Intelligent fresh air system

Abstract

The utility model discloses an intelligent fresh air system, which is used for indoor and outdoor air replacement and comprises an air quality detection module, an indoor air quality detection module, an indoor air quality detection module and an indoor air quality detection module, the human body sensing module is arranged indoors and used for collecting indoor personnel information; the fresh air exchange module is arranged between the indoor space and the outdoor space and used for conducting ventilation on the indoor space; the central controller is connected with the air quality detection module, the human body induction module and the fresh air exchange module, and the central controller is used for receiving the air quality parameters and the personnel information, generating a fresh air adjusting instruction according to the air quality parameters and the personnel information and sending the fresh air adjusting instruction to the fresh air exchange module. And then the fresh air adjusting instruction is sent to a fresh air exchange module, so that the fresh air exchange module executes corresponding actions according to the fresh air adjusting instruction. The intelligent degree of indoor ventilation and air exchange can be improved, energy consumption of ventilation and air exchange is reduced, and the ventilation and air exchange effect is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air purification technical field, concretely relates to a kind of intelligent fresh air system. BACKGROUND

[0002] In recent years, with the continuous improvement of people's attention to indoor air quality, the ventilation of room becomes extremely important. Indoor air quality is directly related to people's health and comfort. Polluted indoor air may contain formaldehyde, benzene and particulate matter and other harmful substances, which can cause respiratory diseases, allergies and other health problems. Traditional ventilation methods, such as window ventilation, are greatly limited by outdoor environment. For example, in the case of serious outdoor air pollution, high humidity or extreme weather, opening the window not only may not improve indoor air quality, but also may introduce more pollutants, making the indoor environment uncomfortable. In addition, it is difficult to accurately control the ventilation volume and air quality through this way.

[0003] Some existing fresh air systems can improve indoor air to some extent. However, they have significant defects. First, the degree of intelligence is not high, that is, the current fresh air system usually operates according to the preset fixed mode, which cannot well adapt to the changing indoor environment in real time. Second, the current fresh air system has large energy consumption, which not only increases the use cost, but also does not meet the concept of energy saving and environmental protection. Third, the current fresh air system cannot be adjusted in real time according to the actual personnel activity situation and air quality in the room. For example, when the number of people in the room increases, the demand for fresh air will increase, but the existing system may not be able to perceive this change and adjust the ventilation volume and purification intensity accordingly. Therefore, how to improve the degree of intelligence of fresh air system and enhance the effect of fresh air ventilation is a problem to be solved by those skilled in the art. SUMMARY

[0004] The utility model embodiment provides a kind of intelligent fresh air system, to improve the degree of intelligence of indoor ventilation, reduce the energy consumption of ventilation, enhance the effect of ventilation.

[0005] The utility model embodiment provides a kind of intelligent fresh air system for indoor and outdoor air replacement, the intelligent fresh air system includes:

[0006] Air quality detection module is set in indoor, for collecting the air quality parameter in indoor;

[0007] Human body sensing module is set in indoor, for collecting the personnel information in indoor;

[0008] Fresh air ventilation module is set between indoor and outdoor, for the ventilation of indoor;

[0009] A central controller is connected with the air quality detection module, the human body sensing module and the fresh air ventilation module respectively, and is configured to receive the air quality parameters and the personnel information, generate a fresh air adjustment instruction according to the air quality parameters and the personnel information, and send the fresh air adjustment instruction to the fresh air ventilation module so that the fresh air ventilation module performs corresponding actions according to the fresh air adjustment instruction.

[0010] Further, the fresh air ventilation module is connected with the indoor and outdoor through a first air supply pipeline for discharging indoor air to the outdoor, and is connected with the indoor and outdoor through a second air supply pipeline for introducing outdoor air to the indoor.

[0011] Further, the fresh air ventilation module comprises a fresh air fan, an air filter unit and a heat exchanger, the fresh air fan is arranged at the intersection of the first air supply pipeline and the second air supply pipeline, the air filter unit is arranged on the second air supply pipeline, and the heat exchanger is arranged at the internal air duct intersection of the fresh air fan.

[0012] Further, the air quality detection module comprises a gas detection unit and / or a particulate matter detection unit.

[0013] Further, a plurality of air quality detection modules are arranged at different positions in the indoor.

