Screen adjustment device, system and method

Abstract

The present application relates to the field of screen display, and provides a screen adjustment device, system and method, wherein the screen adjustment device includes a driving device, a transmission assembly, a supporting assembly, a screen bearing member and a supporting body, wherein the driving device is connected to the first end of the transmission assembly to drive the transmission assembly to rotate around a rotation axis; the screen bearing member is used to carry a display screen, and is fixed to the transmission assembly to rotate around the rotation axis together with the transmission assembly; the supporting assembly is installed on the supporting body and connected to the second end of the transmission assembly, and the supporting assembly can allow the transmission assembly to rotate relative to the supporting body while supporting the transmission assembly. The screen adjustment device, system and method according to the present application solve the problems of low precision and poor stability in existing screen adjustment, and can achieve stable support and precise adjustment in screen adjustment.

Description

Technical Field

[0001] The present application relates to the field of screen display technology, and in particular to a screen adjustment device, system and method. Background Art

[0002] With the development of screen display technology, the application fields and scenarios of screen display are becoming more and more extensive. Existing display screens are generally fixed on screen brackets and display images in a specific direction. However, in some application environments, the screen orientation of the display screen needs to be adjustable to meet the viewing needs of different positions.

[0003] In this regard, some existing screen stands allow manual adjustment of screen rotation. However, in such screen stands, on the one hand, the convenience of manual adjustment is poor and the accuracy is not high; on the other hand, the stability of screen adjustment may be poor, the screen may shake, and there may be a risk of damaging the screen. Summary of the invention

[0004] In view of the problems of low manual adjustment accuracy and poor stability of screen adjustment in existing screen adjustment solutions, the present application provides a screen adjustment device, system and method, which can provide stable support for the rotation of the display screen by respectively arranging a drive device and a support assembly at both ends of the transmission assembly, and can conveniently and accurately adjust the rotation of the screen.

[0005] According to a first aspect of the present application, a screen adjustment device is provided, which includes a driving device, a transmission assembly, a supporting assembly, a screen bearing member and a supporting body, wherein the driving device is connected to a first end of the transmission assembly to drive the transmission assembly to rotate around a rotation axis; the screen bearing member is used to carry a display screen and is fixed to the transmission assembly to rotate around the rotation axis together with the transmission assembly; the supporting assembly is installed on the supporting body and connected to the second end of the transmission assembly, and the supporting assembly can allow the transmission assembly to rotate relative to the supporting body while supporting the transmission assembly.

[0006] Optionally, the supporting assembly includes a first bearing assembly, which includes a first bearing inner ring, a first bearing outer ring, and a first rolling body arranged between the first bearing inner ring and the first bearing outer ring, the first bearing inner ring is fixedly connected to the second end of the transmission assembly, and the first bearing outer ring is fixed to the support body.

[0007] Optionally, the transmission assembly includes a transmission shaft and a second bearing assembly, the second bearing assembly includes a second bearing inner ring, a second bearing outer ring and a second rolling body arranged between the second bearing inner ring and the second bearing outer ring, the second bearing inner ring is fixedly connected to the transmission shaft, and the second bearing outer ring is fixed to the support body.

[0008] Optionally, the second bearing assembly also includes a second bearing seat, which is sleeved on the transmission shaft and fixed to the support body. The transmission assembly also includes a thrust bearing, which is arranged between the transmission shaft and the second bearing seat in the axial direction of the transmission shaft.

[0009] Optionally, the screen adjustment device also includes a limit sensing device, which includes a proximity sensor and a limit member, the limit member includes a connecting part fixedly connected to the transmission assembly and a limit arm protruding from the connecting part, and the proximity sensor is arranged at a predetermined position at a distance from the connecting part that is less than or equal to the length of the limit arm.

[0010] According to a second aspect of the present application, a screen adjustment system is provided, the screen adjustment system comprising a display screen and the screen adjustment device according to the first aspect.

[0011] Optionally, the screen adjustment system also includes an image capture device and a control device, wherein the image capture device is fixed to the screen carrying component for obtaining a human body image in front of a display screen carried by the screen carrying component, and the image capture device is communicatively connected to the control device to send the human body image to the control device.

[0012] According to a third aspect of the present application, a screen adjustment method is provided, which is applied to a screen adjustment system, wherein the screen adjustment system includes a display screen, a screen adjustment device, an image capture device and a control device, wherein the screen adjustment device includes a driving device, a transmission assembly, a supporting assembly, a screen bearing member and a supporting body, wherein the driving device is connected to a first end of the transmission assembly to drive the transmission assembly to rotate around a rotation axis; the screen bearing member is used to carry the display screen and is fixed to the transmission assembly to rotate around the rotation axis together with the transmission assembly; the supporting assembly is installed on the supporting body and connected to a second end of the transmission assembly, wherein the supporting assembly can allow the transmission assembly to rotate relative to the supporting body while supporting the transmission assembly; the image capture device is fixed to the screen bearing member to obtain a human body image in front of the display screen carried by the screen bearing member, and the image capture device is communicatively connected to the control device to send the human body image to the control device.

[0013] The screen adjustment method comprises: receiving, by the control device, a human body image of a user acquired by the image capture device from the image capture device; identifying, by the control device, the movement of the user from the human body image, and controlling the drive device to drive the transmission component according to the movement of the user, so as to drive the display screen to move along with the movement of the user.

