Intelligent door lock device and control method thereof

Abstract

The present application relates to a kind of intelligent door lock device and its control method, the door lock includes door lock body, handle, and be used to drive lock bolt and be arranged in handle and lock cylinder mechanism;Lock cylinder mechanism includes lock cylinder shell, lock core, and the pin shaft assembly of locking lock core and lock cylinder shell;The outer side wall of lock core is equipped with V-shaped groove, the two arms of V-shaped groove are connected with inner cavity, and two passages are provided on the lock cylinder shell for the two arms of V-shaped groove, and light guide is provided on the lock cylinder shell corresponding to passage;The door lock further includes the key for rotating lock core, the detection module that emits light beam towards key and receives the light beam and measures the reflectivity of key by the light beam returned, and the clutch mechanism connected with lock cylinder and lock bolt, and the controller of controlling detection module and clutch mechanism;Corresponding window is provided on the key with the reflecting surface of reflected light beam;When opening door, the light reflected back is detected by detection module, to judge whether the light is the light reflected by the key matched with door lock body, to prevent the door lock opened by imitation key.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent control of door locks, and in particular to an intelligent door lock device and a control method thereof. BACKGROUND

[0002] At present, when a security door in daily production and life is opened, an appropriate key needs to be inserted to achieve door opening, but this also leaves a hidden danger for door lock safety. Some lawbreakers will use a wire or a piece of iron to detect the lock cylinder inside the door lock and illegally open the lock to commit theft and illegal activities. It can be seen that the safety of the existing door lock with a lock cylinder still needs to be improved. Therefore, it is necessary to provide a new intelligent door lock to solve the above problems. SUMMARY

[0003] The present application aims at the deficiencies of the prior art, and provides an intelligent door lock device and a control method thereof, which can well solve the above problems.

[0004] To achieve the above requirements, the technical scheme adopted by the present application to solve its technical problems is as follows:

[0005] An intelligent door lock device is provided, which comprises a door lock body, a handle provided on the door lock body, a lock cylinder mechanism provided in the handle and used for driving a lock tongue, the lock cylinder mechanism comprising a lock cylinder shell, a lock cylinder provided in the lock cylinder shell, and a pin shaft assembly radially movably provided on the inner cavity side wall of the lock cylinder; the lock cylinder and the lock cylinder shell are locked by the pin shaft assembly; a V-shaped groove is provided on the outer side wall of the lock cylinder, the two arm connecting ends of the V-shaped groove are communicated with the inner cavity through a window, two channels are provided on the lock cylinder shell corresponding to the two arms of the V-shaped groove, and a light guide piece is provided on the lock cylinder shell corresponding to the channels; the door lock further comprises a key used for inserting and rotating the lock cylinder, a detection module cooperating with the light guide piece to emit a light beam towards the key and receive a returned light beam and measure the reflectivity of the key based on the returned light beam, a clutch mechanism connecting the lock cylinder and the lock tongue, and a controller controlling the detection module and the clutch mechanism.

[0006] The intelligent door lock device provided by the present application, wherein a reflective surface for reflecting the light beam is provided on the key corresponding to the window, and at least two reflective positions are provided side by side on the reflective surface along the length direction of the key, and the light reflectivity of one of the reflective positions is greater or smaller than that of the other reflective position.

[0007] The intelligent door lock device, wherein the detection module comprises an LED lamp bead and a reflectivity sensor receiving light reflected by the reflection positions; the LED lamp bead and the reflectivity sensor are electrically connected with the controller; when the two reflection positions pass through the window in sequence, the reflectivity sensor generates first and second unlocking information and sends the controller; and the controller controls the clutch mechanism to connect the lock cylinder and the bolt according to the first and second unlocking information.

[0008] The intelligent door lock device, wherein the clutch mechanism comprises a fixed shaft coaxially connected with the lock cylinder at one end of the lock cylinder facing the door lock body, a movable shaft coaxially and slidingly connected with the fixed shaft, a driving unit driving the movable shaft to move axially and reciprocally, and a connecting shaft coaxially arranged at one end of the movable shaft away from the lock cylinder; the connecting shaft is used for driving the bolt, an insertion slot is arranged on an end face of the connecting shaft facing the movable shaft, a stop portion is arranged on the movable shaft, and a slot is arranged on an inner wall of the insertion slot corresponding to the stop portion; in the disconnected state, the movable shaft is located outside the insertion slot.

