A gypsum board online detection conveying control method, system, device and medium

Abstract

The application discloses a gypsum board online detection conveying control method, system, equipment and medium, relates to the gypsum board conveying technical field, and includes the following steps: controlling the undulating gypsum board to move on the conveyor in a set posture; acquiring pressure change data of the undulating gypsum board when passing through a detection position; judging whether the undulating gypsum board is deformed according to the pressure change data; if yes, conveying the undulating gypsum board to a defective product area; if not, acquiring thickness uniformity of the undulating gypsum board at each detection point position, judging whether the thickness uniformity is up to standard; if yes, conveying the undulating gypsum board to a finished product area; if not, conveying the undulating gypsum board to the defective product area, and the application has the advantages that defects such as deformation and thickness uniformity of the undulating gypsum board can be detected online.

Description

Technical Field

[0001] This application relates to the field of gypsum board conveying technology, and in particular to a method, system, equipment and medium for online detection, conveying and control of gypsum board. Background Technology

[0002] Gypsum board is a building material made primarily from gypsum. During the manufacturing process, gypsum board needs to be transported to various storage areas via conveyors. During the transportation process, the gypsum board needs to be inspected for quality defects, and then classified and transported to qualified and defective areas for subsequent processing.

[0003] Currently, most gypsum boards are square boards. However, some custom-structured gypsum boards exist for specific applications. For example, a corrugated gypsum board needs to be prepared. The quality inspection indicators for corrugated gypsum boards mainly include whether the corrugation is deformed and the thickness is uniform. Due to its special structure, it is currently transported to the inspection area by a conveyor and then manually inspected using inspection tools. This results in low inspection efficiency, affecting not only the conveying efficiency but also the inspection accuracy. Summary of the Invention

[0004] The main objective of this application is to provide a method, system, equipment, and medium for online inspection and conveying control of gypsum board, aiming to solve the technical problem that it is difficult to achieve online inspection during the conveying of corrugated gypsum board.

[0005] To achieve the above objectives, this application provides an online inspection and conveying control method for gypsum board, comprising the following steps:

[0006] Control the corrugated gypsum board to move on the conveyor in a set posture; wherein, the set posture is that the crest of the corrugated gypsum board faces upward and is located in the center of the conveyor, and the length direction of the cavity formed by the bottom surface of the corrugated gypsum board and the top surface of the conveyor is parallel to the conveying direction.

[0007] The pressure change data of the corrugated gypsum board as it passes the detection position is obtained. The detection position is equipped with multiple pressure detectors arranged in a row to collect pressure data. The arrangement of the multiple pressure detectors is perpendicular to the conveying direction. The pressure detectors are used to contact different detection points on the bottom surface of the corrugated gypsum board.

[0008] Based on pressure change data, determine whether the corrugated gypsum board is deformed;

[0009] If yes, then control the corrugated gypsum board to be transported to the defective product area; if no, then obtain the thickness uniformity of the corrugated gypsum board at each test point and determine whether the thickness uniformity meets the standard.

[0010] If yes, control the corrugated plasterboard to be conveyed to the finished product area; otherwise, control the corrugated plasterboard to be conveyed to the defective product area.

[0011] Optionally, based on pressure change data, it can be determined whether the corrugated gypsum board is deformed, including:

[0012] Based on the pressure change data at different detection points, plot the corresponding pressure change curves;

[0013] Determine whether the pressure change curve is entirely within the preset pressure threshold range;

[0014] If so, then it is determined that the corrugated plasterboard is not deformed;

[0015] If not, then the corrugated plasterboard is determined to be deformed.

[0016] Optionally, the pressure detector includes a guide cylinder mounted on a support of the conveyor, a pressure sensor located at the bottom of the guide cylinder and a spring located at the top of the pressure sensor, a piston rod connected to the top of the spring, the piston rod extending movably out of the guide cylinder and movably connected to a ball bearing, the ball bearing being used to contact the bottom surface of the corrugated gypsum board.

[0017] Optionally, one detection point is set on the central axis of the bottom surface of the corrugated gypsum board, and at least two detection points are set on both sides of the central axis of the bottom surface of the corrugated gypsum board.

[0018] Optionally, the thickness uniformity of the corrugated gypsum board at each test point is obtained, and it is determined whether the thickness uniformity meets the standard, including:

[0019] The thickness uniformity of the corrugated gypsum board at the test point located on the central axis is obtained to determine whether the thickness uniformity of the top of the corrugated gypsum board meets the standard.

