Contactless real-time audio and video communication method and equipment medium in building intercom

Abstract

The invention discloses a non-contact real-time audio and video communication method and equipment medium in building talkback. The method and the equipment medium are applied to a building talkback terminal located at a doorway and security and protection monitoring equipment located in a security room. Comprising the following steps: establishing two-way communication connection between the building intercom terminal and security and protection monitoring equipment; the building intercom terminal performs real-time movement detection and generates a trigger signal; the building talkback terminal obtains and displays audio data or audio and video data in a security room collected by the security monitoring equipment according to the detected trigger signal; the security and protection monitoring equipment obtains and displays doorway audio and video data collected by the building intercom terminal; and after the security personnel check the audio and video data at the door, the security personnel can communicate with the user of the building talkback terminal through the security monitoring equipment. According to the invention, the RTSP, ONVIF and mobile detection technologies are utilized to realize non-contact automatic audio and video call starting between the building talkback terminal and the security room, and the security and passing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of building intercom, and in particular to a contactless real-time audio and video communication method and equipment medium in building intercom. Background Art

[0002] In today's society, building intercom systems are an important part of residential security protection, and their role is becoming increasingly prominent. The current building intercom scenarios on the market mainly include visitor visits, security monitoring, and emergency calls. When a visitor arrives, the visitor calls the resident downstairs through the door phone, and the resident confirms the call through the indoor extension before unlocking the door; some building intercom systems are also equipped with cameras, which can monitor the corridors, doorways and other areas in real time to detect abnormal situations in time; and when residents encounter emergencies, they can also send a distress signal to the security room through the indoor extension.

[0003] However, the existing building intercom system has the following obvious defects:

[0004] 1. Most traditional building intercom systems require users to start calls through contact operations such as pressing buttons. In the current environment where people attach great importance to hygiene, this contact operation is likely to spread germs and bring potential risks to users' health.

[0005] 2. Response speed needs to be improved. In an emergency, users often need to get in touch with the security room quickly, but traditional building intercom systems may not respond in time, thus affecting the security effect. Finally, the functions are relatively simple, mainly focusing on calling and unlocking functions, and the support for special needs such as contactless operation and real-time audio and video communication is insufficient. Summary of the invention

[0006] In view of this, the purpose of the present invention is to propose a contactless real-time audio and video communication method in building intercom, which uses technologies such as RTSP, ONVIF and motion detection to realize contactless automatic initiation of audio and video calls between building intercom terminals and security rooms, thereby improving the efficiency of security and traffic in residential areas.

[0007] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0008] The present invention provides a contactless real-time audio and video communication method in building intercom, which is applied to a building intercom terminal located at a door and a security monitoring device located in a security room; the method comprises the following steps:

[0009] Step 1: Establish a two-way communication connection between the building intercom terminal and the security monitoring equipment;

[0010] Step 2: The building intercom terminal performs real-time motion detection and generates a trigger signal;

[0011] Step 3: The building intercom terminal obtains and displays the audio data or audio and video data in the security room collected by the security monitoring equipment according to the detected trigger signal;

[0012] Step 4: The security monitoring device obtains and displays the door audio and video data collected by the building intercom terminal;

[0013] Step 5: After the security personnel checks the audio and video data at the door, they can communicate with the user of the building intercom terminal through the security monitoring equipment.

[0014] Furthermore, the step 1 specifically includes:

[0015] Step 11, the building intercom system includes a building intercom terminal with a first screen, a first camera and a first control center installed at the gate, and a security monitoring device with a first screen, a second camera and a second control center located in the security room; the first control center and the second control center both support the ONVIF protocol, and the first control center is used as the ONVIF server, and the second control center is used as the ONVIF client;

[0016] Step 12: When the building intercom system is started, the building intercom terminal is initialized;

[0017] Step 13, the ONVIF client actively initiates a scan in the local area network, and the ONVIF server in the local area network responds to the scan of the ONVIF client, thereby establishing a connection between the ONVIF client and the ONVIF server, and realizing a transmission channel for sending audio and video data from the first control center to the second control center and a transmission channel for sending audio data from the second control center to the first control center;

[0018] Step 14: Both the first control center and the second camera support the RTSP protocol, and a transmission channel is implemented through the RTSP protocol to send the video data of the second camera to the first control center; thereby establishing a two-way transmission channel for audio and video data between the building intercom terminal and the security monitoring equipment.

