A multi-radiation surface radiation air conditioning terminal partition control method and system

Abstract

The present invention proposes a terminal zoning control method and system for a multi-radiant surface radiation air-conditioning, the method comprising: obtaining indoor environmental parameters, air-conditioning system parameters, and user parameters, and calculating indoor dew point temperature and thermal comfort; according to the indoor dew point temperature, thermal comfort, and current working mode, regulating the fresh air system, floor radiation system, ceiling radiation system, and wall radiation system in accordance with an environmental pre-adjustment mode and a dynamic response control mode, respectively, until the current indoor thermal comfort satisfies a first thermal comfort range and a second thermal comfort range in turn; after satisfying the second thermal comfort range, according to indoor load changes and the current working mode, regulating the fresh air system, floor radiation system, ceiling radiation system, and wall radiation system in accordance with a load adaptive compensation mode, respectively, to compensate for the changing indoor load, thereby effectively improving the reliability and timeliness of the multi-radiant surface radiation air-conditioning control.

Description

Technical Field

[0001] The present invention relates to the field of radiation air conditioning control, and in particular to a terminal zoning control method and system for radiation air conditioning with multiple radiation surfaces. Background Art

[0002] In recent years, radiant air-conditioning systems have been widely used in high-end buildings due to their weak blowing feeling, low noise and energy saving.

[0003] Traditional radiant air conditioning systems mostly use a single radiant terminal and a separate control architecture for the fresh air system. The main bottlenecks are: the cooling and heat supply of the radiant terminal is limited. The existing system generally adopts a unified water supply strategy for radiant panels, which fails to give full play to the potential of zoning regulation of multi-surface radiant terminals. As shown in the patent with publication number CN115183352A, the typical implementation scheme only arranges a single radiant surface on the floor, and the heat exchange area is limited, resulting in the inability to meet the cooling and heat requirements of large spaces and large loads, and the single radiant surface is difficult to cope with dynamic load changes.

[0004] There have been technical improvements to the existing bottlenecks, but there are still deficiencies. As shown in the patent application number CN118856521A, infrared thermal imagers are arranged indoors, computer vision technology is used to count the number of people indoors, the minimum fresh air volume is calculated, and an infrared transparent material layer and a radiation cooling plate are used to form an anti-condensation radiation cooling device to improve the cooling capacity. PMV is used as a control indicator to improve the control accuracy. However, only the radiation plate is installed on the top plate, the heat exchange area is small, the cooling capacity is limited, and there is a lack of graded regulation. The ability to cope with load changes is insufficient. When compensating for indoor loads, it only relies on a single compensation system, which makes the reliability and timeliness of multi-radiation surface radiation air conditioning control low.

[0005] In order to solve the problems of low reliability and timeliness of multi-radiation surface radiation air conditioning control in the prior art, this solution is proposed. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the present invention innovatively proposes a multi-radiation surface radiation air-conditioning terminal zoning control method and system, which effectively solves the problems of low reliability and timeliness of multi-radiation surface radiation air-conditioning control caused by the prior art, and effectively improves the reliability and timeliness of multi-radiation surface radiation air-conditioning control.

[0007] A first aspect of the present invention provides a multi-radiation surface radiation air conditioning terminal zoning control method, comprising:

[0008] After the radiant air conditioner is started, the indoor environmental parameters, air conditioning system parameters and user parameters are obtained through computer vision and multi-sensor fusion technology, and the indoor dew point temperature and thermal comfort are calculated according to the indoor environmental parameters, air conditioning system parameters and user parameters; the working modes of the radiant air conditioner include: environmental pre-adjustment mode, dynamic response control mode and load adaptive compensation mode; the multi-radiant surfaces include floor radiant surfaces, ceiling radiant surfaces and wall radiant surfaces; the radiant air conditioner includes a fresh air system, a floor radiant system, a ceiling radiant system and a wall radiant system;

[0009] When the radiation air conditioner starts to operate, according to the indoor dew point temperature, thermal comfort, and current working mode, the fresh air system, floor radiation system, ceiling radiation system, and wall radiation system are regulated in accordance with the environmental pre-adjustment mode and the dynamic response control mode, respectively, until the current indoor thermal comfort satisfies the first thermal comfort range and the second thermal comfort range in turn; wherein the current working mode includes the cooling mode and the heating mode, and the first thermal comfort range is greater than the second thermal comfort range;

[0010] After the current indoor thermal comfort meets the second thermal comfort range, the fresh air system, floor radiation system, ceiling radiation system and wall radiation system are adjusted respectively according to the load adaptive compensation mode based on the indoor load changes and the current working mode to compensate for the changing indoor load.

[0011] A second aspect of the present invention provides a multi-radiation surface radiation air conditioning terminal partition control system, comprising:

[0012] The acquisition module acquires indoor environmental parameters, air conditioning system parameters, and user parameters through computer vision and multi-sensor fusion technology after the radiant air conditioner is started, and calculates indoor dew point temperature and thermal comfort according to the indoor environmental parameters, air conditioning system parameters, and user parameters; the working modes of the radiant air conditioner include: environmental pre-adjustment mode, dynamic response control mode, and load adaptive compensation mode; the multi-radiant surfaces include floor radiant surfaces, ceiling radiant surfaces, and wall radiant surfaces; the radiant air conditioner includes a fresh air system, a floor radiant system, a ceiling radiant system, and a wall radiant system;

[0013] The first control module, when the radiation air conditioner starts to operate, controls the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system respectively according to the environmental pre-adjustment mode and the dynamic response control mode according to the indoor dew point temperature, thermal comfort, and the current working mode, until the current indoor thermal comfort satisfies the first thermal comfort range and the second thermal comfort range in sequence; wherein the current working mode includes a cooling mode and a heating mode, and the first thermal comfort range is greater than the second thermal comfort range;

[0014] The second control module controls the fresh air system, floor radiation system, ceiling radiation system and wall radiation system respectively according to the load adaptive compensation mode based on the indoor load changes and the current working mode after the current indoor thermal comfort meets the second thermal comfort range to compensate for the changing indoor load.

[0015] The technical solution adopted by the present invention includes the following technical effects:

[0016] 1. In the technical solution of the present invention, after the radiant air conditioner is started, the indoor environmental parameters, air conditioning system parameters, and user parameters are obtained through computer vision and multi-sensor fusion technology, and the indoor dew point temperature and thermal comfort are calculated according to the indoor environmental parameters, air conditioning system parameters, and user parameters; when the radiant air conditioner starts to run, according to the indoor dew point temperature, thermal comfort, and the current working mode, the fresh air system, the floor radiant system, the ceiling radiant system, and the wall radiant system are regulated respectively according to the environmental pre-adjustment mode and the dynamic response control mode, until the current indoor thermal comfort satisfies the first thermal comfort range and the second thermal comfort range in turn; after the current indoor thermal comfort satisfies the second thermal comfort range, according to the indoor load change and the current working mode, the fresh air system, the floor radiant system, the ceiling radiant system, and the wall radiant system are regulated respectively according to the load adaptive compensation mode to compensate for the changing indoor load, thereby effectively solving the problem of low reliability and timeliness of the control of radiant air conditioners with multiple radiant surfaces caused by the prior art, and effectively improving the reliability and timeliness of the control of radiant air conditioners with multiple radiant surfaces.

[0017] 2. In the technical solution of the present invention, the multiple radiation surfaces include floor radiation surface, ceiling radiation surface, and wall radiation surface; the radiation air conditioner includes a fresh air system, a floor radiation system, a ceiling radiation system, and a wall radiation system, which greatly increases the radiation area, improves the radiation heat exchange amount, and can make the indoor temperature distribution more uniform.

[0018] 3. The ceiling, wall and floor radiation in the radiation system in the technical solution of the present invention respond dynamically according to the working mode. The floor radiation system is operated preferentially in the cooling condition, and the ceiling radiation system is operated preferentially in the heating condition, so as to improve the radiation heat exchange efficiency.

[0019] 4. In the technical solution of the present invention, when the current working mode is cooling mode, the control priority of the compensation system is: fresh air system, ceiling radiation system, wall radiation system, floor radiation system; in heating mode, the control priority of the compensation system is: fresh air system, floor radiation system, wall radiation system, ceiling radiation system; different compensation systems can be flexibly selected according to the working mode; at the same time, abnormal area diagnosis can be performed, and other systems can be used for compensation to quickly respond to load changes in abnormal areas.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of a process of a method in Example 1 of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of an air conditioning system in a method of Example 1 of the present invention;

[0024] Figure 3 This is a schematic flow chart of the environment pre-adjustment mode in step S2 of the method of embodiment 1 of the present invention in the cooling condition (cooling mode);

[0025] Figure 4 This is a schematic flow chart of the dynamic response control mode in step S2 of the method of embodiment 1 of the present invention in the cooling condition;

[0026] Figure 5 This is a schematic diagram of the load adaptive compensation mode flow in step S3 of the method of embodiment 1 in the solution of the present invention in the cooling condition;

[0027] Figure 6 This is a schematic diagram of the personnel load estimation in step S3 of the method in embodiment 1 of the present invention;

[0028] Figure 7 This is a schematic flow chart of the environment pre-adjustment mode in step S2 of the method of embodiment 1 of the present invention in the heating condition (heating mode);

[0029] Figure 8 This is a schematic flow chart of the dynamic response control mode in step S2 of the method of embodiment 1 in the scheme of the present invention under heating conditions;

[0030] Fig. 9 This is a schematic diagram of the load adaptive compensation mode flow in step S3 of the method of embodiment 1 in the solution of the present invention in the heating condition;

[0031] Fig.10 It is a schematic diagram of the structure of the system of Example 2 in the solution of the present invention.

