Building internal temperature equalization control method and system based on spatial heat island distribution

Abstract

The application discloses a building internal temperature equalization control method and system based on a space heat island distribution, relates to the technical field of building intellectualization, and comprises the following steps: obtaining air supply parameters and space airflow distribution data of each air conditioner terminal in a building interior, and constructing a jet coverage deviation set; identifying an attached jet state based on the jet coverage deviation set and performing state identification on the air conditioner terminal to obtain an attached jet terminal; adjusting a flow guide angle of the attached jet terminal, and constructing a deviation mapping according to an adjustment result; dynamically correcting the flow guide angle of the attached jet terminal according to the deviation mapping to obtain a corrected flow guide angle; adjusting an air supply amount upper limit constraint of the attached jet terminal according to the deviation mapping and performing cold quantity distribution to obtain an adjusted air supply amount; and generating an air conditioner terminal control instruction and performing temperature control, so that the attached wall effect of the air supply jet in the existing building air conditioner regulation and control is solved, and the misjudgment problem of a heat island position is solved.

Description

Technical Field

[0001] This invention relates to the field of building intelligence technology, and more specifically, to a method and system for equalizing building internal temperature based on spatial heat island distribution. Background Technology

[0002] In modern architecture, especially in large office buildings, shopping malls, convention centers, and multi-functional complexes, multiple air conditioners are typically installed to regulate indoor air. These air conditioners are distributed across different floors, rooms, and functional areas, and their layout is usually designed based on the building's floor plan, intended use, and occupant distribution to meet the temperature and air quality requirements of each area.

[0003] However, in existing building air conditioning systems, the air jet, after leaving the air outlet of the air conditioning terminal, is affected by obstacles such as interior walls, ceilings, partitions, and large indoor equipment, resulting in a phenomenon known as the wall attachment effect—the jet deviating from the preset design coverage area, causing a discrepancy between the actual air distribution and the theoretical design. When using indoor temperature measurement points or airflow distribution data to determine the location of heat islands, the continuous adhesion of the wall-attached jet to walls or obstacles can lead to misjudgments of the local temperature field, identifying areas of heat accumulation or insufficient cooling as heat islands or cold islands, which is inconsistent with the actual distribution. This misjudgment directly affects the distribution of cooling capacity and the adjustment of air supply direction at the air conditioning terminal, reducing the accuracy of indoor temperature balance control and causing localized areas to be too cold or too hot, affecting not only occupant comfort but also potentially increasing energy consumption and operating costs. To address these problems, this invention proposes a solution. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a method and system for equalizing building internal temperature based on spatial heat island distribution. By identifying the wall attachment state of the air conditioning terminal jets inside the building, the guiding angle and air supply volume of the attached jets are dynamically adjusted, and air conditioning terminal control commands are generated to solve the problem of misjudgment of heat island location caused by the wall attachment effect of air supply jets in existing building air conditioning control.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A method for equalizing building interior temperature based on spatial heat island distribution includes the following steps: acquiring the air supply parameters and spatial airflow distribution data of each air conditioning terminal inside the building, and constructing a jet coverage deviation set based on the temporal correspondence between the air supply parameters and spatial airflow distribution data; identifying the attached jet state based on the jet coverage deviation set, and identifying the state of the air conditioning terminal according to the attached jet state to obtain the attached jet terminal; adjusting the guide angle of the attached jet terminal, and constructing an offset mapping between the jet attachment path and the heat island distribution based on the adjustment result; dynamically correcting the guide angle of the attached jet terminal according to the offset mapping to obtain the corrected guide angle; adjusting the upper limit constraint of the air supply volume of the attached jet terminal according to the offset mapping, and distributing cooling capacity based on the adjusted upper limit constraint of the air supply volume to obtain the adjusted air supply volume; generating air conditioning terminal control commands based on the corrected guide angle and the adjusted air supply volume, and performing temperature control based on the air conditioning terminal control commands.

[0007] In a preferred embodiment, the step of acquiring the air supply parameters and spatial airflow distribution data of each air conditioning terminal inside the building, and constructing a jet coverage deviation set based on the temporal correspondence between the air supply parameters and the spatial airflow distribution data, specifically involves: acquiring the air supply velocity, air supply temperature, and air outlet louver angle of each air conditioning terminal in multiple continuous time sections to obtain the air supply parameters of each air conditioning terminal; simultaneously acquiring the spatial airflow velocity distribution field and spatial temperature distribution field within the corresponding air supply area of ​​each air conditioning terminal to obtain the spatial airflow distribution data of each air conditioning terminal; aligning the air supply parameters and spatial airflow distribution data of each time section according to the timestamp to obtain the coupled state unit of each time section; extracting the spatial coordinate deviation between the actual arrival position of the air supply jet and the preset design coverage position in each coupled state unit to obtain the jet coverage deviation vector of each time section; and concatenating the jet coverage deviation vectors of all time sections in chronological order to construct the jet coverage deviation set of each air conditioning terminal.

[0008] In a preferred embodiment, the step of identifying the attached jet state based on the jet coverage deviation set and identifying the state of the air conditioning terminal based on the attached jet state to obtain the attached jet terminal specifically involves: identifying the jet-uncovered area of ​​the air conditioning terminal based on the jet coverage deviation set; extracting the geometric boundary of each jet-uncovered area and obtaining the air supply jet trajectory of the corresponding air conditioning terminal; tracking the path change of the jet after leaving the air outlet based on the air supply jet trajectory to obtain a path change set; identifying the contact point between the air supply jet trajectory and the internal obstacles and walls of the building based on the path change set to obtain the jet attachment point; starting from the jet attachment point, tracing downstream along the jet trajectory and determining the attachment distance and attachment angle of the jet after attachment to the wall to obtain the attached jet characteristics; and based on the attached jet characteristics, air conditioning terminals whose jet trajectories are continuously attached to the internal obstacles and walls of the building and whose attachment distance exceeds a preset distance threshold are identified as attached jet terminals.

[0009] In a preferred embodiment, the adjustment of the guide angle of the attached jet tip and the construction of an offset mapping between the jet's wall-attached path and the heat island distribution based on the adjustment result specifically involve: obtaining the current guide angle of the attached jet tip and calculating the minimum guide deflection angle required for the jet to detach from its current wall-attached state based on the characteristics of the attached jet, thus obtaining the initial adjustment angle; controlling the deflection of the guide plate at the attached jet tip according to the initial adjustment angle and monitoring the change in the jet trajectory after deflection in real time, thus obtaining the adjusted jet path; acquiring heat island distribution data inside the building and identifying the center position and boundary range of the heat island area, thus obtaining a heat island spatial distribution model; spatially superimposing the adjusted jet path and the heat island spatial distribution model, and calculating the spatial overlap rate between the coverage area of ​​the adjusted jet path and the heat island area; and constructing an offset mapping with the attached jet tip as the origin, the adjusted jet path as the first vector, and the center of the heat island area as the second vector based on the spatial overlap rate, thus obtaining the offset mapping between the jet's wall-attached path and the heat island distribution.

[0010] In a preferred embodiment, the step of dynamically correcting the guide angle of the attached jet end based on the offset mapping to obtain the corrected guide angle specifically involves: extracting the spatial offset vector between the end point of the adjusted jet path and the center point of the heat island region based on the offset mapping and calculating the direction angle of the spatial offset vector; obtaining the deflection angle of the guide plate at the end of the attached jet, and generating a guide angle correction amount based on the difference between the direction angle of the spatial offset vector and the current deflection angle; decomposing the guide angle correction amount into a horizontal correction component and a vertical correction component, and generating a first control sequence for the guide plate based on the horizontal correction component and the vertical correction component; gradually adjusting the angle of the guide plate according to the first control sequence, and updating the offset mapping in real time after each adjustment to obtain a first offset mapping; determining the current guide angle when the spatial offset vector between the end point of the adjusted jet path and the center point of the heat island region in the first offset mapping is less than a preset offset threshold, thus obtaining the corrected guide angle.