[0019] Furthermore, the step 2 specifically includes:

[0020] Step 21: Set the motion detection parameters, including the image change threshold and monitoring area.

[0021] Step 22: Turn on the motion detection function of the first camera, perform real-time detection of the monitoring area through the first camera, and send the audio and video data of the door to the first control center;

[0022] Step 23, intercept each frame of the audio and video data at the door, calculate the difference between the previous and next frames, and compare the difference with the image change threshold. If the difference is greater than the image change threshold, it is determined that a user has moved in the monitoring area or an abnormal situation has occurred, and a trigger signal is generated and sent to the first control center; if the difference is not greater than the image change threshold, no processing is performed.

[0023] Furthermore, the step 3 specifically includes:

[0024] Step 31: After receiving the trigger signal, the first control center selects to obtain only the audio mode or the audio and video mode at the same time;

[0025] Step 32: If the audio-only acquisition mode is selected, the first control center initiates a security room audio data acquisition request to the second control center; if the audio and video acquisition mode is selected, the first control center initiates a security room audio data acquisition request to the second control center and initiates a security room video data acquisition request to the second camera;

[0026] Step 33: After receiving the request to obtain the audio data of the security room, the second control center sends the collected audio data in the security room to the first control center through the ONVIF protocol; after receiving the request to obtain the video data of the security room, the second camera sends the collected video data in the security room to the first control center through the RTSP protocol;

[0027] Step 34: When the first control center only receives audio data in the security room, the audio data in the security room is played; when the first control center simultaneously receives audio and video data in the security room, the audio and video data in the security room is rendered and played through the first screen.

[0028] Furthermore, the step 4 specifically includes:

[0029] Step 41: The second control center initiates a request to the first control center for obtaining audio and video data at the door;

[0030] Step 42: After receiving the request for obtaining the audio and video data at the door, the first control center sends the collected audio and video data at the door to the second control center;

[0031] Step 43: The second control center receives the audio and video data at the door, and renders and plays the audio and video data at the door through the second screen.

[0032] Furthermore, the step 5 specifically includes:

[0033] Step 51: After viewing the audio and video data on the second screen, the security personnel in the security room can communicate with the users in the monitoring area through the call button on the second control center.

[0034] Step 52: When the call is over, the building intercom system is restored to the monitoring state and waits for the next motion detection trigger;

[0035] Step 53: The first control center and the second control center record and store the call.

[0036] Furthermore, after step 5, the following steps are further included:

[0037] The building intercom terminal supports accessing a web management page through an IP address, and the building intercom terminal is configured through the web management page, including customizing screen savers and schedules, and the schedule is set according to the working hours of security personnel;

[0038] Activate the motion detection and call functions of the building intercom terminal during the time period corresponding to the schedule;

[0039] During the time period outside the schedule, the motion detection and call functions of the building intercom terminal are not enabled, and the image on the first screen is kept as a customized screen saver image.

[0040] Furthermore, after step 3, the following steps are further included:

[0041] The building intercom terminal also includes a face recognition module, which recognizes the face image of the user in the monitoring area through the face recognition module, and then compares it with the face image in the face image database, and determines the user identity based on the comparison result. If the face image of the user has been stored in the face image database, it means that the user is a resident, and the identity information of the resident is retrieved and sent to the second control center through the first control center; if the face image of the user is not stored in the face image database, it means that the user is a visitor, and the information that the user is a visitor is sent to the second control center through the first control center;

[0042] The building intercom terminal also includes a positioning module, through which the location information of the building intercom terminal is sent to the second control center via the first control center.