[0032] Figure 2Figure legend: fresh air unit 101, ceiling radiation panel 102, floor radiation panel 103, wall radiation panel 1 104, wall radiation panel 2 105, thermal imager and visible light camera 106, radiation system water supply thermometer 201, radiation system water supply valve 202, radiation system return water thermometer 203, radiation system return water flowmeter 204, fresh air system water supply thermometer 211, fresh air system water supply flowmeter 212, fresh air system water supply valve 213, fresh air system return water thermometer 214, floor water supply thermometer 221, floor radiation water supply flowmeter 222, floor radiation water supply valve 223, floor return water thermometer 224, ceiling water supply thermometer 231, ceiling radiation water supply flowmeter 232, ceiling radiation water supply Water valve 233, ceiling return water thermometer 234, wall radiation water supply valve 241, wall radiation water supply flowmeter 242, wall water supply thermometer 243, wall return water thermometer 244, radiation system water supply pipeline 301, radiation system return water pipeline 302, fresh air system water supply pipeline 303, fresh air system return water pipeline 304, floor radiation water supply pipeline 305, floor radiation return water pipeline 306, ceiling radiation water supply pipeline 307, ceiling radiation return water pipeline 308, wall radiation panel water supply pipeline 309, wall radiation panel return water pipeline 310, fresh air system water supply pump 311, radiation system water supply pump 312, wall radiation mixing water pump 321, ceiling radiation water supply pump 322, floor radiation mixing water pump 323. DETAILED DESCRIPTION

[0033] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings. The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. The present invention omits the description of known components and processing techniques and processes to avoid unnecessary limitations on the present invention.

[0034] Embodiment 1

[0035] like Figure 1 As shown, the present invention provides a multi-radiation surface radiation air conditioning terminal zoning control method, comprising:

[0036] S1, after the radiant air conditioner is started, the indoor environmental parameters, air conditioning system parameters, and user parameters are obtained through computer vision and multi-sensor fusion technology, and the indoor dew point temperature and thermal comfort are calculated according to the indoor environmental parameters, air conditioning system parameters, and user parameters; the working modes of the radiant air conditioner include: environmental pre-adjustment mode, dynamic response control mode, and load adaptive compensation mode; the multi-radiant surface includes a floor radiant surface, a ceiling radiant surface, and a wall radiant surface; the radiant air conditioner includes a fresh air system, a floor radiant system, a ceiling radiant system, and a wall radiant system;

[0037] S2, when the radiation air conditioner starts to operate, according to the indoor dew point temperature, thermal comfort, and current working mode, the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system are regulated in accordance with the environmental pre-adjustment mode and the dynamic response control mode, respectively, until the current indoor thermal comfort satisfies the first thermal comfort range and the second thermal comfort range in turn; wherein the current working mode includes the cooling mode and the heating mode, and the first thermal comfort range is greater than the second thermal comfort range;

[0038] S3, after the current indoor thermal comfort meets the second thermal comfort range, the fresh air system, floor radiation system, ceiling radiation system and wall radiation system are adjusted respectively according to the load adaptive compensation mode based on the indoor load changes and the current working mode to compensate for the changing indoor load.

[0039] It should be noted that, in this solution, the floor radiation system includes: a floor radiation panel 103 installed under the floor, a floor radiation water supply pipeline 305, a floor radiation water return pipeline 306, a floor radiation water supply flow meter 222, a floor radiation water supply valve 223, a floor water supply thermometer 221, a floor water return thermometer 224, and a floor radiation water mixing pump 323. The wall radiation system includes: a plurality of wall radiation panels (104 and 105) installed on a plurality of walls, a wall radiation panel water supply pipeline 309, a wall radiation panel water return pipeline 310, a wall radiation water supply flow meter 242, a wall radiation water supply valve 241, a wall water supply thermometer 243, a wall water return thermometer 244, and a wall radiation water mixing pump 321. The ceiling radiation system includes: a ceiling radiation panel 102 installed under the ceiling, a ceiling radiation water supply pipeline 307, a ceiling radiation water return pipeline 308, a ceiling radiation water supply flowmeter 232, a ceiling radiation water supply valve 233, a ceiling water supply thermometer 231, a ceiling water return thermometer 234, and a ceiling radiation water mixing pump 322. The radiation air conditioner also includes a radiation system main pipeline, which includes: a radiation system water supply pipeline 301, a radiation system water return pipeline 302, a radiation system water supply valve 202, a radiation system water supply pump 312, a radiation system water supply thermometer 201, a radiation system water return thermometer 203, and a radiation system water return flowmeter 204. The fresh air system is installed on the top plate, and includes: a fresh air unit 101, a fresh air system water supply thermometer 211, a fresh air system water supply flowmeter 212, a fresh air system water supply valve 213, a fresh air system return water thermometer 214, a fresh air system water supply pipeline 303, a fresh air system return water pipeline 304, and a fresh air system water supply pump 311. In addition, the radiation air conditioning system also includes a thermal imager and a visible light camera 106.

[0040] The multi-surface radiation air conditioning system is divided into cooling and heating modes. When operating in cooling mode, the radiation system water supply temperature can be adjusted from 19 to 23°C, and the fresh air system water supply temperature is 7°C. When operating in heating mode, the radiation system water supply temperature can be adjusted from 28 to 32°C, and the fresh air system water supply temperature is 45°C.

[0041] More specifically, variable frequency water pumps can be used for the water supply pumps of the radiation system and the fresh air system. The computer vision system includes: multi-camera thermal imagers, visible light cameras, and computers. The purpose of laying the radiation system is to minimize the response time. Specifically, the top plate uses a radiation ceiling plate, that is, the radiation plate is directly exposed to the room; the wall radiation system lays the radiation plate on the wall surface; the floor radiation system embeds the radiation plate in the leveling layer, under the surface layer.

[0042] Among them, in step S1, the indoor environment parameters, air conditioning system parameters, and user parameters are obtained by computer vision and multi-sensor fusion technology, specifically including:

[0043] S11, fixing a thermal imager and a visible light camera on the same bracket so that the field of view of the thermal imager and the visible light camera overlap; taking pictures of a certain area in each working mode of the room at the same time by using the thermal imager and the visible light camera respectively; the area is an area including a radiation surface or a human body surface;

[0044] Match the same areas in multiple thermal imager photos (thermal imaging images) and visible light camera photos (visible light images), combine the data of each pixel of the thermal imager photos and the visible light camera photos, and use the trained computer vision model to identify the floor radiation area, wall radiation area, ceiling radiation area, human body radiation area, and other radiation areas. Specifically, alignment of the pictures first requires hardware alignment. During the installation phase, fix the thermal imager and the visible light camera on the same bracket, and make the field of view of the two basically overlap through rotation and translation.

[0045] S12, fusing the data of each pixel in the same area of ​​the thermal imager photo and the visible light camera photo, using the trained computer vision model to identify the fused photos of the radiation surface and the fused photos of the human body surface under various working conditions, and respectively identify the floor radiation area, the wall radiation area, the ceiling radiation area, and the human body radiation area; identifying the high temperature area and the low temperature area through the thermal imager photo; wherein the high temperature area refers to the area in the thermal imager photo that is higher than the first preset temperature threshold, and the low temperature area refers to the area in the thermal imager photo that is lower than the second preset temperature threshold; wherein the first preset temperature threshold is greater than the second preset temperature threshold;

[0046] The field of view of the thermal imager and the visible light camera basically overlap, and then feature matching is performed. Feature point markers are prepared indoors in advance. After the thermal imager and the visible light camera take a photo at the same time, the feature points in the two images are extracted, and the SIFT algorithm is used for feature matching to determine the corresponding relationship. The thermal image is mapped to the coordinate system of the visible light image through affine transformation to eliminate the perspective difference. In particular, high temperature areas and low temperature areas are identified through thermal imager photos. Specifically, the high temperature area refers to the area above 45°C in the thermal imager photo, and the low temperature area refers to the area below 15°C in the thermal imager photo. Specifically, first, collect photos of the thermal imager and the visible light camera simultaneously; because the camera position will not change after being fixed, manually align the thermal imager and the visible light camera in advance, and perform data fusion. The pixels of the thermal imaging image correspond to the pixels of the visible light image, and the fused data includes temperature information and color information; prepare labeled fused image data sets in advance, including fused photos of the radiation surface under various working conditions and fused photos of the human body surface, and train the computer vision model; set temperature thresholds, and define the high temperature area as above 45°C and the low temperature area as below 15°C. The high temperature area and the low temperature area are directly divided through the thermal imager photos; input the thermal imager photos and fused photos into the trained computer vision model to divide the areas in real time.

[0047] More specifically, the temperature value (x, y, T) of each pixel of the thermal imaging image is bound to the RGB value (x, y, R, G, B) of the corresponding pixel of the visible light image to generate fused data (x, y, R, G, B, T).

