Tracking type radiant heating system based on directional heat transfer metamaterial

Abstract

The utility model belongs to the field of heat radiation, building heating energy-saving heat and heat radiation regulation and control, and relates to a tracking type radiation heating system based on a directional heat transmission metamaterial, which comprises a personnel positioning tracking module, a directional heat radiation module and a controller. Indoor personnel positioning is achieved through the personnel positioning and tracking module, the directional heat radiation module achieves infrared radiation directional transmission of personnel through metamaterials, the rotation angle and radiation power of the directional heat radiation module are controlled through the controller, and the function of personnel tracking personalized heat radiation heating is achieved. And the purposes of reducing heating energy consumption and creating a comfortable thermal environment are achieved. The system can identify and track the positions of indoor personnel, heat radiation energy is focused on specific parts of a human body through a heat radiation directional transmission technology to achieve personalized local heat supply, a heating system is prevented from heating a plurality of rooms at the same time, and the purpose of saving energy is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of building heating energy saving and heat radiation control, and relates to a tracking radiation heating system based on directional heat transmission metamaterial. Background Art

[0002] Building operating energy consumption in my country accounts for 21% of the nation's total energy consumption. Reducing building energy consumption can significantly advance energy conservation and carbon reduction goals. Common building heating methods currently include convection heating and radiant heating. Convection heating heats the indoor air to create a warm atmosphere. Radiant heating solutions, such as electric heating films and hot water floor heating, rely on blackbody radiation theory to emit infrared heat into the room. The room's surrounding structures and other objects absorb the radiant energy and then radiate it back to the human body. Compared to other heating methods, radiant heating systems are convenient to operate and provide a more uniform longitudinal temperature in the room, enhancing comfort. However, conventional heat radiation sources typically radiate heat in all directions within the space. The omnidirectional nature of heat radiation makes it difficult to control this heat, resulting in excessive heat dispersion within the room and inefficient heat accumulation in areas where people move. This results in increased heating energy consumption and reduced energy efficiency. Therefore, concentrating the energy radiated by the heat source within a specific angle range to achieve directional heat radiation, while tracking and ensuring the distribution of areas and personnel to achieve regional and precise temperature regulation is a key technology for reducing building energy consumption and efficiently creating a thermally comfortable environment, and has great application prospects in the field of building energy conservation.

[0003] At present, the strategies reported in research on the realization of directional thermal radiation mainly include two aspects. On the one hand, the purpose of controlling the directionality of radiation is achieved by controlling the reflectivity of special optical materials in different directions. On the other hand, the directional transmission of thermal radiation is achieved by controlling the emissivity of the thermal radiation source in various directions through special artificial structures or special materials. However, the directional characteristics of this type of thermal radiation usually depend on the working wavelength, and its radiation direction will change with the radiation wavelength. Metamaterials are a new type of artificially designed composite material with subwavelength characteristic scales. They can achieve special properties that natural materials do not have. They can be used to control light waves at the subwavelength scale, which provides unlimited possibilities for the design of new directional thermal radiation control. By designing the parameters of metamaterial media, light waves can be controlled to produce critical coupling, plasma-phonon coupling, Fano resonance and guided mode resonance to achieve thermal radiation direction control. Yunbin Ying et al. (Yunbin Ying, Jianbo Yu, Bing Qin, et al. Directional Thermal Emission Covering Two Atmospheric Windows[J]. Laser & PhotonicsReviews, 2023, 17(11): 1-8.) sputtered deposited Ge (germanium) film on a flexible PEI (polyetherimide) substrate to form a PEI / Ge multilayer composite material. This material exhibits high emissivity characteristics (emissivity > 0.9) only within the 76°-84° angle range for infrared radiation in the 8-14μm wavelength range, which can achieve narrow-angle infrared directional thermal radiation.

[0004] The latest research on personnel positioning and tracking heating has also been reported. Patent CN 115468212 A discloses a human body tracking heating device based on directional radiation from a high-temperature heat source. It uses millimeter-wave radar to locate personnel, and uses coreless carbon fiber materials, molybdenum disilicide or tungsten filaments to generate infrared thermal radiation. The position of the lens and reflector is adjusted according to the position of the personnel to achieve directional thermal radiation. However, this patented technology uses a high-temperature heat source, which has certain safety hazards; Patent CN 115468213 A discloses a directional tracking human body radiation heating device based on infrared lasers. It uses infrared lasers as a thermal radiation source and automatically adjusts the light source emission power according to the number of people in the room. However, the lenses and reflectors used in the two patents are complex in structure and difficult to miniaturize; especially when used in indoor multi-person scenes, there are problems such as large systems and difficult layout. Utility Model Content

[0005] The problem to be solved by the present invention is: in view of the problems of high energy consumption and insufficient flexibility of traditional heating methods, as well as the defects of safety hazards, large system and complex structure of existing personnel tracking radiant heating systems, a tracking radiant heating system based on thermal radiation directional transmission metamaterial is provided. The metamaterial can realize directional transmission of infrared radiation, and use personnel positioning and tracking modules (binocular cameras, infrared cameras, etc.) to realize indoor personnel positioning. The controller controls the rotation angle and radiation power of the directional thermal radiation module to realize the function of personnel tracking and personalized thermal radiation heating, and achieve the purpose of reducing heating energy consumption and creating a comfortable thermal environment.

