RFID-based intelligent seal management cabinet

Abstract

This application discloses an RFID-based intelligent seal management cabinet, including a cabinet body, a storage unit, an electronic lock system, a main control module, a monitoring and identification system, an identity verification module, and an emergency support module. The storage unit includes multiple independent storage layers, each containing several seal slots. The electronic lock system is configured to independently control the opening and closing of each storage layer. The monitoring and identification system includes a first detection module and a second detection module. The first detection module reads the seal's identity ID information, and the second detection module detects the presence of a physical entity in the seal slot. The main control module verifies the seal status in real time based on the identity ID information and the physical entity's presence signal. This invention effectively prevents management loopholes by using a dual verification mechanism of RFID identity recognition and physical entity detection to ensure that only the tag is returned without returning the physical seal.

Description

Technical Field

[0001] This application relates to the field of enterprise asset and Internet of Things management, and in particular to an RFID-based smart seal management cabinet. Background Technology

[0002] Seals are important credentials for enterprises and institutions to exercise management authority and legal effect. With the expansion of enterprise scale and the popularization of remote office work, the secure management and compliant use of seals have become a core aspect of enterprise risk control. Traditional seal management models mostly rely on manual safekeeping and manual registration of borrowing and returning records. This method is not only inefficient, but also prone to risks such as unauthorized use, theft, unauthorized removal, and unclear records of borrowing and returning status due to the lack of effective supervision.

[0003] To address the aforementioned issues, some smart seal cabinets or smart key cabinets based on RFID (Radio Frequency Identification) technology have emerged in the existing technology. These devices typically deploy RFID antennas inside the cabinet drawers, determining the seal's presence by reading the electronic tag affixed to the seal. However, in practical applications, existing solutions relying solely on RFID technology reveal the following significant technical shortcomings: RFID technology, based on radio frequency signals, is susceptible to interference from metallic environments or multipath effects, leading to unstable readings. More seriously, RFID can only verify the presence of a "tag," not a "physical seal." If a malicious individual removes the RFID tag and leaves it inside the cabinet, while taking the physical seal, existing equipment will mistakenly register the seal as still in place, posing a significant security vulnerability. Summary of the Invention

[0004] To address the security vulnerability of "RFID tag separation attack" in existing technologies, which leads to the system misjudging the presence of the seal, this application provides an RFID-based intelligent seal management cabinet.

[0005] An RFID-based intelligent seal management cabinet includes: Cabinet; A storage unit is disposed within the cabinet. The storage unit includes multiple independent storage layers, and each storage layer is provided with several stamp slots. An electronic lock system, wherein the electronic lock system is configured to independently control the opening and closing of each of the storage layers; Main control module; The monitoring and identification system includes a first detection module and a second detection module disposed in each of the storage layers; the first detection module includes a radio frequency identification antenna for reading the identity ID information of the seal located in the seal slot; the second detection module is independently disposed for each of the seal slots for detecting whether there is a physical entity in the seal slot. The main control module is communicatively connected to both the electric lock system and the monitoring and identification system. The main control module is configured to: control the electric lock of the corresponding target storage layer to open only when a valid identity verification instruction and seal retrieval instruction are received; and verify the return status of the seal in real time based on the identity ID information read by the first detection module and the physical entity presence signal fed back by the second detection module.

[0006] By adopting the above technical solution, a dual verification mechanism of "identity ID" and "physical presence" is constructed. This effectively solves the security vulnerability of "RFID tag separation attack" in existing technologies, where the tag is torn off and left in the cabinet while the seal is taken away, causing the system to misjudge the seal's presence. Simultaneously, the combination of independently controlled electronic locks and a detection module accurate to the slot level enables refined access control, ensuring that only authorized specific seals can be retrieved, and that return requires dual signal verification, significantly improving the security and uniqueness of seal management.

[0007] Optionally, the cabinet is physically divided into an operating area and a storage area; The operating area is provided with an RFID binding groove, and an independent radio frequency reader is installed in the RFID binding groove. The radio frequency reader is connected to the main control module. The main control module is configured to initialize the identity ID or update the information of the seal to be stored through the RFID binding groove, and establish a mapping relationship between the identity ID and the specific seal slot in the storage area.

