary of the stock belt area and N groups of height values on the boundary; each group of height values corresponds to a group of measuring calipers; n is an integer greater than or equal to 1;
correspondingly, the determining module is specifically configured to:
and determining whether the strip area has arch or not according to the N groups of height values and the preset reference height.
Optionally, when the preset reference height is a preset absolute height, the determining module is specifically configured to:
comparing the N sets of height values with the absolute height respectively;
if at least one height value in the N groups of height values is larger than or equal to the absolute height, determining that the strip area has arching;
and if the N groups of height values are all smaller than the absolute height, determining that the strip area does not have arch.
Optionally, if N is an integer greater than 2, and the preset reference height is a preset relative height, the determining module is specifically configured to:
determining the maximum value and the minimum value in the N groups of height values, and removing the maximum value and the minimum value in the N groups of height values to obtain N-2 groups of height values;
determining an average height value of the N-2 sets of height values;
respectively determining the height difference between the N-2 groups of height values and the average height value to obtain N-2 height differences;
comparing the N-2 height differences with the relative heights respectively;
if at least one height difference in the N-2 height differences is larger than or equal to the relative height, determining that the strip area has arching;
and if the N-2 height differences are smaller than the relative height, determining that the strip area does not have arching.
Optionally, the apparatus further comprises:
and the generating module is used for generating a stop signal to control the punching machine to stop working if the strip area has the arch.
In a third aspect, an embodiment of the present invention further provides a control device, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor implements the steps of any one of the above progressive die arch monitoring methods when executing the computer program.
In a fourth aspect, an embodiment of the present invention further provides a storage medium, where the storage medium stores a computer program, and the computer program is executed by a processor to perform any of the steps of the progressive die arching monitoring method.
The invention has the beneficial effects that:
the embodiment of the invention provides a method, a device, equipment and a storage medium for monitoring progressive die arch, which comprises the steps of firstly obtaining an image of a corresponding area of the equipment through image acquisition equipment, then establishing a reference line and a monitoring area on the image, wherein the monitoring area comprises a strip area to be monitored, finally monitoring the monitoring area according to the reference line and a preset measuring caliper to obtain a boundary of the strip area and a height value corresponding to the boundary, and determining whether the strip area has arch or not according to the height value corresponding to the boundary and a preset reference height. By adopting the progressive die arching monitoring method provided by the embodiment of the invention, the reference line and the monitoring area are established on the obtained image, the characteristics on the image can be displayed in the monitoring area, then the preset measuring caliper is established in the monitoring area, the height value corresponding to the boundary of the strip area in the monitoring area can be detected by using the reference line and the preset measuring caliper, and the preset height can be the critical height of the strip arching according to the height value corresponding to the boundary and the preset reference height, so that whether the strip area has the arching phenomenon or not can be determined. The method can reduce the labor cost and the time cost when monitoring whether the material belt on the progressive die is arched or not.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a progressive die crown monitoring system provided in an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a progressive die arching monitoring method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a target image without arching according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a target image with a material arching phenomenon according to an embodiment of the present invention;
FIG. 5 is a schematic view of a target image without arching phenomenon when a reference line and a measuring caliper are provided in an embodiment of the present invention;
FIG. 6 is a schematic diagram of a target image with a material arching phenomenon when a reference line and a measuring caliper are provided according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a progressive die crown monitoring device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a control device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The progressive die arching monitoring method provided by the invention can be applied to a system shown in figure 1. As shown in fig. 1, for a schematic view of a progressive die arching monitoring system provided by an embodiment of the present invention, the progressive die arching monitoring system shown in fig. 1 includes: the monitoring device comprises image acquisition equipment 101, a backlight source 102, control equipment 103, a material belt 104 and alarm equipment 105, wherein the image acquisition equipment 101 is located on one side of the material belt 104 to be monitored, a light emitting surface of the backlight source 102 faces an image acquisition surface of the image acquisition equipment 101 and is located on the other side of the material belt 104 to be monitored, and the control equipment 103 is connected with the image acquisition equipment 101 and the alarm equipment 105. Specifically, the number of cameras in the image capturing Device 101 is at least one, and the camera type may be any one of industrial cameras, such as a CCD (Charge Coupled Device) camera. Cameras in the image acquisition equipment 101 can be arranged on a support side by side, the plane of the support is parallel to the plane of the material belt 104 to be monitored, the cameras in the image acquisition equipment 101 can be respectively connected with the control equipment 103, the control equipment 103 can process images acquired by a plurality of cameras in parallel, the control equipment 103 stores a program for processing the images acquired by the image acquisition equipment 101, before the program runs, individual parameters in a configuration file can be set, when the monitored material belt 104 has an arching phenomenon, the control equipment 103 generates an alarm signal, the alarm equipment 105 can be enabled to send out an alarm sound, and a worker is reminded that the material belt 104 on the progressive die has the arching phenomenon.