[0014] Optionally, the image capture device includes a feature point capture device and a portrait capture device, the human body image includes a first human body image and a second human body image, and the screen adjustment method further includes: receiving the first human body image captured by the feature point capture device from the feature point capture device through the control device, and identifying the position of the feature point from the first human body image, receiving the second human body image captured synchronously with the feature point capture device by the portrait capture device with the same field of view as the feature point capture device from the portrait capture device through the control device, and determining, based on the first human body image, through the control device, a position in the second human body image corresponding to the position of the feature point in the first human body image.

[0015] Optionally, the control device identifies the movement of the user from the human body image, and controls the drive device to drive the transmission component according to the movement of the user, so as to drive the display screen to move with the movement of the user, including: identifying the feature points of the user in the human body image at a first moment and the human body image at a second moment by the control device; determining the offset of the position of the feature point at the second moment relative to the position at the first moment according to the position of the feature point in the human body image at the first moment and the position of the feature point in the human body image at the second moment; and controlling the drive device to adjust the angular displacement of the transmission component according to the offset to compensate for the offset, so that the feature point moves to the position at the first moment in the human body image.

[0016] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 and Figure 2 A schematic diagram showing an electronic device including a screen adjustment device according to an embodiment of the present application is shown;

[0019] Figure 3 A perspective view showing a screen adjustment device according to an embodiment of the present application;

[0020] Figure 4 The screen adjustment device according to the embodiment of the present application is shown along Figure 3 A cross-sectional view taken along line I-I';

[0021] Figure 5 Shows Figure 4 An enlarged view of part A in FIG.

[0022] Figure 6 Shows Figure 4 An enlarged view of part B in FIG.

[0023] Figure 7 and Figure 8 Shows Figure 2 An enlarged view of part C from another perspective;

[0024] Fig. 9 A schematic diagram showing the installation of an encoder of a screen adjustment device according to an embodiment of the present application is shown;

[0025] Fig.10 A schematic diagram showing human body images at a first moment and a second moment in a screen adjustment method according to an embodiment of the present application is shown;

[0026] Fig.11 A schematic diagram of a first human image and a second human image in a screen adjustment method according to an embodiment of the present application is shown.

[0027] Icons: 10-screen adjustment device; 20-display screen; 30-housing; 40-image capture device; 50-mechanical button; 60-touch device; 70-manual operator; 80-reading interface; 90-base; 100-driving device; 110-driving rod; 120-driving motor; 200-transmission assembly; 210-transmission shaft; 211-transmission body; 212-first connecting shaft; 213-second connecting shaft; 220-second bearing assembly; 221-second bearing inner ring; 222-second bearing outer ring; 223-second rolling element; 224-second bearing seat; 230-thrust shaft Bearing; 300-supporting assembly; 310-first bearing assembly; 311-first bearing inner ring; 312-first bearing outer ring; 313-first rolling element; 320-first bearing seat; 400-screen bearing member; 500-support body; 510-main body; 520-first support part; 521-cover plate; 530-second support part; 600-coupling; 700-brake; 810-limit sensor device; 811-proximity sensor; 812-limit member; 820-encoding device; 821-encoder; 822-support member; 910-first shell; 920-second shell. DETAILED DESCRIPTION

[0028] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0032] A first aspect of the present application provides a screen adjustment device, which can provide stable support for the rotation of a display screen by respectively arranging a driving device and a supporting assembly at both ends of a transmission assembly, and can conveniently and accurately adjust the rotation angle of the screen.

[0033] It should be noted that although the screen adjustment device is described below using "an electronic device for cardiopulmonary resuscitation test training" as an example, it should be understood that the screen adjustment device according to the present application, the screen adjustment system including the screen adjustment device, and the screen adjustment method acting on the screen adjustment system can also be applied to other application scenarios.

[0034] Figure 1 An electronic device including a screen adjustment device 10 carrying a display screen 20 is shown, and the electronic device can be used for cardiopulmonary resuscitation test training, and its structure will be described in detail below. Figure 1 As shown, by rotating the screen adjustment device 10, the display orientation of the display screen 20 can be adjusted. Figure 1 In the embodiment, the driving mechanism of the screen adjustment device 10 is arranged inside the housing 30. In order to clearly show the structure of the screen adjustment device 10, Figure 2 The housing 30 is omitted and is Figures 3 to 9 A detailed view of the screen adjustment device 10 is shown in FIG.

[0035] The following will refer to Figures 3 to 9 A screen adjustment device according to an embodiment of the present application is described in detail.

[0036] like Figure 3 and Figure 4 As shown, the screen adjustment device 10 according to the embodiment of the present application may include a driving device 100 , a transmission assembly 200 , a supporting assembly 300 , a screen bearing member 400 and a supporting body 500 .

[0037] The driving device 100 may be connected to a first end (the lower end shown in the figure) of the transmission assembly 200 , and the driving device 100 may apply a rotational driving force to the transmission assembly 200 , so that the transmission assembly 200 rotates around a rotation axis.

[0038] The support assembly 300 can be installed on the support body 500 and connected to the second end of the transmission assembly 200. For example, it can be located between the support body 500 and the second end of the transmission assembly 200 (the upper end shown in the figure). Thus, when the driving device 100 drives the transmission assembly 200 to rotate around the rotation axis, the support assembly 300 can allow the transmission assembly 200 to rotate relative to the support body 500 while supporting the transmission assembly 200.

[0039] The screen bearing member 400 may be fixed to the transmission assembly 200 and may be used to bear the display screen 20. For example, the screen bearing member 400 may be formed in a plate shape, and the back side of the display screen 20 may be against the plate surface of the screen bearing member 400. For example, the display screen 20 may be fixed to the screen bearing member 400 by a fastening device such as a screw.

