CN114791142B - Control method and device of fresh air system, electronic device and computer equipment - Google Patents
Control method and device of fresh air system, electronic device and computer equipment Download PDFInfo
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- CN114791142B CN114791142B CN202110096941.XA CN202110096941A CN114791142B CN 114791142 B CN114791142 B CN 114791142B CN 202110096941 A CN202110096941 A CN 202110096941A CN 114791142 B CN114791142 B CN 114791142B
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000001276 controlling effect Effects 0.000 claims abstract description 29
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 238000004590 computer program Methods 0.000 claims description 32
- 238000013507 mapping Methods 0.000 claims description 22
- 238000004364 calculation method Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 4
- 238000001514 detection method Methods 0.000 description 6
- 238000004378 air conditioning Methods 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 2
- 238000004887 air purification Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application provides a control method, a device, an electronic device, computer equipment and a storage medium of a fresh air system, which are used for detecting the number of people in a target space where the fresh air system is positioned at regular time, and when the current number of people change value in the target space reaches a preset starting value, the control method is used for controlling the fresh air system according to the CO in the target space 2 Influence factor of concentration, current CO 2 Concentration, fresh air CO of fresh air system 2 Concentration and preset target CO 2 Calculating the current demand fresh air quantity, calculating to obtain a first demand difference value of the current demand fresh air quantity and the historical demand fresh air quantity when the current demand fresh air quantity is increased, calculating a first opening difference value of the current opening fresh air quantity and the next opening fresh air quantity, and controlling a fresh air system to perform air quantity adjustment on a target space if the first demand difference value is larger than the first opening difference value so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching target 2 Concentration. The application realizes the CO in the target space 2 And the concentration is accurately regulated, so that the utilization rate of fresh air resources and the air quality of a target space are improved.
Description
Technical Field
The present application relates to the field of air detection technologies, and in particular, to a method and apparatus for controlling a fresh air system, an electronic device, a computer device, and a storage medium.
Background
In order to ensure the air quality in a specific space, it is necessary toFor CO in specific space 2 Concentration detection and control. For example, in a subway car, CO in the car is generally controlled by adjusting the fresh air volume of a fresh air system installed in the subway 2 Concentration. The common fresh air quantity gear control is a method for adjusting the fresh air quantity according to the wind speed or the air quantity in a rough way, and the method basically depends on manual experience to carry out rough control and can not realize CO in a carriage 2 The concentration is precisely controlled, the utilization rate of fresh air resources is not high, and the regulation effect is not ideal.
Aiming at the gear of the current manual control fresh air system, the CO in a specific space is controlled 2 The concentration technology can not realize CO 2 The accurate control of concentration, and then the problem that the fresh air resource utilization is not high, and the regulation effect is not ideal is led to, has not yet put forward effectual solution.
Disclosure of Invention
The embodiment of the application provides a control method, a control device, an electronic device, computer equipment and a storage medium of a fresh air system, which are used for at least solving the problem that CO cannot be realized in the related technology 2 Accurate control of concentration, and then the new trend resource utilization ratio that leads to is not high, adjusts the problem that the effect is not ideal.
In a first aspect, an embodiment of the present application provides a method for controlling a fresh air system, where the method includes the following steps:
under the condition that the change value of the number of people in the target space where the fresh air system is positioned reaches a preset starting value, according to the CO in the target space 2 Influence factor of concentration, CO at present moment 2 Concentration, fresh air CO of fresh air system 2 Concentration and preset target CO 2 Calculating the current required fresh air quantity by concentration;
calculating a difference between the current demand fresh air quantity and the historical demand fresh air quantity to obtain a first demand difference value under the condition that the current demand fresh air quantity is larger than or equal to the previously calculated historical demand fresh air quantity; calculating a difference value between the current gear opening fresh air quantity and the preset next gear opening fresh air quantity in the fresh air system to obtain a first opening difference value;
when the first demand difference value is greater than or equal to the first opening difference value, controlling the fresh air system to perform air volume adjustment on the target space according to the current demand fresh air volume so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching the target 2 Concentration.
In some embodiments, the control method of the fresh air system further includes the following steps:
detecting the number of people in a target space where the fresh air system is located at fixed time;
calculating a difference between the number of people in the currently detected target space and the number of people in the previously detected target space;
comparing the calculated difference of the number of people with the preset adjustment value, and if the difference of the number of people is larger than or equal to the preset adjustment value, determining that the change value of the number of people in the target space where the fresh air system is located reaches the preset adjustment value.
In some embodiments, the control method of the fresh air system further includes the following steps:
calculating a difference between the current demand fresh air quantity and the historical demand fresh air quantity under the condition that the current demand fresh air quantity is smaller than the historical demand fresh air quantity so as to obtain a second demand difference; calculating the difference between the current gear opening fresh air quantity and the preset previous gear opening fresh air quantity to obtain a second opening difference value;
when the second demand difference value is greater than or equal to the second opening difference value, controlling the fresh air system to perform air volume adjustment on the target space according to the current demand fresh air volume so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching the target 2 Concentration.
In some of these embodiments, the CO within the target space 2 The influence factor of the concentration comprises the current number of people in the target space and the average CO in the target space 2 Release amount, target space volume and preset fresh air systemOpening time interval.
