Intelligent safety lock system based on NFC

Abstract

The invention relates to the technical field of intelligent safety locks, in particular to an intelligent safety lock system based on NFC (Near Field Communication), which comprises a lock body and a lock body shell made of a high-strength corrosion-resistant metal material; the NFC recognition module is integrated in the lock cylinder, works based on the electromagnetic induction principle and comprises an NFC antenna and a signal processing chip; the control unit is connected with the NFC identification module, a storage chip is arranged in the control unit, and authorized NFC label information and corresponding operation authority are pre-stored in the storage chip; the wireless communication module is connected with a management system of the wind power plant and transmits operation information in real time; the power supply module adopts a rechargeable lithium battery and is provided with a low-power-consumption circuit design; the emergency mechanical unlocking interface is used for unlocking in an emergency, accurate authority management of key parts such as a wind power plant equipment cabin is realized through an intelligent safety lock system based on NFC, unauthorized access and operation are prevented, and the safety of a work site is remarkably improved; the intelligent lock system reduces the burden of carrying a plurality of keys by field staff.

Description

Technical Field

[0001] The present invention relates to the technical field of smart safety locks, and in particular to a smart safety lock system based on NFC. Background Art

[0002] With the development of the power industry, the safety requirements of the work site are becoming more and more stringent. In order to ensure that the work site can be carried out safely, new measures such as the work ticket system, the work contact system, and the work ticket double issuer system have emerged in an endless stream, which has also greatly reduced the occurrence of safety accidents at the management level; however, with the increase in safety measures, the workload of on-site staff has also increased a lot; for example, a person in a power plant illegally opened the door of the high-voltage room, resulting in the death of a person by electric shock. Such an accident happened. In combination with the power industry's "one accident, ten thousand educations", the site began to rectify the locks for this accident and adopted a management system of one door and one lock. In other words, now a box transformer, high-voltage side, low-voltage side, and secondary side require a total of three keys and three locks. If there are many devices on site, 200 box transformers will require 600 keys. When carrying out the switching operation, not only the three keys of the box transformer are required, but also the keys of the fan and the door-type rod, that is, five keys. If the key is lost during the process, it will also cause certain difficulties in the work on site.

[0003] In a wind power plant, numerous equipment compartments (such as wind turbine compartments, distribution cabinets, etc.) require effective security protection. Traditional mechanical locks have problems such as easy loss and duplication of keys and inconvenient management, and it is difficult to achieve accurate recording of personnel operations and authority management. Although some electronic locks have solved these problems to a certain extent, they still have shortcomings such as signal interference and low recognition accuracy in the complex environment of wind power plants. At the same time, there is a lack of integration with the personnel management system of wind power plants. Summary of the invention

[0004] In view of the above-mentioned existing traditional mechanical locks have the problems of easy loss and duplication of keys and inconvenient management, and it is difficult to achieve accurate recording of personnel operations and authority management, although some electronic locks have solved these problems to a certain extent, they still have shortcomings such as signal interference and low recognition accuracy in the complex environment of wind power plants. At the same time, there are deficiencies in the integration with the personnel management system of wind power plants. The present invention is proposed.

[0005] Therefore, the object of the present invention is to provide an intelligent safety lock system based on NFC.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an NFC-based smart security lock system, comprising:

[0007] Lock body, the lock body shell is made of high-strength, corrosion-resistant metal material;

[0008] The NFC identification module integrated into the lock core works based on the principle of electromagnetic induction and includes an NFC antenna and a signal processing chip.

[0009] A control unit, connected to the NFC identification module, having a built-in storage chip, wherein the storage chip pre-stores authorized NFC tag information and corresponding operation permissions;

[0010] A wireless communication module, connected to the wind farm management system, transmits operational information in real time;

[0011] A power module that uses a rechargeable lithium battery and is equipped with a low-power circuit design; and,

[0012] Emergency mechanical unlocking interface, used for unlocking in emergency situations.