[0040] In this way, when the transmission assembly 200 rotates under the drive of the driving device 100 and the support of the supporting assembly 300, the screen supporting member 400 carrying the display screen can rotate around the rotation axis together with the transmission assembly 200, so as to adjust the display orientation of the display screen by adjusting the rotation angle of the transmission assembly 200.

[0041] In some existing screen stands, the display screen can be rotated by a shaft, but the structure of these shafts is usually relatively simple. Specifically, the shaft can be inserted into the rotating holes of two relatively rotating parts. During the adjustment process, in one case, it is necessary to overcome the sliding friction between the shaft and the rotating hole wall to achieve rotation (for example, when the shaft is horizontally or tilted); in another case, there may be a gap between the shaft and the rotating hole wall to allow the shaft to rotate relative to the rotating hole wall (for example, when the shaft is vertically set). Here, the former may require a large adjustment force to achieve rotation, which is inconvenient for the user to operate for a screen stand that requires manual adjustment; although the latter is easy to rotate, it may cause shaking during rotation due to the presence of the gap, and the stability is poor.

[0042] In the above-mentioned embodiment of the present application, by applying driving force and supporting force at both ends of the transmission component 200 respectively, the transmission component 200 can drive the display screen to rotate stably under the action of the driving force. In particular, since support is provided at the end opposite to the driving end of the transmission component 200 during the rotation, the transmission component 200 will not shake during the rotation.

[0043] Figure 5 and Figure 6 A detailed view of an exemplary connection structure of the drive device 100, the transmission assembly 200, the bearing assembly 300 and the support body 500 is shown.

[0044] like Figure 4 and Figure 5 As shown, the support body 500 may include a main body portion 510 and a first support portion 520 extending from the main body portion 510 to one side of the main body portion 510 , and the support assembly 300 may be installed on the first support portion 520 .

[0045] The support assembly 300 may include a first bearing assembly 310 including a first bearing inner ring 311 , a first bearing outer ring 312 , and a first rolling element 313 disposed between the first bearing inner ring 311 and the first bearing outer ring 312 .

[0046] Here, the first bearing inner ring 311 may be fixedly connected to the transmission assembly 200, and the first bearing outer ring 312 may be fixed to the support body 500. In this way, the first bearing inner ring 311 may rotate together with the transmission assembly 200, and since the first rolling element 313 is provided between the first bearing outer ring 312 and the first bearing inner ring 311, the first bearing assembly may be allowed to support the transmission assembly 200 while allowing the transmission assembly 200 to rotate relative to the support body 500 (e.g., the first support portion 520).

[0047] As an example, the support assembly 300 may further include a first bearing seat 320, and the first bearing seat 320 may be fixed to the first support portion 520, and the first bearing outer ring 312 may be fixed to the first support portion 520 by being fixed to the first bearing seat 320. In one example, the first bearing seat 320 may be independent of the components of the first support portion 520 and fixedly installed in the first support portion 520, for example, the first bearing seat 320 may be fixed to the first support portion 520 by welding, riveting, mortise and tenon, etc. In another example, the first bearing seat 320 may be formed integrally with the first support portion 520.

[0048] Here, the first support portion 520 may be formed with a hollow cavity, and may have a cover plate 521 that can open and close the hollow cavity. The support assembly 300 may be disposed in the hollow cavity, and the cover plate 521 may allow maintenance and operation of components in the hollow cavity.

[0049] like Figure 4 and Figure 6 As shown, the transmission assembly 200 may include a transmission shaft 210 and a second bearing assembly 220, wherein the second bearing assembly 220 includes a second bearing inner ring 221, a second bearing outer ring 222, and a second rolling body 223 disposed between the second bearing inner ring 221 and the second bearing outer ring 222. The second bearing inner ring 221 is fixedly connected to the transmission shaft 210, and the second bearing outer ring 222 may be fixed to the support body 500.

[0050] For example, the support body 500 may further include a second support portion 530 extending from the main body portion 510 toward the one side of the main body portion 510 , and the second bearing assembly 220 may be mounted on the second support portion 530 .

[0051] In this way, the second bearing inner ring 221 can rotate together with the transmission shaft 210, and since the second rolling element 223 is provided between the second bearing outer ring 222 and the second bearing inner ring 221, the first bearing assembly can allow the transmission shaft 210 to rotate relative to the support body 500 (for example, the second support portion 530) while supporting the transmission shaft 210. Here, the second bearing assembly 220 can work together with the first bearing assembly 310 to further improve the rotation stability of the transmission shaft 210.

[0052] As an example, the second bearing assembly 220 may further include a second bearing seat 224, the second bearing seat 224 may be fixed to the second support portion 530, and the second bearing outer ring 222 may be fixed to the second support portion 530 by being fixed to the second bearing seat 224. In one example, the second bearing seat 224 may be independent of the components of the second support portion 530 and fixedly installed in the second support portion 530, for example, the second bearing seat 224 may be fixed to the second support portion 530 by welding, riveting, mortise and tenon, etc. In another example, the second bearing seat 224 may be formed integrally with the second support portion 530.