[0014] Further, the human body sensing module comprises an infrared detection device.

[0015] Further, the human body sensing module comprises a heat source sensing device.

[0016] Further, the air filter unit is provided with multi-level filtration, and the multi-level filtration comprises primary filter screen filtration, secondary electrostatic dust collection filtration and final activated carbon adsorption filtration.

[0017] Further, a differential pressure detection unit is further included, the differential pressure detection unit comprises air pressure detection probes arranged on both sides of the air filter unit respectively, and the differential pressure detection unit is connected with the central controller.

[0018] Further, the central controller is further connected with at least one intelligent terminal in communication, is configured to receive a control instruction of the intelligent terminal, and forwards the control instruction to the fresh air ventilation module.

[0019] This utility model embodiment provides an intelligent fresh air system for indoor-outdoor air exchange. The intelligent fresh air system includes: an air quality detection module, installed indoors, for collecting indoor air quality parameters; a human body sensing module, installed indoors, for collecting indoor occupant information; a fresh air exchange module, installed between the indoor and outdoor areas, for ventilating the indoor area; and a central controller, connected to the air quality detection module, the human body sensing module, and the fresh air exchange module. The central controller receives the air quality parameters and occupant information, generates a fresh air adjustment command based on the air quality parameters and occupant information, and then sends the fresh air adjustment command to the fresh air exchange module, so that the fresh air exchange module performs corresponding actions according to the fresh air adjustment command. The intelligent fresh air system provided in this embodiment of the invention can automatically collect indoor air quality parameters and personnel information through an air quality detection module and a human body sensing module. A central controller then dynamically adjusts the fresh air exchange module based on the collected air quality parameters and personnel information, thereby achieving intelligent control of indoor ventilation. Adjusting the fresh air exchange module according to air quality parameters and personnel information ensures that the module operates at a reasonable level for extended periods, achieving precise control of the module's operation based on actual needs. This reduces energy consumption during ventilation. Furthermore, this embodiment of the invention can control fresh air exchange based on changes in indoor air quality and the number of people, thus enhancing ventilation and providing users with a more comfortable, healthy, and energy-efficient indoor environment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A system architecture diagram of an intelligent fresh air system provided for an embodiment of this utility model;

[0022] Figure 2 A flowchart illustrating an intelligent fresh air system provided for an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of a sub-process of an intelligent fresh air system provided for an embodiment of the present utility model.

[0024] Markings in the image:

[0025] 1, air quality detection module; 2, human body induction module; 3, fresh air ventilation module; 4, central controller; 5, first air supply pipeline; 6, second air supply pipeline. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0027] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0028] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0029] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0030] Please see Figure 1 The intelligent fresh air system provided by the embodiments of the present application is used for indoor and outdoor air replacement, and comprises:

[0031] The air quality detection module 1 is arranged indoors and is used for collecting air quality parameters indoors;

[0032] The human body induction module 2 is arranged indoors and is used for collecting personnel information indoors;

[0033] The fresh air ventilation module 3 is arranged between indoors and outdoors and is used for ventilating and air exchanging indoors;

[0034] The central controller 4 is connected with the air quality detection module 1, the human body sensing module 2 and the fresh air ventilation module 3 respectively, and is used for receiving the air quality parameters and the personnel information, generating a fresh air regulation instruction according to the air quality parameters and the personnel information, and then sending the fresh air regulation instruction to the fresh air ventilation module 3 so that the fresh air ventilation module 3 performs corresponding actions according to the fresh air regulation instruction.

[0035] In the embodiment, the intelligent fresh air system mainly comprises the air quality detection module 1, the human body sensing module 2, the fresh air ventilation module 3 and the central controller 4. The air quality detection module 1 is arranged in a room and is responsible for collecting indoor air quality parameters; the human body sensing module 2 is also arranged in the room and is used for collecting indoor personnel information; the fresh air ventilation module 3 is installed between the room and the outside and is responsible for indoor ventilation; and the central controller 4 is connected with the above three modules, receives the air quality parameters and the personnel information, generates a fresh air regulation instruction, and sends the instruction to the fresh air ventilation module 3 to make it perform corresponding actions.