In some of these embodiments, the people average CO is based on the number of people in the target space 2 The release amount, the target space volume, the opening time interval, the current CO of the target space 2 Concentration of the fresh air CO 2 Concentration and the target CO 2 The concentration and the current required fresh air quantity are calculated, and a specific solving mode can be expressed as follows:
wherein n is the number of people in the target space, and x is the known average CO 2 A release amount; v is the volume of a target space, tau is the calculation time interval of the opening degree of a valve in the fresh air system, and tau is the set value of the fresh air system; y is 0 For detected fresh air CO 2 Concentration, y 1 For the current CO in the target space 2 Concentration, y 3 For a preset target CO 2 Concentration.
In some embodiments, the fresh air system includes fresh air equipment and return air equipment, and before calculating the required fresh air volume, the method further includes the following steps:
measuring fresh air quantity under the opening degree of a plurality of groups of fresh air equipment and the opening degree of return air equipment of the fresh air system;
And recording the combined opening of the fresh air device and the return air device under different fresh air volumes, and establishing a mapping relation between the fresh air volume and the combined opening.
In some embodiments, when the first demand difference is greater than or equal to the first opening difference, the fresh air system is controlled to perform air volume adjustment on the target space according to the current demand fresh air volume, so that CO in the target space 2 Concentration of CO reaching the target 2 The concentration comprises the following steps:
matching the combined opening degree from the mapping relation according to the required fresh air quantity;
and respectively adjusting the actual opening of the fresh air device and the actual opening of the return air device according to the combined opening.
In some embodiments, the control method of the fresh air system further includes the following steps:
and after the required fresh air quantity is calculated, correcting the required fresh air quantity according to actual operation data in a target space.
In a second aspect, an embodiment of the present application provides a control device for a fresh air system, where the device includes an air volume calculating module, a difference calculating module, and an adjusting and judging module;
the air volume calculation module is used for calculating the air volume according to the CO in the target space when the change value of the number of people in the target space where the fresh air system is located reaches a preset starting value 2 Influence factor of concentration, CO at present moment 2 Concentration, fresh air CO of fresh air system 2 Concentration and preset target CO 2 Calculating the current required fresh air quantity by concentration;
the difference calculating module is used for calculating a difference between the current demand fresh air quantity and the historical demand fresh air quantity to obtain a first demand difference value under the condition that the current demand fresh air quantity is larger than or equal to the historical demand fresh air quantity calculated in the previous time; calculating a difference value between the current gear opening fresh air quantity and the preset next gear opening fresh air quantity in the fresh air system to obtain a first opening difference value;
the adjusting and judging module is configured to control, when the first demand difference is greater than or equal to the first opening difference, the fresh air system to perform air volume adjustment on the target space according to the current demand fresh air volume, so that CO in the target space is adjusted 2 Concentration of CO reaching the target 2 Concentration.
In a third aspect, an embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements a method for controlling a fresh air system according to the first aspect when executing the computer program.
In a fourth aspect, an embodiment of the present application provides a computer device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements a method for controlling a fresh air system according to the first aspect when executing the computer program.
In a fifth aspect, an embodiment of the present application provides a storage medium having a computer program stored thereon, which when executed by a processor implements a method for controlling a fresh air system according to the first aspect.
According to the control method, the control device, the electronic device, the computer equipment and the storage medium of the fresh air system, the number of people in the target space where the fresh air system is located is detected at fixed time, and when the current number of people change value in the target space reaches a preset starting value, the control method, the control device, the electronic device, the computer equipment and the storage medium are used for controlling the fresh air system according to the CO in the target space 2 Influence factor of concentration, current CO 2 Concentration, fresh air CO of fresh air system 2 Concentration and preset target CO 2 Calculating the current demand fresh air quantity, calculating to obtain a first demand difference value between the current demand fresh air quantity and the historical demand fresh air quantity when the current demand fresh air quantity is increased, calculating a first opening difference value between the current opening fresh air quantity and the next opening fresh air quantity, and controlling the fresh air system to perform air quantity adjustment on a target space if the first demand difference value is larger than the first opening difference value so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching target 2 Concentration. The application can realize the CO in the target space 2 And the concentration is accurately regulated, so that the utilization rate of fresh air resources and the air quality of a target space are improved.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the other features, objects, and advantages of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is an application environment diagram of a control method of a fresh air system according to an embodiment of the present application;
FIG. 2 is a flow chart of a method of controlling a fresh air system according to an embodiment of the present application;
FIG. 3 is a schematic structural view of a control device of a fresh air system according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an electronic device according to an embodiment of the application;
fig. 5 is a schematic structural view of a computer device according to an embodiment of the present application.
Detailed Description
The present application will be described and illustrated with reference to the accompanying drawings and examples in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. All other embodiments, which can be made by a person of ordinary skill in the art based on the embodiments provided by the present application without making any inventive effort, are intended to fall within the scope of the present application. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is to be expressly and implicitly understood by those of ordinary skill in the art that the described embodiments of the application can be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "a," "an," "the," and similar referents in the context of the application are not to be construed as limiting the quantity, but rather as singular or plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in connection with the present application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means greater than or equal to two. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. The terms "first," "second," "third," and the like, as used herein, are merely distinguishing between similar objects and not representing a particular ordering of objects.
