WO2020228268A1

WO2020228268A1 - Multifunction liquid crystal handwriting tablet and monitoring system

Info

Publication number: WO2020228268A1
Application number: PCT/CN2019/116278
Authority: WO
Inventors: 何海洋
Original assignee: 何海洋
Priority date: 2019-05-16
Filing date: 2019-11-07
Publication date: 2020-11-19
Also published as: CN209525642U

Abstract

A multifunction liquid crystal handwriting tablet, related to the technical field of electronic devices. The multifunction liquid crystal handwriting tablet comprises: a body (1), a flexible liquid crystal handwriting module (2), a positioning module, and a power supply device (4). The flexible liquid crystal handwriting module (2) is embedded on the surface of the body (1). The positioning module and the power supply device (4) are provided within the body (1), and, the positioning module and the flexible liquid crystal handwriting module (2) are electrically connected to the power supply device (4). The multifunction liquid crystal handwriting tablet can be repeatedly erased and written on to serve as an electronic scratch paper, thus ensuring the convenience and environmental friendliness of the handwriting tablet, also additionally provides a positioning function and a storage function, is particularly applicable for a young child, allows the positioning and identification of position information of same, prevents same from getting lost, has diverse functions, and provides strong practicability.

Description

Multifunctional LCD handwriting board and monitoring system

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on May 16, 2019, with the application number 201920716522.X and the name "Multifunctional Liquid Crystal Handwriting Panel", the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the technical field of electronic equipment, and in particular to a multifunctional liquid crystal handwriting board and a monitoring system.

Background technique

At present, with the development of the electronics industry, electronic liquid crystal handwriting tablets are widely used as electronic draft paper for writing and painting due to their repeated erasing and use characteristics. Many parents equip their children with electronic liquid crystal handwriting tablets to cultivate their children’s writing As well as drawing literacy, but the existing electronic LCD handwriting board is only used as an electronic draft graffiti, with single function and low practicability.

Summary of the invention

The purpose of this application is to provide a multifunctional liquid crystal handwriting board to solve the technical problems of single function and low practicability of the electronic liquid crystal handwriting board in the prior art to a certain extent.

The present application provides a multifunctional liquid crystal handwriting board, including: a body, a flexible liquid crystal handwriting module, a positioning module, and an energy supply device; wherein the flexible liquid crystal handwriting module is embedded on the surface of the body; the positioning module And the energy supply device is arranged inside the body, and both the positioning module and the flexible liquid crystal handwriting module are electrically connected with the energy supply device.

In the above technical solution, optionally, the body includes a panel and a base; the panel is connected to the base; the interior of the base is hollow; and the flexible liquid crystal handwriting module is embedded in the panel away from the On one side surface of the base.

In any of the above technical solutions, optionally, a groove portion is provided on the side of the base away from the panel, the groove portion forms an accommodation space, and the accommodation space is configured as storage.

In any of the above technical solutions, optionally, a cover plate is provided on the opening of the accommodating space, the cover plate is detachably connected to the edge of the opening of the accommodating space, and a scale is provided on the cover plate And geometric openwork patterns.

In any of the above technical solutions, optionally, a first magnet is provided in the containing space, and a second magnet is provided on the cover plate; the first magnet and the second magnet interact to make the The cover plate is detachably adsorbed at the opening of the containing space.

In any of the above technical solutions, optionally, an electronic clock is further arranged inside the main body, and the display screen of the electronic clock is embedded on a surface of the panel facing away from the base.

In any of the above technical solutions, optionally, it further includes a control module; the control module is arranged in the body, and the control module is electrically connected to the flexible liquid crystal handwriting module and the positioning module, respectively.

In any of the above technical solutions, optionally, it further includes an alarm module; the alarm module is arranged in the body, and the alarm module is electrically connected to the control module, when the position identified by the positioning module leaves When the predetermined position is set, the control module can control the alarm module to issue an alarm and send the alarm signal generated by it to the terminal.

In any of the above technical solutions, optionally, it further includes a fall trigger module; the fall trigger module is arranged inside the body and is electrically connected to the alarm module; the fall trigger module includes a shrapnel and a conducting part When the shrapnel is oscillated, it deforms relative to the conductive portion and electrically contacts the conductive portion to connect the circuit of the alarm module to make the alarm module issue a corresponding alarm.