The progressive die arching monitoring method provided by the embodiments of the invention described below can be implemented by the control device 103 in the progressive die arching monitoring system shown in fig. 1. Fig. 2 is a schematic flow chart of a progressive die arching monitoring method according to an embodiment of the present invention, and as shown in fig. 2, the method may include:
s201, acquiring an image of a corresponding area of the image acquisition equipment on a material belt acquired by the image acquisition equipment.
The image capturing device is the image capturing device 101 shown in fig. 1, and may include at least one industrial camera, where the type of the industrial camera in the image capturing device is not limited, and may be a CCD camera. After detecting a camera instruction for starting the image acquisition equipment, the camera in the image acquisition equipment acquires an image of a corresponding area. For example, there are 4 cameras in the image capturing device, and the cameras may be numbered according to the direction of tape conveying, such as camera 1, camera 2, camera 3, and camera 4, where each camera is responsible for capturing area images of 14 stations, and the images may include a tape conveying table, an upper mold, a lower mold, and a tape, and the like, where the number of stations for each camera to capture a corresponding area may be different, and is not limited herein.
S202, establishing a reference line and a monitoring area on the image, wherein the monitoring area comprises: the area of the strip to be monitored.
Specifically, before establishing the reference line and the monitoring area on the image, the image is preprocessed, so that features in the image can be extracted to obtain a high-contrast image, and interference pixels of the high-contrast image are removed to obtain a target image, wherein the features in the target image can include a material belt conveying table area, a material belt area, a mold area, a cavity area and the like. Fig. 3 is a schematic diagram of an object image without material arching according to an embodiment of the present invention, where fig. 3 includes a material belt conveying area 301, a material belt area 302, and a cavity area 303, where the mold area is not labeled in the drawing. Fig. 4 is a schematic diagram of a target image with a material arching phenomenon according to an embodiment of the present invention, which is substantially the same as the structure in fig. 3, and mainly differs from the material belt region 302 in that the material arching phenomenon occurs.
Establishing a reference line and a monitoring area on a target image, wherein the reference line and the monitoring area are established on the target image according to the preset maximum height of an upper die and the preset height of a lower die, the deviation between the reference line and the maximum height of the upper die is smaller than the preset height difference, and the monitoring area is an area surrounded by the preset maximum height of the upper die and the preset height of the lower die. In this embodiment, before the monitoring starts, parameters of a monitoring area may be set, and the upper edge of the monitoring area may be an average maximum height of the upper mold when the upper mold is located at a time of no arch phenomenon after multiple tests; the lower edge of the monitoring area can be the average height of the lower die when no arch material phenomenon is obtained after multiple tests; the left edge and the right edge of the monitoring area are set according to actual requirements, the left edge can be the starting end of a target image or other positions, the position of the reference line is related to the upper edge of the monitoring area, and if the position height of the upper edge is h and the preset height difference is 1mm, the position height of the reference line is (h +1) mm.
S203, monitoring the monitoring area according to the reference line and by adopting a preset measuring caliper to obtain the boundary of the stock belt area and the height value corresponding to the boundary.
