CN113552976B - Control system and method of electromagnetic touch display device - Google Patents
Control system and method of electromagnetic touch display device Download PDFInfo
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- CN113552976B CN113552976B CN202110877204.3A CN202110877204A CN113552976B CN 113552976 B CN113552976 B CN 113552976B CN 202110877204 A CN202110877204 A CN 202110877204A CN 113552976 B CN113552976 B CN 113552976B
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- 238000001514 detection method Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
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Abstract
The application relates to a control system and a control method of an electromagnetic touch display device, wherein the control system comprises the following steps: acquiring a screen capturing signal; acquiring a handwriting image currently displayed by the display screen module according to the screen capturing signal; transmitting the handwriting image to a storage module; and sending a restoration signal to the display screen module, wherein the display screen module restores the initial image according to the restoration signal. The writing brush copybook has the effect of improving convenience when a user needs to call the writing brush copybook for earlier stage exercise in later stage.
Description
Technical Field
The present disclosure relates to the field of intelligent manufacturing, and in particular, to a control system and method for an electromagnetic touch display device.
Background
At present, the existing electromagnetic touch display device mainly has two implementation modes: one is to add an electromagnetic induction antenna behind a display screen of a display screen device with touch control or a backlight source of the display screen; another is to add an electromagnetic induction antenna array in the antenna array of the touch sensor.
The common display screen touch devices in the market are generally divided into resistive touch, capacitive touch and electromagnetic pen touch; resistive touch is obsolete in many fields because of poor stability, sensitivity and operation experience; the capacitive touch has high sensitivity, convenient operation and good hand touch experience, but the pen touch speed and resolution are low; the electromagnetic pen has extremely high pen touch speed and resolution, and has a real original handwriting writing function.
Aiming at the related technology, the inventor believes that, due to the limited interface size of the display screen, when a user needs to use the display touch device to practice the writing brush copybook, the user needs to clear the existing content on the current display screen before performing new writing brush copybook practice; the portion of the brush copybook which is practiced by the user cannot be stored, so that convenience is reduced when the user needs to fetch the brush copybook practiced in the earlier stage in the later stage.
Disclosure of Invention
In order to improve convenience when a user needs to call a writing brush copybook for early-stage exercise in the later stage, the application provides a control system and a control method of an electromagnetic touch display device.
In a first aspect, the present application provides a control method of an electromagnetic touch display device, which adopts the following technical scheme:
a control method of an electromagnetic touch display device comprises the following steps:
acquiring a screen capturing signal;
acquiring a handwriting image currently displayed by the display screen module according to the screen capturing signal;
transmitting the handwriting image to a storage module;
and sending a restoration signal to the display screen module, wherein the display screen module restores the initial image according to the restoration signal.
Through the technical scheme, when a user needs to switch a brand-new display area of the display screen module, the handwriting image screenshot of the practice completed by the current user can be stored in the storage module, and then the handwriting image in the current display area is cleared and then restored to the initial image state without the practice trace, so that the user can continue to use the display screen module to practice copybooks of writing brush words, and meanwhile, the user can call out the handwriting image in the storage module for the user to use.
Optionally, the step of sending the handwriting image to the storage module includes the following steps:
acquiring an initial image of a display screen module;
comparing the handwriting image with the initial image;
if the handwriting image is the same as the initial image, repeating the step of acquiring the screen capturing signal; if the handwriting image and the initial image are different, the step of sending the handwriting image to the storage module is executed.
By adopting the technical scheme, the invalid image is intercepted and stored in the storage module after the user mistakenly touches the screen capturing signal, so that the invalid image in the storage module is reduced.
Optionally, before the step of acquiring the handwriting image currently displayed by the display screen module according to the screen capturing signal, the method further includes the following steps:
presetting the timing time length of a timing module;
starting timing according to the screen capturing signal;
judging whether an error touch signal is received or not;
if the false touch signal is received before timing is completed, repeating the step of acquiring the screen capturing signal; and if the false touch signal is not received before timing is completed, executing the step of acquiring the handwriting image currently displayed by the display screen module according to the screen capturing signal.
By adopting the technical scheme, the screen capturing signal sent by the user due to false touch is reduced by setting the time delay, so that invalid screen capturing actions are reduced.