[0013] As a preferred solution of the NFC-based smart safety lock system of the present invention, the control unit can implement hierarchical authorization operations to achieve real-time and effective control of people, things and equipment in all aspects of operation and inspection operations. The control unit uses a role-based access control algorithm, which can dynamically adjust the permission information in the storage chip to respond to changes in wind farm safety management policies.

[0014] As a preferred solution of the NFC-based smart security lock system of the present invention, the NFC identification module can communicate with the user's NFC device to verify the user's identity and authority, and also includes an anti-tampering hardware security module to ensure data integrity and non-repudiation during NFC communication.

[0015] As a preferred solution of the NFC-based smart security lock system of the present invention, the wireless communication module adopts a multi-path transmission protocol, which can automatically switch to the optimal communication path when signal interference or network instability occurs, and the wireless communication module supports wireless communication technologies such as 4G, 5G or Bluetooth.

[0016] As a preferred solution of the NFC-based smart security lock system of the present invention, the power module includes an energy harvesting circuit that can collect energy from the environment and store it in a lithium battery to extend the battery life. The power module is designed to be detachable for easy replacement and charging.

[0017] As a preferred solution of the NFC-based smart security lock system of the present invention, the permission information pre-stored in the storage chip built into the control unit includes but is not limited to the role permissions of operators, maintenance personnel, safety supervisors and administrators.

[0018] As a preferred solution of the NFC-based smart security lock system of the present invention, the control unit has event recording and auditing functions, and can record all operation events and perform security audits.

[0019] As a preferred solution of the NFC-based smart security lock system of the present invention, before emergency unlocking, the user is required to perform identity authentication to ensure that only authorized personnel can use the emergency unlocking interface. Each time the emergency unlocking interface is used, the system should record the unlocking time, personnel and other relevant information for subsequent auditing.

[0020] As a preferred solution of the NFC-based smart safety lock system of the present invention, the NFC tag interacts with the NFC identification module of the lock body to realize the unlocking and locking operations of the lock body, and at the same time records the operation information and transmits it to the management system of the wind farm.

[0021] As a preferred solution of the NFC-based intelligent safety lock system of the present invention, the user's operating authority is dynamically adjusted through the management system of the wind farm to adapt to different operating requirements and safety policies.

[0022] The beneficial effects of the present invention are as follows: through the NFC-based intelligent security lock system, accurate authority management of key parts such as the wind farm equipment compartment is achieved, effectively preventing unauthorized access and operation, thereby significantly improving the safety of the work site; compared with traditional mechanical locks, the intelligent lock system reduces the burden of on-site workers carrying multiple keys, simplifies the unlocking process, and reduces the safety risks caused by improper key management; the real-time data transmission function of the wireless communication module enables the wind farm management system to monitor the status and operation events of the lock in real time, quickly respond to any abnormal situation, and enhance the timeliness of on-site safety management.

[0023] The control unit dynamically adjusts permissions through a role-based access control algorithm, making permission management more flexible and able to be updated in a timely manner according to changes in security management policies to adapt to different operational requirements. The adoption of multi-path transmission protocols enhances the stability and reliability of the wireless communication module in complex environments and reduces the impact of signal interference and network instability on communications. The energy harvesting circuit of the power module can collect energy from the environment, extend battery life, reduce replacement frequency, reduce maintenance costs, and improve the system's sustainable operation capabilities.

[0024] The design of the emergency mechanical unlocking interface ensures that when the intelligent system fails, it can still be quickly unlocked by traditional mechanical means, thereby improving the emergency response capability. The event recording and auditing functions of the control unit make all operations traceable, facilitating post-audit and compliance inspections, and enhancing the transparency and credibility of safety management. The lock body shell is made of high-strength, corrosion-resistant metal material, which enables it to adapt to the harsh outdoor environment of the wind farm and improves the durability and stability of the equipment. The interaction between the NFC tag and the lock body simplifies the unlocking and locking operations, and automatically records the operation information, reducing the workload of manual recording and improving the convenience of operation.

[0025] In summary, the present invention not only improves the safety management level of the wind farm, but also reduces the workload of the staff, enhances the stability and reliability of the system, and achieves multiple benefits of safety, convenience, economy and environmental protection through the NFC identification module, control unit and wireless communication module designed in the lock body, and the power module and emergency mechanical unlocking structure installed on the lock body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is an overall schematic diagram of an NFC-based smart security lock system of the present invention.

