Intelligent door lock for completing earthquake monitoring based on attitude sensor

Abstract

The intelligent door lock comprises an MCU microprocessor and the attitude sensor, the attitude sensor is configured to complete real-time monitoring of X, Y and Z accelerated speeds and X, Y and Z angular speeds of a door body, the vertical direction serves as the Z axis, the direction perpendicular to a door plate serves as the Y axis, the direction parallel to the door plate serves as the X axis, the Z axis serves as the Z axis, and the Z axis serves as the Z axis. The MCU microprocessor completes numerical calculation of a pitch angle Pitch, a roll angle Roll and a yaw angle Yaw on the basis of the X, Y and Z accelerations and X, Y and Z angular velocities of the door body acquired by the attitude sensor, judges whether an earthquake occurs or not on the basis of the numerical values of the pitch angle Pitch, the roll angle Roll and the yaw angle Yaw and the numerical values of the X, Y and Z acceleration registers, and sends an alarm when the earthquake occurs. By means of the earthquake-proof door lock, when an earthquake comes, the door lock can be opened in time, an alarm is given out, and the situation that a user cannot escape from a room in time due to door deformation caused by the earthquake can be effectively avoided.

Description

Technical Field

[0001] This application belongs to the technical field of intelligent door locks, and particularly relates to an intelligent door lock that completes earthquake monitoring based on an attitude sensor. Background Art

[0002] Seismic waves are divided into three types according to the propagation mode: P-waves, S-waves, and surface waves. P-waves are compression waves with a propagation speed of 5.5 - 7 km / s in the earth's crust. They arrive at the epicenter first and cause the ground to vibrate vertically, with relatively weak destructiveness. S-waves are shear waves with a propagation speed of 3.2 - 4.0 km / s in the earth's crust. They arrive at the epicenter second and cause the ground to shake back and forth and from side to side, with relatively strong destructiveness. Surface waves are mixed waves generated by the encounter of P-waves and S-waves on the earth's surface. They have long wavelengths and strong amplitudes and can only propagate along the earth's surface, being the main factor causing severe damage to buildings.

[0003] When an earthquake comes, under the action of S-waves and surface waves, if an ordinary door lock fails to open the door in time, the door will be deformed by the earthquake and unable to be opened normally, thus preventing the people indoors from safely escaping and causing harm. On the other hand, intelligent door locks that support networking and earthquake arrival notifications are costly and rely on network conditions, and are mostly used for deployment in first-tier urban areas. It is difficult to deploy them in remote mountainous areas, plains, etc. where the network and economic conditions are poor.

[0004] How to improve so that the intelligent door lock is inexpensive, does not require networking, can safely and reliably protect the safety of the home, and can monitor earthquakes is a problem that those skilled in the art need to solve. Summary of the Invention

[0005] The purpose of this application is to: in order to overcome the problems of the prior art, an intelligent door lock that completes earthquake monitoring based on an attitude sensor is disclosed, overcoming the disadvantages that traditional mechanical door locks cannot be opened normally after being deformed by an earthquake, traditional intelligent door locks cannot obtain earthquake information and open the door lock in the case of network disconnection, and traditional intelligent door locks are costly.

[0006] The purpose of this application is achieved through the following technical solutions:

[0007] An intelligent door lock that completes earthquake monitoring based on an attitude sensor, the intelligent door lock includes: an MCU microprocessor and an attitude sensor,

[0008] The attitude sensor is configured to complete real-time monitoring of the X, Y, Z accelerations and X, Y, Z angular velocities of the door body, where the vertical direction is the Z-axis, the direction perpendicular to the door panel is the Y-axis, and the direction parallel to the door panel is the X-axis.

[0009] The MCU microprocessor calculates the values of the pitch angle, roll angle, and yaw angle based on the X, Y, and Z accelerations and X, Y, and Z angular velocities of the door body collected by the attitude sensor. It also determines whether an earthquake has occurred based on the values of the pitch angle, roll angle, yaw angle, and the values in the X, Y, and Z acceleration registers. When it is determined that an earthquake has occurred, the MCU microprocessor controls the door lock to open and remain open.