[0036] The intelligent fresh air system provided in the embodiment can realize automatic collection of indoor air quality parameters and personnel information through the air quality detection module 1 and the human body sensing module 2, so that the central controller 4 dynamically adjusts the fresh air ventilation module 3 according to the collected air quality parameters and personnel information, thereby realizing intelligent control of indoor ventilation, ensuring that the fresh air ventilation module 3 is in a reasonable operation stage for a long time, achieving the effect of accurately regulating the fresh air ventilation module 3 according to actual needs, reducing the energy consumption of the fresh air ventilation module 3 in the ventilation process, and enhancing the ventilation effect to provide a more comfortable, healthy and energy-saving indoor environment for users.

[0037] In an embodiment, the fresh air ventilation module 3 is connected with the room and the outside through a first air supply pipeline 5 for discharging indoor air to the outside; and the fresh air ventilation module 3 is also connected with the room and the outside through a second air supply pipeline 6 for introducing outdoor air into the room.

[0038] The first air supply pipeline 5 and the second air supply pipeline 6 work together to realize efficient exchange of indoor and outdoor air and ensure smooth air circulation. The central controller 4 intelligently adjusts the air supply according to real-time data, ensures the freshness of indoor air, avoids energy waste, and further improves the overall operation efficiency of the system.

[0039] In practical application scenarios, the first air supply pipeline 5 and the second air supply pipeline 6 are reasonably arranged in the ceiling, wall or floor of the room, connecting the fresh air execution module and various spaces in the room, to ensure that fresh air can be evenly distributed to every corner of the room, while effectively exhausting indoor dirty air. Through this layout design, not only the uniformity of air circulation is improved, but also the indoor air flow path is optimized, reducing air dead angles, so that every area can enjoy fresh air, further improving the comfort and health of the living environment. Preferably, the first air supply pipeline 5 and the second air supply pipeline 6 are configured with intelligent sensors to monitor the wind speed and pressure in the pipeline in real time, ensuring stable operation of the air supply pipeline. Correspondingly, the central controller 4 can dynamically adjust the air supply strategy according to the data transmitted by the intelligent sensors to avoid problems such as poor ventilation caused by pipeline blockage or unstable wind speed, thereby further ensuring the stability and reliability of indoor air quality. Through this intelligent control mechanism, the intelligent fresh air system can not only accurately adjust the fresh air volume according to real-time needs, but also effectively reduce operating noise, improving user experience.

[0040] In an embodiment, the fresh air ventilation module 3 includes a fresh air fan, an air filter unit and a heat exchanger, the fresh air fan is arranged at the intersection of the first air supply pipeline 5 and the second air supply pipeline 6, the air filter unit is arranged on the second air supply pipeline 6, and the heat exchanger is arranged at the internal air duct intersection of the fresh air fan.

[0041] In this embodiment, the fresh air ventilation module 3 is composed of a fresh air fan, an air filter, a heat exchanger, etc. Among them, the fresh air fan is responsible for introducing outdoor fresh air and exhausting indoor dirty air, the air filter can filter out dust, pollen, bacteria and other impurities in the air, and the heat exchanger can exchange heat when introducing outdoor fresh air and exhausting indoor dirty air, reducing energy loss. The fresh air execution module adjusts the air volume, air speed and air treatment mode, etc. according to the instructions of the central controller 4.

[0042] In practical application scenarios, the fresh air fan can adopt a high-efficiency energy-saving variable frequency motor, which can intelligently adjust the speed according to actual needs, thereby maximizing energy saving while ensuring ventilation effect. The heat exchanger can use high-efficiency heat exchange technology to fully recover energy when indoor and outdoor air is exchanged, reduce energy loss, and improve the energy efficiency ratio of the system.

[0043] In an embodiment, the air quality detection module 1 includes a gas detection unit and / or a particulate matter detection unit.

[0044] Further, the air quality detection module 1 is provided with a plurality of air quality detection modules 1 distributed at different positions in the room.