Specifically, the reference line is used as a reference position, the measuring caliper is used for monitoring the monitoring area up and down, if a light and dark boundary is monitored, the light and dark boundary is determined to be the boundary of the material belt area, and the height of the light and dark boundary is determined to be the height value corresponding to the boundary. Fig. 5 is a schematic diagram of a target image without a material arching phenomenon when a reference line and a measuring caliper are provided according to an embodiment of the present invention, where fig. 5 includes a reference line 501 and a measuring caliper 502, and other portions are the same as the structure in fig. 3, a cavity region 303 is equivalent to a bright region, and other regions are equivalent to dark regions. Fig. 6 is a schematic diagram of a target image with a crowning phenomenon when a reference line and a measuring caliper are provided according to an embodiment of the present invention, which is basically the same as the structure in fig. 7, and the main difference is that the belt region 302 is the crowning phenomenon.
And taking the reference line as a reference position, starting from the position of the reference line, monitoring the monitoring area by the measuring caliper from the upper edge of the monitoring area to the lower edge of the monitoring area in sequence, when the transition from the bright boundary to the dark boundary is monitored, proving that the material belt area is monitored, and determining the height value corresponding to the boundary by referring to the measuring caliper.
And S204, determining whether the strip area is arched or not according to the height value corresponding to the boundary and a preset reference height.
Specifically, after calculating the corresponding height value of the monitored stock belt region on the measuring caliper, a preset reference height can be called to judge whether the stock belt region has a hump phenomenon, and the preset reference height can be set according to the standard of the progressive die.
By adopting the progressive die arching monitoring method shown in fig. 2, the characteristics on the image can be displayed in the monitoring area by establishing the reference line and the monitoring area on the acquired image, then the preset measuring caliper is established in the monitoring area, the height value corresponding to the boundary of the discharging belt area in the monitoring area can be detected by utilizing the reference line and the preset measuring caliper, and the preset height can be the critical height of the arching of the discharging belt according to the height value corresponding to the boundary and the preset reference height, so that whether the arching phenomenon exists in the discharging belt area can be determined. The method can reduce the labor cost and the time cost when monitoring whether the material belt on the progressive die is arched or not.
Further, in an embodiment, the monitoring area is monitored according to the reference line and by using a preset measuring caliper, so as to obtain the boundary of the stock belt area and the height value corresponding to the boundary, which may be performed in the following manner:
according to the reference line, N groups of measuring calipers are adopted to measure the monitoring area respectively to obtain the boundary of the stock belt area and N groups of height values on the boundary; each group of height values corresponds to a group of measuring calipers; n is an integer greater than or equal to 1, wherein, the quantity N of measuring caliper can be set according to the demand, and in the same monitoring area, N is bigger, and the measuring result can be more accurate.
Correspondingly, determining whether the strip area has an arch or not according to the height value corresponding to the boundary and a preset reference height, includes:
and determining whether the strip area has camber or not according to the N groups of height values and the preset reference height.
Further, whether the strip area has the phenomenon of arching can be determined in the following two ways:
first, e.g. the preset referenceThe height is a preset absolute height T, T can be 10mm, and then the height is determined according to N groups of height values { XnAnd determining whether the strip area has a camber or not by the preset reference height, wherein the determining may include:
first, the height values { X of N groups are respectively alignedn-comparing with an absolute height T, wherein N equals N; if N sets of height values { XnDetermining that the strip area is arched if at least one height value is larger than or equal to the absolute height T; if N sets of height values { XnAnd all the sections are smaller than the absolute height T, determining that the strip area does not have arch.
Second, for example, if the predetermined reference height is a predetermined relative height D, the height values { X ] are determined according to N sets of height valuesnAnd determining whether the strip area has a camber or not by the preset reference height, wherein the determining may include:
first, determine N sets of height values { XnMaximum value X inmaxAnd minimum value XminAnd removing N sets of height values { X }nMaximum value X inmaxAnd minimum value XminWherein N is equal to N, to obtain N-2 sets of height values { Xn-2}; then, N-2 sets of height values { X ] are determinedn-2Mean height value X of }mean(ii) a Separately determine N-2 sets of height values { Xn-2And an average height value XmeanTo obtain N-2 height differences { X }n-2}diff(ii) a Finally, respectively aligning N-2 height differences { Xn-2}diffAnd the relative height D; if N-2 height differences { Xn-2}diffIf at least one height difference is larger than or equal to the relative height D, determining that the strip area has the camber; if N-2 height differences { Xn-2}diffAnd if the height is less than the relative height D, determining that the strip area has no camber.