[0009] The intelligent door lock device, wherein the driving unit comprises a gear arranged horizontally and a micro motor driving the gear to rotate; an inner cavity is arranged axially in the movable shaft, the movable shaft is sleeved on the fixed shaft, an annular tooth adapted to the gear is circumferentially arranged on an outer side wall of the movable shaft, and a plurality of annular teeth are uniformly arranged along the axial direction of the movable shaft.

[0010] The intelligent door lock device, wherein a guide shaft is coaxially fixed on the bottom surface of the insertion slot, a guide slot is arranged on the movable shaft corresponding to the guide shaft, the end of the guide shaft extends out of the insertion slot and is inserted into the guide slot, a spring is sleeved on the guide shaft, and the movable shaft is kept outside the insertion slot by the spring.

[0011] The intelligent door lock device, wherein the handle comprises an L-shaped handle body and a handle base arranged on the door lock body; the transverse end of the handle body is longitudinally rotationally connected with the handle base, an installation cavity is arranged in the transverse end of the handle body, the lock cylinder mechanism, the light guide member and the clutch mechanism are arranged in the installation cavity, a key hole is arranged on the front side wall of the installation cavity, and an avoiding hole and a through hole for the light guide member are arranged on the handle base corresponding to the clutch mechanism.

[0012] The intelligent door lock device, wherein the light guide member comprises a light guide block opposite to the outlet of the channel and a flexible light guide strip connected with the light guide block; and the light guide block is fixed on the lock cylinder housing.

[0013] Further, a control method of the intelligent door lock device is also provided, which comprises the following steps:

[0014] The detection module emits a first light beam towards the window and receives a second light beam reflected back, and generates an electrical signal according to the real-time second light beam;

[0015] A difference between the detected electrical signal and the electrical signal before irradiation is formed, and the spectral reflectance of the reflecting surface is calculated according to the size of the difference;

[0016] It is judged whether the spectral reflectance is within a standard range, and the standard range is uniquely bound to the key;

[0017] When the spectral reflectance is within the standard range, the clutch mechanism is controlled to connect the lock cylinder and the bolt, otherwise, the clutch mechanism is kept in a disconnected state.

[0018] The implementation principle of the present application is that when the door is opened, the detection module detects the light reflected back through the reflecting surface, and calculates the reflectance of the reflecting surface reflecting the light, and then judges whether the reflectance is within a standard range, if it is within the standard range, it means that the reflecting surface is on the key matched with the door lock body, and then the bolt and the lock cylinder can be connected through the clutch mechanism, so as to facilitate the user to rotate the lock cylinder and open the bolt; if the reflectance is not within the standard range, it means that the key inserted into the lock cylinder is an illegal key, at this time, the clutch mechanism is controlled to keep in a disengaged state, so as to prevent the illegal key from driving the bolt to move when rotating and thus causing the door to be opened.

[0019] The present application has the following advantages:

[0020] 1. By detecting the reflectance of the reflecting surface on the key inserted into the lock cylinder and comparing it with the reflectance of the real key, the legality of the inserted key can be judged, so as to prevent illegal keys such as iron pieces or iron wires from opening the door lock after being inserted into the lock cylinder, and also prevent the real key matched with the door lock body from being copied by a template and used to open the door lock, greatly improving the security of the door lock;

[0021] 2. The lock cylinder mechanism and the clutch mechanism are arranged in the handle, which can greatly reduce the volume of the door lock body, and further improve the compactness of the door lock structure, when the volume is reduced, compared with the traditional door lock with large volume, the appearance and weight of the door lock of the present application are more beautiful and lighter, which is more conducive to the sales of the product, and the installation cavity opened on the security door is smaller, which can avoid reducing the overall structural strength of the security door.

[0022] 3. In the non-opening time, the detection module can scan the inside of the lock case regularly to determine whether a key is inserted, and the interval detection mode is more energy-saving, which can greatly improve the use time of the battery of the door lock, and the detection module can realize the functions of key insertion detection and reflectivity detection, which is more efficient, avoids the setting of too many hardware devices, and further prevents the size of the door lock from being large. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the present application will be further described below with reference to the drawings and embodiments. The drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings:

[0024] Figure 1 is the overall structure diagram of the intelligent door lock device of the present application.