[0045] In this embodiment, the air quality detection module 1 mainly covers a gas detection unit and / or a particulate matter detection unit. Through the gas detection unit and the particulate matter detection unit, the comprehensive monitoring of indoor air quality can be ensured. Specifically, the gas detection unit can use advanced sensing technology to detect various harmful gases that may exist in indoor air. For example, formaldehyde, a volatile organic compound widely present in decoration materials and extremely harmful to human health, the gas detection unit can use an electrochemical sensor to generate an electrical signal through the chemical reaction between formaldehyde and the electrode, and accurately determine the concentration of formaldehyde according to the strength of the electrical signal. For benzene, toluene and other toxic benzene series, the gas detection unit can use a photoionization sensor to ionize these gas molecules with specific wavelength ultraviolet light, and then measure the ionization current to determine the gas content. In addition, for carbon dioxide, which reflects the freshness of indoor air, a non-dispersive infrared sensor can be used to detect the concentration based on the absorption characteristics of carbon dioxide to specific wavelength infrared light. The particulate matter detection unit focuses on capturing solid or liquid small particles suspended in the air. It uses the principle of laser scattering. When laser irradiates the particulate matter in the air, scattering occurs. The particulate matter detection unit detects the intensity and angle of the scattered light and uses complex algorithms to calculate the concentration and particle size distribution of the particulate matter. PM2.5 (particulate matter with a particle size less than or equal to 2.5 microns) and PM10 (particulate matter with a particle size less than or equal to 10 microns) can be accurately detected.

[0046] To ensure that the indoor air quality is monitored without dead angles and in all directions, multiple air quality detection modules 1 are provided in the intelligent fresh air system. These air quality detection modules 1 are distributed at different positions in the room. For example, in the living room, the air quality detection modules 1 can be installed near the sofa area, near the TV background wall, and around the ventilation opening. The position near the sofa area can accurately detect the air quality in the area where people frequently move; the position near the TV background wall can monitor whether the operation of electrical appliances affects the air quality; and the position around the ventilation opening can help understand the quality of the mixed air after the fresh air is introduced into the room. For example, in the bedroom, the air quality detection modules 1 can be respectively arranged at the bedside, near the wardrobe, and below the window. The position at the bedside can directly reflect the air quality of the sleeping area, providing data to ensure a healthy sleep environment; the position near the wardrobe can detect whether the clothes storage environment is contaminated due to the release of formaldehyde and the like; and the position below the window can monitor the change in air quality after outdoor air enters the room. Through the cooperative work of multiple air quality detection modules 1 at different positions in the room, the intelligent fresh air system of the present embodiment can real-time and comprehensively grasp the air quality status of every corner of the room. Once an air quality anomaly occurs in a certain area, the system can quickly locate the problem and provide accurate data support for subsequent air purification and ventilation strategy adjustment, thereby ensuring that every space in the room has fresh and healthy air environment.

[0047] In an embodiment, the human sensing module comprises an infrared detection device. The infrared detection device can be specifically an infrared sensor or other intelligent camera and the like, which can accurately identify the number and activity state of indoor personnel and transmit these data to the central controller 4 in real time, so that the system adjusts the fresh air ventilation strategy according to the personnel dynamics, further improving the comfort and energy saving effect of the indoor environment.

[0048] For example, when collecting personnel information by an infrared sensor, the resistance change data generated by the human body cutting off or blocking infrared rays and the related data of the specific infrared rays of about 10 um emitted by the human body are collected, and then whether there is personnel entering the sensing area is judged according to the resistance change or the presence or absence, strength and the like of the specific infrared rays, so as to determine the number and activity state of personnel. Preferably, a plurality of infrared opposite-acting sensors can be arranged, so that the entering and exiting directions of personnel can be judged according to the sequence of sensing by the front and rear sensors, making the collected information more accurate. For example, when collecting personnel information by an intelligent camera, a 3D binocular passenger flow counter can be directly used to collect 3D image data containing the length, width and height information of personnel, or video image data of personnel, and then the collected images are preprocessed such as noise reduction and grayscale. Then a target detection algorithm such as YOLO, SSD, etc. is used to identify the personnel target in the image. And a tracking algorithm such as Kalman filter, Hungarian algorithm, etc. is used to track the personnel, and the number and activity state are counted according to the situation of personnel entering and leaving the statistical area.

[0049] In another embodiment, the human sensing module comprises a heat source sensing device. The heat source sensing device accurately judges the position and activity state of personnel by detecting the heat change emitted by the human body, and the data is transmitted to the central controller 4 in real time to optimize the operation strategy of the fresh air system, ensure that the indoor environment is always in the best state, and realize the perfect combination of efficient energy saving and comfortable experience. The heat source sensing device uses high-sensitivity sensors to capture weak heat changes, combined with intelligent algorithms to accurately analyze personnel distribution and activity intensity, dynamically adjust fresh air output, and ensure balanced air quality in each area to improve overall living experience.