[0020] If not, the corrugated plasterboard is controlled to be transported to the defective product area; if yes, the thickness uniformity of the corrugated plasterboard at the detection points on both sides of the central axis is obtained to determine whether the thickness uniformity of the curved parts on both sides of the corrugated plasterboard meets the standard.

[0021] Optionally, a laser emitter is installed on the inner wall of the conveyor, facing the detection position. The laser emitted by the laser emitter is at the same height as the top of the standard corrugated plasterboard. A target plate for forming a laser spot is installed on the other inner wall of the conveyor.

[0022] To determine whether the thickness uniformity of the corrugated gypsum board at the test point located on the central axis meets the standard, the following steps are taken:

[0023] The pressure change curve is divided into upstream and / or downstream curves by using a pressure baseline; where the pressure baseline is the horizontal line of the central axis within the pressure threshold range.

[0024] If an upstream curve exists, determine whether a laser spot is continuously monitored within the time corresponding to the upstream curve. If not, determine that the thickness uniformity of the top of the wavy gypsum board does not meet the standard.

[0025] If a downstream curve exists, determine whether a laser spot is detected within the time corresponding to the downstream curve. If so, determine that the thickness uniformity of the top of the corrugated gypsum board does not meet the standard.

[0026] Optionally, multiple distance sensors at different heights are installed on both inner sidewalls of the conveyor, facing the detection position. The distance sensors are used to measure the distance to target points at different positions on the upper surface of the corrugated gypsum board, and the line connecting the target point and the detection point is a vertical line.

[0027] The thickness uniformity of the corrugated gypsum board is measured at the test points on both sides of the central axis to determine whether the thickness uniformity of the curved parts on both sides of the corrugated gypsum board meets the standard, including:

[0028] Acquire distance change data as the corrugated gypsum board passes the distance sensor;

[0029] The distance change data and pressure change data are combined to plot the ratio coefficient change curve; where the ratio coefficient is the ratio of the pressure data measured at the current time to the distance data.

[0030] Determine whether the ratio coefficient change curve is within the preset coefficient threshold range;

[0031] If yes, then the thickness uniformity of the curved parts on both sides of the wavy gypsum board is deemed to meet the standard; if no, then the thickness uniformity of the curved parts on both sides of the wavy gypsum board is deemed to not meet the standard.

[0032] To achieve the above objectives, this application also provides an online inspection and conveying control system for gypsum board, comprising:

[0033] The first control module is used to control the corrugated gypsum board to move on the conveyor in a set posture; wherein, the set posture is that the crest of the corrugated gypsum board faces upward and is located in the center of the conveyor, and the length direction of the cavity formed by the bottom surface of the corrugated gypsum board and the top surface of the conveyor is parallel to the conveying direction.

[0034] The pressure detection module is used to acquire pressure change data when the corrugated gypsum board passes through the detection position. The detection position is equipped with multiple pressure detectors arranged in a row to collect pressure data. The arrangement direction of the multiple pressure detectors is perpendicular to the conveying direction. The pressure detectors are used to contact different detection points on the bottom surface of the corrugated gypsum board.

[0035] The deformation detection module is used to determine whether the corrugated gypsum board is deformed based on pressure change data.

[0036] The data processing module is used to control the corrugated gypsum board to be transported to the defective product area if the condition is met, and to obtain the thickness uniformity of the corrugated gypsum board at each detection point if the condition is not met.

[0037] The second control module is used to control the corrugated gypsum board to be conveyed to the finished product area if yes, and to control the corrugated gypsum board to be conveyed to the defective product area if no.

[0038] To achieve the above objectives, this application also provides a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-described method.

[0039] To achieve the above objectives, this application also provides a computer-readable storage medium storing a computer program, wherein a processor executes the computer program to implement the above-described method.

[0040] The beneficial effects that this application can achieve are as follows:

