Intelligent electric fan with air quality monitoring

Abstract

The application relates to the technical field of intelligent fans, in particular to an intelligent electric fan with air quality monitoring. The application is provided with a mobile blowing device, a detection device and a central control processor. The central control processor determines the human body contour distribution state based on the human body contour in the panoramic image of the factory collected by the image acquisition unit. When the human body contour distribution state is the gathering distribution state, the mobile fan unit is controlled to move to the gathering area. The air quality parameters in the gathering area are used to adjust the air supply power of each mobile fan unit. When the human body contour distribution state is the scattering distribution state, the mobile fan unit is controlled to move to each scattering area. The motion amount of the human body contour is determined based on the connecting line graph of the corresponding joints of the human body contour in the scattering area, and the air supply power of the mobile fan unit in the scattering area is adjusted correspondingly. The working efficiency and effect of the fan are improved on the basis of saving energy, so that the air quality of the factory is improved, and the comfort of workers is improved.

Description

Technical Field

[0001] This invention relates to the field of smart fans, and more particularly to a smart electric fan with air quality monitoring. Background Technology

[0002] Air quality affects people's health, but people cannot always know the concentration of carbon dioxide in the indoor air they are in. Therefore, appliances with air quality monitoring functions have emerged and play an important role in people's lives.

[0003] Chinese Patent Publication No. CN104728131A discloses the following: This invention belongs to the field of electronic product technology, specifically providing an electric fan with oxygen concentration and air quality monitoring functions, including a control panel (1) and an internal power circuit. The control panel (1) is equipped with a PM2.5 detector (2), an oxygen concentration detector (5), and an alert device (4). The control panel (1) also contains a control module (3). The PM2.5 detector (2) and the oxygen concentration detector (5) are respectively connected to the internal power circuit and the control module (3), and the alert device (4) is connected to the control module (3). This invention solves the problem that people cannot know the air quality of their indoor environment at any time by adding a PM2.5 and oxygen concentration monitoring and alarm system to a traditional electric fan. Through this monitoring and alarm system, people can take timely measures to improve indoor air quality and promote their health.

[0004] However, the following problems still exist in the existing technology:

[0005] In existing technologies, different fan distribution methods are not considered for varying worker densities in the factory work environment. Furthermore, the airflow of the fans is not adjusted according to the air quality and worker workload within the factory area to improve fan efficiency and effectiveness while conserving energy, thereby improving the factory's air quality. Summary of the Invention

[0006] To address the above problems, this invention provides a smart electric fan with air quality monitoring, comprising:

[0007] A mobile air blowing device, comprising several mobile fan units mounted on a moving track on the top of the factory building, for blowing air into different areas of the factory building;

[0008] The detection device includes an air quality acquisition unit installed on the mobile fan unit for collecting air quality parameters and an image acquisition unit installed on the top of the factory building for collecting panoramic images of the factory building.

[0009] The central control processor, connected to the mobile blower and the detection device, includes an image analysis unit and a control unit connected to each other.

[0010] The image analysis unit is used to acquire the panoramic image of the factory building acquired by the image acquisition unit, and to determine the distribution state of the human body contours based on the human body contours in the panoramic image of the factory building. The distribution state of the human body contours includes a clustered distribution state and a dispersed distribution state.

[0011] The control unit is used to determine the clustered distribution state of the human body contour as determined by the image analysis unit, identify the clustered area, control each mobile fan unit to move to the clustered area, and adjust the air supply power of each mobile fan unit based on the air quality parameters in the clustered area.

[0012] In addition, the system is used to determine the dispersed region when the image analysis unit determines that the human body contour distribution is in a dispersed distribution state, control each of the mobile fan units to move to the corresponding dispersed region, and acquire the region image of the dispersed region. Based on the line diagram of the human body contour corresponding to the joint point in the region image, the system determines the amount of motion within a predetermined period, and adjusts the air supply power of the mobile fan unit in the dispersed region based on the amount of motion.

[0013] Furthermore, the image analysis unit calculates the average distance Δde between each human figure contour in the panoramic image of the factory and the remaining human figure contours according to formula (1).

