Access Control System

Abstract

The present application relates to an access control system, including a mobile terminal device and a lock core, the lock core includes a lock core body, a wireless device, a control device and a limiter, the control device, the wireless device and the limiter are all arranged on the lock core body, the mobile terminal device communicates wirelessly with the wireless device, and the wireless device and the limiter are both connected to the control device. The user can send instructions to the control device through the mobile terminal device, and the mobile terminal device sends the received unlocking instruction to the wireless device after the received user information passes the identity authentication, and then the control device generates a control instruction to the limiter according to the unlocking instruction, changes the position of the limiter, and thus controls the locking state of the lock core body. When the lock core body is in the unlocking state, the user can open the door smoothly, and the access control device can be unlocked without carrying a mechanical key, avoiding the situation where the user forgets to bring the key and cannot enter the door, and also ensures the safety of unlocking, and improves the reliability of the access control system.

Description

Technical Field

[0001] The present application relates to the technical field of access control equipment, and in particular to an access control system. Background Art

[0002] With the development of society, people's awareness of privacy and property protection has been greatly improved. Door locks, as a tool that can isolate people's private space and public space, have become a necessity for every household.

[0003] Most traditional door locks use mechanical lock cores. Different lock core structures correspond to mechanical keys of different shapes. Users insert the matching mechanical key into the lock core to unlock the lock core and complete the door opening operation. However, this type of lock core can only be opened by the key. When the user forgets to bring the key, the door cannot be opened, which is inconvenient to use. Summary of the invention

[0004] Based on this, it is necessary to provide a door access control system to address the problem that traditional lock cores are inconvenient to use.

[0005] A door access control system, comprising a mobile terminal device and a lock core, wherein the lock core comprises a lock core body, a wireless device, a control device and a limiter, wherein the control device, the wireless device and the limiter are all arranged on the lock core body, the mobile terminal device communicates wirelessly with the wireless device, and the wireless device and the limiter are both connected to the control device;

[0006] After the received user information passes the identity authentication, the mobile terminal device sends the received unlocking instruction to the wireless device, and the wireless device forwards the unlocking instruction to the control device. The control device generates a control instruction to the limit member according to the unlocking instruction, and the limit member changes its position after receiving the control instruction to put the lock core body in an unlocked state.

[0007] The above-mentioned access control system includes a mobile terminal device and a lock core. The lock core includes a lock core body, a wireless device, a control device and a limit piece. The control device, the wireless device and the limit piece are all arranged on the lock core body. The mobile terminal device communicates wirelessly with the wireless device. The wireless device and the limit piece are both connected to the control device. After the received user information is authenticated, the mobile terminal device sends the received unlocking command to the wireless device. The wireless device forwards the unlocking command to the control device. The control device generates a control command to the limit piece according to the unlocking command. After receiving the control command, the limit piece changes its position to make the lock core body in an unlocked state. The user can send instructions to the control device through the mobile terminal device. After the received user information is authenticated, the mobile terminal device sends the received unlocking instruction to the wireless device, which can improve the security of unlocking. The control device then generates a control instruction to the limit member according to the unlocking instruction, changes the position of the limit member, and thus controls the locking state of the lock cylinder body. When the lock cylinder body is in the unlocked state, the user can open the door smoothly, and the access control device can be unlocked without carrying a mechanical key, which avoids the situation where the user forgets to bring the key and cannot enter the door. It also ensures the safety of unlocking and improves the reliability of the access control system.

[0008] In one embodiment, the identity authentication includes face recognition authentication.

[0009] In one embodiment, the limiting member includes an electromagnetic member, a motor rotating member, a latch and an elastic element. A hollow cavity is opened in the latch. The motor rotating member and the elastic element are both arranged in the hollow cavity. The electromagnetic member is fixedly connected to the motor rotating member. The motor rotating member is arranged in contact with one side of the elastic element, and the other side of the elastic element is arranged in contact with the latch. The electromagnetic member is electrically connected to the control device, and the latch is arranged on the lock core body.

[0010] In one embodiment, the electromagnetic component is a motor or an electromagnet.