[0043] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a contactless real-time audio and video communication method in a building intercom as described above is implemented.

[0044] The present invention also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method for contactless real-time audio and video communication in a building intercom as described above is implemented.

[0045] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0046] The present invention proposes a contactless real-time audio and video communication method in building intercom, which integrates technologies such as RTSP, ONVIF and motion detection. A communication connection between a building intercom terminal and a security monitoring device is established through ONVIF and RTSP technologies. The stability and compatibility of the connection between the devices are enhanced through ONVIF technology, so that the building intercom terminal can work better with the security monitoring device; real-time streaming media transmission is realized through RTSP technology to ensure the fluency and low latency of audio and video communication, so that users can communicate clearly with the security room in real time; the application of motion detection technology can automatically sense changes in the surrounding environment, and when an abnormal situation occurs, contactless real-time audio and video communication is immediately triggered, which greatly improves the security response speed. When the connection is successfully established, both parties start to transmit real-time audio and video data. The first camera of the building intercom terminal transmits the scene picture to the security room with high-definition quality through ONVIF technology, and at the same time, the user's voice is also transmitted to the security room through the audio device. The security room can clearly see and hear the scene through the second screen (display) and the speaker, and can manage the communication through the operation control button, such as adjusting the volume, switching the picture, recording the video, etc.

[0047] 1. When the communication connection between the building intercom terminal and the security monitoring equipment is established, the first camera of the building intercom terminal will monitor the monitoring area in real time, and after receiving the trigger signal, the audio and video data transmission between the building intercom terminal and the security monitoring equipment will be realized to complete the contactless audio and video call. The user can quickly start the call without touching the device, which is convenient and fast, and can avoid the health hazards caused by contact operation, providing users with a safer and more hygienic use environment.

[0048] 2. This method can realize the contactless automatic start of audio and video calls between the building intercom terminal and the security room. The ONVIF and RTSP technologies are used to establish the communication connection between the building intercom terminal and the security monitoring equipment. The connection can be established quickly, so that the security room can receive the alarm information and respond in the first time, which greatly improves the emergency handling capability and the efficiency of security and traffic in the residential area. At the same time, the real-time audio and video communication function allows the security room to understand the on-site situation more intuitively and improve the security response speed and processing capability.

[0049] 3. The present invention not only has the functions of contactless operation and real-time audio and video communication, but also can interact with the security room in a variety of ways. For example, users can clearly display the on-site situation through the full-screen camera, the operator call function is convenient and fast, and there are control buttons for easy operation. At the same time, functions such as custom screen savers and schedules can be set to meet the personalized needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative work.

[0051] Figure 1 The present invention provides a flow chart of the implementation of a contactless real-time audio and video communication method in a building intercom.

[0052] Figure 2 It is a schematic diagram of a data transmission channel between a building intercom terminal and a security monitoring device provided by an embodiment of the present invention.

[0053] Figure 3 It is a schematic diagram of an electronic device provided by an embodiment of the present invention.

[0054] Figure 4 It is a schematic diagram of a computer-readable storage medium provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present invention, but are not intended to limit the scope of the present invention. Similarly, the following examples are only partial embodiments of the present invention rather than all embodiments, and all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0056] See also Figure 1 and Figure 2 The present invention provides a contactless real-time audio and video communication method in a building intercom, which is applied to a building intercom terminal located at a door and a security monitoring device located in a security room; the method comprises the following steps:

[0057] Step 1: Establish a two-way communication connection between the building intercom terminal and the security monitoring equipment;

[0058] In this embodiment, the step 1 specifically includes:

[0059] Step 11, the building intercom system includes a building intercom terminal with a first screen, a first camera and a first control center installed at the gate, and a security monitoring device with a first screen, a second camera and a second control center located in the security room; the first control center and the second control center both support the ONVIF protocol, and the first control center is used as the ONVIF server, and the second control center is used as the ONVIF client;