[0011] In a preferred embodiment, adjusting the upper limit constraint of the air supply volume at the attached jet end according to the offset mapping specifically involves: calculating the heat load value of the heat island area corresponding to the attached jet end based on the offset mapping, and determining the initial upper limit of the air supply volume at the attached jet end based on the heat load value; obtaining the air supply duct pressure data of the attached jet end, and calculating the maximum allowable air supply volume at the attached jet end based on the air supply duct pressure data to obtain the upper limit of the physical air supply volume; comparing the initial upper limit of the air supply volume with the upper limit of the physical air supply volume, and taking the smaller value of the two as the adjusted upper limit constraint of the air supply volume.

[0012] In a preferred embodiment, the step of allocating cooling capacity based on the adjusted upper limit constraint of the air supply volume to obtain the adjusted air supply volume specifically involves: calculating the difference between the actual air supply volume of the attached jet terminal and the adjusted upper limit constraint of the air supply volume to obtain a first cooling capacity value; identifying other air conditioning terminals inside the building besides the attached jet terminals as detached jet terminals, and calculating the cooling capacity demand gap of each detached jet terminal; allocating the first cooling capacity value to each detached jet terminal according to the proportion of the cooling capacity demand gap of each detached jet terminal to the total cooling capacity demand gap of all detached jet terminals to obtain the initial allocated air supply volume; acquiring the air supply duct resistance characteristic data of each detached jet terminal, and adjusting the initial allocated air supply volume based on the air supply duct resistance characteristic data to obtain the adjusted air supply volume.

[0013] In a preferred embodiment, the step of acquiring the air supply duct resistance characteristic data of each jet exiting end and adjusting the initially allocated air supply volume based on the air supply duct resistance characteristic data to obtain the adjusted air supply volume specifically involves: acquiring the air supply duct resistance characteristic data of each jet exiting end, and calculating the air supply pressure change value of each jet exiting end after initial allocation based on the initially allocated air supply volume and the air supply duct resistance characteristic data; comparing the air supply pressure change value of each jet exiting end with a preset pressure fluctuation threshold, and identifying the first jet exiting end based on the comparison result; calculating the difference between the air supply pressure change value of each first jet exiting end and the preset pressure fluctuation threshold, and adjusting the valve opening of the branch where the first jet exiting end is located based on the difference to obtain the valve adjustment amount; recalculating the first air supply volume of each first jet exiting end based on the valve adjustment amount, and adjusting the initially allocated air supply volume based on the first air supply volume to obtain the adjusted air supply volume.

[0014] In a preferred embodiment, the step of generating air conditioning terminal control commands based on the corrected airflow angle and adjusted air volume, and performing temperature control based on the air conditioning terminal control commands, specifically includes:

[0015] The corrected airflow angle is parsed into a motor control pulse sequence of the airflow guide plate to obtain the first control command; the adjusted air volume is parsed into the operating frequency adjustment signal of the variable frequency fan to obtain the second control command; the first control command and the second control command are timestamped and encapsulated into control commands for the air conditioning terminals; the control commands of all air conditioning terminals inside the building are obtained, and a control command set is generated according to the geographical location of the air conditioning terminals and the preset network topology; the control command set is sent to the corresponding air conditioning terminals for temperature control.

[0016] The technical effects and advantages of this invention regarding the method and system for equalizing building interior temperature based on spatial heat island distribution are as follows:

[0017] This invention acquires the air supply parameters and spatial airflow distribution data of each air conditioning terminal inside a building, and constructs a jet coverage deviation set based on the temporal correspondence between the two, which can comprehensively reflect the actual spatial distribution of the air supply jets of each air conditioning terminal. Furthermore, it identifies the attached jet state based on the jet coverage deviation set and performs state identification on the air conditioning terminals to obtain the attached jet terminals, thereby accurately locating the jet area affected by the attached effect. The guide angle of the attached jet terminals is adjusted, and an offset mapping between the jet attachment path and the heat island distribution is constructed based on the adjustment results, enabling quantitative analysis of the jet deviation from the heat island area. The guide angle of the attached jet terminals is dynamically corrected using the offset mapping to obtain the corrected guide angle. Simultaneously, the upper limit constraint of the air supply volume of the attached jet terminals is adjusted and cooling capacity is allocated based on the offset mapping to obtain the adjusted air supply volume. Finally, air conditioning terminal control commands are generated based on the corrected guide angle and adjusted air supply volume to achieve precise control of the building's internal temperature. This invention can effectively overcome the problem of misjudging the location of the heat island caused by the wall-attached effect in the existing building air conditioning control. It not only improves the uniformity and comfort of indoor temperature, but also enables the rational distribution of cooling capacity of each air conditioning terminal, optimizes energy consumption, and improves the operating efficiency of air conditioning. Attached Figure Description

[0018] Figure 1 This is a flowchart illustrating the building interior temperature equalization control method based on spatial heat island distribution according to the present invention.

[0019] Figure 2 This is a schematic diagram of the internal temperature equalization control system for buildings based on spatial heat island distribution, as per the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1, Figure 1 The present invention provides a method for equalizing building interior temperature based on spatial heat island distribution, comprising the following steps:

[0022] S1, acquire the air supply parameters and spatial airflow distribution data of each air conditioning terminal inside the building, and construct the jet coverage deviation set based on the temporal correspondence between the air supply parameters and the spatial airflow distribution data;

[0023] In this embodiment, the air supply parameters and spatial airflow distribution data of each air conditioning terminal inside the building are obtained, and a jet coverage deviation set is constructed based on the temporal correspondence between the air supply parameters and the spatial airflow distribution data, specifically:

[0024] The air supply velocity, air supply temperature, and air outlet louver angle of each air conditioning terminal in the building are obtained at multiple continuous time sections to obtain the air supply parameters of each air conditioning terminal. At the same time, the spatial airflow velocity distribution field and spatial temperature distribution field in the corresponding air supply area of ​​each air conditioning terminal are obtained to obtain the spatial airflow distribution data of each air conditioning terminal.

[0025] Align the air supply parameters and spatial airflow distribution data at each time segment with the timestamps to obtain the coupled state unit at each time segment;

[0026] Extract the spatial coordinate deviation between the actual arrival position of the air jet and the preset design coverage position in each coupled state unit to obtain the jet coverage deviation vector under each time section;

[0027] The jet coverage deviation vectors of all time sections are concatenated in chronological order to construct the jet coverage deviation set for each air conditioning terminal.

[0028] It should be noted that the air supply parameters of each air conditioning terminal refer to a set of operating quantities that characterize the terminal's ability to deliver air to the room and its air outlet status at a specific time segment. These parameters typically include air supply velocity, air supply temperature, and the opening or guiding angle of the air outlet louvers. Among these, air supply velocity reflects the level of air kinetic energy, air supply temperature reflects the carrying capacity of cooling or heating, and louver angle is used to characterize the initial ejection direction and diffusion trend of the airflow. For example, at a certain time segment, if the air supply velocity of an air conditioning terminal is 3.2 m / s, the air supply temperature is 16℃, and the louver angle is 30° downward tilted, it can be comprehensively reflected that the jet of air from this terminal has strong downward momentum and is mainly for cooling.