[0014]

[0015] In formula (1), △d i The distance between the i-th human silhouette and the remaining human silhouettes in the panoramic image of the factory is represented by m, where m represents the number of human silhouettes in the panoramic image of the factory.

[0016] Furthermore, the image analysis unit determines the distribution state of the human body contours based on the human body contours in the panoramic image of the factory building, wherein,

[0017] The image analysis unit compares the average distance between each human figure outline in the panoramic image of the factory and the remaining human figure outlines with a preset outline distance comparison threshold.

[0018] If the comparison result satisfies the first distance condition, the image analysis unit determines that the human body contour distribution state is a clustered distribution state;

[0019] If the comparison result satisfies the second distance condition, the image analysis unit determines that the human body contour distribution state is a dispersed distribution state;

[0020] Wherein, the first distance condition is that the average distance between each human body contour in the panoramic image of the factory and the remaining human body contours is less than the contour distance comparison threshold, and the second distance condition is that the average distance between each human body contour in the panoramic image of the factory and the remaining human body contours is greater than or equal to the contour distance comparison threshold.

[0021] Furthermore, the control unit determines the clustering area, wherein the control unit establishes a first rectangular coordinate system with the center of the panoramic image of the factory as the origin, and determines the coordinates corresponding to the center points of each human body contour, determines the maximum horizontal coordinate, minimum horizontal coordinate, maximum vertical coordinate, and minimum vertical coordinate, constructs a rectangular area with the distance between the lines connecting the maximum horizontal coordinate and the minimum horizontal coordinate as the width, and with the distance between the lines connecting the maximum vertical coordinate and the minimum vertical coordinate as the length, and determines the rectangular area as the clustering area.

[0022] Furthermore, the control unit determines the dispersed region when the image analysis unit determines that the human body contour distribution is in a dispersed distribution state, wherein,

[0023] The control unit constructs several circular regions with the center of each human figure's outline in the panoramic image of the factory as the origin and a preset length threshold as the radius, and defines the circular regions as dispersed regions.

[0024] Furthermore, the control unit controls each of the mobile fan units to move to its corresponding dispersed area, wherein,

[0025] The control unit controls the mobile fan units to move to the dispersed areas one by one, so that only a single mobile fan unit exists in each dispersed area.

[0026] Furthermore, the control unit adjusts the airflow power of each mobile fan unit based on the air quality parameters within the aggregation area, wherein,

[0027] The air quality parameters include carbon dioxide concentration. The control unit determines the carbon dioxide concentration in the aggregation area and controls the air supply power of each mobile fan unit to be proportional to the carbon dioxide concentration.

[0028] Furthermore, the control unit determines a line graph of the joints connecting the human body contour in each of the said regional images, wherein,

[0029] The joints in the joint connection diagram include the head position joint, the first hand position joint, the second hand position joint, the first foot position joint, and the second foot position joint.

[0030] Furthermore, the control unit determines the motion amount based on the line drawing of the human body contour corresponding to the joint points in the region image, wherein the control unit calculates the motion amount according to formula (2).

[0031]

[0032] In formula (2), Li represents the displacement of the i-th joint within a predetermined period, where i is an integer greater than 0.

[0033] Furthermore, the control unit adjusts the air delivery power of the mobile fan unit within the dispersed area based on the action amount, wherein,

[0034] The control unit controls the air delivery power of the mobile fan unit to be directly proportional to the amount of motion.

[0035] Compared with existing technologies, this invention improves the efficiency and effectiveness of fans by setting up a mobile fan unit, a detection device, and a central control processor. The central control processor determines the distribution state of human body contours based on the panoramic images of the factory captured by the image acquisition unit. When the human body contours are clustered, the mobile fan unit is controlled to move to the clustered area, and the air supply power of each mobile fan unit is adjusted based on the air quality parameters in the clustered area. When the human body contours are dispersed, the mobile fan unit is controlled to move to each dispersed area, and the motion of the human body contours is determined based on the connection diagram of the joint points of the human body contours in the dispersed areas, and the air supply power of the mobile fan units in the dispersed areas is adjusted accordingly. This improves the working efficiency and effectiveness of fans while saving energy, thereby improving the air quality of the factory and enhancing worker comfort.