[0053] In addition, the transmission shaft 210 may include a plurality of segments that are detachably fixedly connected, so that, on the one hand, the assembly between the transmission shaft 210 and other components can be facilitated; on the other hand, the gravity effect of the display screen 20 can be transmitted and dispersed on the transmission body of the transmission shaft 210, which is particularly beneficial for supporting heavy-load screens. Figure 2 As shown, the transmission shaft 210 may include a transmission body 211 and a first connection shaft 212 and a second connection shaft 213 fixedly connected to the transmission body 211, the first connection shaft 212 may be located at the second end of the transmission assembly 200, and the second connection shaft 213 may be located at the first end of the transmission assembly 200. In this way, the first bearing inner ring 311 may be fixedly connected to the first connection shaft 212 of the transmission assembly 200, and since the first connection shaft 212 may be detachably connected to the transmission body 211, it is convenient to connect the first connection shaft 212 to the first bearing inner ring 311. Similarly, the first bearing inner ring 311 may be fixedly connected to the second connection shaft 213 of the transmission assembly 200, and since the second connection shaft 213 may be detachably connected to the transmission body 211, it is convenient to connect the second connection shaft 213 to the first bearing inner ring 311. For example, the first connection shaft 212 and the second connection shaft 213 may be detachably connected to the transmission body 211 respectively by positioning screws.

[0054] The second connecting shaft 213 can be fixedly connected to the driving device 100, for example, Figure 4 As shown, the driving device 100 may include a driving rod 110 and a driving motor 120 , the driving rod 110 is driven by the driving motor 120 , and the second connecting shaft 213 may be fixedly connected to the driving rod 110 via a coupling 600 .

[0055] As an example, the transmission body 211 may be formed as a hollow shaft tube, so that the overall weight of the transmission assembly 200 can be reduced, thereby reducing the driving force and the energy consumption of the driving device. The screen bearing member 400 may be fixed to the transmission body 211 .

[0056] In an embodiment of the present application, when the rotation axis of the screen adjustment device is vertically arranged, the first bearing assembly arranged at the upper end can offset the tilting pulling force caused by the fact that the center of gravity of the display screen 20 and the rotation center of the transmission assembly 200 are not on the same vertical line, and the second bearing assembly arranged at the lower end can reduce the force acting on the display screen 20 in the vertical direction.

[0057] In addition, if Figure 6 As shown, the transmission assembly 200 may further include a thrust bearing 230, which is disposed between the second bearing seat 224 and the second connecting shaft 213 in the axial direction of the second connecting shaft 213. In this way, the thrust bearing 230 can allow the transmission assembly 200 to rotate relative to the second bearing seat 224, and the thrust bearing 230 can distribute the weight of the transmission assembly 200 with the display screen fixed thereon to the supporting body 500, specifically, to the second supporting portion 530 through the second bearing seat 224, and the thrust bearing 230 can reduce the friction between the transmission assembly 200 and the second bearing seat 224 by replacing the sliding motion with the rolling motion, so that the provision of the above-mentioned thrust bearing 230 is particularly conducive to the rotation bearing of the heavy-load display screen.

[0058] Specifically, the second bearing seat 224 can be formed into a hollow cylindrical shape and can be sleeved outside the second connecting shaft 213. The outer wall of the second connecting shaft 213 can be formed with a first flange protruding radially outward, and the inner wall of the second bearing seat 224 can be formed with a second flange protruding radially inward. The thrust bearing 230 can be arranged between the first flange and the second flange in the axial direction of the second connecting shaft 213.

[0059] According to the embodiment of the present application, by providing a thrust bearing, the rotation of the screen adjustment device can be allowed to achieve smooth rotation of the display screen with smaller motor power and torque, and the structure of the screen adjustment device has strong stability.

[0060] Return to reference Figure 4 and Figure 5The screen adjustment device 10 may further include a brake 700, which is connected to the transmission assembly 200, for example, it may be installed on the first connecting shaft 212 to limit the rotation of the transmission assembly 200 and weaken the inertial force generated at the end stage of the screen rotation process. The brake 700 may be disposed in the hollow cavity of the first support portion 520. As an example, the brake 700 may be an electromagnetic brake device, and the brake 700 may be made of a magnetic material. When the brake 700 is powered off, the brake 700 may lock / lock the first connecting shaft 212 to brake the first connecting shaft 212; when the brake 700 is powered on, the brake 700 may generate an electromagnetic force to release the lock on the first connecting shaft 212 to allow the first connecting shaft 212 to rotate.

[0061] The screen adjustment device 10 may further include a limit sensor device 810, which can limit the rotation of the transmission assembly 200. Figure 7 and Figure 8 The installation structure and working principle of the limit sensor device 810 are described in detail.

[0062] like Figure 7 and Figure 8 As shown, the screen adjustment device 10 may include a first housing 910 and a second housing 920, wherein, in order to clearly illustrate the limit sensor device 810, Figure 8 The second housing 920 is omitted in the figure. The position limiting sensing device 810 may include a proximity sensor 811 and a position limiting member 812. The position limiting member 812 may rotate together with the transmission assembly 200, for example, and may be mounted on the driving rod 110 (eg, Figure 8 As shown) or the second connecting shaft 213, the limiting member 812 may include a connecting portion and a limiting arm extending to one side from the connecting portion, the connecting portion may be connected to the drive rod 110 and rotate together with the transmission assembly 200, when the connecting portion rotates, the limiting arm rotates together with the connecting portion, the first end of the limiting arm may be connected to the connecting portion, and the second end of the limiting arm (i.e., the free end) may move circumferentially with the rotation of the connecting portion. The proximity sensor 811 may be set at a predetermined position where the distance from the connecting portion is less than or equal to the length of the limiting arm, when the second end of the limiting arm approaches the proximity sensor 811 during the rotation process, the proximity sensor 811 may sense the approach of the second end of the limiting arm, and generate a sensing signal in response to the approach of the limiting arm, the sensing signal may be used to prompt the transmission assembly to rotate to a predetermined limit angle, so as to timely control the drive device to stop the driving operation.

