Flatness detection method, device, framework, display device and smart blackboard

Abstract

This invention relates to a flatness detection method, apparatus, frame, display device, and smart blackboard. By placing corresponding infrared emitters and receivers on opposite sides of the surface to be tested, the flatness of the surface is determined based on the deviation of the infrared signal received by the receiver from a reference infrared signal. If the surface is uneven, the positional relationship between the surface and the mounting plane of the object is determined based on the incident angle of the infrared signal. First flatness adjustment information is generated to prompt the user to adjust the flatness of the surface, and this information is displayed on the display device. This allows the user to adjust the flatness of the object's surface in a timely manner based on the first flatness adjustment information, improving the installation efficiency of the object.

Description

Technical Field

[0001] This invention relates to the field of surface mounting, and in particular to a method, apparatus, frame, display device, and smart blackboard for flatness testing. Background Technology

[0002] A video wall is a large screen formed by splicing multiple displays together. During installation, the individual displays are typically installed as modules. However, unevenness, such as misalignment, can easily occur at the corners and edges of the assembled video wall. Current technology usually requires installers to use external tools like levels to check the flatness of the video wall after installation and make adjustments to any uneven sections, resulting in low installation efficiency. Summary of the Invention

[0003] This application provides a flatness detection method, apparatus, frame, display device, and smart blackboard, which can improve the installation efficiency of video wall displays. The technical modules are as follows:

[0004] In a first aspect, embodiments of this application provide a flatness detection method, which is applied to the flatness detection of the surface of an object after installation. At least one infrared emitter is provided on the first side of the surface to be tested, and at least one infrared receiver is provided on the second side of the surface to be tested, which is opposite to the infrared emitter. The method includes the following steps: Control at least one infrared transmitter to emit infrared signals, and use the at least one infrared receiver to receive the infrared signals; Obtain the signal strength deviation value of the infrared signal relative to the intensity of the reference infrared signal; If the signal strength deviation exceeds the signal strength deviation threshold, it is determined that the surface to be tested is uneven. The incident angle value of the infrared signal is obtained, and the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value. First flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane. The first flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested. The first flatness adjustment information is displayed on the display device.

[0005] Secondly, this application provides a flatness detection method for detecting the flatness of the surface of an object after installation. At least one first infrared emitter is provided on the first side of the surface to be tested, at least one second infrared emitter is provided on the second side of the surface to be tested, at least one first infrared receiver is provided on the third side of the surface to be tested corresponding to the first infrared emitter, and at least one second infrared receiver is provided on the fourth side of the surface to be tested corresponding to the second infrared emitter. The method includes the following steps: Control at least one first infrared transmitter to emit a first infrared signal, and control at least one first infrared receiver to receive the first infrared signal; The at least one second infrared transmitter emits a second infrared signal, and the at least one second infrared receiver receives the second infrared signal. Obtain a first signal strength deviation value of the first infrared signal relative to a first initial signal strength, and obtain a second signal strength deviation value of the second infrared signal relative to a second initial signal strength; If the first signal strength deviation exceeds a first signal strength deviation threshold, and / or if the second signal strength deviation exceeds a second signal strength deviation threshold, it is determined that the surface to be tested is uneven. The incident angle values ​​of the first infrared signal and the second infrared signal are obtained. The positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle values. Second flatness adjustment information of the surface to be tested is obtained. The second flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested. The second flatness adjustment information is displayed on the display device.

[0006] Thirdly, this application provides a flatness detection device for detecting the flatness of the surface of an object after installation. At least one infrared emitter is provided on the first side of the surface to be tested, and at least one infrared receiver is provided on the second side of the surface to be tested, opposite to the infrared emitter. The device includes: A first infrared signal receiving module is used to control at least one infrared transmitter to emit infrared signals and to receive the infrared signals using the at least one infrared receiver. The first deviation value acquisition module is used to acquire the signal strength deviation value of the infrared signal relative to the intensity of the reference infrared signal. The first adjustment information acquisition module is used to determine that the surface to be tested is uneven if the signal strength deviation value exceeds the signal strength deviation threshold, acquire the incident angle value of the infrared signal, determine the positional relationship between the surface to be tested and the object mounting plane based on the incident angle value, and generate first flatness adjustment information based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested; The first display module is used to display the first flatness adjustment information on a display device.