[0010] According to a preferred embodiment, when an earthquake comes, the longitudinal wave arrives at the ground first, causing the ground to vibrate up and down. At this time, the door body and the intelligent door lock vibrate up and down together.

[0011] The value in the Z-axis acceleration register monitored by the attitude sensor changes significantly, while the X and Y axis accelerations are relatively stable. When the MCU microprocessor detects that the change amplitudes of the values in the Z-axis acceleration register, pitch angle, and roll angle of the attitude sensor reach the trigger threshold, the intelligent door lock automatically opens and remains open.

[0012] According to a preferred embodiment, when an earthquake comes, after the longitudinal wave arrives at the ground, the horizontal shaking of the ground caused by the transverse wave and surface wave causes the door and the door lock to shake horizontally. At this time, the value in the acceleration register of the X and / or Y axis monitored by the attitude sensor changes, and the Z-axis acceleration is stable. When the MCU microprocessor detects that the change amplitudes of the values in the X-axis and / or Y-axis acceleration registers, yaw angle, and roll angle of the attitude sensor reach the trigger threshold, it triggers the intelligent door lock to automatically open and remain open.

[0013] According to a preferred embodiment, when the door body is normally opened or closed or violently impacted, the door and the intelligent door lock rotate around the door axis. At this time, the values of the acceleration registers of both the X and Y axes and the yaw angle value change significantly and reach the threshold, while the value in the Z-axis acceleration register and the pitch angle and roll angle values remain unchanged. At this time, the MCU microprocessor controls the door lock to maintain its original state.

[0014] According to a preferred embodiment, the intelligent door lock further includes a buzzer. When the MCU microprocessor determines that an earthquake has occurred, it controls the buzzer to sound an alarm.

[0015] According to a preferred embodiment, the intelligent door lock further includes a fingerprint sensor. When the fingerprint sensor receives a fingerprint and successfully matches it with the preset information in the MCU microprocessor, it controls the servo inside the intelligent door lock to unlock.

[0016] According to a preferred embodiment, the intelligent door lock further includes an NFC sensor. When the NFC sensor receives an IC card and successfully matches it with preset information in the MCU microprocessor, the MCU microprocessor controls the servo inside the intelligent door lock to unlock.

[0017] According to a preferred embodiment, the intelligent door lock further includes a matrix keyboard. When the matrix keyboard receives the input password and successfully matches it with preset information in the MCU microprocessor, the MCU microprocessor controls the servo inside the intelligent door lock to unlock.

[0018] According to a preferred embodiment, the intelligent door lock further includes an OLED screen, and the intelligent door lock can perform data interaction with the user based on the OLED screen.

[0019] According to a preferred embodiment, the intelligent door lock further includes a Flash memory for storing various preset information data of the intelligent door lock. Data such as passwords, fingerprints, and NFC are all stored in the Flash memory, and the data will not be lost even when the power is off.

[0020] The main solution of the present application and its various further selection solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in the present application. Those skilled in the art can understand that there are various combinations according to the prior art and common general knowledge after understanding the solution of the present application, and all of them are the technical solutions to be protected by the present application, which will not be exhaustively listed here.

[0021] Advantages of the present application:

[0022] The intelligent door lock of the present application can be applied to any region. While having various unlocking functions of traditional intelligent door locks, it can monitor earthquakes without connecting to the network. When an earthquake comes, it can open the door lock in time and issue an alarm, effectively avoiding being unable to escape from the indoor due to the deformation of the door caused by the earthquake, and having extremely high stability. Brief Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the circuit system structure of an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the earthquake monitoring process of the present invention.

[0025] Figure 3 It is a three-dimensional plan view of the position of the attitude sensor in the intelligent door lock of an embodiment of the present invention.

[0026] Figure 4 It is a circuit diagram of the MCU microprocessor of an embodiment of the present invention.

[0027] Figure 5The circuit diagram powered by the power supply according to an embodiment of the present invention.

[0028] Figure 6 The circuit diagram of the attitude sensor according to an embodiment of the present invention.