In any of the above technical solutions, optionally, a water flow channel is provided on the body, and the water flow channel communicates with the fall trigger module; when the body falls into the water, water flows through the water flow channel. Between the elastic piece and the conducting portion, so that the elastic piece and the conducting portion are connected.

In any of the above technical solutions, optionally, it further includes a fall trigger module electrically connected to the control module; the fall trigger module includes a multi-axis accelerometer, and the control module detects When the acceleration in all directions of the multifunctional liquid crystal handwriting board meets the preset fall characteristics, the alarm module is triggered to issue a corresponding alarm.

In any of the above technical solutions, optionally, a water immersion sensor is further provided outside the body; the water immersion sensor is electrically connected to the alarm module, and is configured to be called when detecting that the body falls into the water. The alarm module issues a corresponding alarm.

In any of the above technical solutions, optionally, the energy supply device is a lithium battery.

This application also provides a multifunctional LCD handwriting board monitoring system, including a server and the multifunctional LCD handwriting board provided by this application;

The multifunctional liquid crystal handwriting board wirelessly communicates with the server, and sends the position information obtained by the positioning module to the server;

The server also communicates with the terminal, and sends the location information or alarm information generated according to the location information to the terminal.

In any of the above technical solutions, optionally, the server is further configured to determine whether the multifunctional liquid crystal handwriting tablet is located in a set area according to a preset time detection strategy or position detection strategy, and report to the The terminal sends an alert.

Compared with the prior art, the beneficial effects of the embodiments of the present application include:

The multifunctional liquid crystal handwriting board and monitoring system provided by the embodiments of this application include: a main body, a flexible liquid crystal handwriting module, a positioning module, and an energy supply device; wherein the flexible liquid crystal handwriting module is embedded on the surface of the main body, and the main body is capable of facing the flexible liquid crystal The handwriting module provides effective support. The user can use the flexible liquid crystal handwriting module as electronic draft paper for writing and drawing, which can be repeatedly erased and written, and has good environmental protection characteristics; the positioning module and the energy supply device are set inside the body and positioned Both the module and the flexible liquid crystal handwriting module are electrically connected to the power supply device, so that the power supply device can provide power to the positioning module and the flexible liquid crystal handwriting module, ensuring that the positioning module and the flexible liquid crystal handwriting module can be powered on. In addition, an independent The accommodating slot is configured to store stationery; when the user carries the multifunctional LCD handwriting board and is far away from the predetermined position range of the positioning module, the positioning module can identify the user's position information, locate the user, and prevent the user from getting lost , Especially suitable for younger children.

It can be seen that the multifunctional liquid crystal handwriting board provided by the embodiments of the present application can be repeatedly erased and used as electronic draft paper, which ensures the convenience and environmental protection of the handwriting board. It also adds positioning and storage functions, and is especially suitable for older people. Small children can locate and recognize their location information to avoid getting lost. The function is diverse and has strong practicability.

Description of the drawings

In order to more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the specific embodiments or the description of the prior art. Obviously, the appendix in the following description The drawings are some embodiments of the application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a multifunctional liquid crystal handwriting tablet provided by an embodiment of the application at a first viewing angle;

2 is a schematic structural diagram of a multifunctional liquid crystal handwriting tablet provided by an embodiment of the application in a second viewing angle;

3 is a schematic diagram of a part of the structure of a multifunctional liquid crystal handwriting board provided by an embodiment of the application;

4 is another schematic diagram of the structure of the multifunctional liquid crystal handwriting board provided by the embodiment of the application;

Fig. 5 is a schematic diagram of a multifunctional liquid crystal handwriting board monitoring system provided by an embodiment of the application.

Reference signs:

1- body, 101- panel, 102- base, 103- cover, 104- accommodating space, 2- flexible LCD handwriting module, 3- control module, 4- energy supply device, 5- electronic clock, 6-alarm module, 7-Fall trigger module, 701-conductor, 702-shrapnel, 100-multi-function LCD tablet, 200-server, 300-terminal.

Detailed ways

The technical solutions of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments.

The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of this application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of this application, it should be noted that the terms "installation", "connection", and "connection" should be interpreted broadly unless otherwise clearly specified and limited. For example, it can be a fixed connection or a detachable connection. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this application can be understood under specific circumstances.