[0041] This application utilizes a corrugated gypsum board that moves along a conveyor in a predetermined posture. The crests of the corrugated gypsum board always face upwards, creating a cavity between its bottom surface and the top surface of the conveyor. This cavity allows the bottom surface of the corrugated gypsum board to continuously contact multiple pressure detectors as it passes a detection position. This contact exerts pressure on the detectors, collecting pressure data. Online detection is completed when the bottom surface of the corrugated gypsum board slides out of the pressure detectors. During this process, multiple pressure detectors can collect real-time pressure change data at different locations on the bottom surface of the corrugated gypsum board. This allows for sampling and testing from multiple different locations on the bottom surface of the corrugated gypsum board. If overall or localized deformation is found, analysis of the pressure change data can reveal any corresponding anomalies, thus indirectly determining whether the corrugated gypsum board is deformed. The system detects deformation online with high efficiency and speed. If deformation is found, the corrugated gypsum board is conveyed to the defective product area. If not, further inspection is performed. At this point, the thickness uniformity of the corrugated gypsum board is measured at each inspection point to determine if the thickness uniformity meets the standard. If yes, the corrugated gypsum board is conveyed to the finished product area; otherwise, it is conveyed to the defective product area. This process sequentially completes the online detection of deformation and thickness uniformity of the corrugated gypsum board. The priority given to detecting deformation defects over thickness uniformity is because deformation defects are more intuitive and efficient to detect than thickness uniformity. Once deformation defects are detected, there is no need to perform thickness uniformity testing again, saving inspection time. By rationally planning the order of inspection indicators, the inspection efficiency can be further improved. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0043] Figure 1 This is a flowchart illustrating an online inspection and conveying control method for gypsum board according to an embodiment of this application;

[0044] Figure 2 This is a schematic diagram of a conveyor transporting corrugated gypsum board in an embodiment of this application;

[0045] Figure 3 This is a schematic diagram of the pressure detector structure in an embodiment of this application;

[0046] Figure 4 for Figure 2 Top view structural diagram (arrow direction indicates conveying direction);

[0047] Figure 5 For the corresponding Figure 4 A structural diagram with the wavy plasterboard concealed;

[0048] Figure 6 This is a schematic diagram of the pressure change curves in an embodiment of this application;

[0049] Figure 7 This is a schematic diagram of the ratio coefficient variation curve in an embodiment of this application.

[0050] Figure label:

[0051] 110-Wave gypsum board, 120-Conveyor, 130-Pressure detector, 131-Guide cylinder, 132-Pressure sensor, 133-Spring, 134-Piston rod, 135-Ball bearing, 140-Detection point, 150-Laser emitter, 160-Target plate, 170-Distance sensor, 180-Target point.

[0052] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0054] It should be noted that if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0055] Example 1

[0056] Reference Figures 1-7 This embodiment provides an online inspection and conveying control method for gypsum board, including the following steps:

[0057] The corrugated plasterboard 110 is controlled to move on the conveyor 120 in a set posture; wherein, the set posture is that the crest of the corrugated plasterboard 110 faces upward and is located in the center of the conveyor 120, and the length direction of the cavity formed by the bottom surface of the corrugated plasterboard 110 and the top surface of the conveyor 120 is parallel to the conveying direction.

[0058] The pressure change data of the corrugated gypsum board 110 when it passes the detection position is obtained; wherein, the detection position is provided with multiple pressure detectors 130 arranged in a row for collecting pressure data, the multiple pressure detectors 130 are arranged in a direction perpendicular to the conveying direction, and the pressure detectors 130 are used to contact different detection points 140 on the bottom surface of the corrugated gypsum board 110.

[0059] Based on the pressure change data, determine whether the corrugated gypsum board 110 is deformed;

[0060] If yes, then control the corrugated gypsum board 110 to be transported to the defective product area; if no, then obtain the thickness uniformity of the corrugated gypsum board 110 at each detection point 140 and determine whether the thickness uniformity meets the standard.

[0061] If yes, control the corrugated plasterboard 110 to be conveyed to the finished product area; otherwise, control the corrugated plasterboard 110 to be conveyed to the defective product area.

[0062] In existing technologies, most defect detection is performed using machine vision recognition technology. However, this detection method relies too heavily on the accurate extraction of defect features and requires a certain amount of recognition and computation time to meet the detection accuracy requirements, making it difficult to meet the needs of efficient detection.