[0060] Step 12: When the building intercom system is started, the building intercom terminal is initialized; when the system is started, the initialization process can ensure that the system can enter the operating state correctly and safely;

[0061] Step 13, the ONVIF client actively initiates a scan within the LAN, and the ONVIF server located in the LAN responds to the scan of the ONVIF client, thereby establishing a connection between the ONVIF client and the ONVIF server, and realizing the transmission channel for sending audio and video data from the first control center to the second control center and the transmission channel for sending audio data from the second control center to the first control center; using the ONVIF protocol for communication connection can ensure the stability and compatibility of the connection. The ONVIF protocol realizes automatic discovery of devices through the WS-Discovery mechanism. New devices can actively broadcast their existence or respond to search requests from other devices. This mechanism enables the system to quickly identify and add new devices, thereby improving connection speed and efficiency. ONVIF provides a series of standardized network service interfaces, including device management and media configuration; this standardization makes communication between different devices more efficient and reduces connection delays caused by device compatibility issues.

[0062] Step 14, the first control center and the second camera both support the RTSP protocol, and the transmission channel for sending the video data of the second camera to the first control center is realized through the RTSP protocol; then a two-way transmission channel for audio and video data is established between the building intercom terminal and the security monitoring equipment; since the ONVIF protocol can only realize the ONVIF client to obtain the audio and video data of the ONVIF server and the ONVIF server to obtain the audio data of the ONVIF client, it cannot realize the ONVIF server to obtain the video data of the ONVIF client. Therefore, it is also necessary to use the RTSP protocol to realize the ONVIF server to obtain the video data of the ONVIF client. The RTSP protocol is used to efficiently transmit real-time audio and video data, which can provide faster connection speeds and lower delays.

[0063] This process ensures that the building intercom terminal can have a stable connection and data exchange with the security monitoring equipment.

[0064] Step 2: The building intercom terminal performs real-time motion detection and generates a trigger signal;

[0065] In this embodiment, step 2 specifically includes:

[0066] Step 21, set the parameters of motion detection, including the image change threshold and monitoring area; this ensures that valuable activities can be accurately captured. Among them, the image change threshold (sensitivity) is a configurable trigger threshold. When the first camera performs image motion detection, it determines whether to trigger a motion event based on the frame difference between the previous and next frames. When the sensitivity is high, even a small image change may trigger motion detection; when the sensitivity is low, a large image change is required to trigger it. The monitoring area can also be set to monitor the surrounding environment within a specific range.

[0067] Step 22: After the building intercom terminal and the security monitoring device are connected, the motion detection function of the first camera is activated. The motion detection function of the first camera is turned on, the monitoring area is detected in real time through the first camera, and the audio and video data of the door are sent to the first control center;

[0068] Step 23, intercept each frame of the audio and video data at the door, calculate the difference between the previous and next frames, and compare the difference with the image change threshold. If the difference is greater than the image change threshold, it is determined that a user has moved in the monitoring area or an abnormal situation has occurred, and a trigger signal is generated and sent to the first control center. The trigger signal can be a specific electrical signal or software instruction, which will be quickly transmitted to the first control center of the building intercom terminal; if the difference is not greater than the image change threshold, no processing is performed.

[0069] Step 3: The building intercom terminal obtains and displays the audio data or audio and video data in the security room collected by the security monitoring equipment according to the detected trigger signal;

[0070] In this embodiment, step 3 specifically includes:

[0071] Step 31: After receiving the trigger signal, the first control center selects to obtain only the audio mode or the audio and video mode at the same time;

[0072] Step 32: If the audio-only acquisition mode is selected, the first control center initiates a security room audio data acquisition request to the second control center; if the audio and video acquisition mode is selected, the first control center initiates a security room audio data acquisition request to the second control center and initiates a security room video data acquisition request to the second camera;

[0073] Step 33, after the second control center receives the request to obtain the audio data of the security room, it sends the collected audio data in the security room to the first control center through the ONVIF protocol; after the second camera receives the request to obtain the video data of the security room, it sends the collected video data in the security room to the first control center through the RTSP protocol; RTSP technology, as a real-time streaming media transmission protocol, can ensure fast and stable transmission of requests.

