Safety communication terminal box for apartment building

By using a monitoring system with multiple cameras and temperature sensors in apartment buildings, combined with artificial intelligence analysis of the internal complexity of the terminal boxes, real-time warnings and adjustments to the monitoring frequency, the system solves the problems of insufficient security and inefficient management of communication terminal boxes in old apartment buildings, and achieves fire prevention and efficient energy management.

CN122120964APending Publication Date: 2026-05-29JIANCHANG TECHNOLOGY GROUP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANCHANG TECHNOLOGY GROUP CO LTD
Filing Date
2025-02-24
Publication Date
2026-05-29

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  • Figure CN122120964A_ABST
    Figure CN122120964A_ABST
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Abstract

The present application provides a kind of safe communication terminal box of apartment building, it is located in door inner side and is arranged in the door periphery, forms the first mobile guide rail of closed rectangle;It is located in door inner side and is formed in the second mobile guide rail inside the closed rectangle formed by the first mobile guide rail;First camera is configured to move along the first mobile guide rail;Second camera is configured to move along the second mobile guide rail;Multiple temperature sensors are located in the inner wall of communication terminal box;Display screen is located in the outer side of door;Processor;Communication circuit;And memory.Through obtaining the complexity score inside, when the difference of complexity score is less than predetermined value, and there is the temperature of other units exceeds the dangerous temperature set to be lower than the temperature of fire, warning information is displayed, not only can manage danger in advance before the fire of certain unit occurs, but also can prevent fire in other units with similar dangerous degree.
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Description

Technical Field

[0001] This invention relates to the field of building safety technology, and in particular to a secure communication terminal box for apartment buildings. Background Technology

[0002] With the growing demand for home automation technology that controls household appliances via wireless communication, and the development of communication technology, the internal structure of communication terminal boxes in apartment buildings is becoming increasingly complex. In particular, apartment buildings are typically over 30 years old, and communication terminal boxes are used for extended periods, resulting in a higher degree of complexity in older apartment buildings.

[0003] In apartment buildings, each unit is equipped with a communication terminal box, and most apartment buildings have densely packed living units. Therefore, when an accident such as a fire occurs in the communication terminal box of one unit, the damage can spread on a large scale, making it imperative to improve the security of communication terminal boxes. Summary of the Invention

[0004] This invention provides a safer communication terminal box for apartment buildings, which solves the technical problems in the event of accidents such as fires in communication terminal boxes.

[0005] Another object of the present invention is to provide a secure communication terminal box for apartment buildings that can manage security in an energy-efficient manner.

[0006] Another object of the present invention is to provide a secure communication terminal box that can remind residents of each unit to increase the security level of the communication terminal box.

[0007] According to one embodiment of the present invention, a secure communication terminal box for an apartment building consisting of multiple units includes: a first movable guide rail located inside the door and arranged around the door perimeter, forming a closed rectangle; a second movable guide rail located inside the door and within the closed rectangle formed by the first movable guide rail; a first camera configured to move along the first movable guide rail; a second camera configured to move along the second movable guide rail; multiple temperature sensors located on the inner wall of the communication terminal box; a display screen located on the outer side of the door; a processor; a communication circuit; and a memory. The processor is configured to: acquire a first image of the inner wall of the communication terminal box with a predetermined pattern captured by the first camera; acquire a second image of the internal space of the communication terminal box captured by the second camera; acquire a complexity score calculated based on the obstruction score of the inner wall of the communication terminal box, the number of internal terminals, and the number of internal cables; confirm the presence of a dangerous temperature based on the measurements from the multiple temperature sensors; and display a warning message on the display screen when the difference in the complexity scores is less than a predetermined value and other units are confirmed to have reached a dangerous temperature.

[0008] The occlusion score of the inner wall of the communication terminal box is calculated based on the number of nodes appearing in the first image from a predetermined pattern; the number of internal terminals of the communication terminal box is obtained by inputting the second image into the first artificial intelligence model; the number of internal cables of the communication terminal box is obtained by inputting the second image into the second artificial intelligence model. The first artificial intelligence model is generated by learning from a first database containing images of the internal space of the communication terminal box and the number of terminals appearing in each image; the second artificial intelligence model is generated by learning from a second database containing images of the internal space of the communication terminal box and the number of cables appearing in each image.