[0050] It can be understood that the human body will continuously radiate infrared rays, and the radiation intensity is related to the body temperature. The heat source sensing device is usually based on elements such as thermocouples and pyroelectric infrared sensors, which can sense changes in infrared energy. When personnel are active within its sensing range, the infrared rays radiated by the human body are received by the device, causing physical changes inside the element, such as thermocouples generating thermoelectric electromotive force, and pyroelectric sensors generating electrical signal output due to charge changes, which serves as the basis for detecting the presence of personnel.

[0051] In actual application scenarios, the heat source sensing area can be divided into multiple small areas, and each area corresponds to one or a group of heat source sensing elements. When multiple areas simultaneously detect heat source signals, the number of people can be roughly estimated by analyzing the signal strength and distribution of each area. For example, in a large conference room, multiple heat source sensing devices are evenly distributed. If three independent areas simultaneously detect obvious heat source signals and the signal strength is within the human body radiation range, it can be preliminarily judged that there are three people. Generally, the total heat signal strength received by the heat source sensing device is proportional to the number of people, so by establishing an empirical model, the detected signal strength is compared with the signal strength under the known number of people. For example, in an office, after preliminary testing, when there are 5 people, the total heat signal strength received by the device is X. If the subsequent detected signal strength is close to 2X, after excluding other heat source interference, it can be inferred that the number of people is about 10. Thus, the number of people in the room can be obtained.

[0052] In an embodiment, the air filtering unit is provided with multi-level filtering, including primary filter screen filtering, secondary electrostatic dust collection filtering, and final activated carbon adsorption filtering.

[0053] In this embodiment, the air filtering unit adopts a multi-level filtering mechanism to efficiently remove small particulate matter, harmful gases, and odors in the air, further improving indoor air quality and ensuring the health and comfort of the living environment. Specifically, the primary filter screen serves as the first line of defense, and its mesh structure can effectively intercept larger particles in the air, such as dust, hair, pollen, and other pollutants. These larger particulate matter will be blocked by the filter screen and retained on the surface when passing through the primary filter screen, thereby preventing them from entering the subsequent filtering process and reducing the burden on the subsequent finer filtering. The secondary electrostatic dust collection filtering utilizes the principle of electrostatic adsorption. When air passes through, the small particulate matter it carries, such as PM2.5, is captured by the electrostatic dust collection device. The strong adsorption force of static electricity can capture fine particles that are difficult to intercept by the primary filter screen, greatly improving the removal efficiency of small pollutants in the air. The final activated carbon adsorption filtering provides the last line of protection for air purification. Activated carbon has a rich microporous structure and a large specific surface area, which enables it to have strong adsorption capacity for harmful gases in the air, such as formaldehyde, benzene, TVOC, and other volatile organic compounds. When the air that has passed through the first two levels of filtering flows through the activated carbon layer, harmful gas molecules are adsorbed by the micropores of the activated carbon, thereby achieving deep purification of the air. Through the synergistic operation of the primary filter screen filtering, secondary electrostatic dust collection filtering, and final activated carbon adsorption filtering, the fresh air system can comprehensively and multi-levelly purify the air introduced into the room, ensuring the delivery of fresh and clean air to users, significantly improving indoor air quality, and further enhancing the ventilation effect.

[0054] In addition, the intelligent fresh air system further comprises a differential pressure detection unit, which comprises air pressure detection probes located on both sides of the air filtering unit respectively, and is connected with the central controller 4.

[0055] The differential pressure detection unit monitors the air pressure difference on both sides of the air filtering unit in real time and transmits data to the central controller 4, so as to timely determine the blockage condition of the air filtering unit and automatically remind the user to clean or replace when the blockage condition reaches a preset warning threshold, thereby ensuring the continuous and efficient operation of the overall system. The central controller 4 can also intelligently adjust the rotation speed of the fresh air fan according to the differential pressure data, so as to optimize air circulation, prolong the service life of the filter screen, and improve the overall efficiency of the system.