[0008] By adopting the above technical solution, signal interference is isolated using an independent physical operating area, avoiding the risk of misreading or cross-reading caused by the dense arrangement of multiple tags when operating directly in the storage area. A dedicated groove is used to bind the physical object to the data, ensuring the absolute accuracy of the mapping between the physical location and the digital ID when the seal is entered into the warehouse, thus reducing the error rate of operation and maintenance.

[0009] Optionally, the storage layer includes a regular seal layer and a smart seal layer; The shape of the stamp slot in the ordinary stamp layer is adapted to the base of an ordinary physical stamp; The smart stamp layer has a charging interface in the stamp slot. The charging interface is connected to the power management module inside the cabinet through an electrical circuit, and is used to charge the smart stamp when the stamp is returned to its original position.

[0010] By adopting the above technical solution, the storage needs of both traditional physical seals and new electronic / Bluetooth smart seals are taken into account. Specifically addressing the technical pain point of smart seals becoming unusable due to power depletion during long-term storage, this solution achieves storage-as-maintenance, ensuring that smart seals are always fully charged and usable in emergency retrieval, thus improving device compatibility and business support capabilities.

[0011] Optionally, the second detection module includes an infrared beam sensor or a photoelectric sensor, which is disposed at the bottom or side wall of the stamp slot to generate a signal indicating that the physical entity is in place.

[0012] By adopting the above technical solution and utilizing mature and low-cost photoelectric sensing technology, it is possible to quickly and sensitively detect whether there are objects obstructing the slot. This non-contact detection method has a fast response speed and can effectively prevent users from returning only the RFID tag without returning the physical item, providing the system with a basic basis for determining the physical presence of the item.

[0013] Optionally, the second detection module includes a gravity sensor, which is disposed at the bottom of the stamp slot and is used to monitor the weight of the physical entity located in the stamp slot in real time.

[0014] By adopting the above technical solution, the dimension of physical detection has been elevated from presence to weight. Weight is an inherent physical property of a seal, and it is difficult to deceive with simple obstructions like photoelectric signals. This provides a crucial hardware foundation for subsequent advanced anti-counterfeiting (anti-counterfeiting weight replacement) and refined auditing (ink consumption monitoring).

[0015] Optionally, the storage layer is a smart seal layer, and the main control module is configured as follows: In response to a stamp lending operation, a first weight value is recorded by the gravity sensor. In response to the stamp return operation, a second weight value is recorded by the gravity sensor, and the weight difference between the first weight value and the second weight value is calculated. Obtain the approved number of stamps for this stamp lending task; The theoretical weight loss is calculated based on the approved number of stamps and the preset standard value for ink consumption per stamp. The weight difference is compared with the theoretical loss weight. When the deviation between the two exceeds a preset compliance threshold, an abnormal audit alarm is generated.

[0016] By adopting the above technical solution, the system creatively utilizes the physical loss of ink to audit the compliance of business operations. It can identify anomalies such as unstamped loans (no change in weight), excessive stamping (excessive weight loss), or damaged stamps / missing parts (sudden weight loss). This audit logic based on physical laws overcomes the shortcomings of traditional stamp cabinets, which can only record borrowing and returning times but cannot monitor the usage process, thus greatly improving risk control.

[0017] Optionally, a camera module is provided on the front of the cabinet; The main control module is configured to automatically capture an image of the current return operator using the camera module when the abnormal audit alarm is generated, and store the image in association with the abnormal audit alarm.

[0018] By adopting the above technical solution, real-time linkage between data anomalies and on-site evidence was achieved. When the gravity audit logic detects suspicious circumstances, it immediately captures images of the operators, forming a complete closed-loop chain of evidence and providing irrefutable visual evidence for subsequent accountability for violations.

[0019] Optionally, the main control module is also configured with anti-counterfeiting verification logic: The main control module pre-stores standard physical fingerprint information for each seal, which includes at least the seal's identity ID and standard weight range. When the seal is returned, the main control module simultaneously compares the real-time identity ID read by the first detection module with the real-time weight value collected by the second detection module. The seal is deemed successfully returned if and only if both the real-time identity ID and the real-time weight value match the standard physical fingerprint information.

