Ventilation adjustment method based on indoor and outdoor meteorological data linkage

Abstract

The application relates to the technical field of intelligent building environment control, and discloses a ventilation regulation method based on indoor and outdoor meteorological data linkage. Indoor and outdoor temperature and humidity data are collected at the same sampling time, and then humidity normalization, temperature benchmark construction, indoor and outdoor wet-bulb potential temperature construction, condensation risk difference calculation, moisture-proof ventilation permission formation, ventilation execution amount generation, ventilation state coding and instruction output are sequentially carried out, the indoor and outdoor temperature and humidity states are converted into comparable comprehensive states, and ventilation opening degree, fan frequency, state grade and execution time length are generated according to the condensation risk, so that the problem that single humidity or timed ventilation cannot simultaneously consider ventilation and moisture-proof is solved, and the coordination and executability of ventilation regulation are improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent building environmental control technology, specifically a ventilation regulation method based on the linkage of indoor and outdoor meteorological data. Background Technology

[0002] In the field of building environmental control technology, ventilation is commonly used to improve indoor air quality, reduce moisture buildup, and maintain basic comfort in living spaces. For basements, storage rooms, equipment rooms, rooms along exterior walls, and seasonally high-humidity areas, the indoor environment is easily affected by changes in outdoor temperature and humidity over extended periods. If the ventilation method is not chosen appropriately, the incoming outdoor air may not only fail to reduce humidity but could also increase the probability of condensation on indoor surfaces, leading to problems such as damp walls, wet components, mold growth on materials, and equipment damage.

[0003] In existing technologies, common ventilation control methods mainly include timed ventilation, manual start / stop, start / stop based on indoor single-point temperature and humidity thresholds, and simplified control based on outdoor single meteorological parameters. Timed ventilation operates the ventilation device according to a preset time period, which is simple in structure but does not consider real-time differences between indoor and outdoor weather conditions, making it difficult to adapt to rapid changes in outdoor temperature and humidity. Manual start / stop relies on the experience and judgment of management personnel, and the control results are greatly affected by subjective factors, resulting in poor continuity and consistency. While control based on indoor single-point temperature and humidity thresholds can reflect the current indoor state, it does not incorporate the potential changes in humidity and heat caused by the introduction of outdoor air into the unified calculation, leading to a situation where ventilation is activated only when the indoor humidity is high, which can easily exacerbate the risk of indoor condensation when the outdoor air is more humid and temperature conditions are unfavorable. Although the linkage control method based on outdoor single meteorological parameters incorporates some outdoor information, it usually only makes judgments based on outdoor temperature or humidity, lacking a comprehensive characterization of the coupling relationship between indoor and outdoor temperature and humidity, and making it difficult to accurately reflect the actual impact of ventilation behavior on indoor moisture control targets. Furthermore, existing technologies generally suffer from a disconnect between the degree of ventilation permission and the amount of execution at the execution level. That is, there is a lack of a unified mapping relationship between the control logic and the opening degree of the ventilation vents and the operating intensity of the fan, resulting in inconsistent control actions and unclear boundaries under different risk conditions, making it difficult to take into account both moisture protection and ventilation needs.

[0004] Therefore, this case aims to propose a ventilation regulation method based on the linkage of indoor and outdoor meteorological data. The method involves linking indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity at the same sampling time. First, humidity and temperature are converted into comparable dimensional states. Then, indoor and outdoor humid thermal potentials are constructed separately. The difference between the two is used to characterize the condensation risk that may be brought by the outside air entering the room, thereby forming a moisture-proof ventilation permit. The moisture-proof ventilation permit is then converted into the controlled ventilation opening, the controlled ventilation fan operating frequency, the ventilation status level, and the single execution duration, ultimately forming an executable ventilation regulation command set. Summary of the Invention

[0005] This invention provides a ventilation regulation method based on the linkage of indoor and outdoor meteorological data, which helps to solve the problems mentioned in the background art.

[0006] This invention provides the following technical solution: a ventilation control method based on the linkage of indoor and outdoor meteorological data, comprising: Indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity are collected at the same sampling time. The indoor and outdoor relative humidity are normalized to form dimensionless indoor and outdoor humidity values. Based on the indoor and outdoor air temperatures, a double-ended low temperature reference, a double-ended high temperature reference, a temperature expansion value, an indoor temperature location value, and an outdoor temperature location value are formed. The indoor temperature location quantity is exponentially extended to form the indoor temperature extension quantity. The indoor dimensionless humidity quantity is combined with the indoor temperature extension quantity to form the indoor humid heat potential. The outdoor temperature location quantity is exponentially extended to form the outdoor temperature extension quantity. The outdoor dimensionless humidity quantity is combined with the outdoor temperature extension quantity to form the outdoor humid heat potential. The difference between the outdoor and indoor humid thermal potentials is calculated to form the condensation risk difference. The positive truncation of the condensation risk difference is extracted to form the positive condensation risk vector. By comparing the indoor and outdoor humid thermal potentials, the risk normalization upper bound is formed. Based on the condensation risk difference, the positive vector of condensation risk, and the risk normalization upper bound, the moisture-proof ventilation permit degree is calculated. Based on the moisture-proof ventilation permit degree, the controlled ventilation opening degree and the controlled ventilation fan operating frequency are generated, and the controlled ventilation opening degree and the controlled ventilation fan operating frequency are used as ventilation execution quantities; Based on the discrete coding of moisture-proof ventilation permit degree, a ventilation status level is generated, and the single execution duration is calculated based on the ventilation status level to form a status command; The controlled ventilation opening, the operating frequency of the controlled ventilation fan, the ventilation status level, and the single execution duration are combined into a ventilation adjustment command group, and the ventilation adjustment command group is executed according to the single execution duration in the ventilation adjustment command group.

