Automatic lifting method and automatic lifting device convenient for teaching

Abstract

The present invention discloses an automatic lifting method and an automatic lifting device that are convenient for teaching, which relate to the technical field of teaching equipment, and solve the technical problem that existing equipment such as writing whiteboards cannot realize automatic lifting according to the heights of different teachers. The method comprises: obtaining the automatic lifting mode of at least one lifting body; when a user approaches the lifting body for the first time, the initial height of the lifting body is raised and lowered to the optimal height according to the automatic lifting mode of each lifting body obtained; during the teaching process, the user automatically adjusts the height of the lifting body in real time. The automatic lifting method that is convenient for teaching of the present invention can realize automatic adjustment of a lifting body such as a writing whiteboard, and adds a variety of automatic adjustment modes, which is convenient for users to automatically adjust the lifting body during the teaching process to adapt to more scenarios, and further, can bring a good teaching experience to users and improve the teaching quality.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching equipment, and in particular to an automatic lifting method and an automatic lifting device which are convenient for teaching. Background Art

[0002] With the rapid development of modern science and technology, the growth of information transmission, the transformation of teaching methods, and the production and application of teaching instruments and equipment have also undergone great changes. A large amount of knowledge and information has made modern teaching methods widely valued, and the effective transmission of a large amount of knowledge and information is inseparable from the application of multimedia demonstration technology. The development of multimedia demonstration technology has promoted the revolution of modern education. The future-oriented education reform is also increasingly focused on the in-depth and promotion of modern educational technology. The construction of intelligent and open multimedia demonstration education has become the only way to promote modern educational technology.

[0003] At present, when teachers are giving lectures, it is often seen that teachers feel very tired after teaching because of the different heights of teachers, but the same height of teaching equipment is used. The current multimedia involves a podium and a writing whiteboard, but the existing podium and writing whiteboard cannot be automatically raised and lowered according to the needs of teachers. Especially when teachers are writing on the writing whiteboard, they need to bend down or raise their arms to write on the blackboard, which brings them great inconvenience. This not only affects the teaching quality of teachers, but also affects the physical health of teachers and hinders students' learning. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic lifting method and an automatic lifting device that are convenient for teaching, so as to solve the technical problem that the existing podium and writing whiteboard cannot be automatically lifted and lowered according to the height of the user. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides an automatic lifting method that is easy to teach and is used to automatically lift the height of at least one lifting body, comprising the following steps:

[0007] S100, obtaining the automatic lifting mode of the lifting body;

[0008] S200, when a user approaches the lifting body for the first time, raising or lowering the initial height of the lifting body to an optimal height according to the acquired automatic lifting mode; wherein the optimal height is determined based on the height and / or arm length of the user;

[0009] S300: During the teaching process, the user automatically adjusts the height of the lifting body in real time; when the user is teaching for the first time, the lifting body is at the optimal height.

[0010] Furthermore, setting the automatic lifting mode of the lifting body includes the following steps:

[0011] Select an automatic lifting mode for the lifting body, and sort the priorities of the automatic lifting modes; wherein the automatic lifting modes include a sensing and recognition automatic lifting mode, a document recognition automatic lifting mode, a networking automatic lifting mode, and a human recognition automatic lifting mode; or, lift the lifting body to the optimal height by pressing a button, and prompt the user to save the user information to a user database; the user information includes the user's identity information, height information, arm length information, and the optimal height.

[0012] Further, selecting the sensing and identifying automatic lifting mode to lift the lifting body to the optimal height includes the following steps:

[0013] Acquiring the sensed height and / or arm length of the user; calculating the optimal height according to the sensed height and / or arm length of the user, adjusting the height of the lifting body to the optimal height, and saving the optimal height to the user database;

[0014] Furthermore, selecting the document recognition automatic lifting mode to lift the lifting body to the optimal height includes the following steps:

[0015] Obtain the identity information of the user on the certificate; read the height and / or arm length of the user from the user database according to the obtained identity information of the user; calculate the optimal height according to the read height and / or arm length of the user, adjust the height of the lifting body to the optimal height, and save the optimal height to the user database;

[0016] Further, selecting the networked automatic lifting mode to lift the lifting body to the optimal height includes the following steps:

[0017] Reading user information stored in a server or teaching platform; obtaining the user's identity information from the user information; reading the user's height and / or arm length from the user database according to the obtained user's identity information; calculating the optimal height according to the read height and / or arm length of the user, adjusting the height of the lifting body to the optimal height, and saving the optimal height to the user database;

[0018] Further, selecting the human body recognition automatic lifting mode to lift the lifting body to the optimal height includes the following steps:

[0019] Acquire characteristic information of the user's body recognition, and acquire the identity information of the user according to the recognized characteristic information; read the height and / or arm length of the user from the user database according to the acquired identity information of the user; calculate the optimal height according to the read height and / or arm length of the user, adjust the height of the lifting body to the optimal height, and save the optimal height to the user database.