[0063] Therefore, in this embodiment, during the movement of the corrugated gypsum board 110 on the conveyor 120 in a set posture, the crests of the corrugated gypsum board 110 always face upwards, thus forming a cavity between its bottom surface and the top surface of the conveyor 120. This cavity facilitates continuous contact between the bottom surface of the corrugated gypsum board 110 and multiple pressure detectors 130 when the corrugated gypsum board 110 passes the detection position. The contact process compresses the pressure detectors 130, thereby collecting pressure data. Online detection is completed when the bottom surface of the corrugated gypsum board slides out of the pressure detectors 130. During this process, pressure change data at different positions on the bottom surface of the corrugated gypsum board 110 can be collected in real time by multiple pressure detectors 130. Sampling and detection can be performed at multiple different positions on the bottom surface of the corrugated gypsum board 110. If there is overall or local deformation, the presence of corresponding abnormal data can be analyzed by examining the pressure change data, thereby indirectly determining the condition of the corrugated gypsum board 110. The presence of deformation is detected online, and the detection is efficient and fast. If deformation is found, the corrugated gypsum board 110 is controlled to be transported to the defective product area. If not, further detection is performed. At this time, the thickness uniformity of the corrugated gypsum board 110 at each detection point 140 is obtained to determine whether the thickness uniformity meets the standard. If yes, the corrugated gypsum board 110 is controlled to be transported to the finished product area. If no, the corrugated gypsum board 110 is controlled to be transported to the defective product area. In this way, the online detection of deformation and thickness uniformity of the corrugated gypsum board 110 is completed in sequence. Compared with machine vision recognition technology, the detection efficiency is higher. The reason for prioritizing the detection of deformation defects before thickness uniformity is that deformation defects can be detected more intuitively and efficiently than thickness uniformity. After detecting deformation defects, there is no need to perform thickness uniformity detection again, saving detection time. Therefore, by rationally planning the order of detection indicators, the detection efficiency can be further improved.

[0064] It should be noted that a roller conveyor can be used here. The pressure detector 130 is set in the gap between the drive rollers. The frame of the conveyor is equipped with a bracket to support the pressure detector 130. According to the curvature of the bottom surface of the corrugated gypsum board 110, the height of the pressure detector 130 at different positions is also different. The height of the pressure detector 130 should be slightly higher than the height of the corresponding detection point 140 on the bottom surface of the corrugated gypsum board 110. When there is no deformation on the bottom surface of the corrugated gypsum board 110, the collected pressure data can be maintained within the theoretical pressure range. When there is deformation (including pit and bulge deformation), if it is pit deformation, the measured pressure data is significantly lower than the theoretical pressure, and if it is bulge deformation, the measured pressure data is significantly higher than the theoretical pressure. Based on this principle, the deformation defects of the corrugated gypsum board 110 can be effectively detected.

[0065] As an optional implementation, determining whether the corrugated gypsum board 110 is deformed based on pressure change data includes:

[0066] Based on the pressure change data at different detection points 140, the corresponding pressure change curves were plotted.

[0067] Determine whether the pressure change curve is entirely within the preset pressure threshold range;

[0068] If so, then it is determined that the corrugated plasterboard 110 is not deformed;

[0069] If not, then the corrugated gypsum board 110 is determined to be deformed.

[0070] In this embodiment, since one pressure detector 130 corresponds to one detection point 140, when the corrugated gypsum board 110 moves, its bottom surface continuously passes through the pressure detector 130, thus continuously collecting pressure change data. Based on the pressure change data collected by each pressure detector 130, a corresponding pressure change curve is plotted. Considering the inherent error of the pressure detector 130 and the allowable deformation error of the corrugated gypsum board 110, a pressure threshold range can be set. This pressure threshold range consists of the maximum pressure boundary line and the minimum pressure boundary line. If all the measured pressure change curves are entirely within the pressure threshold range, it can be characterized that there is no deformation. If at least one pressure change curve is entirely or partially outside the boundary line of the pressure threshold range, it can be determined that there is a deformation defect, thereby achieving efficient and accurate detection of deformation defects.

[0071] As an optional implementation, the pressure detector 130 includes a guide cylinder 131 mounted on a support of the conveyor 120. A pressure sensor 132 is mounted at the bottom of the guide cylinder 131, and a spring 133 is mounted on top of the pressure sensor 132. A piston rod 134 is connected to the top of the spring 133. The piston rod 134 extends out of the guide cylinder 131 and is movably connected to a ball bearing 135. The ball bearing 135 is used to contact the bottom surface of the corrugated gypsum board 110.

[0072] In this embodiment, when the corrugated gypsum board 110 passes the pressure detector 130, it first contacts the ball bearing 135 (which can be a bullseye bearing). The ball bearing 135 can roll freely to prevent scratches on the bottom surface of the corrugated gypsum board 110. At this time, the weight of the corrugated gypsum board 110 exerts pressure on the ball bearing 135, causing the piston rod 134 to slide into the guide cylinder 131, which in turn exerts a squeezing force on the spring 133, thereby generating pressure on the pressure sensor 132 and collecting the corresponding pressure data. Here, the spring 133 not only transmits pressure but also allows the piston rod 134 to have a certain range of vertical extension and retraction capabilities to adapt to the detection of corrugated gypsum boards 110 of different specifications, making it highly versatile.