[0007] Optionally, the step of collecting indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity at the same sampling time, normalizing the indoor and outdoor relative humidity to form dimensionless indoor and outdoor humidity values, and forming a dual-end low-temperature benchmark, a dual-end high-temperature benchmark, a temperature expansion quantity, an indoor temperature location quantity, and an outdoor temperature location quantity based on the indoor and outdoor air temperatures, specifically including: At the same sampling time, indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity were collected at predetermined indoor and outdoor sampling points to obtain four meteorological data. Branch normalization is performed on the indoor relative humidity. When the indoor relative humidity is less than 0, the dimensionless humidity value is taken as 0. When the indoor relative humidity is greater than or equal to 0 and less than or equal to 100, the ratio of the indoor relative humidity to 100 is taken as the dimensionless humidity value. When the indoor relative humidity is greater than 100, the dimensionless humidity value is taken as 1. Branch normalization is performed on the outdoor relative humidity. When the outdoor relative humidity is less than 0, the outdoor dimensionless humidity value is taken as 0. When the outdoor relative humidity is greater than or equal to 0 and less than or equal to 100, the ratio of the outdoor relative humidity to 100 is taken as the outdoor dimensionless humidity value. When the outdoor relative humidity is greater than 100, the outdoor dimensionless humidity value is taken as 1. The indoor and outdoor air temperatures are extracted by end values. The lower value of the indoor and outdoor air temperatures is used as the dual-end low temperature baseline, and the higher value of the indoor and outdoor air temperatures is used as the dual-end high temperature baseline. The result of subtracting the dual-end low temperature baseline from the dual-end high temperature baseline and adding 1 is used as the temperature expansion quantity. Based on the dual-end low-temperature baseline and the temperature expansion, the indoor air temperature and outdoor air temperature are respectively processed into dimensionless values. The ratio of the indoor air temperature minus the dual-end low-temperature baseline to the temperature expansion is used as the indoor temperature location value, and the ratio of the outdoor air temperature minus the dual-end low-temperature baseline to the temperature expansion is used as the outdoor temperature location value.

[0008] Optionally, the indoor temperature location quantity is exponentially stretched to form an indoor temperature stretch quantity, and the indoor dimensionless humidity quantity is combined with the indoor temperature stretch quantity to form an indoor humid heat potential, specifically including: An exponential extension is performed on the indoor temperature location quantity, with the natural constant as the base and the indoor temperature location quantity as the exponent, to form the indoor temperature extension quantity; Multiply the dimensionless indoor humidity by the indoor temperature expansion to form the indoor humid thermal potential.

[0009] Optionally, the process of exponentially stretching the outdoor temperature location quantity to form an outdoor temperature stretch quantity, and combining the outdoor dimensionless humidity quantity with the outdoor temperature stretch quantity to form an outdoor humid thermal potential, specifically includes: An exponential extension is performed on the outdoor temperature location quantity, with the natural constant as the base and the outdoor temperature location quantity as the exponent, to form the outdoor temperature extension quantity; The outdoor dimensionless humidity is multiplied by the outdoor temperature extension to form the outdoor humid thermal potential.

[0010] Optionally, the step of calculating the difference between outdoor and indoor humid thermal potentials to form a condensation risk difference, positively truncating the condensation risk difference to form a positive condensation risk vector, and comparing indoor and outdoor humid thermal potentials to form a risk normalization upper bound, specifically includes: Subtracting the indoor humidity and heat potential from the outdoor humidity and heat potential results in a lower risk of condensation. A positive cutoff is performed on the condensation risk difference. When the condensation risk difference is less than or equal to 0, the positive vector of condensation risk is set to 0. When the condensation risk difference is greater than 0, the current value of the condensation risk difference is taken as the positive vector of condensation risk. Upper bounds are extracted for indoor and outdoor humid thermal potentials. When the indoor humid thermal potential is greater than or equal to the outdoor humid thermal potential, the indoor humid thermal potential is taken as the risk normalization upper bound. When the indoor humid thermal potential is less than the outdoor humid thermal potential, the outdoor humid thermal potential is taken as the risk normalization upper bound.

[0011] Optionally, the calculation of the moisture-proof ventilation permit degree based on the condensation risk difference, the positive vector of condensation risk, and the risk normalization upper bound specifically includes: When the condensation risk difference is less than or equal to 0, the moisture-proof ventilation allowance is taken as 1; When the condensation risk difference is greater than 0, calculate the ratio of the positive vector of condensation risk to the upper limit of risk normalization, and then subtract the ratio of the positive vector of condensation risk to the upper limit of risk normalization from 1 to form the moisture-proof ventilation permittivity. When the condensation risk difference is greater than 0, calculate the ratio of indoor humid thermal potential to outdoor humid thermal potential, and use the ratio of indoor humid thermal potential to outdoor humid thermal potential as the simplified result of the moisture-proof ventilation permit.

[0012] Optionally, the step of mapping the controlled ventilation opening degree and the controlled ventilation fan operating frequency based on the moisture-proof ventilation permit degree, and using the controlled ventilation opening degree and the controlled ventilation fan operating frequency as ventilation execution quantities, specifically includes: When the moisture-proof ventilation allowance is greater than or equal to 0 and less than 1 / 4, the controlled ventilation opening is set to 0. When the moisture-proof ventilation allowance is greater than or equal to 1 / 4 and less than or equal to 1, the controlled ventilation opening is set to the current value of the moisture-proof ventilation allowance. Using the rated frequency of the controlled ventilation fan as the frequency reference, when the moisture-proof ventilation allowable degree is greater than or equal to 0 and less than 1 / 4, the operating frequency of the controlled ventilation fan is set to 0. When the moisture-proof ventilation allowable degree is greater than or equal to 1 / 4 and less than or equal to 1, the rated frequency of the controlled ventilation fan is multiplied by the moisture-proof ventilation allowable degree to form the operating frequency of the controlled ventilation fan. The controlled ventilation opening degree is combined with the controlled ventilation fan operating frequency to form the ventilation execution quantity.