Hereinafter, the multifunctional liquid crystal handwriting board provided according to this embodiment will be described with reference to FIGS. 1 to 4.

As shown in FIG. 1, an embodiment of the present application provides a multifunctional liquid crystal handwriting board, which includes a main body 1, a flexible liquid crystal handwriting module 2, a positioning module, and an energy supply device 4. The flexible liquid crystal handwriting module 2 is embedded on the surface of the body 1. The positioning module and the energy supply device 4 are arranged inside the body 1, and both the positioning module and the flexible liquid crystal handwriting module 2 are electrically connected to the energy supply device 4.

The flexible liquid crystal handwriting module 2 is embedded on the surface of the main body 1. The main body 1 can effectively support the flexible liquid crystal handwriting module 2. The user can use the flexible liquid crystal handwriting module 2 as electronic draft paper for writing or drawing, and can be repeatedly erased and written. Has good environmental protection characteristics.

The positioning module and the energy supply device 4 are arranged inside the body 1, and both the positioning module and the flexible liquid crystal handwriting module 2 are electrically connected to the energy supply device 4, so that the power supply device can provide electric energy for the positioning module and the flexible liquid crystal handwriting module 2 to ensure positioning The module and the flexible liquid crystal handwriting module 2 can be powered on. In addition, the main body 1 can also be provided with an independent receiving groove, which is configured to store stationery.

When the user carries the multi-function LCD handwriting board and is far away from the predetermined position range of the positioning module, the positioning module can recognize the user's position information, locate the user, and prevent the user from getting lost, especially suitable for young people child.

The multifunctional liquid crystal handwriting board provided in this embodiment can be repeatedly erased and used as electronic draft paper, which ensures the convenience and environmental protection of the handwriting board, and also adds positioning and storage functions, especially suitable for younger children , It can locate and recognize its location information, avoid getting lost, and has diverse functions and strong practicability.

Wherein, optionally, the flexible liquid crystal handwriting module 2 is a bistable cholesteric liquid crystal handwriting board, and its working principle is that after the bistable cholesteric liquid crystal is added with a glare agent and assembled into a box, it will be changed by handwriting pressure. It can reflect incident natural light of different wavelengths to form a handwritten trace display. After the voltage is applied, the liquid crystal returns to the default arrangement, and the handwriting is eliminated. The user can use a suitable stylus or directly use a finger to write or draw on the liquid crystal handwriting film of the bistable cholesteric liquid crystal handwriting board.

Among them, optionally, the positioning module is a GPS locator, a wifi locator, a Beidou locator, a base station locator, etc. Of course, they are not limited to this, and those skilled in the art can fully understand and have the ability to select the appropriate one according to the actual situation. The positioning method will not be repeated here.

In this embodiment, optionally, as shown in FIGS. 1 and 4, the body 1 includes a panel 101 and a base 102. The panel 101 is connected to the base 102, and the inside of the base 102 is hollow. The flexible liquid crystal handwriting module 2 is embedded on the surface of the panel 101 facing away from the base 102.

In this embodiment, the panel 101 and the base 102 are detachably connected, and the inside of the base 102 is hollow, so that there is enough space inside to accommodate the positioning module and the energy supply device 4. An installation window is opened on the panel 101, and the handwriting surface of the flexible liquid crystal handwriting module 2 is exposed on the installation window of the panel 101, and the handwriting surface of the flexible liquid crystal handwriting module 2 can be directly used for writing and drawing. The panel 101 may also be provided with a USB interface, and the USB interface is connected to the power supply device, and can connect a signal reading device or receive external electric energy to charge the power supply device.

Wherein, optionally, when the positioning module is a base station positioning terminal, a mobile phone card is provided in the positioning module. At this time, a communication module is added to the base 102, and a physical button and a speaker are added to the panel 101 to connect the two with the communication module. Electric connection can also realize the call function.

In this embodiment, optionally, as shown in FIG. 4, a groove portion is provided on the side of the base 102 away from the panel 101, the groove portion forms an accommodation space 104, and the accommodation space 104 is configured as storage.

In this embodiment, a side of the base 102 away from the panel 101 is recessed to form an accommodation space 104. The accommodation space 104 can store learning supplies such as pens, rulers, erasers, and compasses, and can also be configured to store copy works or reference pictures.