[0073] As an optional implementation, a detection point 140 is set on the central axis of the bottom surface of the corrugated gypsum board 110, and at least two detection points 140 are set on both sides of the central axis of the bottom surface of the corrugated gypsum board 110.

[0074] In this embodiment, the crest of the corrugated plasterboard 110 is the part most prone to deformation and uneven thickness. Therefore, at least one sampling detection point 140 is set on the central axis of the bottom surface of the corrugated plasterboard 110 to detect defects at the crest of the top surface of the corrugated plasterboard 110. At the same time, to improve the detection accuracy, at least two sampling detection points 140 are also set on both sides of the central axis of the bottom surface of the corrugated plasterboard 110 to detect whether there are defects in the arc-shaped parts of the corrugated plasterboard 110 located on both sides of its crest detection.

[0075] It should be noted that the number of detection points 140 should be proportional to the arc length of the corrugated gypsum board 110. The location of the detection points 140 should also take into account the parts of the corrugated gypsum board 110 that are prone to deformation or uneven thickness, so as to improve the detection accuracy. To improve versatility, the pressure detector 130 can be detachably mounted on the support of the conveyor 120, so that the position of the pressure detector 130 on the support can be adjusted according to the detection needs.

[0076] As an optional implementation, the thickness uniformity of the corrugated gypsum board 110 at each detection point 140 is obtained, and it is determined whether the thickness uniformity meets the standard, including:

[0077] The thickness uniformity of the corrugated gypsum board 110 at the detection point 140 on the central axis is obtained to determine whether the thickness uniformity of the top of the corrugated gypsum board 110 meets the standard.

[0078] If not, the corrugated plasterboard 110 is controlled to be transported to the defective product area; if yes, the thickness uniformity of the corrugated plasterboard 110 at the detection points 140 on both sides of the central axis is obtained to determine whether the thickness uniformity of the arc-shaped parts on both sides of the corrugated plasterboard 110 meets the standard.

[0079] In this embodiment, since the crest of the corrugated plasterboard 110 is the most prone to deformation, the thickness uniformity of the top of the corrugated plasterboard 110 can be checked first. If it does not meet the standard, the corrugated plasterboard 110 is directly transported to the defective product area without further inspection. If it meets the standard, the thickness uniformity of the curved parts on both sides of the corrugated plasterboard 110 is then checked. By rationally planning the inspection sequence of different parts of the corrugated plasterboard 110, the inspection efficiency is further improved.

[0080] As an optional implementation, a laser emitter 150 is provided on the inner wall of the conveyor 120 facing the detection position. The laser emitted by the laser emitter 150 is flush with the top of the standard corrugated plasterboard 110. A target plate 160 for forming a laser spot is provided on the other inner wall of the conveyor 120.

[0081] The thickness uniformity of the corrugated gypsum board 110 at the detection point 140 located on the central axis is obtained to determine whether the thickness uniformity of the top of the corrugated gypsum board 110 meets the standard, including:

[0082] The pressure change curve is divided into upstream and / or downstream curves by using a pressure baseline; where the pressure baseline is the horizontal line of the central axis within the pressure threshold range.

[0083] If an upstream curve exists, determine whether a laser spot is continuously monitored within the time corresponding to the upstream curve. If not, determine that the thickness uniformity of the top of the corrugated gypsum board 110 does not meet the standard.

[0084] If a downstream curve exists, determine whether a laser spot is detected within the time corresponding to the downstream curve. If so, determine that the thickness uniformity of the top of the corrugated gypsum board 110 does not meet the standard.

