Intelligent ventilation wall cabinet and control system thereof

Abstract

The application relates to the technical field of intelligent home distributed control, in particular to a smart ventilation wall cabinet and a control system thereof, which comprises a wall cabinet body and a smart ventilation control system, the inner cavity of the wall cabinet body is divided into multiple independent storage compartments, each compartment is provided with an independent environment collection point and a ventilation execution mechanism; the smart ventilation control system comprises a central control unit, a distributed field control substation, a field bus communication module, a multi-modal environment sensing unit, a distributed ventilation execution unit, a man-machine interaction unit, an intelligent home linkage unit, a fault self-diagnosis unit and a power management unit, realizes accurate ventilation regulation of multiple areas in the cabinet, can match different ventilation strategies according to different stored articles, is compatible with whole-house intelligent home linkage, has the functions of self-diagnosis of equipment states and risk early warning, and has the functions of improving the technical problems of low ventilation control precision, poor operation reliability, insufficient fine prevention and control capability and weak scene adaptability of the intelligent wall cabinet.

Description

Technical Field

[0001] This invention relates to the technical field of distributed control in smart homes, and in particular to a smart ventilation cabinet and its control system. Background Technology

[0002] With the rapid development of smart home technology, users' functional needs for home storage devices have evolved from basic storage to intelligent, sophisticated, and secure solutions. As a core storage device in the home environment, the ventilation control performance of wall cabinets directly determines the safety, preservation, and lifespan of stored items. This is especially true for items sensitive to their storage environment, such as clothing, leather goods, paper documents, and delicate jewelry; precise and reliable ventilation control is a key performance indicator.

[0003] Existing Chinese invention patent CN118415450A discloses a smart wardrobe that uses a movable exhaust fan structure to ventilate the wardrobe and prevent clothes from getting moldy. However, in actual engineering applications and user use, this solution still has the following core technical defects:

[0004] 1. The above solution adopts an open-loop overall mechanical ventilation control, which can only realize the overall reciprocating movement of the exhaust fan for ventilation. It cannot realize independent closed-loop ventilation control for different storage areas in the cabinet. It cannot target areas with high humidity or odors, resulting in low ventilation efficiency and high energy consumption. At the same time, the single-node centralized control mode means that the failure of a single actuator can easily lead to the paralysis of the entire ventilation system, resulting in poor operational reliability.

[0005] 2. The above solution only provides a rough monitoring of the overall environment inside the cabinet. It cannot collect key parameters such as temperature and humidity, VOC concentration, and mold risk factors in different storage areas in real time. It cannot match different ventilation control strategies for different stored items, nor can it predict storage environment risks in advance. It can only be dealt with passively after the environment deteriorates, which is difficult to meet the refined storage needs of high-end users.

[0006] 3. The above solution does not have a self-diagnosis and emergency support mechanism for equipment failure, cannot monitor the equipment operating status in real time, cannot provide timely warnings and emergency response when the equipment is abnormal, and does not have an emergency power supply design for power outages. After the main power is interrupted, the storage environment may become uncontrollable and the items may be damaged. The system stability and scenario adaptability are insufficient. Summary of the Invention

[0007] In order to improve the technical problems of low ventilation control accuracy, poor operational reliability, insufficient refined prevention and control capabilities, and weak scene adaptability of intelligent wall cabinets, this application provides an intelligent ventilation wall cabinet and its control system.

[0008] The intelligent ventilation wall cabinet and its control system provided in this application adopt the following technical solution:

[0009] A smart ventilation cabinet and its control system include a cabinet body and a smart ventilation control system integrated into the cabinet body. The inner cavity of the cabinet body is divided into at least two independent storage compartments. The smart ventilation control system includes a central control unit, a fieldbus communication module, at least two sets of distributed field control substations, a multimodal environment sensing unit, a distributed ventilation execution unit, a human-machine interaction unit, a smart home linkage unit, a fault self-diagnosis unit, and a power management unit.

[0010] The central control unit is located in the main control compartment of the cabinet body, serving as the core control hub of the system;

[0011] Each group of distributed field control substations corresponds to a storage cell, and the distributed field control substations are bidirectionally connected to the central control unit through a fieldbus communication module.

[0012] The multimodal environmental sensing unit includes several groups of environmental sensing components. Each group of environmental sensing components is installed in a corresponding storage cell. The signal output terminal of the environmental sensing component is electrically connected to the signal input terminal of the corresponding distributed field control substation.