In this embodiment, optionally, as shown in FIGS. 2 to 4, a cover 103 is provided on the opening of the accommodating space 104, and the cover 103 is detachably connected to the edge of the opening of the accommodating space 104, and the cover 103 There are scales and geometric hollow patterns on it.

Optionally, a male buckle is provided on the cover 103 of the base 102, a female buckle is provided on the edge of the accommodating space 104, and the male buckle and the female buckle can be buckled with each other.

Wherein, optionally, a first magnet is provided in the accommodating space 104, and a second magnet is provided on the cover 103, and the interaction between the first magnet and the second magnet enables the cover 103 to be detachably adsorbed in the accommodating space. The opening of the space 104.

Optionally, scales are provided on the surface of the cover plate 103 on the side facing away from the accommodating space 104. Specifically, the scales are provided on both sides of the length direction of the surface of the cover plate 103. One side of the scale is a millimeter scale, and the other The side scale is an inch scale, so that the cover plate 103 can be used as a ruler; the hollow geometric pattern on the surface of the cover plate 103 can be used as a template for the user to depict geometric figures.

Wherein, optionally, the cover plate 103 is a transparent plate, and the internal situation of the accommodating space 104 can be observed through the cover plate 103.

In this embodiment, optionally, as shown in FIG. 1, an electronic clock 5 is further arranged inside the main body 1, and the display screen of the electronic clock 5 is embedded on the surface of the panel 101 facing away from the base 102.

In this embodiment, the user can intuitively see the time displayed by the electronic clock 5 and control the writing and drawing progress.

Wherein, optionally, the electronic clock 5 can adopt a common LCD clock module, which will not be repeated here.

In this embodiment, optionally, as shown in FIG. 1, a control module 3 is further included. The control module 3 is arranged in the main body 1, and the control module 3 is electrically connected with the flexible liquid crystal handwriting module 2 and the positioning module, respectively.

In this embodiment, the control module 3 can control the flexible liquid crystal handwriting module 2 and the positioning module to work normally, so that the position information located by the positioning module can be displayed on the control terminal or the mobile terminal.

Wherein, optionally, the control module 3 is also connected with a communication module. The communication module may be a 3G, 4G, 5G, WiFi communication module or other radio frequency communication module.

Wherein, optionally, the control module 3 is a single-chip microcomputer, ARM, or other controller capable of realizing corresponding functions, which can be fully understood by those skilled in the art.

In this embodiment, optionally, the multifunctional liquid crystal handwriting board further includes an alarm module 6. The alarm module 6 is arranged in the body 1, and the alarm module 6 is electrically connected to the control module 3. When the position identified by the positioning module leaves the predetermined position, the control module 3 can control the alarm module 6 to issue an alarm and send the alarm signal generated by it To the terminal.

In one example, a certain range of predetermined positions is preset for the positioning module. When the user is far away from the predetermined position, the alarm module 6 generates an alarm signal, and the control module 3 controls the alarm module 6 to send the alarm signal to the bound terminal , The user’s location information can be checked through the terminal, especially for students. When the child is far away from the predetermined location, the alarm module 6 will issue an alarm to remind the student that the student is beyond the predetermined location range. Parents can also learn about the situation in time to avoid accidents such as the child’s loss. When class is late, parents can also check the child's location at any time.

In another example, the multifunctional liquid crystal handwriting tablet may further include a communication module configured to perform wireless communication with the server to send the location information obtained by the positioning module to the server, so that the server can The location information is sent to the corresponding terminal, or the server determines whether the multifunctional liquid crystal handwriting tablet is located in the set area according to a preset time detection strategy or location detection strategy, and sends an alarm to the terminal according to the detection result.

Wherein, optionally, the terminal may be a mobile phone, a tablet computer, a personal computer, etc., of course, it is not limited to this.

Optionally, an APP developed for the multifunctional LCD handwriting board can be downloaded on the mobile phone, and the alarm signal generated by the alarm module 6 is sent to the APP directly or through a server, and parents can intuitively view the alarm signal and location information through the APP.