[0029] In addition, the spatial airflow distribution data of each air conditioning terminal refers to the data set formed by discretely sampling the airflow state and thermal state at various points in the space within the air supply area where the air conditioning terminal is located. Specifically, it includes the airflow velocity magnitude and direction information of multiple sampling points in the space, as well as the temperature distribution at the corresponding locations. For example, if several measuring points are arranged in the air supply area, and the wind speed at each measuring point is recorded to be between 0.2 m / s and 1.5 m / s, the airflow direction is significantly deflected, and the temperature distribution is between 22℃ and 27℃, then this set of data can reflect the diffusion path, attenuation, and influence range of the airflow in the space.

[0030] Furthermore, when acquiring data from multiple consecutive time segments, each set of air supply parameters and corresponding spatial airflow distribution data is associated with a collection time identifier and calibrated using a unified time reference, such as forming a discrete time series with a time interval of 1 second or 5 seconds. In actual processing, the air supply parameters and spatial airflow distribution data under the same time identifier are matched. When there is a slight deviation in the collection time, data with a time difference within a preset tolerance range can be merged. For example, if the air supply parameter is recorded at 10:00:05 and the spatial airflow distribution data is collected at 10:00:05.3, then within the allowable error range, the two are considered as the same time segment data. After alignment, the air supply velocity, air supply temperature, louver angle under this time segment are associated and encapsulated with the airflow velocity field and temperature field in the corresponding area to form a complete state description unit. This unit contains both the air supply conditions on the input side and the spatial response results on the output side.

[0031] In each coupled state unit, the actual influence range and main action path of the air jet are first identified based on the spatial airflow distribution data. For example, the main axis of the jet is determined by analyzing areas with high and continuous wind speeds, and the farthest effective action position or the center of the main coverage area reached by the jet in space is further determined. At the same time, based on the air supply coverage target area preset in the design stage, the spatial position or the center point of the area that the terminal should theoretically reach is obtained. Subsequently, the spatial coordinates of the actually identified jet arrival position are compared with the preset coverage position, and the displacement difference between the two is determined in the horizontal and vertical directions respectively. For example, at a certain time section, the design target position is located in the middle of the room, while the actual jet is biased towards one side of the wall and attenuates in advance, so a spatial deviation of 0.8 meters in the horizontal direction and 0.3 meters in the vertical direction can be obtained. Based on the above displacement relationship, a directional deviation description result is formed, namely the jet coverage deviation vector, which is used to characterize the degree and directional characteristics of the jet deviating from the design coverage area.

[0032] After obtaining the jet coverage deviation vectors at multiple consecutive time sections, the deviation results of each time section are arranged in chronological order and recorded sequentially. For example, the deviation vectors corresponding to multiple times such as 10:00:00, 10:00:05, and 10:00:10 are stored in sequence by number, forming a sequence structure with time evolution characteristics. In this process, not only are the deviation direction and offset degree of each time section retained, but the corresponding time identifier is also recorded simultaneously, thereby constructing a continuous trajectory data set that reflects the jet coverage change process. This data set is the jet coverage deviation set, which is essentially used to describe the dynamic offset of the jet coverage position of a certain air conditioning terminal relative to the design target over a period of time. For example, it can reflect the evolutionary trend of the jet gradually attaching to the wall from the initial deviation and continuing to offset.

[0033] S2, based on the jet coverage deviation set, identify the attached jet state, and perform state identification on the air conditioning terminal according to the attached jet state to obtain the attached jet terminal;

[0034] In this embodiment, the attached jet state is identified based on the jet coverage deviation set, and the state of the air conditioning terminal is identified according to the attached jet state to obtain the attached jet terminal, specifically:

[0035] Identify areas not covered by the jet at the air conditioning terminal based on the jet coverage deviation set;

[0036] Extract the geometric boundary of each area not covered by the jet and obtain the air supply jet trajectory of the corresponding air conditioning terminal in that area;

[0037] By tracing the path changes of the air jet after it leaves the air outlet, a set of path changes can be obtained.

[0038] Based on the path variation set, the contact points between the air jet trajectory and obstacles and walls inside the building are identified to obtain the jet attachment point.

[0039] Starting from the point where the jet attaches to the wall, the jet trajectory is traced downstream and the attachment distance and attachment angle of the jet after attachment to the wall are determined to obtain the characteristics of the attached jet.

[0040] Based on the characteristics of wall-attached jets, air conditioning terminals whose jet trajectories continuously adhere to obstacles and walls inside the building and whose attachment distance exceeds a preset distance threshold are designated as attached jet terminals.

[0041] It should be noted that the jet-uncovered area refers to the spatial area within a building where the air conditioning terminal's preset air supply coverage target area is not effectively reached or is insufficiently covered by the jet. In other words, there are gaps or weak coverage between the actual area affected by the jet and the designed coverage area. In the specific identification process, the spatial correspondence between the actual jet arrival location and the preset coverage area at each time segment is first obtained based on the jet coverage deviation set. By comparing the deviation between the actual coverage location and the design target location, areas with significant deviations or insufficient coverage in the horizontal or vertical directions are identified. For example, if a terminal is preset to cover a 1.5m x 1.5m area in the center of a room, but the actual jet only covers 1m x 1m during that time period, then the remaining 0.5m x 1.5m area is identified as the jet-uncovered area. This identification process, combined with data from multiple time segments, can form a time evolution map, clearly defining the location, size, and trend of the jet-uncovered area.

[0042] After identifying the uncovered areas, it is necessary to determine the spatial boundaries of the area, that is, to clarify its four corner positions or outline in the room coordinate system, and use it as the analysis unit.

[0043] For example, if the uncovered area of ​​an air conditioner terminal is rectangular, the boundary can be marked by the coordinates of the four vertices. At the same time, the air jet trajectory corresponding to this area needs to be traced from the air outlet of the air conditioner terminal along the main axis of the jet to the edge point of the actual uncovered area, and the changes of the jet path in space should be recorded. For example, the jet starts from the air outlet with an initial downward angle, deviates from the center line, and begins to be guided and deflected by the wall after 2 meters. This trajectory is collected as the jet trajectory and used to analyze the jet deviation and possible wall adhesion behavior.

[0044] Furthermore, it should be noted that the path variation set refers to the set of records that trace the actual movement trajectory of the jet in space along the main axis of the jet, starting from the air outlet. This set describes the jet's deflection, attenuation, and changes influenced by the surrounding environment. In practice, the jet trajectory is sampled at distance or time steps, for example, recording the jet's position and direction every 0.1 meters or 0.5 seconds. The deflection angle and velocity changes between consecutive sampling points are compared, and these data sequences form the path variation set, thus reflecting the actual movement pattern of the jet in space, including characteristics such as deviation from the design target, deflection guided by the wall, or sinking.

[0045] Furthermore, the jet attachment point refers to the location where the air jet trajectory first contacts an obstacle surface or wall within the building's interior space, usually accompanied by a phenomenon of jet kinetic energy conversion to the wall. During the identification process, the relationship between the concentrated jet direction and the geometric position of the surrounding walls or obstacles is first analyzed. When the jet position approaches the wall and the distance between the jet's main axis and the wall is less than a preset threshold, and the jet direction begins to deflect along the wall, this point can be determined as the attachment point. For example, if a jet contacts a room partition 2.3 meters from the air outlet and slides down the partition, this contact location is recorded as the attachment point, providing a starting point for subsequent jet attachment characteristic analysis.