[0085] In this embodiment, since the pressure change curve is generally a floating curve, based on the pressure baseline (i.e., the baseline drawn according to the standard pressure data corresponding to the standard corrugated gypsum board 110), the pressure change curve may be partially or entirely above the pressure baseline, which is the upstream curve; it may also be partially or entirely below the pressure baseline, which is the downstream curve (e.g., ...). Figure 6As shown in the figure, if an upstream curve exists, it indicates that the measured pressure data is higher than the standard pressure data, meaning that the pressure generated by the pressure detector 130 is relatively large. This indicates that the position of the corresponding middle detection point 140 on the bottom surface of the corrugated gypsum board 110 is slightly lower than the standard height. At this time, the position of the corresponding middle detection point 140 on the top surface of the corrugated gypsum board 110 should also be lower than the standard height, meaning that the top of the corrugated gypsum board 110 is slightly lower than the height of the laser emitted by the laser emitter 150, in order to meet the thickness uniformity requirements. Therefore, the continuous monitoring of the laser spot within the time corresponding to the upstream curve is used as the criterion for judging whether the thickness uniformity of the top of the corrugated gypsum board 110 meets the standard. If the laser spot is not monitored continuously or at a certain moment, it indicates that the top of the corrugated gypsum board 110 is higher than the height of the laser emitted by the laser emitter 150 in whole or in part, thus blocking the laser and preventing the formation of the laser spot. This can indirectly indicate that the thickness of the top of the corrugated gypsum board 110 is not uniform in whole or in part. Similarly, the presence of a downstream curve indicates that the measured pressure data is lower than the standard pressure data, signifying that the position of the corresponding middle detection point 140 on the bottom surface of the corrugated gypsum board 110 is slightly higher than the standard height. At this time, the position of the corresponding middle detection point 140 on the top surface of the corrugated gypsum board 110 should also be higher than the standard height. Therefore, the laser emitted by the laser emitter 150 should be continuously blocked, meaning that there should be no laser spot continuously. If a laser spot is continuously detected or detected at a certain moment, it indicates that the top of the corrugated gypsum board 110 is not higher than the standard height in whole or in part, which can be identified as uneven thickness. If both upstream and downstream curves exist, the detection should be performed in segments according to the above standards. This embodiment, by combining the characteristics of the pressure change curve with the display of the laser spot, can characterize the thickness uniformity of the top of the corrugated gypsum board 110 from the side. The detection method is intuitive, efficient, and accurate.

[0086] As an optional implementation, multiple distance sensors 170 at different heights are provided on both inner sidewalls of the conveyor 120 facing the detection position. The distance sensors 170 are used to measure the distance to target points 180 at different positions on the upper surface of the corrugated gypsum board 110. The line connecting the target point 180 and the detection point 140 is a vertical line.

[0087] The thickness uniformity of the corrugated gypsum board 110 at detection points 140 on both sides of the central axis is obtained to determine whether the thickness uniformity of the curved parts on both sides of the corrugated gypsum board 110 meets the standard, including:

[0088] Acquire distance change data when the corrugated gypsum board 110 passes the distance sensor 170;

[0089] The distance change data and pressure change data are combined to plot the ratio coefficient change curve; where the ratio coefficient is the ratio of the pressure data measured at the current time to the distance data.

[0090] Determine whether the ratio coefficient change curve is within the preset coefficient threshold range;

[0091] If yes, then the thickness uniformity of the curved parts on both sides of the wavy gypsum board 110 is deemed to meet the standard; if no, then the thickness uniformity of the curved parts on both sides of the wavy gypsum board 110 is deemed to not meet the standard.

[0092] In this embodiment, when detecting the thickness uniformity of the curved portions on both sides of the corrugated gypsum board 110, multiple distance sensors 170 corresponding to the height positions of the target point 180 are arranged. Here, the target point 180 is on the upper surface of the corrugated gypsum board 110, while the detection point 140 is on the lower surface of the corrugated gypsum board 110, and the line connecting the target point 180 and the detection point 140 is a perpendicular line. This perpendicular line can characterize the thickness characteristics of the corrugated gypsum board 110. Therefore, by collecting pressure change data at the detection point 140 and combining it with the distance change data collected at the target point 180, when the thickness of the curved portions on both sides of the corrugated gypsum board 110 is uneven, the distance change data and / or pressure change data will be abnormal. Therefore, the ratio of the two is used to indirectly characterize the thickness uniformity of the curved portions. Let the pressure value measured at a certain moment be P and the distance value be H, then the ratio coefficient Q = P / H, thereby dynamically calculating the ratio coefficient change data to plot the ratio coefficient change curve (e.g., ...). Figure 7 As shown in the figure, considering the influence of error, a coefficient threshold range is set here. If the ratio coefficient change curve exceeds the boundary line of the coefficient threshold range in whole or in part, a thickness non-uniformity defect is detected. There is no need to detect the actual thickness data, which reduces the detection difficulty, and the detection efficiency is high and the detection results are reliable.

[0093] Example 2

[0094] Based on the same inventive concept as the foregoing embodiments, this embodiment also provides an online inspection and conveying control system for gypsum board, comprising:

[0095] The first control module is used to control the corrugated gypsum board 110 to move on the conveyor 120 in a set posture; wherein, the set posture is that the crest of the corrugated gypsum board 110 faces upward and is located in the center of the conveyor 120, and the length direction of the cavity formed by the bottom surface of the corrugated gypsum board 110 and the top surface of the conveyor 120 is parallel to the conveying direction.