[0009] According to one embodiment of the present invention, the processor is configured to: acquire a first image through a first camera at a first frequency determined based on a complexity score; and acquire a second image through a second camera at a second frequency determined based on a complexity score; wherein the first frequency and the second frequency are monotonically increasing with respect to the complexity score.

[0010] According to one embodiment of the present invention, the communication terminal box further includes a door switch sensor, and the processor is configured to: when the door switch sensor confirms that the door of the communication terminal box has been opened and then closed, acquire a first image through a first camera and acquire a second image through a second camera, thereby updating the complexity score. The door switch sensor may be an optical sensor.

[0011] According to one embodiment of the present invention, the processor is configured to display on a display screen the relative position of the complexity score corresponding to the unit where the communication terminal box is located in a complexity score distribution corresponding to all units of the apartment building.

[0012] According to one embodiment of the present invention, the processor is configured to: display a notification message and an image request interface on a display screen when the complexity score of the communication terminal box of another unit displaying the same warning message decreases within a predetermined first time period after the warning message is displayed; send an image request through a communication circuit in response to the image request interface being selected; receive an internal image before the warning message is displayed in the communication terminal box of another unit, and an internal image after the complexity score decreases, and display it on the display screen.

[0013] The present invention can achieve the following beneficial effects: According to an embodiment of the present invention, the apartment building safety communication terminal box can obtain the internal complexity score. When the difference in complexity score is less than a predetermined value and the temperature of other units exceeds the dangerous temperature set below the temperature at the time of fire, a warning message is displayed. This not only allows for early management of danger before a fire occurs in a certain unit, but also prevents fires in other units with similar levels of danger.

[0014] According to an embodiment of the present invention, the apartment building security communication terminal box can manage security in an energy-efficient manner because the higher the complexity score, the more frequently it is monitored through image analysis, and the lower the complexity score, the lower the monitoring frequency.

[0015] According to an embodiment of the present invention, the apartment building security communication terminal box updates the complexity score when the door is opened and then closed. Therefore, when the complexity score is likely to change, the monitoring cycle can be changed in a timely manner, thereby managing security in an energy-efficient way.

[0016] According to an embodiment of the present invention, an apartment building security communication terminal box can remind residents of each unit to spontaneously improve the security level of the communication terminal box by displaying the relative position of the complexity score of the unit where the communication terminal box is located in the complexity score of all units.

[0017] According to an embodiment of the present invention, an apartment building security communication terminal box can remind residents of each unit to voluntarily improve the security level of the communication terminal box by notifying each unit that there are other units receiving the same warning information and reducing the complexity score of the communication terminal box.

[0018] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 The door of an apartment building security communication terminal box according to various embodiments of the present invention is shown in its open state.

[0022] Figure 2 Examples of inner wall patterns for apartment building security communication terminal boxes according to various embodiments of the present invention are shown.

[0023] Figure 3 The door of an apartment building security communication terminal box according to various embodiments of the present invention is shown in a closed state.

[0024] Figure 4A security management system comprising an apartment building security communication terminal box is shown according to various embodiments of the present invention. Detailed Implementation

[0025] In this specification, the terms "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components. The various embodiments and terminology used herein are not intended to limit the technical features described herein to particular embodiments, but should be understood to cover various modifications, equivalents, or substitutions of the corresponding embodiments. In the description of the drawings, similar reference numerals may be used for similar or related components. Unless the relevant context clearly indicates otherwise, the singular form of the noun corresponding to an item may include one or more of that item. In this specification, expressions such as "A or B," "at least one of A and B," "at least one of A or B," "A, B, or C," "at least one of A, B, and C," and "at least one of A, B, or C" may each include any one of the items listed with the corresponding expression, or all possible combinations thereof. Terms such as "first," "second," "first," or "second" are used only to distinguish the corresponding component from other corresponding components and do not limit the corresponding component in any other way (e.g., in importance or order). When it is mentioned that a component (e.g., the first) is “connected” to another component (e.g., the second), whether or not it is accompanied by terms such as “functionally” or “communically”, it means that the component can be connected to the other component directly (e.g., via a wired connection), wirelessly, or via a third component.