[0028] Figure 2 The present invention is a schematic diagram of the process of an NFC-based smart security lock system. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0033] Example 1

[0034] Reference Figure 1 - Figure 2 , which is the first embodiment of the present invention, provides an NFC-based smart security lock system, the system includes a lock body 100, the outer shell of the lock body 100 is made of high-strength, corrosion-resistant metal material;

[0035] The NFC identification module 200 integrated in the lock core works based on the principle of electromagnetic induction and includes an NFC antenna and a signal processing chip.

[0036] Specifically, the NFC identification module 200 can communicate with the user's NFC device to verify the user's identity and authority, and also includes an anti-tampering hardware security module to ensure data integrity and non-repudiation during NFC communication.

[0037] Furthermore, the NFC tag interacts with the NFC identification module 200 of the lock body 100 to realize unlocking and locking operations on the lock body 100, and at the same time, the operation information is recorded and transmitted to the management system of the wind farm.

[0038] Furthermore, the wind farm management system dynamically adjusts the user's operating permissions to adapt to different operational requirements and safety policies.

[0039] During the operation, the user brings a security document or personal device equipped with an NFC tag close to the NFC identification module 200 of the lock body 100. The NFC identification module 200 establishes a communication connection with the NFC tag through electromagnetic induction. The control unit 300 verifies the digital certificate or key stored in the NFC tag through the hardware security module to ensure the authenticity of the user's identity and the legitimacy of the authority. The control unit 300 queries the authority information in the built-in storage chip to confirm whether the operation requested by the user is authorized. If the operation requested by the user is authorized, the control unit 300 sends an unlocking signal to the actuator module; if not authorized, the operation is rejected and the unauthorized access attempt is recorded. The control unit 300 records detailed information of the unlocking operation, including time, user identity, operation type, etc. The wireless communication module 400 encrypts the recorded operation information and transmits it to the wind farm management system in real time. The wind farm management system dynamically adjusts the authority information in the storage chip through remote instructions according to changes in operation requirements and safety policies. After receiving the update instruction, the control unit 300 updates the authority information to ensure the timeliness and flexibility of authority management.

[0040] Example 2

[0041] Reference Figure 1 - Figure 2 , which is the first embodiment of the present invention, provides an NFC-based smart security lock system, the system includes a control unit 300, connected to the NFC identification module 200, and a built-in storage chip, in which the authorized NFC tag information and the corresponding operation authority are pre-stored;

[0042] The wireless communication module 400 is connected to the management system of the wind farm to transmit operation information in real time.

[0043] Specifically, the control unit 300 can implement hierarchical authorization operations to achieve real-time and effective control of personnel, matters and equipment in all aspects of operation and inspection operations. The control unit 300 uses a role-based access control algorithm that can dynamically adjust the permission information in the storage chip to respond to changes in wind farm safety management policies;

[0044] Among them, the access control algorithm logic flow:

[0045] S1. Role definition: Define the various roles in the system, such as operators, maintenance personnel, safety supervisors and administrators.

[0046] S2. Permission assignment: Each role is assigned a set of permissions that determine what operations the role can perform.

[0047] S3. User role assignment: Assign users to one or more roles.

[0048] S4. Permission adjustment: Dynamically adjust the permissions of roles according to changes in security management policies.

[0049] S5. Permission verification: Verify the permissions of the user's role when the user attempts to perform an operation.

[0050] S6. Permission update: Based on the verification result, allow or deny the operation and update the operation log.

[0051] Furthermore, the wireless communication module 400 adopts a multi-path transmission protocol, which can automatically switch to the optimal communication path when signal interference or network instability occurs. The wireless communication module 400 supports wireless communication technologies such as 4G, 5G or Bluetooth.

[0052] Furthermore, the permission information pre-stored in the built-in storage chip of the control unit 300 includes but is not limited to the role permissions of operators, maintenance personnel, safety supervisors and administrators.

