Remote non-contact visual intercom method and system for access control

Abstract

The invention relates to an access control remote non-contact visual intercom method and system, and the method comprises the steps: controlling access control equipment to shoot a visitor when a door opening request from the access control equipment is received, and obtaining a portrait picture; identifying the portrait picture to obtain a portrait identification result, and encrypting and storing the portrait picture and the portrait identification result; if the portrait recognition result belongs to a preset authority list or a door opening instruction from a user terminal is received, controlling access control equipment to open a door; and controlling the access control equipment to record door opening information, wherein the door opening information comprises the portrait picture, the access time and whether the door opening is successful or not. The visitor portrait is shot and recognized in real time through the access control equipment, door opening is controlled in combination with the preset permission directory or the user terminal remote instruction, and the portrait picture, the recognition result and the door opening record are encrypted and stored, so that the problem that traditional access control depends on physical contact is effectively solved.

Description

Technical Field

[0001] The present application relates to the field of access control technology, and in particular to a method and system for remote contactless video intercom for access control. Background Art

[0002] In the construction industry, access control refers to the control of "door" access permissions. "Door" here, broadly speaking, encompasses all types of accessible passageways, including doors for people and vehicles. Therefore, access control encompasses vehicle access control and community access control. In residential management applications, access control systems are a key tool for personnel management, not for the purpose of collecting management fees, but primarily for controlling access permissions for personnel.

[0003] Traditional access control systems rely primarily on physical keys, IC cards, or fixed passwords for identity authentication, which presents significant technical limitations: users must operate the device at close range to open the door, and are unable to remotely authorize or view visitor information in real time through mobile terminals. This is especially true when users are out or temporarily authorizing visitors, requiring them to rely on a third party to operate on their behalf or configure temporary permissions in advance, resulting in a cumbersome and inflexible usage process.

[0004] Based on the above technology, the present application provides a method and system for remote contactless video intercom for access control. Summary of the Invention

[0005] In order to improve the problem that traditional access control systems mainly rely on physical keys, IC cards or fixed passwords for identity authentication, which has significant technical limitations, the present application provides an access control remote contactless video intercom method and system.

[0006] In the first aspect, the present application provides a method for remote contactless video intercom for access control, which adopts the following technical solutions:

[0007] Upon receiving a door opening request from an access control device, the access control device is controlled to take a photo of the visitor and obtain a portrait image;

[0008] Identify the portrait image, obtain a portrait recognition result, and encrypt and store the portrait image and the portrait recognition result;

[0009] If the portrait recognition result belongs to the preset permission list or a door opening command is received from the user terminal, the access control device is controlled to open the door;

[0010] The access control device is controlled to record door opening information, where the door opening information includes: the portrait image, access time, and whether the door opening is successful.

[0011] Preferably, when receiving the door opening request from the access control device, controlling the access control device to take a photo of the visitor and obtaining a portrait image, the method further includes:

[0012] Initialize the settings of the access control device that is connected to the network for the first time, including: coordinate location registration, region matching and number allocation;

[0013] Send the portrait information submitted by the user to the access control device, and store the portrait information in the permission list.

[0014] Preferably, the step of identifying the portrait image, obtaining the portrait recognition result, and encrypting and storing the portrait image and the portrait recognition result further includes:

[0015] Controlling the access control device to recognize the portrait image, and receiving the portrait image and the portrait recognition result from the access control device in real time;

[0016] The portrait image and the portrait recognition result are encrypted and temporarily stored, and the portrait image and the portrait recognition result are sent to a filing server for storage.

[0017] Preferably, after temporarily storing the portrait image and the portrait recognition result after encryption, the method further includes:

[0018] Encrypt the portrait image and the portrait recognition result in blocks, and append a timestamp hash value based on the blockchain;

[0019] The encrypted data is distributed and stored in multiple filing servers, and can only be decrypted and retrieved through the authorized key of the access control management server.

[0020] Preferably, upon receiving the door opening request from the access control device, controlling the access control device to take a photo of the visitor and obtaining a portrait image, the method further includes:

[0021] If the door opening request is a video dialing request, a QR code is displayed on the access control device;

[0022] When receiving a video dialing request corresponding to the QR code, the user terminal or indoor access control system will issue a reminder and display the video;

[0023] When the door opening instruction is received from the user terminal or the indoor access control, the access control device is controlled to open the door.