[0048] S13, using a temperature and humidity sensor to obtain indoor temperature and humidity, and using a black ball thermometer to obtain indoor radiation temperature;

[0049] S14, obtaining setting parameters of water supply flow meters, water supply thermometers, and return water thermometers in different radiation systems;

[0050] Preferably, the parameters of each valve, mixing pump and water supply pump of the air-conditioning system can also be obtained, specifically including: floor radiation water supply flowmeter 222, floor radiation water supply valve 223, floor water supply thermometer 221, floor return water thermometer 224, floor radiation mixing water pump 323, wall radiation water supply flowmeter 242, wall radiation water supply valve 241, wall water supply thermometer 243, wall return water thermometer 244, wall radiation mixing water pump 321, ceiling radiation water supply flowmeter 232, ceiling radiation water supply valve 233, ceiling water supply thermometer 231, ceiling return water thermometer 234, ceiling radiation mixing water pump 322, radiation system water supply valve 202, radiation system water supply pump 312, radiation system water supply thermometer 201, radiation system return water thermometer 203, radiation system return water flowmeter 204.

[0051] S15, collecting user information through a human-computer interaction display screen set up indoors; the user information includes: indoor clothing, indoor occupant gender, indoor occupant age range, and indoor occupant metabolic rate.

[0052] After obtaining indoor environmental parameters, air conditioning system parameters and user parameters through multi-sensor fusion technology, the indoor dew point temperature and thermal comfort can be calculated. The calculation method of the indoor dew point temperature can be an existing calculation method, and this scheme does not limit it here, as long as the indoor dew point temperature can be obtained; the calculation of thermal comfort PMV can refer to the ASHRAE55-2017 standard formula and be calculated according to indoor environmental parameters, air conditioning system parameters and user parameters. This scheme does not limit the specific calculation process here.

[0053] In order to more clearly illustrate the situations of steps S2 and S3 in two different working modes in this solution, they are now explained separately.

[0054] like Figure 3 As shown, step S2 specifically includes:

[0055] When the current working mode is cooling mode, the indoor dew point temperature (T L ) is less than the third preset temperature threshold (20°C), if not less than, control or maintain the fresh air system at high air volume (air volume greater than the preset air volume threshold) to enter the next control cycle; if less than, determine whether the thermal comfort is less than the first preset thermal comfort threshold (i.e. 2), if not less than, control or maintain the fresh air system at high air volume, respectively start the floor radiation system, ceiling radiation system, wall radiation system or maintain the floor radiation system, ceiling radiation system, wall radiation system in operation, and enter the next control cycle; if less than, enter the dynamic response control mode; wherein the first preset thermal comfort threshold is the maximum value of the first thermal comfort range;

[0056] like Figure 4As shown, in the dynamic response regulation mode, the fresh air system of the current regulation cycle is reduced to the minimum fresh air volume, and it is judged whether the thermal comfort in the next regulation cycle is less than the second preset thermal comfort threshold. If it is less, enter the load adaptive compensation mode; if it is not less, then it is judged whether the thermal comfort in the adjacent regulation cycle has decreased. If it has not decreased, according to the number of regulation cycles, in turn, in the adjustment execution order of the fresh air system, the floor radiant system, the wall radiant system, and the ceiling radiant system, increase the cooling capacity in steps of 1°C and enter the next regulation cycle; if it has decreased, according to the number of regulation cycles and the adjustment execution order of the floor radiant system, the wall radiant system, and the ceiling radiant system, successively increase the water supply temperature of the floor radiant system to the fourth preset temperature threshold (21°C), turn off the floor radiant system, increase the water supply temperature of the wall radiant system to the fourth preset temperature threshold, turn off the wall radiant system, increase the water supply temperature of the ceiling radiant system to the fourth preset temperature threshold, increase the water supply temperature of the ceiling radiant system to the fifth preset temperature threshold (23°C), and enter the next regulation cycle until the thermal comfort in this regulation cycle is less than the second preset thermal comfort threshold; where the second preset thermal comfort threshold is the maximum value of the second thermal comfort range, and the first preset temperature threshold, the fifth preset temperature threshold, the fourth preset temperature threshold, the third preset temperature threshold, and the second preset temperature threshold decrease in turn.

[0057] The radiant system and the fresh air system start to operate and are regulated according to the environmental pre-adjustment mode until the preliminary environmental requirements are met. The environmental pre-adjustment mode operates when the system starts and is used to quickly process the indoor thermal environment and adjust it to the preliminary thermal comfort (-2 < PMV < 2 in the first thermal comfort range); the dynamic response regulation mode is used to quickly improve the indoor environment from the thermal environment initially created by the environmental pre-adjustment mode to the comfortable range of -0.5 to 0.5 of PMV (the second thermal comfort range -0.5 < PMV < 0.5). The load adaptive compensation mode is used to maintain the comfortable thermal environment created by the dynamic response regulation mode. When dealing with load changes caused by personnel flow, high temperature, and low temperature areas, the fresh air volume of the fresh air system is preferentially adjusted, and the cooling capacity and heating capacity are quickly adjusted.

[0058] Furthermore, in the summer cooling condition, when the environmental pre-conditioning mode is running, the system estimates the thermal resistance of clothing through the user input of clothing in the indoor controller, collects indoor humidity, indoor temperature, and indoor average radiation temperature through multi-sensor fusion technology, calculates the PMV value and indoor dew point temperature, and evaluates whether the dew point temperature is lower than 20°C. If it is higher than 20°C, the water supply valve of the fresh air system is opened, the water supply pump of the fresh air system is turned on, and the fresh air system is operated at a high air volume. By introducing processed dry fresh air, the indoor humidity is quickly reduced to prevent condensation on the radiation surface. After the dew point temperature is lower than 20°C, the radiation system starts to operate at the same time as the fresh air system is running at a high air volume. The water supply temperature of the radiation system is set to 19°C, the floor radiation system, the ceiling radiation system, and the wall radiation system are turned on, and the radiation system water supply pump and the radiation system water supply valve are opened. When the PMV drops to 2, the environmental pre-conditioning mode stops and enters the dynamic response control mode.

[0059] Specifically, the dynamic response control mode under the cooling mode (cooling mode or cooling condition or cooling condition) is as follows: Figure 4 As shown, the fresh air system of the current control cycle is reduced to the minimum fresh air volume, and it is determined whether the thermal comfort of the next control cycle is less than the second preset thermal comfort threshold (i.e. 0.5). If it is less than, enter the load adaptive compensation mode; if it is not less than, it is determined whether the thermal comfort of the adjacent control cycle decreases (PMV t -PMV t-1 <0), if it does not decrease, it means that the thermal environment is initially balanced and the cooling capacity is low, the air supply of the fresh air system is increased, the cooling capacity is increased in steps of 1°C, and the next regulation cycle is entered; if it decreases, the floor radiation system water supply temperature is increased to the fourth preset temperature threshold (21°C) by controlling the floor radiation system mixing pump and the next regulation cycle is entered; wherein, the second preset thermal comfort threshold (0.5) is the maximum value of the second thermal comfort range;

[0060] Determine whether the thermal comfort level in the next control cycle is less than the second preset thermal comfort level threshold. If so, enter the load adaptive compensation mode. If not, determine whether the thermal comfort level in the adjacent control cycle decreases. If not, it means that the thermal environment is initially balanced and the cooling capacity is low. Reduce the water supply temperature of the floor radiation system, increase the cooling capacity slightly in steps of 1°C, and enter the next control cycle. If it decreases, turn off the floor radiation system, increase the water supply temperature of the wall radiation system to the fourth preset temperature threshold, and enter the next control cycle.

[0061] Determine whether the thermal comfort level in the next control cycle is less than the second preset thermal comfort level threshold. If so, enter the load adaptive compensation mode. If not, determine whether the thermal comfort level in the adjacent control cycle decreases. If not, it means that the thermal environment is initially balanced and the cooling capacity is low. Reduce the water supply temperature of the wall radiation system or turn on the mixing pump of the floor radiation system. Increase the cooling capacity in small increments of 1°C and enter the next control cycle. If it decreases, turn off the wall radiation system, increase the water supply temperature of the ceiling radiation system to the fourth preset temperature threshold and enter the next control cycle.

[0062] It is determined whether the thermal comfort level in the next control cycle is less than the second preset thermal comfort level threshold. If so, the load adaptive compensation mode is entered. If not, it is determined whether the thermal comfort level in the adjacent control cycle decreases. If not, it indicates that the thermal environment is initially balanced and the cooling capacity is low. The water supply temperature of the ceiling radiation system is reduced or the mixing water pump of the wall radiation system is turned on. The cooling capacity is increased slightly in steps of 1°C to enter the next control cycle. If it decreases, the water supply temperature of the ceiling radiation system is increased to the fifth preset temperature threshold (23°C) and the next control cycle is entered until the thermal comfort level in the control cycle is less than the second preset thermal comfort threshold. Otherwise, the water supply temperature of the ceiling radiation system is reduced. The cooling capacity is increased slightly in steps of 1°C to enter the next control cycle. Among them, the first preset temperature threshold (45°C), the fifth preset temperature threshold (23°C), the fourth preset temperature threshold (21°C), the third preset temperature threshold (20°C), and the second preset temperature threshold (15°C) decrease in sequence.