[0013] Optionally, the step of generating a ventilation status level based on the discrete encoding of the moisture-proof ventilation permit degree, and calculating the single execution duration based on the ventilation status level to form a status command, specifically includes: When the moisture-proof ventilation allowance is greater than or equal to 0 and less than 1 / 4, the ventilation status level is set to 0; When the moisture-proof ventilation allowance is greater than or equal to 1 / 4 and less than 1 / 2, the ventilation status level is set to 1; When the moisture-proof ventilation allowance is greater than or equal to 1 / 2 and less than 3 / 4, the ventilation status level is set to 2; When the moisture-proof ventilation allowance is greater than or equal to 3 / 4 and less than or equal to 1, the ventilation status level is set to 3; Multiply the ventilation status level by 60 to determine the duration of a single execution; The ventilation status level is combined with the duration of a single execution to form a status command.

[0014] Optionally, the step of combining the controlled vent opening, the controlled ventilation fan operating frequency, the ventilation status level, and the single execution duration into a ventilation adjustment command group, and executing the ventilation adjustment command group according to the single execution duration in the ventilation adjustment command group, specifically includes: combining the controlled vent opening, the controlled ventilation fan operating frequency, the ventilation status level, and the single execution duration to form a ventilation adjustment command group; When the single execution duration in the ventilation adjustment command group is 0, the controlled ventilation opening is adjusted to an opening degree of 0, and the controlled ventilation fan is adjusted to an operating frequency of 0. When the execution duration of a single operation in the ventilation control command group is greater than 0, the controlled ventilation opening is adjusted to the controlled ventilation opening opening degree in the ventilation control command group, and the controlled ventilation fan is adjusted to the controlled ventilation fan operating frequency in the ventilation control command group. The controlled ventilation opening degree and the controlled ventilation fan operating frequency in the ventilation control command group remain unchanged within the single execution duration of the ventilation control command group. When the execution time of a single operation in the ventilation control command group ends, the controlled ventilation opening is adjusted to 0, the controlled ventilation fan is adjusted to 0 operating frequency, and the execution of the ventilation control command group is terminated.

[0015] The present invention has the following beneficial effects: 1. Instead of directly using uncorrelated raw sampled values ​​of indoor and outdoor temperature and humidity for subsequent judgment, indoor and outdoor temperature and humidity data are collected separately at the same sampling time. Relative humidity is normalized, and indoor and outdoor temperatures are extracted from both ends and processed for location. This process confines humidity data to a unified dimensionless range, and temperature data is transformed into a locational quantity based on the relationship between indoor and outdoor temperatures. This avoids the impact of different dimensions, numerical ranges, or boundary anomalies on subsequent judgments. It preserves the relative relationship between indoor and outdoor temperature and humidity states while eliminating the instability that may arise from directly comparing raw sampled values, providing a unified data foundation for constructing the humid thermal potential. In reality, indoor and outdoor sensor sampled values ​​may show humidity exceeding limits, small temperature differences, or similar indoor and outdoor temperatures. Directly using raw values ​​for threshold judgment can easily lead to abrupt changes or misjudgments in ventilation control. Compared to existing technologies that only use indoor humidity exceeding a threshold as a condition for ventilation to be turned on, or only compare indoor and outdoor temperatures, this solution establishes a consistent data foundation at three levels: the same sampling time, humidity normalization, and temperature location, providing more stable and interpretable input conditions for subsequent moisture prevention judgments.

[0016] 2. After exponentially extending the indoor temperature location, it is combined with the dimensionless indoor humidity to form the indoor humid heat potential. Essentially, this combines the humidity and temperature states of the indoor air into a single indicator reflecting the overall level of indoor humidity and heat, rather than judging indoor temperature and humidity separately. Increased temperature alters the air's ability to hold water vapor; observing relative humidity alone cannot fully reflect the risk of indoor dampness. By extending the temperature and combining it with humidity, the impact of humidity at higher indoor temperatures is more fully reflected, thus more closely approximating the actual air conditions relevant to moisture-proofing and ventilation. Compared to existing technologies that use indoor humidity as the sole basis for moisture-proofing, this solution introduces temperature as a factor in characterizing indoor humidity, making indoor condition evaluation no longer a single-parameter judgment but a comprehensive basis of temperature and humidity coupling, improving the targeting and stability of ventilation permit judgments.

[0017] 3. Outdoor temperature location data is subjected to exponential extension processing consistent with the indoor data, and the dimensionless outdoor humidity data is combined with the outdoor temperature extension data to form an outdoor humid thermal potential. This processing method places outdoor and indoor air conditions within the same evaluation system, allowing them to directly participate in subsequent indoor-outdoor difference analysis. Whether outdoor air is suitable for introduction into the room depends not only on whether the outdoor relative humidity is low, nor solely on whether the outdoor air is cold or hot, but also on the comprehensive impact of the outdoor air on the indoor moisture-proof environment under the current temperature and humidity combination. Compared to simply judging ventilation based on outdoor humidity being lower than indoor humidity, this scheme quantifies the humid and thermal state of the external air into a comprehensive index comparable to the indoor level by constructing an outdoor humid thermal potential, thus providing a clear, unified, and physically meaningful external state basis for subsequent condensation risk assessment.

[0018] 4. The difference between outdoor and indoor humid thermal potentials is calculated to form a condensation risk difference. A positive cutoff is applied to this difference, and a risk normalization upper bound is established by comparing indoor and outdoor humid thermal potentials. This scheme not only determines whether outdoor conditions are higher than indoor conditions but also extracts the risks in unfavorable directions separately, establishing an upper bound for subsequent normalization processing. When outdoor humid thermal potential is not higher than indoor humid thermal potential, the condensation risk from ventilation tends to be low; when outdoor humid thermal potential is higher than indoor humid thermal potential, the larger the difference, the higher the degree to which the introduction of external air may increase the risk of humidity or condensation. Positive cutoff avoids favorable differences being mistakenly treated as risks, while the risk normalization upper bound ensures the comparability of risk calculations at different sampling times and under different temperature and humidity ranges. Compared to existing technologies that simply compare indoor and outdoor humidity levels or set fixed thresholds, this solution incorporates risk direction, risk magnitude, and normalization benchmark into the calculation chain, making the judgment on moisture-proof ventilation more detailed and stable, and more suitable for continuous adjustment of controlled vents and fans.