[0011] In one embodiment, the lock core body includes a lock core, a clutch, a pull and a lock shaft which are axially arranged in sequence, and also includes a lock shell, the lock core and the lock shaft are telescopically connected to the two opposite ends of the clutch, the lock core, the clutch, the pull, the lock shaft, the limiter and the control device are all arranged in the lock shell, the wireless device is arranged in the lock shell, a keyhole is arranged in the lock core, the limiter is arranged in the lock shaft and is connected to the lock shell.

[0012] In one of the embodiments, the lock core body further includes a knob, which is axially arranged on a side of the lock core away from the pull, and a through hole penetrating the keyhole in the lock core is arranged in the knob.

[0013] In one embodiment, the access control system further comprises an early warning device arranged on the lock shaft, and when a technical tool is inserted into the keyhole, the early warning device sends out an alarm signal after contacting the clutch component or the lock core.

[0014] In one embodiment, the early warning device includes a detection device and an alarm component. The detection device is arranged on the lock shaft. When a technical tool is inserted into the keyhole, the detection device contacts the clutch or the lock core. The alarm component is connected to the detection device. The alarm component sends an alarm signal when the detection device contacts the clutch or the lock core.

[0015] In one embodiment, the detection device is a probe, and the probe is disposed in the locking shaft.

[0016] In one embodiment, the wireless device is a Bluetooth device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of an access control system in one embodiment;

[0018] Figure 2 is a structural diagram of a lock core in one embodiment;

[0019] Figure 3 A structural diagram of a position limiting member in an embodiment;

[0020] Figure 4 A schematic diagram of the position of the limiter when the lock core body is in a locked state in one embodiment;

[0021] Figure 5 A schematic diagram of the position of the limiter when the lock core body is in an unlocked state in one embodiment;

[0022] Figure 6 The figure is a schematic diagram of the working process of the access control system in one embodiment. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of this application more clear, the following is a more comprehensive description of this application through embodiments and in combination with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0024] In one embodiment, see Figure 1 and Figure 2, provides an access control system, including a mobile terminal device 100 and a lock core 200, the lock core 200 includes a lock core body, a wireless device 210, a control device 26 and a limiter 25, the control device 26, the wireless device 210 and the limiter 25 are all arranged on the lock core body, the mobile terminal device 100 communicates wirelessly with the wireless device 210, the wireless device 210 and the limiter 25 are both connected to the control device 26, after the received user information of the mobile terminal device 100 passes the identity authentication, the mobile terminal device 100 sends the received unlocking command to the wireless device 210, the wireless device 210 forwards the unlocking command to the control device 26, the control device 26 generates a control command to the limiter 25 according to the unlocking command, and the limiter 25 changes its position after receiving the control command to make the lock core body in an unlocked state. The user can send instructions to the control device 26 through the mobile terminal device 100. After the received user information passes the identity authentication, the mobile terminal device 100 sends the received unlocking instruction to the wireless device 210, which can improve the security of unlocking. Then the control device 26 generates a control instruction to the limit member 25 according to the unlocking instruction, changes the position of the limit member 25, and thus controls the locking state of the lock core body. When the lock core body is in the unlocked state, the user can open the door smoothly, and the access control device can be unlocked without carrying the mechanical key 21, which avoids the situation where the user forgets to bring the key 21 and cannot enter the door, and also ensures the safety of unlocking and improves the reliability of the access control system.

[0025] Specifically, the type of mobile terminal device 100 is not limited, for example, it can be a mobile phone, a tablet or a laptop computer. The mobile terminal device 100 first performs identity authentication on the received user information to determine whether the current operator of the device is a legitimate user, for example, whether the device owner. If the user information passes the identity authentication, it is considered that the current user can be allowed to operate the mobile terminal device 100. The way to perform identity authentication is not unique. For example, the user can enter a password in the mobile terminal device 100. When the password entered by the user matches the pre-stored password, the mobile terminal device 100 determines that the identity authentication is passed and the current user operation is legal. After the user information received by the mobile terminal device 100 passes the identity authentication, the received unlocking command can be sent to the lock cylinder 200 to control the lock cylinder 200 to be in an unlocked state.