[0063] exist Figure 7 Figure 8In the example, two proximity sensors 811 are provided, and the angle formed between the two proximity sensors and the rotation axis can be 180 degrees, that is, the maximum rotation angle of the screen adjustment device is 180 degrees, but the present application is not limited to this, and according to actual needs, the screen adjustment device can realize any angle rotation around the rotation axis within the range of 0 degrees to 360 degrees.

[0064] like Figure 7 As shown, the second housing 920 may have a through hole, through which the transmission assembly may pass, and the first housing 910 may be detachably fixed to the second housing 920. Here, the first housing 910 may cover the first end portion of the transmission assembly 200 and the drive device 100, and the second housing 920 may be used to support the first housing 910. When the first end portion of the transmission assembly 200 and the drive device 100 need to be maintained, since the first housing 910 is not directly connected / contacted with the transmission assembly and the drive device, the first housing 910 may be disassembled without affecting the operation of the transmission assembly and the drive device. The proximity sensor 811 may be installed between the outer wall of the second housing 920 and the inner wall of the first housing 910 to prevent other components in the second housing 920 from affecting the sensing result of the proximity sensor 811.

[0065] like Figure 7 and Fig. 9 As shown, the screen adjustment device 10 may further include an encoding device 820, which may include an encoder 821 and a support member 822. The encoder 821 may rotate together with the transmission assembly to sense the angular displacement of the transmission assembly 200. The support member 822 may be used to support the encoder 821.

[0066] Specifically, the encoder 821 may include an inner ring portion and an outer ring portion, the inner ring portion may be fixed to the transmission assembly 200 (eg, the second connecting shaft 213), and the outer ring portion may be supported by the support member 822. Fig. 9 As shown, the first part of the support member 822 can be fixed to the second shell 920, and the second part of the support member 822 can be fixed to the outer ring part. The first part and the second part can be connected by a connecting part. For example, the support member 822 can have a U-shaped cross-section, and the connecting part can have an arc shape, so that it can support the second part while allowing and absorbing slight vibration of the second part relative to the first part in the axial direction of the transmission assembly, so as to ensure the sensing accuracy of the encoder 821.

[0067] A second aspect of the present application provides a screen adjustment system, which may include the screen adjustment device 10 according to the first aspect of the present application and a display screen 20 installed on the screen adjustment device.

[0068] The display screen 20 may be a human-computer interaction screen for human-computer interaction with an operator. Specifically, the display screen 20 may be used to display information related to the operator's actions. While the operator is making an action, he may see feedback data related to the action through the display screen 20 .

[0069] Return to reference Figure 1 and Figure 2 The screen adjustment system may further include an image capture device 40 and a control device (not shown). The image capture device 40 is fixed to the screen bearing member 400 of the screen adjustment device 10 to obtain a human body image in front of the display screen 20 carried by the screen bearing member 400. The image capture device 40 can be connected to the control device for communication to send the captured human body image to the control device.

[0070] Here, the image capture device 40 can be a human body image capture device such as an infrared sensor, a camera, etc. Correspondingly, the human body image can be an image such as an infrared imaging image, a visible light imaging image, etc., or it can be a frame in a video captured by the image capture device 40.

[0071] The control device can identify the movement of the human body from the human body image and calculate the amount of movement, thereby generating a control signal based on the amount of movement to control the screen adjustment device to rotate an angular displacement corresponding to the amount of movement. For example, the control device can be electrically connected to the drive device 100 to control the direction and magnitude of the driving force output by the drive motor of the drive device 100. Here, the control device can be, for example, a single chip microcomputer.

[0072] Specifically, the encoder, proximity sensor, and drive motor of the screen adjustment device 10 can all be connected to the control device for communication, so that the encoder can send the sensed rotational angular displacement to the control device, and the control device can determine whether the current rotational angular displacement reaches the desired angular displacement to control the driving operation of the drive motor; the proximity sensor can send a sensing signal to the control device when sensing the approach of the limit arm, and the control device can control the drive motor to stop driving in response to the sensing signal. However, the present application is not limited to this, and in the absence of a control device, the drive adjustment of the drive device can be achieved by manual control to adjust the rotation angle of the screen adjustment device.

[0073] In addition, Figure 1 and Figure 2In the example shown, the screen adjustment system may further include a mechanical button 50, a touch device 60, a manual operator 70, a reading interface 80, and a base 90. The mechanical button 50, the touch device 60, the manual operator 70, and the reading interface 80 may be disposed on the housing 30, and the housing 30 and the screen adjustment device 10 described above may be mounted on the base 90. In some embodiments, the control device may be disposed inside the base 90.

[0074] The manual operator 70 can manually operate the screen rotation angle, and it can be movable. When the screen adjustment system includes both the manual operator 70 and the control device, the manual operator 70 has a higher control priority over the screen adjustment device than the control device. For example, when the manual operator 70 and the control device send control signals to the screen adjustment device at the same time, the screen adjustment device can be controlled only by the manual operator 70. The manual operator 70 can allow the user to interrupt the automatic rotation control of the control device and adjust it according to the user's needs. In this way, manual control and automatic tracking interactive control of the screen can be realized, which can improve the overall operability of the system and provide users with more operation options.

[0075] The mechanical button 50 and the touch device 60 (eg, a touch screen) can be used for the operator to input information or instructions. The reading interface 80 can be, for example, an identity recognition card reader capable of recognizing an ID card and a fingerprint, and the operator can enter identity information through the reading interface 80 .