[0074] Step 34: When the first control center only receives audio data in the security room, the audio data in the security room is played; when the first control center simultaneously receives audio and video data in the security room, the audio and video data in the security room are rendered and played through the first screen. The audio data playback function in the security room and the video data display function in the security room on the first screen are realized.

[0075] In this embodiment, the step 3 further includes:

[0076] The building intercom terminal also includes a face recognition module (with a face recognition function), which performs face image recognition on users in the monitoring area through the face recognition module, and then compares the face images with the face images in the face image database, and determines the user identity based on the comparison result. If the face image of the user has been stored in the face image database, it means that the user is a resident, and the identity information of the resident is retrieved and sent to the second control center through the first control center; if the face image of the user is not stored in the face image database, it means that the user is a visitor, and the information that the user is a visitor is sent to the second control center through the first control center; the user's identity information is identified through the face recognition function, and the information is reported to the second control center by the first control center through the ONVIF protocol.

[0077] The building intercom terminal also includes a positioning module, through which the location information of the building intercom terminal is sent to the second control center through the first control center. According to the setting when the first camera is installed, the location information is determined by reporting the actual location or building number of the first camera, and the information is reported by the first control center to the second control center through the ONVIF protocol;

[0078] The situation triggered by motion detection is regarded as an event type, and the information is reported from the first control center to the second control center through the ONVIF protocol.

[0079] Reporting this information to the second control center can help security personnel in the security room quickly understand the on-site situation and make accurate responses based on the information.

[0080] Step 4: The security monitoring device obtains and displays the door audio and video data collected by the building intercom terminal;

[0081] In this embodiment, step 4 specifically includes:

[0082] Step 41: The second control center initiates a request to the first control center for obtaining audio and video data at the door;

[0083] Step 42: After receiving the request for obtaining the audio and video data at the door, the first control center sends the collected audio and video data at the door to the second control center;

[0084] Step 43: The second control center receives the audio and video data at the door, and renders and plays the audio and video data at the door through the second screen. The second control center obtains the audio and video data at the door through the ONVIF protocol, and the specific process is as follows:

[0085] The audio and video address of the corresponding outdoor station is obtained through ONVIF protocol interaction, and then the audio and video data of the door is obtained through the audio and video address, and the relevant information is displayed on the second screen in the security room, and an alarm is issued to alert the security personnel. The security personnel can quickly understand the on-site situation through the second screen and audio, and freely decide whether to communicate with the on-site users.

[0086] Step 5: After the security personnel checks the audio and video data at the door, they can communicate with the user of the building intercom terminal through the security monitoring equipment.

[0087] In this embodiment, step 5 specifically includes:

[0088] Step 51: After viewing the audio and video data on the second screen, the security personnel in the security room can use the call button on the second control center to communicate with the user in the monitoring area. In the communication interaction stage, the user and the security personnel can communicate in two directions. The user can describe the situation on the scene to the security personnel, make requests or seek help. The security personnel can give guidance, issue instructions or take corresponding actions according to the situation. For example, if it is a visitor, the security personnel can confirm the identity of the visitor through communication and remotely unlock the door; if it is an emergency, the security personnel can quickly organize rescue forces and comfort the user through communication.

[0089] Step 52: When the call is over, the building intercom system is restored to the monitoring state and waits for the next motion detection trigger; when the problem is solved or the communication is over, the user or security personnel can choose to hang up the communication. Before hanging up the communication, both parties can confirm to ensure that all matters have been handled. Once the communication is over, the system will return to the monitoring state and wait for the next motion detection trigger or other communication needs.