[0025] Figure 2 is the horizontal sectional view of the handle of the intelligent door lock device of the present application.

[0026] Figure 3 is the local structure enlarged view in Figure 2

[0027] Figure 4 is the local structure enlarged view in Figure 2

[0028] Figure 5 is the connection diagram of the connecting shaft and the lock tongue of the intelligent door lock device of the present application.

[0029] Figure 6 is the connection diagram of the connecting shaft and the lock tongue of the intelligent door lock device of the present application.

[0030] Figure 7 is the layout diagram of the reflection position on the key of the intelligent door lock device of the present application.

[0031] Figure 8 is the local structure enlarged view in Figure 2

[0032] Figure 9 is the schematic diagram of the detection module of the intelligent door lock device of the present application.

[0033] Figure 10 is the connection diagram of the controller and the detection module and the clutch mechanism of the intelligent door lock device of the present application.

[0034] Figure 11 is the control method step flow chart of the intelligent door lock of the present application. DETAILED DESCRIPTION

[0035] ​​​The terms "first", "second", "third", and "fourth" and the like in the description and in the claims of the present application and the accompanying drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. The terms "comprises", "comprising", "includes", "including" and the like are used herein to mean either "consists" or "consisting of" and include the terms "consisting essentially of" and "consists essentially of". The terms "comprises", "comprising", "includes", "including" and the like are used herein to mean either "consists" or "consisting of" and include the terms "consisting essentially of" and "consists essentially of". Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any of the following "terms of degree" (e.g., "comprising", "including", "containing", "consisting of", "consists essentially of", "consisting essentially of", "consisting of", "selected from the group of consisting of", "involving", "having", "including", "possessing", "selected from", "having", "characte

[0036] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all referring to a particular embodiment which is "preferred" over other embodiments. It is explicitly contemplated that embodiments described herein can be combined with each other.

[0037] "Multiple" means two or more. "And / or", describing the association relationship of associated objects, means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0038] Furthermore, the terms "upper", "lower", "left", "right", "upper end", "lower end", "vertical", and the like indicating the orientation are based on the attitude position of the device or equipment described in the scheme when it is normally used.

[0039] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0040] The intelligent door lock device of the preferred embodiment of the present application, such as Figures 1-10As shown, the door lock comprises a door lock body 1, and a handle 2 arranged on the door lock body 1; the door lock further comprises a lock cylinder mechanism 3 arranged in the handle 2 and used for driving a lock bolt 100, the lock cylinder mechanism 3 comprises a lock cylinder shell 31, a lock cylinder 32 arranged in the lock cylinder shell 31, and a pin shaft assembly 33 radially movably arranged on the side wall of an inner cavity 6 of the lock cylinder 32, and the lock cylinder 32 is locked with the lock cylinder shell 31 through the pin shaft assembly 33. As the prior art, the pin shaft assembly 33 comprises a pin shaft body 331, a spring 332 pushing the pin shaft body 331 towards the lock cylinder 32, and a spacer shaft 333 between the spring 332 and the pin shaft body 331; wherein the spring 332 is radially arranged in the lock cylinder shell 31, and the spacer shaft 333 has one end in the lock cylinder shell 31 and one end in the lock cylinder 32 in the non-unlocking state, thereby locking the lock cylinder 32 and the lock cylinder shell 31 and preventing the lock cylinder shell 31 from rotating relative to the lock cylinder 32. In the unlocking state, the pin shaft is pushed outwards by the key, so that the spacer shaft 333 completely enters the lock cylinder shell 31, and then the lock cylinder 32 can be twisted by the key 9.

[0041] Further, a V-shaped groove 4 is arranged on the outer side wall of the lock cylinder 32, the V-shaped groove 4 is in a horizontal state and is along the radial direction of the lock cylinder 32, the two arm connecting ends of the V-shaped groove 4 are communicated with the inner cavity 6 through a window 5, two passages 7 are coaxially arranged on the lock cylinder shell 31 corresponding to the two arms of the V-shaped groove 4, light guides 8 are arranged on the lock cylinder shell 31 corresponding to the passages 7, and the two light guides 8 are arranged along the axial direction of the lock cylinder shell 31; the door lock further comprises a key 9 for inserting and rotating the lock cylinder 32, a detection module 10 for emitting a light beam towards the key 9 through one light guide 8 and receiving the reflected light beam through the other light guide 8 and measuring the reflectivity of the key 9 according to the reflected light beam, a clutch mechanism 11 connecting the lock cylinder and the lock bolt 100, and a controller 12 controlling the detection module 10 and the clutch mechanism 11.

