CN111489467A

CN111489467A - Intelligent door lock, system and unlocking method based on UWB

Info

Publication number: CN111489467A
Application number: CN202010476179.3A
Authority: CN
Inventors: 余贤飞
Original assignee: Dessmann China Machinery and Electronic Co Ltd
Current assignee: Dessmann China Machinery and Electronic Co Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-08-04

Abstract

The application discloses intelligence lock, system and unblock method based on UWB, its intelligence lock system based on UWB includes mobile terminal and intelligent lock, and intelligent lock includes: the motor module is used for driving a mechanical door lock of the intelligent door lock; the main control module is used for controlling the motor module; the UWB module is used for positioning the UWB terminal equipment of the user; an antenna module for transmitting or receiving the UWB signal; the unlocking method is that the controller controls the motor module to execute unlocking action according to the interaction data of the UWB terminal equipment of the user fed back by the UWB module. The intelligent door lock, the intelligent door system and the unlocking method have the advantages that the intelligent door lock, the intelligent door system and the unlocking method have the secret key and distance judgment functions, so that barrier-free access is accurately realized.

Description

Intelligent door lock, system and unlocking method based on UWB

Technical Field

The application relates to an intelligent door lock based on UWB, a system and an unlocking method.

Background

The intelligent door lock is a lock which is different from a traditional mechanical lock and is more intelligent in the aspects of user identification, safety and manageability, and the intelligent door lock is a composite lock with safety, convenience and advanced technology.

In the prior art, the accessible entering door lock usually adopts the bluetooth to carry out data interaction, because the bluetooth data does not have accurate distance data, so actual effect is not good.

Disclosure of Invention

An intelligent UWB-based door lock comprising: the motor module is used for driving a mechanical door lock of the intelligent door lock; the main control module is used for controlling the motor module; the UWB module is used for positioning the UWB terminal equipment of the user; an antenna module for transmitting or receiving the UWB signal; the UWB module is respectively connected with the antenna module and the main control module through electric cores so that the controller controls the motor module to execute unlocking action according to interaction data of the UWB terminal equipment of the user fed back by the UWB module.

Further, the intelligent lock based on UWB still includes: the touch control module is used for being operated by a user to input information; the touch control module is electrically connected to the main control module.

Further, the intelligent lock based on UWB still includes: the fingerprint module is used for collecting fingerprint information of a user; the fingerprint module is electrically connected to the main control module.

Further, the intelligent lock based on UWB still includes: and the voice module is used for outputting voice information and is electrically connected to the main control module.

Further, the intelligent lock based on UWB still includes: and the power supply module is used for providing a direct-current power supply and is electrically connected to the main control module, the motor module and the UWB module.

Further, the interactive data transmitted by the UWB module to the main control module includes: distance data of the user's UWB terminal device and key data stored in the user's UWB terminal device.

Further, the main control module comprises: the distance judgment unit is used for judging whether the distance data in the interactive data meet preset conditions or not; and the key judging unit is used for judging whether the key data in the interactive data meet a preset condition or not.

Further, the main control module controls the motor module to unlock only when the judgment results of the distance judgment unit and the key judgment unit are both satisfied.

As another aspect of the present application, there is provided a UWB-based intelligent door lock system including a UWB-enabled mobile terminal and the UWB-based intelligent door lock as described above.

As another aspect of the present application, there is provided a UWB-based intelligent door lock unlocking method, including the steps of: receiving a UWB data packet; analyzing distance data and key data in the UWB data packet; judging whether the distance data and the secret key data meet preset conditions or not; and executing an unlocking action when the distance data and the secret key data both meet preset conditions.

The application has the advantages that: the intelligent door lock, the intelligent door system and the intelligent unlocking method have the advantages that the secret key and the distance judgment are realized, and therefore barrier-free access is accurately achieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic diagram of an intelligent door lock system according to an embodiment of the present application;

FIG. 2 is a schematic physical block diagram of an intelligent door lock according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an intelligent door lock module according to an embodiment of the present application;

FIG. 4 is a schematic diagram of steps of an unlocking method according to an embodiment of the present application.