[0019] 5. Based on the condensation risk difference, the positive vector of condensation risk, and the risk normalization upper limit, a moisture-proof ventilation permissibility level is formed. When a positive condensation risk exists, the relative relationship between indoor and outdoor humid thermal potential is converted into a permissibility level result. This scheme further transforms risk judgment into a permissible indicator that can be directly used for ventilation control, making the ability to ventilate and the degree of ventilation no longer a binary judgment, but a continuous moisture-proof constraint. When the outdoor air condition does not increase the condensation risk, a higher permissibility level can be given; when the outdoor humid thermal potential is higher than the indoor humid thermal potential, the permissibility level will decrease with the degree of risk, thus naturally inhibiting the ventilation opening and fan frequency. In reality, if ventilation is completely prohibited only when a risk occurs, it may lead to long-term stagnation of indoor air; if the risk is ignored and ventilation is continued, it may cause dampness or condensation. This scheme establishes a balance between the two, so that ventilation control can retain the necessary air exchange capacity while being constrained by moisture-proof risk. Compared to the on / off ventilation strategy in existing technologies, the permissibility level formed by this solution can serve as an intermediate control quantity for continuous adjustment, transforming environmental risks into enforcement intensity, and has greater adaptability and engineering availability.

[0020] 6. The moisture-proof ventilation permit level is mapped to the controlled vent opening degree and the controlled ventilation fan operating frequency, respectively, and both are used as ventilation execution variables. This scheme does not simply output an opening or closing result, but transforms the same moisture-proof permit index into a coordinated control variable of two actuators, allowing the vents and fans to change in tandem under the same risk constraint. When the moisture-proof ventilation permit level is low, the controlled vents and fans can remain closed or in a low-output state; when the permit level increases, the vent opening degree and fan operating frequency increase accordingly, thus forming a ventilation intensity that matches the environmental safety level. Compared with the fixed opening degree, fixed frequency, or single-device control methods in existing technologies, this scheme maps the vents and fans as an execution combination for control, reducing the introduction of humid air when the moisture-proof permit level is low and improving ventilation efficiency when the permit level is high, thus achieving a more reasonable balance between moisture-proof safety, ventilation efficiency, and energy consumption control.

[0021] 7. Based on the permissible level of moisture-proof ventilation, the ventilation status is discretely encoded to form a ventilation status level. The duration of each execution is then determined based on the ventilation status level, ultimately forming a status command. This scheme further transforms the continuous permissible level into a hierarchical status, enabling the control system to not only have continuous execution quantities but also discrete status information that is easy to schedule, record, and execute. The ventilation status level reflects the phased differences in the current moisture-proof permissible level, while the duration of each execution transforms the status level into a time-dimensional control result, giving each ventilation action a clear duration and preventing repeated start-stop cycles of fans and vents due to frequent fluctuations. Compared to existing technologies that only output switch commands or fan frequencies, this scheme adds status coding and time control, making the ventilation strategy more suitable for engineering execution, operation recording, and subsequent status tracking. It also enables the ventilation process to have a hierarchical response capability when moisture-proof risks change.

[0022] 8. The controlled vent opening degree, controlled ventilation fan operating frequency, ventilation status level, and single execution duration are combined into a ventilation adjustment command group, and the ventilation adjustment process is executed, maintained, and terminated according to the single execution duration. This solution integrates the results of the aforementioned data processing, risk assessment, permissibility calculation, execution quantity mapping, and status coding into a unified command, enabling the controlled object, control intensity, status level, and duration to be expressed collaboratively within the same command group. The execution end can directly adjust the vents and fans according to the command group, maintaining the predetermined opening degree and frequency within a single execution duration, and restoring the closed state at the end of the execution, thereby avoiding the continuous operation of ventilation actions without boundaries. Compared to the existing technology that only provides a ventilation opening signal or a single fan control signal, this solution outputs a complete execution command group, including ventilation intensity, execution duration, and status level, giving ventilation adjustment a closed-loop action boundary, which can improve control safety, execution consistency, and automation level in moisture-proof scenarios. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the process of the present invention.

[0024] Figure 2 This is a schematic diagram of the indoor and outdoor meteorological data acquisition and dimensionless preprocessing process of this invention.

[0025] Figure 3 This is a schematic diagram of the process for determining the condensation risk difference in this invention.

[0026] Figure 4 This is a schematic diagram of the ventilation execution quantity generation process of the present invention.

[0027] Figure 5 This is a schematic diagram of the ventilation adjustment command output process of the present invention. Detailed Implementation

[0028] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example, refer to Figure 1 A ventilation control method based on the linkage of indoor and outdoor meteorological data includes: Indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity are collected at the same sampling time. The indoor and outdoor relative humidity are normalized to form dimensionless indoor and outdoor humidity values. Based on the indoor and outdoor air temperatures, a double-ended low temperature reference, a double-ended high temperature reference, a temperature expansion value, an indoor temperature location value, and an outdoor temperature location value are formed. The indoor temperature location quantity is exponentially extended to form the indoor temperature extension quantity. The indoor dimensionless humidity quantity is combined with the indoor temperature extension quantity to form the indoor humid heat potential. The outdoor temperature location quantity is exponentially extended to form the outdoor temperature extension quantity. The outdoor dimensionless humidity quantity is combined with the outdoor temperature extension quantity to form the outdoor humid heat potential. The difference between the outdoor and indoor humid thermal potentials is calculated to form the condensation risk difference. The positive truncation of the condensation risk difference is extracted to form the positive condensation risk vector. By comparing the indoor and outdoor humid thermal potentials, the risk normalization upper bound is formed. Based on the condensation risk difference, the positive vector of condensation risk, and the risk normalization upper bound, the moisture-proof ventilation permit degree is calculated. Based on the moisture-proof ventilation permit degree, the controlled ventilation opening degree and the controlled ventilation fan operating frequency are generated, and the controlled ventilation opening degree and the controlled ventilation fan operating frequency are used as ventilation execution quantities; Based on the discrete coding of moisture-proof ventilation permit degree, a ventilation status level is generated, and the single execution duration is calculated based on the ventilation status level to form a status command; The controlled ventilation opening, the operating frequency of the controlled ventilation fan, the ventilation status level, and the single execution duration are combined into a ventilation adjustment command group, and the ventilation adjustment command group is executed according to the single execution duration in the ventilation adjustment command group.