[0013] The distributed ventilation execution unit includes a main ventilation module and several sets of inter-cell ventilation execution mechanisms. The control terminal of the main ventilation module is electrically connected to the central control unit. Each set of inter-cell ventilation execution mechanisms corresponds to a storage cell. The control terminal of the inter-cell ventilation execution mechanism is electrically connected to the corresponding distributed field control substation.

[0014] The human-computer interaction unit and the smart home linkage unit are both bidirectionally connected to the central control unit.

[0015] The fault self-diagnosis unit is integrated inside the central control unit, and the fault self-diagnosis unit is bidirectionally connected to each functional unit of the system through the fieldbus communication module.

[0016] The output terminals of the power management unit are electrically connected to each power-consuming unit of the system.

[0017] Preferably, the fieldbus communication module adopts a CAN bus or RS485 industrial-grade fieldbus architecture, and is also compatible with the TCP / IP Ethernet communication protocol. The number of communication nodes of the fieldbus communication module matches the number of distributed field control substations, and each communication node is configured with an independent address code and redundant communication links.

[0018] Preferably, the environmental sensing components include a temperature and humidity sensor, a VOC gas sensor, a mold spore sensor, and a PM2.5 particulate matter sensor. The temperature and humidity sensor, VOC gas sensor, mold spore sensor, and PM2.5 particulate matter sensor are all electrically connected to the corresponding distributed field control substations through an analog-to-digital conversion module.

[0019] Preferably, the main ventilation module includes a variable frequency ventilation fan and a temperature and humidity control component, and the control terminals of the variable frequency ventilation fan and the temperature and humidity control component are both electrically connected to the central control unit.

[0020] Preferably, the inter-compartment ventilation actuator includes an electric air valve and an internal circulation fan, and the control terminals of the electric air valve and the internal circulation fan are both electrically connected to the corresponding distributed field control substation.

[0021] Preferably, the human-machine interaction unit includes a touch screen, a voice interaction module, and an emergency physical button. The touch screen is used to display the system operating status and parameter settings, the voice interaction module is used to realize voice control and status broadcast, and the emergency physical button is used for system emergency start / stop and fault reset.

[0022] Preferably, the smart home linkage unit is compatible with Matter, Zigbee 3.0, and WiFi 6 wireless communication protocols, and the smart home linkage unit is equipped with a standardized data interaction interface for linkage control with the terminal devices of the whole-house smart home system.

[0023] Preferably, the distributed field control substation uses a microcontroller as the control core. Each distributed field control substation is only responsible for the field data acquisition and actuator control in the corresponding storage cell. The failure of a single distributed field control substation does not affect the normal operation of other substations.

[0024] Preferably, the fault self-diagnosis unit includes a parameter acquisition module, a fault judgment module, an early warning output module, and an emergency control module. The parameter acquisition module is used to collect the operating data of all nodes of the system in real time. The fault judgment module is used to identify the fault type and fault level. The early warning output module is used to output fault early warning information. The emergency control module is used to execute the emergency control strategy corresponding to the fault level.

[0025] Preferably, the power management unit includes a mains power supply module, a backup lithium battery module, a power switching module, and an overcurrent and overvoltage protection module. The input terminal of the mains power supply module is connected to the mains power grid. The backup lithium battery module is connected in parallel with the mains power supply module through the power switching module. The control terminal of the power switching module is electrically connected to the central control unit. The overcurrent and overvoltage protection module is connected in series with the output terminal of the power management unit.

[0026] In summary, this application includes the following beneficial technical effects:

[0027] 1. The present invention provides an intelligent ventilation cabinet and its control system, which realizes centralized global management through a central control unit and distributed field control substations realize decentralized field control between corresponding storage cells. It improves the defects of open-loop mechanical control in the prior art, and can realize independent closed-loop ventilation control between each storage cell. It can handle local abnormal environments in a targeted manner, improve ventilation efficiency, reduce system energy consumption, and at the same time, the failure of a single node does not affect the overall operation of the system, thus improving the reliability of the system operation.

[0028] 2. This invention uses a distributed multimodal environmental sensing unit to achieve real-time differentiated collection of environmental parameters between storage cells. It can adapt corresponding ventilation control strategies for different stored items to achieve refined storage management. Furthermore, it uses a mold spore sensor to detect mold risk factors in advance, achieving proactive risk prevention and control. This changes the passive handling mode of existing technologies and ensures the safety and lifespan of stored items.