[0076] As an example, the screen adjustment system according to the embodiment of the present application can be a human-computer interaction device platform for cardiopulmonary resuscitation test training. The user can perform cardiopulmonary resuscitation test or training on the platform, and can observe the current operation information on the display screen, such as operation pressure, position and other data. Since the user may move during the operation, the screen adjustment system according to the present application can allow the display screen to track the user's movement, so that the display direction is always facing the user, so that the user can read the display information on the display screen.

[0077] The screen adjustment system according to the embodiment of the present application can realize real-time interactive operation between the control screen and the operator, and the display screen can be easily rotated within a certain angle range within a vertical height, and the entire control process can ensure the stability of the overall structure.

[0078] A third aspect of the present application provides a screen adjustment method, which can identify the user's movement by capturing the user's body image, thereby enabling the display screen to track the user.

[0079] The screen adjustment method according to the embodiment of the present application acts on a screen adjustment system. The screen adjustment system may be, for example, the screen adjustment system as described in the second aspect of the present application. Specifically, the screen adjustment system may include a display screen, a screen adjustment device, an image capture device and a control device.

[0080] Here, the screen adjustment device may include a driving device, a transmission assembly, a supporting assembly, a screen bearing member and a supporting body, wherein the driving device is connected to the first end of the transmission assembly to drive the transmission assembly to rotate around the rotation axis; the screen bearing member is used to carry the display screen and is fixed to the transmission assembly to rotate around the rotation axis together with the transmission assembly; the supporting assembly is installed on the supporting body and connected to the second end of the transmission assembly, and the supporting assembly can allow the transmission assembly to rotate relative to the supporting body while supporting the transmission assembly. The image capture device can be fixed to the screen bearing member to obtain a human body image in front of the display screen carried by the screen bearing member, and the image capture device is connected to the control device in communication to send the human body image to the control device.

[0081] According to an embodiment of the present application, a screen adjustment method may include: receiving a body image of a user acquired by an image capture device from an image capture device through a control device; identifying the movement of the user from the body image through the control device, and controlling a drive device to drive a transmission component according to the movement of the user, so as to drive the display screen to move with the movement of the user.

[0082] The image capturing device may capture a human body image of a user located in front of the display screen, and the human body image may be an infrared sensing image or a visible light imaging image.

[0083] The control device may receive the human body image from the image capture device and recognize the user's movement therefrom.

[0084] Specifically, the control device can identify the feature points of the user in the human body image at the first moment and the human body image at the second moment; determine the offset of the position of the feature point at the second moment relative to the position at the first moment based on the position of the feature point in the human body image at the first moment and the position of the feature point in the human body image at the second moment; and control the driving device to adjust the angular displacement of the transmission component according to the offset to compensate for the offset so that the feature point remains at the position at the first moment in the human body image.

[0085] Here, the feature point may be a point on any part of the user's body, such as the head, arm, etc., which may represent the user's action or movement, and may be selected according to the needs of screen tracking.

[0086] The first moment and the second moment may be different moments. The human body image at the first moment and the human body image at the second moment may be human body images captured by an image capture device at the first moment and the second moment respectively, or may be frames at different moments in a video captured by an image capture device.

[0087] The control device can identify preset feature points from the received human body image at the first moment and the received human body image at the second moment, for example, the positions of the feature points on the head in the two images, which can be represented by coordinates.

[0088] For example, Fig.10 As shown, it can be recognized that the coordinates of the head feature point P1 in the human image S1 at the first moment can be (a1, b1), and the coordinates of the head feature point P1 in the human image S1' at the second moment can be (a1+Δ, b1), wherein in the image S1 and the image S1', the line A-A' is the standard line in the horizontal direction of the image; in the image S1', the line B-B' is the horizontal position of the feature point at the second moment. Here, the standard line may refer to a virtual line on which the feature point needs to be always kept in order to track the user, for example, the standard line may be the midline of the image in the horizontal or vertical direction.

[0089] Furthermore, if Fig.10 As shown, a human body image middle stop area SΔt can be set, and the human body image middle stop area SΔt includes the area between the line Al-Al' on the left and the line Ar-Ar' on the right, and the line Al-Al' and the line Ar-Ar', that is, the line Al-Al' and the line Ar-Ar' are boundary lines. The two distances from the boundary line Al-Al' and the boundary line Ar-Ar' to the above-mentioned standard line A-A' are equal, for example, both Fig.10 Δ1 shown in . Δ1 is greater than or equal to zero, Fig.10 The example shown in FIG. 1 is that Δ1 is greater than zero, based on Fig.10 , when the horizontal position line BB' where the head feature point P1 in the human body image S1' at the second moment is located is within the middle stop area SΔt of the human body image (for example, the position line BB' is between the boundary line Al-Al' and the boundary line Ar-Ar', or the position line BB' coincides with one of the boundary line Al-Al' and the boundary line Ar-Ar'), the screen adjustment device does not rotate; when the position line BB' moves beyond the middle stop area SΔt of the human body image, the screen adjustment device rotates to compensate for the offset. Here, the boundary line may refer to a virtual line used to define the middle stop area SΔt of the human body image, for example, the boundary line may be a line in the horizontal or vertical direction of the image that is consistent with the extension direction of the standard line.

[0090] According to the two images (i.e. Fig.10 The offset is calculated by using the coordinates of the feature point P1 in the image S1 and the image S1'. Fig. 9 For example, the offset of the position of the feature point P1 at the second moment relative to the position at the first moment may be Δ. In order to keep the feature point P1 on the standard line A-A' at all times, when the offset of the position of the feature point P1 at the second moment relative to the position at the first moment is identified, a control signal may be sent to the driving device through the control device to drive the screen adjustment device to rotate through the driving device to compensate for the offset Δ, so that the feature point P1 moves to the position at the first moment, thereby realizing tracking of the user.