[0056] In some preferred embodiments, the intelligent fresh air system further has an intelligent self-cleaning function. For example, when the dust accumulated in the air filtering unit reaches a certain degree, the central controller 4 automatically triggers a cleaning program to remove dust on the filter screen through reverse blowing or the like, thereby maintaining the cleanliness and ventilation efficiency of the filter screen. This function not only prolongs the service life of the air filtering unit, but also reduces the frequency and cost of manual maintenance.

[0057] In some optional embodiments, the intelligent fresh air system can further comprise an intelligent humidity adjustment module, which can automatically adjust the indoor humidity to a comfortable range for human body according to the indoor humidity information. The intelligent humidity adjustment module is connected with the central controller 4 to receive data from the humidity sensor, and then sends instructions to the central controller 4 to adjust the indoor humidity, for example, through a humidifier or dehumidifier to achieve precise control of humidity. This design enables the intelligent fresh air system not only to effectively manage indoor air quality, but also to provide a more comfortable living environment, especially in dry or humid seasons, which can significantly improve the user's living experience.

[0058] In an embodiment, the central controller 4 is further in communication connection with at least one intelligent terminal for receiving control instructions of the intelligent terminal and forwarding the control instructions to the fresh air ventilation module 3.

[0059] In this embodiment, by connecting the central controller 4 with the intelligent terminal, the user can control the fresh air ventilation module 3 through the intelligent terminal only, thereby further improving the intelligence of the fresh air system.

[0060] In practical application scenarios, the central controller 4 can be implemented by Bluetooth, Wi-Fi or other wireless communication technologies when establishing a communication connection with the intelligent terminal, ensuring stable data transmission. Users can install a specially adapted application program (APP) on their smartphones, tablets and other intelligent terminals. This allows users to control the system using the APP, for example, on the operation interface of the APP, various control options such as ventilation mode selection, wind speed adjustment, and air exchange time setting are clearly presented. When the user inputs control instructions on the intelligent terminal according to their own needs, the instructions are quickly transmitted to the central controller 4 through the wireless communication network. The central controller 4 receives the instructions and immediately analyzes and processes them, then accurately forwards the corresponding control instructions to the fresh air ventilation module 3. The fresh air ventilation module 3 adjusts its working state flexibly according to the received instructions, such as changing the ventilation rate or switching to different ventilation modes, to meet the user's diverse indoor ventilation needs and create a more convenient and personalized indoor air environment for the user.

[0061] In addition, the application program on the intelligent terminal can also provide real-time state monitoring of the intelligent fresh air system. Users can view real-time indoor air quality data collected by the air quality detection module 1, such as PM2.5 concentration and carbon dioxide concentration, as well as personnel activity detected by the human sensing module 2, through the APP. These data and information will be displayed in the form of intuitive charts or numerical values on the APP interface, allowing users to keep track of the dynamic changes in the indoor environment at any time.

[0062] Furthermore, the application program also has historical data recording and analysis functions. It can automatically record and save the change trend of indoor air quality and the operation record of the fresh air system over a period of time. Users can analyze the change pattern of indoor air quality by viewing historical data, thereby adjusting the operation strategy of the fresh air system more scientifically. For example, in seasons or periods of poor air quality, users can set more frequent fresh air ventilation modes in advance to ensure the freshness and health of indoor air.

[0063] In addition, the application program on the intelligent terminal also supports remote control functions. No matter where the user is, as long as the intelligent terminal can access the Internet, the user can remotely control the intelligent fresh air system through the APP. This function is particularly useful when the user is away from home or traveling, as they can turn on or off the fresh air system in advance through the APP to ensure stable and comfortable air quality at home.

[0064] In general, by connecting the central controller 4 with the intelligent terminal, the intelligent fresh air system not only realizes intelligent control, but also provides real-time state monitoring, historical data recording and analysis, and remote control and other diversified functions. These functions together constitute the complete intelligent system of the intelligent fresh air system, providing users with a more convenient, personalized and efficient indoor air environment management solution.

[0065] Further, in order to improve the intelligent level of the system and the user interaction experience, the intelligent fresh air system also integrates the intelligent voice assistant function. Users can control the system through voice instructions, such as querying indoor air quality, adjusting fresh air volume, turning on and off the system, etc., without manual operation, which is more convenient. The intelligent voice assistant understands user instructions through the built-in voice recognition engine and converts them into corresponding control signals, which are sent to the central controller 4 for execution, realizing natural and efficient human-computer interaction.