[0024] Preferably, after the user terminal or indoor access control system issues a reminder and displays the video when receiving the video dialing request corresponding to the QR code, the method further includes:

[0025] After receiving the video dialing request, the visitor's voice is collected in real time through the microphone of the access control device, the voiceprint features are extracted and compared with the pre-stored voiceprint library;

[0026] If the voiceprint matching degree exceeds the first threshold, and the visitor's face matches the portrait in the permission list exceeds the second threshold, a door opening instruction is directly sent to the access control management server;

[0027] If the voiceprint matching fails but the portrait matching succeeds, the system will downgrade to sending a door opening confirmation request to the user terminal and display a prompt on the user terminal interface that the voiceprint matching failed.

[0028] Preferably, based on the real-time epidemic risk level of the area where the access control device is located, the validity period of the information in the permission list is automatically adjusted: if it is in a high-risk area, the validity period of the non-resident portrait permission is shortened to a preset time;

[0029] If you are in a low-risk area, the permission list will be automatically updated and expired unverified portrait data will be removed;

[0030] When it is detected that the cumulative number of failed portrait matches in the permission list exceeds the threshold, the remote door opening function of the corresponding device is automatically frozen and an alarm is pushed to the associated user terminal.

[0031] In a second aspect, the present application provides a remote contactless video intercom device for access control, which adopts the following technical solutions, including:

[0032] The shooting module is used to control the access control device to shoot the visitor and obtain a portrait image when receiving a door opening request from the access control device;

[0033] An identification module is used to identify the portrait image, obtain a portrait recognition result, and encrypt and store the portrait image and the portrait recognition result;

[0034] The door opening module is used to control the access control device to open the door if the portrait recognition result belongs to the preset permission list or a door opening command is received from the user terminal;

[0035] The recording module is used to control the access control device to record the door opening information, and the door opening information includes: the portrait image, the access time, and whether the door opening is successful.

[0036] In a third aspect, the present application further provides a control device, comprising:

[0037] The system comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed by the above-mentioned access control remote contactless video intercom method.

[0038] In a fourth aspect, the present application also provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed by the above-mentioned access control remote contactless video intercom method.

[0039] In summary, the system uses access control equipment to capture and identify visitor portraits in real time, and controls door opening in combination with preset permission lists or remote commands from user terminals. At the same time, portrait images, recognition results and door opening records are encrypted and stored. Block encryption, blockchain timestamps and distributed storage technologies are used to ensure data integrity and anti-tampering, effectively solving the problem of traditional access control relying on physical contact and easy data leakage. The system supports QR code scanning to initiate video dialing requests. After receiving the request, the user terminal or indoor device displays the picture in real time and authorizes door opening. Combined with voiceprint matching technology, multiple verifications are achieved. When the voiceprint matches the pre-stored database beyond the threshold and the face verification is passed, the door will open automatically. Otherwise, the system will trigger a call. A secondary confirmation process is launched to balance security and convenience; by obtaining the epidemic risk level of the area where the access control device is located in real time, the validity period of the permission list is dynamically adjusted, the validity period of non-resident permissions in high-risk areas is automatically shortened and abnormal device functions are frozen, and invalid data is regularly cleaned up in low-risk areas to achieve flexible and secure permission management to meet the needs of epidemic prevention and control; temporary visitors generate encrypted QR codes, access records are automatically archived and a traceable chain is generated, the temporary authorization process is simplified, and property management efficiency is improved, ultimately achieving the technical effects of contactless operation to block virus transmission, multiple verifications to improve security, dynamic permissions to strengthen active defense, and data encryption to ensure compliance and traceability. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The invention discloses a flow chart of a method for remote contactless video intercom for access control.

[0041] Figure 2 It is a schematic diagram of an access control remote contactless video intercom system.

[0042] Figure 3 The present invention is a structural block diagram of an access control remote contactless video intercom device. DETAILED DESCRIPTION

[0043] The following combination Figure 1 - Figure 3 This application is described in further detail.

[0044] The access control system in this application consists of intelligent facial recognition access control systems installed at community gates and unit doors. The access control equipment and the gates are connected via electromagnetic locks, electronic latch locks, and other locks that can be controlled by electrical signals. The system uses the access control equipment to capture and identify the visitor's portrait in real time, and controls the door opening based on a preset permission list or remote commands from the user terminal. The portrait image, recognition results, and door opening records are encrypted and stored. Block encryption, blockchain timestamps, and distributed storage technologies are used to ensure data integrity and anti-tampering. This effectively solves the problem of traditional access control systems relying on physical contact and prone to data leakage.