[0026] In an extensible manner, when the wireless device 210 of the lock core 200 receives a signal from the mobile terminal device 100, it first determines whether the mobile terminal device 100 is a trusted device of the lock core 200. If so, the wireless device 210 normally receives the signal from the mobile terminal device 100. If not, it is considered that the current mobile terminal device 100 is not authorized and cannot be allowed to control the lock core 200, and the wireless device 210 does not receive the signal sent by the mobile terminal device 100. The method of verifying whether the mobile terminal device 100 is a trusted device of the lock core 200 is not unique. For example, the user can use the mobile terminal device 100 to scan the QR code on the lock core 200, etc., to bind the account of the unlocking software in the mobile terminal device 100 to the current lock core 200, and then directly use the account that has been bound to the lock core 200 to log in to the unlocking software, and send instructions to the lock core 200 through the unlocking software. Alternatively, the mobile terminal device 100 can also establish a connection with the lock core 200 via Bluetooth or other means. After the connection is successfully established, the lock core 200 will save the address information of the connected mobile terminal device 100. The next time an instruction is sent to the lock core 200 via the mobile terminal device 100, the lock core 200 verifies the address information of the mobile terminal device 100 that sends the instruction. If the address information is in the stored address information library, it is considered that the current mobile terminal device 100 is a trusted device and can receive information from the mobile terminal device 100 normally.

[0027] After the received user information passes the identity authentication, the mobile terminal device 100 sends the received unlocking instruction to the wireless device 210, and the wireless device 210 forwards the unlocking instruction to the control device 26. The control device 26 generates a control instruction to the limiter 25 according to the unlocking instruction. After receiving the control instruction, the limiter 25 changes its position to put the lock core body in an unlocked state. The locked state of the lock core body refers to the locked state of some or all components of the lock core body. The change of the position of the limiter 25 can limit or cancel the limit of the lock core body. When the lock core body is limited, some or all components of the lock core body are locked to each other and cannot be unlocked. When the limiter 25 receives the control instruction generated by the control device 26 according to the unlocking instruction, it can cancel the limit of the lock core body by changing its own position, so that the lock core body is in an unlocked state. At this time, the components of the lock core body can be moved as needed, which is convenient for subsequent unlocking operations.

[0028] The control device 26 is electrically connected to the limiter 25. The control device 26 generates a control command based on the unlock command received and sends it to the limiter 25. The limiter 25 is set on the lock core body. The specific setting position of the limiter 25 will be different according to the structure of the lock core body. After receiving the control command, the limiter 25 can adjust its own position according to the received control command, specifically adjust its relative position with the lock core body. For example, the limiter 25 is set in the through hole opened in the lock core body. When the control command received by the limiter 25 is an unlock command, the limiter 25 pops out of the through hole to put the lock core body in an unlocked state. The user can unlock the lock through subsequent operations, such as turning the knob 22 to unlock the lock. In an extensible manner, the user can also send a locking command to the wireless device 210 through the mobile terminal device 100, and the wireless device 210 forwards the locking command to the control device 26. The control device 26 generates a control command to the limiter 25 according to the locking command. After receiving the control command, the limiter 25 changes its position, and the limiter 25 is inserted into the through hole of the lock core body, so that the lock core body is in a locked state and the user cannot unlock it. It can be understood that in other embodiments, the lock core body can also be other structures, and correspondingly, the setting relationship between the limiter 25 and the lock core body can also be different, as long as the change of the setting position of the limiter 25 can realize the switching of the unlocking and locking states of the lock core body.

[0029] After receiving the instruction, the control device 26 analyzes the received instruction, and then sends a control instruction corresponding to the function of the received instruction to the limiter 25, so that the limiter 25 can change its position to make the lock core body unlocked, thereby realizing the unlocking of the non-mechanical key 21. Taking the mobile terminal device 100 as a mobile phone as an example, the mobile phone is installed with unlocking software. The user first completes face recognition on the mobile phone software. If the face recognition is successful, the mobile phone software will send an unlocking signal to the lock core 200, the lock core 200 is unlocked, and the user successfully unlocks. This is a linkage control process, which requires both face recognition and matching of the mobile phone account with the smart lock core 200, and has high security.

[0030] In one embodiment, identity authentication includes face recognition authentication. The identity authentication method is not unique. In this embodiment, taking identity authentication including face recognition authentication as an example, the specific process of face recognition authentication is as follows: the user terminal device includes a camera and a face recognition chip, the camera is connected to the face recognition chip, the camera collects face information and sends it to the face recognition chip, the face recognition chip compares the received face information with the preset verification information, if the match is large, it is considered that the current face information meets the requirements, and the user corresponding to the current face information can successfully unlock the mobile terminal device 100. Face recognition authentication has a high security factor and can improve the data security of the mobile terminal device 100.