In an example, as shown in Figure 3, it also includes a fall trigger module 7; the fall trigger module 7 is arranged inside the body 1 and is electrically connected to the alarm module 6; the fall trigger module 7 includes a shrapnel 702 and a conducting portion 701, when The shrapnel 702 can shift relative to the conducting portion 701 and contact the conducting portion 701 when receiving the shock, and can trigger the circuit of the alarm module 6 to be turned on and send an alarm signal to the terminal.

In this example, the conductive portion 701 is wrapped on the outside of the elastic piece 702, and a predetermined distance is set between the elastic piece 702 and the conductive portion 701. The maximum offset distance of the elastic piece 702 is greater than the predetermined distance, and the conductive portion 701 passes The first wire is electrically connected to the alarm module 6, and the shrapnel 702 is electrically connected to the alarm module 6 through the second wire. When the student falls together with the body 1, the shrapnel 702 is greatly shaken and the offset distance is not less than the preset distance. The conduction part 701 contacts to conduct the circuit, and the alarm module 6 generates a fall alarm signal and sends it to the mobile phone APP. Parents can know the situation in time and take countermeasures, especially for students in remote mountainous areas.

In this embodiment, optionally, as shown in FIG. 3, a water flow channel is provided on the main body 1, and the water flow channel is in communication with the fall trigger module 7. When the body 1 falls into the water, the water flows between the elastic piece 702 and the conducting portion 701 through the water flow channel, so that the elastic piece 702 and the conducting portion 701 are connected.

In this embodiment, when the student falls into the water connected to the main body 1, the space between the shrapnel 702 and the conducting part 701 is filled with water, triggering the circuit of the alarm module 6 to be turned on, and the alarm signal is sent to the mobile phone APP, so that parents can know the situation and Take countermeasures.

In another example, the fall trigger module may include a multi-axis accelerometer. The multi-axis accelerometer is electrically connected to the control module, and the control module triggers the multi-axis accelerometer when the multi-axis accelerometer detects that the acceleration of the multi-function liquid crystal tablet complies with a preset fall feature The alarm module issues corresponding alarms.

A water immersion sensor may also be provided on the outside of the body 1. The water immersion sensor is electrically connected to the alarm module, and is configured to call the alarm module to issue a corresponding alarm when detecting that the body 1 falls into the water. The water immersion sensor may be a contact type water immersion sensor.

In this embodiment, optionally, the energy supply device 4 is a lithium battery, which is light in weight and has a high storage energy density to ensure the endurance time. Of course, the energy supply device 4 is not limited to a lithium battery.

Referring to FIG. 5, this embodiment also provides a multifunctional liquid crystal handwriting tablet monitoring system. The system includes a server 200 and the multifunctional liquid crystal handwriting tablet 100 provided by this embodiment.

The multifunctional liquid crystal handwriting board 100 wirelessly communicates with the server 200, and sends the position information obtained by the positioning module to the server 200.

The server 200 also communicates with the terminal 300, and sends the location information or alarm information generated according to the location information to the terminal 300.

Optionally, the server 300 may also be configured to determine whether the location information is located in a set area according to a preset time detection strategy or location detection strategy, and send an alarm to the terminal according to the detection result.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this embodiment, not to limit it; although this embodiment has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technology of the embodiments of this application The scope of the program.

Industrial applicability

The multifunctional liquid crystal handwriting board provided by this embodiment includes: a main body, a flexible liquid crystal handwriting module, a positioning module, and an energy supply device; wherein the flexible liquid crystal handwriting module is embedded on the surface of the main body, and the main body can effectively perform the flexible liquid crystal handwriting module. Support, the user can use the flexible liquid crystal handwriting module as electronic draft paper for writing and drawing, which can be repeatedly erased and written, and has good environmental protection characteristics; the positioning module and the energy supply device are arranged inside the body, and the positioning module and the flexible liquid crystal The handwriting module is electrically connected to the energy supply device, so that the power supply device can provide power to the positioning module and the flexible liquid crystal handwriting module, ensuring that the positioning module and the flexible liquid crystal handwriting module can be powered on. In addition, an independent receiving slot can be provided in the body. To store stationery; when the user carries the multi-function LCD handwriting board away from the predetermined position range of the positioning module, the positioning module can identify the user's position information, locate the user, and prevent the user from getting lost, especially suitable for Younger children.