Furthermore, if the strip area has the arch, a stop signal is generated to control the punching machine to stop working, and when the strip area has the arch, an alarm signal can be generated to control the alarm device to give an alarm, so that a worker can be reminded that the strip on the progressive die has the arch phenomenon, and the working efficiency of the worker can be improved.
Fig. 7 is a schematic structural diagram of a progressive die arching monitoring device according to an embodiment of the present invention, and as shown in fig. 7, the device may include:
the acquisition module 701 is used for acquiring an image of an area corresponding to the image acquisition device on the material belt acquired by the image acquisition device;
an establishing module 702, configured to establish a reference line and a monitoring area on the image, where the monitoring area includes: a strip area to be monitored;
the monitoring module 703 is configured to monitor the monitoring area according to the reference line and by using a preset measuring caliper, so as to obtain a boundary of the strip area and a height value corresponding to the boundary;
and a determining module 704, configured to determine whether the strip area has an arch according to the height value corresponding to the boundary and a preset reference height.
Further, the establishing module 702 is specifically configured to:
performing feature extraction on the image, and determining the material belt area in the image;
and establishing a reference line and a monitoring area on the image according to the preset maximum height of the upper die and the preset height of the lower die, wherein the deviation between the reference line and the maximum height of the upper die is smaller than a preset height difference, and the monitoring area is an area surrounded by the preset maximum height of the upper die and the preset height of the lower die.
Further, the monitoring module 703 is specifically configured to:
taking the reference line as a reference position, and adopting a measuring caliper to monitor the monitoring area up and down;
if the light and dark boundary is monitored, determining that the light and dark boundary is the boundary of the material belt area, and determining that the height of the light and dark boundary is the height value corresponding to the boundary.
Further, the monitoring module 703 is further specifically configured to:
according to the reference line, N groups of measuring calipers are adopted to measure the monitoring area respectively to obtain the boundary of the stock belt area and N groups of height values on the boundary; each group of height values corresponds to a group of measuring calipers; n is an integer greater than or equal to 1.
Further, the determining module 704 is specifically configured to:
and determining whether the strip area has camber or not according to the N groups of height values and the preset reference height.
Further, when the preset reference height is a preset absolute height, the determining module 704 is specifically configured to:
respectively comparing the N groups of height values with the absolute height;
if at least one height value in the N groups of height values is larger than or equal to the absolute height, determining that the strip area is arched;
and if the N groups of height values are all smaller than the absolute height, determining that the strip area has no camber.
Optionally, if N is an integer greater than 2, and the preset reference height is a preset relative height, the determining module 704 is specifically configured to:
determining the maximum value and the minimum value in the N groups of height values, and removing the maximum value and the minimum value in the N groups of height values to obtain N-2 groups of height values;
determining an average height value of the N-2 groups of height values;
respectively determining the height difference between the N-2 groups of height values and the average height value to obtain N-2 height differences;
respectively comparing the N-2 height differences with the relative height;
if at least one height difference in the N-2 height differences is larger than or equal to the relative height, determining that the strip area has arching;
and if the N-2 height differences are all smaller than the relative height, determining that the strip area has no camber.
Further, the apparatus further comprises: and the generation module is used for generating a stop signal to control the punching machine to stop working if the strip area has the arch.
The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Fig. 8 is a control device provided in an embodiment of the present invention, including: memory 801, processor 802. The control device may be a computer device or a server having a control function.
The memory 801 is used for storing a computer program that is executable on the processor 802, and the processor 802 is used for implementing the above-mentioned method embodiments when executing the computer program. The specific implementation and technical effects are similar, and are not described herein again.