[0053] Furthermore, the control unit 300 has event recording and auditing functions, which can record all operating events and perform security audits, and can automatically detect abnormal operating modes, such as unauthorized access attempts or frequent unlocking failures, and send alarms to management personnel.

[0054] During the operation, the system administrator logs in to the wind farm management system and defines the roles in the system, such as operators, maintenance personnel, safety supervisors and administrators, etc., configures a specific permission set for each role, and clarifies the operations that each role can perform. The system administrator assigns the wind farm staff to one or more roles according to their responsibilities and work requirements. When the safety policy of the wind farm changes, the system administrator updates the permissions of the roles through the management system. The control unit 300 receives the update instruction and dynamically adjusts the permission information in the storage chip. The user presents his NFC tag in front of the NFC identification module 200. The control unit 300 verifies the user's role permissions through the access control algorithm. If the user has the permission to perform the requested operation, the control unit 300 will authorize the operation, such as unlocking; otherwise, the operation is rejected and the unauthorized attempt is recorded. The control unit 300 records the detailed information of each operation, including user identity, operation type, time and result. The control unit 300 has event recording and auditing functions, regularly and automatically performs security audits, detects abnormal operation modes, and issues alarms to management personnel. The wireless communication module 400 transmits operation information to the wind farm management system in real time, using multi-path The transmission protocol automatically selects the best communication path according to the signal quality and network stability. The wireless communication module 400 supports multiple wireless communication technologies such as 4G, 5G or Bluetooth to ensure stable data transmission in different environments. When the control unit 300 detects abnormal operation, such as unauthorized access attempts or frequent unlocking failures, it automatically sends an alarm to the wind farm management system. After receiving the alarm, the manager can quickly take emergency measures, such as temporary revocation of authority, on-site inspection or alarm. The built-in storage chip of the control unit 300 pre-stores the role permissions of operators, maintenance personnel, safety supervisors and administrators, as well as the corresponding operation permissions. The system administrator can update the permission information in the storage chip according to actual conditions to adapt to different operation requirements and safety policies, and regularly maintain and update the firmware and software of the control unit 300 to ensure the accuracy of the access control algorithm and the security of the system. According to the operation log and audit results, the permission allocation and role definition are optimized to improve the efficiency and responsiveness of the system. Through these supplementary operation processes, the intelligent safety lock system can realize real-time and effective control of all aspects of wind farm operation and inspection operations, while ensuring the stability of data transmission and the security of the system.

[0055] Example 3

[0056] Reference Figure 1 - Figure 2 , which is the first embodiment of the present invention, provides an NFC-based smart security lock system, the system includes a power module 500, which uses a rechargeable lithium battery and is equipped with a low-power circuit design; and,

[0057] The emergency mechanical unlocking interface 600 is used for unlocking in emergency situations.

[0058] Specifically, the power module 500 includes an energy harvesting circuit that can harvest energy from the environment and store it in a lithium battery to extend battery life, reduce replacement frequency, reduce maintenance costs, and improve the sustainable operation capability of the system;

[0059] The power module 500 is designed to be detachable for easy replacement and charging.

[0060] Furthermore, before emergency unlocking, users are required to undergo identity authentication to ensure that only authorized personnel can use the emergency unlocking interface. Each time the emergency unlocking interface is used, the system should record the unlocking time, personnel, and other relevant information for subsequent auditing.

[0061] Going a step further, design a dedicated mechanical key that is only used in emergencies and can only be held by authorized personnel; establish a strict key management system to ensure the safe storage and tracking of keys to prevent unauthorized use; design the emergency unlocking interface in a location that is not easily discovered to prevent malicious damage or abuse; design a protective cover for the emergency unlocking interface to prevent the intrusion of dust, moisture and other environmental factors; when designing the emergency unlocking interface, consider using a standard lock cylinder so that common unlocking tools can be used to unlock the smart lock system when it completely fails; add anti-pry design around the emergency unlocking interface to prevent illegal unlocking; when the emergency unlocking interface is activated , the system can automatically send an alarm signal to the management center to monitor and record emergency unlocking events; before emergency unlocking, users are required to authenticate their identities to ensure that only authorized personnel can use the emergency unlocking interface; each time the emergency unlocking interface is used, the system should record the unlocking time, personnel and other relevant information for post-audit; regularly check the functionality of the emergency unlocking interface to ensure that it can work normally in an emergency; establish a test procedure for the emergency unlocking interface, simulate emergency situations to verify the reliability of the emergency unlocking interface, and when designing the emergency unlocking interface, consider integrating it with the electronic part of the smart lock system so that the mechanical unlocking mechanism can be automatically triggered when the electronic system fails.