[0042] The controller 12 and the detection module 11 are arranged in the door lock body 1, one light guide 8 is used for guiding the incident light beam from one end of the V-shaped groove 4, and the light beam is shot again from the other end of the V-shaped groove 4 to the other light guide 8 after being reflected by the reflecting surface, so that the light beam returns to the detection module 10 for analog-to-digital conversion to form an electric signal which can be recognized by the controller 12, in addition, the detection module 10 can also be used for timing scanning whether the key 9 is inserted into the window 5, specifically, when the detection module 10 emits the light beam towards the window 5 through the light guide 8, in the case that the key 9 is not inserted, the emitted light beam is reflected on the side wall of the inner cavity 6 away from the window 5 due to the communication between the V-shaped groove 4 and the inner cavity 6 of the lock cylinder 32, so that the light beam cannot return to the other light guide 8 and enter the detection module 10 again, while in the case that the key 9 is inserted into the inner cavity 6, the side wall of the key 9 forms a reflecting surface and is close to the window 5, so that the emitted light beam can be reflected back to the detection module 10 through the key 9, and then it can be judged that the key 9 is inserted when the light beam is detected to return, so that the light beam emitted by the detection module 10 can be used for detecting the reflectivity of the key 9 and detecting whether the key 9 is inserted, which is one stone that can hit many birds.

[0043] Correspondingly, during the scanning stage of the detection module 10, the controller 12 receives the signal of the detection module 10 as the basis for judging the next step, and when the signal corresponding to the insertion of the key 9 is received, the controller 12 controls the detection module 10 to emit the light beam again for detecting the reflectivity of the key 9, in order to ensure the accuracy of measurement, the emission mode of the light beam for detecting the reflectivity generally lasts for a certain time.

[0044] When the door is opened, the light reflected back by the reflecting surface formed by the side wall of the key is detected by the detection module 10, the controller 12 calculates the reflectivity of the reflecting surface reflecting the light according to the light reflected back, and then judges whether the reflectivity is within the standard range, if it is within the standard range, it indicates that the reflecting surface is the reflecting surface on the key 9 matched with the door lock body 1, and then the clutch mechanism 11 is connected with the lock tongue 100 and the lock cylinder 32, the user rotates the lock cylinder 32 and pushes the lock tongue 100 to open the security door, and if the reflectivity is not within the standard range, it indicates that the key 9 inserted into the lock cylinder 32 is an illegal key 9, at this time, the clutch mechanism 11 is kept in the disengaged state to prevent the illegal key 9 from driving the lock tongue 100 to move when rotating and causing the door to be opened.

[0045] The advantages of the present application are as follows:

[0046] 1. By detecting the reflectivity of the reflective surface on the key 9 inserted into the lock cylinder 32 and comparing it with the reflectivity of the real key 9, the legality of the inserted key 9 can be determined. This can prevent illegal keys 9, such as iron pieces or wires, from being inserted into the lock cylinder 32 to open the lock. Moreover, it can also prevent the real key 9 that matches the lock body 1 from being copied and used to open the lock. Compared with traditional purely mechanical locks, even if the pin assembly 33 is pushed into the lock cylinder housing 31 so that the lock cylinder 32 can rotate, the bolt 100 cannot be rotated to open the lock, which greatly improves the security of the lock.

[0047] 2. By placing the lock cylinder mechanism 3 and the clutch mechanism 11 inside the handle 2, the volume of the door lock body 1 can be greatly reduced, which can further improve the structural compactness of the door lock. When the volume is reduced, compared with the traditional bulky door lock, the door lock of this solution has a more beautiful appearance and lighter weight, which is more conducive to product sales. Moreover, the installation cavity opened on the security door is smaller, which can avoid reducing the overall structural strength of the security door.