Optionally, the present invention also provides a storage medium, for example a computer-readable storage medium, comprising a program which, when executed by a processor, is adapted to perform the above-described method embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be 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. Also, 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A progressive die arching monitoring method, characterized in that the method comprises:
acquiring an image of an area corresponding to image acquisition equipment on a material belt acquired by the image acquisition equipment;
establishing a reference line and a monitoring area on the image, wherein the monitoring area comprises: a strip area to be monitored;
monitoring the monitoring area according to the reference line and by adopting a preset measuring caliper to obtain the boundary of the stock belt area and a height value corresponding to the boundary;
and determining whether the strip area is arched or not according to the height value corresponding to the boundary and a preset reference height.
2. The method of claim 1, wherein said establishing a reference line and a monitoring area on said image comprises:
performing feature extraction on the image, and determining the material belt area in the image;
and establishing the reference line and the monitoring area on the image according to a preset maximum height of the upper mold and a preset height of the lower mold, wherein the deviation between the reference line and the maximum height of the upper mold is smaller than a preset height difference, and the monitoring area is an area surrounded by the preset maximum height of the upper mold and the preset height of the lower mold.
3. The method of claim 1, wherein the monitoring area according to the reference line and by using a preset measuring caliper to obtain the boundary of the stock belt area and the height value corresponding to the boundary comprises:
taking the reference line as a reference position, and adopting the measuring caliper to monitor the monitoring area up and down;
if a light and dark boundary is monitored, determining that the light and dark boundary is the boundary of the material belt region, and determining that the height of the light and dark boundary is the height value corresponding to the boundary.
4. The method of any one of claims 1-3, wherein the monitoring area according to the reference line and by using a preset measuring caliper to obtain the boundary of the stock belt area and the height value corresponding to the boundary comprises:
according to the reference line, adopting N groups of measuring calipers to measure the monitoring area respectively to obtain the boundary of the stock belt area and N groups of height values on the boundary; each group of height values corresponds to a group of measuring calipers; n is an integer greater than or equal to 1;
correspondingly, the determining whether the strip area is arched according to the height value corresponding to the boundary and a preset reference height includes:
and determining whether the strip area has arch or not according to the N groups of height values and the preset reference height.
5. The method of claim 4, wherein said predetermined reference height is a predetermined absolute height, and said determining whether there is camber in said swathe area based on said N sets of height values and said predetermined reference height comprises:
comparing the N sets of height values with the absolute height respectively;
if at least one height value in the N groups of height values is larger than or equal to the absolute height, determining that the strip area has arching;
and if the N groups of height values are all smaller than the absolute height, determining that the strip area does not have arch.
6. The method of claim 4, wherein if N is an integer greater than 2, the predetermined reference height is a predetermined relative height, and wherein determining whether or not the strip region has camber based on the N sets of height values and the predetermined reference height comprises:
determining the maximum value and the minimum value in the N groups of height values, and removing the maximum value and the minimum value in the N groups of height values to obtain N-2 groups of height values;
determining an average height value of the N-2 sets of height values;
respectively determining the height difference between the N-2 groups of height values and the average height value to obtain N-2 height differences;
comparing the N-2 height differences with the relative heights respectively;
if at least one height difference in the N-2 height differences is larger than or equal to the relative height, determining that the strip area has arching;
and if the N-2 height differences are smaller than the relative height, determining that the strip area does not have arching.
7. The method of claim 1, further comprising:
and if the strip area has the camber, generating a stop signal to control the punching machine to stop working.
8. A progressive die arching monitoring device, the device comprising:
the acquisition module is used for acquiring an image of an area corresponding to the image acquisition equipment on a material belt acquired by the image acquisition equipment;
the establishing module is used for establishing a reference line and a monitoring area on the image, and the monitoring area comprises: a strip area to be monitored;
the monitoring module is used for monitoring the monitoring area according to the reference line and by adopting a preset measuring caliper to obtain the boundary of the belt area and the height value corresponding to the boundary;
and the determining module is used for determining whether the strip area is arched or not according to the height value corresponding to the boundary and a preset reference height.
9. A control device, comprising a memory, a processor, a computer program being stored in the memory and being executable on the processor, the processor implementing the steps of the method of any of the preceding claims 1 to 7 when executing the computer program.
10. A storage medium, characterized in that the storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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