[0031] In one embodiment, see Figure 3 The limiting member 25 includes an electromagnetic member 251, a motor rotating member 252, a latch 253 and an elastic element 254. A hollow cavity is opened in the latch 253. The motor rotating member 252 and the elastic element 254 are both arranged in the hollow cavity. The electromagnetic member 251 is fixedly connected to the motor rotating member 252. The motor rotating member 252 is arranged in contact with one side of the elastic element 254, and the other side of the elastic element 254 is arranged in contact with the latch 253. The electromagnetic member 251 is electrically connected to the control device 26, and the latch 253 is arranged on the lock core body.

[0032] Specifically, the structure of the limiter 25 is not unique. In this embodiment, a hollow cavity is provided in the latch 253, and the motor rotating member 252 and the elastic element 254 are both arranged in the hollow cavity, which can reduce the volume. The electromagnetic member 251 is fixedly connected to the motor rotating member 252. The movement of the electromagnetic member 251 can drive the motor to move. The motor rotating member 252 is arranged in contact with one side of the elastic element 254, and the other side of the elastic element 254 is arranged in contact with the latch 253. The deformation of the elastic element 254 will change the position of the latch 253. The electromagnetic member 251 is electrically connected to the control device 26, and the latch 253 is arranged on the lock core body. The control device 26 sends a control command to the electromagnetic member 251. After receiving the control command, the electromagnetic member 251 starts to move. The direction of movement is different according to the received control command. The electromagnetic member 251 is fixedly connected to the motor rotating member 252. The electromagnetic member 251 transmits the movement to the motor rotating member 252. The motor rotating member 252 is arranged in contact with one side of the elastic element 254. The movement of the motor rotating member 252 will drive the elastic element 254 to compress or stretch, thereby driving the latch 253 arranged in contact with the other side of the elastic element 254 to move in the deformation direction of the elastic element 254, realizing the change of the position of the latch 253, so that the lock core body adjusts the unlocking state or the locking state. It can be understood that in other embodiments, the limit member 25 can also be other structures, as long as those skilled in the art believe that it can be achieved.

[0033] In one embodiment, the electromagnetic component 251 is a motor or an electromagnet. The type of the electromagnetic component 251 is not unique, as long as it can produce corresponding movement according to the received control instruction. When the electromagnetic component 251 is a motor, the motor is connected to the control device 26, and can receive the control instruction transmitted by the control device 26, and rotate forward or reverse according to the received control instruction. The motor is fixedly connected to the motor rotating member 252, and when the motor rotates forward or reverses, it drives the motor rotating member 252 to move. Specifically, the connection method between the motor and the motor rotating member 252 is not unique. In this embodiment, the motor and the motor rotating member 252 can be connected into one body by riveting, so that the connection strength between the motor and the motor rotating member 252 is good, the use cost is low, and it is easy to use. It can be understood that in other embodiments, the motor and the motor rotating member 252 can also adopt other connection methods, as long as those skilled in the art believe that it can be achieved. When the electromagnetic component 251 is an electromagnet, the electromagnet can induce a magnetic field according to the received electrical signal, and can induce magnetic fields in different directions according to different received control instructions, thereby driving the motor rotating component 252 connected to the electromagnet to move in different directions. The motor rotating component 252 is connected to the elastic element 254, and the movement of the motor rotating component 252 in different directions will drive the elastic element 254 to compress or stretch, thereby driving the bolt 253 connected to the elastic element 254 to move in the deformation direction of the elastic element 254, realizing the change of the position of the bolt 253, so that the lock core body adjusts the unlocking state or the locking state. It can be understood that in other embodiments, the electromagnetic component 251 can also be other types of devices, as long as those skilled in the art believe that it can be implemented.

[0034] In one embodiment, see Figure 2 The lock core body includes a lock core 23, a clutch 211, a pull 213 and a lock shaft 24 which are axially arranged in sequence, and also includes a lock shell 27. The lock core 23 and the lock shaft 24 are telescopically connected to the two opposite ends of the clutch 211 respectively. The lock core 23, the clutch 211, the pull 213, the lock shaft 24, the limiter 25 and the control device 26 are all arranged in the lock shell 27. The wireless device 210 is arranged in the lock shell 27. A keyhole is arranged in the lock core 23. The limiter 25 is arranged in the lock shaft 24 and is connected to the lock shell 27.