Fig. 1 is an application environment diagram of a control method of a fresh air system according to an embodiment of the present application. As shown in fig. 1, in the application environment, the air conditioning unit 101 includes a fresh air system, and the air conditioning unit 101 is installed on top of the cabin 102, and generally, two air conditioning units may be installed in one cabin to condition air in the cabin. The air conditioning unit 101 internally comprises a fresh air valve and a return air valve, the fresh air system can cooperate with the fresh air valve and the return air valve to CO in a carriage according to the calculated fresh air quantity required 2 The concentration was adjusted.
The embodiment provides a control method of a fresh air system, as shown in fig. 2, comprising the following steps:
step S201, under the condition that the change value of the number of people in the target space where the fresh air system is located reaches a preset starting value, according to the CO in the target space 2 Influence factor of concentration, current timeCO 2 Fresh air CO of concentration and fresh air system 2 Concentration and preset target CO 2 And calculating the current required fresh air quantity by concentration.
Taking into account that a change in the number of people in the target space will result in CO in the target space 2 Variation of the amount of production, thereby affecting the CO in the target space 2 The concentration can be used for determining whether the required fresh air quantity needs to be calculated or not by detecting the change condition of the number of people in the target space where the fresh air system is located at fixed time and carrying out air quantity adjustment. Further, when the change value of the number of people exceeds the starting value, whether air quantity adjustment is needed or not is judged according to the calculated fresh air quantity required. The preset tuning value is used for eliminating disturbance deviation, such as the change of the number of people caused by walking of people in the subway carriage, so that the tuning value can be determined through the disturbance deviation and the minimum value of air quantity adjustment in the fresh air system.
When the required fresh air quantity is calculated, CO in the target space 2 The concentration influencing factor can be the concentration of CO in the target space 2 Any factor affecting concentration, e.g. number of people in target space, average CO 2 Concentration release amount, volume of target space, etc. In addition, in the fresh air system, CO in the target space is controlled mainly by adjusting fresh air quantity 2 Concentration, and fresh air volume is regulated by fresh air CO of fresh air system 2 Influence of concentration, therefore at the present CO 2 In case the concentration is less than a preset limit value, in order to reasonably control the CO in the target space 2 Concentration can be based on CO 2 Influence factor of concentration, current CO 2 Concentration, fresh air CO 2 Concentration and preset target CO 2 The concentration calculates the current demand fresh air volume. Wherein, fresh air CO 2 Concentration can be through setting up new trend CO in new trend mouth department of new trend system 2 A concentration sensor. The specific calculation mode can be a formula for eliminating toxic and harmful substances, which is proposed by the similar field, such as the air purification industry, or an algorithm model can be established for calculating the required fresh air quantity according to a neural network related algorithm, and the parameters are used as the input of the model to output to obtain the current required fresh air quantity.
Step S202, calculating a difference value between the current demand fresh air quantity and the historical demand fresh air quantity to obtain a first demand difference value under the condition that the current demand fresh air quantity is larger than or equal to the previously calculated historical demand fresh air quantity; and calculating a difference value between the current gear opening fresh air quantity and the preset next gear opening fresh air quantity in the fresh air system to obtain a first opening difference value.
It can be understood that the fresh air quantity of the history demand calculated in the previous time is calculated under the condition that the change value of the number of people in the previous time reaches the preset starting value. If the current required fresh air quantity is greater than or equal to the historical required fresh air quantity calculated in the previous time, the required fresh air quantity in the current target space is not reduced compared with the historical required fresh air quantity, and the air quantity adjustment is possibly required.
For the fresh air system, frequent air volume adjustment will affect the service life of related devices in the fresh air system, such as an actuator, so that if the current required fresh air volume is greater than or equal to the previous historical required fresh air volume, it should be further determined whether the fresh air system needs air volume adjustment, where the determination mode may be that a difference value between the current gear opening fresh air volume and the adjacent larger gear opening fresh air volume is calculated as a first opening difference value, and the opening fresh air volume is generally the unit fresh air volume arranged from small to large under a group of different fresh air device and return air device opening combinations, so that the adjacent larger gear opening fresh air volume of the current gear opening fresh air volume is the next gear opening fresh air volume.
Wherein, the dividing granularity of the fresh air quantity of the unit can be used for adjusting the air quantity of the CO according to the fresh air system before the fresh air system is used for adjusting the air quantity 2 The control accuracy of the concentration and the inherent characteristics of the equipment such as the actuator are determined, and in general, the number of fresh air flows of a group of units can be 3, 5, 10 and the like.
Step S203, controlling the fresh air system to perform air volume adjustment on the target space according to the current demand fresh air volume to adjust CO in the target space when the first demand difference is greater than or equal to the first opening difference 2 Concentration of CO reaching target 2 Concentration.
When the first demand difference is greater than or equal to the first opening difference, it means that the increasing range of the current demand fresh air quantity exceeds the interval value of the preset opening adjustment gear of the system, the fresh air system needs to perform air quantity adjustment on the target space, and the fresh air system is controlled to perform air quantity adjustment on the target space according to the demand fresh air quantity obtained by current calculation, specifically, the opening of a fresh air valve and a return air valve in the fresh air system can be adjusted according to the demand fresh air quantity, and after the fresh air quantity of the fresh air system reaches the demand fresh air quantity, the CO in the target space is adjusted 2 The concentration can reach the target CO 2 Concentration.