[0029] Figure 7 The circuit diagram of the matrix keyboard according to an embodiment of the present invention.

[0030] Figure 8 The circuit diagram of the Flash memory according to an embodiment of the present invention.

[0031] Figure 9 The circuit diagram of the buzzer according to an embodiment of the present invention.

[0032] Figure 10 The connection diagram of the external module according to an embodiment of the present invention. Detailed implementation manners

[0033] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0034] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0036] In addition, it should be pointed out in the present application that, in the present application, if the specific structures, connection relationships, position relationships, power source relationships, etc. involved are not specifically written, the structures, connection relationships, position relationships, power source relationships, etc. involved in the present application are all known to those skilled in the art on the basis of the prior art without creative labor.

[0037] Reference Figure 1As shown in the figure, an intelligent door lock for earthquake monitoring based on an attitude sensor is shown in the figure. The intelligent door lock includes: an attitude sensor 201, a fingerprint sensor 202, an NFC sensor 203, a matrix keyboard 204, an MCU processor 205, a buzzer 206, an unlocking mechanism 207, a locking mechanism 208, a servo 209, an OLED screen 210, and a Flash memory 211.

[0038] The attitude sensor 201 is configured to complete real-time monitoring of the X, Y, and Z accelerations and the X, Y, and Z angular velocities of the door body. Here, the vertical direction is defined as the Z-axis, the direction perpendicular to the door panel is defined as the Y-axis, and the horizontal direction within the door panel plane is defined as the X-axis.

[0039] When the values in the X and Y acceleration registers of the attitude sensor, the yaw angle Yaw, and the roll angle Roll do not change violently beyond the threshold, when the fingerprint sensor 202 receives a fingerprint and the MCU microprocessor 205 successfully matches it, the servo 209 is controlled to unlock; when the NFC sensor 203 receives an IC card and the MCU microprocessor 205 successfully matches it, the servo 209 is controlled to unlock; when the matrix keyboard 204 receives a 6-digit password and the MCU microprocessor 205 successfully matches it, the servo 209 is controlled to unlock; if the match is not successful, the locked state is maintained. When the values in the X and Y acceleration registers of the attitude sensor 201, the yaw angle Yaw, and the roll angle Roll change violently beyond the threshold, the MCU microprocessor 205 controls the servo 209 to open the door lock and maintains the unlocked state, and at the same time the buzzer 206 emits an alarm.

[0040] Figure 2 The relevant processes for the present application to perform earthquake monitoring and control the door lock to open or maintain the original state based on the corresponding monitoring structure are shown. Specifically, it includes:

[0041] The arrival of the earthquake P-wave on the ground, the arrival of the earthquake S-wave or surface wave on the ground, normal opening and closing of the door, or violent hitting of the door.

[0042] When the earthquake P-wave arrives on the ground, the ground shakes up and down, driving the door and the door lock to shake up and down together. When the values in the Z acceleration register of the attitude sensor on the door lock, the yaw angle Yaw, and the roll angle Roll change violently, and the MCU microprocessor 110 detects that the values in the Z acceleration register, the pitch angle Pitch, and the roll angle Roll exceed the threshold in a 10ms interrupt, the lock is opened and the unlocked state is maintained.

[0043] When the seismic shear wave or surface wave reaches the ground, the ground shakes from side to side, driving the door and the door lock 302 to shake from side to side together. The values of the acceleration registers on the X and / or Y axes, the yaw angle Yaw, and the roll angle Roll of the attitude sensor on the door lock change violently. The MCU microprocessor detects in the interrupt that the values of the acceleration registers on the X and / or Y axes, the yaw angle Yaw, and the roll angle Roll exceed the threshold, and at this time, the lock is opened and the unlocked state is maintained.

[0044] When the door is normally opened or closed or violently struck, the door and the door lock 302 rotate around the door axis or move back and forth, which will cause the values of the acceleration registers on the X and Y axes and the yaw angle Yaw of the attitude sensor on the door to change violently, but will not cause the values of the acceleration register on the Z axis, the pitch angle Pitch, and the roll angle Roll to change. At this time, after the MCU microprocessor detects it, it maintains the original state of the lock. Such a design ensures that while monitoring earthquakes, there will be no false earthquake judgments due to normal door opening and closing and violent strikes on the door by criminals, ensuring the safety and stability of the indoor environment.