[0020] Furthermore, the lifting body is lifted to the optimal height by pressing a button, comprising the following steps:

[0021] Receive a key signal from the user; if the key signal received is to rise, raise the height of the lifting body until the key signal received is to stop or the lifting stops when it reaches the highest height; if the key signal received is to descend, lower the height of the lifting body until the key signal received is to stop or the lifting stops when it reaches the lowest height; after stopping rising or descending, prompt the user to save, and after the user inputs the identity information, save the optimal height and lifting control information manually adjusted by the user, and update the user database.

[0022] Furthermore, the lifting body includes at least one writing whiteboard, and step S300 includes the following steps:

[0023] S301, determining the writing area of ​​the writing whiteboard, and obtaining the coordinates of the upper left corner (xmin, ymax) and the lower right corner (xmax, ymin) of the writing area;

[0024] S302, detecting new handwriting written on the writing whiteboard in real time, and obtaining the starting point coordinates (x0, y0) corresponding to the new handwriting;

[0025] S303, acquiring new handwriting on the writing whiteboard in real time, and when the new handwriting is discontinuous, acquiring the coordinates (x1, y1) of the end point of the continuous handwriting;

[0026] S304: Whether the line break constraint condition is satisfied and whether the lifting constraint condition is satisfied; if so, execute step S305; otherwise, return to step S303;

[0027] S305, whether ymax-y1 is greater than a preset threshold; if so, execute step S306; otherwise, execute step S307;

[0028] S306, after all the handwriting is erased, the writing whiteboard is moved down to the initial adjustment height, and the process returns to step S302; or the writing whiteboard is automatically returned to the optimal height, and the process returns to step S302; the initial adjustment height is the height adjusted by the user by pressing a button each time the user uses the writing whiteboard;

[0029] S307, move the writing whiteboard up one line, and return to step S302.

[0030] Furthermore, the lifting body includes a podium and a writing whiteboard, and determining the optimal height includes the following steps:

[0031] Acquire multiple teaching images of the user teaching at the podium and writing on the writing whiteboard respectively; extract the height of the user and the height of the podium corresponding to the user's height from each acquired teaching image, and extract the height and / or arm length of the user, and the height corresponding to the pen tip when the user writes from each acquired teaching image; model the height of the user and the height of the podium, and model the height of the user and / or arm length and the height corresponding to the pen tip when writing respectively, to obtain the functional relationship between the height of the user and the height of the podium, and between the height and / or arm length and the height corresponding to the pen tip when writing.

[0032] According to another aspect of the present invention, there is also provided an automatic lifting device for facilitating teaching, comprising a central control module, a communication module, a storage module and at least one lifting body; the central control module is connected to the lifting body, the communication module and the storage module; the communication module is connected to at least one server or teaching platform; the central control module can obtain the height and / or arm length of the user from the server or the teaching platform through the communication module, store the obtained height and / or arm length of the user in the storage module, and adjust the height of the lifting body to an optimal height according to the height and / or arm length of the user; or, the central control module can obtain the lifting information input by the user from the lifting body, raise or lower the lifting body according to the input lifting information until the user stops inputting, and when the lifting body stops lifting, the lifting height and the user information of the user are saved to the storage module.

[0033] Furthermore, the lifting body includes a liftable module, a fixed module and an electric controller; the liftable module and the fixed module are movably connected via the electric controller; the central control module is connected to the electric controller, and is used to adjust the height of the lifting body to the optimal height via the electric controller according to the height and / or arm length of the user; the liftable module is provided with a plurality of buttons, through which the liftable module can be raised, lowered, stopped and reset.

[0034] Furthermore, the liftable module includes an ID card recognition module; the ID card recognition module is in contact with the ID card or wirelessly senses the ID card, and can read the recorded user information from the ID card, and automatically adjust the height of the liftable module to the optimal height according to the acquired identity information and the height and / or arm length corresponding to the identity information; the central control module is also connected to multiple buttons and ID card recognition modules, and is used to control the lifting and lowering of the electric controller through the user information acquired by the buttons and ID card recognition modules.