[0066] Figure 2 The flowchart of the control method of the intelligent fresh air system provided in the embodiment of the utility model, the control method specifically comprises: steps S101-S103.

[0067] Step S101, using the air quality detection module 1 to collect the indoor air quality parameters;

[0068] Step S102, using the human body sensing module 2 to collect the indoor personnel information;

[0069] Step S103, generating a fresh air regulation instruction according to the air quality parameters and personnel information, and then sending the fresh air regulation instruction to the fresh air ventilation module 3, so that the fresh air ventilation module 3 executes corresponding actions according to the fresh air regulation instruction.

[0070] In this embodiment, first, the air quality detection module 1 and the human body sensing module 2 are used to collect the indoor air quality parameters and personnel information respectively, then the corresponding fresh air regulation instructions are generated according to the collected air quality parameters and personnel information, for example, the fresh air ventilation frequency, temperature regulation and other instructions are generated according to the air quality parameters and personnel information, to ensure that the indoor environment is always in the best state, and then the generated fresh air regulation instructions are sent to the fresh air ventilation module 3, so that it automatically adjusts the ventilation frequency and temperature according to the instructions, realizes precise control, and guarantees the indoor air quality and comfort.

[0071] The embodiment can realize automatic collection of indoor air quality parameters and personnel information through the air quality detection module 1 and the human body sensing module 2, so that the central controller 4 dynamically adjusts the fresh air ventilation module 3 according to the collected air quality parameters and personnel information, thereby realizing intelligent control of indoor ventilation and air exchange, and adjusting the fresh air ventilation module 3 according to the air quality parameters and personnel information can also ensure that the fresh air ventilation module 3 is in a reasonable operation stage for a long time, so as to achieve the effect of accurately regulating the fresh air ventilation module 3 according to actual needs, thereby reducing the energy consumption of the fresh air ventilation module 3 in the ventilation and air exchange process. At the same time, the embodiment of the utility model can control the fresh air ventilation according to the change of indoor air quality and the change of the number of personnel, so as to enhance the effect of ventilation and air exchange, and provide more comfortable, healthy and energy-saving indoor environment for users.

[0072] In actual application scenarios, the execution subject of the control method can be the central controller 4 of the intelligent fresh air system, of course, it can also be an independent control unit, such as a server or a service terminal, etc.

[0073] Further, in the operation process of the fresh air system, data collection is continuously performed through the air quality detection module 1 and the human body sensing module 2, and the collected data is analyzed to accurately regulate the fresh air ventilation process. For example, when the air quality reaches the preset standard and is stable for a period of time, the fresh air amount can be appropriately reduced or the fresh air ventilation action of the fresh air ventilation module 3 can be suspended to save energy, while the monitoring is continued to adjust the ventilation state at any time according to the indoor situation. By continuously executing the above steps, the indoor environment is monitored and adjusted in real time to ensure that the user is always in the optimal air quality and comfort.

[0074] In specific embodiments, as shown in Figure 3 The step S103 includes steps S201-S203.

[0075] Step S201, determining whether a preset fresh air ventilation threshold is reached according to the air quality parameters and personnel information;

[0076] Step S202, if it is determined that the preset fresh air ventilation threshold is not reached, the air quality parameters and personnel information are continuously collected, and it is continuously determined whether the preset fresh air ventilation threshold is reached;

[0077] Step S203, if it is determined that the preset fresh air ventilation threshold is reached, a fresh air adjustment instruction is generated.

[0078] In this embodiment, when generating the fresh air adjustment instruction according to the air quality parameter and the personnel information, it is specifically judged whether the air quality parameter and the personnel information reach a preset fresh air ventilation threshold. If the threshold is reached, the fresh air system is immediately started for ventilation. If not, it continues to be monitored until the condition is met. Here, the fresh air ventilation threshold can include multiple thresholds. For example, the personnel information specifically includes the number of personnel and the activity state of personnel. When the number of personnel exceeds a preset personnel number threshold, or the activity state reaches a preset activity intensity threshold, a fresh air adjustment instruction to increase the fresh air ventilation frequency can be generated. When the number of personnel decreases or the activity intensity decreases, the fresh air ventilation frequency is correspondingly reduced. When it is determined that there is no one in the room, a command to stop fresh air ventilation can be generated to further save energy. For another example, the air quality parameter includes PM2.5 concentration, formaldehyde content, etc. When these parameters exceed the safety standard, a fresh air adjustment instruction to start fresh air ventilation is generated to enable the fresh air ventilation module 3 to start fresh air ventilation operation to ensure that the indoor air quality meets the standard. Through such intelligent control, not only the living comfort is improved, but also the energy is efficiently utilized.