[0045] Figure 3 FIG. 7 is a three-dimensional plan view of the position of the attitude sensor in the intelligent door lock according to an embodiment of the present invention. The intelligent door lock includes four parts: an intelligent door lock mechanical frame, a circuit board, an attitude sensor, and a door handle. Figure 3 In FIG. 7, the shown X, Y, and Z coordinate axes represent the specific orientations of the attitude sensor in the intelligent door lock mechanical frame. Figure 3 The circuit board in FIG. 7 includes Figure 2 all sensors and the MCU microprocessor. At the same time, Figure 3 FIG. 7 shows the flipping directions of the yaw angle Yaw, roll angle Roll, and pitch angle Pitch of the attitude sensor.

[0046] Figure 4 FIG. 19 is a circuit diagram of an MCU microprocessor. The circuit diagram includes four parts: a domestic MCU microprocessor HT32F52352-64LQFP 401, a reset circuit 402, a decoupling capacitor 403, and a download circuit 404. The domestic MCU microprocessor HT32F52352-64LQFP 401 uses an 8M crystal oscillator to provide a clock, which is stable and reliable.

[0047] Figure 5 FIG. 23 is a circuit diagram of a power supply. The circuit diagram includes: 5V power supply through an XT60 interface, using AMS1117-3.3 to convert the 5V voltage into 3.3V voltage to supply voltage to Figure 4 the domestic MCU microprocessor HT32F52352-64LQFP 401 in FIG. 19, and using RT9013 to convert the 5V voltage into 3.3V voltage to supply voltage to Figure 6 the attitude sensor in FIG. 7.

[0048] Figure 6 The circuit diagram of the attitude sensor for an embodiment of the present invention. This circuit diagram includes: an ICM20602 attitude sensor, which is used to monitor the acceleration and angular velocity data in the X, Y, and Z directions of the intelligent door lock. The data is provided to Figure 4 the domestic HT32F52352-64LQFP MCU microprocessor 401. The MCU fuses these six data to calculate the values of yaw angle Yaw, roll angle Roll, and pitch angle Pitch. The MCU microprocessor 401 can determine whether an earthquake has occurred by checking whether the values of the X, Y, and Z acceleration registers and the yaw angle Yaw, roll angle Roll, and pitch angle Pitch reach the threshold, thereby achieving the function of earthquake monitoring.

[0049] On the pins: Figure 6 The SCL / SPC of the attitude sensor is connected to Figure 4 PA0 of the domestic HT32F52352-64LQFP MCU microprocessor 401. Figure 6 The SDA / SDI of the attitude sensor is connected to Figure 4 PA1 of the domestic HT32F52352-64LQFP MCU microprocessor 401. Figure 6 The SA0 / SDO of the attitude sensor is connected to Figure 4 PA2 of the domestic HT32F52352-64LQFP MCU microprocessor 401. Figure 6 The CS of the attitude sensor is connected to Figure 4 PA3 of the domestic HT32F52352-64LQFP MCU microprocessor 401. Figure 6 The INT of the attitude sensor is connected to Figure 4 PA4 of the domestic HT32F52352-64LQFP MCU microprocessor 401. The domestic HT32F52352-64LQFP MCU microprocessor 401 communicates with the Figure 6 attitude sensor through the SPI communication protocol. The domestic HT32F52352-64LQFP MCU microprocessor 401 uses its own 10ms timer interrupt to start an interrupt every 10ms to read the Figure 6 X, Y, and Z acceleration and X, Y, and Z angular velocity register values of the attitude sensor, and fuses these six values to calculate the values of yaw angle Yaw, roll angle Roll, and pitch angle Pitch.