[0035] Furthermore, the automatic lifting device that is convenient for teaching also includes a human body sensing module connected to the central control module and used to sense the height and / or arm length of the user; the central control module can obtain the height and / or arm length of the user from the human body sensing module, and automatically adjust the height of the lifting body to the optimal height according to the height and / or arm length of the user; the human body sensing module is at least one pair of ultrasonic transmitters and ultrasonic receivers; or, the human body sensing module is at least one pair of laser transmitters and laser receivers; or, the human body sensing module is at least one infrared detection head; or, the human body sensing module is at least one voiceprint recognition module; or, the human body sensing module is at least one camera.

[0036] Implementing one of the above-mentioned technical solutions of the present invention has the following advantages or beneficial effects: an automatic lifting method convenient for teaching of the present invention can realize automatic adjustment of a lifting body such as a podium or a writing whiteboard, and adds a variety of automatic adjustment modes, which is convenient for users to automatically adjust the lifting body during the teaching process to adapt to more scenarios, thereby bringing users a good teaching experience and improving the teaching quality.

[0037] The automatic lifting device for teaching of the present invention obtains the user's height through a communication module and a server or a teaching platform, or inputs the user's height through a lifting body, thereby adjusting the lifting body to the user's optimal height. Therefore, the device has a high degree of automation and stable lifting, which can bring a good teaching experience to the teaching teacher, thereby improving the teaching quality and having a wide range of market promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. It is obvious that the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0039] Figure 1 is a flow chart of an automatic lifting method that is convenient for teaching according to an embodiment of the present invention;

[0040] Figure 2 is a flow chart of step S300 in an automatic lifting method that is convenient for teaching according to an embodiment of the present invention;

[0041] Figure 3 It is a schematic diagram of a main module of an automatic lifting device that is convenient for teaching according to an embodiment of the present invention;

[0042] Figure 4 It is a complete structural schematic diagram of an automatic lifting device that is convenient for teaching according to an embodiment of the present invention;

[0043] Figure 5 This is a three-dimensional diagram of an automatic lifting device (including a podium and a writing whiteboard) that is convenient for teaching according to an embodiment of the present invention;

[0044] Figure 6 It is a three-dimensional diagram of a lifting body of an embodiment of the present invention, which is a podium;

[0045] Figure 7 This is a structural disassembly diagram of a lifting body of an embodiment of the present invention that is a writing whiteboard.

[0046] In the figure: 1. Central control module; 2. Lifting body; 21. Liftable module; 211. Button; 212. Document recognition module; 213. Display and input module; 22. Fixed module; 23. Electric controller; 3. Communication module; 4. Storage module; 5. Human body sensing module; 6. Touch area. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present invention clearer, the various exemplary embodiments to be described below will refer to the corresponding drawings, which constitute a part of the exemplary embodiments, wherein various exemplary embodiments that may be used to implement the present invention are described. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with the present disclosure. It should be understood that they are only examples of processes, methods, devices, etc. that are consistent with some aspects of the present disclosure as detailed in the attached claims, and other embodiments may also be used, or the embodiments listed herein may be modified in structure and function without departing from the scope and essence of the present invention.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", etc. indicate the orientation or positional relationship based on the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the elements referred to must have a specific orientation, be constructed and operated in a specific orientation. The terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "multiple" means two or more. The terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a communication connection, a direct connection, an indirect connection through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more related listed items. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0049] In order to illustrate the technical solution of the present invention, a specific embodiment is used below for description, and only the parts related to the embodiment of the present invention are shown.

[0050] Embodiment 1:

[0051] like Figure 1 As shown, the present invention provides an automatic lifting method for teaching, which is used to automatically lift the height of at least one lifting body, the lifting body including at least one writing whiteboard and at least one podium; the automatic lifting method includes the following steps:

[0052] S100, obtaining an automatic lifting mode of the lifting body;

[0053] S200, when the user approaches the lifting body for the first time, the initial height of the lifting body is raised or lowered to an optimal height according to the acquired automatic lifting mode; wherein the optimal height is determined based on the height and / or arm length of the user;

[0054] S300, during the teaching process, the user automatically adjusts the height of the lifting body in real time; when the user is teaching for the first time, the lifting body is at the optimal height.