[0035] Specifically, generally speaking, one side of the lock core 200 is connected to the indoor area, and the other side is connected to the outdoor area. Taking the side of the lock core 200 connected to the indoor area as the indoor side and the side connected to the outdoor area as the outdoor side as an example, the lock core 23, the clutch 211, the pull 213 and the lock shaft 24 are arranged in sequence from the outdoor side to the indoor side. When there is no key 21 inserted into the keyhole on the outdoor side, the lock core 23 and the lock shaft 24 are integrated. At this time, the lock core 23, the pull 213 and the lock shaft 24 can be regarded as a whole. If the lock core 23 rotates, the corresponding other parts will rotate. When the key 21 is inserted into the keyhole and rotated, under the action of the clutch 211, the key 21 pushes the lock shaft 24 forward toward the indoor direction, and the lock shaft 24 is separated from other parts (i.e., the lock core 23 and the pull 213). There are blades in the lock core 23. When the inserted key 21 matches the blades in the lock core 23, the key 21 can rotate and push the lock shaft 24 to separate from other parts.

[0036] The control device 26 can also send control instructions according to the received instructions, and control the smart lock cylinder 200 to unlock or lock by sending control instructions. For example, it can generate an instruction with an unlocking function to the limiter 25 according to the received unlocking instruction. Specifically, the limiter 25 connects the lock shell 27 and the lock shaft 24, and the lock shaft 24 is provided with a through hole. When the control device 26 sends a control instruction corresponding to the unlocking instruction to the limiter 25, the limiter 25 pops out of the through hole to unlock the lock shaft 24, unlocks the lock shell 27 and the lock shaft 24, and puts the lock cylinder body in an unlocked state. The mobile terminal device 100 can switch the locking state of the lock cylinder body by controlling the position of the limiter 25, which is convenient to use.

[0037] In one embodiment, see Figure 2The lock core body also includes a knob 22, which is axially arranged on the side of the lock core 23 away from the pull 213, and a through hole is arranged in the knob 22, which penetrates the key hole in the lock core 23. The knob 22 is arranged on the outdoor side of the lock core 200 and can be used to assist in opening the door. Specifically, when opening the door, it is first necessary to insert the matching mechanical key 21 into the through hole of the knob 22, and the key 21 enters the key hole in the lock core 23 through the through hole of the knob 22, and after being paired with the blade in the lock core 23, the user turns the key 21, so that the front part of the lock core 200 (including the knob 22, the lock core 23 and the pull 213) is in a separated state from the lock shaft 24. If the limiter 25 is also in a state of canceling the limit on the lock core body, then twisting the knob 22 can rotate the lock core 23 to drive the pull 213, and the pull 213 then drives the lock tongue to unlock. By setting the knob 22, when the lock core body is in the state of canceling the limit, and the matching mechanical key 21 is inserted into the lock core 23 to unlock, the user can assist in opening the door by twisting the knob 22, thereby improving the convenience of opening the door. In an extensible manner, if the locking state of the lock core body is determined only by the position of the limiter 25, when the limiter 25 cancels the limit on the lock core body, for example, when the limiter 25 pops out of the multi-lock core body, the user can open the door by turning the knob 22, which is convenient to use.

[0038] In one embodiment, see Figure 2 The access control system further includes an early warning device 29 disposed on the lock shaft 24. When a technical tool is inserted into the keyhole, the early warning device 29 contacts the clutch 211 or the lock core 23 and issues an alarm signal. The clutch 211 is movable relative to the lock core 23. The movement direction of the clutch 211 matches the insertion direction of the technical tool. That is, when the technical tool or key 21 is inserted into the keyhole, the clutch 211 moves toward the lock shaft 24. When it touches the early warning device 29 on the lock shaft 24, it conducts with the early warning device 29. At this time, the early warning device 29 issues an alarm signal and issues a prompt message that an object is inserted into the lock core 200. The lock core 23 can also move toward the direction close to the lock shaft 24. When the technical tool or key 21 is inserted into the keyhole, the lock core 23 moves toward the lock shaft 24. When the lock core 23 touches the early warning device 29, it conducts with the early warning device 29. At this time, the early warning device 29 issues an alarm signal and issues a prompt message that an object is inserted into the lock core 200.