[0063] It is worth noting that in the rapid response stage of cooling conditions, in order to prevent condensation on the radiant surface, the fresh air system has compulsory control measures, that is, when the indoor dew point temperature is higher than 20°C, the fresh air volume is forced to increase and the dew point temperature is lowered.

[0064] like Figure 5 As shown, in the cooling mode, step S3 specifically includes:

[0065] S301, when the current working mode is a cooling mode and the current indoor thermal comfort meets a second thermal comfort range, identifying indoor cooling load changes, wherein the indoor cooling load changes include heat dissipated by a high temperature area or absorbed by a low temperature area, and changes in personnel load;

[0066] Specifically, the high temperature area and the low temperature area identified and divided in S11 are obtained, and the area of ​​the high temperature area or the low temperature area (the actual area of ​​the indoor high temperature area and the low temperature area) is obtained. For example, the perspective relationship in the picture and the scale of the picture pixels and length can be determined in advance, and then the area of ​​the area in the picture and the corresponding actual area can be calculated.

[0067] Calculate the amount of heat dissipated by a high temperature area or absorbed by a low temperature area:

[0068] ,

[0069] In the formula, is the heat dissipated by the high temperature area, or the heat absorbed by the low temperature area, W; h is the convective heat transfer coefficient, which can be specified as needed, and is set to 25W / (m²·K) here; A is the area of ​​the high temperature or low temperature area, m 2 ; T b The average temperature of the high or low temperature area (using the average temperature data of thermal imaging images taken by multiple cameras), ℃; T a is the average indoor surface temperature (the average temperature data from thermal imaging images taken from multiple camera positions is used to calculate the average temperature), ℃.

[0070] Computer vision technology is used to establish a human detection model to identify human bodies in thermal imaging videos. The indoor human load calculation formula is:

[0071] ,

[0072] Among them, Q p is the personnel load; Q z is the estimated heat load of the zth group of people; n z is the number of the zth group of people; g is the total number of people; the groups include male teenagers, male youths, male middle-aged, male elders, female teenagers, female youths, female middle-aged, and female elders. The specific heat dissipation of each person is referred to Figure 6 .

[0073] Finally determine the cooling capacity change value (Indoor cooling load variation).

[0074] ,

[0075] In the formula, is the change in cooling capacity, W; Q s The heat dissipated by the high temperature area or the heat absorbed by the low temperature area, W; Q p is the indoor personnel load, W.

[0076] S302, the fresh air or radiation system being regulated is used as a compensation system for load changes, and the control priority of the compensation system is: fresh air system, ceiling radiation system, wall radiation system, floor radiation system;

[0077] Since the cooling system has priority, the systems that are controlled in order to increase the cooling capacity are: fresh air system, ceiling radiation system, wall radiation system, and floor radiation system. Therefore, there is only one system being regulated in the same control cycle, and it is regarded as the system that bears the load changes. Therefore, there is only one system being regulated in the same control cycle, and it is regarded as the system that bears the load changes.

[0078] S303, if the current compensation system is a fresh air system, if the indoor cooling load change is less than zero, then reduce the fresh air volume; if the indoor cooling load change is greater than zero, then turn on the ceiling radiation system to increase the cooling capacity;

[0079] S304, if the current compensation system is the ceiling radiation system, if the indoor cooling load change is less than zero, then the ceiling radiation system water supply temperature is increased or the ceiling radiation system is turned off to reduce the cooling capacity; if the indoor cooling load change is greater than zero, then the ceiling radiation system water supply temperature is reduced or the floor radiation system is turned on to increase the cooling capacity;

[0080] S305, if the current compensation system is a wall radiation system, if the indoor cooling load change is less than zero, then the wall radiation system water supply temperature is increased or the wall radiation system is turned off to reduce the cooling capacity; if the indoor cooling load change is greater than zero, then the wall radiation system water supply temperature is reduced or the floor radiation system is turned on to increase the cooling capacity;

[0081] S306, if the current load change bearing system is a floor radiation system, if the indoor cooling load change is less than zero, then the floor radiation system water supply temperature is increased or the floor radiation system is turned off to reduce the cooling capacity; if the indoor cooling load change is greater than zero, then the floor radiation system water supply temperature is reduced or the fresh air volume is increased to increase the cooling capacity;

[0082] S307, determining whether the current thermal comfort level is within the second thermal comfort level range, if not, re-determining the indoor cooling load change; if yes, the indoor room reaches a comfortable state and continues to maintain it.

[0083] Furthermore, in the load adaptive compensation mode in the cooling mode, step S3 specifically includes:

[0084] S308, using a computer vision model to perform abnormal diagnosis on the floor radiation area, the wall radiation area, and the ceiling radiation area, and finding the temperature abnormal area according to the average temperature of each area; wherein the identification of the temperature abnormal area is specifically: comparing the temperature of the same area in the thermal imaging images of multiple viewing angles, if there is a viewing angle that meets the characteristics of the radiation area and the temperature difference with the same radiation area is less than a preset temperature difference threshold, then the area is judged to be normal; otherwise, the area is judged to be a temperature abnormal area;

[0085] Specifically, computer vision can be used for abnormal diagnosis, and other systems can be used for collaborative compensation. The GUI interface is divided into areas: floor radiation area, wall radiation area, and ceiling radiation area. The average temperature of each area is calculated, and the temperature abnormal area is found through multiple perspectives. The temperature abnormal area is divided into the shielding area and the fault area.

[0086] Among them, the identification of the blocked area is carried out by shooting with thermal imagers at multiple viewing angles, and the temperature of the same area in the thermal imaging images of multiple viewing angles is compared. If there is a viewing angle that meets the radiation surface characteristics and is similar to the surface temperature of the same radiation system, the area is judged to be normal; otherwise, it is judged to be abnormal, that is, blocked or faulty.

[0087] Determine the abnormal radiation system based on the current abnormal area, diagnose the data of the supply and return water thermometer and supply and return water flow meter of the abnormal radiation system, and issue a fault alarm if an abnormality exists; if it is normal, diagnose it as obstruction.

[0088] Determine the abnormal radiation system according to the current abnormal area, diagnose the data of the supply and return water thermometer and supply and return water flowmeter of the abnormal radiation system, and issue a fault alarm if there is an abnormality, and diagnose it as obstruction if it is normal. Determine the abnormal phenomenon as obstruction or blockage, and issue a corresponding alarm. Specifically, use a neural network algorithm to diagnose the abnormal phenomenon. First, collect historical data and train the neural network model. The historical data includes: the supply and return water temperature and flow data when the radiation system is operating normally; the supply and return water temperature and flow data when obstruction occurs; the supply and return water temperature and flow data when obstruction occurs. The input layer is the supply and return water temperature and flow, and the output layer is normal, obstruction, and obstruction.

[0089] S309, calculate the cooling capacity loss caused by the current temperature abnormal area, adjust the air volume of the fresh air system within the first preset time period, compensate for the cooling load change caused by the cooling capacity loss caused by the current temperature abnormal area, and if it exceeds the first preset time period (5 minutes), the cooling capacity loss caused by the current temperature abnormal area will be included in the indoor cooling load change.

[0090] When the temperature abnormal area appears, calculate the cooling capacity loss caused by the current abnormal surface, adjust the air volume of the fresh air system within 5 minutes to compensate for the load change. If it exceeds 5 minutes, it will be included in the cooling capacity change value Q l .

[0091] Specifically, calculate the cooling loss caused by the abnormal surface:

[0092] ,

[0093] In the formula, Q y is the cooling loss caused by the abnormal surface, W; h is the convection heat transfer coefficient, which can be specified according to needs, and is set to 25W / (m²·K) here; A y is the abnormal area, m 2 ; T d is the average temperature of the abnormal area, °C; T c is the average temperature of other areas in the same system, ℃.

[0094] Specifically, within 5 minutes of the occurrence of an abnormal situation, the fresh air system will be used to compensate, that is, the fresh air volume will be increased to make up for the loss of cooling capacity.

[0095] Specifically, 5 minutes later, Q s Count into Q l , cooling capacity change value Q l The formula is:

[0096] ,

[0097] In the formula, Q l is the change in cooling capacity, W; Q s The heat dissipated by the high temperature area or the heat absorbed by the low temperature area, W; Q p is the indoor personnel load, W; Q y is the heat loss caused by the abnormal surface, W.

[0098] The following is an explanation of steps S2 and S3 in the heating mode. Figure 7 As shown, step S2 specifically includes:

[0099] When the current working mode is the heating mode, according to the environmental pre-adjustment mode (the same as the environmental pre-processing mode), it is determined whether the thermal comfort is greater than the third preset thermal comfort threshold. If not, the fresh air system is controlled or maintained to operate at a high air volume, and the floor radiation system, the ceiling radiation system, and the wall radiation system are respectively started or the floor radiation system, the ceiling radiation system, and the wall radiation system are maintained in operation, and the next control cycle is entered; if greater, the dynamic response control mode is entered; wherein the third preset thermal comfort threshold (-2) is the minimum value of the first thermal comfort range;

[0100] like Figure 8As shown, in the dynamic response control mode in the heating mode, the fresh air system in the current control cycle is reduced to the minimum fresh air volume, and it is judged whether the thermal comfort level in the next control cycle is greater than the fourth preset thermal comfort threshold (-0.5). If it is, it enters the load adaptive compensation mode; if it is not, it is judged whether the thermal comfort level in the adjacent control cycle increases. If it does not increase, according to the number of control cycles, the adjustment execution order of the fresh air system, the ceiling radiation system, the wall radiation system, and the floor radiation system is followed in turn, and the heating supply is increased in steps of 1°C to enter the next control cycle; if it increases, according to the number of control cycles and the ceiling radiation system, the heating supply is increased in steps of 1°C. The regulation execution order of the system, wall radiation system, and floor radiation system is to reduce the water supply temperature of the ceiling radiation system to the sixth preset temperature threshold (30°C), turn off the ceiling radiation system, reduce the water supply temperature of the wall radiation system to the sixth preset temperature threshold, turn off the wall panel radiation system, reduce the water supply temperature of the floor radiation system to the sixth preset temperature threshold, reduce the water supply temperature of the floor radiation system to the seventh preset temperature threshold (28°C), and enter the next regulation cycle until the thermal comfort level of the regulation cycle is less than the fourth preset thermal comfort threshold; wherein the fourth preset thermal comfort threshold is the minimum value of the second thermal comfort range.