[0055] In order to improve the comfort of users (such as teachers) during teaching and reduce fatigue, the present invention develops an automatic lifting and lowering lifting body to a comfortable height for teachers in multimedia teaching equipment. For example, when a teacher is teaching at a podium, the height of the podium will be automatically adjusted to an optimal height, which is the height corresponding to the podium when the teacher is standing or sitting at the podium (when standing, the podium is near the teacher's abdomen, and the podium desktop can be touched by raising hands naturally); when a teacher is writing on a writing whiteboard, the writing position is just located at the teacher's horizontal line of sight, or within a certain range of sight, so that the teacher does not raise his head or lower his head, or stretch his arms, or squat to write when writing on the writing whiteboard. After setting the automatic lifting mode, when a user approaches a lifting body, such as a podium or a writing whiteboard for the first time, all lifting bodies can automatically adjust to the optimal height for the user to write or stand on the podium on the premise of obtaining the user's arm length and height information, without the need for the user to manually adjust it. Therefore, the present invention realizes the automatic lifting of the podium and the writing whiteboard according to the needs of the teacher, improves the intelligent level of multimedia teaching and the teaching quality of the teacher, and is beneficial to the physical health of the teacher.

[0056] As an optional implementation, setting the automatic lifting mode of the lifting body includes the following steps:

[0057] Select the automatic lifting mode of the lifting body and sort the priority of the automatic lifting mode; wherein the automatic lifting mode includes automatic lifting by sensing recognition, automatic lifting by document recognition, automatic lifting by networking and automatic lifting by human body recognition; or, lift the lifting body to the optimal height by pressing a button, and prompt the user to save the information to the user database. User information includes the user's identity information (such as teacher's name, number, gender, etc.), height information, arm length information and optimal height. The setting of the present invention can be selected through a variety of automatic lifting modes provided by the system, or after sorting the priorities of multiple modes, the system will start the automatic lifting mode in the front according to the priority. Of course, the present invention also provides a mode set based on a button (which can be located on the lifting body). After the user sets it through the button, the lifting body height, user height and user identity information (such as name, teacher number, etc.) are saved. After saving, the next time the user uses the lifting body, the present invention can automatically start the lifting body through the priority of the above-mentioned automatic lifting mode.

[0058] As an optional implementation, selecting the sensing recognition automatic lifting mode to lift the lifting body to an optimal height includes the following steps:

[0059] Acquire the height and / or arm length of the user through sensing (such as infrared sensing, laser sensing, ultrasonic sensing, etc.); calculate the optimal height according to the sensed height and / or arm length of the user; adjust the height of the lifting body to the optimal height, and save the optimal height to the user database.

[0060] As an optional implementation, selecting the document recognition automatic lifting mode to lift the lifting body to an optimal height includes the following steps:

[0061] Obtain the user's identity information on the certificate; read the user's height and / or arm length from the user database based on the obtained user's identity information; calculate the optimal height based on the read height and / or arm length of the user, adjust the height of the lifting body to the optimal height, and save the optimal height to the user database.

[0062] As an optional implementation, selecting the networked automatic lifting mode to lift the lifting body to an optimal height includes the following steps:

[0063] Read the user information stored in the server or teaching platform or locally (such as information stored in the automatic lifting device); obtain the user's identity information from the user information; read the user's height and / or arm length from the user database based on the obtained user's identity information; calculate the optimal height based on the read height and / or arm length of the user, adjust the height of the lifting body to the optimal height, and save the optimal height to the user database.

[0064] As an optional implementation, selecting the human body recognition automatic lifting mode to lift the lifting body to an optimal height includes the following steps:

[0065] Acquire characteristic information of the user's body recognition (such as facial or fingerprint images taken by a camera, or voice, etc. to identify the user's identity), and acquire the user's identity information based on the recognized characteristic information; read the user's height and / or arm length from the user database based on the acquired user identity information; calculate the optimal height based on the read height and / or arm length of the user, adjust the height of the lifting body to the optimal height, and save the optimal height to the user database.

[0066] As an optional implementation, the lifting body is lifted to an optimal height by pressing a button, including the following steps:

[0067] Receive the user's key signal; if the received key signal is to rise, raise the height of the lifting body until the key signal received is to stop or the lifting stops when it reaches the highest height; if the received key signal is to descend, lower the height of the lifting body until the key signal received is to stop or the lifting stops when it reaches the lowest height; after stopping rising or descending, prompt the user to save, and after the user enters the user identity information, save the optimal height information and lifting control information manually adjusted by the user, and update the user database.