[0020] By employing the above technical solutions, a highly secure anti-counterfeiting barrier has been constructed. Even if an attacker copies the RFID tag and affixes it to objects of different weights, or uses metal blocks of equal weight without RFID tags, they will not be able to fool the system. Only when the correct ID and the correct weight are both met can the return be completed, completely eliminating the risk of covert substitution.

[0021] Optionally, it may also include an authentication module, which is integrated into the display screen assembly on the surface of the cabinet, and the authentication module includes at least one of a fingerprint recognition unit, a face recognition unit, or an iris recognition unit.

[0022] By adopting the above technical solution and introducing biometric identification technology into the authorization verification process, the uniqueness and non-transferability of the operator's identity are ensured, preventing unauthorized personnel from accessing the seal due to borrowed passwords or IC cards, thus improving the security of use.

[0023] Optionally, it also includes an emergency protection module, which includes an emergency unlocking device located on the back of the cabinet and an uninterruptible power supply module located inside the cabinet. The emergency unlocking device is configured to manually open a designated storage layer using a dedicated mechanical key in the event of a power outage; the uninterruptible power supply module is electrically connected to the electric lock system, the main control module, and the monitoring and identification system.

[0024] By adopting the above technical solutions, business continuity is ensured under extreme circumstances (such as unexpected power outages or system failures). The uninterruptible power supply module ensures the complete preservation of data and short-term power supply during power outages, while the mechanical emergency unlocking device serves as a last resort, ensuring that the core seal can be retrieved in an emergency under any circumstances, meeting the essential needs of enterprise emergency management.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By using a dual verification mechanism of RFID + physical entity detection, the security risks of the separation between the tag and the physical object are solved: This application not only reads the electronic tag, but also confirms that there is a physical object in the physical slot through infrared or gravity sensors, which effectively prevents fraudulent behavior of only returning the tag and taking away the seal, and ensures that the account and the actual object match.

[0026] 2. The process audit of seal usage is realized by utilizing minute changes in gravity: This application innovatively combines the physical weight change of ink consumption with the number of times the approval form is verified, which can intelligently identify violations such as stamping too much, stamping too little, or not stamping, and solve the regulatory blind spot of traditional technology that can only manage "entry and exit" but not "stamping".

[0027] 3. Intelligent operation and maintenance and compatibility design: The dedicated RFID binding area prevents signal interference, and the built-in charging interface solves the battery anxiety of smart stamps. This makes the device compatible with both traditional physical stamps and new electronic devices, giving it high practicality and market promotion value. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the management cabinet in Embodiment 1 of this application.

[0029] Figure 2 This is a schematic diagram of the structure of the monitoring and identification system, which is mainly shown in Embodiment 1 of this application.

[0030] Figure 3 This is a schematic diagram of the structure of the emergency support module, which is the main feature of Embodiment 1 of this application.

[0031] Figure 4 This is the logic diagram of the ink consumption audit function in Embodiment 2 of this application.

[0032] Explanation of reference numerals in the attached figures: 100. Cabinet; 110. Operating area; 111. RFID binding groove; 120. Storage area; 200. Storage unit; 210. Stamp slot; 300. Electric lock system; 400. Monitoring and identification system; 410. First detection module; 420. Second detection module; 500. Identity verification module; 600. Emergency support module. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of protection of the invention. Example 1

[0034] This embodiment provides an RFID-based intelligent seal management cabinet, which aims to solve the technical problems in traditional seal management, such as lax identity verification, opaque storage and retrieval processes, lack of status monitoring, disconnected processes, and insufficient emergency support, so as to achieve accurate, secure, and traceable management of the entire life cycle of seals.

[0035] like Figure 1-3 As shown, the intelligent seal management cabinet in this embodiment includes a cabinet body 100, a storage unit 200, an electric lock system 300, a main control module, a monitoring and identification system 400, an identity verification module 500, and an emergency support module 600.

[0036] Reference Figure 1 Optionally, the cabinet 100 is physically divided into an operation area 110 and a storage area 120, which are physically isolated to ensure that operators cannot directly access the seals in the storage area 120 without authorization, thereby improving security. Furthermore, a metal shielding partition is provided between the operation area 110 and the storage area 120; this physical isolation design effectively prevents electromagnetic signals from interfering with the authentication module 500.