[0030] By collecting indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity at the same sampling time, and then sequentially performing humidity normalization, temperature benchmark construction, indoor and outdoor humid thermal potential construction, condensation risk difference calculation, moisture-proof ventilation permit determination, ventilation execution quantity generation, ventilation status coding, and ventilation adjustment command output, this solution addresses the problem that existing ventilation control methods, which rely solely on single indoor or outdoor humidity levels or fixed time strategies, struggle to balance ventilation needs and moisture-proof risks. The beneficial effect of this solution lies in its approach: instead of simply determining whether to open or close, it first converts the indoor and outdoor temperature and humidity states into a comparable comprehensive state. Then, based on the potential condensation risk of outdoor air relative to the indoor environment, it generates a permit degree, further translating this permit degree into vent opening degree, fan operating frequency, ventilation status level, and execution duration. Compared with existing technologies, this solution links data processing, risk assessment, and execution control into a complete process, giving ventilation regulation clear data sources, judgment criteria, and execution boundaries. It can reduce the risk of dampness and condensation caused by the entry of high-humidity external air into the room, while avoiding the long-term stagnation of indoor air caused by completely prohibiting ventilation, thereby improving the coordination and feasibility of moisture-proof ventilation control.

[0031] Reference Figure 2 The process involves collecting indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity at the same sampling time; normalizing the indoor and outdoor relative humidity to generate dimensionless indoor and outdoor humidity values; and generating dual-end low-temperature reference, dual-end high-temperature reference, temperature expansion, indoor temperature location, and outdoor temperature location values ​​based on the indoor and outdoor air temperatures. Specifically, this includes: At the same sampling time, indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity were collected at predetermined indoor and outdoor sampling points to obtain four meteorological data. Branch normalization is performed on the indoor relative humidity. When the indoor relative humidity is less than 0, the dimensionless humidity value is taken as 0. When the indoor relative humidity is greater than or equal to 0 and less than or equal to 100, the ratio of the indoor relative humidity to 100 is taken as the dimensionless humidity value. When the indoor relative humidity is greater than 100, the dimensionless humidity value is taken as 1. Branch normalization is performed on the outdoor relative humidity. When the outdoor relative humidity is less than 0, the outdoor dimensionless humidity value is taken as 0. When the outdoor relative humidity is greater than or equal to 0 and less than or equal to 100, the ratio of the outdoor relative humidity to 100 is taken as the outdoor dimensionless humidity value. When the outdoor relative humidity is greater than 100, the outdoor dimensionless humidity value is taken as 1. The indoor and outdoor air temperatures are extracted by end values. The lower value of the indoor and outdoor air temperatures is used as the dual-end low temperature baseline, and the higher value of the indoor and outdoor air temperatures is used as the dual-end high temperature baseline. The result of subtracting the dual-end low temperature baseline from the dual-end high temperature baseline and adding 1 is used as the temperature expansion quantity. Based on the dual-end low-temperature baseline and the temperature expansion, the indoor air temperature and outdoor air temperature are respectively processed into dimensionless values. The ratio of the indoor air temperature minus the dual-end low-temperature baseline to the temperature expansion is used as the indoor temperature location value, and the ratio of the outdoor air temperature minus the dual-end low-temperature baseline to the temperature expansion is used as the outdoor temperature location value.

[0032] At the same sampling time, indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity were collected at predetermined indoor and outdoor sampling points, and recorded as follows: , , , ;in, Indoor air temperature; Indoor relative humidity; Outdoor air temperature; Outdoor relative humidity; Branch normalization was performed on the indoor and outdoor relative humidity to obtain: , ;in, This refers to the dimensionless humidity level indoors. This is a dimensionless outdoor humidity measurement. Endpoint extraction was performed on indoor and outdoor air temperatures to obtain... , ;in, As a dual-end low-temperature reference; A dual-end high-temperature reference; And calculate the temperature expansion as follows: ;in, This is the temperature expansion value; Using a dual-end low-temperature reference and temperature expansion, the indoor and outdoor air temperatures were dimensionlessly processed to obtain: , ;in, For indoor temperature location measurement; This is the location measurement for outdoor temperature.

[0033] The process of exponentially stretching the indoor temperature location quantity to form the indoor temperature stretching quantity, and combining the indoor dimensionless humidity quantity with the indoor temperature stretching quantity to form the indoor humid heat potential, specifically includes: An exponential extension is performed on the indoor temperature location quantity, with the natural constant as the base and the indoor temperature location quantity as the exponent, to form the indoor temperature extension quantity; Multiply the dimensionless indoor humidity by the indoor temperature expansion to form the indoor humid thermal potential.

[0034] Performing an exponential stretch on the indoor temperature location quantity, we obtain: ;in, For indoor temperature extension; It is a natural constant; Multiplying the indoor humidity by the indoor temperature expansion, we get: ;in, The indoor humidity and heat potential.

[0035] The process of exponentially stretching the outdoor temperature location quantity to form the outdoor temperature stretching quantity, and combining the outdoor dimensionless humidity quantity with the outdoor temperature stretching quantity to form the outdoor humid heat potential, specifically includes: An exponential extension is performed on the outdoor temperature location quantity, with the natural constant as the base and the outdoor temperature location quantity as the exponent, to form the outdoor temperature extension quantity; The outdoor dimensionless humidity is multiplied by the outdoor temperature extension to form the outdoor humid thermal potential.