[0068] like Figure 2 As shown, as an optional implementation, the lifting body includes at least one writing whiteboard, and step S300 includes the following steps:

[0069] S301, determine the writing area of ​​the writing whiteboard, and obtain the coordinates of the upper left corner (xmin, ymax) and the lower right corner (xmax, ymin) of the writing area;

[0070] S302, detecting new handwriting written on the writing whiteboard in real time, and obtaining the starting point coordinates (x0, y0) corresponding to the new handwriting;

[0071] S303, obtaining new handwriting on the writing whiteboard in real time, and when the new handwriting is discontinuous, obtaining the coordinates (x1, y1) of the end point of the continuous handwriting;

[0072] S304: Whether the line break constraint condition is satisfied and whether the lifting constraint condition is satisfied; if so, execute step S305; otherwise, return to step S303;

[0073] In this embodiment, the line break constraint condition may be a certain ratio (such as 2 / 3) of x1-x0 being greater than xmax-xmin (the length of a line on the writing whiteboard); the lifting and lowering constraint condition is that the user does not continue to write continuous handwriting after discontinuous handwriting within a certain period of time, or the lifting and lowering constraint condition may also be a certain ratio (specifically determined according to the height of the writing whiteboard) of ymax-ymin (the total height of the writing whiteboard), or the lifting and lowering constraint condition may also be that the teacher writes one or more lines (x1-x0 is greater than a certain ratio of xmax-xmin, that is, one line) and then automatically lifts and lowers;

[0074] S305, whether ymax-y1 is greater than a preset threshold; if so, execute step S306; otherwise, execute step S307. It should be noted that whether ymax-y1 is greater than the preset threshold indicates that the writing has approached the bottom of the writing whiteboard;

[0075] S306: After all the handwriting is erased, the writing whiteboard is moved down to the initial adjustment height, and the process returns to step S302; or, after all the handwriting is erased, the writing whiteboard is automatically returned to the optimal height, and the process returns to step S302. The initial adjustment height is the height that the user adjusts by pressing a button each time the writing whiteboard is used;

[0076] S307, move the writing whiteboard up one line, and return to step S302.

[0077] In this embodiment, the steps for determining a row distance are as follows:

[0078] Record the starting point coordinates (x0, y0) and the ending point coordinates (x1, y1) of each continuous note in each line, and calculate each y0-y1 value, and take the maximum value of all calculated y0-y1, which is the line distance. Of course, the line distance can also be set to achieve. It should be noted that in step S307 of this embodiment, the writing board can also be moved up multiple lines, not just one line distance.

[0079] It should be noted that in the teaching process, users often need to write teaching content on the blackboard. Therefore, generally only the writing whiteboard is automatically adjusted in real time, and the podium is generally adjusted once for the initial adjustment. The exception is that when the user leaves the podium and is replaced by a new user (such as temporarily demonstrating at the student podium) to teach at the podium, the podium is readjusted (refer to step S200), and the writing whiteboard can also be adjusted in time (refer to step S200). When there are multiple people in front of the podium or writing whiteboard, automatic adjustment is generally not performed, the optimal height is maintained, or it is manually adjusted by the user. It should also be noted that since step S300 is mainly for the real-time lifting and lowering of the writing whiteboard when writing, a control module different from the central control module (described in Example 2) can be set up separately, such as a writing whiteboard position adjustment module to achieve it. Of course, it can also be achieved in the central control module, depending on the actual situation.

[0080] As a feasible implementation method, the lifting body also includes a podium and a writing whiteboard, and determining the optimal height includes the following steps:

[0081] Images of multiple users teaching at a podium and writing on a whiteboard are obtained respectively; the height of the user and the height of the podium corresponding to the user's height are extracted from each obtained teaching image, and the height of the user and / or arm length, and the height corresponding to the pen tip when the user writes are extracted from each obtained teaching image; the user's height and the podium height are modeled, and the height of the user's height and / or arm length and the height corresponding to the pen tip when writing are modeled respectively, and the functional relationship between the user's height and the podium height, and the height / or arm length and the height corresponding to the pen tip when writing is obtained. This step can be modeled by a neural network or by a multivariate regression model. After obtaining the functional relationship between the height and the podium height, and the height / or arm length and the height corresponding to the pen tip when writing, the optimal height of the podium corresponding to the user's height and the optimal writing height of the writing whiteboard corresponding to the user's height / or arm length can be calculated according to the specific user's height through the functional relationship, that is, the calculated optimal height as described above.

[0082] In summary, this method can realize automatic adjustment of a lifting body such as a podium or a writing whiteboard, and adds a variety of automatic adjustment modes, which is convenient for users to automatically adjust the lifting body during the teaching process and adapt to more scenarios, thereby providing users with a good teaching experience and improving the teaching quality. Therefore, this method realizes the automatic lifting of the podium and the writing whiteboard according to the needs of teachers, improves the teaching quality of teachers, and is beneficial to the physical health of teachers.