[0039] The specific setting position of the early warning device 29 is not unique. In the present embodiment, the early warning device 29 can be set at the center line position of the lock shaft 24. When a technical tool or key 21 is inserted into the keyhole, the key 21 or the technical tool pushes the lock core 23 or the clutch 211 toward the lock shaft 24. Since the center lines of the lock core 23 and the lock shaft 24 are on the same straight line, when the early warning device 29 is set at the center line position of the lock shaft 24, the approach of the lock core 23 can be more sensitively monitored, thereby improving the accuracy of the early warning and further improving the safety performance of the access control system.

[0040] In one embodiment, the early warning device 29 includes a detection device and an alarm component. The detection device is arranged on the lock shaft 24. When a technical tool is inserted into the keyhole, the detection device contacts the clutch 211 or the lock core 23. The alarm component is connected to the detection device. When the detection device contacts the clutch 211 or the lock core 23, the alarm component sends an alarm signal.

[0041] Specifically, the structure of the early warning device 29 is not unique. In this embodiment, the early warning device 29 includes a detection device and an alarm component. The alarm component can monitor the contact between the detection device and other devices. When a key 21 or a technical tool is inserted into the keyhole, the key 21 or the technical tool will push the lock core 23 and the clutch 211 to move forward toward the inner side of the room, so that the lock core 23 or the clutch 211 contacts the detection device. Generally speaking, the clutch 211, the lock core 23 and the detection device are all made of conductive materials. When the clutch 211 or the lock core 23 contacts the detection device, the clutch 211 or the lock core 23 is connected to the detection device. When the clutch 211 or the lock core 23 is connected to the detection device, the alarm component sends an alarm signal. When the early warning device 29 includes a detection device and an alarm component, the detection device can detect whether the lock core 23 or the clutch 211 is close to and in contact with it. When the lock core 23 or the clutch 211 contacts the detection device, it means that a key 21 or a technical tool has been inserted into the keyhole and has pushed the lock core 23 and the clutch 211 forward. The alarm component can send an alarm signal when the lock core 23 or the clutch 211 contacts the detection device, which serves to warn criminals and remind the owner of the door lock. The detection device and the alarm component cooperate with each other to improve the security performance of the access control system. It can be understood that in other embodiments, the early warning device 29 can also include other structures as long as those skilled in the art believe that it can be implemented.

[0042] In one embodiment, the detection device is a probe, which is disposed in the lock shaft 24. The probe as a detection device can detect whether the lock core 23 or the clutch 211 is close, and when the lock core 23 or the clutch 211 is close and contacts the probe, the alarm component sends an alarm signal.

[0043] Specifically, the setting position of the probe is not unique. In this embodiment, a hollow cavity is provided in the lock shaft 24, and the probe is provided in the hollow cavity, which can not only protect the probe, but also reduce the volume of the lock core 200. Furthermore, the setting direction of the probe is not unique. For example, the height direction of the probe is perpendicular to the insertion or withdrawal direction of the technical tool or key 21. When the technical tool or key 21 pushes the lock core 23 or the clutch 211 close to the lock shaft 24, the probe can detect the approach of the lock core 23 or the clutch 211 on the side close to the lock core 23 in the entire height direction, making the detection of the insertion of the key 21 or the technical tool more sensitive, facilitating the alarm component to send out an alarm signal in time, and improving the working performance of the lock core 200. In an extensible manner, the material of the probe is not unique. For example, the probe can be a copper probe. Copper has high conductivity, long service life, and low cost of use, which can reduce the cost of use of the lock core 200. The shape of the probe is not unique. For example, the probe can be conical, and the bottom surface of the cone is arranged in the locking shaft 24, with a large area and good fixing performance. The conical probe occupies a small volume and has sensitive detection. It is understood that in other embodiments, the setting position, material or shape of the probe can also be other, as long as the technicians in this field think it can be realized.

[0044] In one embodiment, the wireless device 210 is a Bluetooth device. The type of wireless device 210 is not unique. In one embodiment, the wireless device 210 is a Bluetooth component. When the wireless device 210 is a Bluetooth component, the user can use the Bluetooth function of the mobile terminal device 100 such as a mobile phone or a tablet to communicate with the Bluetooth device of the lock cylinder 200. Bluetooth devices are widely used. When a Bluetooth device is used as the wireless device 210 of the lock cylinder 200, a wide variety of external devices can be used to establish communication, which expands the scope of use of the lock cylinder 200.

