A System and Method for Obtaining Effective Data of Ink Rolling on the Side of a Screen

Abstract

The present invention discloses a system and method for obtaining effective data of ink rolling on the side of a screen. The system includes: a screen, an altimeter, and an industrial control module; the altimeter includes an altimeter roller and a travel measurement unit; the altimeter roller makes relative movement with the screen so that the edge of the altimeter roller is in a tangent state with the edge of the screen; the travel measurement unit is used to maintain within a preset deformation change amount when the edge of the altimeter roller is in a tangent state with the edge of the screen; the industrial control module is used to receive and control the ink rolling according to the preset deformation change amount output by the travel measurement unit. This case realizes the acquisition of effective deformation amount data, so as to control the ink rolling subsequently.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of screen LED technology, and in particular to a system and method for acquiring effective data of screen side ink rolling. Background Art

[0002] At present, the LED screen glue dispensing and ink rolling industries need to use a height measuring roller to contact and squeeze the side of the LED screen to obtain data for subsequent LED screen glue dispensing and ink rolling; Figure 1 is the motion trajectory in the prior art, such as Figure 1 As shown, the current method does not design the trajectory of the altimeter 20, and the positions of the center point of the screen 10 and the altimeter 20 are fixed. In actual production, the edge of the screen 10 is close to the altimeter 20, and the screen 10 rotates around its center point. Since the shape of the screen is not circular but a rounded rectangle, the distance between the center of the screen 10 and the altimeter 20 is different. The screen 10 will squeeze the altimeter 20 during the rotation process, and the deformation caused by the squeezing will be returned to the industrial computer through the altimeter, thereby completing the collection of altimeter data. However, during the rotation process, since the relative distance change between the center of the screen 10 and the altimeter 20 is greater than the stroke of the altimeter, not only can effective data not be collected, but the altimeter may also be damaged. Summary of the invention

[0003] The present invention provides a system and method for acquiring effective data of ink rolling on the side of a screen, so as to achieve acquisition of effective deformation variable data and avoid damage to a height measuring instrument.

[0004] To achieve the above objectives, in a first aspect, an embodiment of the present invention provides a screen side ink rolling effective data acquisition system, the system comprising: a screen, a height meter and an industrial control module; the height meter comprises a height measuring roller and a stroke measuring unit;

[0005] The height measuring roller and the screen undergo relative tangential motion so that the edge of the height measuring roller and the edge of the screen are in a tangential state;

[0006] The stroke measurement unit is used to keep the displacement within a preset deformation variation when the edge of the height measuring roller is in a tangent state with the edge of the screen;

[0007] The industrial control module is used to receive and control the ink rolling according to the preset deformation change output by the stroke measurement unit.

[0008] Optionally, the height measuring roller and the screen undergo relative tangential motion so that the edge of the height measuring roller and the edge of the screen are in a tangential state, including:

[0009] The height measuring roller is used to move along a first track when the screen is not moving so that the height measuring roller is tangent to each edge of the screen; wherein the first track based on the first coordinate system is determined according to a size parameter of the screen, a diameter parameter of the height measuring roller, and a relative position parameter between the center of the height measuring roller and the center of the screen;

[0010] And / or, the screen is used to move along a second trajectory when the height measuring roller is not moving so that the height measuring roller is tangent to each edge of the screen; wherein the second trajectory is determined according to the first trajectory in the first coordinate system.

[0011] Optionally, the second trajectory is determined according to the first trajectory in the first coordinate system, including:

[0012] Converting the coordinate position of the height measuring roller in the first coordinate system into the coordinate position of the height measuring roller in the polar coordinate system;

[0013] A second track under a second coordinate is determined according to the coordinate position of the height measuring roller corresponding to the polar coordinate system.

[0014] Optionally, the second trajectory is determined according to the first trajectory in the first coordinate system, including:

[0015] The coordinate position of the height measuring roller under the first coordinate system is converted into the coordinate position of the height measuring roller under the polar coordinate system, specifically g(a, r):

[0016]

[0017]

[0018] Wherein, (x, y) is the coordinate position of the height measuring roller based on the first coordinate.

[0019] Optionally, the second trajectory is specifically: f(a', r');

[0020] Wherein, a' is the posture angle of the screen in the second coordinate system; the value of a' corresponds to the coordinate position of the height measuring roller in the polar coordinate system. The value of is the same; r' is the absolute distance between the center of the screen and the center of the height measuring roller in the second coordinate system; the value of r' is the same as the value of r in the coordinate position corresponding to the height measuring roller in the polar coordinate system.