[0091] Here, the positive and negative directions can be specified for the offset Δ. For example, when Δ is a negative value, it can be determined that the user is offset to the left; when Δ is a positive value, it can be determined that the user is offset to the right; when Δ is 0, it can be determined that no offset occurs, that is, the user has not moved. In addition, in the example where Δ1 is equal to zero, which is not shown, it is obvious that the boundary line Al-Al', the boundary line Ar-Ar' and the standard line A-A' coincide. In this example, the middle stop area SΔt of the human image is essentially the standard line A-A', and as long as the position line B-B' deviates from the standard line A-A', the screen adjustment device rotates to compensate for the offset. The calculation method of the offset has been mentioned in the above description and will not be repeated here.

[0092] In an embodiment of the present application, the method of identifying feature points can be selected as needed. For example, the image capture device can be a human skeleton sensor (e.g., a Kinect sensor), and the joint points of the human body can be identified from the human skeleton image captured by the human skeleton sensor, and the joint points are used as feature points. In this embodiment, since the Kinect sensor can obtain the three-dimensional coordinate data of the human skeleton, it is possible to determine targets at different distances from the screen based on the three-dimensional coordinates, such as the user closest to the screen, so that a single user can be selected from multiple users for tracking.

[0093] However, the present application is not limited thereto, and the method for identifying feature points may also be other existing feature point recognition schemes such as face recognition.

[0094] In existing human tracking technologies, the method of tracking a user's attention is generally to use an eye tracker to determine the user's real-time attention through eye tracking technology. The eye tracker usually uses an infrared camera to obtain image information of the human eye, determines the center of the pupil through an image algorithm, and calculates the eye's gaze point on the screen based on a mapping relationship model. However, in this human tracking technology, not only is the cost of the eye tracker high, but the subsequent processing algorithm is also more complicated, and the algorithm cannot be used when the eyeball is covered. In other words, this human tracking technology has high requirements for the use environment.

[0095] In the screen adjustment method according to the embodiment of the present application, human body tracking can be achieved by identifying feature points of any part of the human body. It has strong universality and is suitable for human body tracking applications in multiple fields.

[0096] Furthermore, as an example, the image capturing device may include a feature point capturing device and a portrait capturing device, and the human body image may include a first human body image and a second human body image.

[0097] In this example, the screen adjustment method also includes: receiving a first human body image captured by the feature point capture device from the feature point capture device through the control device, and identifying the position of the feature point from the first human body image, receiving a second human body image captured by the portrait capture device synchronously with the feature point capture device with the same field of view as the feature point capture device from the portrait capture device through the control device, and determining, through the control device, a position in the second human body image corresponding to the position of the feature point in the first human body image based on the first human body image.

[0098] Specifically, if Fig.11 As shown, the coordinates (a3, b3) of the feature point P3 can be extracted from the first human image S3, and the point P4 corresponding to the feature point P3 in the first human image S3 can be determined in the second human image S4 based on the proportional relationship between the horizontal and vertical dimensions of the first human image S3 and the horizontal and vertical dimensions of the second human image S4, and the coordinates of the point P4 in the second human image S4 can be determined to be (a4, b4), that is, there is a conversion expression S3 (width, height) / S4 (width, height) = P3 (a3, b3) / P4 (a4, b4). In this way, the position or area of ​​the feature point of interest can be extracted from the second human image S4.

[0099] In the case where the image capture device includes a feature point capture device and a portrait capture device, the position of the feature point in the second human image can also be determined based on the first human image through the above process, and then the human body tracking can be achieved based on the offset of the feature point in the second human image. That is, the reference point can be performed based on the second human image. Fig. 9 The calculation process described.

[0100] Here, the feature point capture device may be the Kinect sensor described above, and the feature point P3 may be a joint point in the human skeleton, such as a head joint point. The portrait capture device may be a visible light imaging device, such as a camera, a video camera, etc., and the feature point P4 may be a specific point in the real scene image. Therefore, based on the above method, a specific part of the human body (e.g., the head) may be determined from the real scene image based on the human skeleton image captured by the Kinect sensor, so that a partial image of the specific part may be captured from the real scene image for subsequent display or processing.

[0101] In this way, the Kinect sensor can be used to obtain the spatial coordinates and joints of the human skeleton, and real-life images can be collected. The target in the real-life image can be locked by calculation, and it can be calculated whether the user's avatar and user position are offset, so that the nearest user can be captured in a timely, fast and effective manner. The Kinect sensor can be used to determine the offset of the relative position with the user and effectively follow the user's rotation.

[0102] The screen adjustment method according to the embodiment of the present application can be used in the screen adjustment system described above. By combining motor drive, angle sensing, image recognition and drive control, and through the front and rear logical control of the mechanical structure and the comprehensive judgment of the sensor signal, the corresponding function of screen rotation adjustment can be realized. The above-mentioned screen adjustment method can be automatically controlled by the control device throughout the process, thereby realizing automatic tracking and rotation of the screen, allowing users to better interact with the device.

[0103] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the method described above can refer to the corresponding process in the aforementioned device embodiment, and will not be repeated here.