[0045] In order to better understand the above embodiment, a detailed explanation is given below in conjunction with a specific embodiment. In one embodiment, see Figure 1-Figure 2The mobile terminal device 100 is a mobile phone, and the lock core 200 includes a limiter 25, a control device 26, a lock core body, a battery and a wireless device 210. The control device 26 is a main board, and the battery is a rechargeable lithium battery. The lock core body includes a lock core 23, a clutch 211, a pull 213 and a lock shaft 24 arranged in sequence, and also includes a lock shell 27. The lock core 23 and the lock shaft 24 are respectively connected to the opposite ends of the clutch 211 in a telescopic manner. The lock core 23, the clutch 211, the pull 213, the lock shaft 24, the limiter 25 and the control device 26 are all arranged in the lock shell 27. The wireless device 210 is arranged in the lock shell 27. A keyhole is arranged in the lock core 23. The limiter 25 is arranged in the lock shaft 24 and connected to the lock shell 27. The lock core body further includes a knob 22 , which is axially arranged on a side of the lock core 23 away from the pull 213 , and a through hole penetrating the keyhole in the lock core 23 is arranged in the knob 22 .

[0046] See also Figure 3-Figure 5 The limiter 25 is a mechanical part that can be controlled electronically, and its appearance and function are similar to the electronic latch 253. The limiter 25 includes a micro motor or an electromagnet, a motor rotor 252, a latch 253 and a spring. After the mainboard receives the control signal, it drives the motor to rotate forward or reverse, and the motor rotor 252 is riveted to the motor as a whole. The motor rotor 252 drives the spring to compress and release, and the latch 253 moves up and down along the motor axis under the action of the compression and release of the spring. The latch 253 moves up and down to achieve locking between the lock housing 27 and the lock shaft 24 (see Figure 4 ) and release (see Figure 5 ) lock, thereby realizing the functions of unlocking and locking.

[0047] The access control system is controlled by mobile phone software (APP or applet) on terminal devices such as mobile phones, so as to achieve the function of electronic key intelligently controlling the lock cylinder 200 to open. The lock cylinder 200 is connected to the mobile terminal device 100. If the communication and identity verification are successful, the mobile terminal device 100 can send instructions to the wireless device 210 of the lock cylinder 200. The wireless device 210 forwards the instructions sent by the mobile terminal device 100 to the circuit board of the lock cylinder 200, that is, the control device 26. The circuit board of the lock cylinder 200 can control the limiter 25, and the limiter 25 is unlocked from the lock shaft 24. The clutch 211 connects the front and rear of the lock cylinder 200, and the door can be opened by turning the knob 22.

[0048] When a technical opening tool is inserted into the lock cylinder 200, the clutch 211 will be pushed forward to trigger the warning device 29, the limiter 25 is in a limited state, the lock cylinder 23 and the lock shell 27 remain locked, and the wrong key 21 and the knob 22 cannot turn the lock cylinder 23 to open the door. The warning device 29 is connected to the circuit board, and can transmit the warning signal to the control device 26, and can send the warning signal to the mobile terminal device 100 connected to the lock cylinder 200 through the wireless device 210, so as to realize remote alarm, thereby achieving the purpose of strengthening the anti-technical opening access control system.

[0049] When wireless unlocking, please refer to Figure 6 The user first completes face recognition on the mobile phone software. If the face recognition is successful, the mobile phone software will send an unlocking signal to the lock core 200, so that the lock core 200 is in an unlocked state, and the user successfully unlocks the lock. This is a linkage control process, which requires both face recognition and matching of the mobile phone account with the lock core 200, and has high security.