Fig. 5 is a partial structural schematic diagram of an intelligent door lock according to another embodiment of the present application.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, the intelligent door lock system of the present application includes a mobile terminal 10 and an intelligent door lock 20, wherein the mobile terminal 10 has a UWB chip or module to receive and transmit UWB signals.

As a preferred scheme, as shown in fig. 2, the intelligent door lock of the present application comprises: the device comprises a shell 201, a camera 202, a fingerprint device 203, a touch screen 204 and a password disk 205.

As shown in fig. 3, the smart door lock includes: touch module, fingerprint module, voice module, power module, motor module, host system and UWB module.

The motor module is used for driving a mechanical door lock of the intelligent door lock; the main control module is used for controlling the motor module; the UWB module is used for positioning the UWB terminal equipment of the user; the antenna module is used for transmitting or receiving UWB signals.

The UWB module is respectively connected with the antenna module and the main control module through the electric core, so that the controller controls the motor module to execute unlocking action according to interaction data of the UWB terminal equipment of the user fed back by the UWB module.

As a preferred scheme, the main control module comprises: a distance judging unit and a key judging unit. The distance judging unit is used for judging whether the distance data in the interactive data meet preset conditions or not; the key judging unit is used for judging whether the key data in the interactive data meet preset conditions. The master control module controls the motor module to unlock only when the judgment results of the distance judgment unit and the secret key judgment unit are both satisfied.

As a specific scheme, for example, a positioning chip of a UWB ultra wide band is added to an iPhone11 mobile phone, so that the positioning accuracy is high, the interference is not easily caused, the timestamp accuracy is high, the electromagnetic compatibility is strong, and generally, in short-distance application, the transmission power of a UWB transmitter is generally lower than 1 mW; in long-range applications, a distance of 200 meters can be achieved without the need for additional power amplifiers, while achieving an air rate of 6.8 Mbps.

Through mutual distance data of UWB technique and secret key data, when the user held the cell-phone and is close to intelligent lock, thereby intelligent lock both can unblank automatically and realize accessible entering.

As shown in fig. 4, as another aspect of the present application, there is provided a UWB-based intelligent door lock unlocking method including the steps of:

receiving a UWB data packet;

analyzing distance data and key data in the UWB data packet;

judging whether the distance data and the secret key data meet preset conditions or not;

and executing an unlocking action when the distance data and the secret key data both meet preset conditions.

As an expansion scheme, when the distance data is judged, the difference value of the two sampled distance data is judged, or slope operation is carried out, if the distance data meets the requirement, the difference value or the slope data needs to be judged, and only when the slope data meets the preset value, unlocking is carried out, so that the situation that a user only passes through the intelligent door lock at a short distance can be prevented.

As a further extension, the UWB data packet includes coordinate data, and the main control module determines whether to unlock the door according to whether a connection line of a plurality of set positions in front of the mobile terminal of the user is within a preset angle range with a set determination plane (generally, a plane of a door).

By adopting the scheme, the accuracy of barrier-free door opening can be improved. There is still some chance of false triggering.

As a preferred embodiment, as shown in fig. 5, the smart door lock 100 includes: handle 101, fingerprint sensor 102, device housing 103, spindle 104, position encoder 105, motor 106, generator 107, circuit board 108, electrical energy storage device 109.

The fingerprint sensor 102 is used to identify fingerprint information of a user. Generally, the fingerprint sensor 102 has a fingerprint window disposed at a pivot position of the handle 101, and the fingerprint window is disposed outward. The specific structure and principles of the fingerprint sensor 102 are well known in the art and will not be described in detail herein.

The device shell 103 is used for accommodating internal equipment, and the handle 101 is rotatably connected to the outer side of the device shell; the main shaft 104 and the handle 101 form a rotation stopping connection; the position encoder 105 is used to detect the rotational position of the spindle 104; the motor 106 is used for realizing door opening action; the controller is used for realizing a control function. Bearings 112 may be employed to support the rotation of the main shaft 104.

The fingerprint sensor 102 is mounted at the handle 101 and electrically connected with the controller; the position encoder 105 and the motor 106 are electrically connected to the controller, respectively, so that the controller can control the motor 106 according to the data of the position encoder 105 and the fingerprint sensor 102.

