Multi-mode floor fan based on regional distribution optimization

Abstract

The invention discloses a multi-mode floor fan based on regional distribution optimization. The multi-mode floor fan comprises a base, a stand column, fan blades, an air supply motor, a head shaking motor, a human body induction radar module and a thermal imager, the radar module is combined to detect the number, positions and activity states of people in the air supply area in real time, the thermal imager senses the environment temperature and the body surface temperature, the rotating speed of the air supply motor and the rotating speed of the head shaking motor can be dynamically adjusted, accurate distribution of the air volume and optimization of the air supply direction are achieved, and wind power waste of the unmanned area is avoided. The device adopts a dynamic speed regulation mechanism, so that the air volume is uniformly distributed according to the activity state and distance of personnel, and the comfort and the energy efficiency are improved. The system is suitable for families, offices and public places, and has the characteristics of energy conservation and high efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of smart home appliances, and in particular to a multi-mode floor fan based on regional distribution optimization. Background Art

[0002] The current floor fan technology is mostly limited to a single air supply mode, and it is impossible to dynamically adjust the wind force according to the distribution and activity status of people in the room, resulting in low wind utilization efficiency, high energy consumption and insufficient experience. For example, traditional fans still supply air in unmanned areas, which will cause waste, and the air supply in multi-person areas is unevenly distributed, affecting the user experience. Reference document CN202410803581.6 proposes a floor fan based on a human body sensing radar module, which can sense the distribution of people through the radar module to achieve simple wind force optimization, but it has deficiencies in dynamic speed regulation, wind force distribution in multi-person areas and temperature response. On the basis of the reference technology, the present invention combines the human body sensing radar module and the thermal imager to achieve dynamic optimization and adjustment of air volume and temperature, thereby improving comfort and energy efficiency. Summary of the invention

[0003] The object of the present invention is to provide a multi-mode floor fan based on regional distribution optimization to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A multi-mode floor fan based on regional distribution optimization, comprising:

[0006] Base;

[0007] A column, arranged on the base;

[0008] The air supply motor and the shaking motor are both arranged at the upper end of the column;

[0009] The fan blades are driven to rotate by the air supply motor;

[0010] A human body sensing radar module is installed on the column and is used to detect the number, position and orientation information of people in the air supply area;

[0011] A PLC controller is electrically connected to the human body sensing radar module, the air supply motor and the shaking motor;

[0012] A thermal imager, arranged above the column, in line with the blowing direction of the fan blade and electrically connected to the PLC controller;

[0013] The human body sensing radar module is used to detect the unmanned area and the occupied area in the air supply area in real time, and the PLC controller controls the air supply motor and the shaking motor through the frequency converter to reduce the waste of wind power in the unmanned area.

[0014] Preferably, the thermal imager is used to detect the body surface temperature of a person in real time. When the body surface temperature is detected to be higher than 37°C, the PLC controller reduces the speed of the air supply motor and increases the speed of the shaking head motor; when the body surface temperature is detected to be lower than or equal to 37°C, the PLC controller increases the speed of the air supply motor and reduces the speed of the shaking head motor.

[0015] Preferably, when the human body sensing radar module detects that there are two or more people in the air supply area, the PLC controller calculates the angle range of the unmanned area based on the orientation information and distance between the people, and controls the shaking motor to speed up the shaking speed within the angle range of the unmanned area, and slow down the shaking speed within the angle range of the manned area.

[0016] Preferably, the diameter of the fan blade is adapted to the shaking angle range controlled by the shaking motor, and the PLC controller determines whether to reduce the wind coverage of the unmanned area based on the calculation result of the personnel distance.

[0017] Preferably, the thermal imager generates a thermal image in the air supply area in real time by receiving infrared radiation, and analyzes the activity status of the personnel through the PLC controller; when it is detected that the personnel is in a stationary state, the PLC controller controls the air supply motor and the shaking motor to keep running at a low speed; when it is detected that the personnel is in an active state, the PLC controller appropriately increases the speed of the air supply motor and the shaking motor (4).