[0050] Figure 7 For Figure 1Circuit diagram of the middle matrix keyboard 204. The circuit diagram includes: 9 buttons. In terms of button functions, KEY14 corresponds to the number 0, KEY15 corresponds to the capital key, KEY16 corresponds to the lowercase key, KEY10 corresponds to the number 1, KEY11 corresponds to the number 2, KEY12 corresponds to the number 3, KEY6 corresponds to the number 4, KEY7 corresponds to the number 5, KEY8 corresponds to the number 6, KEY2 corresponds to the number 7, KEY3 corresponds to the number 8, KEY4 corresponds to the number 9, KEY17 corresponds to the confirmation key, KEY13 corresponds to the delete key, KEY9 corresponds to the menu key, and KEY5 corresponds to the selection key. In the button circuit, the pin 1 of buttons 2 to 5 is connected in series and then connected to Figure 4 the PB0 pin of the domestic MCU microprocessor 401, HT32F52352-64LQFP, in Figure 4 the PB1 pin of the domestic MCU microprocessor 401, HT32F52352-64LQFP, in Figure 4 the PB2 pin of the domestic MCU microprocessor 401, HT32F52352-64LQFP, in Figure 4 the PB3 pin of the domestic MCU microprocessor 401, HT32F52352-64LQFP, in Figure 4 the PB4 pin of the domestic MCU microprocessor 401, HT32F52352-64LQFP, in Figure 4 the PB5 pin of the domestic MCU microprocessor 401, HT32F52352-64LQFP, in Figure 4 the PB6 pin of the domestic MCU microprocessor 401, HT32F52352-64LQFP, in Figure 4 the PB7 pin of the domestic MCU microprocessor 401, HT32F52352-64LQFP. By scanning the rows and columns of the matrix keyboard, the MCU microprocessor 401 can obtain the button pressed by the person, respond to the person's operation, and display it on the OLED screen 210. For example, functions such as entering a password, changing a password, resetting a password, entering a fingerprint, entering NFC, deleting a fingerprint, and deleting NFC.

[0051] Figure 8 For Figure 1Circuit diagram of Flash memory 211, which includes: Here, W25Q64 is used for the pin connection between Flash memory 211 and the domestic MCU microprocessor 401 of HT32F52352-64LQFP. The CS pin of Flash memory 211 is connected to the PD2 pin of the domestic MCU microprocessor 401 of T32F52352-64LQFP. The DO pin of Flash memory 211 is connected to the PA2 pin of the domestic MCU microprocessor 401 of T32F52352-64LQFP. The CLK pin of Flash memory 211 is connected to the PA0 pin of the domestic MCU microprocessor 401 of T32F52352-64LQFP. The DI pin of Flash memory 211 is connected to the PA1 pin of the domestic MCU microprocessor 401 of T32F52352-64LQFP.

[0052] Figure 9 For Figure 1 Circuit diagram of buzzer 206 in, which uses the NPN triode plus freewheeling diode method to drive the buzzer, and the base of the triode is connected to PA6 of the domestic MCU microprocessor 401 of T32F52352-64LQFP.

[0053] Figure 10 For Figure 1Interface circuit diagrams of the NFC sensor 203, the servo 209, the fingerprint sensor 202, and the OLED screen 210. For the OLED screen 210, SCL is connected to the PC9 pin of the domestic MCU microprocessor 401 of T32F52352-64LQFP, and SDA is connected to the PC2 pin of the domestic MCU microprocessor 401 of T32F52352-64LQFP; the control pin of the servo is connected to the PD1 pin of the domestic MCU microprocessor 401 of T32F52352-64LQFP; the NFC_MISO of the NFC sensor is connected to the PC12 of the domestic MCU microprocessor 401 of T32F52352-64LQFP, the NFC_MOSI of the NFC sensor is connected to the PC11 of the domestic MCU microprocessor 401 of T32F52352-64LQFP, the NFC_RST of the NFC sensor is connected to the PC10 of the domestic MCU microprocessor 401 of T32F52352-64LQFP, the NFC_SCK of the NFC sensor is connected to the PC1 of the domestic MCU microprocessor 401 of T32F52352-64LQFP, and the NFC_SDA of the NFC sensor is connected to the PC5 of the domestic MCU microprocessor 401 of T32F52352-64LQFP; the ZW_TX of the fingerprint sensor is connected to the PA15 of the domestic MCU microprocessor 401 of T32F52352-64LQFP, and the ZW_RX of the fingerprint sensor is connected to the PA14 of the domestic MCU microprocessor 401 of T32F52352-64LQFP.