[0021] In a second aspect, an embodiment of the present invention further provides a method for acquiring effective data of ink rolling on the side of a screen, which is applied to the system for acquiring effective data of ink rolling on the side of a screen described in the first aspect above, and the method for acquiring effective data of ink rolling on the side of a screen comprises:

[0022] The height measuring roller and the screen undergo relative tangential motion so that the edge of the height measuring roller and the edge of the screen are in a tangential state;

[0023] When the edge of the height measuring roller and the edge of the screen are in a tangent state, the travel measuring unit is maintained within a preset deformation variation;

[0024] The industrial control module receives and controls the ink rolling according to the preset deformation change output by the stroke measurement unit.

[0025] Optionally, the height measuring roller and the screen undergo relative tangential motion so that the edge of the height measuring roller and the edge of the screen are in a tangential state, including:

[0026] When the screen does not move, the height measuring roller moves along a first track so that the height measuring roller is tangent to each edge of the screen; wherein the first track based on the first coordinate system is determined according to a size parameter of the screen, a diameter parameter of the height measuring roller, and a relative position parameter between the center of the height measuring roller and the center of the screen;

[0027] And / or, when the height measuring roller does not move, the screen moves along a second trajectory so that the height measuring roller is tangent to each edge of the screen; wherein the second trajectory is determined according to the first trajectory in the first coordinate system.

[0028] Optionally, the second trajectory is determined according to the first trajectory in the first coordinate system, including:

[0029] Converting the coordinate position of the height measuring roller in the first coordinate system into the coordinate position of the height measuring roller in the polar coordinate system;

[0030] A second track under a second coordinate is determined according to the coordinate position of the height measuring roller corresponding to the polar coordinate system.

[0031] Optionally, the second trajectory is determined according to the first trajectory in the first coordinate system, including:

[0032] The coordinate position of the height measuring roller under the first coordinate system is converted into the coordinate position of the height measuring roller under the polar coordinate system, specifically g(a, r):

[0033]

[0034]

[0035] Wherein, (x, y) is the coordinate position of the height measuring roller based on the first coordinate.

[0036] Optionally, the second trajectory is specifically: f(a', r');

[0037] Among them, a' is the posture angle of the screen in the second coordinate; the magnitude of a' is the same as the magnitude of a in the coordinate position corresponding to the altimeter roller in the polar coordinate system; r' is the absolute distance between the center of the screen and the center of the altimeter roller in the second coordinate; the magnitude of r' is the same as the magnitude of r in the coordinate position corresponding to the altimeter roller in the polar coordinate system.

[0038] In an embodiment of the present invention, the altimeter roller and the screen undergo relative tangential motion so that the edge of the altimeter roller and the edge of the screen are in a tangent state; the stroke measuring unit is used to maintain the edges of the altimeter roller within a preset deformation variation when the edges of the altimeter roller and the edge of the screen are in a tangent state; the industrial control module is used to receive and control the ink rolling according to the preset deformation variation output by the stroke measuring unit, so that the stroke measuring unit can obtain effective deformation amount data, thereby avoiding damage to the stroke measuring unit, and avoiding the screen rotating around its center point in the prior art, which makes it impossible for the stroke measuring unit to obtain effective deformation amount data, thereby avoiding damage to the stroke measuring unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a motion trajectory diagram in the prior art;

[0040] Figure 2 It is a structural schematic diagram of a screen side ink rolling effective data acquisition system provided by an embodiment of the present invention;

[0041] Figure 3-Figure 5 It is a schematic diagram of a screen side ink rolling effective data acquisition system and a height measuring roller in the system that moves along a first trajectory and becomes tangent to each edge of the screen, provided by an embodiment of the present invention;

[0042] Figure 6-Figure 7 It is a schematic diagram of a screen side ink rolling effective data acquisition system provided by an embodiment of the present invention and a height measuring roller in the system moving along a second trajectory and being tangent to each edge of the screen based on a first coordinate;

[0043] Figure 8 is with Figure 3 A schematic diagram of the height measuring roller being tangent to the edges of the screen after moving along the first trajectory under the corresponding polar coordinates;