[0036] Performing an exponential stretch on the outdoor temperature location quantity, we obtain: ;in, Expansion range for outdoor temperature; Multiplying the outdoor humidity by the outdoor temperature extension, we get: ;in, The outdoor temperature potential is humid.

[0037] Reference Figure 3 The step involves calculating the difference between outdoor and indoor humid thermal potentials to form a condensation risk difference, extracting a positive condensation risk vector from this difference, and comparing indoor and outdoor humid thermal potentials to establish a risk normalization upper bound. Specifically, this includes: Subtracting the indoor humidity and heat potential from the outdoor humidity and heat potential results in a lower risk of condensation. A positive cutoff is performed on the condensation risk difference. When the condensation risk difference is less than or equal to 0, the positive vector of condensation risk is set to 0. When the condensation risk difference is greater than 0, the current value of the condensation risk difference is taken as the positive vector of condensation risk. Upper bounds are extracted for indoor and outdoor humid thermal potentials. When the indoor humid thermal potential is greater than or equal to the outdoor humid thermal potential, the indoor humid thermal potential is taken as the risk normalization upper bound. When the indoor humid thermal potential is less than the outdoor humid thermal potential, the outdoor humid thermal potential is taken as the risk normalization upper bound.

[0038] Using the difference between outdoor and indoor humid thermal potential as the condensation risk difference, we obtain: ;in, The risk of condensation is low. Applying a positive cutoff to the condensation risk difference yields: ;in, This represents the positive vector of condensation risk. Upper bound extraction was performed on the indoor and outdoor humid thermal potentials, yielding: ;in, This is the upper bound of risk normalization.

[0039] The moisture-proof ventilation permit degree is calculated based on the condensation risk difference, the positive vector of condensation risk, and the risk normalization upper bound, specifically including: When the condensation risk difference is less than or equal to 0, the moisture-proof ventilation allowance is taken as 1; When the condensation risk difference is greater than 0, calculate the ratio of the positive vector of condensation risk to the upper limit of risk normalization, and then subtract the ratio of the positive vector of condensation risk to the upper limit of risk normalization from 1 to form the moisture-proof ventilation permittivity. When the condensation risk difference is greater than 0, calculate the ratio of indoor humid thermal potential to outdoor humid thermal potential, and use the ratio of indoor humid thermal potential to outdoor humid thermal potential as the simplified result of the moisture-proof ventilation permit.

[0040] Based on the condensation risk difference and the upper limit of the risk normalization, the permissible degree of moisture-proof ventilation is calculated as follows: ;in, To ensure adequate moisture control and ventilation; when At that time, the moisture-proof and ventilation permit degree was simplified to: .

[0041] Reference Figure 4 The process of mapping controlled ventilation openings and controlled ventilation fan operating frequencies based on moisture-proof ventilation permittivity, and using these parameters as ventilation execution parameters, specifically includes: When the moisture-proof ventilation allowance is greater than or equal to 0 and less than 1 / 4, the controlled ventilation opening is set to 0. When the moisture-proof ventilation allowance is greater than or equal to 1 / 4 and less than or equal to 1, the controlled ventilation opening is set to the current value of the moisture-proof ventilation allowance. Using the rated frequency of the controlled ventilation fan as the frequency reference, when the moisture-proof ventilation allowable degree is greater than or equal to 0 and less than 1 / 4, the operating frequency of the controlled ventilation fan is set to 0. When the moisture-proof ventilation allowable degree is greater than or equal to 1 / 4 and less than or equal to 1, the rated frequency of the controlled ventilation fan is multiplied by the moisture-proof ventilation allowable degree to form the operating frequency of the controlled ventilation fan. The controlled ventilation opening degree is combined with the controlled ventilation fan operating frequency to form the ventilation execution quantity.

[0042] Mapping the moisture-proof ventilation allowance to the controlled ventilation opening degree, we get: ;in, Controlled ventilation opening degree; Mapping the moisture-proof ventilation allowance to the operating frequency of the controlled ventilation fan, we get: ;in, The operating frequency of the controlled ventilation fan; The rated frequency of the controlled ventilation fan; Controlled ventilation opening Operating frequency of controlled ventilation fans As the ventilation execution volume.

[0043] The process involves generating ventilation status levels based on discrete coding of moisture-proof and ventilation permissibility, calculating the duration of a single execution based on the ventilation status levels, and generating status instructions, specifically including: When the moisture-proof ventilation allowance is greater than or equal to 0 and less than 1 / 4, the ventilation status level is set to 0; When the moisture-proof ventilation allowance is greater than or equal to 1 / 4 and less than 1 / 2, the ventilation status level is set to 1; When the moisture-proof ventilation allowance is greater than or equal to 1 / 2 and less than 3 / 4, the ventilation status level is set to 2; When the moisture-proof ventilation allowance is greater than or equal to 3 / 4 and less than or equal to 1, the ventilation status level is set to 3; Multiply the ventilation status level by 60 to determine the duration of a single execution; The ventilation status level is combined with the duration of a single execution to form a status command.

[0044] Based on the permissibility of moisture and ventilation, the ventilation status is discretely coded to obtain... ;in, Ventilation status level; The duration of a single execution is calculated based on the ventilation status level, resulting in: ;in, Duration of a single execution; Ventilation status level Duration of a single execution As a status instruction.

[0045] Reference Figure 5The step of combining the controlled ventilation opening, the controlled ventilation fan operating frequency, the ventilation status level, and the single execution duration into a ventilation adjustment command group, and executing the ventilation adjustment command group according to the single execution duration in the ventilation adjustment command group, specifically includes: combining the controlled ventilation opening, the controlled ventilation fan operating frequency, the ventilation status level, and the single execution duration to form a ventilation adjustment command group; When the single execution duration in the ventilation adjustment command group is 0, the controlled ventilation opening is adjusted to an opening degree of 0, and the controlled ventilation fan is adjusted to an operating frequency of 0. When the execution duration of a single operation in the ventilation control command group is greater than 0, the controlled ventilation opening is adjusted to the controlled ventilation opening opening degree in the ventilation control command group, and the controlled ventilation fan is adjusted to the controlled ventilation fan operating frequency in the ventilation control command group. The controlled ventilation opening degree and the controlled ventilation fan operating frequency in the ventilation control command group remain unchanged within the single execution duration of the ventilation control command group. When the execution time of a single operation in the ventilation control command group ends, the controlled ventilation opening is adjusted to 0, the controlled ventilation fan is adjusted to 0 operating frequency, and the execution of the ventilation control command group is terminated.