[0045] Reference Figure 1 and Figure 2, the embodiment of the present application includes at least steps S10 to S40.

[0046] S10, when receiving a door opening request from the access control device, controlling the access control device to take a photo of the visitor to obtain a portrait image.

[0047] S20: Identify the portrait image, obtain the portrait recognition result, and encrypt and store the portrait image and the portrait recognition result.

[0048] S30: If the portrait recognition result belongs to the preset permission list or a door opening instruction is received from the user terminal, the access control device is controlled to open the door.

[0049] S40, controlling the access control device to record door opening information, where the door opening information includes: a portrait image, access time, and whether the door opening is successful.

[0050] Specifically, upon receiving a request to open the door, the access control device automatically captures the visitor's portrait and obtains the image, replacing traditional physical contact operations and reducing the risk of virus transmission; it then identifies the portrait and stores the data in encrypted form to prevent sensitive information leakage, while combining blockchain technology to ensure data integrity and traceability; it determines whether to open the door based on a preset permission list or user terminal instructions, supports remote authorization and multiple verifications, and balances flexibility and security; finally, it records complete information including the portrait image, time, and door opening status, providing data support for abnormal access tracing and operation and maintenance analysis. The overall solution blocks contact transmission through contactless interaction, uses multiple verifications to reduce the risk of illegal intrusion, adapts dynamic permission management to epidemic prevention and control needs, and uses encrypted storage and distributed architecture to ensure data security, achieving the unity of security management and convenient experience. It is especially suitable for highly sensitive places such as communities and hospitals.

[0051] In some embodiments, the processing steps are as follows: initialize the access control device that is connected to the network for the first time, and the initialization of the device includes: coordinate location registration, region matching and number allocation; send the portrait information submitted by the user to the access control device, and store the portrait information in the permission list.

[0052] Specifically, the access control devices that are connected to the network for the first time are initialized and set up. The physical address of the device is clarified through coordinate location registration, the region is matched to the associated area (such as community, building), and the number assignment ensures the unique identification of the device, providing a basis for subsequent precise management and data traceability; the user's portrait information is sent to the device and stored in the permission list, and an initial authorization database is established to support the face recognition door opening function, avoiding the tedious operation of manually entering permission information, and ensuring that the permission data is synchronized with the device in real time, providing core support for subsequent remote control, dynamic permission adjustment (such as epidemic risk level adaptation) and abnormal access alarms, to ensure system security and management efficiency.

[0053] In some embodiments, the processing steps are as follows: control the access control device to identify the portrait picture, and receive the portrait picture and portrait recognition results from the access control device in real time; encrypt the portrait picture and portrait recognition results and temporarily store them, and send the portrait picture and portrait recognition results to the filing server for storage.

[0054] Specifically, the visitor's portrait is recognized in real time through the access control device, and the recognition results and original portrait data are received simultaneously to ensure the immediacy and accuracy of identity verification; the data is then encrypted and temporarily stored to prevent the leakage or tampering of portrait information during transmission or storage, meeting privacy protection and data security requirements; finally, the encrypted portrait and recognition results are uploaded to the filing server for long-term storage to achieve traceability of access records and provide a complete chain of evidence for abnormal event investigations. At the same time, it complies with government data filing and supervision requirements, strengthens system compliance, and takes into account security management efficiency and legal risk prevention and control.

[0055] In some embodiments, the processing steps are as follows: the portrait image and the portrait recognition result are encrypted in blocks, and a timestamp hash value based on the blockchain is attached; the encrypted data is distributed and stored on multiple filing servers, and only decryption and retrieval are supported through the authorization key of the access control management server.

[0056] Specifically, by encrypting portrait images and recognition results in blocks, it ensures that even if part of the data is intercepted, the complete information cannot be restored, reducing the risk of data leakage; a blockchain-based timestamp hash value is attached to bind each block of encrypted data to an unalterable timestamp to achieve data integrity and verifiability of operation timing, and prevent malicious tampering or forgery; encrypted data is distributed and stored on multiple filing servers, using redundant backups to avoid data loss caused by single point failures, while geographically isolated storage meets data sovereignty compliance requirements; decryption and retrieval require an authorization key dynamically generated by the access control management server, combined with biometrics or dynamic tokens for double verification, to ensure that only legitimate managers can access data on demand, which not only protects privacy and security but also meets the audit requirements of government departments for the retrieval of sensitive information.