[0044] Fig. 9 is with Figure 4A schematic diagram of the height measuring roller being tangent to the edges of the screen after moving along the first trajectory under the corresponding polar coordinates;

[0045] Fig.10 It is a flow chart of a method for acquiring effective data of ink rolling on the side of a screen provided by an embodiment of the present invention;

[0046] Fig.11 It is a flow chart of another method for acquiring effective data of screen side ink rolling provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0048] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0049] Figure 2 is a structural schematic diagram of a screen side ink rolling effective data acquisition system provided by an embodiment of the present invention, such as Figure 2 As shown, the system includes: a screen 10, an altimeter 20 and an industrial control module 30; the altimeter 20 includes an altimeter roller 21 and a stroke measurement unit 22; the altimeter roller 21 and the screen 10 undergo relative tangential motion so that the altimeter roller 21 and each edge of the screen 10 are in a tangent state; the stroke measurement unit 22 is used to maintain the altimeter roller 21 within a preset deformation variation when the altimeter roller 21 and each edge of the screen 10 are in a tangent state; the industrial control module 30 is used to receive and control the ink rolling according to the preset deformation variation output by the stroke measurement unit 22.

[0050] The screen 10 may be a structure including at least one rounded rectangle (a rounded rectangle is different from a rounded arc), or a structure of other shapes, which is not limited in this embodiment; the height measuring roller 21 may be a circular structure; the stroke measuring unit 22 may be a spring structure, which may detect the amount of compression deformation between the height measuring roller 21 and the screen 10;

[0051] In this embodiment, the height measuring roller 21 and the screen 10 are in relative tangential motion, so that the height measuring roller 21 and each edge of the screen 10 are in a tangent state; that is, the relative distance between the height measuring roller 21 and each edge of the screen 10 is 0; when the height measuring roller 21 is tangent to each edge of the screen 10, the extrusion deformation of the height measuring roller 21 and the screen 10 detected by the stroke measuring unit 22 is kept within the preset deformation variation; in this way, the stroke measuring unit 22 can obtain effective deformation data, avoiding the screen rotating around its center point in the prior art. During the rotation process, since the relative distance variation between the center of the screen 10 and the height measuring roller 21 is greater than the stroke of the stroke measuring unit 22, not only the stroke measuring unit 22 cannot obtain effective deformation data, but also may cause damage to the stroke measuring unit 22. Among them, the preset deformation variation is the deformation range that can be detected when the stroke measuring unit 22 is not damaged.

[0052] Optionally, on the basis of the above embodiment, various motion forms of the height measuring roller 21 and the screen 10 that undergo relative tangential motion so that the height measuring roller 21 and each edge of the screen 10 are in a tangent state are further refined. Specifically, the height measuring roller 21 and the screen 10 that undergo relative tangential motion so that each edge of the height measuring roller 21 and each edge of the screen 10 are in a tangent state include: the height measuring roller 21 is used to move along a first trajectory so that the height measuring roller 21 and each edge of the screen 10 are tangent when the screen 10 is not moving; wherein the first trajectory based on the first coordinate system is determined according to the size parameters of the screen 10, the diameter parameters of the height measuring roller 21, and the relative position parameters between the center of the height measuring roller 21 and the center of the screen 10;

[0053] Based on the principle of relative motion, and / or, the screen 10 is used to move along the second track when the height measuring roller 21 is not moving so that each edge of the screen 10 is tangent to the height measuring roller 21; wherein the second track is determined according to the first track in the first coordinate system. In this way, by the height measuring roller 21 moving along the first track, and / or the screen 10 moving along the second track, the stroke measuring unit 22 can obtain effective deformation data, thereby avoiding the screen rotating around its center point in the prior art. During the rotation process, since the relative distance change between the center of the screen 10 and the height measuring roller 21 is greater than the stroke of the stroke measuring unit 22, not only the stroke measuring unit cannot obtain effective deformation data, but also the stroke measuring unit 22 may be damaged.