[0046] The controlled ventilation opening opening, controlled ventilation fan operating frequency, ventilation status level, and single execution duration are combined as follows: ;in, For ventilation control command group; when At this time, adjust the controlled ventilation opening to 0 degrees and adjust the controlled ventilation fan to 0 operating frequency; when At that time, adjust the controlled ventilation opening to the specified opening degree. Adjust the controlled ventilation fan to its operating frequency. and in a single execution duration Maintain controlled ventilation openings inside. and the operating frequency of the controlled ventilation fan Unchanged; at the end of a single execution period, the controlled ventilator is adjusted to an opening of 0, the controlled ventilation fan is adjusted to an operating frequency of 0, and the ventilation adjustment command is terminated.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A ventilation control method based on the linkage of indoor and outdoor meteorological data, characterized in that, include: Indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity are collected at the same sampling time. The indoor and outdoor relative humidity are normalized to form dimensionless indoor and outdoor humidity values. Based on the indoor and outdoor air temperatures, a double-ended low temperature reference, a double-ended high temperature reference, a temperature expansion value, an indoor temperature location value, and an outdoor temperature location value are formed. The indoor temperature location quantity is exponentially extended to form the indoor temperature extension quantity. The indoor dimensionless humidity quantity is combined with the indoor temperature extension quantity to form the indoor humid heat potential. The outdoor temperature location quantity is exponentially extended to form the outdoor temperature extension quantity. The outdoor dimensionless humidity quantity is combined with the outdoor temperature extension quantity to form the outdoor humid heat potential. The difference between the outdoor and indoor humid thermal potentials is calculated to form the condensation risk difference. The positive truncation of the condensation risk difference is extracted to form the positive condensation risk vector. By comparing the indoor and outdoor humid thermal potentials, the risk normalization upper bound is formed. Based on the condensation risk difference, the positive vector of condensation risk, and the risk normalization upper bound, the moisture-proof ventilation permit degree is calculated; Based on the moisture-proof ventilation permit degree, the controlled ventilation opening degree and the controlled ventilation fan operating frequency are generated, and the controlled ventilation opening degree and the controlled ventilation fan operating frequency are used as ventilation execution quantities; Based on the discrete coding of the moisture-proof and ventilation permit degree, a ventilation status level is generated, and the single execution duration is calculated based on the ventilation status level to form a status command; The controlled ventilation opening, the operating frequency of the controlled ventilation fan, the ventilation status level, and the single execution duration are combined into a ventilation adjustment command group, and the ventilation adjustment command group is executed according to the single execution duration in the ventilation adjustment command group.

2. The ventilation control method based on the linkage of indoor and outdoor meteorological data according to claim 1, characterized in that, The process involves collecting indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity at the same sampling time. The indoor and outdoor relative humidity values ​​are then normalized to generate dimensionless indoor and outdoor humidity values. Furthermore, based on the indoor and outdoor air temperatures, a dual-end low-temperature baseline, a dual-end high-temperature baseline, a temperature expansion value, an indoor temperature location value, and an outdoor temperature location value are generated. Specifically, this includes: At the same sampling time, indoor air temperature, indoor relative humidity, outdoor air temperature, and outdoor relative humidity were collected at predetermined indoor and outdoor sampling points to obtain four meteorological data. Branch normalization is performed on the indoor relative humidity. When the indoor relative humidity is less than 0, the dimensionless humidity value is taken as 0. When the indoor relative humidity is greater than or equal to 0 and less than or equal to 100, the ratio of the indoor relative humidity to 100 is taken as the dimensionless humidity value. When the indoor relative humidity is greater than 100, the dimensionless humidity value is taken as 1. Branch normalization is performed on the outdoor relative humidity. When the outdoor relative humidity is less than 0, the outdoor dimensionless humidity value is taken as 0. When the outdoor relative humidity is greater than or equal to 0 and less than or equal to 100, the ratio of the outdoor relative humidity to 100 is taken as the outdoor dimensionless humidity value. When the outdoor relative humidity is greater than 100, the outdoor dimensionless humidity value is taken as 1. The indoor and outdoor air temperatures are extracted by end values. The lower value of the indoor and outdoor air temperatures is used as the dual-end low temperature baseline, and the higher value of the indoor and outdoor air temperatures is used as the dual-end high temperature baseline. The result of subtracting the dual-end low temperature baseline from the dual-end high temperature baseline and adding 1 is used as the temperature expansion quantity. Based on the dual-end low-temperature baseline and the temperature expansion, the indoor air temperature and outdoor air temperature are respectively processed into dimensionless values. The ratio of the indoor air temperature minus the dual-end low-temperature baseline to the temperature expansion is used as the indoor temperature location value, and the ratio of the outdoor air temperature minus the dual-end low-temperature baseline to the temperature expansion is used as the outdoor temperature location value.

3. The ventilation control method based on the linkage of indoor and outdoor meteorological data according to claim 2, characterized in that, The process involves exponentially stretching the indoor temperature location quantity to form an indoor temperature stretching quantity, and then combining the indoor dimensionless humidity quantity with the indoor temperature stretching quantity to form an indoor humid heat potential, specifically including: An exponential extension is performed on the indoor temperature location quantity, with the natural constant as the base and the indoor temperature location quantity as the exponent, to form the indoor temperature extension quantity; Multiply the dimensionless indoor humidity by the indoor temperature expansion to form the indoor humid thermal potential.