[0036] In particular, in this invention, the image analysis unit acquires the panoramic image of the factory building acquired by the image acquisition unit, and determines the distribution state of the human body contours based on the average distance between each human body contour in the panoramic image and the remaining human body contours. In practice, the smaller the average distance between each human body contour and the remaining human body contours, the denser the distribution of workers in the factory building. Therefore, the average distance between each human body contour and the remaining human body contours can reliably represent the distribution of workers in the factory building, i.e., the distribution state of the human body contours. This facilitates the subsequent control of the distribution position of each mobile fan unit for different human body contour distribution states, ensuring the working efficiency and effect of the mobile fan units. It improves the working efficiency and effect of the fans while saving energy, thereby improving the air quality of the factory and increasing the comfort of the workers.

[0037] In particular, in this invention, the control unit determines the placement of each mobile fan unit based on the human body contour distribution determined by the image analysis unit. In actual situations, when the workers in the factory are densely distributed, the mobile fan unit is moved to the densely distributed area to blow air. When the workers in the factory are sparsely distributed, the mobile fan unit is moved to each dispersed area to deliver air to the workers in each dispersed area. This improves the blowing effect of the mobile fan unit, increases the working efficiency and effect of the fan while saving energy, thereby improving the air quality in the factory and improving the comfort of the workers.

[0038] In particular, in this invention, when the image analysis unit determines that the human body contour distribution is in a clustered distribution state, the control unit adjusts the air delivery power of each mobile fan unit based on the air quality parameters within the clustered area. In actual situations, in a densely distributed clustered distribution state of workers in a factory, the concentration of carbon dioxide in the air increases due to the large number of people gathered, affecting breathing comfort. Moreover, the higher the concentration of carbon dioxide in the air, the higher the air delivery power of the mobile fan unit should be to ensure that the concentration of carbon dioxide in the air is within a suitable range. Therefore, by using the air quality parameters within the clustered area as a basis, the air delivery power of each mobile fan unit can be reliably adjusted, ensuring the blowing efficiency and effect of the mobile fan unit.

[0039] In particular, in this invention, the control unit determines the displacement of the human body contour based on the key point connection diagram of the human body contour in the dispersed area after the image analysis unit determines that the human body contour distribution is in a dispersed state. In actual practice, in the dispersed state where the distribution of workers in the factory is relatively sparse, the workers are in an active working state. The displacement of the human body contour represents the intensity of their movements. Since the movement accelerates blood circulation, the workers will generate heat and sweat. Moreover, the greater the intensity of the workers' activities, the higher the carbon dioxide content in the surrounding air. In some work scenarios, the greater the intensity of activities, the more dust will be stirred up. Therefore, the air supply power of the mobile fan unit in the corresponding work area is adjusted based on the displacement. This improves the working efficiency and effect of the fan while saving energy, thereby improving the air quality of the factory and improving the comfort of the workers. Attached Figure Description

[0040] Figure 1 A schematic diagram of the structure of an intelligent electric fan with air quality monitoring according to an embodiment of the invention;

[0041] Figure 2 This is a schematic diagram of the mobile fan unit structure according to an embodiment of the invention;

[0042] In the diagram, 1: image acquisition unit, 2: moving track, 3: air quality acquisition unit, 4: moving fan unit, 41: rotating rod, 42: moving unit, and 43: blade unit. Detailed Implementation

[0043] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0044] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0045] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0046] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 according to the specific circumstances.

[0047] Please see Figure 1 As shown, this is a schematic diagram of a smart electric fan with air quality monitoring according to an embodiment of the present invention. The smart electric fan with air quality monitoring of the present invention includes:

[0048] The mobile air blowing device includes several mobile fan units 4 installed on the mobile track 2 on the top of the factory building, for blowing air into different areas of the factory building;

[0049] The detection device includes an air quality acquisition unit 3 installed on the mobile fan unit 4 for collecting air quality parameters and an image acquisition unit 1 installed on the top of the factory building for collecting panoramic images of the factory building.