[0037] In one specific embodiment, the operation area 110 is located on the left side of the cabinet 100, and the storage area 120 is located on the right side of the cabinet 100. The operation area 110 is the core area for human-computer interaction, and a display screen assembly is integrated on its front. An authentication module 500 is disposed in the display screen assembly, and the authentication module 500 is used to verify the operator's permissions.

[0038] To achieve a high level of security in identity verification, the identity verification module 500 preferably includes a biometric unit, such as at least one of a fingerprint recognition unit, a face recognition unit, or an iris recognition unit. In this embodiment, it integrates a capacitive fingerprint sensor and a high-definition infrared camera. By recognizing the person rather than the key, this ensures that every operation can be accurately linked to a specific individual, fundamentally solving the security risks associated with traditional mechanical locks or combination locks.

[0039] Reference Figure 1 and Figure 2 The storage unit 200 is located inside the storage area 120. The storage unit 200 consists of multiple independent storage layers, which can be designed as individual drawer-type storage layers. Each storage layer is controlled by an independent electronic lock system 300. Optionally, the electronic lock can be an electromagnetic lock or a motor lock.

[0040] Based on the valid verification result transmitted by the authentication module 500 and the retrieval command selected by the user on the display screen, the main control module sends an unlock signal only to the electronic lock of the specific storage layer where the target seal is located. Optionally, the main control module can be specific hardware such as an MCU or an industrial control computer. This hierarchical and independent access control method ensures that even legitimate users can only access seals within their authorized scope, achieving fine-grained access control.

[0041] Within each storage layer, there are several seal slots 210 for placing seals. To enable real-time monitoring of the seal status, this embodiment includes a monitoring and identification system 400. The monitoring and identification system 400 includes a first detection module 410 and a second detection module 420 disposed in each storage layer.

[0042] Specifically, in this embodiment, the first detection module 410 is embodied as a shelf-type RFID antenna covering each storage layer. Each seal to be managed has a passive RFID electronic tag pre-attached or embedded on its bottom or side, storing a unique identification ID. When the storage layer is closed, the main control module periodically drives the RFID antenna to scan and read the identification IDs of all seals within the area, thereby accurately identifying which seal is present.

[0043] Specifically, the second detection module 420 is used to detect whether a physical entity exists within the stamp slot 210, i.e., to determine whether the stamp is in place. In this embodiment, the second detection module 420 is independently set for each stamp slot 210, and the second detection module 420 can be an infrared beam sensor or a photoelectric sensor. If an infrared beam sensor is used, the infrared transmitter and receiver are respectively set on opposite side walls of the stamp slot 210. When the stamp is placed in the slot, its physical entity will block the infrared beam, and the sensor will feed back a high-level signal indicating that it is in place to the main control module; when the stamp is removed, the beam resumes conduction, and a low-level signal indicating that it is out of place is fed back. In this way, real-time, delay-free monitoring of the status of each slot can be achieved.

[0044] The core logic of the main control module is that upon receiving a valid authentication command and a seal retrieval command, it controls the electronic lock of the corresponding target storage layer to open. When the seal is returned, the main control module activates the monitoring and identification system 400: First, the second detection module 420 confirms that a physical entity has been placed in the target slot; then, it drives the first detection module 410 to read the identity ID of that physical entity. The main control module compares the read real-time identity ID with the seal ID that should be returned to the slot in the system database. Only when both the physical presence signal and the identity ID information are verified correctly will the system determine that the seal has been successfully returned and update the background record. This dual verification mechanism effectively prevents counterfeit items from occupying slots or misplaced seals, ensuring the accuracy of management.

[0045] In addition, the main control module is equipped with a storage chip, such as a flash memory chip, to record log information such as identity verification, selected stamp, and operation time for each operation. Simultaneously, the main control module is configured with a network communication interface, enabling it to upload and synchronize the aforementioned operation information and status data fed back by the monitoring and identification system 400 to the external backend management system in real time, thereby achieving a digital closed loop for business and management.