[0026] Various embodiments of this specification can be implemented as software, which includes one or more instructions stored in a machine-readable storage medium (e.g., internal or external memory). For example, a machine's processor can invoke at least one of the one or more instructions stored in the storage medium and execute it. This enables the machine to perform at least one function according to the invoked at least one instruction. The aforementioned one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, "non-transitory" simply means that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves); this term does not distinguish whether data is permanently or temporarily stored in the storage medium.

[0027] According to one embodiment, the methods involved in the various embodiments disclosed in this specification can be included in a computer program product. The computer program product can be traded as a commodity between a seller and a buyer. The computer program product can be distributed in the form of a machine-readable storage medium (e.g., an optical disc read-only memory (CD-ROM)) or through an app store (e.g., the Play Store). TM Online distribution (e.g., downloading or uploading), or direct online distribution between two user terminals (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored in a machine-readable storage medium such as the memory of a manufacturer's server, an app store's server, or a relay server, or may be temporarily generated.

[0028] According to various embodiments, each of the above components (e.g., modules or programs) may include one or more entities, and some of the multiple entities may be arranged separately from the other components. According to various embodiments, one or more of the above components or steps may be omitted, or one or more other components or steps may be added. Alternatively or additionally, multiple components (e.g., modules or programs) may be integrated into one component. In this case, the integrated component may perform one or more functions in the same or similar manner as one or more functions performed by corresponding components among the multiple components prior to integration. According to various embodiments, steps performed by modules, programs, or other components may be performed sequentially, in parallel, repeatedly, or heuristically, or one or more steps may be performed in a different order, omitted, or one or more other steps may be added.

[0029] Figure 1 The door of an apartment building security communication terminal box according to various embodiments of the present invention is shown in its open state. Figure 2 Examples of inner wall patterns for apartment building security communication terminal boxes according to various embodiments of the present invention are shown. Figure 3 The door of an apartment building security communication terminal box according to various embodiments of the present invention is shown in a closed state.

[0030] The communication terminal boxes 100 are arranged in multiple units constituting the apartment. The communication terminal box 100 includes a first moving guide rail 211, a second moving guide rail 212, a first camera 221, a second camera 222, multiple temperature sensors, a display screen 230, a processor 520, a communication circuit 510, and a memory 530.

[0031] The first moving guide rail 211 is located inside the door 200, arranged around the perimeter of the door to form a closed rectangle. The second moving guide rail 212 is located inside the door 200, within the closed rectangle formed by the first moving guide rail.

[0032] The first camera 221 can move along the first moving guide rail 211 to capture images of the inner wall of the communication terminal box. The second camera 222 can move along the second moving guide rail 212 to capture images of the space inside the inner wall of the communication terminal box.

[0033] Multiple temperature sensors can be located on the inner wall of the communication terminal box.

[0034] refer to Figure 2 The inner wall of the communication terminal box can display a predetermined pattern. The pattern displayed on the inner wall of the communication terminal box is identical for all units constituting the apartment. The pattern displayed on the inner wall of the communication terminal box may include multiple nodes or feature points (…). Figure 2 (Intersections of the grid pattern).

[0035] refer to Figure 3 The display screen 23 is located outside the door 200.

[0036] The communication circuit 510 can send information to or receive information from other electronic devices, and the communication types supported by the communication circuit 510 are unrestricted.

[0037] The processor 520 can perform calculations based on data received through the communication circuit 510 and / or data stored in the memory 530, and transmit at least a portion of the calculation results to other electronic devices through the communication circuit 510, or store them in the memory 530. In this specification, the description of the processor 520 performing an operation includes the processor 520 performing calculations with reference to the memory 530, or the processor 520 controlling other components of the communication terminal box 100 (e.g., communication circuitry) to perform the corresponding operation.