[0101] In winter heating conditions, when the environmental pre-adjustment mode is running, the system estimates the thermal resistance of clothing through the user's input of clothing in the indoor controller, collects indoor humidity, indoor temperature, and indoor average radiation temperature through multi-sensor fusion technology, and calculates the PMV value. If it is higher than -2, the fresh air system water supply valve is opened, the fresh air system water supply pump is turned on, and the fresh air system operates at high air volume. The radiation system water supply valve is opened, the floor radiation system water supply valve is opened, and the floor radiation system mixing water pump sets the water supply temperature to 32°C. The wall radiation system water supply valve is opened, and the wall radiation system mixing water pump sets the water supply temperature to 32°C. The ceiling radiation system water supply valve is opened, and the ceiling radiation system mixing water pump sets the water supply temperature to 32°C, and the radiation system water supply pump is turned on; if so, the environmental pre-adjustment mode stops and enters the dynamic response control mode.

[0102] Specifically, the dynamic response control mode under the heating mode (heating mode or heating condition or heating condition) is as follows: Figure 8 As shown, in the dynamic response control mode, the fresh air system of the current control cycle is reduced to the minimum fresh air volume, and it is judged whether the thermal comfort of the next control cycle is greater than the fourth preset thermal comfort threshold. If it is greater, the load adaptive compensation mode is entered; if it is not greater, it is judged whether the thermal comfort of the adjacent control cycle increases (PMV t -PMV t-1>0), if it does not rise, it means that the thermal environment is initially balanced and the heating supply is low. Increase the air supply of the fresh air system and increase the heating supply in steps of 1°C to enter the next regulation cycle; if it rises, reduce the water supply temperature of the ceiling radiation system to the sixth preset temperature threshold (30°C) and enter the next regulation cycle; among which, the fourth preset thermal comfort threshold (-0.5) is the minimum value of the second thermal comfort range;

[0103] Determine whether the thermal comfort level in the next control cycle is greater than the fourth preset thermal comfort level threshold. If so, enter the load adaptive compensation mode. If not, determine whether the thermal comfort level in the adjacent control cycle increases. If not, it means that the thermal environment is initially balanced and the heat supply is low. Increase the water supply temperature of the ceiling radiation system, increase the heat supply in small increments of 1°C, and enter the next control cycle. If it increases, turn off the ceiling radiation system, reduce the water supply temperature of the wall radiation system to the sixth preset temperature threshold, and enter the next control cycle.

[0104] Determine whether the thermal comfort level in the next control cycle is greater than the fourth preset thermal comfort level threshold. If so, enter the load adaptive compensation mode. If not, determine whether the thermal comfort level in the adjacent control cycle increases. If not, it means that the thermal environment is initially balanced and the heat supply is low. Increase the water supply temperature of the wall radiation system, increase the heat supply in small increments of 1°C, and enter the next control cycle. If it increases, turn off the wall radiation system, reduce the water supply temperature of the floor radiation system to the sixth preset temperature threshold, and enter the next control cycle.

[0105] It is determined whether the thermal comfort level in the next control cycle is greater than the fourth preset thermal comfort level threshold. If so, the load adaptive compensation mode is entered. If not, it is determined whether the thermal comfort level in the adjacent control cycle increases. If not, it indicates that the thermal environment is initially balanced and the heating supply is low. The water supply temperature of the floor radiation system is increased, and the heating supply is slightly increased by 1°C in steps of 1°C to enter the next control cycle. If it increases, the water supply temperature of the floor radiation system is reduced to the seventh preset temperature threshold (28°C) and the next control cycle is entered until the thermal comfort level in the control cycle is less than the fourth preset thermal comfort level threshold. Otherwise, the water supply temperature of the floor radiation system is increased, and the heating supply is slightly increased by 1°C in steps of 1°C to enter the next control cycle. The first preset temperature threshold (45°C), the sixth preset temperature threshold (30°C), the seventh preset temperature threshold (28°C), the fifth preset temperature threshold (23°C), the fourth preset temperature threshold (21°C), the third preset temperature threshold (20°C), and the second preset temperature threshold (15°C) decrease in sequence.

[0106] like Fig. 9 As shown, in the heating mode, step S3 specifically includes:

[0107] S311, when the current working mode is the heating mode and the current indoor thermal comfort meets the second thermal comfort range, identifying the indoor heat load change, wherein the indoor heat load change includes the heat dissipated or absorbed by the high temperature area, or the heat dissipated or absorbed by the low temperature area, and the personnel load change;

[0108] Specifically, the indoor heat load changes Q r (Heat supply change value Q r ) includes the heat dissipated by the high temperature area or the heat absorbed by the low temperature area, and the calculation and acquisition method of the personnel load change is the same as the calculation and acquisition method when the indoor cooling load changes, and this embodiment does not limit this.

[0109] S312, the fresh air or radiation system being regulated is used as a compensation system for load changes, and the control priority of the compensation system is: fresh air system, floor radiation system, wall radiation system, and ceiling radiation system;

[0110] S313, if the current compensation system is a fresh air system, if the indoor heat load change is less than zero, then reduce the fresh air volume; if the indoor heat load change is greater than zero, then turn on the floor radiation system to increase the heating supply;

[0111] S314, if the current compensation system is a floor radiation system, if the indoor heat load change is less than zero, then the water supply temperature of the floor radiation system is reduced or the floor radiation system is turned off to reduce the heat supply; if the indoor heat load change is greater than zero, then the water supply temperature of the floor radiation system is increased or the wall radiation system is turned on to increase the heat supply;

[0112] S315, if the current compensation system is the wall radiation system, if the indoor heat load change is less than zero, then the wall radiation system water supply temperature is reduced or the wall radiation system is turned off to reduce the heat supply; if the indoor heat load change is greater than zero, then the wall radiation system water supply temperature is increased or the ceiling radiation system is turned on to increase the heat supply;

[0113] S316, if the current load change bearing system is the ceiling radiation system, if the indoor heat load change is less than zero, then reduce the ceiling radiation system water supply temperature or shut down the ceiling radiation system to reduce the cooling capacity; if the indoor heat load change is greater than zero, then increase the ceiling radiation system water supply temperature or increase the fresh air volume to increase the heating capacity;

[0114] S317, determining whether the current thermal comfort level is within the second thermal comfort level range, if not, re-determining the indoor heat load change; if yes, the indoor room reaches a comfortable state and continues to maintain it.

[0115] Furthermore, in the load adaptive compensation mode in the heating mode, step S3 specifically includes:

[0116] S318, using a computer vision model to perform abnormal diagnosis on the floor radiation area, the wall radiation area, and the ceiling radiation area, and finding the temperature abnormal area according to the average temperature of each area; wherein the identification of the temperature abnormal area is specifically: comparing the temperature of the same area in the thermal imaging images of multiple viewing angles, if there is a viewing angle that meets the characteristics of the radiation area and the temperature difference with the same radiation area is less than a preset temperature difference threshold, then the area is judged to be normal; otherwise, the area is judged to be a temperature abnormal area;

[0117] The division, identification, judgment, and classification of abnormal temperature areas in the heating mode are the same as those in the cooling mode, and are not described in detail in this embodiment.

[0118] S319, calculate the heat loss caused by the current temperature abnormality area (heat change value Q r ), the air volume of the fresh air system is adjusted within the first preset time period to compensate for the load change caused by the heat loss caused by the current temperature abnormal area. If it exceeds the first preset time period (5 minutes), the heat loss caused by the current temperature abnormal area will be included in the indoor heat load change.

[0119] The calculation, compensation, and accounting of heat supply loss in the temperature abnormality area in the heating mode are the same as those in the temperature abnormality area in the cooling mode, and are not described in detail in this embodiment.

[0120] To summarize, the load adaptive compensation mode is used to maintain the comfortable thermal environment created by the dynamic response control mode. When responding to load changes caused by personnel flow, high temperature and low temperature areas, it gives priority to adjusting the air supply of the fresh air system and quickly adjusts the cooling and heating capacity.