Specifically, the electrical energy storage device 109 is used to store electrical energy; the generator 107 is used for converting mechanical energy into electric energy; the transmission mechanism is respectively connected to the main shaft 104 and the input shaft of the generator 107 so that the main shaft 104 can drive the input shaft of the generator 107 to rotate when rotating; wherein the electrical energy storage device 109 is electrically connected to the controller and the electric motor 106 to power them, and the generator 107 is electrically connected to the electrical energy storage device 109.

As a specific solution, the transmission mechanism may be formed by a set of meshing

bevel gears

110, 111. The electrical energy storage device 109 may include a lithium battery as a backup power source, and to prevent failure of the lithium battery, the electrical energy storage device 109 may employ a super capacitor as a backup device. The circuit board 108 is provided with a plurality of circuits such as a charging circuit and a voltage stabilizing circuit, etc., and electric energy generated when the generator 107 is rotated is preferentially stored in the super capacitor, and a stable voltage is generated by the super capacitor, thereby charging the lithium battery in case of surplus electric energy.

As an extension, the electric energy generated by the generator 107 is preferentially supplied to the controller and its peripheral circuits to power up the controller, and the circuit board 108 is provided with a voltage detection circuit which feeds back the voltages of the lithium battery and the capacitor to the controller, and if the controller finds that the lithium battery has a low electric quantity and the capacitor has a low electric quantity, the charging circuit for charging the lithium battery by the capacitor is firstly disconnected, and the electric quantity is preferentially supplied to the controller.

Based on this hardware solution, when the user turns the handle, either the position encoder 105 or the generator 107 can be used as a trigger condition for triggering UWB interaction, and then UWB judgment is performed as described above, such a solution can accurately judge the user's intention. The barrier-free access can be realized without using fingerprints, and the barrier-free access means that the user does not need to perform verification of other actions except the door opening action.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like 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 UWB-based door lock comprising:

the motor module is used for driving a mechanical door lock of the intelligent door lock;

the main control module is used for controlling the motor module;

the method is characterized in that:

the intelligent lock based on UWB still includes:

the UWB module is used for positioning the UWB terminal equipment of the user;

an antenna module for transmitting or receiving the UWB signal;

the UWB module is respectively connected with the antenna module and the main control module through electric cores so that the controller controls the motor module to execute unlocking action according to interaction data of the UWB terminal equipment of the user fed back by the UWB module.

2. The UWB-based smart door lock according to claim 1, wherein:

the intelligent lock based on UWB still includes: the touch control module is used for being operated by a user to input information; the touch control module is electrically connected to the main control module.

3. The UWB-based smart door lock according to claim 1, wherein:

the intelligent lock based on UWB still includes: the fingerprint module is used for collecting fingerprint information of a user; the fingerprint module is electrically connected to the main control module.

4. The UWB-based smart door lock according to claim 1, wherein:

the intelligent lock based on UWB still includes: and the voice module is used for outputting voice information and is electrically connected to the main control module.

5. The UWB-based smart door lock according to claim 1, wherein:

the intelligent lock based on UWB still includes: and the power supply module is used for providing a direct-current power supply and is electrically connected to the main control module, the motor module and the UWB module.

6. The UWB-based smart door lock according to claim 1, wherein:

the interactive data transmitted to the main control module by the UWB module comprises the following steps: distance data of the user's UWB terminal device and key data stored in the user's UWB terminal device.

7. The UWB-based intelligent door lock of claim 6 wherein:

the master control module comprises:

the distance judgment unit is used for judging whether the distance data in the interactive data meet preset conditions or not;

and the key judging unit is used for judging whether the key data in the interactive data meet a preset condition or not.

8. The UWB-based smart door lock according to claim 7, wherein:

the master control module controls the motor module to unlock only when the judgment results of the distance judgment unit and the secret key judgment unit are both satisfied.

9. The utility model provides an intelligence lock system based on UWB which characterized in that: comprising a UWB-enabled mobile terminal and a UWB-based smart door lock according to any of claims 1 to 8.

10. An intelligent door lock unlocking method based on UWB is characterized in that:

the intelligent door lock unlocking method based on the UWB comprises the following steps:

receiving a UWB data packet;

analyzing distance data and key data in the UWB data packet;