[0104] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A screen adjustment device, characterized in that: The screen adjustment device comprises a driving device, a transmission assembly, a supporting assembly, a screen bearing member and a supporting body. The driving device is connected to the first end of the transmission assembly to drive the transmission assembly to rotate around the rotation axis; The screen bearing member is used to bear the display screen and is fixed to the transmission assembly so as to rotate around the rotation axis together with the transmission assembly; The support assembly is mounted on the support body and connected to the second end of the transmission assembly, and the support assembly can allow the transmission assembly to rotate relative to the support body while supporting the transmission assembly; The screen adjustment device further comprises a limit sensing device, the limit sensing device comprises a proximity sensor and a limit member, the limit member comprises a connection part fixedly connected to the transmission assembly and a limit arm protruding from the connection part, the proximity sensor is arranged at a predetermined position at a distance from the connection part that is less than or equal to the length of the limit arm; Among them, the screen adjustment device also includes a first shell and a second shell, the second shell has a through hole, the transmission assembly passes through the through hole, the first shell is detachably fixed to the second shell, the first shell covers the first end portion of the transmission assembly and the driving device, the second shell is used to support the first shell, the first shell is not directly connected to and in contact with the transmission assembly and the driving device, and the proximity sensor is installed between the outer wall of the second shell and the inner wall of the first shell.

2. The screen adjustment device according to claim 1, characterized in that: The support assembly includes a first bearing assembly, which includes a first bearing inner ring, a first bearing outer ring, and a first rolling body arranged between the first bearing inner ring and the first bearing outer ring. The first bearing inner ring is fixedly connected to the second end of the transmission assembly, and the first bearing outer ring is fixed to the support body.

3. The screen adjustment device according to claim 2, characterized in that: The transmission assembly includes a transmission shaft and a second bearing assembly, the second bearing assembly includes a second bearing inner ring, a second bearing outer ring and a second rolling body arranged between the second bearing inner ring and the second bearing outer ring, the second bearing inner ring is fixedly connected to the transmission shaft, and the second bearing outer ring is fixed to the support body.

4. The screen adjustment device according to claim 3, characterized in that: The second bearing assembly also includes a second bearing seat, which is sleeved on the transmission shaft and fixed to the support body. The transmission assembly also includes a thrust bearing, which is arranged between the transmission shaft and the second bearing seat in the axial direction of the transmission shaft.

5. A screen adjustment system, characterized in that: The screen adjustment system comprises a display screen and a screen adjustment device according to any one of claims 1-4.

6. The screen adjustment system according to claim 5, characterized in that: The screen adjustment system also includes an image capture device and a control device. The image capture device is fixed to the screen carrying component to obtain a human body image in front of a display screen carried by the screen carrying component. The image capture device is communicatively connected to the control device to send the human body image to the control device.

7. A screen adjustment method, characterized in that: The screen adjustment method acts on a screen adjustment system, which includes a display screen, a screen adjustment device, an image capture device and a control device. The screen adjustment device comprises a driving device, a transmission assembly, a supporting assembly, a screen bearing member and a supporting body, wherein the driving device is connected to a first end of the transmission assembly to drive the transmission assembly to rotate around a rotation axis; The screen bearing member is used to bear the display screen and is fixed to the transmission assembly so as to rotate around the rotation axis together with the transmission assembly; the support assembly is mounted on the support body and connected to the second end of the transmission assembly, and the support assembly can allow the transmission assembly to rotate relative to the support body while supporting the transmission assembly. The screen adjustment device further comprises a limit sensor device, the limit sensor device comprises a proximity sensor and a limit member, the limit member comprises a connection part fixedly connected to the transmission assembly and a limit arm protruding from the connection part, the proximity sensor is arranged at a predetermined position at a distance from the connection part that is less than or equal to the length of the limit arm, The screen adjustment device further comprises a first shell and a second shell, the second shell having a through hole, the transmission assembly passing through the through hole, the first shell being detachably fixed to the second shell, the first shell covering a first end portion of the transmission assembly and the driving device, the second shell being used to support the first shell, the first shell not being directly connected to and in contact with the transmission assembly and the driving device, and the proximity sensor being installed between an outer wall of the second shell and an inner wall of the first shell; The image capture device is fixed to the screen bearing member to obtain a human body image in front of the display screen carried by the screen bearing member, and the image capture device is communicatively connected with the control device to send the human body image to the control device. The screen adjustment method comprises: receiving, by the control device, from the image capturing device, the human body image of the user acquired by the image capturing device; The control device identifies the movement of the user from the human body image, and controls the driving device to drive the transmission component according to the movement of the user, so as to drive the display screen to move along with the movement of the user; The image capture device includes a feature point capture device and a portrait capture device, the human body image includes a first human body image and a second human body image, and the screen adjustment method further includes: receiving the first human body image captured by the feature point capturing device from the feature point capturing device through the control device, and identifying the position of the feature point from the first human body image, Receiving, by the control device, from the portrait capture device, the second human body image captured synchronously with the feature point capture device with the same field of view as the feature point capture device, and determining, by the control device, based on the first human body image, a position in the second human body image corresponding to a position of the feature point in the first human body image; wherein the control device identifies the characteristic points of the user in the human body image at the first moment and the human body image at the second moment; Determine, according to the position of the feature point in the human body image at the first moment and the position of the feature point in the human body image at the second moment, an offset of the position of the feature point at the second moment relative to the position at the first moment; According to the offset, controlling the driving device to adjust the angular displacement of the transmission assembly to compensate for the offset so that the feature point moves to the position at the first moment in the human body image; The screen adjustment method further includes: setting a middle stop area of ​​the human image, the middle stop area of ​​the human image including a first boundary line located on one side, a second boundary line located on the other side, and an area between the first boundary line and the second boundary line; Among them, when the feature points in the human body image at the second moment are in the middle stop area of ​​the human body image, the screen adjustment device does not rotate; when the feature points in the human body image at the second moment exceed the middle stop area of ​​the human body image, the screen adjustment device rotates to compensate for the offset.

Images