[0046] Starting from the point of attachment to the wall, the jet is traced downstream along its actual trajectory. By measuring the length of the jet's slide along the obstacle or wall and the change in its angle of deviation from the wall normal, the attachment distance and attachment angle of the jet during the attachment process are obtained, i.e., the characteristics of the attached jet. For example, if a jet slides 1.2 meters along the wall after contacting it, and the angle between the jet's main axis and the wall normal remains within 15°, then the attachment distance is 1.2 meters and the attachment angle is 15°.

[0047] Finally, an attached jet terminal refers to an air conditioning terminal whose airflow trajectory continuously adheres to an obstacle or wall inside the building, and the adhesion distance exceeds a preset threshold. This means that the jet at this terminal cannot freely distribute according to the design target for most of the operating time, but instead slides along the wall, causing localized heat accumulation or insufficient coverage. The specific identification method is to compare the wall-attached jet characteristics of each air conditioning terminal with a preset minimum adhesion distance threshold. If multiple consecutive measurements show that the jet adhesion distance exceeds the threshold and the main axis of the jet does not detach from the wall, then the terminal is identified as an attached jet terminal. For example, if a terminal jet slides along the wall for more than 1.2 meters in multiple time sections, while the preset threshold is 0.8 meters, then the air conditioning terminal is determined to be an attached jet terminal.

[0048] S3, adjust the guiding angle of the attached jet end, and construct the offset mapping between the jet attachment path and the heat island distribution based on the adjustment result;

[0049] In this embodiment, the guiding angle of the attached jet tip is adjusted, and an offset mapping between the jet attachment path and the heat island distribution is constructed based on the adjustment result. Specifically:

[0050] Obtain the current guide angle at the end of the attached jet, and calculate the minimum guide deflection angle required for the jet to detach from the current attached state based on the characteristics of the attached jet, thus obtaining the initial adjustment angle;

[0051] The guide plate at the end of the attached jet is deflected according to the initial adjustment angle, and the change of the jet trajectory after deflection is monitored in real time to obtain the adjusted jet path.

[0052] Data on the distribution of heat islands inside buildings is obtained, and the central location and boundary range of the heat island area are identified to obtain a spatial distribution model of the heat island.

[0053] The adjusted jet path is spatially superimposed with the heat island spatial distribution model, and the spatial overlap rate between the coverage area of ​​the adjusted jet path and the heat island area is calculated.

[0054] Based on the spatial overlap rate, an offset mapping is constructed with the attached jet end as the origin, the adjusted jet path as the first vector, and the center of the heat island region as the second vector, to obtain the offset mapping between the jet attachment path and the heat island distribution.

[0055] It should be noted that the current guide angle at the end of the attached jet refers to the tilt direction and deflection amplitude of the air conditioner's terminal guide plate in its current operating state, used to control the initial direction of the air jet. In actual operation, this can be obtained by measuring the installation angle of the guide plate or reading the current deflection angle recorded by the control device. For example, if a terminal guide plate is deflected horizontally by 30° and tilted vertically downwards by 15°, then this value is the current guide angle. Based on the characteristics of the wall-attached jet, by analyzing the jet attachment distance and attachment angle, the minimum deflection amplitude required for the jet to detach from its current wall-attached state can be evaluated. For example, if a jet slides along the wall for 1.2 meters at a small angle, calculations show that the horizontal deflection needs to be increased by 5° and the vertical deflection by 3° to make the jet detach from the wall in its original direction, thus obtaining the initial adjustment angle.

[0056] After determining the initial adjustment angle, the deflection is adjusted accordingly by driving the guide vane, for example, adjusting the horizontal deflection from 30° to 35° and the vertical deflection from 15° to 18°, thus achieving an initial shift in the jet direction. Simultaneously, during the jet deflection process, real-time measurements of indoor airflow velocity and direction data are required to record the path changes of the jet from the outlet to the target coverage area. The actual arrival position of the deflected jet along its spatial trajectory is continuously sampled to form the adjusted jet path. For example, after an adjustment, if the jet initially slid 1.2 meters along the wall, after adjustment it only adheres to the wall by 0.4 meters and shifts towards the center of the room within the same time period. The adjusted jet path can then reflect the spatial expansion after the jet detaches from the wall.

[0057] Secondly, building interior heat island distribution data refers to the temperature distribution at various locations within a building, obtained through sensors, infrared thermography, or numerical simulations, particularly the spatial coordinates and extent of areas with higher temperatures. By analyzing temperature data, the center location and boundary range of heat island areas are identified. For example, if the temperature in a certain area of ​​an office space is more than 3°C higher than the surrounding area, the coordinates of the center point of that area are the center of the heat island, and the boundary is determined by the spatial contour where the temperature drops to the critical value. When constructing a heat island spatial distribution model, all heat island areas and their boundary information are integrated into a three-dimensional coordinate data set. Simultaneously, the temperature level and spatial shape of each area are labeled, representing the distribution of the heat island within the room in the form of identifiable spatial units, such as forming a model composed of the heat island center, boundary contour, and temperature levels.

[0058] Furthermore, the adjusted jet path is visualized in three-dimensional space and overlaid with a heat island spatial distribution model to analyze the spatial relationship between the jet coverage area and the heat island area. For example, if a jet path at a certain end covers a 1.2m × 1.2m area in the center of a room, while the actual heat island area is 1m × 1m, then the jet coverage rate is the proportion of the heat island area covered by the jet. By comparing each sampling point in the space and calculating the ratio of the number of points where the jet effectively covers the heat island area to the total number of heat island points, the spatial overlap rate can be obtained. This indicator is used to quantify the cooling effect of the jet on the heat island area.

[0059] Finally, the offset mapping between the jet attachment path and the heat island distribution refers to the spatial relationship analysis of the adjusted jet path direction vector and the heat island center pointing vector, with the attached jet end position as the origin. This analysis forms a mapping result characterizing the degree and direction of the jet's deviation from the heat island center. For example, if the attached jet end is located at the air outlet, and the adjusted jet path extends towards the right of the room center, while the heat island center is located 0.6 meters to the left of the jet path, then the jet attachment path has a 0.6-meter offset relative to the heat island distribution. This mapping describes the relative positional relationship between the jet's effect and the heat island location through spatial vector relationships. This guides further adjustments to the airflow angle and optimization of cooling distribution, enabling the jet to more effectively cover the heat island area and achieve balanced temperature control within the building.

[0060] S4. The guide angle at the end of the attached jet is dynamically corrected according to the offset mapping to obtain the corrected guide angle.

[0061] In this embodiment, the guide angle at the end of the attached jet is dynamically corrected according to the offset mapping to obtain the corrected guide angle, specifically:

[0062] Based on the offset mapping, the spatial offset vector between the end point of the adjusted jet path and the center point of the heat island region is extracted, and the direction angle of the spatial offset vector is calculated.

[0063] Obtain the deflection angle of the guide vane at the end of the attached jet, and generate a guide angle correction amount based on the difference between the direction angle of the spatial offset vector and the current deflection angle;

[0064] The guide angle correction is decomposed into horizontal correction components and vertical correction components, and the first control sequence of the guide vane is generated based on the horizontal correction components and vertical correction components.

[0065] The angle of the guide vane is adjusted step by step according to the first control sequence, and the offset mapping is updated in real time after each adjustment to obtain the first offset mapping.

[0066] When the spatial offset vector between the end point of the adjusted jet path in the first offset mapping and the center point of the heat island region is less than the preset offset threshold, the current guiding angle is determined, and the corrected guiding angle is obtained.