Optionally, the step of sending the recovery signal to the display screen module further includes the following steps:
acquiring a reading signal;
and acquiring the handwriting image in the storage module according to the reading signal and forwarding the handwriting image to the display screen module for display.
By adopting the technical scheme, the handwriting images stored in the storage module are called out for viewing by a user.
Optionally, the step of acquiring the handwriting image in the storage module according to the read signal and forwarding the handwriting image to the display screen module for display specifically includes the following steps:
acquiring the number N of handwriting images in a storage module;
if N >1; and arranging the N handwriting images in a display area of the display screen module according to a preset standard.
By adopting the technical scheme, a plurality of handwriting images are conveniently arranged according to the preset standard and then displayed, so that the comfort level of a user when looking up the handwriting images in the storage module is improved.
In a second aspect, the present application provides a control system of an electromagnetic touch display device, which adopts the following technical scheme:
the control system of the electromagnetic touch display device comprises an electromagnetic touch sensing module and the display screen module according to claim 1, wherein the display screen module is arranged on one side of the electromagnetic touch sensing module, the electromagnetic touch sensing module is in communication connection with a processing module, the processing module is in communication connection with a storage module and a triggering module, and the triggering module is arranged above the display screen module.
By adopting the technical scheme, the electromagnetic touch sensing module and the display screen module are combined to restore original handwriting left by the writing brush according to specific writing brush touch; the triggering module is arranged on the display screen module, so that the triggering module is convenient for a user to trigger when the user needs to switch a brand new display area of the display screen module; when the trigger module is triggered by a user, the trigger module sends a screen capturing signal to the processing module, the processing module stores the handwriting image screenshot of the exercise completed by the current user into the storage module according to the screen capturing signal, and then the handwriting image in the current display area is cleared and then restored to an initial image state without exercise traces.
Optionally, the electromagnetic touch sensing module is detachably connected with the transparent cover plate on one side far away from the display screen module.
Through adopting above-mentioned technical scheme, set up transparent cover and cover electromagnetic touch sensing module, avoid electromagnetic touch sensing module directly exposing, can avoid outside sharp-pointed article fish tail electromagnetic touch sensing module to improve electromagnetic touch sensing module's service life.
Optionally, the triggering module comprises a conducting pipe and a triggering piece which is connected with the processing module in a communication way; the conducting pipe is embedded in one side of the transparent cover plate, which is far away from the display screen module; the guide pipe is provided with a pressing part and a triggering part; the trigger piece is positioned at one side of the conducting tube, which is close to the trigger part; the trigger part is provided with a dormant position, a reading position and a trigger position relative to the trigger piece, the trigger part can reciprocate among the dormant position, the reading position and the trigger position, and the conduction pipe is filled with a conduction medium; the conduction medium can reciprocate between the trigger part and the pressing part in the conduction pipe; when the trigger part is positioned at the trigger position, the trigger part sends a screen capturing signal to the processing module; when the trigger part is positioned at the reading position, the trigger part sends a reading signal to the processing module.
By adopting the technical scheme, in the initial state, the trigger part is positioned at the dormant position, the conducting medium is filled in the conducting tube, the conducting tube comprises the pressing part and the trigger part, and the trigger part does not send any signal to the processing module; when a user needs to switch a brand new display area of the display screen module, the user can cause the conductive medium in the pressing part to move in the direction of the trigger part in the conducting pipe by abutting against the pressing part, so that the position of the conducting pipe close to the trigger part is forced to deform, and the trigger part is caused to move from a dormant position to a reading position or a trigger position, namely, the trigger part is forced to send a reading signal or a screen capturing signal to the processing module, and the trigger part is determined according to the deformation quantity of the position of the conducting pipe close to the trigger part; thereby enabling the transmission of the read signal and the screen capture signal.
Optionally, the trigger module further includes a detecting element disposed in the pressing portion, the pressing portion has a false touch position and a normal position relative to the detecting element, the pressing portion can reciprocate between the false touch position and the normal position, the pressing portion is located the false touch position, and when the trigger element is located the trigger position, the detecting element sends a false touch signal to the processing module.