[0007] Fourthly, this application provides a flatness detection device for detecting the flatness of the surface of an object after installation. At least one first infrared emitter is provided on the first side of the surface to be measured, at least one second infrared emitter is provided on the second side of the surface to be measured, at least one first infrared receiver corresponding to the first infrared emitter is provided on the third side of the surface to be measured, and at least one second infrared receiver corresponding to the second infrared emitter is provided on the fourth side of the surface to be measured. The device includes: The second infrared signal receiving module is used to control at least one first infrared transmitter to transmit a first infrared signal and to control the at least one first infrared receiver to receive the first infrared signal. The third infrared signal receiving module is used to transmit a second infrared signal using the at least one second infrared transmitter and to receive the second infrared signal using the at least one second infrared receiver. The second deviation value acquisition module is used to acquire a first signal strength deviation value of the first infrared signal relative to the first initial signal strength, and to acquire a second signal strength deviation value of the second infrared signal relative to the second initial signal strength. The second adjustment information acquisition module is used to determine that the surface to be tested is uneven if the first signal strength deviation value exceeds the first signal strength deviation threshold, and / or if the second signal strength deviation value exceeds the second signal strength deviation threshold; acquire the incident angle values ​​of the first infrared signal and the second infrared signal; determine the positional relationship between the surface to be tested and the object mounting plane based on the incident angle values; and acquire the second flatness adjustment information of the surface to be tested; wherein the second flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested. The second display module is used to display the second flatness adjustment information on a display device.

[0008] Fifthly, embodiments of this application provide a frame, a first side of which is provided with at least one infrared emitter, a second side of which is provided with at least one infrared receiver opposite to the infrared emitter, and a flatness detection device as described in claim 8 is provided on the frame.

[0009] In a sixth aspect, embodiments of this application provide a frame, wherein a first side of the frame is provided with at least one first infrared emitter, a second side of the frame is provided with at least one second infrared emitter, a third side of the frame is provided with at least one first infrared receiver corresponding to the first infrared emitter, a fourth side of the frame is provided with at least one second infrared receiver corresponding to the second infrared emitter, and the frame is provided with a flatness detection device as described in claim 9.

[0010] In a seventh aspect, embodiments of this application provide a display device, characterized in that it includes at least two display screens and the aforementioned frame, wherein the at least two display screens are mounted on the frame.

[0011] Eighthly, this application provides a smart blackboard, characterized in that it includes at least two smart blackboards and the aforementioned frame, wherein the at least two smart blackboards are mounted on the frame.

[0012] In this embodiment, by setting corresponding infrared emitters and infrared receivers on opposite sides of the surface to be tested, the flatness of the surface to be tested is determined based on the deviation of the infrared signal received by the infrared receiver from the reference infrared signal. When the surface to be tested is uneven, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle of the infrared signal. First flatness adjustment information is generated to prompt the user to adjust the flatness of the surface to be tested, and the first flatness adjustment information is displayed on the display device. Thus, the user can adjust the flatness of the object surface to be tested in a timely manner according to the first flatness adjustment information, thereby improving the installation efficiency of the object to be tested.

[0013] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram illustrating an application scenario of a flatness detection method according to an embodiment of the present invention; Figure 2 This is a flowchart of a flatness detection method according to the first embodiment of the present invention; Figure 3 This is a schematic diagram showing the positional relationship between the plane to be measured and the mounting plane according to the first embodiment of the present invention; Figure 4 This is a schematic diagram of the surface to be tested according to the first embodiment of the present invention; Figure 5 This is a schematic diagram of the display interface of the display device according to the first embodiment of the present invention; Figure 6 This is a flowchart of a flatness detection method according to a second embodiment of the present invention. Figure 7 This is a schematic diagram of the display interface of the display device according to the second embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a flatness detection device according to the third embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of a flatness detection device according to the fourth embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of a frame according to the fifth embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of a frame according to the sixth embodiment of the present invention. Detailed Implementation

[0015] To make the objectives, technical modules and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0016] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0017] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0018] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of methods and approaches consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0019] Furthermore, in the description of this application, unless otherwise stated, "several" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0020] The flatness detection method of this application embodiment can be used to automatically detect whether the surface to be tested is flat and, when the surface to be tested is detected to be uneven, generate adjustment prompt information for the surface to be tested and display it on the display device, so that the user can adjust the surface to be tested in a timely manner according to the adjustment prompt information of the surface to be tested displayed on the display device, and ensure the flatness of the surface to be tested.

[0021] Please see Figure 1 This is a schematic diagram illustrating the application scenario of the flatness detection method of this application, such as... Figure 1 As shown, the object to be tested 300 can be formed by splicing together at least two objects 301 and 302, and the surface to be tested can be a plane formed by splicing together at least two objects. For example, the object to be tested can be a splicing screen formed by splicing together at least two displays, a cover plate formed by splicing together at least two glass cover plates, or a smart blackboard formed by splicing together at least two smart blackboards, etc., which have certain requirements for the flatness of the surface.

[0022] The object to be tested 300 can be installed on the mounting surface 200, which can be a wall or the ground, etc. At least one infrared transmitter 101 is provided on the first side of the surface to be tested, and at least one infrared receiver 102 opposite to the infrared transmitter 101 is provided on the second side of the surface to be tested.