[0067] It should be noted that after obtaining the offset mapping, it is necessary to determine the relative position in three-dimensional space between the end point of the adjusted jet path and the center point of the heat island region, i.e., the spatial offset vector. For example, if the end point of an attached jet path is located at room coordinates (3.2, 2.5, 1.1), while the center point of the heat island region is located at (2.8, 2.2, 1.2), then the spatial offset vector between them is the displacement vector from the jet end point towards the center of the heat island. Based on this vector, its direction angle can be further calculated, i.e., the angle between the vector and the horizontal and vertical planes, to describe the direction in which the jet deviates from the center of the heat island. For example, it might deviate 30 degrees to the left in the horizontal plane and 10 degrees higher in the vertical direction.

[0068] Furthermore, the current deflection angle of the guide vane at the end of the attached jet is obtained, including the horizontal deflection and vertical tilt angle, for example, a horizontal deflection of 30° and a vertical deflection of 15°. Then, the direction angle of the spatial offset vector is compared with the current deflection angle of the guide vane, and the difference between the two is calculated. This difference is the guide angle correction amount, which is used to guide the guide vane to adjust in the direction of the jet deviating from the center of the heat island.

[0069] For example, if the horizontal deviation is 30° and the current deflector is 30°, the horizontal correction is 0°; if the vertical deviation is 10° and the current deflection is 15°, the vertical correction is -5°, indicating that the deflector tilt angle needs to be reduced by 5° to improve jet coverage.

[0070] After obtaining the guide angle correction, it is decomposed into a horizontal correction component and a vertical correction component. Each component independently controls the deflection of the guide vane in the corresponding direction. For example, if the horizontal correction is 0° and the vertical correction is -5°, the first control sequence is recorded as maintaining the original horizontal angle of the guide vane and adjusting it downwards by 5°. This control sequence can be generated in a time-step or angle-incrementing manner to ensure smooth adjustment of the guide vane. At the same time, the timestamp corresponding to each action is recorded for continuous execution and monitoring of jet path changes.

[0071] Furthermore, following the first control sequence, the angle of the guide vane is adjusted sequentially. After each adjustment, the spatial offset vector between the jet path end position and the heat island center position is detected, resulting in a new offset mapping, called the first offset mapping. For example, after the first adjustment, if the horizontal offset between the jet path end and the heat island center decreases from 30 cm to 12 cm, and the vertical offset decreases from 10 cm to 4 cm, this offset vector is recorded as the first updated offset mapping. The first offset mapping is used to continuously monitor the correction effect of the jet path, ensuring that the guide vane adjustment can gradually reduce the deviation between the jet and the heat island, achieving dynamic optimization.

[0072] Finally, after continuously adjusting the deflector and updating the offset mapping, when the spatial offset vector length between the end of the jet path and the center of the heat island is lower than the preset offset threshold (e.g., the horizontal offset is no more than 5 cm and the vertical offset is no more than 2 cm), it is determined that the current deflector angle is sufficient to enable the jet to effectively cover the heat island area. The deflector angle at this time is the corrected deflector angle.

[0073] It should be noted that the corrected guide angle refers to the final guide vane angle obtained through offset mapping and step-by-step control adjustment, ensuring that the jet path is highly matched with the spatial position of the heat island, thus providing a reliable basis for subsequent cooling distribution and temperature balance control. For example, if the horizontal angle is kept at 32° and the vertical angle is adjusted to 13°, with the jet tip basically aligned with the center of the heat island, then this guide vane angle is the corrected guide angle.

[0074] S5, adjust the upper limit constraint of the air supply volume at the end of the attached jet according to the offset mapping, and allocate the cooling capacity based on the adjusted upper limit constraint of the air supply volume to obtain the adjusted air supply volume.

[0075] In this embodiment, the upper limit constraint of the air volume at the end of the attached jet is adjusted according to the offset mapping, specifically as follows:

[0076] Based on the offset mapping, the heat load value of the heat island area corresponding to the end of the attached jet is calculated, and the upper limit of the initial air supply volume of the attached jet end is determined according to the heat load value.

[0077] Obtain the pressure data of the air supply duct at the end of the attached jet, and calculate the maximum allowable air supply volume at the end of the attached jet based on the air supply duct pressure data to obtain the upper limit of the physical air supply volume.

[0078] Compare the initial upper limit of air supply volume with the upper limit of physical air supply volume, and use the smaller of the two as the adjusted upper limit constraint of air supply volume.

[0079] It should be noted that after obtaining the offset mapping, the range of the heat island area covered by the jet path at the end of the attached jet can be determined, and the required cooling capacity, i.e., the heat load value, of the area can be estimated based on the temperature data and spatial volume of the area.

[0080] For example, if the adjusted jet path of an attached jet terminal covers a heat island area of ​​approximately 2.5 square meters, and the average temperature of this area is 3°C higher than the set comfort temperature, then based on the area volume and the specific heat characteristics of the air, it can be calculated that this heat island area requires approximately 1200 watts of cooling capacity to achieve temperature equilibrium. This heat load value provides basic data for evaluating the cooling capacity distribution of the attached jet terminal, ensuring that the air supply volume matches the heat island's demand.

[0081] Based on the aforementioned heat load value, the required cooling capacity can be converted into a corresponding air supply volume and set as the upper limit of the initial air supply volume of the attached jet terminal. For example, if a heat island area requires 1200 watts of cooling capacity, and the supply air temperature difference of the terminal air conditioner is 6°C, the calculated upper limit of the initial air supply volume of the terminal is 200 cubic meters per hour. This value serves as the maximum air supply capacity that the guide vane and fan can adjust under the premise of meeting the cooling demand of the heat island, providing an initial constraint for subsequent cooling capacity allocation.

[0082] Furthermore, by installing a pressure sensor inside the air supply duct, the duct pressure at the end of the attached jet can be obtained in real time, for example, if the duct pressure is measured to be 300 Pa. Combining the fan performance characteristics and duct resistance characteristics, the maximum allowable air volume at this end under the current pressure conditions can be estimated. For example, if the fan's maximum air supply capacity at this pressure is 180 cubic meters per hour, then this value is the upper limit of the physical air supply volume, used to prevent fan overload or duct blockage due to insufficient duct pressure leading to excessive air supply volume.

[0083] Finally, the initial upper limit of the air supply volume attached to the jet terminal is compared with the physical upper limit of the air supply volume, and the smaller value is selected as the final constraint. For example, if the initial upper limit of the air supply volume is 200 cubic meters per hour and the physical upper limit of the air supply volume is 180 cubic meters per hour, then the adjusted upper limit of the air supply volume is 180 cubic meters per hour. The adjusted upper limit of the air supply volume constraint means that, while ensuring the cooling demand in the heat island area, it does not exceed the maximum air supply volume that the physical capacity of the fan and pipeline can withstand. This provides an operationally achievable upper limit for subsequent cooling distribution, ensuring that the air conditioning terminal can meet the temperature balance requirements without experiencing air supply overload or abnormal duct pressure.

[0084] In this embodiment, cooling capacity is allocated based on the adjusted upper limit constraint of the air supply volume to obtain the adjusted air supply volume, specifically as follows:

[0085] The difference between the actual air volume at the end of the attached jet and the adjusted upper limit constraint of the air volume is calculated to obtain the first cooling capacity value;

[0086] Identify other air conditioning terminals inside the building besides the attached jet terminals as detached jet terminals, and calculate the cooling demand gap for each detached jet terminal;

[0087] The first cooling capacity value is allocated to each jet exit terminal according to the proportion of the cooling capacity demand gap of each jet exit terminal to the total cooling capacity demand gap of all jet exit terminals, thus obtaining the initial allocated air volume.