[0090] Step 53: The first control center and the second control center record and store the call for subsequent query and analysis.

[0091] When motion detection is triggered, the second control center in the security room will automatically obtain the audio and video data of the corresponding building intercom terminal. At the same time, the building intercom terminal will also obtain the audio data in the security room and the video data collected by the second camera through the ONVIF protocol and RTSP protocol respectively. The building intercom terminal can also choose to obtain only the audio data in the security room through the ONVIF protocol. If the security personnel want to speak, they can directly click the "Speak" button on the second control center. At this time, the voice of the security personnel will be transmitted to the user of the building intercom terminal, thereby establishing a two-way audio and video communication connection based on the two-way video, realizing contactless audio and video intercom.

[0092] In this embodiment, after step 5, the following steps are further included:

[0093] In addition to the basic communication functions, the present invention also provides users with a wealth of personalized settings and function expansion options. Users can implement these functions through web configuration. The building intercom terminal supports accessing the web management page through the IP address, and the building intercom terminal is configured through the web management page, including customizing the screen saver and schedule, and the schedule is set according to the working hours of the security personnel;

[0094] Activate the motion detection and call functions of the building intercom terminal during the time period corresponding to the schedule;

[0095] During the time period outside the schedule, the motion detection and call functions of the building intercom terminal are not enabled, and the image on the first screen is kept as a customized screen saver image.

[0096] Users can set up custom screen savers and schedules as needed; users can choose to enable motion detection and communication functions during a specific time period to avoid unnecessary interference; or choose different screen saver styles to meet personalized needs. In addition, the system can also continuously add new functions and services such as face recognition and intelligent alarm through software upgrades and function expansion to improve the security and convenience of the system.

[0097] like Figure 3 As shown, an embodiment of the present invention further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the above-mentioned contactless real-time audio and video communication method in a building intercom is implemented.

[0098] like Figure 4As shown, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the above-mentioned contactless real-time audio and video communication method in a building intercom is implemented.

[0099] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0100] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0101] The above descriptions are only some embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A contactless real-time audio and video communication method in building intercom, characterized in that: Applied to the building intercom terminal at the door and the security monitoring equipment in the security room; including the following steps: Step 1: Establish a two-way communication connection between the building intercom terminal and the security monitoring equipment; Step 2: The building intercom terminal performs real-time motion detection and generates a trigger signal; Step 3: The building intercom terminal obtains and displays the audio data or audio and video data in the security room collected by the security monitoring equipment according to the detected trigger signal; Step 4: The security monitoring device obtains and displays the door audio and video data collected by the building intercom terminal; Step 5: After the security personnel checks the audio and video data at the door, they can communicate with the user of the building intercom terminal through the security monitoring equipment.

2. The contactless real-time audio and video communication method in building intercom as claimed in claim 1, characterized in that: The step 1 specifically includes: Step 11, the building intercom system includes a building intercom terminal with a first screen, a first camera and a first control center installed at the gate, and a security monitoring device with a first screen, a second camera and a second control center located in the security room; the first control center and the second control center both support the ONVIF protocol, and the first control center is used as the ONVIF server, and the second control center is used as the ONVIF client; Step 12: When the building intercom system is started, the building intercom terminal is initialized; Step 13, the ONVIF client actively initiates a scan in the local area network, and the ONVIF server in the local area network responds to the scan of the ONVIF client, thereby establishing a connection between the ONVIF client and the ONVIF server, and realizing a transmission channel for sending audio and video data from the first control center to the second control center and a transmission channel for sending audio data from the second control center to the first control center; Step 14: Both the first control center and the second camera support the RTSP protocol, and a transmission channel is implemented through the RTSP protocol to send the video data of the second camera to the first control center; thereby establishing a two-way transmission channel for audio and video data between the building intercom terminal and the security monitoring equipment.