[0054] The following takes the structure of the screen 10 including four rounded rectangles as an example to illustrate the first track and the second track respectively; Figure 3-Figure 5 1 is a schematic diagram of a screen side ink rolling effective data acquisition system provided by an embodiment of the present invention and a system in which a height measuring roller moves along a first track and is tangent to each edge of the screen based on a first coordinate; continue to refer to Figure 2 , and refer to Figure 3-5 In some embodiments, the height measuring roller 21 is used to move along the first track when the screen 10 is not moving so that the height measuring roller 21 is tangent to each edge of the screen 10;

[0055] Specifically, the first trajectory is g(x, y): wherein (x, y) is the coordinate position of the altimeter roller 21 based on the first coordinate; (x, y) is determined by the size parameters of the screen 10, the diameter parameters of the altimeter roller 21, and the relative position parameters between the center of the altimeter roller 21 and the center of the screen 10.

[0056] More specifically, the specific coordinate position (x, y) of the height measuring roller 21 based on the first coordinate is determined by the size parameters of the screen 10, the diameter parameters of the height measuring roller 21, and the relative position parameters between the center of the height measuring roller 21 and the center of the screen 10. Figure 2-4 As shown, assuming that the center point O of the screen 10 is the origin, the positive direction of the X axis is parallel to the long side of the screen 10 and the positive direction of the Y axis is parallel to the short side of the screen 10 and the vertical direction is upward, a first coordinate system is established, and the tangent point A of the initial position point of the height measuring roller 21 and the screen 10 is 0 , the center point of the height measuring roller 21 is G 0 , the length of the screen 10 is L1, the width is L2, and the diameter of the height measuring roller 21 is R;

[0057] like Figure 2-4 As shown, it is assumed that the starting position of the straight line segment after the rounded rectangle at the lower left corner of the screen 10 is taken as the starting position of the first track; starting from the starting position, along the counterclockwise direction, the straight line track of the height measuring roller 21 along the long side of the screen is (x1, y1); y1 is the vertical distance between the center point O of the screen 10 and the height measuring roller 21 is OB 0 (Vertical distance is OB 0 Determined by L2 / 2 and the diameter parameter R of the height measuring roller 21), that is, the vertical coordinate is marked as y1, y1=OB 0 x1 is the horizontal distance between the center point of the height measuring roller 21 and the center point of the screen 10, G 0 B 0 (Horizontal distance is G 0 B 0 , determined by the relative position parameters of the height measuring roller 21 and the screen 10), that is, the horizontal coordinate is marked as x1; that is, x1 = G 0 B0 ,Specifically, refer to Figure 2 , when the height measuring roller 21 is at the starting position, the coordinate position (x1, y1) of the height measuring roller 21 is (- L1 / 2, -L2 / 2+R); refer to Figure 3 , when the height measuring roller 21 is in the middle position, the coordinate position (x1, y1) of the height measuring roller 21 is (0, -L2 / 2+R); if the height measuring roller 21 is between the starting position and the middle position, the coordinate position (x1, y1) of the height measuring roller 21 is (-L1 / 2+ n*Δ, -L2 / 2-R); n*Δ is the spacing of each movement on the straight line segment; refer to Figure 4 , the coordinate position (x1, y1) of the height measuring roller 21 is (L1 / 2-n*Δ, -L2 / 2+R);

[0058] like Figure 5 As shown, when starting from the starting position and rotating counterclockwise to the rounded rectangle of the screen 10, the trajectory of the rounded rectangle of the screen is (x2, y2); Figure 4 As shown, at the rounded rectangle, the curve segment is not an arc but a spline curve. Therefore, take a point N on the spline curve. 0 , and two points N1 and N2 near this point (not shown in the figure); the coordinates of the center of the circle at the rounded rectangle are determined by these three points (x M y M ) and radius r M ; Take EN 0 Perpendicular to MF; FG 0 Perpendicular to MF; thus, the coordinate position G of the center of the height measuring roller can be calculated according to the similar triangle method. 0 (x2, y2);

[0059] According to the similar triangle method, the coordinate position G of the center of the height measuring roller can be calculated. 0 (x2, y2) is specifically:

[0060] (1)

[0061] (2)

[0062] (3)

[0063] (4)

[0064] (5)

[0065] Among them, x M ,y M are the horizontal and vertical coordinates of the center coordinate M respectively; N0and N0 N 0 Thus, the coordinate position G0 (x2, y2) of the center of the height measuring roller 21 can be calculated by the above formulas (1)-(5); that is, the coordinate position (x2, y2) of the height measuring roller 21 at the rounded rectangle.

[0066] Of course, it is understandable that in other embodiments, when the screen 10 may also include other rounded rectangular structures, the first track may also be g(x, y).