By adopting the technical scheme, the probability of false touch of the trigger module is reduced in order to avoid deformation of the position of the guide pipe close to the trigger part caused by direct pressing of the trigger part by an external object; when the trigger module is triggered normally, the trigger part is required to be positioned at the trigger position and the pressing position is required to be positioned at the normal position; if the processing module receives the false touch signal while receiving the screen capturing signal, the processing module judges that the current screen capturing signal is invalid, so that invalid screen capturing actions of the processing module are reduced.
Optionally, identification particles are arranged in the conductive medium, and the outer wall of each identification particle is provided with a bright color layer; when the pressing part is in the false touch position, the marking particles are positioned in the pressing part; when the pressing portion is located at the normal position, the marking particles can move in a direction approaching the trigger portion.
Through adopting above-mentioned technical scheme, the user of being convenient for when switching the brand-new display area of display screen module, the user can find the place region of pressing part fast according to the bright color layer of sign granule to improve the convenience that the user used trigger module.
In summary, the present application includes at least one of the following beneficial technical effects:
storing the handwriting image screenshot of the current user which has completed practice into a storage module, and then clearing the handwriting image in the current display area and then restoring to an initial image state without practice traces so as to facilitate the user to continue to use the display screen module to practice copybooks of the Chinese calligraphy;
when the trigger module is triggered by a user, the trigger module sends a screen capturing signal to the processing module, the processing module stores the handwriting image screenshot of the exercise completed by the current user into the storage module according to the screen capturing signal, and then the handwriting image in the current display area is cleared and then restored to an initial image state without exercise traces;
if the processing module receives the false touch signal while receiving the screen capturing signal, the processing module judges that the current screen capturing signal is invalid, so that invalid screen capturing actions of the processing module are reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an electromagnetic touch display device in the present application;
FIG. 2 is a control schematic block diagram of a control system of an electromagnetic touch display device in the present application;
FIG. 3 is a cross-sectional view taken along line F-F in FIG. 1;
FIG. 4 is a schematic view of the overall structure of the inside of the conduit when the trigger module is in a normal state;
FIG. 5 is a schematic view of the overall structure of the conduit when the trigger part is in the screen capturing position;
FIG. 6 is a schematic diagram of the overall structure of the conduit when the trigger part is in a false touch state;
FIG. 7 is a schematic view of the overall structure of the conduit when the trigger part is in the reading position;
fig. 8 is a flowchart of a control method of the electromagnetic touch display device.
Reference numerals illustrate: 1. an electromagnetic touch sensing module; 2. a display screen module; 3. a processing module; 4. a storage module; 5. a triggering module; 51. a conduit; 511. a pressing part; 512. a trigger part; 52. a trigger; 53. a detecting member; 54. identifying the particles; 6. a transparent cover plate; 7. a housing; 71. an inner step surface; 72. an extension groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to fig. 1 to 8 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The embodiment of the application discloses a control system of an electromagnetic touch display device.
Referring to fig. 1 and 2, a control system of an electromagnetic touch display device includes an electromagnetic touch sensing module 1, a display screen module 2, a processing module 3, a storage module 4, a triggering module 5, a transparent cover plate 6 and a housing 7; wherein the shell 7 can be a rectangular shell 7 made of any one of plastic, silica gel, metal, wood and the like; an inner step surface 71 is arranged on the inner side of the top of the outer edge side of the shell 7; the display screen module 2, the electromagnetic touch sensing module 1 and the transparent cover plate 6 are sequentially adhered to the inner step surface 71 of the shell 7 from bottom to top. The transparent cover plate 6 may employ a gel film.
Referring to fig. 2 and 3, the trigger module 5 is embedded and mounted on one side, far away from the electromagnetic touch sensing module 1, of the transparent cover plate 6, a signal end of the electromagnetic touch sensing module 1 is in communication connection with a first signal end of the processing module 3, a second signal end of the processing module 3 is respectively in communication connection with signal ends of the storage module 4 and the trigger module 5, and a third signal end of the processing module 3 is in communication connection with a signal end of the display screen module 2; one side of the display screen module 2 facing the electromagnetic touch sensing module 1 is a display area capable of displaying Chinese brush character traces, and the electromagnetic touch sensing module 1 is arranged in a transparent mode.