[0006] The technical solution of the utility model is as follows:

[0007] A tracking radiant heating system based on directional heat transfer metamaterials includes a personnel positioning and tracking module 1, a directional heat radiation module 2, and a controller 3. The personnel positioning and tracking module 1 includes a binocular camera and an infrared camera. The directional heat radiation module 2 includes a substrate 21, an electrothermal film 22, a directional heat radiation metamaterial coating 23, a radiation power controller 24, and an omnidirectional rotation axis 25. The directional heat radiation metamaterial coating 23 is applied to the surface of the electrothermal film 22, which is adhered to the back of the substrate 21, forming a three-layer structure. The omnidirectional rotation axis 25 is mounted on the ceiling of the room and on the back of the substrate 21, allowing the orientation and angle of the directional heat radiation module 2 to be adjusted. The radiation power controller 24 is mounted on the back of the substrate 21 and connected to the electrothermal film 22. It controls the operating voltage and thus the radiation power of the electrothermal film 22, achieving heat control. The controller 3 contains a single-chip microcomputer and a communication module, enabling control of the entire heating system.

[0008] The personnel positioning and tracking modules 1 are equipped with at least two modules, which are installed on two different walls in the room to capture indoor photos for personnel positioning; the directional thermal radiation modules 2 are equipped with several modules to form an array and are suspended on the ceiling of the room; the controller 3 is placed indoors to receive data from the personnel positioning and tracking modules 1 and the directional thermal radiation modules 2, and to control the operation of both.

[0009] The personnel positioning and tracking module 1 includes a binocular camera and an infrared camera, which capture indoor photos during the day and at night respectively; multiple personnel positioning and tracking modules 1 are set up at different locations indoors to take indoor photos from different angles to obtain the three-dimensional position of the personnel.

[0010] The personnel positioning and tracking module 1, the directional heat radiation module 2 and the controller 3 are equipped with communicators, which can transmit data between the modules through data cables or wireless communication.

[0011] The personnel positioning and tracking module 1 transmits indoor photo information to the controller 3. The controller 3 adjusts the rotation angle of the omnidirectional rotation axis 25 according to the position and number of human bodies in the room; the controller 3 adjusts the working voltage of the radiation power controller 24 according to the heating gear set by the user, thereby adjusting the amount of heat radiation.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) Using electric heating film as the infrared radiation source is safer than the high-temperature radiation source or infrared laser used in existing technologies, and there is no risk of scalding or burning;

[0014] (2) A single controller is used to simultaneously realize the data acquisition and control process of all modules. The system is compact and flexible and easy to deploy. When deployed in rooms of different sizes, only the personnel positioning tracking module and the directional heat radiation module array need to be added to complete the room heating coverage, which has strong scalability.

[0015] (3) During the heating process, heat is only radiated to the human body, which has an outstanding energy-saving advantage compared with traditional heating methods; and the heating power of the system can be flexibly adjusted according to the individual preferences of indoor occupants, which can improve heating comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a work flow chart of the utility model system.

[0017] Figure 2 This is a schematic diagram of the structure of the system of the utility model. In the figure, 1 is a personnel positioning and tracking module, 2 is a directional heat radiation module, 3 is a controller, and 4 is a schematic diagram of the directional transmission direction of heat radiation.

[0018] Figure 3 These are three views of the directional thermal radiation module structure, (a) is the main view, (b) is the left view, and (c) is the top view; among them, 21 is the substrate, 22 is the electric heating film layer, 23 is the thermal radiation directional transmission metamaterial coating, 24 is the radiation power controller, and 25 is the omnidirectional rotation axis. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 2 As shown, the present invention is a personnel positioning tracking radiant heating system based on thermal radiation directional transmission metamaterial, which includes a personnel positioning tracking module 1, a directional thermal radiation module 2 and a controller 3.

[0021] The personnel positioning and tracking module 1 is composed of a binocular camera and an infrared camera and has a communication function. The structure of the directional thermal radiation module 2 is as follows: Figure 3As shown, the directional heat radiation module 2 is constructed by laminating and coating a substrate 21, an electrothermal film 22, and a directional heat radiation transmission metamaterial 23 layer by layer. A radiation power controller 24 and an omnidirectional rotation axis 25 are mounted on the back of the substrate 21. The omnidirectional rotation axis 25 allows the directional heat radiation module 2 to rotate within a certain angle in the forward, backward, left, and right directions. A controller 3 reads data from the personnel positioning and tracking module 1 and sends control commands to the directional heat radiation module 2.

[0022] The electric heating film layer 22 can use a graphene electric heating film with adjustable power. The working principle of the carbon-based electric heating film is that when there is a potential difference between its two ends, electrons, under the action of the electric field, cross the low potential barrier and migrate between the closely spaced carbon-based conductive particles. The friction and collision between the electrons and the carbon molecular clusters generate heat energy, which is radiated in the form of infrared rays with an effective radiation wavelength of 7-14μm.