[0067] In other embodiments, based on the principle of relative motion, Figure 6-7 It is a schematic diagram of a screen side ink rolling effective data acquisition system and a screen in the system that moves along a second track and becomes tangent to a height measuring roller, provided by an embodiment of the present invention; Figure 6 Corresponding to Figure 3 The relative positions of the height measuring roller 21 and the screen 10 are the same; Figure 7 Corresponding to Figure 4 The relative positions of the height measuring roller 21 and the screen 10 are the same; Figure 8 is with Figure 3 A schematic diagram of the height measuring roller being tangent to the edges of the screen after moving along the first trajectory under the corresponding polar coordinates; Fig. 9 is with Figure 4 Schematic diagram of the height measuring roller being tangent to the edges of the screen after moving along the first track under the corresponding polar coordinates; Figure 6 , 7 , the screen 10 is used to move along the second track when the height measuring roller 21 does not move so that the height measuring roller 21 is tangent to each edge of the screen 10; wherein the second track is determined according to the first track in the first coordinate system;

[0068] Specifically, the second trajectory is determined according to the first trajectory in the first coordinate system, including: converting the coordinate position (x, y) of the altimeter roller in the first coordinate system into the coordinate position of the corresponding altimeter roller in the polar coordinate system; and determining the second trajectory in the second coordinate system according to the coordinate position of the corresponding altimeter roller 21 in the polar coordinate system.

[0069] The coordinate position (x, y) of the height measuring roller in the first coordinate system is converted into the coordinate position (a, r) ​​of the height measuring roller in the polar coordinate system. Specifically:

[0070]

[0071]

[0072] Wherein, (x, y) is the coordinate position of the height measuring roller 21 based on the first coordinate;

[0073] The second trajectory is specifically: f(a', r');

[0074] Among them, a' is the posture angle of the screen in the second coordinate system; the value of r' is the same as the value of a in the coordinate position of the corresponding altimeter roller in the polar coordinate system; r' is the absolute distance between the center of the screen and the center of the altimeter roller in the second coordinate system; the value of r' is the same as the value of r in the coordinate position of the corresponding altimeter roller in the polar coordinate system.

[0075] Here Figure 3 and Figure 4 For example, refer to Figure 8 ,Will Figure 3 The coordinate position (x, y) of the height measuring roller under the first coordinate in the polar coordinate system can be converted into the coordinate position (a1, r1) of the height measuring roller 21; Fig. 9 ,Will Figure 4 The coordinate position (x, y) of the height measuring roller under the first coordinate in the polar coordinate system can be converted into the coordinate position (a2, r2) of the height measuring roller 21; at the same time, refer to Figure 8 and Figure 6 It can be known that at this time, the value of the screen posture angle (the screen posture angle is the angle between the screen center line E and the absolute distance r) under the second coordinate (the second coordinate is centered on the altimeter roller 21, with the X axis to the right along the horizontal diameter and the Y axis upward along the vertical diameter) is the same as the value of the coordinate position a1 of the corresponding altimeter roller 21 in the polar coordinate system; the value of the absolute distance between the center of the screen 10 and the center of the altimeter roller 21 under the second coordinate is the same as the value of r in the coordinate position of the corresponding altimeter roller 21 in the polar coordinate system;

[0076] Also refer to Fig. 9 and Figure 7 It can be seen that at this time, the magnitude of the posture angle of the screen in the second coordinate is the same as the magnitude of the coordinate position a2 of the corresponding height measuring roller 21 in the polar coordinate system; the magnitude of the absolute distance between the center of the screen 10 and the center of the height measuring roller 21 in the second coordinate is the same as the magnitude of r in the coordinate position of the corresponding height measuring roller 21 in the polar coordinate system. Of course, it can be understood that other positions in the second track can be determined according to the corresponding positions on the first track, and they will not be explained one by one here.

[0077] Based on the same inventive concept, an embodiment of the present invention further provides a method for acquiring effective data of ink rolling on the side of a screen, which is applied to the effective data acquisition system of ink rolling on the side of a screen in the above embodiment. Fig.10 The present invention also provides a flowchart of a method for obtaining effective data of screen side ink rolling; Fig.10 As shown, the method includes:

[0078] S110. The height measuring roller and the screen perform a relative tangential movement so that the edge of the height measuring roller is in a tangential state with the edge of the screen;

[0079] S120. When the edge of the height measuring roller is in a tangential state with the edge of the screen, the stroke measuring unit remains within a preset deformation change amount;

[0080] S130. The industrial control module receives and controls the ink rolling according to the preset deformation change amount output by the stroke measuring unit.