Referring to fig. 2 and 4, the trigger module 5 includes a conduit 51, a trigger 52, a detection 53 and an identification particle 54; the conducting tube 51 is transparent, the length direction of the conducting tube 51 may be parallel to the length direction of the housing 7 or may be perpendicular to the length direction of the housing 7, and two ends of the conducting tube 51 are respectively provided with a pressing portion 511 and a triggering portion 512.
In this embodiment, the pressing portion 511 is located outside the display area and is relatively obviously deformed on a side far away from the electromagnetic touch sensing module 1, the triggering portion 512 is located outside the display area and is relatively obviously deformed on a side facing the electromagnetic touch sensing module 1, and the pipe section of the conducting pipe 51 is located right above the display area; in this embodiment, the trigger portion 512 and the pressing portion 511 are both elastic films; an extension groove 72 into which the elastic film on the triggering part 512 can be buckled is formed on the inner step surface 71 of the shell 7, and the axis of the extension groove 72 is perpendicular to the lower surface of the transparent cover plate 6.
Referring to fig. 4 and 5, the trigger 52 is mounted inside the housing 7 and below one side of the trigger portion 512 of the conduit 51, and the detection member 53 is disposed inside the conduit 51 and inside the pressing portion 511; the inside of the conduction pipe 51 is filled with a liquid conduction medium; the marking particles 54 may be one or more, and the outer edge side thereof is covered with a bright color layer, which may be made of any paint with vivid color; the marking particles 54 are adhered with elastic bands, and one end of each elastic band, which is far away from the marking particles 54, is connected to the inner wall of the bottom of the pressing part 511; the marking particles 54 can move in a direction toward or away from the trigger portion 512.
The triggering piece 52 in this embodiment includes a controller, a first infrared proximity sensor and a second infrared proximity sensor, where the controller is respectively connected with the first infrared proximity sensor and the second infrared proximity sensor in a communication manner, and the first infrared proximity sensor and the second infrared proximity sensor are co-linearly distributed along the extending direction of the axis of the extending groove 72; the controller is in communication connection with the processing module 3; in another embodiment, the first infrared proximity sensor and the second infrared proximity sensor may be replaced by other micro sensors having the function of detecting the deformation of the trigger portion 512.
Referring to fig. 4, 6 and 7, the trigger part 512 has a sleep bit, a trigger bit and a read bit with respect to the trigger piece 52, which are sequentially distributed along the axial direction of the extension groove 72; when the conductive medium in the conductive tube 51 is moved toward the end near the trigger portion 512, the trigger portion 512 is forced to reciprocate between the sleep position, the trigger position and the read position after expanding.
The detecting member 53 is an ultrasonic ranging sensor in the present embodiment; an ultrasonic ranging sensor is installed inside the conductive pipe 51 for detecting a distance between the inner wall of the pressing part 511 and the inner wall of the conductive pipe 51; wherein the pressing portion 511 has a false touch position, a normal position, and a pressing position with respect to the detecting piece 53, the pressing portion 511 being capable of reciprocating between the false touch position, the normal position, and the pressing position; the distance between the inner wall of the preset pressing portion 511 and the inner wall of the conducting tube 51 is L, and in another embodiment, the detecting member 53 may be any micro sensor for detecting deformation of the pressing portion 511.
The embodiment of the application also discloses a control method of the electromagnetic touch display device.
Referring to fig. 1 to 8, the control method of the electromagnetic touch display device includes the steps of:
in an initial state, after the electromagnetic touch display device is started to operate, the display area is in a blank initial image without copybook marks; the storage module 4 stores an initial image in advance;
in this embodiment, a user uses a specified writing brush to trigger a display area of an electromagnetic touch display device, and the electromagnetic touch display device restores writing marks according to moving marks of the writing brush and displays corresponding handwriting images in the display area; if no space exists in the current display area, the user can continue to practice writing of the Chinese brush character, and if the user needs to switch the display area to continue to practice writing of the Chinese brush character, the step A100 can be executed.
A100: acquiring a screen capturing signal;
in this embodiment, the user can press the pressing portion 511 by a finger or other external object, and slide on the transparent cover plate 6 from the pressing portion 511 to the triggering portion 512; thereby forcing the conductive medium in the conduit 51 to move in a direction approaching the trigger portion 512, and thus forcing the trigger portion 512 to expand toward the inside of the extension groove 72.