[0018] Preferably, the PLC controller combines the personnel distance information obtained by the human body sensing radar module to dynamically adjust the rotation speed of the air supply motor according to different distance positions, so that the wind force output by the fan blades is evenly distributed at different distances.

[0019] Preferably, the human body sensing radar module is combined with the detection data of the thermal imager to dynamically analyze the ambient temperature and personnel distribution in the air supply area, and the PLC controller optimizes the operation mode of the air supply motor and the shaking motor according to the detection data.

[0020] Preferably, the human body sensing radar module has an azimuth detection function, which can calculate the angle and distance between a person and the floor fan. The PLC controller controls the rotation range of the shaking motor based on the detection result, so that the air supply direction of the fan blade is always close to the area where people are.

[0021] Preferably, the fan blades are made of high-efficiency and low-noise material, and a shock-absorbing module is arranged inside the column to reduce vibration noise when the fan is running.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. This multi-mode floor fan based on regional distribution optimization detects the number, location and activity status of people in the room in real time through a human body sensing radar module and a thermal imager, realizes intelligent distribution optimization of the air supply area, and reduces wind waste in unmanned areas.

[0024] 2. This multi-mode floor fan based on regional distribution optimization, dynamic speed regulation and head shaking angle optimization control, ensures uniform air volume distribution in multi-person areas, while improving the accuracy and comfort of air supply, significantly improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 : Schematic diagram of the overall structure of a multi-mode floor fan based on regional distribution optimization of the present invention;

[0026] Figure 2 : Detection schematic diagram of the human body sensing radar module of the present invention;

[0027] Figure 3 : Schematic diagram of the working principle of dynamic air supply optimization described in the present invention;

[0028] Figure 4 : Schematic diagram of temperature sensing operation of the thermal imager of the present invention;

[0029] Figure 5 : PLC control logic block diagram of the present invention.

[0030] In the figure:

[0031] 1. Base, 2. Column, 3. Air supply motor, 4. Shaking motor, 5. Fan blades, 6. Human body sensing radar module, 7. PLC controller, 8. Thermal imager. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 5 As shown, a technical solution provided by the present invention is:

[0034] A multi-mode floor fan based on regional distribution optimization, comprising:

[0035] Base;

[0036] A column, arranged on the base;

[0037] The air supply motor and the shaking motor are both arranged at the upper end of the column;

[0038] The fan blades are driven to rotate by the air supply motor;

[0039] A human body sensing radar module is installed on the column and is used to detect the number, position and orientation information of people in the air supply area;

[0040] A PLC controller is electrically connected to the human body sensing radar module, the air supply motor and the shaking motor;

[0041] A thermal imager, arranged above the column, in line with the blowing direction of the fan blade and electrically connected to the PLC controller;

[0042] The human body sensing radar module detects the unmanned area and the manned area in the air supply area in real time, and the PLC controller controls the air supply motor and the shaking motor through the frequency converter to reduce the waste of wind power in the unmanned area.

[0043] like Figure 1 As shown, the multi-mode floor fan based on regional distribution optimization of the present invention comprises a base (1), a column (2), an air supply motor (3), an oscillating motor (4), a fan blade (5), a human body sensing radar module (6), a PLC controller (7) and a thermal imager (8). The base (1) provides stable support for the entire device, and is made of high-strength plastic and metal composite materials. A shock-absorbing module is installed inside to reduce vibration and noise during fan operation. At the same time, an anti-skid pad is provided at the bottom of the base to ensure the stability of the device on different ground surfaces. The column (2) connects the base (1) and the air supply component. The exterior is made of anodized aluminum alloy. The interior of the column is provided with a power line and a signal line to ensure stable transmission of data and power. The air supply motor (3) and the oscillating motor (4) are fixed to the top of the column, and are equipped with a human body sensing radar module (6) and a thermal imager (8). The air supply motor (3) adopts a DC brushless motor, which has the characteristics of high efficiency, low noise and long life, and drives the fan blade (5) to rotate. The diameter of the fan blades can be adjusted according to the specific application scenario, usually 30cm to 45cm. They are made of composite materials and have an aerodynamic curved surface design, which can reduce airflow resistance and improve air supply efficiency.