[0057] In some embodiments, the processing steps are as follows: if the door opening request is a video dialing request, a QR code is displayed on the access control device; when a video dialing request corresponding to the QR code is received, the user terminal or indoor access control prompts and displays the video; when a door opening instruction is received from the user terminal or the indoor access control, the access control device is controlled to open the door.

[0058] Specifically, a video dialing request is triggered by displaying a QR code on the access control device. After the visitor scans the code, the user terminal or indoor device receives the real-time video image and authorizes the door to be opened, realizing contactless identity verification and remote operation, avoiding the physical contact risks of traditional intercom equipment; the QR code is bound to the visitor's identity and access rights to ensure the legality and controllability of temporary access, and the video call intuitively confirms the visitor's information to reduce the risk of misjudgment; the door opening command is linked to the video data to provide visual evidence for tracing abnormal access, while meeting the needs of contactless management under epidemic prevention and control, and improving security and user experience.

[0059] In some embodiments, the processing steps are as follows: after receiving the video dialing request, the visitor's voice is collected in real time through the microphone of the access control device, the voiceprint features are extracted and compared with the pre-stored voiceprint library; if the voiceprint matching degree exceeds the first threshold, and the visitor's face and the portrait in the permission list match degree exceeds the second threshold, then the door opening instruction is directly sent to the access control management server; if the voiceprint matching fails but the portrait matching succeeds, it is downgraded to sending a door opening confirmation request to the user terminal, and a prompt that the voiceprint matching is unsuccessful is displayed in the user terminal interface.

[0060] Specifically: This technology enhances the reliability of identity verification through dual verification of voiceprint and face: during the video dialing process, the visitor's voiceprint is collected in real time and compared with the pre-stored database. If the voiceprint matching degree exceeds the first threshold (such as ≥90%) and the face matching degree exceeds the second threshold (such as ≥95%), the door opening command is automatically triggered, reducing manual intervention and improving traffic efficiency; if the voiceprint matching fails but the face verification passes, it is downgraded to the user terminal confirming the door opening and prompting the voiceprint abnormality, which not only avoids the security risks caused by a single verification vulnerability, but also prevents the false rejection of legitimate visitors due to voiceprint collection errors, and balances security and fault tolerance; at the same time, the voiceprint and face matching results are fully recorded to provide multi-dimensional biometric evidence for abnormal access tracing, enhancing the system's anti-deception capabilities and data tracing value.

[0061] Preferably, the processing steps are as follows: based on the real-time epidemic risk level of the area where the access control device is located, the validity period of the information in the permission list is automatically adjusted: if it is in a high-risk area, the validity period of the non-resident portrait permission is shortened to a preset time; if it is in a low-risk area, the permission list is automatically updated synchronously to remove expired and unverified portrait data; when it is detected that the cumulative number of failed portrait matches in the permission list exceeds the threshold, the remote door opening function of the corresponding device is automatically frozen, and an alarm is pushed to the associated user terminal.

[0062] Specifically, by obtaining the epidemic risk level of the area where the access control device is located in real time, the validity period of the permission list is dynamically adjusted. The validity period of non-resident portrait permissions in high-risk areas is automatically shortened to reduce the risk of detention of unverified personnel and adapt to the emergency control needs of epidemic prevention and control; low-risk areas regularly update the list and clean up expired and unverified portrait data to avoid redundant information interfering with recognition efficiency and ensure the real-time and accuracy of permission data; when the cumulative number of failed portrait matches in the permission list exceeds the threshold, the remote door opening function of the corresponding device is automatically frozen and an alarm is pushed to the user terminal to prevent illegal intrusion caused by malicious attempts or system vulnerabilities. At the same time, users are reminded to check abnormal access logs in time and mobilize administrators to intervene to achieve active defense and rapid response to security risks, taking into account the dual goals of epidemic prevention and control flexibility and system security.