[0029] 3. This invention features a smart home linkage unit compatible with mainstream communication protocols, enabling scene linkage with smart home devices throughout the house. It adapts to the user's living environment and adjusts accordingly, aligning with the technological development direction of the smart home field. It possesses excellent compatibility and scalability, and integrates a fault self-diagnosis unit and an emergency power supply module. This allows for real-time monitoring of device operating status and automatic execution of fault warnings and emergency controls to prevent damage to stored items due to device malfunctions or power outages, thereby improving system stability and scene adaptability. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the wall cabinet body in the embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the overall architecture of the intelligent ventilation control system in the embodiments of this application;

[0032] Figure 3 This is a flowchart illustrating the fault self-diagnosis unit in an embodiment of this application.

[0033] Explanation of reference numerals in the attached diagram: 1. Wall cabinet body; 11. Storage compartment; 2. Central control unit; 3. Fieldbus communication module; 4. Distributed field control substation; 41. Multimodal environmental sensing unit; 42. Distributed ventilation execution unit; 5. Human-machine interaction unit; 6. Smart home linkage unit; 7. Fault self-diagnosis unit; 8. Power management unit. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] This application discloses an intelligent ventilation cabinet and its control system. The intelligent ventilation cabinet and its control system include a cabinet body 1 and an intelligent ventilation control system integrated within the cabinet body 1.

[0037] Reference Figure 1 The basic structure of the wall cabinet body 1 adopts the conventional home cabinet structure. The inner cavity is divided into at least two independent storage compartments 11 by vertical and horizontal partitions, which are used to store different types of items and adapt to different ventilation control needs. Each storage compartment 11 is equipped with an independent environmental sampling point and ventilation actuator. A sealed main control compartment is set at the top of the cabinet for installing the core hardware of the control system. A through main ventilation duct is set at the back of the cabinet. Each storage compartment 11 is connected to the main ventilation duct through a branch duct, providing basic airflow support for the ventilation system.

[0038] Reference Figure 2 The intelligent ventilation control system includes a central control unit 2, a fieldbus communication module 3, at least two sets of distributed field control substations 4, a multimodal environmental sensing unit 41, a distributed ventilation execution unit 42, a human-machine interaction unit 5, a smart home linkage unit 6, a fault self-diagnosis unit 7, and a power management unit 8.

[0039] Central Control Unit 2: Adopting an edge computing main control chip based on the ARM Cortex-A7 architecture, with a built-in embedded Linux operating system, it is installed in the main control compartment at the top of the cabinet body 1. As the core control hub of the system, it is responsible for global strategy management, data aggregation and processing, linkage logic execution, fault diagnosis and emergency control. The Central Control Unit 2 has a built-in 8GB eMMC storage, which can store at least 12 months of environmental parameters and system operation data. It supports offline operation without relying on cloud servers, ensuring user privacy and system response speed.

[0040] Fieldbus communication module 3: Adopts CANFD industrial-grade fieldbus architecture, with high communication speed and compatibility with TCP / IP Ethernet communication protocol. The number of communication nodes of fieldbus communication module 3 matches the number of distributed field control substations 4, and corresponding communication nodes are set. Each communication node is configured with independent address encoding and redundant communication links. The failure of a single node will not affect the normal communication of other nodes.

[0041] Distributed field control substation 4: Each distributed field control substation 4 corresponds to one storage cell 11. It uses a microcontroller as the control core. The distributed field control substation 4 is bidirectionally connected to the central control unit 2 through the fieldbus communication module 3. It is responsible for the environmental parameter acquisition of the corresponding storage cell 11, the field control of the ventilation actuator, the real-time data upload and command reception and execution, realizing distributed field control and centralized management. When a single distributed field control substation 4 fails, only the function of the corresponding storage cell 11 is affected, and other cells can operate normally, ensuring the overall stability of the system.