[0050] The central control processor, connected to the mobile blower and the detection device, includes an image analysis unit and a control unit connected to each other.

[0051] The image analysis unit is used to acquire the panoramic image of the factory building acquired by the image acquisition unit 1, and to determine the distribution state of the human body contours based on the human body contours in the panoramic image of the factory building. The distribution state of the human body contours includes a clustered distribution state and a dispersed distribution state.

[0052] The control unit is used to determine the clustered distribution state of the human body contour when the image analysis unit determines that the distribution state is clustered, to control each mobile fan unit 4 to move to the clustered area, and to adjust the air supply power of each mobile fan unit 4 based on the air quality parameters in the clustered area.

[0053] In addition, the system is used to determine the dispersed region when the image analysis unit determines that the human body contour distribution is in a dispersed distribution state, control each of the mobile fan units 4 to move to the corresponding dispersed region, and acquire the region image of the dispersed region. Based on the line diagram of the human body contour corresponding to the joint point in the region image, the system determines the amount of motion within a predetermined period, and adjusts the air supply power of the mobile fan unit 4 in the dispersed region based on the amount of motion.

[0054] Specifically, please refer to Figure 2 As shown, the mobile fan unit 4 includes a blade unit 43. The blade unit 43 is connected to a rotating rod 41 via a freely rotatable movable unit 42, so that the blade unit 43 can freely change the blowing direction. The rotating rod 41 is movably connected to the mobile track 2, so that the blade unit 43 can move on the mobile track 2.

[0055] Specifically, this embodiment does not limit the specific form in which the mobile fan unit moves on the track. In the prior art, the free movement of the remote control device on the track is a mature existing technology, and will not be elaborated here.

[0056] Specifically, the present invention does not limit the specific structure of the blade unit 43, as long as it can perform the function of blowing air to different areas in the factory, and will not be described in detail.

[0057] Specifically, the present invention does not limit the specific structure of the active unit 42. It can be a multi-degree-of-freedom active joint, which only needs to be able to perform the function of making the blade unit 43 rotate around it. No further details will be provided.

[0058] Specifically, the present invention does not limit the specific structure of the air quality acquisition unit 3. It can be a carbon dioxide sensor, which only needs to be able to detect the carbon dioxide concentration in the factory area. This is an existing mature technology and will not be described in detail here.

[0059] Specifically, the present invention does not limit the specific structure of the image acquisition unit 1. It can be a camera, as long as it can perform the function of image acquisition. It is an existing mature technology and will not be described in detail.

[0060] Specifically, the present invention does not limit the specific structure of the driving device. It can be a motor, and the air supply power of the mobile fan unit 4 can be adjusted by controlling the power of the motor. It only needs to be able to perform the functions of driving the mobile fan unit 4 to move and adjusting the air supply power of the mobile fan unit 4, which will not be described in detail.

[0061] Specifically, the present invention does not limit the specific form of the central control processor, which can be an external computer, and the various units therein are different functional programs in the computer. It only needs to be able to complete the functions of data exchange and data processing, which will not be elaborated further.

[0062] Specifically, the image analysis unit calculates the average distance Δde between each human figure contour in the panoramic image of the factory and the remaining human figure contours according to formula (1).

[0063]

[0064] In formula (1), △d i The distance between the i-th human silhouette and the remaining human silhouettes in the panoramic image of the factory is represented by m, where m represents the number of human silhouettes in the panoramic image of the factory.

[0065] Specifically, the image analysis unit determines the distribution of human body contours based on the human body contours in the panoramic image of the factory building, wherein...

[0066] The image analysis unit compares the average distance between each human figure outline in the panoramic image of the factory and the remaining human figure outlines with a preset outline distance comparison threshold Δde0, where 5m < Δde0 < 10m.

[0067] If the comparison result satisfies the first distance condition, the image analysis unit determines that the human body contour distribution state is a clustered distribution state;

[0068] If the comparison result satisfies the second distance condition, the image analysis unit determines that the human body contour distribution state is a dispersed distribution state;

[0069] Wherein, the first distance condition is that the average distance between each human body contour in the panoramic image of the factory and the remaining human body contours is less than the contour distance comparison threshold, and the second distance condition is that the average distance between each human body contour in the panoramic image of the factory and the remaining human body contours is greater than or equal to the contour distance comparison threshold.