4. The ventilation control method based on the linkage of indoor and outdoor meteorological data according to claim 3, characterized in that, The process of exponentially stretching the outdoor temperature location quantity to form the outdoor temperature stretching quantity, and combining the outdoor dimensionless humidity quantity with the outdoor temperature stretching quantity to form the outdoor humid heat potential, specifically includes: An exponential extension is performed on the outdoor temperature location quantity, with the natural constant as the base and the outdoor temperature location quantity as the exponent, to form the outdoor temperature extension quantity; The outdoor dimensionless humidity is multiplied by the outdoor temperature extension to form the outdoor humid thermal potential.

5. A ventilation control method based on the linkage of indoor and outdoor meteorological data according to claim 4, characterized in that, The process involves calculating the difference between outdoor and indoor humid thermal potentials to form a condensation risk difference, extracting a positive condensation risk vector from this difference, and comparing indoor and outdoor humid thermal potentials to determine a risk normalization upper bound. Specifically, this includes: Subtracting the indoor humidity and heat potential from the outdoor humidity and heat potential results in a lower risk of condensation. A positive cutoff is performed on the condensation risk difference. When the condensation risk difference is less than or equal to 0, the positive vector of condensation risk is set to 0. When the condensation risk difference is greater than 0, the current value of the condensation risk difference is taken as the positive vector of condensation risk. Upper bounds are extracted for indoor and outdoor humid thermal potentials. When the indoor humid thermal potential is greater than or equal to the outdoor humid thermal potential, the indoor humid thermal potential is taken as the risk normalization upper bound. When the indoor humid thermal potential is less than the outdoor humid thermal potential, the outdoor humid thermal potential is taken as the risk normalization upper bound.

6. A ventilation control method based on the linkage of indoor and outdoor meteorological data according to claim 5, characterized in that, The moisture-proof ventilation permit degree is calculated based on the condensation risk difference, the positive vector of condensation risk, and the risk normalization upper bound, specifically including: When the condensation risk difference is less than or equal to 0, the moisture-proof ventilation allowance is taken as 1; When the condensation risk difference is greater than 0, calculate the ratio of the positive vector of condensation risk to the upper limit of risk normalization, and then subtract the ratio of the positive vector of condensation risk to the upper limit of risk normalization from 1 to form the moisture-proof ventilation permittivity. When the condensation risk difference is greater than 0, calculate the ratio of indoor humid thermal potential to outdoor humid thermal potential, and use the ratio of indoor humid thermal potential to outdoor humid thermal potential as the simplified result of the moisture-proof ventilation permit.

7. A ventilation control method based on the linkage of indoor and outdoor meteorological data according to claim 6, characterized in that, The process of mapping controlled ventilation openings and controlled ventilation fan operating frequencies based on moisture-proof and ventilation permit limits, and using these parameters as ventilation execution parameters, specifically includes: When the moisture-proof ventilation allowance is greater than or equal to 0 and less than 1 / 4, the controlled ventilation opening is set to 0. When the moisture-proof ventilation allowance is greater than or equal to 1 / 4 and less than or equal to 1, the controlled ventilation opening is set to the current value of the moisture-proof ventilation allowance. Using the rated frequency of the controlled ventilation fan as the frequency reference, when the moisture-proof ventilation allowable degree is greater than or equal to 0 and less than 1 / 4, the operating frequency of the controlled ventilation fan is set to 0. When the moisture-proof ventilation allowable degree is greater than or equal to 1 / 4 and less than or equal to 1, the rated frequency of the controlled ventilation fan is multiplied by the moisture-proof ventilation allowable degree to form the operating frequency of the controlled ventilation fan. The controlled ventilation opening degree is combined with the controlled ventilation fan operating frequency to form the ventilation execution quantity.

8. A ventilation control method based on the linkage of indoor and outdoor meteorological data according to claim 7, characterized in that, The process involves generating ventilation status levels based on discrete coding of moisture-proof and ventilation permissibility, calculating the duration of a single execution based on the ventilation status levels, and generating status instructions, specifically including: When the moisture-proof ventilation allowance is greater than or equal to 0 and less than 1 / 4, the ventilation status level is set to 0; When the moisture-proof ventilation allowance is greater than or equal to 1 / 4 and less than 1 / 2, the ventilation status level is set to 1; When the moisture-proof ventilation allowance is greater than or equal to 1 / 2 and less than 3 / 4, the ventilation status level is set to 2; When the moisture-proof ventilation allowance is greater than or equal to 3 / 4 and less than or equal to 1, the ventilation status level is set to 3; Multiply the ventilation status level by 60 to determine the duration of a single execution; The ventilation status level is combined with the duration of a single execution to form a status command.

9. A ventilation control method based on the linkage of indoor and outdoor meteorological data according to claim 8, characterized in that, The process of combining the controlled ventilation opening, the controlled ventilation fan operating frequency, the ventilation status level, and the single execution duration into a ventilation adjustment command group, and executing the ventilation adjustment command group according to the single execution duration in the ventilation adjustment command group, specifically includes: combining the controlled ventilation opening, the controlled ventilation fan operating frequency, the ventilation status level, and the single execution duration to form a ventilation adjustment command group; When the single execution duration in the ventilation adjustment command group is 0, the controlled ventilation opening is adjusted to an opening degree of 0, and the controlled ventilation fan is adjusted to an operating frequency of 0. When the execution duration of a single operation in the ventilation control command group is greater than 0, the controlled ventilation opening is adjusted to the controlled ventilation opening opening degree in the ventilation control command group, and the controlled ventilation fan is adjusted to the controlled ventilation fan operating frequency in the ventilation control command group. The controlled ventilation opening degree and the controlled ventilation fan operating frequency in the ventilation control command group remain unchanged within the single execution duration of the ventilation control command group. When the execution time of a single operation in the ventilation control command group ends, the controlled ventilation opening is adjusted to 0, the controlled ventilation fan is adjusted to 0 operating frequency, and the execution of the ventilation control command group is terminated.

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