[0044] The shaking motor (4) changes the air supply direction by controlling the shaking angle of the fan blade (5), and the shaking angle range is 60° to 120°. The control of the motor is handled by the PLC controller (7), which can be dynamically adjusted according to the distribution of personnel. The human body sensing radar module (6) is installed on the upper part of the column, using a 77GHz millimeter wave radar sensor, with a detection range of 120°, a maximum detection distance of 8 meters, and an accuracy of ±3°, and can monitor the number, position and activity status of personnel in the air supply area in real time. The thermal imager (8) is located at the top of the column, consistent with the air supply direction of the fan blade, and monitors the ambient temperature and the body surface temperature of personnel in the air supply area in real time. The resolution is 160×120 pixels, the temperature detection range is -20°C to 50°C, and the accuracy is ±0.5°C. The PLC controller (7) is located inside the column, electrically connected to each component, and receives data from the radar module and the thermal imager in real time through the data bus, and dynamically adjusts the speed and shaking angle of the air supply motor (3) and the shaking motor (4) according to these data to achieve accurate distribution and optimization of wind power.

[0045] When the human body sensing radar module (6) detects that there is an unmanned area in the air supply area, the PLC controller adjusts the speed of the air supply motor (3) through the frequency converter to reduce the wind waste in the area. At the same time, the shaking motor (4) will speed up the swing speed in the unmanned area so as to cover other areas more quickly. When the radar module detects the distribution of multiple people, the PLC controller dynamically adjusts the swing angle of the shaking motor according to the position information and spacing of the people, so that the wind flow is concentrated in the area where the people are located, ensuring the uniform distribution of the air volume.

[0046] The thermal imager (8) adjusts the wind speed and shaking angle in real time according to the body surface temperature. If it is detected that the body surface temperature of the person is higher than 37°C, the PLC controller will reduce the speed of the air supply motor (3) and increase the speed of the shaking motor (4) to provide a softer wind flow to avoid discomfort caused by excessive wind speed; conversely, when the body surface temperature is lower than or equal to 37°C, the speed of the air supply motor (3) is increased and the shaking motor (4) is decelerated to provide a concentrated and fast cooling wind flow. The system combines the real-time data analysis of the radar module and the thermal imager to intelligently adjust the air supply direction and air volume distribution, improve comfort and effectively save energy.

[0047] In order to verify the performance of this device, several experiments were conducted. Experiment 1 tested the uniformity and response time of air volume distribution in the air supply area where 3 people were distributed within a 90° range. The experimental results show that the system has a response time of 1.2 seconds, the air volume uniformity is improved by 25%, and the air volume waste in the unmanned area is reduced by about 40%, and the energy consumption is significantly reduced. Experiment 2 tested the body temperature response performance, and the changes in wind speed and shaking motor speed when the body surface temperature is 37°C and below 37°C in a 30°C environment. The experimental results show that when the body surface temperature exceeds 37°C, the wind speed decreases by 15%, the shaking speed increases by 20%, and the user comfort score increases by 30%; when the body surface temperature is below 37°C, the cooling efficiency increases by about 20%.