The method comprises the steps of detecting the number of people in a target space where a fresh air system is located at fixed time, and when the current number of people change value in the target space reaches a preset starting value, determining the CO in the target space 2 Influence factor of concentration, current CO 2 Fresh air CO of concentration and fresh air system 2 Concentration and preset target CO 2 Calculating the current demand fresh air quantity, calculating to obtain a first demand difference value between the current demand fresh air quantity and the historical demand fresh air quantity when the current demand fresh air quantity is increased, calculating a first opening difference value between the current opening fresh air quantity and the next opening fresh air quantity, and controlling the fresh air system to perform air quantity adjustment on a target space if the first demand difference value is larger than the first opening difference value so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching target 2 Concentration. The control method of the fresh air system provided by the embodiment can realize the CO in the target space 2 And the concentration is accurately regulated, so that the utilization rate of fresh air resources and the air quality of a target space are improved.
Based on step S201, when determining whether the change value of the number of people in the target space where the fresh air system is located reaches a preset set value, the method further includes the following steps:
step S301, detecting the number of people in a target space where the fresh air system is located at fixed time.
The number of people in the target space can be detected at preset time intervals by a number detection device in the target space, such as a vehicle network or a detection device formed by various sensors, and the like, and the number of people in the target space is acquired at fixed time and converted into a number signal to be transmitted to an actuator of the fresh air system.
The preset time interval can be determined by the control precision of the fresh air system and the service lives of related components.
Step S302, a difference in the number of people in the currently detected target space and the number of people in the previously detected target space is calculated.
Step S303, comparing the calculated difference of the number of people with a preset starting value, and if the difference of the number of people is larger than or equal to the preset starting value, determining that the change value of the number of people in the target space where the fresh air system is located reaches the preset starting value.
It can be understood that when the calculated difference of the number of people does not reach the preset starting value, the change of the number of people in the target space belongs to a relatively tiny change, and the CO in the target space is changed 2 Is not so much affected.
In one embodiment, the method further comprises:
step S401, calculating a difference value between the current demand fresh air quantity and the historical demand fresh air quantity to obtain a second demand difference value under the condition that the current demand fresh air quantity is smaller than the historical demand fresh air quantity; and calculating the difference between the current gear opening fresh air quantity and the preset last gear opening fresh air quantity to obtain a second opening difference value.
When the current required fresh air quantity is smaller than the historical required fresh air quantity, which means that the required fresh air quantity in the target space is reduced, the opening fresh air quantity of the current gear in the fresh air system is required to be compared with the opening fresh air quantity of the next smaller gear, namely the opening fresh air quantity of the last gear, so that a difference value between the opening fresh air quantity of the current gear and the opening fresh air quantity of the last gear is obtained and is used as a second opening difference value.
Step S402, controlling the fresh air system to perform air volume adjustment on the target space according to the current demand fresh air volume to enable CO in the target space when the second demand difference is greater than or equal to the second opening difference 2 Concentration of CO reaching target 2 Concentration.
Similarly, when the second demand is poorWhen the value is greater than or equal to the second opening difference value, the falling value of the current required fresh air quantity exceeds the set interval value of the gear of the adjusting opening, so that the fresh air system is controlled to adjust the air quantity of the target space so as to adjust the CO in the target space 2 Concentration of CO reaching target 2 Concentration.
In one embodiment, the CO in the target space 2 The influence factor of the concentration comprises the current number of people in the target space and the average CO in the target space 2 The release amount, the target space volume and the preset opening time interval of the fresh air system.
In one embodiment, the CO is determined based on the number of people in the target space 2 Release amount, target space volume, opening time interval, current CO of target space 2 Concentration, fresh air CO 2 Concentration and target CO 2 The concentration and the current required fresh air quantity are calculated, and a specific solving mode can be expressed as follows:
wherein n is the number of people in the target space, and x is the known average CO 2 The release amount, V is the target space volume, tau is the opening time interval, y 0 Is fresh air CO 2 Concentration, y 1 For the current CO in the target space 2 Concentration, y 2 For target CO 2 Concentration.
The number of passengers in the target space can be set to be a fixed value if the number of passengers is small and fixed, and the number of passengers in the carriage can be calculated as the number of passengers in the target space by considering the passenger carrying rate signal provided by the vehicle network in places with large passenger flow, such as subway carriages. Average CO 2 The release amount is a known value, the volume of the target space can be specifically the carriage volume and the like, the opening time interval in the fresh air system can be the set value of the fresh air system, and the fresh air CO 2 The concentration can be detected by a fresh air system. In addition, due to the current CO 2 CO collected by concentration sensor 2 Concentration ofMost of the volume concentration C can be converted into mass concentration y according to a conversion formula for calculation, and a specific conversion formula can be as follows:
wherein M is CO 2 Gram moles of gas.
In one embodiment, the fresh air system includes fresh air equipment and return air equipment, and before calculating the required fresh air volume, the method further includes the following steps:
step S501, fresh air volume measurement is performed under multiple groups of fresh air equipment opening degrees and return air equipment opening degrees of a fresh air system.