[0048] 3. During non-door opening hours, the detection module 10 can periodically scan the inside of the lock cylinder 32 to determine whether a key 9 has been inserted. The equally spaced detection method is more energy-efficient and can greatly extend the battery life of the door lock. Moreover, the detection module 10 can perform both key 9 insertion detection and reflectivity detection, achieving multiple benefits in one go. This avoids the need for too many hardware devices and further prevents the door lock from becoming too large.

[0049] Preferably, to further enhance security and prevent the lock from being illegally opened due to the counterfeiting of the key 9's structure and material, a reflective surface 13 for reflecting light beams is provided on the key 9 at the position corresponding to the window 5. At least two reflective positions 14 are arranged side by side on the reflective surface 13 along the length of the key 9. The light reflectivity of one reflective position 14 is greater than or less than that of the other reflective position 14. When the key 9 is inserted into the inner cavity 6 of the lock cylinder 32, the two reflective positions 14 pass through the window 5 in sequence, so that the detection module 10 can receive two signals with different reflectivities. The two different signals can form a specific password uniquely bound to the key 9. Therefore, even if the key 9 is counterfeited, the counterfeited key 9 cannot open the lock, greatly improving the security of the key 9 and providing double insurance. In practice, one of the two reflective positions 14 can be set as a frosted surface and the other as a mirror surface to ensure that the difference in reflectivity is large enough. Alternatively, the two reflective surfaces 13 can be set as two inclined surfaces with different orientation angles so that the amount of light reflected back to the detection module 10 is different.

[0050] Preferably, the detection module 10 comprises an LED lamp bead 101 and a reflectivity sensor 102 receiving the light reflected by the reflection positions 14, and specifically, the LED lamp bead 101 and the reflectivity sensor 102 are integrated on the circuit board 121 of the controller 12; the LED lamp bead 101 and the reflectivity sensor 102 are electrically connected with the controller 12, when the two reflection positions 14 pass through the window 5 in turn, the reflectivity sensor 102 generates first unlocking information and second unlocking information in turn and sends to the controller 12, when the first unlocking information and the second unlocking information match the preset information, the controller 12 controls the clutch mechanism 11 to connect the lock cylinder 32 and the lock tongue 100 according to the first unlocking information and the second unlocking information, and pushes the lock tongue 100 to open the door lock, and when the first unlocking information and the second unlocking information do not match the preset information, it indicates that the inserted key 9 is illegal, and the controller 12 does not control the clutch mechanism 11 to act, so that the illegal unlocking person cannot open the door lock.

[0051] In addition, in order to prevent the structure and material of the key from being imitated to cause the door lock to be opened, an NFC chip 91 communicating with the controller can be arranged in the plastic base of the hand-held part of the key, and when the key is unlocking, the controller determines again whether the inserted key is the key matched with the door lock body through the NFC chip 91; further, in order to avoid the risk that the door lock is opened due to the loss or theft of the key, a remote communication communication unit can be integrated in the controller, so that the user can install the corresponding app on the mobile phone to know the opening or closing of the door lock.

[0052] Preferably, the clutch mechanism 11 comprises a fixed shaft 111 coaxially connected with the lock cylinder 32 at one end of the lock cylinder 32 facing the door lock body 1, a movable shaft 112 coaxially and slidingly connected with the fixed shaft 111, a driving unit 113 driving the movable shaft 112 to axially reciprocate, and a connecting shaft 114 coaxially arranged at one end of the movable shaft 112 away from the lock cylinder 32; the rear end of the lock cylinder 32 extends out of the lock cylinder housing 31 to be connected with the fixed shaft 111, and the connecting shaft 114 is generally provided with a swing arm 15 radially, which can push the lock tongue 100 to horizontally expand and contract when the connecting shaft 114 rotates, and specifically, the structure principle is shown in Figures 5-6 The end face of the connecting shaft 114 facing the movable shaft 112 is provided with a slot 16 for inserting the movable shaft 112, the movable shaft 112 is provided with a stop portion 17, and the inner wall of the slot 16 is provided with a groove 18 corresponding to the stop portion 17; generally, the inner wall of the slot 16 and the groove 18 jointly form a non-circular structure, such as a square or a prism, to prevent the connecting shaft 114 and the movable shaft 112 from rotating relative to each other when connected, and in the disconnected state, the movable shaft 112 is located outside the slot 16 to prevent the lock cylinder 32 from being rotated illegally to drive the connecting shaft 114 to rotate and cause the door lock to be opened.