[0096] The pressure detection module is used to acquire pressure change data when the corrugated gypsum board 110 passes through the detection position; wherein, the detection position is provided with multiple pressure detectors 130 arranged in a row for collecting pressure data, the multiple pressure detectors 130 are arranged in a direction perpendicular to the conveying direction, and the pressure detectors 130 are used to contact different detection points 140 on the bottom surface of the corrugated gypsum board 110.

[0097] The deformation detection module is used to determine whether the corrugated gypsum board 110 is deformed based on pressure change data.

[0098] The data processing module is used to control the corrugated gypsum board 110 to be transported to the defective product area if the condition is met, and to obtain the thickness uniformity of the corrugated gypsum board 110 at each detection point 140 if the condition is not met, and to determine whether the thickness uniformity meets the standard.

[0099] The second control module is used to control the corrugated gypsum board 110 to be conveyed to the finished product area if yes, and to control the corrugated gypsum board 110 to be conveyed to the defective product area if no.

[0100] The explanations and examples of the modules in this embodiment can be found in the methods of the foregoing embodiments, and will not be repeated here.

[0101] Example 3

[0102] Based on the same inventive concept as the foregoing embodiments, this embodiment provides a computer device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described method.

[0103] Example 4

[0104] Based on the same inventive concept as the foregoing embodiments, this embodiment provides a computer-readable storage medium storing a computer program, and a processor executes the computer program to implement the above-described method.

[0105] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for online detection, conveying, and control of gypsum board, characterized in that, Includes the following steps: Control the corrugated gypsum board to move on the conveyor in a set posture; wherein, the set posture is that the crest of the corrugated gypsum board faces upward and is located in the center of the conveyor, and the length direction of the cavity formed by the bottom surface of the corrugated gypsum board and the top surface of the conveyor is parallel to the conveying direction. The pressure change data of the corrugated gypsum board as it passes the detection position is obtained. The detection position is equipped with multiple pressure detectors arranged in a row to collect pressure data. The arrangement of the multiple pressure detectors is perpendicular to the conveying direction. The pressure detectors are used to contact different detection points on the bottom surface of the corrugated gypsum board. Based on pressure change data, determine whether the corrugated gypsum board is deformed; If yes, the corrugated gypsum board is conveyed to the defective product area; otherwise, the thickness uniformity of the corrugated gypsum board at each inspection point is measured to determine if the thickness uniformity meets the standard. Specifically, one inspection point is set along the central axis of the bottom surface of the corrugated gypsum board, and at least two inspection points are set on both sides of the central axis. Multiple distance sensors at different heights are installed on both inner walls of the conveyor, directly opposite the inspection positions. These distance sensors measure the distance to target points at different locations on the upper surface of the corrugated gypsum board, and the line connecting the target point and the inspection point is perpendicular. Measuring the thickness uniformity of the corrugated gypsum board at each inspection point and determining if the thickness uniformity meets the standard includes: measuring the thickness uniformity of the corrugated gypsum board at the inspection point located along the central axis to determine if the thickness uniformity of the corrugated gypsum board meets the standard. If the thickness uniformity at the top meets the standard, then the corrugated plasterboard is controlled to be transported to the defective product area. If it does, the thickness uniformity of the corrugated plasterboard at the detection points on both sides of the central axis is obtained to determine whether the thickness uniformity of the curved parts on both sides of the corrugated plasterboard meets the standard. Specifically, this includes: obtaining the distance change data of the corrugated plasterboard as it passes the distance sensor; merging the distance change data and the pressure change data to plot the ratio coefficient change curve; where the ratio coefficient is the ratio of the pressure data measured at the current moment to the distance data; determining whether the ratio coefficient change curve is within the preset coefficient threshold range; if it is, the thickness uniformity of the curved parts on both sides of the corrugated plasterboard is determined to meet the standard; if it is not, the thickness uniformity of the curved parts on both sides of the corrugated plasterboard is determined to be unqualified. If the thickness uniformity meets the standard, the corrugated gypsum board is controlled to be transported to the finished product area; if the thickness uniformity does not meet the standard, the corrugated gypsum board is controlled to be transported to the defective product area.

2. The online inspection and conveying control method for gypsum board as described in claim 1, characterized in that, Based on pressure change data, determine whether the corrugated gypsum board is deformed, including: Based on the pressure change data at different detection points, plot the corresponding pressure change curves; Determine whether the pressure change curve is entirely within the preset pressure threshold range; If so, then it is determined that the corrugated plasterboard is not deformed; If not, then the corrugated plasterboard is determined to be deformed.