When the internal conductive medium is pushed to the center point of the pipe section of the conductive pipe 51 along the length direction of the conductive pipe 51, the triggering part 512 can expand to trigger the first infrared proximity sensor, the triggering part 512 moves to the triggering position in the extending groove 72, and the controller sends a screen capturing signal to the processing module 3.
A200: judging whether the screen capturing signal is generated by false touch;
specifically, the step of determining whether the screen capturing signal is a false touch in the present embodiment specifically includes the following steps:
a210: presetting the timing time length of a timing module;
a220: starting timing according to the screen capturing signal;
a230: judging whether an error touch signal is received or not;
in this embodiment, when the pressing portion 511 is located at the normal position, the conducting medium is filled in the conducting tube 51 and is in a static state, and at this time, the distance between the inner wall of the pressing portion 511 and the inner wall of the conducting tube 51 is L; when the conductive medium moves in the conducting tube 51 toward the pressing portion 511, and thus the pressing portion 511 is forced to expand, the distance between the inner wall of the pressing portion 511 and the inner wall of the conducting tube 51 is L2, wherein L2 is greater than L, the pressing portion 511 is at the false touch position, and the detecting member 53 sends a false touch signal to the processing module 3; when the pressing portion 511 is in a pressed state by a user, the distance between the inner wall of the pressing portion 511 and the inner wall of the conducting tube 51 is L1, wherein L1 is smaller than L, the conducting medium in the conducting tube 51 moves in a direction approaching the triggering portion 512, and at this time, the pressing portion 511 is in a pressed position, and the detecting member 53 does not send any signal;
a240: if the processing module 3 receives the false touch signal before timing is completed, repeating the step A100; if the processing module 3 does not receive the false touch signal before timing is completed, step a300 is executed.
A300: acquiring a handwriting image currently displayed by the display screen module 2 according to the screen capturing signal;
in this embodiment, the processing module 3 obtains a screenshot of a handwriting image displayed in the current display area of the display screen module 2.
A400: judging whether the handwriting image has a valid handwriting image or not;
specifically, the step of judging whether or not the handwriting image is valid in the present embodiment specifically includes the steps of:
a410: acquiring an initial image of the display screen module 2;
a420: comparing the handwriting image with the initial image;
a430: if the handwriting image is the same as the initial image, repeating the step A100; if the handwriting image and the initial image are different, step A500 is performed.
The processing module 3 calls out an initial image pre-stored in the storage module 4; then comparing the initial image with the currently acquired handwriting image; and if no handwriting exists on the currently acquired handwriting image, not storing the handwriting image.
A500: transmitting the handwriting image to the storage module 4;
the storage module 4 receives the handwriting image and stores the handwriting image.
A600: the processing module 3 sends a restoration signal to the display screen module 2, and the display screen module 2 restores the initial image according to the restoration signal.
When the user needs to view the stored handwriting image, this can be achieved by performing step B100.
B100, checking the stored handwriting images;
specifically, the step of viewing the stored handwriting image in the present embodiment specifically includes the steps of:
b110, obtaining a read signal;
when the conductive medium inside is pushed to a position where the conductive tube 51 is close to the triggering portion 512 along the length direction of the conductive tube 51, the triggering portion 512 can expand to trigger the first infrared proximity sensor, the triggering portion 512 moves to the reading position in the extending groove 72, and the controller sends a reading signal to the processing module 3.
The processing module 3 acquires the handwriting image in the storage module 4 according to the read signal and forwards the handwriting image to the display screen module 2 for display;
specifically, the step B120 specifically includes the following steps:
b121, acquiring the number N of handwriting images in the storage module 4, wherein N is a positive integer;
b122 if N >1; the N handwriting images are arranged in the display area of the display screen module 2 according to a preset standard.
In this embodiment, the preset standard is that the handwriting images are vertically and horizontally distributed in the display area according to the storage time of the handwriting images.
In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.