[0070] In this embodiment, the purpose of setting the contour distance comparison threshold is to distinguish between clustered and dispersed states. Those skilled in the art can set the contour distance comparison threshold within the distance interval [5,10], where the unit of the distance interval is meters.

[0071] Specifically, in this invention, the image analysis unit acquires the panoramic image of the factory building acquired by the image acquisition unit 1, and determines the distribution state of the human body contours based on the average distance between each human body contour in the panoramic image and the remaining human body contours. In practice, the smaller the average distance between each human body contour and the remaining human body contours, the denser the distribution of workers in the factory building. Therefore, the average distance between each human body contour and the remaining human body contours can reliably represent the distribution of workers in the factory building, i.e., the distribution state of the human body contours. This facilitates the subsequent control of the distribution position of each mobile fan unit 4 for different human body contour distribution states, ensuring the working efficiency and effect of the mobile fan unit 4. On the basis of saving energy, it improves the working efficiency and effect of the fan, thereby improving the air quality of the factory and improving the comfort of the workers.

[0072] Specifically, the control unit determines the clustering area. The control unit establishes a first rectangular coordinate system with the center of the panoramic image of the factory as the origin, and determines the coordinates corresponding to the center points of each human body contour. It also determines the maximum horizontal coordinate, minimum horizontal coordinate, maximum vertical coordinate, and minimum vertical coordinate. A rectangular area is constructed with the distance between the lines connecting the maximum and minimum horizontal coordinates as the width and the distance between the lines connecting the maximum and minimum vertical coordinates as the length. The rectangular area is then defined as the clustering area.

[0073] Specifically, the control unit determines the dispersed region when the image analysis unit determines that the human body contour distribution is in a dispersed distribution state, wherein...

[0074] The control unit constructs several circular regions with the center of each human figure's outline in the panoramic image of the factory as the origin and a preset length threshold as the radius, and defines the circular regions as dispersed regions.

[0075] The preset length threshold is set within the range of [0,5], with the unit being meters.

[0076] Specifically, the control unit controls each of the mobile fan units 4 to move to its corresponding dispersed area, wherein,

[0077] The control unit controls the mobile fan unit 4 to move to the dispersed area one by one, so that only a single mobile fan unit 4 exists in each dispersed area.

[0078] Specifically, in this invention, the control unit determines the placement of each mobile fan unit 4 based on the human body contour distribution determined by the image analysis unit. In actual situations, when the workers in the factory are densely distributed, the mobile fan unit 4 is moved to the densely distributed area to blow air. When the workers in the factory are sparsely distributed, the mobile fan unit 4 is moved to each dispersed area to deliver air to the workers in each dispersed area. This improves the blowing effect of the mobile fan unit 4, increases the working efficiency and effect of the fan while saving energy, thereby improving the air quality in the factory and increasing worker comfort.

[0079] Specifically, the control unit adjusts the air supply power of each mobile fan unit 4 based on the air quality parameters within the aggregation area, wherein,

[0080] The air quality parameters include carbon dioxide concentration. The control unit determines the carbon dioxide concentration in the aggregation area and controls the air supply power of each mobile fan unit 4 to be proportional to the carbon dioxide concentration.

[0081] In this embodiment, the air supply power is set to P = P0 × C / C0, where P0 is the standard air supply power, which is half of the maximum air supply power of the mobile fan unit 4, C represents the current carbon dioxide concentration, and C0 represents the standard carbon dioxide concentration, which is calculated based on the average carbon dioxide concentration ΔC in the factory over one month. C0 is set to 3 × ΔC.

[0082] Specifically, in this invention, when the image analysis unit determines that the human body contour distribution is in a clustered distribution state, the control unit adjusts the air supply power of each mobile fan unit 4 based on the air quality parameters within the clustered area. In actual situations, in a densely distributed clustered distribution state of workers in a factory, the concentration of carbon dioxide in the air increases due to the large number of people gathered, affecting breathing comfort. Moreover, the higher the concentration of carbon dioxide in the air, the higher the air supply power of the mobile fan unit 4 should be to ensure that the concentration of carbon dioxide in the air is within a suitable range. Therefore, by using the air quality parameters within the clustered area as a basis, the air supply power of each mobile fan unit 4 can be reliably adjusted, ensuring the blowing efficiency and effect of the mobile fan unit 4.