[0046] Furthermore, to facilitate the storage management and information initialization of seals, an RFID binding groove 111 is provided in the operation area 110. An independent radio frequency reader / writer is installed within the RFID binding groove 111, and the radio frequency reader / writer is connected to the main control module. Preferably, the radio frequency reader / writer is a high-frequency RFID reader / writer with a working frequency of 13.56MHz, or an ultra-high frequency RFID reader / writer with a longer reading distance and faster speed. The radio frequency identification antenna in the first detection module 410 is preferably a microstrip antenna, which has the advantages of small size and light weight, and can be compactly installed in the upper space of each storage layer. When a new seal is stored or information is changed, the administrator only needs to place the seal into the RFID binding groove 111 to write and read the identity ID through the display screen interface, and establish a mapping relationship between it and a specific seal slot 210 in the storage area 120. This process is efficient and error-free.

[0047] In this embodiment, the storage layer includes a regular stamp layer and a smart stamp layer. Specifically, the layered storage unit 200 is divided into eight drawer-like structures from top to bottom. The upper four layers are regular stamp layers, each with 20 stamp slots 210, totaling 80 slots. The shape of the stamp slots 210 in the regular stamp layers is adapted to the base of a regular physical stamp, used to hold regular physical stamps with passive RFID tags, preventing the stamps from rolling. The lower four layers are smart stamp layers, each with four stamp slots 210, used to hold new electronic smart stamps with built-in batteries. The stamp slots 210 in the regular stamp layers can be made of plastic, which has a certain degree of elasticity and can better secure the stamps. They can also be made of rubber to increase friction with the stamp.

[0048] The stamp slot 210 of the smart stamp layer is equipped with a charging interface, such as a spring probe interface or a Type-C interface. These charging interfaces are connected to the power management module inside the cabinet 100 via electrical wiring. When the smart stamp with its built-in battery is returned to its position, it can be automatically charged to ensure that it is always in a usable state. The inner wall of the stamp slot 210 of the smart stamp layer can be made of insulating material to prevent leakage.

[0049] Reference Figure 3 In addition, to cope with sudden power outages and other emergencies, this embodiment also includes an emergency protection module 600. The emergency protection module 600 includes an uninterruptible power supply (UPS) module located inside the cabinet 100 and an emergency unlocking device located at the back of the cabinet 100 or in the electrical compartment. The UPS module is electrically connected to the main control module, the electric lock system 300, and the monitoring and identification system 400, providing short-term power supply in the event of an external power outage to ensure normal system shutdown or completion of emergency operations. The emergency unlocking device is a mechanical structure; authorized personnel can use a dedicated mechanical key to manually open a designated storage layer in the event of a complete power outage or system failure, ensuring business continuity.

[0050] Furthermore, a physically isolated dedicated electrical compartment is located at the rear of cabinet 100, where the aforementioned main control module, uninterruptible power supply (UPS) module, and other electrical control systems are centrally installed. This electrical compartment also houses an RFID antenna control module and a power strip. The RFID antenna control module is connected to the main control module and is specifically used to drive and coordinate the operation of the RFID antennas on each storage shelf; the power strip is connected to the UPS module and can be used to provide independent emergency charging support for the smart stamp when needed.

[0051] The above solution establishes a dual verification mechanism based on both "identity ID" and "physical presence." This effectively addresses the security vulnerability of "RFID tag separation attacks" in existing technologies, where users can simply tear off the tag and leave it inside the cabinet while taking the seal with them, leading to the system misjudging the seal's presence. Example 2

[0052] This embodiment is a further optimization of embodiment 1, the main difference being that the detection module is further upgraded.

[0053] Optionally, the second detection module employs a gravity sensor, which is positioned at the bottom of each stamp slot. Alternatively, a micro-gravity sensor with a range of 0-500g and an accuracy of 0.001g, such as a resistance strain gauge sensor, can be used. This gravity sensor is positioned at the bottom of each stamp slot and equipped with shock-absorbing pads to accurately measure minute changes in weight. Therefore, using a gravity sensor not only determines whether the stamp is in place but also monitors the precise weight of the physical entity within the stamp slot in real time.