[0088] Obtain the resistance characteristic data of each air supply duct that exits the jet end, and adjust the initial allocated air supply volume based on the air supply duct resistance characteristic data to obtain the adjusted air supply volume.

[0089] It should be noted that the actual airflow at the attached jet terminal refers to the airflow rate delivered by the terminal under its current operating state, while the adjusted upper limit constraint on the airflow rate is the maximum allowable airflow rate delivered by the terminal, determined based on heat island offset mapping, guide angle correction, and duct pressure characteristics. When the actual airflow rate is less than the allowable upper limit, the excess allocable cooling capacity is the first cooling capacity value.

[0090] For example, if the actual airflow of a certain attached jet terminal is 90 cubic meters per hour, while the adjusted upper limit of the airflow is 100 cubic meters per hour, the difference is 10 cubic meters per hour. The cooling capacity corresponding to this 10 cubic meters per hour airflow is the first cooling capacity value. The first cooling capacity value refers to the remaining cooling capacity that the attached jet terminal can use to supplement the cooling capacity demand of other air conditioning terminals after meeting its airflow constraints. It is an adjustable cooling capacity for achieving a balanced temperature distribution inside the building.

[0091] When initially allocating cooling capacity, air conditioning terminals other than those with attached jets need to be identified as detached jet terminals. These terminals' air jets are not attached to any obstacles or walls within the building and can freely cover the room area. The cooling capacity gap for each detached jet terminal refers to the additional cooling capacity required to bring its covered area to the design temperature under the current air supply conditions. For example, if a building has four detached jet terminals, the differences between the indoor temperature and the design temperature correspond to additional cooling capacity requirements of 5, 8, 6, and 7 kilowatts, respectively. These values ​​constitute the cooling capacity gap for each detached jet terminal and are used to guide the allocation of remaining cooling capacity.

[0092] Furthermore, the proportion of the cooling demand gap at each exit jet terminal to the total cooling demand gap of all exit jet terminals is used as the allocation weight, and the first cooling value is proportionally allocated to each exit jet terminal. For example, if the total cooling demand gap of the four exit jet terminals is 26 kW, and the gap at one terminal is 5 kW, then its proportion is 19.2%; if the first cooling value is 10 kW, then the cooling value allocated to that terminal is approximately 1.92 kW. After allocating the first cooling value to each exit jet terminal in this way, the initial allocated air volume is obtained. This initial allocated air volume is the basis for subsequent fine-tuning based on duct resistance and valve characteristics, used to achieve balanced temperature control inside the building.

[0093] In this embodiment, the resistance characteristic data of each air supply duct detaching from the jet end is obtained, and the initial allocated air supply volume is adjusted based on the air supply duct resistance characteristic data to obtain the adjusted air supply volume, specifically:

[0094] Obtain the air supply duct resistance characteristic data for each jet exiting end, and calculate the air supply pressure change value for each jet exiting end after initial allocation based on the initial allocated air volume and air supply duct resistance characteristic data.

[0095] The change value of the air supply pressure at each jet exit point is compared with a preset pressure fluctuation threshold, and the first jet exit point is identified based on the comparison results.

[0096] Calculate the difference between the air pressure change value at each first detached jet end and the preset pressure fluctuation threshold, and adjust the valve opening of the branch where the first detached jet end is located according to the difference to obtain the valve adjustment amount;

[0097] The first air volume at each first exit jet end is recalculated based on the valve adjustment amount, and the initial allocated air volume is adjusted based on the first air volume to obtain the adjusted air volume.

[0098] It should be noted that the resistance characteristic data of each air supply duct detached from the jet terminal refers to the pressure loss characteristics of the duct connected to that terminal under different air supply volumes, including parameters such as duct length, number of bends, vent resistance, and local resistance. These data can reflect the changes in resistance during the airflow process from the fan to the air conditioning terminal.

[0099] For example, a 12-meter-long duct at the end of a jet stream, containing three right-angle bends and one air outlet resistance unit, has a resistance characteristic showing a pressure drop of 40 Pa when the air volume is 100 cubic meters per hour. Based on the initial allocated air volume and resistance characteristic data, the change in air pressure at the end after initial allocation can be estimated. For example, if the initial allocated air volume is 120 cubic meters per hour, the corresponding duct pressure drop increases to 55 Pa, thus yielding the change in air pressure at the end.

[0100] Furthermore, the pressure change value of each jet-delayed terminal is compared with a pre-set pressure fluctuation threshold to determine whether the terminal is within the allowable pressure change range. For example, if the pressure fluctuation threshold is set to ±10 Pa, when the actual pressure change of a jet-delayed terminal is 55 Pa, exceeding the allowable range, that terminal is identified as the first jet-delayed terminal. The first jet-delayed terminal refers to a terminal whose pressure exceeds the allowable range after the initial airflow allocation due to pipe resistance or improper valve matching. Further correction is required through valve adjustment to ensure the accuracy of airflow and cooling capacity distribution.

[0101] For each first jet exit point, the difference between the actual supply air pressure change and the pressure fluctuation threshold is calculated. For example, if the terminal pressure change is 55 Pa and the threshold is 50 Pa, the difference is 5 Pa. Based on this difference, the valve opening of the corresponding branch is adjusted, appropriately increasing or decreasing the duct resistance to restore the terminal pressure to the allowable range. For example, by fine-tuning the valve opening, the pressure is reduced from 55 Pa to 50 Pa, thus obtaining the valve adjustment amount.

[0102] After obtaining the valve adjustment amount, the air supply volume of the first jet exit terminal is recalculated. For example, after the valve is fine-tuned, the originally allocated air supply volume of 120 cubic meters per hour is adjusted to 115 cubic meters per hour. The first air supply volume of each first jet exit terminal refers to the actual air flow that the terminal can stably and safely deliver after the valve opening is adjusted. This not only meets the pipeline pressure requirements but also provides an operational data basis for the distribution of cooling capacity to other terminals in the building.

[0103] Finally, the overall air distribution scheme is modified using the initial air volume of each first jet exit terminal. Any portion of the initial allocation exceeding the actual available capacity is adjusted. Simultaneously, the remaining cooling capacity is redistributed based on the cooling demand of other jet exit terminals within the building and the pipe resistance characteristics. For example, if there are five jet exit terminals in the building, three of which are located in the first jet exit terminal list, and their initial air volumes after valve adjustment are 115, 120, and 110 cubic meters per hour respectively, the overall air distribution is adjusted according to these values ​​to ensure the total cooling capacity meets the design requirements, thus obtaining the adjusted air volume.

[0104] S6 generates air conditioning terminal control commands based on the corrected airflow angle and adjusted air volume, and performs temperature control based on the air conditioning terminal control commands.

[0105] In this embodiment, an air conditioning terminal control command is generated based on the corrected airflow angle and the adjusted air supply volume, and temperature control is performed based on the air conditioning terminal control command, specifically as follows:

[0106] The corrected guide angle is analyzed into a motor control pulse sequence for the guide plate to obtain the first control command;

[0107] The adjusted air volume is analyzed into the operating frequency adjustment signal of the variable frequency fan to obtain the second control command;

[0108] The first control command and the second control command are timestamped and then encapsulated into control commands for the air conditioning terminal.

[0109] Obtain control commands from all air conditioning terminals inside the building, and generate a set of control commands based on the geographical location of the air conditioning terminals and the preset network topology;

[0110] The control command set is sent to the corresponding air conditioning terminal for temperature control.