[0023] like Figure 1 As shown, in the first embodiment of this application, an infrared emitter 101 is provided on the first side of the surface to be tested, and an infrared receiver 102 is provided on the second side. Each infrared emitter 101 and a corresponding infrared receiver 102 are arranged opposite to each other. The infrared light emitted by the infrared emitter 101 can be received by the infrared receiver 102 arranged opposite to it. When the surface of an object 301 or object 302 is abnormally installed, such as convex or concave, the infrared light emitted by the infrared emitter 101 is blocked, and the signal strength of the infrared signal received by the infrared receiver 102 becomes very weak and cannot be effectively identified.

[0024] In this embodiment, the flatness of the surface under test is detected based on the infrared signal received by the infrared receiver. Please refer to [link to relevant documentation]. Figure 2 This application provides a method for flatness detection, including the following steps: S101: Control at least one infrared transmitter to emit an infrared signal, and use the at least one infrared receiver to receive the infrared signal; S102: Obtain the signal strength deviation value of the infrared signal relative to the intensity of the reference infrared signal; The reference infrared signal can be the infrared signal with the highest signal strength that the infrared receiver can receive. The reference infrared signal can be the infrared signal received by the infrared receiver when the plane under test is flat.

[0025] In this embodiment of the application, the reference infrared signal may refer to the infrared signal received by the infrared receiver located at the midpoint of the second side.

[0026] The signal strength deviation of the infrared signal relative to the reference infrared signal is obtained by comparing the signal strength value of the infrared signal received by the infrared receiver with the signal strength value of the reference infrared signal.

[0027] S103: If the signal strength deviation value exceeds the signal strength deviation threshold, it is determined that the surface to be tested is uneven, the incident angle value of the infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined according to the incident angle value, and first flatness adjustment information is generated according to the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested; The signal strength deviation value is used to determine the difference in signal strength between the infrared signal and the reference infrared signal. The larger the signal strength deviation value, the greater the change in the signal strength of the infrared signal, which means that the infrared light emitted by the infrared transmitter is more likely to be obstructed during transmission. Therefore, in this embodiment of the application, when the signal strength deviation value exceeds the signal strength deviation threshold, it is determined that the infrared light emitted by the infrared transmitter is obstructed during transmission, that is, the surface to be tested is uneven.

[0028] The incident angle of the infrared signal can be obtained from the infrared signal received by the infrared receiver.

[0029] The spatial relationship between the infrared transmitter and receiver and the mounting plane can be determined by the incident angle of the infrared signal, thereby determining the positional relationship between the surface to be measured and the mounting plane of the object.

[0030] In this embodiment of the application, the positional relationship between the surface to be measured and the object mounting plane can specifically refer to the positional relationship between the side where the infrared emitter is located and the object mounting plane. Specifically, the positional relationship between the surface to be measured and the object mounting plane can include convex or concave.

[0031] Specifically, please refer to Figure 3 The following is a schematic diagram illustrating the positional relationship between the plane to be measured and the mounting plane based on the incident angle value in one embodiment; like Figure 3 As shown, when the surface to be measured is flat, the infrared light emitted by the infrared emitter 101 is incident on the infrared receiver 102 along a direction parallel to the mounting plane. At this time, the incident angle value α = 0°. When the incident angle value is not 0, the positional relationship between the infrared emitter 101 and the infrared receiver 102 is determined according to the incident angle value.

[0032] Specifically, in this embodiment, the positional relationship between the infrared transmitter 101 and the infrared receiver 102 is described by the angle formed between the infrared light emitted by the infrared transmitter 101 and the mounting plane.

[0033] like Figure 3 As shown, when the angle a1 formed by the infrared light emitted by the infrared emitter 101 and the mounting plane is greater than 0, it is determined that the side where the infrared emitter 101 is located is concave, and first flatness adjustment information is generated to remind that the side where the infrared emitter 101 is located is concave.

[0034] When the angle α2 formed between the infrared light emitted by the infrared emitter 101 and the mounting plane is less than 0, it is determined that the side where the infrared emitter 101 is located is convex, and first flatness adjustment information is generated to remind the side where the infrared emitter 101 is located to be convex.

[0035] Alternatively, in another embodiment, the step of generating first flatness adjustment information based on the positional relationship between the surface to be measured and the object mounting plane specifically includes: If the incident angle value is greater than a preset threshold, it is determined that the surface to be tested is convex, and an installation prompt signal is generated to prompt the user to press down. If the incident angle value is less than a preset threshold, it is determined that the surface to be tested is concave, and an installation prompt signal is generated to prompt the user to lift it up.

[0036] The incident angle value can refer to the angle formed between the incident ray and the mounting plane.

[0037] In this embodiment of the application, the preset threshold can be 0°.