In the fresh air system, the fresh air quantity is generally adjusted and controlled by adjusting the opening degrees of fresh air equipment and return air equipment in the fresh air system, and particularly the opening degrees of a fresh air valve and a return air valve, wherein the opening degrees can be determined by the number of seconds of closing after the full-open self-check of the air valve. Taking subway carriages as an example, the fresh air quantity can be measured through the fan housing under different fresh air valve openings and return air valve openings after the train is loaded, and the corresponding fresh air quantity under a plurality of groups of different fresh air valve openings and return air valve openings is obtained according to test data obtained through measurement. In general, the number of sets of test data may be determined based on accuracy requirements and actual damper adjustment accuracy.
Step S502, recording the combined opening of the fresh air device and the return air device under different fresh air volumes, and establishing a mapping relation between the fresh air volumes and the combined opening.
After the combined opening degrees of the fresh air valve and the return air valve are recorded to obtain different fresh air quantities, a corresponding mapping relation can be established for the fresh air quantities and the corresponding combined opening degrees, and the mapping relation can be stored in a server in a data storage mode. When the fresh air system is in the subsequent adjusting process, the corresponding combined opening degree can be found directly through the determined fresh air quantity.
Further, based on the above steps S501 and S502, in the case where the first demand difference is greater than or equal to the first opening difference, according to the current demandThe fresh air system for controlling the fresh air quantity adjusts the air quantity of the target space so as to enable CO in the target space to be 2 Concentration of CO reaching target 2 A concentration comprising:
step S601, matching the combination opening degree from the mapping relation according to the required fresh air quantity.
After the current required fresh air volume is calculated, the combined opening degree matched with the required fresh air volume is found out from the mapping relation established in the step S502.
And step S602, the actual opening degrees of the fresh air equipment and the return air equipment are respectively adjusted according to the combined opening degrees.
Specifically, the fresh air system can be controlled, and the actual opening of the fresh air valve and the actual opening of the return air valve are respectively adjusted according to the matched combined opening value, so that the obtained fresh air quantity is the required fresh air quantity.
In one embodiment, after the required fresh air volume is calculated, the required fresh air volume is corrected according to actual operation data in the target space.
Because the calculated required fresh air quantity is a numerical value under an ideal state, in order to improve the air quantity regulation effect of the fresh air system, the required fresh air quantity can be further calculated and corrected on the basis of the required fresh air quantity according to actual conditions, so that the final required fresh air quantity is obtained. For example, it may be based on actual operational data, such as the current CO in the target space 2 The concentration, the opening values of the fresh air equipment and the return air equipment in the fresh air system and the like are increased by a certain proportionality coefficient and a correction constant for the original required fresh air quantity, and the operation data can be input into a fitting tool to obtain a fitted curve formula for correcting the required fresh air quantity.
The method comprises the steps of detecting the number of people in a target space where a fresh air system is located at fixed time, and when the current number of people change value in the target space reaches a preset starting value, determining the CO in the target space 2 Influence factor of concentration, current CO 2 Concentration, fresh air CO of fresh air system 2 Concentration and preset target CO 2 Calculating the current demand fresh air quantity according to the concentration, and calculating to obtain the current demand fresh air quantity and the historical demand when the current demand fresh air quantity is increased The first demand difference of the fresh air quantity is calculated, and if the first demand difference is larger than the first opening difference, the fresh air system is controlled to adjust the air quantity of the target space so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching target 2 Concentration, thereby on the premise of excessively consuming related components in the fresh air system, CO in the target space is reduced 2 The concentration is accurately adjusted, when the current required fresh air quantity is reduced, a second required difference value between the current required fresh air quantity and the historical required fresh air quantity is obtained, a second opening difference value between the current opening fresh air quantity and the last opening fresh air quantity is calculated, if the second required difference value is larger than the second opening difference value, the fresh air system is controlled to adjust the air quantity of the target space, a mapping relation is established between the combined opening of the fresh air quantity and the fresh air system, when the required fresh air quantity is calculated, the corresponding combined opening is directly matched according to the mapping relation, so that the adjusting efficiency of the fresh air system to fresh air equipment and return air equipment is improved, and the utilization rate of fresh air resources and the air quality of the target space are finally improved.
In one embodiment, as shown in fig. 3, a control device of a fresh air system is provided, which includes an air volume calculating module 32, a difference calculating module 34, and an adjusting and judging module 36:
The air volume calculating module 32 is configured to, when the change value of the number of people in the target space where the fresh air system is located reaches a preset starting value, calculate a change value according to the CO in the target space 2 Influence factor of concentration, CO at present moment 2 Fresh air CO of concentration and fresh air system 2 Concentration and preset target CO 2 Calculating the current required fresh air quantity by concentration;
the difference calculating module 34 is configured to calculate a difference between the current demand fresh air volume and the historical demand fresh air volume to obtain a first demand difference when the current demand fresh air volume is greater than or equal to the previously calculated historical demand fresh air volume; calculating a difference value between the current gear opening fresh air quantity and a preset next gear opening fresh air quantity in the fresh air system to obtain a first opening difference value;
the adjustment and judgment module 36 is configured to control the fresh air system to perform air volume adjustment on the target space according to the fresh air volume of the current demand, so as to adjust CO in the target space when the first demand difference is greater than or equal to the first opening difference 2 Concentration of CO reaching target 2 Concentration.