[0111] It should be noted that the corrected guide angle refers to the final angle of the guide vane at the end of the attached jet, determined after offset mapping and deviation correction. This angle is used to guide the air jet to accurately cover the heat island area. When this angle is resolved into a guide vane motor control pulse sequence, the target angle is converted into the corresponding number of pulse signals and pulse intervals based on the response characteristics of the guide vane drive mechanism, so as to control the guide vane to rotate accurately in the horizontal and vertical directions.

[0112] For example, if the corrected guide angle at the end of a certain attached jet is 15 degrees horizontal deflection and 10 degrees vertical deflection, then the corresponding motor drive needs to output a certain number of pulse sequences to achieve this angle. The first control command refers to the specific operation command used to adjust the angle of the guide plate, including the number of pulses, the pulse frequency, and their sequence. Through this command, the adjustment of the guide plate can be precisely controlled to ensure that the jet path meets the design requirements.

[0113] Secondly, the adjusted air volume refers to the airflow value determined after adjusting the heat load at the attached jet terminal and the air supply duct pressure. When interpreting this as a variable frequency fan operating frequency adjustment signal, the target air volume needs to be correlated with the fan characteristic curve. The desired air volume is achieved by changing the frequency of the fan motor. For example, if the adjusted air volume at a certain attached jet terminal is 120 cubic meters per hour, then by consulting the fan performance curve and setting the corresponding motor frequency to 50 Hz, the fan can deliver the target air volume. The second control command refers to the adjustment signal for the variable frequency fan, including the fan operating frequency, start / stop control, and operating mode, used to ensure that the terminal air volume is consistent with the design requirements.

[0114] In actual control, it is necessary to ensure that the adjustment of the deflector angle and the regulation of the air supply volume are coordinated. To this end, a unified timestamp is added to the first and second control commands to synchronize the deflector action with the fan operation. For example, the start time of the deflector pulse sequence and the start time of the fan frequency adjustment are uniformly set to the same moment. Then, the two types of commands are encapsulated into a control command for the air conditioning terminal, which includes deflector action information and fan operation information, so that the terminal equipment executes them sequentially, ensuring that the air jet accurately reaches the target area.

[0115] Furthermore, the control commands generated by each air conditioning terminal within the building are organized and categorized according to their geographical location and preset network topology. For example, commands from terminals located in rooms on the west side of the first floor are grouped together, while commands from terminals on the east side of the second floor are grouped into another set. Through the network topology, each control command is matched with the communication node of the corresponding air conditioning terminal to form a complete set of control commands, facilitating centralized distribution and unified management. This ensures that all terminals respond simultaneously and work together to achieve temperature balance within the building.

[0116] Finally, the control command set is sent to each terminal device through the communication interface of the air conditioning terminal, and each terminal performs the corresponding operation according to the received command. For example, after receiving the encapsulated control command, the air conditioning terminal in the west room on the first floor first adjusts the air guide plate to the target angle according to the first control command, and then starts the variable frequency fan to the set air volume according to the second control command, so that the air jet in the room covers the heat island area and achieves the preset temperature target. Through the coordinated operation of all air conditioning terminals, the temperature distribution inside the building is evenly adjusted, ensuring the comfort and energy efficiency of the indoor thermal environment.

[0117] Example 2, Figure 2 The present invention provides a building interior temperature equalization control system based on spatial heat island distribution, comprising a data acquisition module, a status recognition module, a mapping construction module, a flow correction module, a cooling capacity distribution module, and a temperature control module.

[0118] The data acquisition module is used to acquire the air supply parameters and spatial airflow distribution data of each air conditioning terminal inside the building, and to construct the jet coverage deviation set based on the temporal correspondence between the air supply parameters and the spatial airflow distribution data.

[0119] The status recognition module is used to identify the attached jet status based on the jet coverage deviation set, and to identify the status of the air conditioning terminal according to the attached jet status to obtain the attached jet terminal.

[0120] The mapping construction module is used to adjust the guide angle of the attached jet end and construct an offset mapping between the jet attachment path and the heat island distribution based on the adjustment result.

[0121] The flow correction module is used to dynamically correct the flow angle at the end of the attached jet according to the offset mapping, so as to obtain the corrected flow angle.

[0122] The cooling capacity distribution module is used to adjust the upper limit constraint of the air volume at the end of the attached jet according to the offset mapping, and to distribute the cooling capacity based on the adjusted upper limit constraint of the air volume to obtain the adjusted air volume.

[0123] The temperature control module is used to generate air conditioning terminal control commands based on the corrected airflow angle and adjusted air volume, and to perform temperature control based on the air conditioning terminal control commands.

[0124] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, in the form of a computer program product.

[0125] Those skilled in the art will recognize that the modules and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0126] In addition, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module.

[0127] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0128] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for controlling internal building temperature balance based on spatial heat island distribution, characterized in that, Includes the following steps: Obtain the air supply parameters and spatial airflow distribution data of each air conditioning terminal inside the building, and construct the jet coverage deviation set based on the temporal correspondence between the air supply parameters and the spatial airflow distribution data; The attached jet state is identified based on the jet coverage deviation set, and the state of the air conditioning terminal is identified based on the attached jet state to obtain the attached jet terminal. The guide angle of the attached jet is adjusted, and an offset mapping between the jet attachment path and the heat island distribution is constructed based on the adjustment results. The guide angle at the end of the attached jet is dynamically corrected based on the offset mapping to obtain the corrected guide angle. The upper limit constraint of the air supply volume at the end of the attached jet is adjusted according to the offset mapping, and the cooling capacity is allocated based on the adjusted upper limit constraint of the air supply volume to obtain the adjusted air supply volume. The air conditioning terminal control command is generated based on the corrected airflow angle and the adjusted air supply volume, and the temperature is controlled based on the air conditioning terminal control command.

2. The method for equalizing building interior temperature based on spatial heat island distribution according to claim 1, characterized in that, The process involves acquiring the air supply parameters and spatial airflow distribution data for each air conditioning terminal inside the building, and constructing a jet coverage deviation set based on the temporal correspondence between the air supply parameters and the spatial airflow distribution data. Specifically: The air supply velocity, air supply temperature, and air outlet louver angle of each air conditioning terminal in the building are obtained at multiple continuous time sections to obtain the air supply parameters of each air conditioning terminal. At the same time, the spatial airflow velocity distribution field and spatial temperature distribution field in the corresponding air supply area of ​​each air conditioning terminal are obtained to obtain the spatial airflow distribution data of each air conditioning terminal. Align the air supply parameters and spatial airflow distribution data at each time segment with the timestamps to obtain the coupled state unit at each time segment; Extract the spatial coordinate deviation between the actual arrival position of the air jet and the preset design coverage position in each coupled state unit to obtain the jet coverage deviation vector under each time section; The jet coverage deviation vectors of all time sections are concatenated in chronological order to construct the jet coverage deviation set for each air conditioning terminal.