[0038] The positional relationship between the infrared transmitter 101 and the infrared receiver 102 is determined. Specifically, when the incident angle value is greater than 0, the side where the infrared transmitter 101 is located is determined to be convex, and first flatness adjustment information is generated to remind the infrared transmitter 101 that the side where the infrared transmitter 101 is located is convex; when the incident angle is less than 0, the side where the infrared transmitter 101 is located is determined to be concave, and first flatness adjustment information is generated to remind the infrared transmitter 101 that the side where the infrared transmitter 101 is located is concave.

[0039] When it is determined that the surface to be tested is flat, the prompt information indicating whether the surface to be tested is flat may not be displayed on the display device. Alternatively, in another embodiment, after the step of obtaining the signal intensity deviation value of the at least one infrared signal, the method further includes: If the signal strength deviation is less than the signal strength deviation threshold, the surface to be tested is determined to be flat, and a prompt message is generated. The prompt information is displayed on the display device; wherein the prompt information is used to remind the user that the surface to be tested is installed flat.

[0040] S104: Display the first flatness adjustment information on the display device.

[0041] The first flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested. Specifically, when it is determined that the side where the infrared emitter 101 is located is concave, the first flatness adjustment information is generated to remind the user to raise the side where the infrared emitter 101 is located; when it is determined that the side where the infrared emitter 101 is located is convex, the first flatness adjustment information is generated to remind the user to press down the side where the infrared emitter 101 is located.

[0042] In this embodiment, by setting corresponding infrared emitters and infrared receivers on opposite sides of the surface to be tested, the flatness of the surface to be tested is determined based on the deviation of the infrared signal received by the infrared receiver from the reference infrared signal. When the surface to be tested is uneven, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle of the infrared signal. First flatness adjustment information is generated to prompt the user to adjust the flatness of the surface to be tested, and the first flatness adjustment information is displayed on the display device. Thus, the user can adjust the flatness of the object surface to be tested in a timely manner according to the first flatness adjustment information, thereby improving the installation efficiency of the object to be tested.

[0043] like Figure 4 As shown, in one embodiment, there are N infrared transmitters and infrared receivers, with the N infrared transmitters arranged sequentially along the first edge of the surface to be measured, wherein the... An infrared transmitter is positioned at the midpoint of the first side of the surface to be measured, and N infrared receivers are sequentially arranged along the second side of the surface to be measured. An infrared receiver is positioned at the midpoint of the second side of the surface to be measured; where N is an odd number and N≥3; If the signal strength deviation exceeds the signal strength deviation threshold, and the infrared signal with the signal strength deviation exceeding the signal strength deviation threshold is considered a front-end signal. The infrared signal received by the infrared receiver determines that the upper side of the surface to be tested is uneven. The incident angle value of the infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the upper side of the surface to be tested. If the signal strength deviation exceeds the signal strength deviation threshold, and the infrared signal with the signal strength deviation exceeding the signal strength deviation threshold is not forward-facing. The infrared signal received by the infrared receiver determines that the lower side of the surface under test is uneven. The incident angle value of the infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the lower side of the surface to be tested.

[0044] In this embodiment of the application, by observing the changes in the signal intensity of the infrared signals on the upper and lower sides of the midpoint, it is determined that the upper side is uneven when the signal intensity of the infrared signal on the upper side changes significantly; it is determined that the lower side is uneven when the signal intensity of the infrared signal on the lower side changes significantly; otherwise, it is determined that the upper and / or lower sides are flat.

[0045] When it is determined that a certain side is uneven, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value of the infrared signal on the corresponding side, and the first flatness adjustment information of the corresponding side is generated. This can reduce the amount of data processing. Furthermore, by displaying the first flatness adjustment information of the corresponding side, it is more convenient for users to adjust the flatness of the corresponding area of ​​the surface to be tested, thereby improving the flatness adjustment efficiency of the surface to be tested.

[0046] It should be noted that in the embodiments of this application, "upper side" and "lower side" are determined based on the relative positional relationship between the location of the infrared transmitter where the signal strength deviation value exceeds the signal strength deviation threshold and the midpoint of the first side.

[0047] like Figure 5 As shown, it is a schematic diagram of the display interface of a display device in one embodiment; as Figure 5 As shown, the display interface shows a structural schematic diagram of the surface to be measured.

[0048] When an upward convexity is detected on the upper side of the first side, a first flatness adjustment information 401 is displayed on the upper side of the first side of the surface to be tested on the display interface to prompt the user to press down on the upper side of the first side. The first flatness adjustment information 401 can be "press down".

[0049] When the bottom of the first side is detected to be flat, a prompt message 402 is displayed on the bottom of the first side of the surface to be tested on the display interface to indicate to the user that the bottom of the first side is flat. The prompt message 402 can be "Completed", that is, it indicates that the user does not need to make any adjustment.