[0023] The infrared radiation directional transmission metamaterial 23 can adopt the PEI / Ge (polyetherimide) multilayer composite material disclosed in the document "Yunbin Ying, Jianbo Yu, Bing Qin, et al. Directional Thermal Emission Covering Two Atmospheric Windows[J]. Laser & Photonics Reviews, 2023, 17(11): 1-8.". The principle of achieving infrared directional transmission in this composite material is Fabry-Perot resonance and Brewster effect. By controlling the thickness of the PT substrate to be close to 1 / 4 of the infrared radiation wavelength, Fabry-Perot resonance can be formed, achieving wavelength-selective reflection / transmission of infrared radiation. Subsequently, the infrared radiation is converted into narrow-angle p-polarized radiation near the Brewster angle by the Brewster effect at the PEI / Ge interface, achieving the directionality of thermal radiation.

[0024] Each module is installed in different locations in the room, such as Figure 2 As shown, two personnel positioning and tracking modules 1 are installed on different walls in the room. A directional heat radiation module 2 is suspended from the ceiling, and multiple directional heat radiation modules are provided to form a directional heat radiation module array.

[0025] The working process of the utility model system is as follows Figure 1As shown. First, the user sets the heating gear in the controller 3. The binocular camera and the infrared camera capture indoor photos at certain time intervals during the day and night respectively and send them to the controller 3 for processing. The controller 3 determines the number of people and their three-dimensional positions in the room based on the image information. Then, according to the heating gear set by the user, a control instruction is generated and sent to the directional heat radiation module 2. After receiving the control instruction, the directional heat radiation module 2 adjusts the angle by the omnidirectional rotating shaft 25. The radiation power controller 24 changes the working voltage of the electric heating film to adjust the radiation power, and concentrates the heat radiation in the microenvironment around the human body for heating. Finally, the changes in the angle and radiation power of the directional heat radiation module are completed, and dynamic tracking heating is realized. The system of the present utility model can enhance the energy saving, flexibility and comfort of building heating to a certain extent.

Claims

1. A tracking radiant heating system based on directional heat transfer metamaterials, characterized in that: The tracking radiation heating system based on directional heat transmission metamaterial comprises a personnel positioning tracking module (1), a directional heat radiation module (2) and a controller (3); the personnel positioning tracking module (1) comprises a binocular camera and an infrared camera; the directional heat radiation module (2) comprises a substrate (21), an electric heating film layer (22), a heat radiation directional transmission metamaterial coating (23), a radiation power controller (24) and an omnidirectional rotation axis (25); the heat radiation directional transmission metamaterial coating (23) is coated on the surface of the electric heating film layer (22), and the electric heating film layer (22) is adhered to the back of the substrate (21) to form a three-layer structure; the omnidirectional rotation The upper end of the shaft (25) is mounted on the ceiling of the room, and the lower end is mounted on the back of the base plate (21), so as to realize the change of the direction and angle of the directional heat radiation module (2); the radiation power controller (24) is mounted on the back of the base plate (21), connected to the electric heating film layer (22), and controls the radiation power of the electric heating film layer (22) by controlling the working voltage, thereby realizing heat control; the personnel positioning and tracking module (1) includes a binocular camera and an infrared camera, which respectively capture indoor photos during the day and at night; the controller (3) is placed indoors, receives data from the personnel positioning and tracking module (1) and the directional heat radiation module (2), and controls the operation of the two.

2. The tracking radiant heating system based on directional heat transfer metamaterial according to claim 1, characterized in that: The personnel positioning and tracking modules (1) are equipped with at least two modules, which are respectively installed on two different walls in the room to capture indoor photos for personnel positioning; the directional heat radiation modules (2) are equipped with several modules to form an array and are suspended on the ceiling of the room.

3. A tracking radiant heating system based on directional heat transfer metamaterial according to claim 1 or 2, characterized in that: Multiple personnel positioning and tracking modules (1) are set up at different locations indoors, and indoor photos are taken from different angles to obtain the three-dimensional position of the personnel.

4. The tracking radiant heating system based on directional heat transfer metamaterial according to claim 1 or 2, characterized in that: The personnel positioning and tracking module (1), the directional heat radiation module (2), and the controller (3) are equipped with a communicator for transmitting data between the modules via a data line or wireless communication.

5. A tracking radiant heating system based on directional heat transfer metamaterial according to claim 1 or 2, characterized in that: The personnel positioning and tracking module (1) transmits indoor photo information to the controller (3), and the controller (3) adjusts the rotation angle of the omnidirectional rotation axis (25) according to the position and number of personnel in the room; the controller (3) adjusts the working voltage of the radiation power controller (24) according to the heating gear set by the user, thereby achieving the adjustment of the heat radiation power.

6. A tracking radiant heating system based on directional heat transfer metamaterial according to claim 1 or 2, characterized in that: The electric heating film layer (22) is a graphene electric heating film with adjustable power.

7. A tracking radiant heating system based on directional heat transfer metamaterial according to claim 1 or 2, characterized in that: The thermal radiation directional transmission metamaterial coating (23) adopts a PEI / Ge multilayer composite material.

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