[0083] Embodiment 2:

[0084] like Figure 3-Figure 5 As shown, the present invention also provides an embodiment of an automatic lifting device for teaching, which uses an automatic lifting method for teaching described in the above embodiment 1 to automatically lift the height of multiple lifting bodies, including a central control module 1, a communication module 3, a storage module 4 and at least one lifting body 2. Specifically, the central control module 1 is connected to the lifting body 2, the communication module 3, and the storage module 4, and the communication module 3 is connected to at least one server or teaching platform. The central control module 1 can obtain the height and / or arm length of the user from the server or teaching platform through the communication module 3, store the obtained height and / or arm length of the user in the storage module 4, and adjust the height of the lifting body 2 to the optimal height according to the height and / or arm length of the user; or, the central control module 1 can obtain the lifting information input by the user from the lifting body 2, and raise or lower the lifting body 2 according to the input information until the user stops inputting, and when the lifting body 2 stops lifting, the lifting height and the identity information of the user are saved to the storage module 4. In the present invention, the lifting body 2 includes but is not limited to a podium, a desk, a bench, and a writing whiteboard. During the teaching process, in order to facilitate teaching for teachers of different heights, the height of the lifting body 2 is automatically adjusted to the height that is most comfortable for the user to teach, that is, the optimal height (obtained through Example 1) through the relevant algorithm of the present invention.

[0085] like Figure 6As shown, as an optional embodiment, the lifting body 2 includes a liftable module 21, a fixed module 22 and an electric controller 23. Specifically, the liftable module 21 and the fixed module 22 are movably connected through the electric controller 23. For example, a feasible embodiment is: the electric controller 23 is preferably an electric cylinder, a lifter, the fixed part of the electric controller 23 is fixedly connected to the fixed module 22, and its movable part is fixedly connected to the liftable module 21, thereby realizing the lifting of the liftable module 21. The liftable module 21 is provided with a plurality of buttons 211, and the liftable module 21 can be raised, lowered, stopped and reset by the buttons 211. Further, the liftable module 21 is also provided with an ID recognition module 212, which contacts or wirelessly senses the ID, can read and record the user's identity information from the ID, and then obtain the height and / or arm length information according to the identity information, and automatically adjust the height of the liftable module 21 according to the obtained height and / or arm length. As an optional implementation, the automatic lifting device for teaching in this implementation also includes a human body sensing module 5 connected to the central control module 1 for sensing the height and / or arm length of the user. The central control module 1 can obtain the height and / or arm length of the user from the human body sensing module 5, and automatically adjust the height of the lifting body to the optimal height according to the height and / or arm length of the user. Furthermore, the human body sensing module 5 is at least one pair of ultrasonic transmitters and ultrasonic receivers; or, at least one pair of laser transmitters and laser receivers; or, at least one infrared detection head; or, at least one camera; or, at least one voiceprint recognition module. The central control module 1 is connected to the human body sensing module 5 and the electric controller 23, and is used to obtain the height and / or arm length of the user from the human body sensing module 5, store the obtained height and / or arm length of the user in the storage module 4, and adjust the height of the lifting body 2 to the optimal height through the electric controller 23 according to the height and / or arm length of the user; in addition, the central control module 1 is also connected to multiple buttons 211 and the document recognition module 212, and is used to control the lifting and lowering of the electric controller 23 through the information obtained by the buttons 211 and the document recognition module 212, thereby achieving the purpose of adjusting the height of the lifting body 2. At the same time, the central control module 1 can download courseware and timetables from the server or teaching platform through the communication module 3, and store them in the storage module 4. In order to realize teaching display and input user identity information, the lifting module 21 is also provided with a display and input module 213 connected to the central control module 1.

[0086] like Figure 6As shown, as an optional embodiment, the present invention provides an embodiment in which the lifting body 2 is a podium. The upper part of the podium is a liftable module 21, the lower part in contact with the ground is a fixed module 22, and the middle part is an electric controller 23. A plurality of buttons 211, a certificate recognition module 212, and a display and input module 213 are arranged on the upper part of the podium. The upper liftable module of the podium can be automatically or manually lifted and lowered by the buttons and certificate recognition module on the table, so as to facilitate teaching, and enable the user to adjust the upper liftable module of the podium to the optimal height for the user during the teaching process, making teaching easier and more convenient.