3. The contactless real-time audio and video communication method in building intercom as claimed in claim 2, characterized in that: The step 2 specifically includes: Step 21: Set the motion detection parameters, including the image change threshold and monitoring area. Step 22: Turn on the motion detection function of the first camera, perform real-time detection of the monitoring area through the first camera, and send the audio and video data of the door to the first control center; Step 23, intercept each frame of the audio and video data at the door, calculate the difference between the previous and next frames, and compare the difference with the image change threshold. If the difference is greater than the image change threshold, it is determined that a user has moved in the monitoring area or an abnormal situation has occurred, and a trigger signal is generated and sent to the first control center; if the difference is not greater than the image change threshold, no processing is performed.

4. The contactless real-time audio and video communication method in building intercom as claimed in claim 3, characterized in that: The step 3 specifically includes: Step 31: After receiving the trigger signal, the first control center selects to obtain only the audio mode or the audio and video mode at the same time; Step 32: If the audio-only acquisition mode is selected, the first control center initiates a security room audio data acquisition request to the second control center; if the audio and video acquisition mode is selected, the first control center initiates a security room audio data acquisition request to the second control center and initiates a security room video data acquisition request to the second camera; Step 33: After receiving the request to obtain the audio data of the security room, the second control center sends the collected audio data in the security room to the first control center through the ONVIF protocol; after receiving the request to obtain the video data of the security room, the second camera sends the collected video data in the security room to the first control center through the RTSP protocol; Step 34: When the first control center only receives audio data in the security room, the audio data in the security room is played; when the first control center simultaneously receives audio and video data in the security room, the audio and video data in the security room is rendered and played through the first screen.

5. The contactless real-time audio and video communication method in building intercom as claimed in claim 1, characterized in that: The step 4 specifically includes: Step 41: The second control center initiates a request to the first control center for obtaining audio and video data at the door; Step 42: After receiving the request for obtaining the audio and video data at the door, the first control center sends the collected audio and video data at the door to the second control center; Step 43: The second control center receives the audio and video data at the door, and renders and plays the audio and video data at the door through the second screen.

6. The contactless real-time audio and video communication method in building intercom as claimed in claim 1, characterized in that: The step 5 specifically includes: Step 51: After viewing the audio and video data on the second screen, the security personnel in the security room can communicate with the users in the monitoring area through the call button on the second control center. Step 52: When the call is over, the building intercom system is restored to the monitoring state and waits for the next motion detection trigger; Step 53: The first control center and the second control center record and store the call.

7. The contactless real-time audio and video communication method in building intercom as claimed in claim 1, characterized in that: After step 5, the following steps are also included: The building intercom terminal supports accessing a web management page through an IP address, and the building intercom terminal is configured through the web management page, including customizing screen savers and schedules, and the schedule is set according to the working hours of security personnel; Activate the motion detection and call functions of the building intercom terminal during the time period corresponding to the schedule; During the time period outside the schedule, the motion detection and call functions of the building intercom terminal are not enabled, and the image on the first screen is kept as a customized screen saver image.

8. The contactless real-time audio and video communication method in building intercom as claimed in claim 1, characterized in that: The step 3 further includes: The building intercom terminal also includes a face recognition module, which recognizes the face image of the user in the monitoring area through the face recognition module, and then compares it with the face image in the face image database, and determines the user identity based on the comparison result. If the face image of the user has been stored in the face image database, it means that the user is a resident, and the identity information of the resident is retrieved and sent to the second control center through the first control center; if the face image of the user is not stored in the face image database, it means that the user is a visitor, and the information that the user is a visitor is sent to the second control center through the first control center; The building intercom terminal also includes a positioning module, through which the location information of the building intercom terminal is sent to the second control center via the first control center.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the contactless real-time audio and video communication method in building intercom as described in any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, a contactless real-time audio and video communication method in a building intercom as described in any one of claims 1 to 8 is implemented.

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