The foregoing description of the preferred embodiments of the present application is not intended to limit the scope of the application, in which any feature disclosed in this specification (including abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Claims (6)
1. The control method of the electromagnetic touch display device is characterized by comprising the following steps of:
acquiring a screen capturing signal;
acquiring a handwriting image currently displayed by the display screen module (2) according to the screen capturing signal;
transmitting the handwriting image to a storage module (4);
sending a recovery signal to the display screen module (2), wherein the display screen module (2) recovers an initial image according to the recovery signal;
the step of sending the recovery signal to the display screen module (2) further comprises the following steps:
acquiring a reading signal;
acquiring handwriting images in the storage module (4) according to the reading signals and forwarding the handwriting images to the display screen module (2) for display;
the electromagnetic touch display device comprises an electromagnetic touch sensing module (1), wherein the display screen module (2) is arranged on one side of the electromagnetic touch sensing module (1), the electromagnetic touch sensing module (1) is connected with a processing module (3) in a communication manner, the processing module (3) is connected with a storage module (4) and a triggering module (5) in a communication manner, and the triggering module (5) is arranged above the display screen module (2);
the triggering module (5) comprises a conducting pipe (51) and a triggering piece (52) which is connected with the processing module (3) in a communication way; the conducting pipe (51) is embedded in one side of the transparent cover plate (6) far away from the display screen module (2); the conduction pipe (51) is provided with a pressing part (511) and a triggering part (512); the trigger piece (52) is positioned at one side of the conducting pipe (51) close to the trigger part (512); the trigger part (512) is provided with a dormant position, a reading position and a trigger position relative to the trigger piece (52), the trigger part (512) can reciprocate among the dormant position, the reading position and the trigger position, and the conducting tube (51) is filled with a conducting medium; the conductive medium can reciprocate between a trigger part (512) and a pressing part (511) in the conduction pipe (51); when the trigger part (512) is positioned at the trigger position, the trigger piece (52) sends a screen capturing signal to the processing module (3); when the trigger part (512) is positioned at the reading position, the trigger piece (52) sends a reading signal to the processing module (3); one side of the electromagnetic touch sensing module (1) far away from the display screen module (2) is detachably connected with a transparent cover plate (6).
2. The control method of an electromagnetic touch display device according to claim 1, wherein: the step of sending the handwriting image to the storage module (4) is preceded by the steps of:
acquiring an initial image of a display screen module (2);
comparing the handwriting image with the initial image;
if the handwriting image is the same as the initial image, repeating the step of acquiring the screen capturing signal; if the handwriting image and the initial image are different, a step of transmitting the handwriting image to a storage module (4) is performed.
3. The control method of an electromagnetic touch display device according to claim 1, wherein: the step of acquiring the handwriting image currently displayed by the display screen module (2) according to the screen capturing signal further comprises the following steps:
presetting the timing time length of a timing module;
starting timing according to the screen capturing signal;
judging whether an error touch signal is received or not;
if the false touch signal is received before timing is completed, repeating the step of acquiring the screen capturing signal; and if the false touch signal is not received before timing is finished, executing the step of acquiring the handwriting image currently displayed by the display screen module (2) according to the screen capturing signal.
4. The control method of an electromagnetic touch display device according to claim 3, wherein: the step of acquiring the handwriting image in the storage module (4) according to the read signal and forwarding the handwriting image to the display screen module (2) for display specifically comprises the following steps:
acquiring the number N of handwriting images in a storage module (4);
if N >1; and arranging the N handwriting images in the display area of the display screen module (2) according to a preset standard.
5. A control system applied to the control method of the electromagnetic touch display device of claim 1, wherein: the trigger module (5) further comprises a detection piece (53) arranged in the pressing part (511), the pressing part (511) is provided with a false touch position and a normal position relative to the detection piece (53), the pressing part (511) can reciprocate between the false touch position and the normal position, the pressing part (511) is positioned at the false touch position, and when the trigger piece (52) is positioned at the trigger position, the detection piece (53) sends a false touch signal to the processing module (3).
6. The control system of the control method of the electromagnetic touch display device according to claim 5, wherein: marking particles (54) are arranged in the conductive medium, and the outer wall of the marking particles (54) is provided with a bright color layer; when the pressing part (511) is in the false touch position, the marking particles (54) are positioned in the pressing part (511); when the pressing portion (511) is located at the normal position, the marking particles (54) can move in a direction approaching the trigger portion (512).
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