[0050] The flatness detection method of this application can be applied to the flatness detection of display devices such as displays and smart blackboards. Specifically, since display devices such as displays and smart blackboards have certain requirements for flatness, when the display surface is uneven, it has a significant impact on the display effect. Therefore, the flatness detection method of this application embodiment can be applied to the display devices such as displays and smart blackboards during the first power-on or each power-on to perform flatness detection on the display devices such as displays and smart blackboards, so as to ensure the display effect of the display devices such as displays and smart blackboards and improve the user experience.

[0051] In one embodiment, before controlling at least one infrared transmitter to emit an infrared signal, the following steps are also included: In response to an activation command, at least one infrared transmitter is controlled to emit an infrared signal.

[0052] The power-on command is used to control the execution of the flatness detection method in this application embodiment. The power-on command can be generated in response to a control command input by the user. For example, after receiving the user's power-on command to turn on the display device, the power-on command can be generated to automatically execute the flatness detection method in this application embodiment to detect the flatness of the display device. This makes it easier for the user to promptly detect flatness abnormalities in the display device and make targeted adjustments, thereby improving the user experience.

[0053] A second embodiment of this application also provides a flatness detection method for detecting the flatness of an installed object surface. At least one first infrared emitter is provided on the first side of the surface to be measured, at least one second infrared emitter is provided on the second side of the surface to be measured, at least one first infrared receiver corresponding to the first infrared emitter is provided on the third side of the surface to be measured, and at least one second infrared receiver corresponding to the second infrared emitter is provided on the fourth side of the surface to be measured; wherein the first side and the second side can be adjacent sides.

[0054] like Figure 6 As shown, the method includes the following steps: S201: Control at least one first infrared transmitter to emit a first infrared signal, and control the at least one first infrared receiver to receive the first infrared signal; S202: Employ the at least one second infrared transmitter to transmit a second infrared signal, and employ the at least one second infrared receiver to receive the second infrared signal; S203: Obtain a first signal strength deviation value of the first infrared signal relative to the first initial signal strength, and obtain a second signal strength deviation value of the second infrared signal relative to the second initial signal strength; S204: If the first signal strength deviation value exceeds the first signal strength deviation threshold, and / or if the second signal strength deviation value exceeds the second signal strength deviation threshold, it is determined that the surface to be tested is uneven, the incident angle values ​​of the first infrared signal and the second infrared signal are obtained, the positional relationship between the surface to be tested and the object mounting plane is determined according to the incident angle values, and the second flatness adjustment information of the surface to be tested is obtained; wherein, the second flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested; S205: Display the second flatness adjustment information on the display device; The second flatness adjustment information is used to prompt the user to adjust the flatness of each corner of the surface to be tested. When it is determined that a corner of the surface to be tested is concave, the second flatness adjustment information is generated to remind the user to raise the corner; when it is determined that a corner of the surface to be tested is convex, the second flatness adjustment information is generated to remind the user to press down the corner.

[0055] like Figure 7 As shown, edges 501-504 correspond to the four edges of the surface to be measured. Infrared emitters are provided on the edges of the surface to be measured corresponding to edges 501 and 502, and infrared receivers are provided on the edges of the surface to be measured corresponding to edges 503 and 504. By setting infrared emitters and infrared receivers on two opposite edges of the surface to be measured, the surface to be measured is divided into 4 regions, each region corresponding to a corner.

[0056] When the infrared signal received by the infrared receiver on edge 503 determines that the left side is convex and the right side is concave, the infrared signal received by the infrared receiver on edge 504 further determines whether the upper left side is convex or the lower left side is convex, and whether the upper right side is concave or the lower right side is concave. Based on the infrared signals received by both edges 503 and 504, the flatness of each corner area is determined, for example, the upper left side is convex and the lower right side is concave in this embodiment, generating flatness adjustment information for the corresponding corners. Figure 7 The top left side displays the flatness adjustment information for "pressing down," while the bottom right side displays the flatness adjustment information for "lifting up."

[0057] For flat corner areas, a "Done" message can be displayed on the corresponding side, indicating that no adjustments are required.

[0058] The process of determining whether the surface is convex or concave in this embodiment can be found in step S103 of the first embodiment described above, and will not be repeated here.

[0059] In this embodiment, infrared emitters and receivers are respectively set on two opposite sides of the surface to be tested. The flatness of each area of ​​the surface to be tested is determined based on the deviation of the infrared signals received by the infrared receivers on the two opposite sides from the reference infrared signal. When the surface to be tested is uneven, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle of the infrared signal. Flatness adjustment information is generated to prompt the user to adjust the flatness of the corresponding area of ​​the surface to be tested, and the flatness adjustment information is displayed on the display device. Thus, the user can adjust the flatness of the corresponding area of ​​the surface of the object to be tested in a timely manner according to the flatness adjustment information, thereby improving the installation efficiency of the object to be tested.