[0062] During operation, the design of the power module 500 and the emergency mechanical unlocking interface 600 further improves the function of the entire system, which not only improves the safety management level of the wind farm, but also reduces the workload of the staff, enhances the stability and reliability of the system, and achieves multiple benefits of safety, convenience, economy and environmental protection.

[0063] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values, mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or system step can be changed or reordered according to an alternative embodiment. In the claims, any "system plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, improvements, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0064] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An NFC-based smart security lock system, characterized by: include, A lock body (100), wherein the outer shell of the lock body (100) is made of a high-strength, corrosion-resistant metal material; An NFC identification module (200) integrated in the lock core works based on the principle of electromagnetic induction and includes an NFC antenna and a signal processing chip; A control unit (300) connected to the NFC identification module (200) and having a built-in storage chip, wherein the storage chip pre-stores authorized NFC tag information and corresponding operation permissions; A wireless communication module (400) is connected to a management system of the wind farm to transmit operation information in real time; A power module (500) using a rechargeable lithium battery and equipped with a low power consumption circuit design; and The emergency mechanical unlocking interface (600) is used for unlocking in emergency situations.

2. The NFC-based smart security lock system according to claim 1, characterized in that: The control unit (300) is capable of implementing hierarchical authorization operations to achieve real-time and effective control of personnel, matters and equipment in all aspects of operation and inspection operations. The control unit (300) uses a role-based access control algorithm that can dynamically adjust the permission information in the storage chip to respond to changes in the wind farm safety management policy.

3. The NFC-based smart security lock system according to claim 2, characterized in that: The NFC identification module (200) is capable of communicating with the user's NFC device to verify the user's identity and authority, and also includes an anti-tampering hardware security module for ensuring data integrity and non-repudiation during the NFC communication process.

4. The NFC-based smart security lock system according to claim 3, characterized in that: The wireless communication module (400) adopts a multi-path transmission protocol, which can automatically switch to the best communication path when there is signal interference or network instability. The wireless communication module (400) supports wireless communication technologies such as 4G, 5G or Bluetooth.

5. The NFC-based smart security lock system according to claim 4, characterized in that: The power module (500) comprises an energy collection circuit, which can collect energy from the environment and store it in a lithium battery to extend the battery life. The power module (500) is designed to be detachable for easy replacement and charging.

6. The NFC-based smart security lock system according to claim 5, characterized in that: The authority information pre-stored in the built-in storage chip of the control unit (300) includes but is not limited to the role authority of the operator, maintenance personnel, safety supervisor and administrator.

7. The NFC-based smart security lock system according to claim 5 or 6, characterized in that: The control unit (300) has event recording and auditing functions, and is capable of recording all operation events and performing security audits.

8. The NFC-based smart security lock system according to claim 7, characterized in that: Before emergency unlocking, users are required to authenticate their identities to ensure that only authorized personnel can use the emergency unlocking interface. Each time the emergency unlocking interface is used, the system should record the unlocking time, personnel and other relevant information for subsequent auditing.

9. The NFC-based smart security lock system according to claim 8, characterized in that: The NFC tag interacts with the NFC identification module (200) of the lock body (100) to realize unlocking and locking operations on the lock body (100), and at the same time, the operation information is recorded and transmitted to the management system of the wind farm.

10. The NFC-based smart security lock system according to claim 9, characterized in that: The wind farm management system dynamically adjusts the user's operating permissions to adapt to different operational requirements and safety policies.

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