[0121] In the summer cooling condition, when the environment pre-conditioning mode is running, the system estimates the thermal resistance of clothing through the user input of clothing in the indoor controller, collects indoor humidity, indoor temperature, and indoor average radiation temperature through multi-sensor fusion technology, calculates the PMV value and indoor dew point temperature, and evaluates whether the dew point temperature is lower than 20℃. If it is higher than 20℃, the water supply valve of the fresh air system is opened, the water supply pump of the fresh air system is turned on, and the fresh air system is operated at a high air volume. By introducing processed dry fresh air, the indoor humidity is quickly reduced to prevent condensation on the radiation surface. After the dew point temperature is lower than 20℃, the radiation system starts to operate at the same time as the fresh air system is running at a high air volume. The water supply temperature of the radiation system is set to 19℃, the floor radiation system, the ceiling radiation system, and the wall radiation system are turned on, and the radiation system water supply pump and the radiation system water supply valve are opened. When the PMV drops to 2, the environment pre-conditioning mode stops and enters the dynamic response control mode.

[0122] Furthermore, when the dynamic response control mode is running, the system gradually reduces the cooling capacity, estimates the indoor cooling load, and the indoor thermal environment tends to be balanced. The system prioritizes the fresh air system to the minimum fresh air volume, and then reduces the cooling capacity of the floor radiation system, wall radiation system, and ceiling radiation system in each control cycle. During this period, the indoor thermal comfort is monitored in real time until the indoor environment tends to be in a comfortable range. During this period, the radiation system water supply pump dynamically adjusts the frequency according to the flow demand and characteristic curve.

[0123] Furthermore, after the load adaptive compensation mode becomes stable, the control cycle is changed to 5 minutes, and computer vision is used to identify the number of people in the room and the high-temperature area, determine the trend of indoor load changes, and assist the air conditioning system to respond quickly. The fresh air system control parameters are changed first, and then the load changes are transferred to the radiation system in the next cycle under the load adaptive compensation mode.

[0124] Furthermore, in winter heating conditions, the environment pre-conditioning mode is running, the system inputs clothing through the user interface, estimates clothing thermal resistance, collects indoor humidity, indoor temperature, and indoor average radiation temperature through multi-sensor fusion technology, and calculates the PMV value; the fresh air system runs at high air volume, the radiation system is started, the radiation system water supply temperature is set to 35°C, the floor radiation system, ceiling radiation system, and wall radiation system are turned on, and the radiation system water supply pump and radiation system water supply valve are turned on. When the PMV reaches -2, the pre-treatment control mode stops and enters the dynamic response control mode.

[0125] Furthermore, when the dynamic response control mode is running, the system gradually reduces the heating supply, estimates the indoor heat load, and the indoor thermal environment tends to be balanced. The system prioritizes the fresh air system to the minimum fresh air volume, and then reduces the heating supply of the ceiling radiation system, wall radiation system, and floor radiation system in turn. During this period, the indoor thermal comfort is monitored in real time until the indoor environment tends to be in a comfortable range. During this period, the radiation system water supply pump dynamically adjusts the frequency according to the flow demand and characteristic curve.

[0126] Furthermore, after the load adaptive compensation mode is stable, the control cycle is changed to 5 minutes, using computer vision to identify the number of people in the room and the high-temperature area, determine the trend of indoor load changes, and assist the air conditioning system to respond quickly. The fresh air system control parameters are changed first, and then the load changes are gradually transferred to the radiation system in the adaptive compensation mode.

[0127] In the technical solution of the present invention, after the radiation air conditioner is started, the indoor environmental parameters, air conditioning system parameters, and user parameters are obtained through computer vision and multi-sensor fusion technology, and the indoor dew point temperature and thermal comfort are calculated according to the indoor environmental parameters, air conditioning system parameters, and user parameters; when the radiation air conditioner starts to run, according to the indoor dew point temperature, thermal comfort, and the current working mode, the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system are respectively regulated in accordance with the environmental pre-adjustment mode and the dynamic response control mode, until the current indoor thermal comfort satisfies the first thermal comfort range and the second thermal comfort range in turn; after the current indoor thermal comfort satisfies the second thermal comfort range, according to the indoor load change and the current working mode, the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system are respectively regulated in accordance with the load adaptive compensation mode to compensate for the changing indoor load, thereby effectively solving the problem of low reliability and timeliness of the control of the radiation air conditioner with multiple radiation surfaces caused by the prior art, and effectively improving the reliability and timeliness of the control of the radiation air conditioner with multiple radiation surfaces.

[0128] In the technical solution of the present invention, the multiple radiation surfaces include floor radiation surface, ceiling radiation surface, and wall radiation surface; the radiation air conditioner includes a fresh air system, a floor radiation system, a ceiling radiation system, and a wall radiation system, which greatly increases the radiation area, improves the radiation heat exchange amount, and can make the indoor temperature distribution more uniform.

[0129] In the technical solution of the present invention, the ceiling, wall and floor radiation in the radiation system respond dynamically according to the graded working mode. The ceiling radiation system is preferentially operated in the cooling working condition, and the floor radiation system is preferentially operated in the heating working condition (in the cooling working condition in summer, the radiation surface will exchange heat with the air through convection, so that the air temperature is reduced and the density is increased, so that the cold air gathers on the floor surface. Therefore, in the cooling working condition, the floor radiation efficiency is low and the ceiling radiation efficiency is high. Therefore, in the dynamic response control mode, the floor radiation system is preferentially turned off, and in the load adaptive compensation mode, the startup of the ceiling radiation system is preferentially guaranteed. Similarly, in the heating working condition, hot air gathers in the upper part of the room, the ceiling radiation efficiency is low and the floor radiation efficiency is high. Therefore, in the dynamic response control mode, the ceiling radiation system is preferentially turned off, and in the load adaptive compensation mode, the startup of the floor radiation system is preferentially guaranteed), improving the radiation heat exchange efficiency.

[0130] In the technical solution of the present invention, when the current working mode is the cooling mode, the control priorities of the compensation system are: fresh air system, ceiling radiation system, wall radiation system, and floor radiation system; in the heating mode, the control priorities of the compensation system are: fresh air system, floor radiation system, wall radiation system, and ceiling radiation system; different compensation systems can be flexibly selected according to the working mode; at the same time, abnormal area diagnosis can be performed, and other systems can be used for compensation to quickly respond to load changes in abnormal areas.

[0131] Embodiment 2

[0132] like Fig.10 As shown, the technical solution of the present invention also provides a multi-radiation surface radiation air conditioning terminal partition control system, including:

[0133] The acquisition module 1011 acquires indoor environmental parameters, air conditioning system parameters, and user parameters through computer vision and multi-sensor fusion technology after the radiation air conditioner is started, and calculates indoor dew point temperature and thermal comfort according to the indoor environmental parameters, air conditioning system parameters, and user parameters; the working modes of the radiation air conditioner include: environmental pre-adjustment mode, dynamic response control mode, and load adaptive compensation mode; the multiple radiation surfaces include floor radiation surfaces, ceiling radiation surfaces, and wall radiation surfaces; the radiation air conditioner includes a fresh air system, a floor radiation system, a ceiling radiation system, and a wall radiation system;

[0134] The first control module 1012, when the radiation air conditioner starts to operate, controls the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system respectively according to the environmental pre-adjustment mode and the dynamic response control mode according to the indoor dew point temperature, the thermal comfort, and the current working mode, until the current indoor thermal comfort satisfies the first thermal comfort range and the second thermal comfort range in sequence; wherein the current working mode includes the cooling mode and the heating mode, and the first thermal comfort range is greater than the second thermal comfort range;

[0135] The second control module 1013 controls the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system respectively according to the load adaptive compensation mode based on the indoor load change and the current working mode after the current indoor thermal comfort meets the second thermal comfort range to compensate for the changing indoor load.

[0136] The implementation process of the acquisition module 1011, the first control module 1012, and the second control module 1013 in this embodiment 2 corresponds to the method steps in the embodiment 1, and the technical effects achieved are also the same as the technical effects achieved in the embodiment 1, and will not be repeated in this embodiment 2.