[0087] like Figure 7 As shown, as an optional embodiment, the present invention provides an embodiment in which the lifting body 2 is a writing whiteboard. Among them, the board body on which the user writes is a liftable module 21, and the two brackets for fixing the board body are fixed modules 22, and an electric controller 23 is arranged between the board body and the fixed. A touch area 6 is also arranged on the board body on which the user writes, and the area includes a button 211 and a certificate recognition module 212. The buttons for rising, falling, stopping the lifting and resetting operation can be popped up by touching. The user only needs to click to realize the lifting, stopping and resetting of the writing board body. When the certificate is recognized, the certificate information can be sensed by simply bringing the certificate close to the touch area 6. In addition, the area outside the touch area 6 is a display and input module 213. Through the above settings, the user can easily and quickly adjust the writing board body to the user's optimal writing height during the teaching process, making writing easier and more comfortable.

[0088] In summary, the automatic lifting device for teaching in this embodiment is provided with a human body sensing module, and the lifting body obtains the height and / or arm length information of the teaching teacher from the human body sensing module, and automatically adjusts the height of the lifting body to the optimal teaching height of the teaching teacher, or automatically adjusts the height of the writing board to the optimal writing height of the teaching teacher through the relevant algorithm of the present invention. Therefore, the device has a high degree of automation and stable lifting, which can bring a good teaching experience to the teaching teacher, improve the teaching quality, and has a wide range of market promotion value.

[0089] The above description is only the preferred embodiment of the present invention. It is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the protection scope of the present invention.

Claims

1. An automatic lifting method convenient for teaching, characterized in that: The method is used to automatically raise or lower the height of at least one lifting body, comprising the following steps: S100, obtaining the automatic lifting mode of the lifting body; S200, when a user approaches the lifting body for the first time, raising or lowering the initial height of the lifting body to an optimal height according to the acquired automatic lifting mode; wherein the optimal height is determined based on the height and / or arm length of the user; S300, the user automatically adjusts the height of the lifting body in real time during the teaching process; when the user is teaching for the first time, the lifting body is at the optimal height; The lifting body includes at least one writing whiteboard, and step S300 includes the following steps: S301, determining the writing area of ​​the writing whiteboard, and obtaining the coordinates of the upper left corner (xmin, ymax) and the lower right corner (xmax, ymin) of the writing area; S302, detecting new handwriting written on the writing whiteboard in real time, and obtaining the starting point coordinates (x0, y0) corresponding to the new handwriting; S303, acquiring new handwriting on the writing whiteboard in real time, and when the new handwriting is discontinuous, acquiring the coordinates (x1, y1) of the end point of the continuous handwriting; S304: Whether the line break constraint condition is satisfied and whether the lifting constraint condition is satisfied; if yes, execute step S305; otherwise, return to step S303; the line break constraint condition is that x1-x0 is greater than a certain ratio of xmax-xmin; the lifting constraint condition is that the user does not continue to write continuous handwriting after discontinuous handwriting within a certain period of time, or the lifting constraint condition is a certain ratio of ymax-ymin; S305, whether ymax-y1 is greater than a preset threshold; if so, execute step S306; otherwise, execute step S307; S306, after all the handwriting is erased, the writing whiteboard is moved down to the initial adjustment height, and the process returns to step S302; or the writing whiteboard is automatically returned to the optimal height, and the process returns to step S302; the initial adjustment height is the height adjusted by the user by pressing a button each time the user uses the writing whiteboard; S307, moving the writing whiteboard up one line, and returning to step S302; The lifting body includes a podium and a writing whiteboard, and determining the optimal height includes the following steps: Acquire multiple teaching images of the user teaching at the podium and writing on the writing whiteboard respectively; extract the height of the user and the height of the podium corresponding to the user's height from each acquired teaching image, and extract the height and / or arm length of the user, and the height corresponding to the pen tip when the user writes from each acquired teaching image; model the height of the user and the height of the podium, and model the height of the user and / or arm length and the height corresponding to the pen tip when writing respectively, to obtain the functional relationship between the height of the user and the height of the podium, and between the height and / or arm length and the height corresponding to the pen tip when writing.

2. The automatic lifting method for teaching according to claim 1 is characterized in that: Setting the automatic lifting mode of the lifting body comprises the following steps: Selecting the automatic lifting mode of the lifting body and sorting the priorities of the automatic lifting modes; wherein the automatic lifting modes include a sensing recognition automatic lifting mode, a document recognition automatic lifting mode, a networking automatic lifting mode and a human body recognition automatic lifting mode; Or, the lifting body is lifted to the optimal height by pressing a button, and the user is prompted to save the user information to a user database; the user information includes the user's identity information, height information, arm length information and the optimal height.