[0060] like Figure 8 As shown, the third embodiment of this application also provides a flatness detection device for detecting the flatness of the surface of an object after installation. At least one infrared emitter is provided on the first side of the surface to be tested, and at least one infrared receiver is provided on the second side of the surface to be tested, opposite to the infrared emitter. This device can be implemented as all or part of an electronic device through software, hardware, or a combination of both. The device includes: The first infrared signal receiving module 601 is used to control at least one infrared transmitter to emit infrared signals and to receive the infrared signals using the at least one infrared receiver. The first deviation value acquisition module 602 is used to acquire the signal strength deviation value of the infrared signal relative to the intensity of the reference infrared signal. The first adjustment information acquisition module 603 is used to determine that the surface to be tested is uneven if the signal strength deviation value exceeds the signal strength deviation threshold, acquire the incident angle value of the infrared signal, determine the positional relationship between the surface to be tested and the object mounting plane based on the incident angle value, and generate first flatness adjustment information based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested; The first display module 604 is used to display the first flatness adjustment information on a display device.

[0061] It should be noted that the flatness detection device provided in the above embodiments is only illustrated by the division of the above functional modules when performing the flatness detection method. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the flatness detection device provided in the above embodiments and the flatness detection method of the first embodiment belong to the same concept, and its implementation process is detailed in the first embodiment, which will not be repeated here.

[0062] like Figure 9 As shown, the fourth embodiment of this application also provides a flatness detection device, which is applied to the flatness detection of the surface of an object after installation. At least one first infrared emitter is provided on the first side of the surface to be measured, at least one second infrared emitter is provided on the second side of the surface to be measured, at least one first infrared receiver corresponding to the first infrared emitter is provided on the third side of the surface to be measured, and at least one second infrared receiver corresponding to the second infrared emitter is provided on the fourth side of the surface to be measured. The device includes: The second infrared signal receiving module 701 is used to control at least one first infrared transmitter to transmit a first infrared signal and to control the at least one first infrared receiver to receive the first infrared signal. The third infrared signal receiving module 702 is used to transmit a second infrared signal using the at least one second infrared transmitter and to receive the second infrared signal using the at least one second infrared receiver. The second deviation value acquisition module 703 is used to acquire a first signal strength deviation value of the first infrared signal relative to the first initial signal strength, and to acquire a second signal strength deviation value of the second infrared signal relative to the second initial signal strength. The second adjustment information acquisition module 704 is used to determine that the surface to be tested is uneven if the first signal strength deviation value exceeds the first signal strength deviation threshold, and / or if the second signal strength deviation value exceeds the second signal strength deviation threshold; acquire the incident angle values ​​of the first infrared signal and the second infrared signal; determine the positional relationship between the surface to be tested and the object mounting plane based on the incident angle values; and acquire the second flatness adjustment information of the surface to be tested; wherein the second flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested. The second display module 705 is used to display the second flatness adjustment information on a display device.

[0063] It should be noted that the flatness detection device provided in the above embodiments is only illustrated by the division of the above functional modules when performing the flatness detection method. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the flatness detection device provided in the above embodiments and the flatness detection method in the second embodiment belong to the same concept, and its implementation process is detailed in the second embodiment, which will not be repeated here.

[0064] like Figure 10As shown, the fifth embodiment of this application also provides a frame 800, with at least one infrared emitter 801 disposed on the first side of the frame 800, and at least one infrared receiver 802 disposed on the second side of the frame opposite to the infrared emitter. The frame 800 is provided with a flatness detection device as described in the third embodiment.

[0065] like Figure 11 As shown, the sixth embodiment of this application also provides a frame 900, with at least one first infrared emitter 901 disposed on the first side of the frame, at least one second infrared emitter 903 disposed on the second side of the frame, at least one first infrared receiver 902 corresponding to the first infrared emitter 901 disposed on the third side of the frame, at least one second infrared receiver 904 corresponding to the second infrared emitter 903 disposed on the fourth side of the frame, and a flatness detection device as described in the fourth embodiment is disposed on the frame.

[0066] A seventh embodiment of this application also provides a display device, including at least two display screens and a frame as described in claim 9 or claim 10, wherein the at least two display screens are mounted on the frame.

[0067] The eighth embodiment of this application also provides a smart blackboard, including at least two smart blackboards and a frame as described in claim 9 or claim 10, wherein the at least two smart blackboards are mounted on the frame.