3. The method for equalizing building interior temperature based on spatial heat island distribution according to claim 2, characterized in that, The process involves identifying the attached jet state based on the jet coverage offset set, and then performing state identification on the air conditioning terminal based on the attached jet state to obtain the attached jet terminal. Specifically: Identify areas not covered by the jet at the air conditioning terminal based on the jet coverage deviation set; Extract the geometric boundary of each area not covered by the jet and obtain the air supply jet trajectory of the corresponding air conditioning terminal in that area; By tracing the path changes of the air jet after it leaves the air outlet, a set of path changes can be obtained. Based on the path variation set, the contact points between the air jet trajectory and obstacles and walls inside the building are identified to obtain the jet attachment point. Starting from the point where the jet attaches to the wall, the jet trajectory is traced downstream and the attachment distance and attachment angle of the jet after attachment to the wall are determined to obtain the characteristics of the attached jet. Based on the characteristics of wall-attached jets, air conditioning terminals whose jet trajectories continuously adhere to obstacles and walls inside the building and whose attachment distance exceeds a preset distance threshold are designated as attached jet terminals.

4. The method for equalizing building interior temperature based on spatial heat island distribution according to claim 3, characterized in that, The adjustment of the guide angle at the end of the attached jet, and the construction of an offset mapping between the jet attachment path and the heat island distribution based on the adjustment result, specifically involves: Obtain the current guide angle at the end of the attached jet, and calculate the minimum guide deflection angle required for the jet to detach from the current attached state based on the characteristics of the attached jet, thus obtaining the initial adjustment angle; The guide plate at the end of the attached jet is deflected according to the initial adjustment angle, and the change of the jet trajectory after deflection is monitored in real time to obtain the adjusted jet path. Data on the distribution of heat islands inside buildings is obtained, and the central location and boundary range of the heat island area are identified to obtain a spatial distribution model of the heat island. The adjusted jet path is spatially superimposed with the heat island spatial distribution model, and the spatial overlap rate between the coverage area of ​​the adjusted jet path and the heat island area is calculated. Based on the spatial overlap rate, an offset mapping is constructed with the attached jet end as the origin, the adjusted jet path as the first vector, and the center of the heat island region as the second vector, to obtain the offset mapping between the jet attachment path and the heat island distribution.

5. The method for equalizing building interior temperature based on spatial heat island distribution according to claim 4, characterized in that, The dynamic correction of the guide angle at the end of the attached jet based on the offset mapping to obtain the corrected guide angle is as follows: Based on the offset mapping, the spatial offset vector between the end point of the adjusted jet path and the center point of the heat island region is extracted, and the direction angle of the spatial offset vector is calculated. Obtain the deflection angle of the guide vane at the end of the attached jet, and generate a guide angle correction amount based on the difference between the direction angle of the spatial offset vector and the current deflection angle; The guide angle correction is decomposed into horizontal correction components and vertical correction components, and the first control sequence of the guide vane is generated based on the horizontal correction components and vertical correction components. The angle of the guide vane is adjusted step by step according to the first control sequence, and the offset mapping is updated in real time after each adjustment to obtain the first offset mapping. When the spatial offset vector between the end point of the adjusted jet path in the first offset mapping and the center point of the heat island region is less than the preset offset threshold, the current guiding angle is determined, and the corrected guiding angle is obtained.

6. The method for equalizing building interior temperature based on spatial heat island distribution according to claim 5, characterized in that, The adjustment of the upper limit constraint of the air volume at the end of the attached jet according to the offset mapping is specifically as follows: Based on the offset mapping, the heat load value of the heat island area corresponding to the end of the attached jet is calculated, and the upper limit of the initial air supply volume of the attached jet end is determined according to the heat load value. Obtain the pressure data of the air supply duct at the end of the attached jet, and calculate the maximum allowable air supply volume at the end of the attached jet based on the air supply duct pressure data to obtain the upper limit of the physical air supply volume. Compare the initial upper limit of air supply volume with the upper limit of physical air supply volume, and use the smaller of the two as the adjusted upper limit constraint of air supply volume.

7. The method for equalizing building interior temperature based on spatial heat island distribution according to claim 6, characterized in that, The process of allocating cooling capacity based on the adjusted upper limit constraint of the supply air volume to obtain the adjusted supply air volume is as follows: The difference between the actual air volume at the end of the attached jet and the adjusted upper limit constraint of the air volume is calculated to obtain the first cooling capacity value; Identify other air conditioning terminals inside the building besides the attached jet terminals as detached jet terminals, and calculate the cooling demand gap for each detached jet terminal; The first cooling capacity value is allocated to each jet exit terminal according to the proportion of the cooling capacity demand gap of each jet exit terminal to the total cooling capacity demand gap of all jet exit terminals, thus obtaining the initial allocated air volume. Obtain the resistance characteristic data of each air supply duct that exits the jet end, and adjust the initial allocated air supply volume based on the air supply duct resistance characteristic data to obtain the adjusted air supply volume.

8. The method for equalizing building interior temperature based on spatial heat island distribution according to claim 7, characterized in that, The process involves acquiring the resistance characteristic data of each air supply duct detached from the jet end, and adjusting the initial allocated air supply volume based on the air supply duct resistance characteristic data to obtain the adjusted air supply volume. Specifically: Obtain the air supply duct resistance characteristic data for each jet exiting end, and calculate the air supply pressure change value for each jet exiting end after initial allocation based on the initial allocated air volume and air supply duct resistance characteristic data. The change value of the air supply pressure at each jet exit point is compared with a preset pressure fluctuation threshold, and the first jet exit point is identified based on the comparison results. Calculate the difference between the air pressure change value at each first detached jet end and the preset pressure fluctuation threshold, and adjust the valve opening of the branch where the first detached jet end is located according to the difference to obtain the valve adjustment amount; The first air volume at each first exit jet end is recalculated based on the valve adjustment amount, and the initial allocated air volume is adjusted based on the first air volume to obtain the adjusted air volume.

9. The method for equalizing building interior temperature based on spatial heat island distribution according to claim 8, characterized in that, The process of generating air conditioning terminal control commands based on the corrected airflow angle and adjusted air volume, and then performing temperature control based on these commands, specifically involves: The corrected guide angle is analyzed into a motor control pulse sequence for the guide plate to obtain the first control command; The adjusted air volume is analyzed into the operating frequency adjustment signal of the variable frequency fan to obtain the second control command; The first control command and the second control command are timestamped and then encapsulated into control commands for the air conditioning terminal. Obtain control commands from all air conditioning terminals inside the building, and generate a set of control commands based on the geographical location of the air conditioning terminals and the preset network topology; The control command set is sent to the corresponding air conditioning terminal for temperature control.

10. A building interior temperature equalization control system based on spatial heat island distribution, applied to the building interior temperature equalization control method based on spatial heat island distribution as described in any one of claims 1-9, characterized in that, It includes a data acquisition module, a status recognition module, a mapping construction module, a flow correction module, a cooling capacity distribution module, and a temperature control module. The data acquisition module is used to acquire the air supply parameters and spatial airflow distribution data of each air conditioning terminal inside the building, and to construct the jet coverage deviation set based on the temporal correspondence between the air supply parameters and the spatial airflow distribution data. The status recognition module is used to identify the attached jet status based on the jet coverage deviation set, and to identify the status of the air conditioning terminal according to the attached jet status to obtain the attached jet terminal. The mapping construction module is used to adjust the guide angle of the attached jet end and construct an offset mapping between the jet attachment path and the heat island distribution based on the adjustment result. The guide correction module is used to dynamically correct the guide angle of the attached jet end according to the offset mapping to obtain the corrected guide angle. The cooling capacity distribution module is used to adjust the upper limit constraint of the air volume at the end of the attached jet according to the offset mapping, and to distribute the cooling capacity based on the adjusted upper limit constraint of the air volume to obtain the adjusted air volume. The temperature control module is used to generate air conditioning terminal control commands based on the corrected airflow angle and adjusted air volume, and to perform temperature control based on the air conditioning terminal control commands.

Images