[0081] In this embodiment, through the relative movement between the height measuring roller 21 and the screen 10, the edges of the height measuring roller 21 and the screen 10 are in a tangential state; in this way, the relative distance between the edges of the height measuring roller 21 and the screen 10 is 0; when the edges of the height measuring roller 21 and the screen 10 are tangent, the extrusion deformation amount of the height measuring roller 21 detected by the stroke measuring unit 22 remains within the preset deformation change amount; in this way, the stroke measuring unit 22 can obtain effective deformation amount data.

[0082] Optionally, on the basis of the above embodiment, step S110 is further refined. Fig.11 This is a schematic flow chart of another method for obtaining effective data of ink rolling on the side of the screen provided by the embodiment of the present invention; as Fig.11 shown, the method includes:

[0083] S210. When the screen is not moving, the height measuring roller moves along a first trajectory so that the height measuring roller is tangent to the edges of the screen; wherein, the first trajectory in the first coordinate system is determined according to the size parameters of the screen, the diameter parameters of the height measuring roller, and the relative position parameters between the center of the height measuring roller and the center of the screen; and / or, when the height measuring roller is not moving, the screen moves along a second trajectory so that the height measuring roller is tangent to the edges of the screen; wherein, the second trajectory is determined according to the first trajectory in the first coordinate system.

[0084] Among them, the specific determination process of the first trajectory can refer to the determination process of the coordinate position of the height measuring roller 21 based on the first coordinate in the system embodiment; the determination process of (x, y) by the size parameters of the screen 10, the diameter parameters of the height measuring roller 21, and the relative position parameters between the center of the height measuring roller 21 and the center of the screen will not be elaborated here.

[0085] The second trajectory is determined according to the first trajectory in the first coordinate system, including: converting the coordinate position of the height measuring roller in the first coordinate into the coordinate position of the corresponding height measuring roller in the polar coordinate system; determining the second trajectory in the second coordinate according to the coordinate position of the corresponding height measuring roller in the polar coordinate system.

[0086] Specifically, the second trajectory is determined according to the first trajectory in the first coordinate system, including: converting the coordinate position of the height measuring roller in the first coordinate system into the coordinate position of the height measuring roller in the polar coordinate system, specifically g(a, r):

[0087]

[0088]

[0089] Wherein, (x, y) is the coordinate position of the height measuring roller based on the first coordinate;

[0090] Optionally, the second trajectory is specifically: f(a', r');

[0091] Among them, a' is the posture angle of the screen in the second coordinate system; the value of a' is the same as the value of a in the coordinate position of the corresponding altimeter roller in the polar coordinate system; r' is the absolute distance between the center of the screen and the center of the altimeter roller in the second coordinate system; the value of r' is the same as the value of r in the coordinate position of the corresponding altimeter roller in the polar coordinate system.

[0092] S220, when the edge of the height measuring roller and the edge of the screen are in a tangent state, the stroke measuring unit is kept within a preset deformation variation;

[0093] S230, the industrial control module receives and controls the ink rolling according to the preset deformation change output by the stroke measurement unit.

[0094] In this embodiment, the stroke measurement unit 22 can obtain valid deformation amount data by moving the height measuring roller 21 along the first track and / or the screen 10 along the second track, thereby avoiding the rotation of the screen around its center point in the prior art. During the rotation, since the relative distance change between the center of the screen 10 and the height measuring roller 21 is greater than the stroke of the stroke measurement unit 22, not only the stroke measurement unit cannot obtain valid deformation amount data, but also the stroke measurement unit 22 may be damaged.

[0095] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A screen side ink rolling effective data acquisition system, characterized in that: include: Screen, altimeter and industrial control module; the altimeter includes an altimeter roller and a stroke measurement unit; The height measuring roller and the screen undergo relative tangential motion so that the edge of the height measuring roller and the edge of the screen are in a tangential state; The stroke measurement unit is used to keep the displacement within a preset deformation variation when the edge of the height measuring roller is in a tangent state with the edge of the screen; The industrial control module is used to receive and control the ink rolling according to the preset deformation change output by the stroke measurement unit; The height measuring roller and the screen undergo relative tangential motion so that the edge of the height measuring roller and the edge of the screen are in a tangent state, including: The height measuring roller is used to move along a first track when the screen is not moving so that the height measuring roller is tangent to each edge of the screen; wherein the first track based on the first coordinate system is determined according to a size parameter of the screen, a diameter parameter of the height measuring roller, and a relative position parameter between the center of the height measuring roller and the center of the screen; The screen is used to move along a second track when the height measuring roller is not moving so that the height measuring roller is tangent to each edge of the screen; wherein the second track is determined according to the first track in the first coordinate system.