According to the control device of the fresh air system, the number of people in the target space where the fresh air system is located is detected at fixed time, and when the current change value of the number of people in the target space reaches the preset starting value, the control device is controlled according to the CO in the target space 2 Influence factor of concentration, current CO 2 Concentration, fresh air CO of fresh air system 2 Concentration and preset target CO 2 Calculating the current demand fresh air quantity, calculating to obtain a first demand difference value between the current demand fresh air quantity and the historical demand fresh air quantity when the current demand fresh air quantity is increased, calculating a first opening difference value between the current opening fresh air quantity and the next opening fresh air quantity, and controlling the fresh air system to perform air quantity adjustment on a target space if the first demand difference value is larger than the first opening difference value so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching target 2 Concentration. The control device of the fresh air system provided by the embodiment of the application can realize the CO in the target space 2 And the concentration is accurately regulated, so that the utilization rate of fresh air resources and the air quality of a target space are improved.
In one embodiment, the control device 30 of the fresh air system further includes a people number detection module, where the people number detection module is configured to detect the number of people in the target space where the fresh air system is located at regular time, calculate a difference between the number of people in the currently detected target space and the number of people in the target space detected last time, compare the calculated difference with a preset starting value, and if the difference is greater than or equal to the preset starting value, determine that the change value of the number of people in the target space where the fresh air system is located reaches the preset starting value.
In one embodiment, the control device 30 of the fresh air system further includes a second difference comparison module, where the second difference comparison module is configured to calculate the current demand fresh air volume when the current demand fresh air volume is smaller than the historical demand fresh air volumeThe difference between the air quantity and the fresh air quantity of the historical demand is used for obtaining a second demand difference; calculating the difference between the current gear opening fresh air quantity and the preset previous gear opening fresh air quantity to obtain a second opening difference value, and controlling the fresh air system to perform air quantity adjustment on the target space according to the current demand fresh air quantity under the condition that the second demand difference value is greater than or equal to the second opening difference value so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching target 2 Concentration.
In one embodiment, the in-target space CO in the air volume calculation module 32 2 The influence factor of the concentration comprises the current number of people in the target space and the average CO in the target space 2 The release amount, the target space volume and the preset opening time interval of the fresh air system.
In one embodiment, the CO is determined based on the number of people in the target space 2 Release amount, target space volume, opening time interval, current CO of target space 2 Concentration, fresh air CO 2 Concentration and target CO 2 The concentration and the current required fresh air quantity are calculated, and a specific solving mode can be expressed as follows:
wherein n is the number of people in the target space, and x is the known average CO 2 The release amount, V is the target space volume, tau is the opening time interval, y 0 Is fresh air CO 2 Concentration, y 1 For the current CO in the target space 2 Concentration, y 2 For target CO 2 Concentration.
In one embodiment, the control device 30 of the fresh air system further includes a mapping establishment module, where the mapping establishment module is configured to measure fresh air volume under multiple sets of opening degrees of fresh air equipment and opening degrees of return air equipment of the fresh air system, record combined opening degrees of the fresh air equipment and the return air equipment under different fresh air volumes, and establish a mapping relationship between the fresh air volume and the combined opening degrees.
In one embodiment, the control device 30 of the fresh air system further includes an opening matching module, where the opening matching module is configured to match the combined opening from the mapping relationship according to the required fresh air volume, and adjust the actual openings of the fresh air device and the return air device according to the combined opening.
In one embodiment, the control device 30 of the fresh air system further includes an actual correction module, where the actual correction module is configured to correct the required fresh air volume according to the actual operation data in the target space after calculating the required fresh air volume.
For specific limitations regarding embodiments of the control device of the fresh air system, reference may be made to the above limitations on the control method of the fresh air system, which are not described herein. All or part of the modules in the control device of the fresh air system can be realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, as shown in FIG. 4, an electronic device is provided that includes a memory and a processor. The memory has stored therein a computer program, the processor of which is used to provide computing and control capabilities. The memory of the electronic device includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, where the transmission device is connected to the processor, and the input/output device is connected to the processor.
Optionally, in this embodiment, the processor executes the computer program to implement the following steps:
under the condition that the change value of the number of people in the target space where the fresh air system is positioned reaches a preset starting value, according to the CO in the target space 2 Influence factor of concentration, CO at present moment 2 Fresh air CO of concentration and fresh air system 2 Concentration and preset target CO 2 Calculating the current required fresh air quantity by concentration;
calculating a difference between the current demand fresh air quantity and the historical demand fresh air quantity to obtain a first demand difference value under the condition that the current demand fresh air quantity is larger than or equal to the previously calculated historical demand fresh air quantity; calculating a difference value between the current gear opening fresh air quantity and a preset next gear opening fresh air quantity in the fresh air system to obtain a first opening difference value;
when the first demand difference value is greater than or equal to the first opening difference value, controlling the fresh air system to adjust the air quantity of the target space according to the current demand fresh air quantity so as to enable CO in the target space 2 Concentration of CO reaching target 2 Concentration.
In one embodiment, the processor when executing the computer program further performs the steps of:
detecting the number of people in a target space where the fresh air system is located at fixed time;
Calculating a difference between the number of people in the currently detected target space and the number of people in the previously detected target space;
comparing the calculated difference of the number of people with a preset starting value, and if the difference of the number of people is larger than or equal to the preset starting value, determining that the change value of the number of people in the target space where the fresh air system is located reaches the preset starting value.