[0042] Multimodal environmental sensing unit 41: includes environmental sensing components. Each set of environmental sensing components is installed at an environmental acquisition point in a storage cell 11. The signal output terminal of the environmental sensing component is electrically connected to the signal input terminal of the corresponding distributed field control substation 4. Each set of environmental sensing components includes a temperature and humidity sensor, a VOC gas sensor, a mold spore sensor, and a PM2.5 particulate matter sensor. All sensors are electrically connected to the corresponding distributed field control substation 4 through an analog-to-digital conversion module. It can collect key environmental parameters such as temperature, humidity, VOC concentration, mold spore concentration, and PM2.5 concentration in the corresponding storage cell 11 in real time and upload the collected data to the central control unit 2 in real time.

[0043] Among them, the mold spore sensor uses the principle of laser scattering to detect the concentration of mold spores in the air in advance, predict the risk of mold growth, and achieve proactive prevention and control.

[0044] Distributed ventilation execution unit 42: includes a main ventilation module and a compartment ventilation execution mechanism corresponding to the storage compartment 11.

[0045] Main ventilation module: Installed at the end of the main ventilation duct, it includes a variable frequency ventilation fan and a temperature and humidity control component. The air inlet of the variable frequency ventilation fan is connected to the main ventilation duct, and the air outlet is connected to the outdoor or indoor fresh air system. The control terminal of the variable frequency ventilation fan is electrically connected to the central control unit 2, which can adjust the fan speed according to system requirements to achieve variable frequency energy-saving operation. The control terminal of the temperature and humidity control component is electrically connected to the central control unit 2, which can adjust the temperature and humidity of the ventilation airflow in high humidity environments to improve the anti-mildew effect.

[0046] The ventilation actuator for each compartment includes an electric air valve and a silent internal circulation fan. The electric air valve is installed in the branch air duct of the corresponding storage compartment 11, and the internal circulation fan is installed at the top of the inner cavity of the storage compartment 11. The control terminals of the electric air valve and the internal circulation fan are electrically connected to the corresponding distributed field control substation 4. According to the instructions of the central control unit 2, the opening degree of the electric air valve and the operating status of the internal circulation fan can be adjusted to achieve precise adjustment of the ventilation volume and internal circulation control of the corresponding storage compartment 11.

[0047] Human-Machine Interaction Unit 5: Installed on the front outer wall of the cabinet body 1, it includes a high-definition touch screen display, an offline voice interaction module, and emergency physical buttons. The touch screen display is used to display the system operating status, environmental parameters of each storage compartment 11, ventilation control parameter settings, fault warning information, etc. in real time. The offline voice interaction module adopts a local offline voice recognition algorithm, which can realize voice control and status broadcast without network connection. The emergency physical buttons include a system master start / stop button, a fault reset button, and an emergency ventilation button, which are used for system emergency operation and fault reset.

[0048] Smart Home Linkage Unit 6: It has a two-way communication connection with the central control unit 2, is compatible with Matter, Zigbee 3.0 and WiFi 6 wireless communication protocols, and is equipped with a standardized MQTT data interaction interface. It can seamlessly connect and link with devices such as air conditioners, dehumidifiers, fresh air systems, door and window sensors, and human presence sensors in the whole-house smart home system.

[0049] For example, when the door and window sensor detects that the window is open, the central control unit 2 automatically pauses the operation of the main ventilation module to avoid energy waste; when the humidity in the compartment exceeds the standard, it will activate the dehumidifier in the home to quickly reduce the humidity in conjunction with the ventilation system; when the human presence sensor detects that a user is approaching the cabinet, it will automatically wake up the touch display screen to improve the ease of operation.

[0050] Power Management Unit 8 includes a mains power supply module, a 12V / 10Ah backup lithium battery module, a power switching module, and an overcurrent and overvoltage protection module. The input of the mains power supply module is connected to the 220V mains power grid, and the output is 12V DC power to power the system. The backup lithium battery module is connected in parallel with the mains power supply module through the power switching module. The control terminal of the power switching module is electrically connected to the central control unit 2. When the mains power fails, it can automatically switch to the backup lithium battery module for power supply, ensuring that the core environmental monitoring and internal circulation ventilation functions of the system can operate continuously for at least 72 hours, avoiding damage to stored items due to the deterioration of the cabinet environment after a power outage. The overcurrent and overvoltage protection module is connected in series at the output of the power management unit 8, which can realize overcurrent, overvoltage, short circuit, and reverse connection protection to ensure the electrical safety of the system.