2. The screen side ink rolling effective data acquisition system according to claim 1, characterized in that: The second trajectory is determined according to the first trajectory in the first coordinate system, including: Converting the coordinate position of the height measuring roller in the first coordinate system into the coordinate position of the height measuring roller in the polar coordinate system; A second track under a second coordinate is determined according to the coordinate position of the height measuring roller corresponding to the polar coordinate system.

3. The screen side ink rolling effective data acquisition system according to claim 2, characterized in that: The second trajectory is determined according to the first trajectory in the first coordinate system, including: The coordinate position of the height measuring roller under the first coordinate system is converted into the coordinate position of the height measuring roller under the polar coordinate system, specifically g(a, r): ； ； Wherein, (x, y) is the coordinate position of the height measuring roller based on the first coordinate.

4. The screen side ink rolling effective data acquisition system according to claim 3, characterized in that: The second trajectory is specifically: f(a', r'); Among them, a' is the posture angle of the screen in the second coordinate; the magnitude of a' is the same as the magnitude of a in the coordinate position corresponding to the altimeter roller in the polar coordinate system; r' is the absolute distance between the center of the screen and the center of the altimeter roller in the second coordinate; the magnitude of r' is the same as the magnitude of r in the coordinate position corresponding to the altimeter roller in the polar coordinate system.

5. A method for obtaining effective data of screen side ink rolling, characterized in that: The screen side ink rolling effective data acquisition system applied to any one of claims 1 to 4 above, the screen side ink rolling effective data acquisition method comprises: The height measuring roller and the screen undergo relative tangential motion so that the edge of the height measuring roller and the edge of the screen are in a tangential state; When the edge of the height measuring roller and the edge of the screen are in a tangent state, the travel measuring unit is maintained within a preset deformation variation; The industrial control module receives and controls the ink rolling according to the preset deformation variation output by the stroke measurement unit; The height measuring roller and the screen undergo relative tangential motion so that the edge of the height measuring roller and the edge of the screen are in a tangent state, including: When the screen does not move, the height measuring roller moves along a first track so that the height measuring roller is tangent to each edge of the screen; wherein the first track based on the first coordinate system is determined according to a size parameter of the screen, a diameter parameter of the height measuring roller, and a relative position parameter between the center of the height measuring roller and the center of the screen; When the height measuring roller does not move, the screen moves along a second track so that the height measuring roller is tangent to each edge of the screen; wherein the second track is determined according to the first track in the first coordinate system.

6. The method for acquiring effective data of screen side ink rolling according to claim 5, characterized in that: The second trajectory is determined according to the first trajectory in the first coordinate system, including: Converting the coordinate position of the height measuring roller in the first coordinate system into the coordinate position of the height measuring roller in the polar coordinate system; A second track under a second coordinate is determined according to the coordinate position of the height measuring roller corresponding to the polar coordinate system.

7. The method for acquiring effective data of screen side ink rolling according to claim 6, characterized in that: The second trajectory is determined according to the first trajectory in the first coordinate system, including: The coordinate position of the height measuring roller under the first coordinate system is converted into the coordinate position of the height measuring roller under the polar coordinate system, specifically g(a, r): ； ； Wherein, (x, y) is the coordinate position of the height measuring roller based on the first coordinate.

8. The method for acquiring effective data of screen side ink rolling according to claim 7, characterized in that: The second trajectory is specifically: f(a', r'); Among them, a' is the posture angle of the screen in the second coordinate; the magnitude of a' is the same as the magnitude of a in the coordinate position corresponding to the altimeter roller in the polar coordinate system; r' is the absolute distance between the center of the screen and the center of the altimeter roller in the second coordinate; the magnitude of r' is the same as the magnitude of r in the coordinate position corresponding to the altimeter roller in the polar coordinate system.

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