[0048] The design of the present invention not only improves the efficiency of wind power utilization and avoids the waste of wind power of traditional fans in unmanned areas, but also optimizes the wind speed and shaking angle according to the body temperature and activity status of personnel, significantly improving the comfort of users and the energy efficiency of equipment. This technical solution can be widely used in homes, offices and public places, and is particularly suitable for environments with high requirements for energy saving and comfort.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multi-mode floor fan based on regional distribution optimization, characterized in that: include: Base (1); A column (2) is arranged on the base (1); The air supply motor (3) and the shaking motor (4) are both arranged at the upper end of the column (2); The fan blades (5) are driven to rotate by the air supply motor (3); A human body sensing radar module (6) is installed on the column (2) and is used to detect the number, position and orientation information of people in the air supply area; A PLC controller (7) is electrically connected to the human body sensing radar module (6), the air supply motor (3) and the shaking motor (4); A thermal imager (8) is arranged above the column (2), is consistent with the blowing direction of the fan blade (5), and is electrically connected to the PLC controller (7); The human body sensing radar module (6) detects in real time the unmanned area and the manned area in the air supply area, and the PLC controller (7) controls the air supply motor (3) and the shaking motor (4) through a frequency converter to reduce the waste of wind power in the unmanned area.

2. The multi-mode floor fan based on regional distribution optimization according to claim 1, characterized in that: The thermal imager (8) is used to detect the body surface temperature of a person in real time. When the body surface temperature is detected to be higher than 37° C., the PLC controller (7) reduces the rotation speed of the air supply motor (3) and increases the rotation speed of the oscillating motor (4); when the body surface temperature is detected to be lower than or equal to 37° C., the PLC controller (7) increases the rotation speed of the air supply motor (3) and reduces the rotation speed of the oscillating motor (4).

3. The multi-mode floor fan based on regional distribution optimization according to claim 1, characterized in that: When the human body sensing radar module (6) detects that there are two or more persons in the air supply area, the PLC controller (7) calculates the angle range of the unmanned area based on the position information and spacing of the persons, and controls the shaking motor (4) to speed up the shaking speed within the angle range of the unmanned area and slow down the shaking speed within the angle range of the manned area.

4. The multi-mode floor fan based on regional distribution optimization according to claim 1, characterized in that: The diameter of the fan blade (5) is adapted to the range of the shaking angle controlled by the shaking motor (4), and the PLC controller (7) determines whether to reduce the wind coverage of the unmanned area based on the calculation result of the personnel distance.

5. The multi-mode floor fan based on regional distribution optimization according to claim 1, characterized in that: The thermal imager (8) generates a thermal image of the air supply area in real time by receiving infrared radiation, and analyzes the activity status of the personnel through the PLC controller (7); when it is detected that the personnel is in a stationary state, the PLC controller (7) controls the air supply motor (3) and the shaking motor (4) to maintain low speed operation; when it is detected that the personnel is in an active state, the PLC controller (7) appropriately increases the rotation speed of the air supply motor (3) and the rotation speed of the shaking motor (4).

6. The multi-mode floor fan based on regional distribution optimization according to claim 1, characterized in that: The PLC controller (7) combines the personnel distance information obtained by the human body sensing radar module (6) to dynamically adjust the rotation speed of the air supply motor (3) according to different distance positions, so that the wind force output by the fan blades (5) is evenly distributed at different distances.

7. The multi-mode floor fan based on regional distribution optimization according to claim 1, characterized in that: The human body sensing radar module (6) is combined with the detection data of the thermal imager (8) to dynamically analyze the ambient temperature and personnel distribution in the air supply area, and the PLC controller (7) optimizes the operation mode of the air supply motor (3) and the shaking motor (4) according to the detection data.

8. The multi-mode floor fan based on regional distribution optimization according to claim 1, characterized in that: The human body sensing radar module (6) has an orientation detection function and is capable of calculating the angle and distance between a person and the floor fan. The PLC controller (7) controls the rotation range of the oscillating motor (4) based on the detection result, so that the air supply direction of the fan blade (5) always approaches the area where people are present.

9. The multi-mode floor fan based on regional distribution optimization according to claim 1, characterized in that: The fan blades (5) are made of high-efficiency, low-noise material, and a shock-absorbing module is arranged inside the column (2) to reduce vibration noise when the fan is running.

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