[0038] The memory 530 can store a predetermined correlation between the complexity score, described later, and the frequency (i.e., the first frequency) of acquiring the first image via the first camera 221. The first frequency is once per hour when the event of the first camera 221 moving one circle along the first moving guide rail 211 and acquiring the first image occurs once per hour. The memory 530 can also store a predetermined correlation between the complexity score, described later, and the frequency (i.e., the second frequency) of acquiring the second image via the second camera 222. The second frequency is once per hour when the event of the second camera 222 moving one circle along the second moving guide rail 212 and acquiring the second image occurs once per hour. The first frequency is monotonically increasing with the complexity score. The second frequency is monotonically increasing with the complexity score. The first frequency is once per hour when the event of the first camera 221 moving one circle along the first moving guide rail 211 and acquiring the first image occurs once per hour.

[0039] According to various embodiments, the processor 520 can acquire a first image of the inner wall of the communication terminal box with a predetermined pattern using the first camera 221. Then, the processor 520 can acquire a second image of the internal space of the communication terminal box using the second camera 222. Next, the processor 520 can send the first and second images to the management server 1100 via the communication circuit 510.

[0040] The management server 1100 includes a communication circuit 1510, a processor 1520, and a memory 1530. The communication circuit 1510 can send information to or receive information from other electronic devices, and the types of communication supported by the communication circuit 1510 are unrestricted.

[0041] Processor 1520 can perform calculations based on data received via communication circuit 1510 and / or data stored in memory 1530, and transmit at least a portion of the calculation results to other electronic devices via communication circuit 1510, or store them in memory 1530. In this specification, the description of processor 1520 performing an operation includes processor 1520 referring to memory 530 to perform calculations, or processor 1520 controlling other components of management server 1100, such as communication circuit 1530, to perform the corresponding operation.

[0042] The processor 1520 may include a data learning unit 1521 and a data recognition unit 1522. The data learning unit 1521 can generate a first artificial intelligence model and a second artificial intelligence model, which will be described later. The data recognition unit 1522 can preprocess the data and provide the preprocessed data to the data learning unit 1521 for learning. Various machine learning techniques can be used to generate the first and second artificial intelligence models. For example, at least one of recurrent neural networks (RNNs), convolutional neural networks (CNNs), artificial neural networks (ANNs), and Transformer models can be used to learn and generate the first and second artificial intelligence models.

[0043] At least one of the data learning unit 1521 and the data recognition unit 1522 can be implemented as a dedicated hardware chip for artificial intelligence, or it can be implemented as part of an existing general-purpose processor (such as an application processor (AP) or a central processing unit (CPU)) or a dedicated graphics processor.

[0044] According to various embodiments, with Figure 4 Unlike the case where the data learning unit 1521 and the data recognition unit 1522 shown are contained in the management server 1100, the data learning unit 1521 and the data recognition unit 1522 can be installed in different electronic devices.

[0045] In this case, the data learning unit 1521 and the data recognition unit 1522 can be connected to each other by wired or wireless means, so that the model information generated in the data learning unit 1521 can be provided to the data recognition unit 1522, or the data input into the data recognition unit 1522 can be provided to the data learning unit 1521 as additional learning data.

[0046] At least one of the data learning unit 1521 and the data recognition unit 1522 can be implemented as a software module. In this case, the software module can be stored in a computer-readable non-transitory recording medium. At least a portion of the software module can be provided by an operating system (OS) or by a specific application.

[0047] The memory 1530 may include a first database and a second database, which will be described later.

[0048] The processor 1520 of the management server 1100 can calculate the complexity score of the communication terminal box 100 based on the first and second images received from the communication terminal box 100, and send it to the communication terminal box 100. The processor 1520 calculates the complexity score of the communication terminal box 100 based on the occlusion score of the inner wall of the communication terminal box, the number of terminals inside the communication terminal box, and the number of cables inside the communication terminal box.

[0049] To determine the occlusion score of the inner wall of the communication terminal box, the processor 1520 identifies which nodes or feature points in a predetermined pattern formed on the inner wall of the communication terminal box appear in the first image and which do not. Then, the processor 1520 can evaluate the nodes or feature points in the predetermined pattern, assigning a higher occlusion score to those nodes or feature points that appear in the first image are fewer.