[0053] Preferably, the driving unit 113 comprises a horizontally arranged gear 11a and a micro motor 11b driving the gear 11a; the front end surface of the movable shaft 112 is axially provided with a concave cavity 1a, the movable shaft 112 is sleeved on the fixed shaft 111, and the outer side wall of the movable shaft 112 is circumferentially provided with annular teeth a1 matched with the gear 11a, the annular teeth a1 are provided in plurality and uniformly arranged along the axial direction of the movable shaft 112, and the movable shaft 112 can be in real-time meshing with the gear 11a during the axial movement of the movable shaft 112 through the annular teeth a1.

[0054] Preferably, the bottom surface of the slot 16 is coaxially provided with a guide shaft 19, the movable shaft 112 is provided with a guide groove 20 corresponding to the guide shaft 19, the distal end of the guide shaft 19 extends out of the slot 16 and is inserted into the guide groove 20, and the guide shaft 19 is sleeved with a spring 332, so that the movable shaft 112 is kept outside the slot 16 through the spring 332, and the spring 332 plays a role of resetting and guiding.

[0055] Preferably, the handle 2 comprises an L-shaped handle body 201 and a handle 2 base 202 arranged on the door lock body 1; the transverse end of the handle body 201 is longitudinally rotatably connected with the handle 2 base 202, the inside of the transverse end of the handle body 201 is provided with a mounting cavity 21, the lock cylinder mechanism 3, the light guide 8 and the clutch mechanism 11 are arranged in the mounting cavity 21, the front side wall of the mounting cavity 21 is provided with a key 9 hole corresponding to the key 9 hole, the handle 2 base 202 is provided with a avoiding hole corresponding to the clutch mechanism 11 and a through hole 22 for the light guide 8, that is, the rear end of the fixed shaft 111 extends out of the handle 2 base 202 and is connected with the bolt 100 in the door lock body 1, and the fixed shaft 111 is rotatably connected with the handle 2 base 202 through a shaft sleeve 23.

[0056] Preferably, the light guide 8 comprises a light guide block 81 opposite to the outlet of the channel 7 and a flexible light guide strip 82 connected with the light guide block 81; the free end of the flexible light guide strip 82 is connected with the light port of the detection module, the light guide block 81 is fixed on the lock cylinder housing 31, the side wall of the light guide block 81 facing the lock cylinder housing 31 is provided with a vertical surface 811 perpendicular to the light beam corresponding to the channel 7, and a plurality of reflecting surfaces 812 are arranged in the inside of the light guide block 81, so as to reflect the light into the inclined V-shaped groove 4 and reflect the light beam in the inclined state reflected from the V-shaped groove 4 into the axial direction of the lock cylinder housing 31, so as to achieve the purpose of compact light path structure.

[0057] The control method of the intelligent door lock device of the preferred embodiment of the present application is as shown in the method, which comprises the following steps: Figure 11

[0058] Step S10: The detection module 10 cooperates with the light guide 8 to emit a first light beam towards the window 5 and receive a second light beam reflected back, and generates an electrical signal according to the real-time second light beam;

[0059] ​Step S20: forming a difference between the detected electrical signal and the electrical signal before irradiation, and calculating the spectral reflectance of the reflecting surface 13 according to the size of the difference;

[0060] Step S30: judging whether the spectral reflectance is within a standard range, the standard range being uniquely bound to the key 9;

[0061] Step S40: when the spectral reflectance is within the standard range, controlling the clutch mechanism 11 to connect the lock cylinder 32 and the lock tongue 100, otherwise keeping the clutch mechanism 11 in a disconnected state.