[0083] Specifically, the control unit determines the joint point connection diagram of the human body contour in each of the region images, wherein,

[0084] The joints in the joint connection diagram include the head position joint, the first hand position joint, the second hand position joint, the first foot position joint, and the second foot position joint.

[0085] The head position joint is the center of the head contour of the human body, the first hand position joint is the center of the left hand contour of the human body, the second hand position joint is the center of the right hand contour of the human body, the first foot position joint is the center of the left foot contour of the human body, and the second foot position joint is the center of the right foot contour of the human body.

[0086] Specifically, the present invention does not limit the specific image algorithm for recognizing human body contours in images. In this embodiment, a model capable of recognizing human body contours in images can be pre-built and imported into the central control processor to complete the human body contour recognition function. This is existing technology and will not be described in detail here.

[0087] Specifically, the control unit determines the motion amount based on the line drawing of the human body contour corresponding to the joint points in the region image, wherein the control unit calculates the motion amount according to formula (2).

[0088]

[0089] In formula (2), Li represents the displacement of the i-th joint within a predetermined period, where i is an integer greater than 0.

[0090] In this embodiment, the predetermined period can be set within the range [5,30], where the unit of the range is minutes.

[0091] Specifically, the control unit adjusts the air delivery power of the mobile fan unit 4 based on the amount of motion, wherein,

[0092] The control unit controls the air supply power of the mobile fan unit 4 to be directly proportional to the amount of motion.

[0093] In this embodiment, the air supply power is set to P = P0 × E / E0, where P0 is the standard air supply power, which is half of the maximum air supply power of the mobile fan unit 4, E represents the amount of action, and E0 represents the standard amount of action, which is determined based on the average amount of action corresponding to the work of several workers within a predetermined period. The average amount of action is determined as the standard amount of action.

[0094] Specifically, in this invention, the control unit determines the displacement of the human body contour based on the key point connection diagram of the human body contour in the dispersed area after the image analysis unit determines that the human body contour distribution is in a dispersed state. In actual practice, in the dispersed state where the distribution of workers in the factory is relatively sparse, the workers are in an active working state. The displacement of the human body contour represents the intensity of their movements. Since the movement accelerates blood circulation, the workers will heat up and sweat. Moreover, the greater the intensity of the workers' activities, the higher the carbon dioxide content in the surrounding air. In some work scenarios, the greater the intensity of activities, the more dust will be stirred up. Therefore, the air supply power of the mobile fan unit 4 in the corresponding work area is adjusted based on the displacement. This improves the working efficiency and effect of the fan while saving energy, thereby improving the air quality of the factory and improving the comfort of the workers.

[0095] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A smart electric fan with air quality monitoring, characterized in that, include: A mobile air blowing device, comprising several mobile fan units mounted on a moving track on the top of the factory building, for blowing air into different areas of the factory building; The detection device includes an air quality acquisition unit installed on the mobile fan unit for collecting air quality parameters and an image acquisition unit installed on the top of the factory building for collecting panoramic images of the factory building. The central control processor, connected to the mobile blower and the detection device, includes an image analysis unit and a control unit connected to each other. The image analysis unit is used to acquire the panoramic image of the factory building acquired by the image acquisition unit, and to determine the distribution state of the human body contours based on the human body contours in the panoramic image of the factory building. The distribution state of the human body contours includes a clustered distribution state and a dispersed distribution state. The control unit is used to determine the clustered distribution state of the human body contour as determined by the image analysis unit, identify the clustered area, control each mobile fan unit to move to the clustered area, and adjust the air supply power of each mobile fan unit based on the air quality parameters in the clustered area. In addition, the system is used to determine the dispersed region when the image analysis unit determines that the human body contour distribution is in a dispersed distribution state, control each of the mobile fan units to move to the corresponding dispersed region, and acquire the region image of the dispersed region. Based on the line diagram of the human body contour corresponding to the joint point in the region image, the system determines the amount of motion within a predetermined period, and adjusts the air supply power of the mobile fan unit based on the amount of motion.