It can be seen that the multifunctional liquid crystal handwriting board provided in this embodiment can be repeatedly erased and used as electronic draft paper, which ensures the convenience and environmental protection of the handwriting board, and also adds positioning and storage functions, especially suitable for younger people. Children can locate and recognize their location information to avoid getting lost. The function is diverse and has strong practicability.

Claims

A multifunctional liquid crystal handwriting board, characterized by comprising: a main body, a flexible liquid crystal handwriting module, a positioning module, and an energy supply device; wherein the flexible liquid crystal handwriting module is embedded on the surface of the main body; the positioning module And the energy supply device is arranged inside the body, and both the positioning module and the flexible liquid crystal handwriting module are electrically connected with the energy supply device.
The multifunctional liquid crystal handwriting tablet according to claim 1, wherein the body comprises a panel and a base; the panel is connected to the base; the interior of the base is hollow; the flexible liquid crystal handwriting module is embedded On the surface of the panel facing away from the base.
The multifunctional liquid crystal handwriting tablet according to claim 2, wherein a groove portion is provided on the side of the base away from the panel, the groove portion forms an accommodation space, and the accommodation space is configured as storage .
The multifunctional liquid crystal handwriting tablet according to claim 3, wherein a cover is provided on the opening of the accommodation space, and the cover is detachably connected to the edge of the opening of the accommodation space, and the cover Scales and geometric hollow patterns are set on the board.
The multifunctional liquid crystal handwriting board according to claim 4, wherein a first magnet is provided in the containing space, and a second magnet is provided on the cover; the first magnet and the second magnet The interaction makes the cover plate detachably adsorbed at the opening of the containing space.
The multifunctional liquid crystal handwriting board according to claim 2, wherein an electronic clock is further provided inside the main body, and a display screen of the electronic clock is embedded on the surface of the panel facing away from the base. on.
The multifunctional liquid crystal handwriting board according to any one of claims 1 to 6, further comprising a control module; the control module is arranged in the body, and the control module is respectively connected to the flexible liquid crystal handwriting The module is electrically connected to the positioning module.
The multifunctional liquid crystal handwriting board according to claim 7, further comprising an alarm module; the alarm module is arranged in the body, and the alarm module is electrically connected with the control module, when the positioning When the position identified by the module leaves the predetermined position, the control module can control the alarm module to issue a corresponding alarm and/or send the alarm signal generated by it to the terminal.
The multifunctional liquid crystal handwriting tablet according to claim 8, further comprising a fall trigger module; the fall trigger module is arranged inside the body and is electrically connected to the alarm module; the fall trigger module includes The shrapnel and the conducting part, when the shrapnel is deformed relative to the conducting part and making electrical contact with the conducting part when subjected to shocks, so as to connect the circuit of the alarm module and make the alarm module send out corresponding Alert.
The multifunctional liquid crystal handwriting tablet according to claim 9, wherein the main body is provided with a water flow channel, and the water flow channel communicates with the fall trigger module; when the main body falls into the water, the water passes through The water flow channel flows between the elastic piece and the conducting portion, so that the elastic piece is connected to the conducting portion.
The multifunctional liquid crystal handwriting tablet according to claim 8, further comprising a fall trigger module electrically connected to the control module; the fall trigger module includes a multi-axis accelerometer, and the control module When the multi-axis accelerometer detects that the acceleration in all directions of the multifunctional liquid crystal handwriting board meets the preset fall characteristics, the alarm module is triggered to issue a corresponding alarm.
The multifunctional liquid crystal handwriting board according to claim 8, wherein a water immersion sensor is further provided outside the body; the water immersion sensor is electrically connected to the alarm module, and is configured to detect that the body falls When entering the water, the alarm module is called to send a corresponding alarm.
The multifunctional liquid crystal handwriting board according to any one of claims 1-12, wherein the energy supply device is a lithium battery.
A multifunctional LCD handwriting board monitoring system, characterized by comprising a server and the multifunctional LCD handwriting board according to any one of claims 1-10;

The multifunctional liquid crystal handwriting board wirelessly communicates with the server, and sends the position information obtained by the positioning module to the server;

The server also communicates with the terminal, and sends the location information or alarm information generated according to the location information to the terminal.
The system according to claim 14, wherein the server is further configured to determine whether the multifunctional liquid crystal handwriting tablet is located in a set area according to a preset time detection strategy or a position detection strategy, and report to the location according to the detection result. The terminal sends an alert.