[0051] Fault self-diagnosis unit 7: Integrated within the central control unit 2, it includes a parameter acquisition module, a fault judgment module, an early warning output module, and an emergency control module. The parameter acquisition module collects data from all environmental sensing components, operating parameters of all execution units, and link status of all communication nodes in real time via the fieldbus communication module 3. The fault judgment module has a built-in fault judgment model that determines whether the equipment has a fault, the type of fault, and the fault level based on the collected data. The fault levels are divided into Level 1 faults, emergency faults: main ventilation module failure, main control power failure; and Level 2 faults, general faults: single sensor failure, single air valve failure. The early warning output module can push fault warning information to the user's mobile APP through the display screen and voice module of the human-machine interaction unit 5, as well as the smart home linkage unit 6. The emergency control module executes corresponding emergency control strategies for different fault levels to ensure the safety of the storage environment.

[0052] Reference Figure 3 The steps of the fault self-diagnosis unit 7 are as follows:

[0053] S1: Data acquisition, fault self-diagnosis unit 7 starts, and collects the operating data of all nodes of the system in real time through fieldbus communication module 3, including data collected by sensing unit, operating parameters of execution unit, and link status of communication node;

[0054] S2: Fault diagnosis. The collected real-time operating data is compared with the preset normal operating threshold to determine whether there is abnormal data. If there is no abnormal data, the system continues to perform real-time data collection and repeats steps S1-S2. If there is abnormal data, proceed to the next step S3.

[0055] S3: Classify fault levels. Through the built-in fault judgment model, identify the fault type and fault location, and classify the fault level into Level 1 emergency faults and Level 2 general faults.

[0056] S4: Select an emergency control strategy and execute the corresponding emergency control strategy for different fault levels:

[0057] S401: If it is a Level 1 emergency fault, activate the emergency protection mode, turn on the internal circulation fans of all storage compartments 11 to ensure the basic ventilation environment inside the cabinet, and at the same time cut off the power supply of the faulty main circuit to prevent the fault from escalating.

[0058] S402: If it is a level 2 general fault, the faulty node will be blocked to ensure the normal operation of other non-faulty nodes, and maintenance prompt information will be pushed at the same time.

[0059] S5: Warning output. For the identified faults, the corresponding fault warning information is output through the human-machine interaction unit 5 and the smart home linkage unit 6, and the fault data is recorded to the storage module of the central control unit 2 simultaneously.

[0060] S6: Fault reset. The system re-executes the initialization process and restores normal operation.

[0061] The implementation principle of the intelligent ventilation cabinet and its control system in this application embodiment is as follows: When in use, the user can set the corresponding storage item type for each storage compartment 11 through the human-machine interaction unit 5. The system automatically matches the corresponding environmental parameter threshold and ventilation control strategy for each compartment. The distributed field control substation 4 collects the environmental parameters of the corresponding compartment in real time and uploads them to the central control unit 2. The central control unit 2 compares the collected parameters with the set threshold and sends control commands to the corresponding distributed field control substation 4 to adjust the operating status of the compartment ventilation actuator and adjust the operating power of the main ventilation module to achieve closed-loop precise ventilation control.

[0062] When the system detects that the concentration of mold spores in a certain compartment exceeds the standard, it automatically activates the powerful ventilation mode of that compartment and simultaneously activates the temperature and humidity control components to eliminate the risk of mold growth in advance. When the system detects a device malfunction, the fault self-diagnosis unit 7 automatically executes fault warning and emergency control strategies to ensure the safety of the storage environment. At the same time, the system can achieve scene linkage with smart home devices throughout the house through the smart home linkage unit 6 to achieve adaptive adjustment.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A smart ventilated wall cabinet and its control system, comprising a wall cabinet body (1) and a smart ventilation control system integrated into the wall cabinet body (1), wherein the inner cavity of the wall cabinet body (1) is divided into at least two independent storage compartments (11), characterized in that, The intelligent ventilation control system includes a central control unit (2), a fieldbus communication module (3), at least two sets of distributed field control substations (4), a multimodal environment sensing unit (41), a distributed ventilation execution unit (42), a human-machine interaction unit (5), a smart home linkage unit (6), a fault self-diagnosis unit (7), and a power management unit (8). The central control unit (2) is located in the main control compartment of the cabinet body (1), and it serves as the core control hub of the system; Each of the distributed field control substations (4) corresponds to a storage compartment (11), and the distributed field control substations (4) are bidirectionally connected to the central control unit (2) through the fieldbus communication module (3); The multimodal environment sensing unit (41) includes several sets of environment sensing components. Each set of environment sensing components is installed in a storage compartment (11). The signal output terminal of the environment sensing component is electrically connected to the signal input terminal of the corresponding distributed field control substation (4). The distributed ventilation execution unit (42) includes a main ventilation module and several sets of inter-cell ventilation execution mechanisms. The control terminal of the main ventilation module is electrically connected to the central control unit (2). Each set of inter-cell ventilation execution mechanisms corresponds to a storage cell (11). The control terminal of the inter-cell ventilation execution mechanism is electrically connected to the corresponding distributed field control substation (4). The human-computer interaction unit (5) and the smart home linkage unit (6) are both bidirectionally connected to the central control unit (2); The fault self-diagnosis unit (7) is integrated inside the central control unit (2), and the fault self-diagnosis unit (7) is bidirectionally connected to each functional unit of the system through the fieldbus communication module (3); The output terminal of the power management unit (8) is electrically connected to each power-consuming unit of the system.