[0063] The implementation principle of a remote contactless video intercom method for access control in an embodiment of the present application is as follows: the system uses access control equipment to take real-time photos of visitor portraits and identify them, and controls door opening in combination with a preset permission list or remote commands from a user terminal. At the same time, the portrait image, recognition results, and door opening records are encrypted and stored, and block encryption, blockchain timestamps, and distributed storage technologies are used to ensure data integrity and tamper-proofing, effectively solving the problem that traditional access control relies on physical contact and data is easily leaked; the system supports QR code scanning to initiate a video dialing request, and the user terminal or indoor device displays the image in real time after receiving it and authorizes door opening, and combines voiceprint matching technology to achieve multiple verifications. When the voiceprint matches the pre-stored database at a threshold and the face verification is successful, The door will open automatically when someone passes through, otherwise a second confirmation process will be triggered, taking into account both safety and convenience; by obtaining the epidemic risk level of the area where the access control device is located in real time, the validity period of the permission list will be dynamically adjusted. In high-risk areas, the validity period of non-resident permissions will be automatically shortened and abnormal device functions will be frozen. In low-risk areas, invalid data will be regularly cleaned up to achieve flexible and secure permission management to meet the needs of epidemic prevention and control; temporary visitors will generate encrypted QR codes, and access records will be automatically archived and a traceable chain will be generated to simplify the temporary authorization process and improve property management efficiency, ultimately achieving the technical effects of contactless operation to block virus transmission, multiple verifications to improve security, dynamic permissions to strengthen active defense, and data encryption to ensure compliance and traceability.

[0064] Figure 1 FIG. 1 is a flow chart of a method for remote contactless video intercom for access control in one embodiment. It should be understood that although Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows; unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps may be executed in other orders; and Figure 1At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0065] Based on the same technical concept, Figure 3 The embodiment of the present application further provides an access control remote contactless video intercom device, which adopts the following technical solution, and the device includes:

[0066] The shooting module is used to control the access control device to shoot the visitor and obtain a portrait image when receiving a door opening request from the access control device.

[0067] The recognition module is used to recognize the portrait image, obtain the portrait recognition result, and encrypt and store the portrait image and the portrait recognition result.

[0068] The door opening module is used to control the access control device to open the door if the portrait recognition result belongs to the preset permission list or receives a door opening command from the user terminal.

[0069] The recording module is used to control the access control device to record the door opening information. The door opening information includes: portrait image, access time, and whether the door opening is successful.

[0070] In some embodiments, the camera module is further used to initialize the access control device that is connected to the network for the first time, and the initialization of the device includes: coordinate location registration, region matching and number allocation;

[0071] Send the portrait information submitted by the user to the access control device and store the portrait information in the permission list.

[0072] In some embodiments, the recognition module is further used to control the access control device to recognize the portrait image, and to receive the portrait image and portrait recognition results from the access control device in real time;

[0073] The portrait image and the portrait recognition result are encrypted and temporarily stored, and the portrait image and the portrait recognition result are sent to the filing server for storage.

[0074] In some embodiments, the recognition module is further used to encrypt the portrait image and the portrait recognition result in blocks, and append a timestamp hash value based on the blockchain;

[0075] The encrypted data is distributed and stored in multiple filing servers, and can only be decrypted and retrieved through the authorized key of the access control management server.

[0076] In some embodiments, the identification module is further configured to display a QR code on the access control device if the door opening request is a video dialing request;

[0077] When receiving a video dialing request corresponding to the QR code, the user terminal or indoor access control system will issue a reminder and display the video;

[0078] When receiving the door opening command from the user terminal or indoor access control, the access control device is controlled to open the door.

[0079] In some embodiments, the recognition module is further configured to, after receiving a video dialing request, collect the visitor's voice in real time through the microphone of the access control device, extract the voiceprint features, and compare them with a pre-stored voiceprint library;

[0080] If the voiceprint matching degree exceeds the first threshold, and the visitor's face matches the portrait in the permission list, it will directly send the door opening command to the access control management server;

[0081] If the voiceprint matching fails but the portrait matching succeeds, the system will downgrade to sending a door opening confirmation request to the user terminal and display a prompt on the user terminal interface that the voiceprint matching failed.

[0082] In some embodiments, the recognition module is further configured to automatically adjust the validity period of the information in the permission list based on the real-time epidemic risk level of the area where the access control device is located: if the access control device is located in a high-risk area, the validity period of the non-resident portrait permission is shortened to a preset time;

[0083] If you are in a low-risk area, the permission list will be automatically updated and expired unverified portrait data will be removed;

[0084] When it is detected that the cumulative number of failed portrait matches in the permission list exceeds a threshold, the remote door opening function of the corresponding device is automatically frozen and an alarm is pushed to the associated user terminal. The embodiment of the present application also discloses a control device.

[0085] Specifically, the control device includes a memory and a processor, and the memory stores a computer program that can be loaded by the processor and execute the above-mentioned access control remote contactless video intercom method.