[0054] The main control module is equipped with anti-counterfeiting verification logic: S11. The main control module pre-stores standard physical fingerprint information for each seal, and the standard physical fingerprint information includes at least the seal's identity ID and standard weight range.

[0055] Optionally, the standard weight range for a copper seal is 150g ± 2g.

[0056] S12. When the seal is returned, the main control module simultaneously compares the real-time identity ID read by the first detection module with the real-time weight value collected by the second detection module.

[0057] S13. The seal is deemed successfully returned if and only if both the real-time identity ID and the real-time weight value match the standard physical fingerprint information.

[0058] Specifically, when the seal is returned, the main control module simultaneously calls the first detection module to obtain the real-time identity ID and the second detection module to collect the real-time weight value. Only when the real-time identity ID matches the pre-stored ID and the real-time weight value falls within the preset standard weight range, does the main control module determine that the seal is genuine and the return is successful. This dual comparison of ID and weight greatly enhances anti-counterfeiting capabilities and can effectively identify violations such as the use of counterfeit seals of incorrect material or size for substitution.

[0059] Reference Figure 4 Preferably, based on gravity sensing, the technical solution of this application also has an ink consumption audit function. This function is suitable for managing smart seals, in which case the storage layer is the smart seal layer. The main control module is configured as follows: S21. In response to the stamp lending operation, a first weight value is recorded by the gravity sensor.

[0060] Specifically, when a user legally lends out a smart stamp, the main control module will record the precise weight of the stamp before it leaves the stamp slot through a gravity sensor, and record it as the first weight value W1.

[0061] S22. In response to the stamp return operation, the second weight value is recorded by the gravity sensor, and the weight difference between the first weight value and the second weight value is calculated.

[0062] Specifically, when the user returns the smart stamp, the gravity sensor records its real-time weight after return, denoted as the second weight value W2. The main control module calculates the actual weight difference ΔW. a = W1 - W2.

[0063] S23. Obtain the approved number of stamps for this stamp lending task.

[0064] Specifically, the main control module obtains the approved number of stamps N for this stamping task from the back-end management system; for example, if a contract signing requires 10 stamps, then N=10.

[0065] S24. Calculate the theoretical weight loss based on the approved number of stamps and the preset standard value of ink consumption per stamp.

[0066] Specifically, the system has a preset standard value Δw for the average ink consumption per stamp, for example, 0.01g / stamp, which can be calibrated experimentally. The main control module calculates the theoretical total ink loss weight W. t = N * Δw.

[0067] S25. Compare the weight difference with the theoretical loss weight. When the deviation between the two exceeds a preset compliance threshold, generate an abnormal audit alarm.

[0068] Specifically, the main control module compares the actual weight difference ΔW. a Compared with theoretical loss weight W t If the relative deviation between the two exceeds a preset compliance threshold, which can be 20%, for example, |ΔW a - W t | / W t If the percentage is greater than 20%, the system will determine that there is a suspicion of abnormal use of seals, such as stamping without authorization beyond the authorized number of times, and will automatically generate an abnormal audit alert.

[0069] Furthermore, to gather evidence of abnormal behavior, a camera module can be installed on the front of the cabinet, such as above the display screen. When the main control module generates the aforementioned abnormal audit alarm, it will immediately trigger the camera module to capture an image of the person currently returning the item, and store the image in association with the alarm log, providing strong evidence for subsequent accountability.

[0070] In summary, this invention, through modular design, organically combines highly secure identity verification, accurate RFID / gravity dual item identification, layered independent electronic locks, differentiated storage units, and intelligent auditing logic to construct a closed-loop, end-to-end intelligent seal management system. It not only solves many pain points in existing technologies, significantly improving the security, transparency, and efficiency of seal management, but also extends the depth of management from pre-event prevention and in-event control to post-event traceability and auditing through innovative functions such as weight auditing, demonstrating extremely high practical value and market potential.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An RFID-based intelligent seal management cabinet, characterized in that, include: Cabinet (100); A storage unit (200) is disposed within the cabinet (100). The storage unit (200) includes multiple independent storage layers, and each storage layer is provided with a number of stamp slots (210). An electronic lock system (300) is configured to independently control the opening and closing of each of the storage layers; Main control module; The monitoring and identification system (400) includes a first detection module (410) and a second detection module (420) disposed in each of the storage layers; the first detection module (410) includes a radio frequency identification antenna for reading the identity ID information of the seal located in the seal slot (210); the second detection module (420) is independently disposed for each of the seal slots (210) for detecting whether there is a physical entity in the seal slot (210); The main control module is connected to the electric lock system (300) and the monitoring and identification system (400) respectively. The main control module is configured to: control the electric lock of the corresponding target storage layer to open when a valid identity verification instruction and seal retrieval instruction are received; and verify the return status of the seal in real time according to the identity ID information read by the first detection module (410) and the physical entity presence signal fed back by the second detection module (420).