[0068] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A flatness detection method characterized by, It is used to detect the flatness of the surface of an object after installation. At least one infrared emitter is provided on the first side of the surface to be tested, and at least one infrared receiver is provided on the second side of the surface to be tested, opposite to the infrared emitter. The method includes the following steps: Control at least one infrared transmitter to emit infrared signals, and use the at least one infrared receiver to receive the infrared signals; Obtain the signal strength deviation value of the infrared signal relative to the intensity of the reference infrared signal; If the signal strength deviation exceeds the signal strength deviation threshold, it is determined that the surface to be tested is uneven. The incident angle value of the infrared signal is obtained, and the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value. First flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane. The first flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested. The first flatness adjustment information is displayed on the display device; The reference infrared signal refers to the infrared signal received by the infrared receiver positioned at the midpoint of the second side. There are N infrared transmitters and receivers, arranged sequentially along the second side of the surface to be measured. An infrared receiver is positioned at the midpoint of the second side of the surface to be measured; where N is an odd number and N≥3; If the signal strength deviation exceeds the signal strength deviation threshold, and the infrared signal with the signal strength deviation exceeding the signal strength deviation threshold is considered a front-end signal. The infrared signal received by the infrared receiver determines that the upper side of the surface to be tested is uneven. The incident angle value of the infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the upper side of the surface to be tested. If the signal strength deviation exceeds the signal strength deviation threshold, and the infrared signal with the signal strength deviation exceeding the signal strength deviation threshold is not forward-facing. The infrared signal received by the infrared receiver determines that the lower side of the surface under test is uneven. The incident angle value of the infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the lower side of the surface to be tested.

2. The flatness detection method according to claim 1, characterized in that, The step of generating the first flatness adjustment information based on the positional relationship between the surface to be measured and the mounting plane of the object specifically includes: If the incident angle value is greater than a preset threshold, it is determined that the surface to be tested is convex, and an installation prompt signal is generated to prompt the user to press down. If the incident angle value is less than a preset threshold, it is determined that the surface to be tested is concave, and an installation prompt signal is generated to prompt the user to lift it up.

3. The flatness detection method according to claim 1, characterized in that, After the step of acquiring the signal strength deviation value of at least one infrared signal, the method further includes: If the signal strength deviation is less than the signal strength deviation threshold, the surface to be tested is determined to be flat, and a prompt message is generated. The prompt information is displayed on the display device; wherein the prompt information is used to remind the user that the surface to be tested is installed flat.

4. The flatness detection method according to claim 1, characterized in that, Before controlling at least one infrared transmitter to emit an infrared signal, the following steps are also included: In response to an activation command, at least one infrared transmitter is controlled to emit an infrared signal.

5. A method for detecting flatness, characterized in that, This invention is used to detect the flatness of the surface of an object after installation. At least one first infrared emitter is provided on the first side of the surface to be tested, at least one second infrared emitter is provided on the second side of the surface to be tested, at least one first infrared receiver corresponding to the first infrared emitter is provided on the third side of the surface to be tested, and at least one second infrared receiver corresponding to the second infrared emitter is provided on the fourth side of the surface to be tested. The method includes the following steps: Control at least one first infrared transmitter to emit a first infrared signal, and control at least one first infrared receiver to receive the first infrared signal; The at least one second infrared transmitter emits a second infrared signal, and the at least one second infrared receiver receives the second infrared signal. Obtain a first signal strength deviation value of the first infrared signal relative to a first initial signal strength, and obtain a second signal strength deviation value of the second infrared signal relative to a second initial signal strength; If the first signal strength deviation exceeds a first signal strength deviation threshold, and / or if the second signal strength deviation exceeds a second signal strength deviation threshold, it is determined that the surface to be tested is uneven. The incident angle values ​​of the first infrared signal and the second infrared signal are obtained. The positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle values. Second flatness adjustment information of the surface to be tested is obtained. The second flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested. The second flatness adjustment information is displayed on the display device; The first initial signal refers to the first infrared signal received by the first infrared receiver positioned at the midpoint of the third side. There are N first infrared transmitters and N first infrared receivers, arranged sequentially along the third side of the surface to be measured. A first infrared receiver is positioned at the midpoint of the third side of the surface to be measured; where N is an odd number and N≥3; If the first signal strength deviation exceeds the first signal strength deviation threshold, and the infrared signal whose first signal strength deviation exceeds the first signal strength deviation threshold is considered a front-end signal... The first infrared signal received by the first infrared receiver determines that the upper side of the surface to be tested is uneven. The incident angle value of the first infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the upper side of the surface to be tested. If the first signal strength deviation exceeds the first signal strength deviation threshold, and the infrared signal whose first signal strength deviation exceeds the first signal strength deviation threshold is not forward... The first infrared signal received by the first infrared receiver determines that the lower side of the surface to be tested is uneven. The incident angle value of the first infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the lower side of the surface to be tested.