2. The intelligent ventilation cabinet and its control system according to claim 1, characterized in that: The fieldbus communication module (3) adopts a CAN bus or RS485 industrial-grade fieldbus architecture and is compatible with the TCP / IP Ethernet communication protocol. The number of communication nodes of the fieldbus communication module (3) matches the number of distributed field control substations (4). Each communication node is configured with an independent address code and redundant communication links.

3. The intelligent ventilation cabinet and its control system according to claim 2, characterized in that: The environmental sensing components include a temperature and humidity sensor, a VOC gas sensor, a mold spore sensor, and a PM2.5 particulate matter sensor. The temperature and humidity sensor, VOC gas sensor, mold spore sensor, and PM2.5 particulate matter sensor are all electrically connected to the corresponding distributed field control substation (4) through an analog-to-digital conversion module.

4. The intelligent ventilation cabinet and its control system according to claim 3, characterized in that: The main ventilation module includes a variable frequency ventilation fan and a temperature and humidity control component. The control terminals of the variable frequency ventilation fan and the temperature and humidity control component are both electrically connected to the central control unit (2).

5. The intelligent ventilation cabinet and its control system according to claim 4, characterized in that: The ventilation actuator of the compartment includes an electric air valve and an internal circulation fan. The control terminals of the electric air valve and the internal circulation fan are electrically connected to the corresponding distributed field control substation (4).

6. The intelligent ventilation cabinet and its control system according to claim 5, characterized in that: The human-machine interaction unit (5) includes a touch screen, a voice interaction module, and an emergency physical button. The touch screen is used to display the system operating status and parameter settings. The voice interaction module is used to realize voice control and status broadcast. The emergency physical button is used for system emergency start / stop and fault reset.

7. The intelligent ventilation cabinet and its control system according to claim 6, characterized in that: The smart home linkage unit (6) is compatible with Matter, Zigbee 3.0 and WiFi 6 wireless communication protocols. The smart home linkage unit (6) is equipped with a standardized data interaction interface for linkage control with the terminal devices of the whole-house smart home system.

8. The intelligent ventilation wall cabinet and its control system according to claim 7, characterized in that: The distributed field control substation (4) uses a microcontroller as the control core. Each distributed field control substation (4) is only responsible for the field data acquisition and actuator control of the corresponding storage cell (11). The failure of a single distributed field control substation (4) will not affect the normal operation of other substations.

9. The intelligent ventilation wall cabinet and its control system according to claim 8, characterized in that: The power management unit (8) includes a mains power supply module, a backup lithium battery module, a power switching module, and an overcurrent and overvoltage protection module. The input terminal of the mains power supply module is connected to the mains power grid. The backup lithium battery module is connected in parallel with the mains power supply module through the power switching module. The control terminal of the power switching module is electrically connected to the central control unit (2). The overcurrent and overvoltage protection module is connected in series with the output terminal of the power management unit (8).

10. A smart ventilated wall cabinet and its control system according to claim 9, characterized in that: The fault self-diagnosis unit (7) includes a parameter acquisition module, a fault judgment module, an early warning output module, and an emergency control module. The parameter acquisition module is used to collect the operating data of all nodes of the system in real time. The fault judgment module is used to identify the fault type and fault level. The early warning output module is used to output fault early warning information. The emergency control module is used to execute the emergency control strategy corresponding to the fault level.

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