[0137] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A multi-radiation surface radiation air conditioning terminal zoning control method, characterized in that: include; After the radiant air conditioner is started, the indoor environmental parameters, air conditioning system parameters, and user parameters are obtained through computer vision and multi-sensor fusion technology, and the indoor dew point temperature and thermal comfort are calculated based on the indoor environmental parameters, air conditioning system parameters, and user parameters. The working modes of the radiant air conditioner include: environmental pre-adjustment mode, dynamic response control mode, and load adaptive compensation mode; the multiple radiant surfaces include floor radiant surfaces, ceiling radiant surfaces, and wall radiant surfaces; the radiant air conditioner includes a fresh air system, a floor radiant system, a ceiling radiant system, and a wall radiant system; When the radiation air conditioner starts to operate, according to the indoor dew point temperature, thermal comfort, and current working mode, the fresh air system, floor radiation system, ceiling radiation system, and wall radiation system are regulated in accordance with the environmental pre-adjustment mode and the dynamic response control mode, respectively, until the current indoor thermal comfort satisfies the first thermal comfort range and the second thermal comfort range in turn; wherein the current working mode includes the cooling mode and the heating mode, and the first thermal comfort range is greater than the second thermal comfort range; After the current indoor thermal comfort meets the second thermal comfort range, the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system are regulated and controlled according to the load adaptive compensation mode according to the indoor load change and the current working mode to compensate for the changed indoor load; wherein, after the current indoor thermal comfort meets the second thermal comfort range, the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system are regulated and controlled according to the load adaptive compensation mode according to the indoor load change and the current working mode to compensate for the changed indoor load, specifically including: When the current working mode is the cooling mode and the current indoor thermal comfort meets the second thermal comfort range, the indoor cooling load change is identified, wherein the indoor cooling load change includes the heat emitted by the high temperature area or the heat absorbed by the low temperature area and the personnel load change; The fresh air or radiation system being regulated is used as the compensation system for load changes. The control priority of the compensation system is: fresh air system, ceiling radiation system, wall radiation system, floor radiation system; If the current compensation system is a fresh air system, if the indoor cooling load change is less than zero, the fresh air volume will be reduced; if the indoor cooling load change is greater than zero, the ceiling radiation system will be turned on to increase the cooling capacity; If the current compensation system is the ceiling radiation system, if the indoor cooling load change is less than zero, then the ceiling radiation system water supply temperature is increased or the ceiling radiation system is closed to reduce the cooling capacity; if the indoor cooling load change is greater than zero, then the ceiling radiation system water supply temperature is reduced or the floor radiation system is opened to increase the cooling capacity; If the current compensation system is a wall radiation system, if the indoor cooling load change is less than zero, then increase the wall radiation system water supply temperature or turn off the wall radiation system to reduce the cooling capacity; if the indoor cooling load change is greater than zero, then lower the wall radiation system water supply temperature or turn on the floor radiation system to increase the cooling capacity; If the current load change bearing system is the floor radiation system, if the indoor cooling load change is less than zero, then increase the floor radiation system water supply temperature or shut down the floor radiation system to reduce the cooling capacity; if the indoor cooling load change is greater than zero, then lower the floor radiation system water supply temperature or increase the fresh air volume to increase the cooling capacity; Determine whether the current thermal comfort is within the second thermal comfort range. If not, redetermine the indoor cooling load change; if yes, the indoor temperature reaches a comfortable state and continues to maintain it; When the current working mode is the heating mode and the current indoor thermal comfort meets the second thermal comfort range, the indoor heat load change is identified, wherein the indoor heat load change includes the heat emitted by the high temperature area or the heat absorbed by the low temperature area and the personnel load change; The fresh air or radiation system being regulated is used as the compensation system for load changes. The control priority of the compensation system is: fresh air system, floor radiation system, wall radiation system, and ceiling radiation system; If the current compensation system is the fresh air system, if the indoor heat load change is less than zero, the fresh air volume will be reduced; if the indoor heat load change is greater than zero, the floor radiation system will be turned on to increase the heating supply; If the current compensation system is the ceiling radiation system, if the indoor heat load change is less than zero, then the ceiling radiation system water supply temperature is lowered or the floor radiation system is turned off to reduce the heat supply; if the indoor heat load change is greater than zero, then the ceiling radiation system water supply temperature is increased or the wall radiation system is turned on to increase the heat supply; If the current compensation system is the wall radiation system, if the indoor heat load change is less than zero, then the wall radiation system water supply temperature is reduced or the wall radiation system is turned off to reduce the heat supply; if the indoor heat load change is greater than zero, then the wall radiation system water supply temperature is increased or the ceiling radiation system is turned on to increase the heat supply; If the current load change bearing system is the ceiling radiation system, if the indoor heat load change is less than zero, then reduce the water supply temperature of the floor radiation system or shut down the ceiling radiation system to reduce the cooling capacity; if the indoor heat load change is greater than zero, then increase the water supply temperature of the ceiling radiation system or increase the fresh air volume to increase the heating capacity; It is determined whether the current thermal comfort is within the second thermal comfort range. If not, the indoor heat load change is re-determined; if yes, the indoor temperature reaches a comfortable state and continues to be maintained.

2. According to the method for controlling the terminal zoning of a multi-radiation surface radiation air conditioner according to claim 1, it is characterized in that the floor The radiation system includes: floor radiation panels installed under the floor, floor radiation water supply pipelines, floor radiation return pipelines, floor radiation water supply flowmeters, floor water supply thermometers, and floor return thermometers; the wall radiation system includes: wall radiation panels installed on multiple walls, wall radiation panel water supply pipelines, wall radiation panel return pipelines, wall radiation water supply flowmeters, wall water supply thermometers, and wall return thermometers; the ceiling radiation system includes: ceiling radiation panels installed under the ceiling, ceiling radiation water supply pipelines, ceiling radiation return pipelines, ceiling radiation water supply flowmeters, ceiling water supply thermometers, and ceiling return thermometers; the radiation air conditioner also includes a radiation system main pipeline, and the radiation system main pipeline includes: a radiation system water supply pipeline, a radiation system return pipeline, a radiation system water supply thermometer, and a radiation system return thermometer.

3. A multi-radiation surface radiation air conditioning terminal zoning control method according to claim 1, characterized in that: The indoor environment parameters, air conditioning system parameters, and user parameters are obtained through computer vision and multi-sensor fusion technology, including: The thermal imager and the visible light camera are fixed on the same bracket so that the field of view of the thermal imager and the visible light camera overlap; a certain area in each working mode of the room is photographed simultaneously by the thermal imager and the visible light camera respectively; the area includes a radiation surface or a human body surface; The data of each pixel in the same area of ​​the thermal imager photo and the visible light camera photo are fused, and the fused photos of the radiation surface and the fused photos of the human body surface under various working conditions are identified using the trained computer vision model to respectively identify the floor radiation area, the wall radiation area, the ceiling radiation area, and the human body radiation area; the high temperature area and the low temperature area are identified through the thermal imager photo; wherein the high temperature area refers to the area in the thermal imager photo that is higher than the first preset temperature threshold, and the low temperature area refers to the area in the thermal imager photo that is lower than the second preset temperature threshold; wherein the first preset temperature threshold is greater than the second preset temperature threshold; Use temperature and humidity sensors to obtain indoor temperature and humidity, and use black ball thermometers to obtain indoor radiation temperature; Obtain the setting parameters of water supply flowmeter, water supply thermometer and return water thermometer in different radiation systems; User information is collected through the human-computer interactive display screen installed indoors; the user information includes: indoor clothing, indoor occupant gender, and indoor occupant metabolic rate.

4. A multi-radiation surface radiation air conditioning terminal zoning control method according to claim 1, characterized in that: According to the indoor dew point temperature, thermal comfort, and current working mode, the fresh air system, floor radiation system, ceiling radiation system, and wall radiation system are regulated respectively in accordance with the environmental pre-adjustment mode and the dynamic response control mode until the current indoor thermal comfort meets the first thermal comfort range and the second thermal comfort range. Specifically, the following are included: When the current working mode is cooling mode, according to the environmental pre-adjustment mode, determine whether the indoor dew point temperature is less than the third preset temperature threshold value. If not, control or maintain the fresh air system to operate at high air volume, and enter the next control cycle; if less, determine whether the thermal comfort is less than the first preset thermal comfort threshold value. If not, control or maintain the fresh air system to operate at high air volume, respectively start the floor radiation system, the ceiling radiation system, the wall radiation system, or maintain the floor radiation system, the ceiling radiation system, the wall radiation system in operation, and enter the next control cycle; if less, enter the dynamic response control mode; wherein the first preset thermal comfort threshold value is the maximum value of the first thermal comfort range; In the dynamic response control mode, the fresh air system of the current control cycle is reduced to the minimum fresh air volume, and it is determined whether the thermal comfort level in the next control cycle is less than the second preset thermal comfort threshold. If so, the load adaptive compensation mode is entered; if not, it is determined whether the thermal comfort level in the adjacent control cycle decreases. If not, the cooling capacity is increased in steps of 1°C according to the number of control cycles and the adjustment execution order of the fresh air system, floor radiation system, wall radiation system, and ceiling radiation system, and the next control cycle is entered; if it decreases, the cooling capacity is increased in steps of 1°C according to the number of control cycles and the adjustment execution order of the floor radiation system, wall radiation system, and ceiling radiation system. The water supply temperature of the floor radiation system is increased to the fourth preset temperature threshold, the floor radiation system is turned off, the water supply temperature of the wall radiation system is increased to the fourth preset temperature threshold, the wall radiation system is turned off, the water supply temperature of the ceiling radiation system is increased to the fourth preset temperature threshold, the water supply temperature of the ceiling radiation system is increased to the fifth preset temperature threshold, and the next control cycle is entered until the thermal comfort level in the control cycle is less than the second preset thermal comfort threshold; wherein the second preset thermal comfort threshold is the maximum value of the second thermal comfort range, and the first preset temperature threshold, the fifth preset temperature threshold, the fourth preset temperature threshold, the third preset temperature threshold, and the second preset temperature threshold decrease in sequence.

5. A multi-radiation surface radiation air conditioning terminal zoning control method according to claim 1, characterized in that When the current indoor thermal comfort meets the second thermal comfort range, the fresh air system, floor radiation system, ceiling radiation system and wall radiation system are regulated according to the load adaptive compensation mode according to the indoor load change and the current working mode to compensate for the change in indoor load. Specifically, the following are included: The computer vision model is used to diagnose abnormalities in the floor radiation area, wall radiation area, and ceiling radiation area, and the temperature abnormality area is found according to the average temperature of each area. The identification of the temperature abnormality area is specifically as follows: the temperature of the same area in the thermal imaging camera photos of multiple viewing angles is compared. If there is a viewing angle that meets the characteristics of the radiation area and the temperature difference with the same radiation area is less than the preset temperature difference threshold, then the area is judged to be normal; otherwise, the area is judged to be a temperature abnormality area. The cooling capacity loss caused by the current abnormal temperature area is calculated, and the air volume of the fresh air system is adjusted within the first preset time period to compensate for the cooling load change caused by the cooling capacity loss caused by the current abnormal temperature area. If the first preset time period is exceeded, the cooling capacity loss caused by the current abnormal temperature area is included in the indoor cooling load change.