6. A flatness detection device, characterized in that, It is used to detect the flatness of the surface of an object after installation. At least one infrared emitter is provided on the first side of the surface to be tested, and at least one infrared receiver is provided on the second side of the surface to be tested, opposite to the infrared emitter. The device includes: A first infrared signal receiving module is used to control at least one infrared transmitter to emit infrared signals and to receive the infrared signals using the at least one infrared receiver. The first deviation value acquisition module is used to acquire the signal strength deviation value of the infrared signal relative to the intensity of the reference infrared signal. The first adjustment information acquisition module is used to determine that the surface to be tested is uneven if the signal strength deviation value exceeds the signal strength deviation threshold, acquire the incident angle value of the infrared signal, determine the positional relationship between the surface to be tested and the object mounting plane based on the incident angle value, and generate first flatness adjustment information based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested; The first display module is used to display the first flatness adjustment information on a display device; The reference infrared signal refers to the infrared signal received by the infrared receiver positioned at the midpoint of the second side. There are N infrared transmitters and receivers, arranged sequentially along the second side of the surface to be measured. An infrared receiver is positioned at the midpoint of the second side of the surface to be measured; where N is an odd number and N≥3; If the signal strength deviation exceeds the signal strength deviation threshold, and the infrared signal with the signal strength deviation exceeding the signal strength deviation threshold is considered a front-end signal. The infrared signal received by the infrared receiver determines that the upper side of the surface to be tested is uneven. The incident angle value of the infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the upper side of the surface to be tested. If the signal strength deviation exceeds the signal strength deviation threshold, and the infrared signal with the signal strength deviation exceeding the signal strength deviation threshold is not forward-facing. The infrared signal received by the infrared receiver determines that the lower side of the surface under test is uneven. The incident angle value of the infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the lower side of the surface to be tested.

7. A flatness detection device, characterized in that, This invention is used to detect the flatness of the surface of an object after installation. At least one first infrared emitter is provided on the first side of the surface to be tested, at least one second infrared emitter is provided on the second side of the surface to be tested, at least one first infrared receiver corresponding to the first infrared emitter is provided on the third side of the surface to be tested, and at least one second infrared receiver corresponding to the second infrared emitter is provided on the fourth side of the surface to be tested. The device includes: The second infrared signal receiving module is used to control at least one first infrared transmitter to transmit a first infrared signal and to control the at least one first infrared receiver to receive the first infrared signal. The third infrared signal receiving module is used to transmit a second infrared signal using the at least one second infrared transmitter and to receive the second infrared signal using the at least one second infrared receiver. The second deviation value acquisition module is used to acquire a first signal strength deviation value of the first infrared signal relative to the first initial signal strength, and to acquire a second signal strength deviation value of the second infrared signal relative to the second initial signal strength. The second adjustment information acquisition module is used to determine that the surface to be tested is uneven if the first signal strength deviation value exceeds the first signal strength deviation threshold, and / or if the second signal strength deviation value exceeds the second signal strength deviation threshold; acquire the incident angle values ​​of the first infrared signal and the second infrared signal; determine the positional relationship between the surface to be tested and the object mounting plane based on the incident angle values; and acquire the second flatness adjustment information of the surface to be tested; wherein the second flatness adjustment information is used to prompt the user to adjust the flatness of the surface to be tested. The second display module is used to display the second flatness adjustment information on a display device; The first initial signal refers to the first infrared signal received by the first infrared receiver positioned at the midpoint of the third side. There are N first infrared transmitters and N first infrared receivers, arranged sequentially along the third side of the surface to be measured. A first infrared receiver is positioned at the midpoint of the third side of the surface to be measured; where N is an odd number and N≥3; If the first signal strength deviation exceeds the first signal strength deviation threshold, and the infrared signal whose first signal strength deviation exceeds the first signal strength deviation threshold is considered a front-end signal... The first infrared signal received by the first infrared receiver determines that the upper side of the surface to be tested is uneven. The incident angle value of the first infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the upper side of the surface to be tested. If the first signal strength deviation exceeds the first signal strength deviation threshold, and the infrared signal whose first signal strength deviation exceeds the first signal strength deviation threshold is not forward... The first infrared signal received by the first infrared receiver determines that the lower side of the surface to be tested is uneven. The incident angle value of the first infrared signal is obtained, the positional relationship between the surface to be tested and the object mounting plane is determined based on the incident angle value, and first flatness adjustment information is generated based on the positional relationship between the surface to be tested and the object mounting plane; wherein, the first flatness adjustment information is used to prompt the user to adjust the flatness of the lower side of the surface to be tested.

8. A frame, characterized in that, The frame has at least one infrared emitter on its first side and at least one infrared receiver opposite the infrared emitter on its second side. The frame is equipped with the flatness detection device as described in claim 6.

9. A frame, characterized in that, The frame has at least one first infrared emitter on its first side, at least one second infrared emitter on its second side, at least one first infrared receiver corresponding to the first infrared emitter on its third side, at least one second infrared receiver corresponding to the second infrared emitter on its fourth side, and a flatness detection device as described in claim 7 is provided on the frame.

10. A display device, characterized in that, It includes at least two displays and a frame as described in claim 8 or claim 9, wherein the at least two displays are mounted on the frame.

11. A smart blackboard, characterized in that, It includes at least two smart blackboards and a frame as described in claim 8 or claim 9, wherein the at least two smart blackboards are mounted on the frame.

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