[0054] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent door lock for earthquake monitoring based on an attitude sensor, characterized in that, The intelligent door lock includes: an MCU microprocessor and an attitude sensor, The attitude sensor is configured to complete real-time monitoring of the X, Y, and Z accelerations and the X, Y, and Z angular velocities of the door body, where the vertical direction is the Z-axis, the direction perpendicular to the door panel is the Y-axis, and the direction parallel to the door panel is the X-axis, The MCU microprocessor calculates the values of the pitch angle, roll angle, and yaw angle based on the X, Y, and Z accelerations and the X, Y, and Z angular velocities of the door body collected by the attitude sensor, and determines whether an earthquake has occurred based on the values of the pitch angle, roll angle, yaw angle, and the values in the X, Y, and Z acceleration registers. When it is determined that an earthquake has occurred, the MCU microprocessor controls the door lock to open and remain in the open state.

2. The intelligent door lock according to claim 1, characterized in that When an earthquake comes, the longitudinal wave arrives at the ground first, causing the ground to vibrate up and down. At this time, the door body and the intelligent door lock vibrate up and down together, The value in the Z-axis acceleration register monitored by the attitude sensor changes, and the X and Y axis accelerations are stable. When the MCU microprocessor monitors that the change amplitude of the value in the Z-axis acceleration register, pitch angle, and roll angle of the attitude sensor reaches the trigger threshold, the intelligent door lock automatically opens and remains in the open state.

3. The intelligent door lock according to claim 2, characterized in that When an earthquake comes, after the longitudinal wave arrives at the ground, the horizontal shaking of the ground caused by the transverse wave and surface wave causes the door and the door lock to shake horizontally, The value in the acceleration register of the X and / or Y axis monitored by the attitude sensor changes, and the Z-axis acceleration is stable. When the MCU microprocessor monitors that the change amplitude of the value in the acceleration register of the X and / or Y axis, yaw angle, and roll angle of the attitude sensor reaches the trigger threshold, the intelligent door lock is triggered to open automatically and remains in the open state.

4. The intelligent door lock according to claim 1, characterized in that, When the door body is normally opened or closed or violently impacted, the door and the intelligent door lock rotate around the door axis. At this time, the values of the acceleration registers of both the X and Y axes and the yaw angle change and reach the threshold, while the value in the Z-axis acceleration register and the pitch angle and roll angle values remain unchanged. At this time, the MCU microprocessor controls the door lock to remain in its original state.

5. The intelligent door lock according to claim 1, characterized in that, The intelligent door lock further includes a buzzer, which is controlled by the MCU microprocessor to emit an alarm after it determines that an earthquake has occurred.

6. The intelligent door lock according to claim 1, characterized in that, The intelligent door lock further includes a fingerprint sensor, which controls the servo inside the intelligent door lock to unlock after receiving a fingerprint and successfully matching it with the preset information in the MCU microprocessor.

7. The intelligent door lock according to claim 1, wherein The intelligent door lock further includes an NFC sensor, which controls the servo inside the intelligent door lock to unlock after receiving an IC card and successfully matching it with the preset information in the MCU microprocessor.

8. The intelligent door lock according to claim 1, characterized in that The intelligent door lock further includes a matrix keyboard, which controls the servo inside the intelligent door lock to unlock after receiving the input password and successfully matching it with the preset information in the MCU microprocessor.

9. The intelligent door lock according to claim 1, characterized in that, The intelligent door lock further includes an OLED screen, and the intelligent door lock can perform data interaction with the user based on the OLED screen.

10. The intelligent door lock according to claim 1, characterized in that, The intelligent door lock further includes a Flash memory, which is used to store the data of each preset information of the intelligent door lock.

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