3. The online inspection and conveying control method for gypsum board as described in claim 2, characterized in that, The pressure detector includes a guide cylinder mounted on a support of the conveyor. A pressure sensor is located at the bottom of the guide cylinder, and a spring is located at the top of the pressure sensor. A piston rod is connected to the top of the spring. The piston rod extends out of the guide cylinder and is movably connected to a ball bearing. The ball bearing is used to contact the bottom surface of the corrugated gypsum board.

4. The online inspection and conveying control method for gypsum board as described in claim 1, characterized in that, A laser emitter is installed on the inner wall of the conveyor, facing the detection position. The laser emitted by the laser emitter is level with the top of the standard corrugated plasterboard. A target plate for forming the laser spot is installed on the other inner wall of the conveyor. To determine whether the thickness uniformity of the corrugated gypsum board at the test point located on the central axis meets the standard, the following steps are taken: The pressure change curve is divided into an upstream curve and / or a downstream curve by using a pressure baseline; where the pressure baseline is the horizontal line of the central axis within the pressure threshold range, the upstream curve is the curve in the pressure change curve located above the pressure baseline, and the downstream curve is the curve in the pressure change curve located below the pressure baseline. If an upstream curve exists, determine whether a laser spot is continuously monitored within the time corresponding to the upstream curve. If not, determine that the thickness uniformity of the top of the wavy gypsum board does not meet the standard. If a downstream curve exists, determine whether a laser spot is detected within the time corresponding to the downstream curve. If so, determine that the thickness uniformity of the top of the corrugated gypsum board does not meet the standard.

5. An online inspection and conveying control system for gypsum board, characterized in that, include: The first control module is used to control the corrugated gypsum board to move on the conveyor in a set posture; wherein, the set posture is that the crest of the corrugated gypsum board faces upward and is located in the center of the conveyor, and the length direction of the cavity formed by the bottom surface of the corrugated gypsum board and the top surface of the conveyor is parallel to the conveying direction. The pressure detection module is used to acquire pressure change data when the corrugated gypsum board passes through the detection position. The detection position is equipped with multiple pressure detectors arranged in a row to collect pressure data. The arrangement direction of the multiple pressure detectors is perpendicular to the conveying direction. The pressure detectors are used to contact different detection points on the bottom surface of the corrugated gypsum board. The deformation detection module is used to determine whether the corrugated gypsum board is deformed based on pressure change data. The data processing module, if applicable, controls the conveying of the corrugated gypsum board to the defective product area; otherwise, it acquires the thickness uniformity of the corrugated gypsum board at each inspection point and determines whether the thickness uniformity meets the standard. Specifically, one inspection point is set along the central axis of the bottom surface of the corrugated gypsum board, and at least two inspection points are set on both sides of the central axis. Multiple distance sensors at different heights are installed on both inner walls of the conveyor, directly opposite the inspection positions. These distance sensors measure the distance to target points at different locations on the upper surface of the corrugated gypsum board, with the line connecting the target point and the inspection point perpendicular to each other. Acquiring the thickness uniformity of the corrugated gypsum board at each inspection point and determining whether the thickness uniformity meets the standard includes: acquiring the thickness uniformity of the corrugated gypsum board at the inspection point located along the central axis to determine the thickness uniformity of the corrugated gypsum board. If the thickness uniformity of the top of the wavy gypsum board meets the standard, then the wavy gypsum board is controlled to be transported to the defective product area. If it does, the thickness uniformity of the wavy gypsum board at the detection points on both sides of the central axis is obtained to determine whether the thickness uniformity of the curved parts on both sides of the wavy gypsum board meets the standard. Specifically, this includes: obtaining the distance change data of the wavy gypsum board as it passes the distance sensor; merging the distance change data and the pressure change data to plot the ratio coefficient change curve; where the ratio coefficient is the ratio of the pressure data measured at the current moment to the distance data; determining whether the ratio coefficient change curve is within the preset coefficient threshold range; if it is, the thickness uniformity of the curved parts on both sides of the wavy gypsum board is determined to meet the standard; if it is not, the thickness uniformity of the curved parts on both sides of the wavy gypsum board is determined to be unqualified. The second control module is used to control the corrugated gypsum board to be transported to the finished product area if the thickness uniformity meets the standard, and to control the corrugated gypsum board to be transported to the defective product area if the thickness uniformity does not meet the standard.

6. A computer device, characterized in that, The computer device includes a memory and a processor, wherein the memory stores a computer program and the processor executes the computer program to implement the method as described in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and the processor executes the computer program to implement the method as described in any one of claims 1-4.

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