[0079] In some optional embodiments, the fresh air ventilation control can also be combined with the indoor temperature and humidity. Specifically, when the indoor temperature and humidity exceed the human comfort range, the fresh air ventilation module 3 can also be triggered for corresponding adjustment. For example, in the summer with high humidity, the outdoor dry air can be introduced through the fresh air ventilation module 3, while the indoor humid air is discharged, effectively reducing the indoor humidity and providing a more dry and comfortable living environment. In the cold winter, the outdoor air introduced through the intelligent control of the fresh air ventilation module 3 can be preheated to avoid the discomfort caused by direct blowing of cold air, while the indoor temperature is kept relatively stable. Such intelligent fresh air ventilation control combined with temperature and humidity further improves the practicality and user experience of the system, so that users can enjoy the best indoor environment in different seasons and different weather conditions.

[0080] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the system disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0081] It is further noted that the terminology "first", "second" and the like used in the specification are merely used for differentiating one entity or action from another, and do not necessarily imply any actual physical or logical relationship or order between such entities or actions. Moreover, the use of the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus that comprises a list of elements is not required to comprise only those elements but can include other elements not expressly listed or inherent to such process, method, article or apparatus. An element preceded by "comprises a..." does not, without further restriction, preclude the existence of additional elements of the same nature as those recited.

Claims

1. An intelligent fresh air system for indoor-outdoor air replacement, characterized in that, The intelligent fresh air system comprises: An air quality detection module arranged in the indoor space for collecting air quality parameters in the indoor space; A human body sensing module arranged in the indoor space for collecting personnel information in the indoor space; A fresh air ventilation module arranged between the indoor space and the outdoor space for ventilating the indoor space; the fresh air ventilation module is connected to the indoor space and the outdoor space through a first air supply pipeline for discharging indoor air to the outdoor space; the fresh air ventilation module is also connected to the indoor space and the outdoor space through a second air supply pipeline for introducing outdoor air to the indoor space; the fresh air ventilation module comprises a fresh air fan, an air filter unit and a heat exchanger; the fresh air fan is arranged at the intersection of the first air supply pipeline and the second air supply pipeline; the air filter unit is arranged on the second air supply pipeline; and the heat exchanger is arranged at the intersection of the internal air duct of the fresh air fan; A central controller connected to the air quality detection module, the human body sensing module and the fresh air ventilation module; the central controller is configured to receive the air quality parameters and the personnel information, generate fresh air regulation instructions based on the air quality parameters and the personnel information, and send the fresh air regulation instructions to the fresh air ventilation module so that the fresh air ventilation module performs corresponding actions according to the fresh air regulation instructions.

2. The intelligent fresh air system of claim 1, wherein, The air quality detection module comprises a gas detection unit and / or a particulate matter detection unit.

3. The intelligent fresh air system of claim 1, wherein, A plurality of air quality detection modules are arranged at different positions in the indoor space.

4. The intelligent fresh air system of claim 1, wherein, The human body sensing module comprises an infrared detection device.

5. The intelligent fresh air system of claim 1, wherein, The human body sensing module comprises a heat source sensing device. 6.The intelligent fresh air system according to claim 1, characterized in that, The air filter unit comprises a multi-level filter, which comprises a primary filter screen, a secondary electrostatic dust collection filter and a final activated carbon adsorption filter.

7. The intelligent fresh air system of claim 1, wherein, A differential pressure detection unit is further provided; the differential pressure detection unit comprises air pressure detection probes arranged on both sides of the air filter unit; and the differential pressure detection unit is connected to the central controller. 8.The intelligent fresh air system according to claim 1, characterized in that, The central controller is further connected to at least one intelligent terminal for receiving control instructions from the intelligent terminal and forwarding the control instructions to the fresh air ventilation module.

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