2. The intelligent seal management cabinet according to claim 1, characterized in that, The cabinet (100) is physically divided into an operation area (110) and a storage area (120). The operation area (110) is provided with an RFID binding groove (111), and an independent radio frequency reader is provided in the RFID binding groove (111), which is connected to the main control module; The main control module is configured to initialize the identity ID or update the information of the seal to be put into storage through the RFID binding groove (111), and establish a mapping relationship between the identity ID and the specific seal slot (210) in the storage area (120).

3. The intelligent seal management cabinet according to claim 1, characterized in that, The storage layer includes a regular seal layer and a smart seal layer; The shape of the stamp slot (210) of the ordinary stamp layer is adapted to the base of an ordinary physical stamp; The smart seal layer has a charging interface in the seal slot (210). The charging interface is connected to the power management module in the cabinet (100) through an electrical line to charge the smart seal when the seal is returned to its original position.

4. The intelligent seal management cabinet according to claim 1, characterized in that, The second detection module (420) includes an infrared beam sensor or a photoelectric sensor, which is disposed at the bottom or side wall of the stamp slot (210) to generate a physical entity presence signal.

5. The intelligent seal management cabinet according to claim 1, characterized in that, The second detection module (420) includes a gravity sensor, which is located at the bottom of the stamp slot (210) and is used to monitor the weight of the physical entity located in the stamp slot (210) in real time.

6. The intelligent seal management cabinet according to claim 5, characterized in that, The storage layer is a smart seal layer, and the main control module is configured as follows: In response to a stamp lending operation, a first weight value is recorded by the gravity sensor. In response to the stamp return operation, a second weight value is recorded by the gravity sensor, and the weight difference between the first weight value and the second weight value is calculated. Obtain the approved number of stamps for this stamp lending task; The theoretical weight loss is calculated based on the approved number of stamps and the preset standard value for ink consumption per stamp. The weight difference is compared with the theoretical loss weight. When the deviation between the two exceeds a preset compliance threshold, an abnormal audit alarm is generated.

7. The intelligent seal management cabinet according to claim 6, characterized in that, The front of the cabinet (100) is equipped with a camera module; The main control module is configured to automatically capture an image of the current return operator using the camera module when the abnormal audit alarm is generated, and store the image in association with the abnormal audit alarm.

8. The intelligent seal management cabinet according to claim 5, characterized in that, The main control module is also equipped with anti-counterfeiting verification logic: The main control module pre-stores standard physical fingerprint information for each seal, which includes at least the seal's identity ID and standard weight range. When the seal is returned, the main control module simultaneously compares the real-time identity ID read by the first detection module (410) with the real-time weight value collected by the second detection module (420). The seal is deemed successfully returned if and only if both the real-time identity ID and the real-time weight value match the standard physical fingerprint information.

9. The intelligent seal management cabinet according to claim 1, characterized in that, It also includes an authentication module (500) integrated in a display screen assembly on the surface of the cabinet (100), the authentication module (500) including at least one of a fingerprint recognition unit, a face recognition unit or an iris recognition unit.

10. The intelligent seal management cabinet according to claim 1, characterized in that, It also includes an emergency protection module (600), which includes an emergency unlocking device located on the back of the cabinet (100) and an uninterruptible power supply module located inside the cabinet (100); The emergency unlocking device is configured to manually open a designated storage layer using a dedicated mechanical key in the event of a power outage; the uninterruptible power supply module is electrically connected to the electric lock system (300), the main control module, and the monitoring and identification system (400).

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