In one embodiment, the processor when executing the computer program further performs the steps of:
calculating a difference value between the current demand fresh air quantity and the historical demand fresh air quantity under the condition that the current demand fresh air quantity is smaller than the historical demand fresh air quantity so as to obtain a second demand difference value; calculating the difference between the current gear opening fresh air quantity and the preset previous gear opening fresh air quantity to obtain a second opening difference value;
when the second demand difference value is greater than or equal to the second opening difference value, controlling the fresh air system to adjust the air quantity of the target space according to the fresh air quantity of the current demand so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching target 2 Concentration.
In one embodiment, the CO in the target space 2 The influence factor of the concentration comprises the current number of people in the target space and the average CO in the target space 2 The release amount, the target space volume and the preset opening time interval of the fresh air system.
In one embodiment, the CO is determined based on the number of people in the target space 2 Release amount, target space volume, opening time interval, current CO of target space 2 Concentration, fresh air CO 2 Concentration and target CO 2 The concentration and the current required fresh air quantity are calculated, and a specific solving mode can be expressed as follows:
wherein n is the number of people in the target space, and x is the known average CO 2 The release amount, V is the target space volume, tau is the opening time interval, y 0 Is fresh air CO 2 Concentration, y 1 For the current CO in the target space 2 Concentration, y 2 For target CO 2 Concentration.
In one embodiment, the processor when executing the computer program further performs the steps of:
measuring fresh air quantity under the opening degree of a plurality of groups of fresh air equipment and the opening degree of return air equipment of a fresh air system;
and recording the combined opening of the fresh air device and the return air device under different fresh air volumes, and establishing a mapping relation between the fresh air volumes and the combined opening.
In one embodiment, the processor when executing the computer program further performs the steps of:
matching the combined opening degree from the mapping relation according to the required fresh air quantity;
and respectively adjusting the actual opening of the fresh air device and the actual opening of the return air device according to the combined opening.
In one embodiment, the processor when executing the computer program further performs the steps of:
and after the required fresh air quantity is calculated, correcting the required fresh air quantity according to the actual operation data in the target space.
It should be noted that, specific examples in this embodiment may refer to examples described in the foregoing embodiments and alternative implementations, and this embodiment is not repeated herein.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 5. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used for storing a preset configuration information set. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by the processor to realize the control method of the fresh air system.
In one embodiment, a computer device is provided, which may be a terminal. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by the processor, implements a method for controlling a fresh air system. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in FIG. 5 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
There is also provided in one embodiment a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
under the condition that the change value of the number of people in the target space where the fresh air system is positioned reaches a preset starting value, according to the CO in the target space 2 Influence factor of concentration, CO at present moment 2 Fresh air CO of concentration and fresh air system 2 Concentration and preset target CO 2 Calculating the current required fresh air quantity by concentration;
calculating a difference between the current demand fresh air quantity and the historical demand fresh air quantity to obtain a first demand difference value under the condition that the current demand fresh air quantity is larger than or equal to the previously calculated historical demand fresh air quantity; calculating a difference value between the current gear opening fresh air quantity and a preset next gear opening fresh air quantity in the fresh air system to obtain a first opening difference value;
and under the condition that the first demand difference value is greater than or equal to the first opening difference value, controlling the fresh air system to perform air quantity adjustment on the target space according to the current demand fresh air quantity so as to enable the concentration of CO2 in the target space to reach the target concentration of CO 2.
In one embodiment, the processor when executing the computer program further performs the steps of:
Detecting the number of people in a target space where the fresh air system is located at fixed time;
calculating a difference between the number of people in the currently detected target space and the number of people in the previously detected target space;
comparing the calculated difference of the number of people with a preset starting value, and if the difference of the number of people is larger than or equal to the preset starting value, determining that the change value of the number of people in the target space where the fresh air system is located reaches the preset starting value.
In one embodiment, the processor when executing the computer program further performs the steps of:
calculating a difference value between the current demand fresh air quantity and the historical demand fresh air quantity under the condition that the current demand fresh air quantity is smaller than the historical demand fresh air quantity so as to obtain a second demand difference value; calculating the difference between the current gear opening fresh air quantity and the preset previous gear opening fresh air quantity to obtain a second opening difference value;
when the second demand difference value is greater than or equal to the second opening difference value, controlling the fresh air system to adjust the air quantity of the target space according to the fresh air quantity of the current demand so as to enable CO in the target space to be adjusted 2 Concentration of CO reaching target 2 Concentration.
In one embodiment, the CO in the target space 2 The influence factor of the concentration comprises the current number of people in the target space and the average CO in the target space 2 The release amount, the target space volume and the preset opening time interval of the fresh air system.
In one embodiment, the CO is determined based on the number of people in the target space 2 Release amount, target space volume, opening time interval, current CO of target space 2 Concentration, fresh air CO 2 Concentration and target CO 2 The concentration and the current required fresh air quantity are calculated, and a specific solving mode can be expressed as follows:
/>
wherein n is the number of people in the target space, and x is the known average CO 2 The release amount, V is the target space volume, tau is the opening time interval, y 0 Is fresh air CO 2 Concentration, y 1 For the current CO in the target space 2 Concentration, y 2 For target CO 2 Concentration.