[0062] It should be understood that, for those skilled in the art, improvements or changes can be made according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. A smart door lock device, the door lock comprising a lock body and a handle disposed on the lock body, characterized in that, The door lock also includes a lock cylinder mechanism disposed within the handle and used to drive the bolt. The lock cylinder mechanism includes a lock cylinder housing, a lock cylinder disposed within the lock cylinder housing, and a pin assembly radially movable on the inner cavity sidewall of the lock cylinder. The lock cylinder and the lock cylinder housing are locked together by the pin assembly. A V-shaped groove is provided on the outer sidewall of the lock cylinder. The two arms of the V-shaped groove are connected to the inner cavity through a window. The lock cylinder housing has two channels corresponding to the two arms of the V-shaped groove. A light guide is provided on the lock cylinder housing corresponding to the channels. The door lock also includes a key for inserting and rotating the lock cylinder, a detection module that emits a light beam toward the key in cooperation with the light guide and receives the returned light beam to measure the reflectivity of the key, a clutch mechanism connecting the lock cylinder and the bolt, and a controller for controlling the detection module and the clutch mechanism. The key has a reflective surface corresponding to the window to reflect the light beam. At least two reflective positions are arranged side by side on the reflective surface along the length of the key. The light reflectivity of one of the reflective positions is greater than or less than the light reflectivity of the other reflective position. The detection module includes LED beads and a reflectivity sensor that receives light reflected by the reflective positions. Both the LED beads and the reflectivity sensor are electrically connected to the controller. When the two reflective positions pass through the window in sequence, the reflectivity sensor generates first unlocking information and second unlocking information in sequence and sends them to the controller. The controller controls the clutch mechanism to connect the lock cylinder and the bolt according to the first unlocking information and the second unlocking information. The clutch mechanism includes a fixed shaft coaxially connected to the lock cylinder at one end facing the lock body, a movable shaft slidably connected to the fixed shaft, a drive unit for driving the movable shaft to reciprocate axially, and a connecting shaft coaxially disposed at one end of the movable shaft away from the lock cylinder; the connecting shaft is used to drive the bolt, and the end face of the connecting shaft facing the movable shaft is provided with a slot for the movable shaft to be inserted into, the movable shaft is provided with a stop part, and the inner wall of the slot is provided with a groove corresponding to the stop part; in the disengaged state, the movable shaft is located outside the slot.

2. The intelligent door lock device according to claim 1, characterized in that, The drive unit includes a horizontally arranged gear and a micro motor that drives the gear to rotate; the movable shaft has an axial cavity, the movable shaft is sleeved on the fixed shaft, and the outer side wall of the movable shaft is circumferentially provided with ring teeth that are adapted to the gear, and there are multiple ring teeth that are evenly arranged along the axial direction of the movable shaft.

3. The intelligent door lock device according to claim 2, characterized in that, A guide shaft is coaxially fixed on the bottom surface of the slot. A guide groove is provided on the movable shaft corresponding to the guide shaft. The end of the guide shaft extends out of the slot and is inserted into the guide groove. A spring is sleeved on the guide shaft. The movable shaft is kept outside the slot by the spring.

4. The intelligent door lock device according to claim 1, characterized in that, The handle includes an L-shaped handle body and a handle base disposed on the door lock body; the lateral end of the handle body is rotatably connected to the handle base in the longitudinal direction, and the lateral end of the handle body is provided with a mounting cavity, in which the lock cylinder mechanism, the light guide and the clutch mechanism are all disposed; a keyhole is provided on the front side wall of the mounting cavity, and the handle base is provided with an avoidance hole and a through hole for the light guide to pass through, corresponding to the clutch mechanism.

5. The intelligent door lock device according to claim 4, characterized in that, The light guide includes a light guide block facing the outlet of the channel and a flexible light guide strip connected to the light guide block; the light guide block is fixed on the lock cylinder housing.

6. A control method for an intelligent door lock, comprising the intelligent door lock device according to any one of claims 1-5, characterized in that, The method includes the following steps: The detection module, in conjunction with the light guide, illuminates a first beam of light toward the window and receives the beam of light reflected back from the first beam, thereby determining whether a key has been inserted into the lock cylinder. When a key is detected inserted into the lock cylinder, the detection module, in conjunction with the light guide, illuminates a second beam toward the window and receives the beam reflected back from the second beam, generating an electrical signal based on the beam reflected back from the second beam. The spectral reflectance of the reflective surface is calculated based on the difference between the detected electrical signal and the electrical signal before irradiation, and the magnitude of the difference. Determine whether the spectral reflectance is within the standard range. The standard range is uniquely bound to the key. When the spectral reflectance is within the standard range, control the clutch mechanism to connect the lock cylinder and the lock tongue. Otherwise, keep the clutch mechanism in the disconnected state.

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