3. The automatic lifting method for teaching according to claim 2 is characterized in that: Selecting the sensing recognition automatic lifting mode to lift the lifting body to the optimal height includes the following steps: Acquiring the sensed height and / or arm length of the user; calculating the optimal height according to the sensed height and / or arm length of the user, adjusting the height of the lifting body to the optimal height, and saving the optimal height to the user database; Selecting the document recognition automatic lifting mode to lift the lifting body to the optimal height includes the following steps: Obtain the identity information of the user on the certificate; read the height and / or arm length of the user from the user database according to the obtained identity information of the user; calculate the optimal height according to the read height and / or arm length of the user, adjust the height of the lifting body to the optimal height, and save the optimal height to the user database; Selecting the networked automatic lifting mode to lift the lifting body to the optimal height includes the following steps: Reading user information stored in a server or teaching platform; obtaining the user's identity information from the user information; reading the user's height and / or arm length from the user database according to the obtained user's identity information; calculating the optimal height according to the read height and / or arm length of the user, adjusting the height of the lifting body to the optimal height, and saving the optimal height to the user database; Selecting the human body recognition automatic lifting mode to lift the lifting body to the optimal height includes the following steps: Acquire characteristic information of the user's body recognition, and acquire the identity information of the user according to the recognized characteristic information; read the height and / or arm length of the user from the user database according to the acquired identity information of the user; calculate the optimal height according to the read height and / or arm length of the user, adjust the height of the lifting body to the optimal height, and save the optimal height to the user database.

4. The automatic lifting method for teaching according to claim 2 is characterized in that: Lifting the lifting body to the optimal height by pressing a button includes the following steps: Receiving a key signal from the user; If the received key signal is to rise, the height of the lifting body is raised until the received key signal is to stop or the lifting body stops rising when it reaches the highest height; if the received key signal is to descend, the height of the lifting body is lowered until the received key signal is to stop or the lifting body stops descending when it reaches the lowest height; After stopping the ascent or descent, the user is prompted to save the information. After the user inputs the identity information, the optimal height and lifting control information manually adjusted by the user are saved, and the user database is updated.

5. An automatic lifting device convenient for teaching, characterized in that: The automatic lifting method for teaching according to any one of claims 1 to 4 is used to automatically lift the height of at least one lifting body, comprising a central control module, a communication module, a storage module and at least one lifting body; The central control module is connected to the lifting body, the communication module, and the storage module; the communication module is connected to at least one server or teaching platform; The central control module can obtain the height and / or arm length of the user from the server or the teaching platform through the communication module, store the obtained height and / or arm length of the user in the storage module, and adjust the height of the lifting body to an optimal height according to the height and / or arm length of the user; Alternatively, the central control module can obtain the lifting information input by the user from the lifting body, and raise or lower the lifting body according to the input lifting information until the user stops inputting. When the lifting body stops lifting, the lifting height and the user information of the user are saved to the storage module.

6. The automatic lifting device for teaching purposes according to claim 5, characterized in that: The lifting body includes a lifting module, a fixing module and an electric controller; The liftable module and the fixed module are movably connected via the electric controller; the central control module is connected to the electric controller and is used to adjust the height of the lift body to the optimal height via the electric controller according to the height and / or arm length of the user; The liftable module is provided with a plurality of buttons, through which the liftable module can be raised, lowered, stopped and reset.

7. The automatic lifting device for teaching purposes according to claim 6, characterized in that: The liftable module includes an ID card recognition module; the ID card recognition module is in contact with the ID card or wirelessly senses the ID card, and can read the recorded user information from the ID card, and automatically adjust the height of the liftable module to the optimal height according to the acquired identity information and the height and / or arm length corresponding to the identity information; The central control module is also connected to the plurality of buttons and certificate recognition modules, and is used to control the lifting and lowering of the electric controller through the user information obtained by the buttons and certificate recognition modules.

8. The automatic lifting device for teaching purposes according to claim 5, characterized in that: It also includes a human body sensing module connected to the central control module and used to sense the height and / or arm length of the user; the central control module can obtain the height and / or arm length of the user from the human body sensing module, and automatically adjust the height of the lifting body to the optimal height according to the height and / or arm length of the user; The human body sensing module is at least a pair of ultrasonic transmitter and ultrasonic receiver; Or, the human body sensing module is at least a pair of laser transmitter and laser receiver; Or, the human body sensing module is at least one infrared detection head; Or, the human body sensing module is at least one voiceprint recognition module; Alternatively, the human body sensing module is at least one camera.

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