2. The intelligent electric fan with air quality monitoring according to claim 1, characterized in that, The image analysis unit calculates the average distance Δde between each human figure contour in the panoramic image of the factory and the remaining human figure contours according to formula (1). In formula (1), △d i The distance between the i-th human silhouette and the remaining human silhouettes in the panoramic image of the factory is represented by m, where m represents the number of human silhouettes in the panoramic image of the factory.

3. The intelligent electric fan with air quality monitoring according to claim 2, characterized in that, The image analysis unit determines the distribution of human body contours based on the human body contours in the panoramic image of the factory building, wherein... The image analysis unit compares the average distance between each human figure outline in the panoramic image of the factory and the remaining human figure outlines with a preset outline distance comparison threshold. If the comparison result satisfies the first distance condition, the image analysis unit determines that the human body contour distribution state is a clustered distribution state; If the comparison result satisfies the second distance condition, the image analysis unit determines that the human body contour distribution state is a dispersed distribution state; Wherein, the first distance condition is that the average distance between each human body contour in the panoramic image of the factory and the remaining human body contours is less than the contour distance comparison threshold, and the second distance condition is that the average distance between each human body contour in the panoramic image of the factory and the remaining human body contours is greater than or equal to the contour distance comparison threshold.

4. The intelligent electric fan with air quality monitoring according to claim 3, characterized in that, The control unit determines the aggregation area, wherein... The control unit establishes a first rectangular coordinate system with the center of the panoramic image of the factory as the origin, and determines the coordinates corresponding to the center points of each human body contour. It also determines the maximum horizontal coordinate, minimum horizontal coordinate, maximum vertical coordinate, and minimum vertical coordinate. A rectangular area is constructed with the distance between the lines connecting the maximum and minimum horizontal coordinates as the width and the distance between the lines connecting the maximum and minimum vertical coordinates as the length. The rectangular area is then defined as the cluster area.

5. The intelligent electric fan with air quality monitoring according to claim 4, characterized in that, The control unit determines the dispersed region when the image analysis unit determines that the human body contour distribution is in a dispersed distribution state. The control unit constructs several circular regions with the center of each human figure's outline in the panoramic image of the factory as the origin and a preset length threshold as the radius, and defines the circular regions as dispersed regions.

6. The intelligent electric fan with air quality monitoring according to claim 5, characterized in that, The control unit controls each of the mobile fan units to move to its corresponding dispersed area, wherein... The control unit controls the mobile fan units to move to the dispersed areas one by one, so that only a single mobile fan unit exists in each dispersed area.

7. The intelligent electric fan with air quality monitoring according to claim 6, characterized in that, The control unit adjusts the air delivery power of each mobile fan unit based on the air quality parameters within the aggregation area, wherein, The air quality parameters include carbon dioxide concentration. The control unit determines the carbon dioxide concentration in the aggregation area and controls the air supply power of each mobile fan unit to be proportional to the carbon dioxide concentration.

8. The intelligent electric fan with air quality monitoring according to claim 1, characterized in that, The control unit determines the joint point connection diagram of the human body contour in each of the region images, wherein, The joints in the joint connection diagram include the head position joint, the first hand position joint, the second hand position joint, the first foot position joint, and the second foot position joint.

9. The intelligent electric fan with air quality monitoring according to claim 8, characterized in that, The control unit determines the motion amount based on the line drawing of the human body contour corresponding to the joint points in the region image, wherein the control unit calculates the motion amount according to formula (2). In formula (2), Li represents the displacement of the i-th joint within a predetermined period, where i is an integer greater than 0.

10. The intelligent electric fan with air quality monitoring according to claim 9, characterized in that, The control unit adjusts the air delivery power of the mobile fan unit based on the action amount, wherein, The control unit controls the air delivery power of the mobile fan unit to be directly proportional to the amount of motion.

Images