[0050] Processor 1520 uses a first artificial intelligence model to determine the number of terminals inside the communication terminal box. Processor 1520 generates the first artificial intelligence model by learning from a first database stored in memory 1530. The first database stores images of the inner wall of the communication terminal box captured by the first camera 221 as it moves one circle along the first moving guide rail 211, along with the number of terminals appearing in these images. The first artificial intelligence model receives the first image captured by the first camera 221 as input as it moves one circle along the first moving guide rail 211, and outputs the number of terminals inside the communication terminal box.

[0051] Processor 1520 uses a second artificial intelligence model to determine the number of cables inside the communication terminal box. Processor 1520 generates the second artificial intelligence model by learning from a second database stored in memory 1530. The second database stores images of the internal space of the communication terminal box captured by the second camera 222 as it moves one circle along the second moving guide rail 212, along with the number of cables appearing in these images. The second artificial intelligence model receives the second images captured by the second camera 222 as input as it moves one circle along the second moving guide rail 212, and outputs the number of cables inside the communication terminal box.

[0052] The method for calculating the complexity score of a communication terminal box 100 based on the obstruction score of the inner wall of the communication terminal box, the number of terminals inside the communication terminal box, and the number of cables inside the communication terminal box is not restricted as long as the obstruction score, the number of terminals inside the communication terminal box, and the number of cables inside the communication terminal box are all higher.

[0053] Processor 1520 sends the calculated complexity score of communication terminal box 100 to communication terminal box 100. Processor 520 retrieves the complexity score from management server 1100.

[0054] Next, the processor 520 determines whether a dangerous temperature exists based on measurements from multiple temperature sensors. If any one of the temperature sensor readings exceeds a predetermined dangerous temperature, the processor 520 can determine that the temperature of the communication terminal box 100 is at a dangerous level. This dangerous temperature can be set to be lower than the temperature that the temperature sensors can measure at the time of a fire.

[0055] Next, when the processor 520 determines that the temperature of the communication terminal box 100 is at a dangerous level, it can send a message to the management server 1100 indicating that the temperature is at a dangerous level. Since the processor 1520 can communicate with the communication terminal boxes 100 equipped in each resident unit of the apartment building, it can update the complexity score and the presence of dangerous temperatures for each communication terminal box 100 in real time. When the processor 1520 detects that a resident unit in the apartment building has a communication terminal box 100 with a dangerous temperature, it will identify other resident units with the same or higher complexity score and can send warning messages to the communication terminal boxes 100 of these identified resident units. After receiving the warning message from the management server 1100, the communication terminal box 100 can display the warning message on the display screen 230.

[0056] According to different embodiments, processor 520 can adjust the monitoring cycle via image acquisition based on a complexity score. Processor 520 can refer to memory 530 to acquire a first image via first camera 221 at a first frequency determined based on the complexity score. Processor 520 can also refer to memory 530 to acquire a second image via second camera 222 at a second frequency determined based on the complexity score.

[0057] According to different embodiments, the processor 520 can update the complexity score accordingly when the door opens and closes. When the processor 520 confirms from the door switch sensors 321 and 322 that the door 200 has opened and then closed, it will acquire a first image through the first camera 221 and a second image through the second camera 222, and then send the acquired first and second images to the management server 1100, and receive the complexity score from the management server 1100 to update the complexity score.

[0058] According to different embodiments, when the management server 1100 sends a complexity score to the communication terminal box 100, it can not only send the complexity score of the communication terminal box 100, but also send the relative position of the complexity score of the communication terminal box 100 in the latest complexity score distribution of all resident units communicating with the management server 1100. The processor 520 can display the received relative position on the display screen 230.

[0059] According to different embodiments, after sending warning information to the communication terminal boxes of multiple residential units, the management server 1100 continuously monitors the complexity scores of the multiple communication terminal boxes that received the warning information. Within a predetermined first time period after sending the warning information to the communication terminal boxes of multiple residential units, when it is confirmed that the complexity score of the first communication terminal box among the communication terminal boxes that received the warning information has decreased, the processor 1521 can send notification information to the other communication terminal boxes among the multiple residential units that received the warning information, excluding the first communication terminal box. The second communication terminal box that sent the notification information can display the notification information and an image request interface on the display screen 230. Then, in response to the image request interface being selected on the display screen of the second communication terminal box, the processor 520 of the second communication terminal box can send an image request to the management server 1100 via the communication circuit.