[0050] The above-mentioned access control system includes a mobile terminal device 100 and a lock core 200. The lock core 200 includes a lock core body, a wireless device 210, a control device 26 and a limiter 25. The control device 26, the wireless device 210 and the limiter 25 are all arranged on the lock core body. The mobile terminal device 100 is connected to the wireless device 210. The wireless device 210 and the limiter 25 are both connected to the control device 26. After the received user information of the mobile terminal device 100 passes the identity authentication, the received unlocking command is sent to the wireless device 210. The wireless device 210 forwards the unlocking command to the control device 26. The control device 26 generates a control command to the limiter 25 according to the unlocking command. After receiving the control command, the limiter 25 changes its position to make the lock core body in an unlocked state. The user can send instructions to the control device 26 through the mobile terminal device 100. After the received user information passes the identity authentication, the mobile terminal device 100 sends the received unlocking instruction to the wireless device 210, which can improve the security of unlocking. Then the control device 26 generates a control instruction to the limit member 25 according to the unlocking instruction, changes the position of the limit member 25, and thus controls the locking state of the lock core body. When the lock core body is in the unlocked state, the user can open the door smoothly, and the access control device can be unlocked without carrying the mechanical key 21, which avoids the situation where the user forgets to bring the key 21 and cannot enter the door, and also ensures the safety of unlocking and improves the reliability of the access control system.

[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A door access control system, characterized in that: The invention comprises a mobile terminal device and a lock core, wherein the lock core comprises a lock core body, a wireless device, a control device and a limiter, wherein the control device, the wireless device and the limiter are all arranged on the lock core body, the mobile terminal device communicates wirelessly with the wireless device, and the wireless device and the limiter are both connected to the control device; After the received user information passes identity authentication, the mobile terminal device sends the received unlocking instruction to the wireless device. When receiving the unlocking instruction from the mobile terminal device, the wireless device determines whether the mobile terminal device is a trusted device. If so, the unlocking instruction is forwarded to the control device; if not, the signal sent by the mobile terminal device is not received. The control device generates a control instruction to the limiter according to the unlocking instruction, and the limiter changes its position after receiving the control instruction so that the lock core body is in an unlocking state; The lock core body comprises a lock core, a clutch, a pull and a lock shaft which are axially arranged in sequence, and also comprises a lock housing, wherein the lock core and the lock shaft are respectively telescopically connected to the two opposite ends of the clutch, the lock core, the clutch, the pull, the lock shaft, the limiter and the control device are all arranged in the lock housing, the wireless device is arranged in the lock housing, the limiter is arranged in the lock shaft and is connected to the lock housing; a keyhole is arranged in the lock core, and under the action of the clutch, when no key is inserted into the keyhole, the lock core, the lock shaft and the pull are integrated into one; when a key is inserted into the keyhole, the lock shaft is separated from the lock core and the pull; The access control system also includes an early warning device arranged on the lock shaft, and the early warning device includes a detection device and an alarm component. The detection device is arranged on the lock shaft, and when a technical tool is inserted into the keyhole, the detection device contacts the clutch or the lock core; the alarm component is connected to the detection device, and the alarm component sends an alarm signal when the detection device contacts the clutch or the lock core; the detection device is a probe.

2. The access control system according to claim 1, characterized in that: The identity authentication includes face recognition authentication.

3. The access control system according to claim 2, characterized in that: The user terminal device includes a camera and a face recognition chip. The camera is connected to the face recognition chip. The camera collects face information and sends it to the face recognition chip. The face recognition chip compares the received face information with preset verification information and determines whether the current face information meets the requirements based on the matching degree.

4. The access control system according to claim 1, characterized in that: The limiting component includes an electromagnetic component, a motor rotating component, a latch and an elastic element. A hollow cavity is opened in the latch. The motor rotating component and the elastic element are both arranged in the hollow cavity. The electromagnetic component is fixedly connected to the motor rotating component. The motor rotating component is arranged in contact with one side of the elastic element, and the other side of the elastic element is arranged in contact with the latch. The electromagnetic component is electrically connected to the control device, and the latch is arranged on the lock core body.

5. The access control system according to claim 4, characterized in that: The electromagnetic component is a motor or an electromagnet.

6. The access control system according to claim 1, characterized in that: The lock core body also includes a knob, which is axially arranged on a side of the lock core away from the pull-pull position, and a through hole penetrating the keyhole in the lock core is arranged in the knob.

7. The access control system according to claim 1, characterized in that: The probe is a copper probe.

8. The access control system according to claim 7, characterized in that: A hollow cavity is provided in the locking shaft, and the probe is arranged in the hollow cavity.

9. The access control system according to claim 1, characterized in that: The wireless device is a Bluetooth device.

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