6. A multi-radiation surface radiation air conditioning terminal zoning control method according to claim 1, characterized in that: According to the indoor dew point temperature, thermal comfort, and current working mode, the fresh air system, floor radiation system, ceiling radiation system, and wall radiation system are regulated respectively in accordance with the environmental pre-adjustment mode and the dynamic response control mode until the current indoor thermal comfort meets the first thermal comfort range and the second thermal comfort range. Specifically, the following are also included: When the current working mode is the heating mode, according to the environmental pre-adjustment mode, it is determined whether the thermal comfort is greater than the third preset thermal comfort threshold. If not, the fresh air system is controlled or maintained to operate at a high air volume, and the floor radiation system, the ceiling radiation system, and the wall radiation system are respectively started or the floor radiation system, the ceiling radiation system, and the wall radiation system are maintained in operation to enter the next control cycle. If greater, the dynamic response control mode is entered; wherein the third preset thermal comfort threshold is the minimum value of the first thermal comfort range. In the dynamic response control mode, the fresh air system of the current control cycle is reduced to the minimum fresh air volume, and it is determined whether the thermal comfort level of the next control cycle is greater than the fourth preset thermal comfort threshold. If so, the load adaptive compensation mode is entered; if not, it is determined whether the thermal comfort level of the adjacent control cycle increases. If not, the heating supply is increased in steps of 1°C according to the adjustment execution order of the fresh air system, ceiling radiation system, wall radiation system, and floor radiation system according to the number of control cycles, and the next control cycle is entered; if it increases, the heating supply of the ceiling radiation system is reduced in sequence according to the number of control cycles and the adjustment execution order of the ceiling radiation system, wall radiation system, and floor radiation system. When the water supply temperature reaches the sixth preset temperature threshold, the ceiling radiation system is turned off, and the water supply temperature of the wall radiation system is lowered to the sixth preset temperature threshold, the wall panel radiation system is turned off, and the water supply temperature of the floor radiation system is lowered to the sixth preset temperature threshold, the water supply temperature of the floor radiation system is lowered to the seventh preset temperature threshold, and the next control cycle is entered until the thermal comfort level in this control cycle is less than the fourth preset thermal comfort threshold; wherein the fourth preset thermal comfort threshold is the minimum value of the second thermal comfort range, and the first preset temperature threshold, the sixth preset temperature threshold, the seventh preset temperature threshold, the fifth preset temperature threshold, the fourth preset temperature threshold, the third preset temperature threshold, and the second preset temperature threshold decrease in sequence.

7. A multi-radiation surface radiation air conditioning terminal zoning control method according to claim 1, characterized in that When the current indoor thermal comfort meets the second thermal comfort range, the fresh air system, floor radiation system, ceiling radiation system and wall radiation system are regulated according to the load adaptive compensation mode according to the indoor load change and the current working mode to compensate for the change in indoor load. Specifically, the following are included: The computer vision model is used to diagnose abnormalities in the floor radiation area, wall radiation area, and ceiling radiation area, and the temperature abnormality area is found according to the average temperature of each area. The identification of the temperature abnormality area is specifically as follows: the temperature of the same area in the thermal imaging camera photos of multiple viewing angles is compared. If there is a viewing angle that meets the characteristics of the radiation area and the temperature difference with the same radiation area is less than the preset temperature difference threshold, then the area is judged to be normal; otherwise, the area is judged to be a temperature abnormality area. Calculate the heat loss caused by the current temperature abnormality area, adjust the air volume of the fresh air system within the first preset time period, compensate for the load change caused by the heat loss caused by the current temperature abnormality area, and include the heat loss caused by the current temperature abnormality area in the indoor heat load change after exceeding the first preset time period.

8. A multi-radiation surface radiation air conditioning terminal partition control system, characterized in that: include; The acquisition module obtains indoor environmental parameters, air conditioning system parameters, and user parameters through computer vision and multi-sensor fusion technology after the radiation air conditioner is started, and calculates the indoor dew point temperature and thermal comfort based on the indoor environmental parameters, air conditioning system parameters, and user parameters; The working modes of the radiant air conditioner include: environmental pre-adjustment mode, dynamic response control mode, and load adaptive compensation mode; the multiple radiant surfaces include floor radiant surfaces, ceiling radiant surfaces, and wall radiant surfaces; the radiant air conditioner includes a fresh air system, a floor radiant system, a ceiling radiant system, and a wall radiant system; The first control module, when the radiation air conditioner starts to operate, controls the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system respectively according to the environmental pre-adjustment mode and the dynamic response control mode according to the indoor dew point temperature, thermal comfort, and the current working mode, until the current indoor thermal comfort satisfies the first thermal comfort range and the second thermal comfort range in sequence; wherein the current working mode includes a cooling mode and a heating mode, and the first thermal comfort range is greater than the second thermal comfort range; The second control module, after the current indoor thermal comfort meets the second thermal comfort range, according to the indoor load change and the current working mode, according to the load adaptive compensation mode, respectively controls the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system to compensate for the change in indoor load; wherein, after the current indoor thermal comfort meets the second thermal comfort range, according to the indoor load change and the current working mode, according to the load adaptive compensation mode, respectively controls the fresh air system, the floor radiation system, the ceiling radiation system, and the wall radiation system to compensate for the change in indoor load, specifically including: When the current working mode is the cooling mode and the current indoor thermal comfort meets the second thermal comfort range, the indoor cooling load change is identified, wherein the indoor cooling load change includes the heat emitted by the high temperature area or the heat absorbed by the low temperature area and the personnel load change; The fresh air or radiation system being regulated is used as the compensation system for load changes. The control priority of the compensation system is: fresh air system, ceiling radiation system, wall radiation system, floor radiation system; If the current compensation system is a fresh air system, if the indoor cooling load change is less than zero, the fresh air volume will be reduced; if the indoor cooling load change is greater than zero, the ceiling radiation system will be turned on to increase the cooling capacity; If the current compensation system is the ceiling radiation system, if the indoor cooling load change is less than zero, then the ceiling radiation system water supply temperature is increased or the ceiling radiation system is closed to reduce the cooling capacity; if the indoor cooling load change is greater than zero, then the ceiling radiation system water supply temperature is reduced or the floor radiation system is opened to increase the cooling capacity; If the current compensation system is a wall radiation system, if the indoor cooling load change is less than zero, then increase the wall radiation system water supply temperature or turn off the wall radiation system to reduce the cooling capacity; if the indoor cooling load change is greater than zero, then lower the wall radiation system water supply temperature or turn on the floor radiation system to increase the cooling capacity; If the current load change bearing system is the floor radiation system, if the indoor cooling load change is less than zero, then increase the floor radiation system water supply temperature or shut down the floor radiation system to reduce the cooling capacity; if the indoor cooling load change is greater than zero, then lower the floor radiation system water supply temperature or increase the fresh air volume to increase the cooling capacity; Determine whether the current thermal comfort is within the second thermal comfort range. If not, redetermine the indoor cooling load change; if yes, the indoor temperature reaches a comfortable state and continues to maintain it; When the current working mode is the heating mode and the current indoor thermal comfort meets the second thermal comfort range, the indoor heat load change is identified, wherein the indoor heat load change includes the heat emitted by the high temperature area or the heat absorbed by the low temperature area and the personnel load change; The fresh air or radiation system being regulated is used as the compensation system for load changes. The control priority of the compensation system is: fresh air system, floor radiation system, wall radiation system, and ceiling radiation system; If the current compensation system is the fresh air system, if the indoor heat load change is less than zero, the fresh air volume will be reduced; if the indoor heat load change is greater than zero, the floor radiation system will be turned on to increase the heating supply; If the current compensation system is the ceiling radiation system, if the indoor heat load change is less than zero, then the ceiling radiation system water supply temperature is lowered or the floor radiation system is turned off to reduce the heat supply; if the indoor heat load change is greater than zero, then the ceiling radiation system water supply temperature is increased or the wall radiation system is turned on to increase the heat supply; If the current compensation system is the wall radiation system, if the indoor heat load change is less than zero, then the wall radiation system water supply temperature is reduced or the wall radiation system is turned off to reduce the heat supply; if the indoor heat load change is greater than zero, then the wall radiation system water supply temperature is increased or the ceiling radiation system is turned on to increase the heat supply; If the current load change bearing system is the ceiling radiation system, if the indoor heat load change is less than zero, then reduce the water supply temperature of the floor radiation system or shut down the ceiling radiation system to reduce the cooling capacity; if the indoor heat load change is greater than zero, then increase the water supply temperature of the ceiling radiation system or increase the fresh air volume to increase the heating capacity; It is determined whether the current thermal comfort is within the second thermal comfort range. If not, the indoor heat load change is re-determined; if yes, the indoor temperature reaches a comfortable state and continues to be maintained.

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