[0086] The embodiment of the present application also discloses a computer-readable storage medium.

[0087] Specifically, the computer-readable storage medium stores a computer program that can be loaded by the processor and executed as the above-mentioned access control remote contactless video intercom method. The computer-readable storage medium includes, for example: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0088] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A remote contactless video intercom method for access control, characterized in that: include: Upon receiving a door opening request from an access control device, the access control device is controlled to take a photo of the visitor and obtain a portrait image; Identify the portrait image, obtain a portrait recognition result, and encrypt and store the portrait image and the portrait recognition result; If the portrait recognition result belongs to the preset permission list or a door opening command is received from the user terminal, the access control device is controlled to open the door; The access control device is controlled to record door opening information, where the door opening information includes: the portrait image, access time, and whether the door opening is successful.

2. A door access remote contactless video intercom method according to claim 1, characterized in that: Upon receiving a door opening request from an access control device, controlling the access control device to photograph the visitor and obtaining a portrait image further includes: Initialize the settings of the access control device that is connected to the network for the first time, including: coordinate location registration, region matching and number allocation; Send the portrait information submitted by the user to the access control device, and store the portrait information in the permission list.

3. The access control remote contactless video intercom method according to claim 1, characterized in that: The identifying the portrait image, obtaining the portrait recognition result, and encrypting and storing the portrait image and the portrait recognition result further includes: Controlling the access control device to recognize the portrait image, and receiving the portrait image and the portrait recognition result from the access control device in real time; The portrait image and the portrait recognition result are encrypted and temporarily stored, and the portrait image and the portrait recognition result are sent to a filing server for storage.

4. A door access remote contactless video intercom method according to claim 3, characterized in that: After temporarily storing the encrypted portrait image and the portrait recognition result, the method further includes: Encrypt the portrait image and the portrait recognition result in blocks, and append a timestamp hash value based on the blockchain; The encrypted data is distributed and stored in multiple filing servers, and can only be decrypted and retrieved through the authorized key of the access control management server.

5. The access control remote contactless video intercom method according to claim 1, characterized in that: Upon receiving a door opening request from an access control device, controlling the access control device to photograph the visitor and obtaining a portrait image, the method further includes: If the door opening request is a video dialing request, a QR code is displayed on the access control device; When receiving a video dialing request corresponding to the QR code, the user terminal or indoor access control system will issue a reminder and display the video; When the door opening instruction is received from the user terminal or the indoor access control, the access control device is controlled to open the door.

6. A door access remote contactless video intercom method according to claim 5, characterized in that: After the user terminal or indoor access control system issues a reminder and displays the video when receiving the video dialing request corresponding to the QR code, the method further includes: After receiving the video dialing request, the visitor's voice is collected in real time through the microphone of the access control device, the voiceprint features are extracted and compared with the pre-stored voiceprint library; If the voiceprint matching degree exceeds the first threshold, and the visitor's face matches the portrait in the permission list exceeds the second threshold, a door opening instruction is directly sent to the access control management server; If the voiceprint matching fails but the portrait matching succeeds, the system will downgrade to sending a door opening confirmation request to the user terminal and display a prompt on the user terminal interface that the voiceprint matching failed.

7. A door access remote contactless video intercom method according to claim 6, characterized in that: The method further comprises: Based on the real-time epidemic risk level of the area where the access control device is located, the validity period of the information in the permission list is automatically adjusted: if it is in a high-risk area, the validity period of the non-resident portrait permission is shortened to a preset time; If you are in a low-risk area, the permission list will be automatically updated and expired unverified portrait data will be removed; When it is detected that the cumulative number of failed portrait matches in the permission list exceeds the threshold, the remote door opening function of the corresponding device is automatically frozen and an alarm is pushed to the associated user terminal.

8. A remote contactless video intercom device for access control, characterized in that: The device comprises: The shooting module is used to control the access control device to shoot the visitor and obtain a portrait image when receiving a door opening request from the access control device; An identification module is used to identify the portrait image, obtain a portrait recognition result, and encrypt and store the portrait image and the portrait recognition result; The door opening module is used to control the access control device to open the door if the portrait recognition result belongs to the preset permission list or a door opening command is received from the user terminal; The recording module is used to control the access control device to record the door opening information, and the door opening information includes: the portrait image, the access time, and whether the door opening is successful.

9. A control device, characterized in that: The device comprises: The method comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that A computer program is stored which can be loaded by a processor and execute the method according to any one of claims 1 to 7.

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