[0060] Upon receiving an image request, processor 1521 transmits an image sharing request to the first communication terminal box. After receiving consent from the first communication terminal box, it can send the images of the interior of the first communication terminal box before the warning message is displayed, and the images of the interior of the first communication terminal box after the complexity score has decreased, to the second communication terminal box. The processor 520 of the second communication terminal box can display the received images of the interior of the first communication terminal box on the display screen 230.

[0061] As described above, embodiments of the present invention have been illustrated with reference to the accompanying drawings. However, those skilled in the art should understand that the present invention can be implemented in other specific forms without altering its technical concept or essential characteristics. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

Claims

1. A secure communication terminal box for apartment buildings, characterized in that, include: A first moving guide rail (211) is located inside the door (200) and arranged around the door to form a closed rectangle; a second moving guide rail (212) is located inside the door (200) and formed inside the closed rectangle formed by the first moving guide rail. A first camera (221) is configured to move along a first moving guide rail (211); A second camera (222) is configured to move along a second moving guide rail (212); Multiple temperature sensors (311, 312, 313, 314, 315, 316, 317, 318) are located on the inner wall (411, 412, 413, 414) of the communication terminal box; The display screen (230) is located outside the door (200); processor; Communication circuits; as well as memory, The processor is configured as follows: The first image of the inner wall (411, 412, 413, 414) of the communication terminal box with a predetermined pattern is acquired by the first camera (221); A second image of the internal space of the communication terminal box is acquired by the second camera (222); Obtain the complexity score calculated based on the occlusion score of the inner wall of the communication terminal box, the number of terminals inside the communication terminal box, and the number of cables inside the communication terminal box. The presence of dangerous temperatures is confirmed based on measurements from multiple temperature sensors. When the difference in complexity scores is less than a predetermined value, and there are other confirmed residential units that have reached temperatures exceeding the danger level, a warning message is displayed on the display screen (230). Furthermore, the danger temperature is set below the temperature that multiple temperature sensors can measure in the event of a fire; The occlusion score of the inner wall of the communication terminal box is calculated based on the number of nodes appearing in the first image among multiple nodes formed in a predetermined pattern. The number of terminals inside the communication terminal box is obtained by inputting the second image into the first artificial intelligence model; The number of cables inside the communication terminal box was obtained by inputting the second image into the second artificial intelligence model; The first artificial intelligence model is generated by learning from a first database that stores images of the interior space of a communication terminal box and the number of terminals appearing in each image; The second artificial intelligence model is generated by learning from a second database that stores images of the interior space of the communication terminal box and the number of cables appearing in each image.

2. The secure communication terminal box for apartment buildings according to claim 1, characterized in that, in, The processor is configured to: A first image is acquired by a first camera (221) at a first frequency determined based on a complexity score; a second image is acquired by a second camera (222) at a second frequency determined based on a complexity score; the first frequency and the second frequency increase monotonically relative to the complexity score.

3. The secure communication terminal box for apartment buildings according to claim 2, characterized in that, Also includes: Door switch sensors (321, 322), Furthermore, the processor is configured to: when the door (200) of the communication terminal box is confirmed to be opened and then closed by the door switch sensors (321, 322), acquire a first image through the first camera (221) and acquire a second image through the second camera (222), thereby updating the complexity score.

4. The secure communication terminal box for apartment buildings according to claim 3, characterized in that, in, The processor is configured to display on the display screen (230) the relative position of the complexity score corresponding to the resident unit where the communication terminal box is located in the distribution of complexity scores corresponding to all resident units contained in the apartment building.

5. The secure communication terminal box for apartment buildings according to claim 4, Its features are, in, The processor is configured to: During a predetermined first time period after the warning message is displayed, when the complexity score of the communication terminal box of other resident units displaying the same warning message decreases, a notification message and an image request interface are displayed on the display screen (230). In response to the selection of the image request interface, an image request is sent through the communication circuit; the internal image of the communication terminal box of the resident unit before the warning information is displayed in the communication terminal box of the other resident unit, and the internal image of the communication terminal box of the resident unit after the complexity score of the communication terminal box of the resident unit decreases, are received and displayed on the display screen (230).