In one embodiment, the processor when executing the computer program further performs the steps of:
measuring fresh air quantity under the opening degree of a plurality of groups of fresh air equipment and the opening degree of return air equipment of a fresh air system;
and recording the combined opening of the fresh air device and the return air device under different fresh air volumes, and establishing a mapping relation between the fresh air volumes and the combined opening.
In one embodiment, the processor when executing the computer program further performs the steps of:
matching the combined opening degree from the mapping relation according to the required fresh air quantity;
and respectively adjusting the actual opening of the fresh air device and the actual opening of the return air device according to the combined opening.
In one embodiment, the processor when executing the computer program further performs the steps of:
and after the required fresh air quantity is calculated, correcting the required fresh air quantity according to the actual operation data in the target space.
Those skilled in the art will appreciate that implementing all or part of the above-described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. The control method of the fresh air system is characterized in that the fresh air system comprises fresh air equipment and return air equipment, and the method comprises the following steps:
under the condition that the change value of the number of people in the target space where the fresh air system is positioned reaches a preset starting value, according to the CO in the target space 2 Influence factor of concentration, CO at present moment 2 Concentration, fresh air CO of fresh air system 2 Concentration and preset target CO 2 Calculating the current required fresh air quantity by concentration; the influence factors of the concentration of CO2 in the target space comprise the current number of people in the target space, the average CO2 release amount in the target space, the volume of the target space and a preset opening time interval of the fresh air system;
calculating a difference between the current demand fresh air quantity and the historical demand fresh air quantity to obtain a first demand difference value under the condition that the current demand fresh air quantity is larger than or equal to the previously calculated historical demand fresh air quantity; calculating a difference value between the current gear opening fresh air quantity and the preset next gear opening fresh air quantity in the fresh air system to obtain a first opening difference value;
when the first demand difference is greater than or equal to the first opening difference, controlling the fresh air system according to the current demand fresh air volumeThe air quantity of the target space is uniformly regulated so as to lead the CO in the target space to be 2 Concentration of CO reaching the target 2 Concentration;
wherein, before calculating the required fresh air quantity:
measuring fresh air quantity under the opening degree of a plurality of groups of fresh air equipment and the opening degree of return air equipment of the fresh air system;
And recording the combined opening of the fresh air device and the return air device under different fresh air volumes, and establishing a mapping relation between the fresh air volume and the combined opening.
2. The method for controlling a fresh air system according to claim 1, further comprising:
detecting the number of people in a target space where the fresh air system is located at fixed time;
calculating a difference between the number of people in the currently detected target space and the number of people in the previously detected target space;
comparing the calculated difference of the number of people with the preset adjustment value, and if the difference of the number of people is larger than or equal to the preset adjustment value, determining that the change value of the number of people in the target space where the fresh air system is located reaches the preset adjustment value.
3. The method according to claim 1, wherein the method further comprises:
calculating a difference between the current demand fresh air quantity and the historical demand fresh air quantity under the condition that the current demand fresh air quantity is smaller than the historical demand fresh air quantity so as to obtain a second demand difference; calculating the difference between the current gear opening fresh air quantity and the preset previous gear opening fresh air quantity to obtain a second opening difference value;
When the second demand difference value is greater than or equal to the second opening difference value, controlling the fresh air system to perform air volume adjustment on the target space according to the current demand fresh air volume so as to enable CO in the target space to be adjusted 2 The concentration reaches the targetCO 2 Concentration.
4. The method according to claim 1, wherein the people average CO according to the current number of people in the target space 2 The release amount, the target space volume, the opening time interval, the current CO of the target space 2 Concentration of the fresh air CO 2 Concentration and the target CO 2 Concentration, calculating the current required fresh air quantityLThe specific solving mode is expressed as follows:
wherein,nfor the current number of people in the target space,xis known as human average CO 2 The amount of release is such that,Vfor the target volume of space, τ is the opening time interval,y 0 for the fresh air CO 2 The concentration of the water in the water is higher,y 1 for the current CO in the target space 2 The concentration of the water in the water is higher,y 2 for the target CO 2 Concentration.
5. The method according to claim 1, wherein the fresh air system is controlled to perform air volume adjustment on the target space according to the current required fresh air volume so as to enable the CO in the target space when the first required difference is greater than or equal to the first opening difference 2 Concentration of CO reaching the target 2 A concentration comprising:
matching the combined opening degree from the mapping relation according to the required fresh air quantity;
and respectively adjusting the actual opening of the fresh air device and the actual opening of the return air device according to the combined opening.
6. The method according to any one of claims 1 to 5, further comprising:
and after the required fresh air quantity is calculated, correcting the required fresh air quantity according to actual operation data in a target space.
7. The utility model provides a controlling means of new trend system, its characterized in that, new trend system includes new trend equipment and return air equipment, the device includes that amount of wind calculates module, difference calculates module, adjusts judgement module and mapping establishment module:
the air volume calculation module is used for calculating the air volume according to the CO in the target space when the change value of the number of people in the target space where the fresh air system is located reaches a preset starting value 2 Influence factor of concentration, CO at present moment 2 Concentration, fresh air CO of fresh air system 2 Concentration and preset target CO 2 Calculating the current required fresh air quantity by concentration; the influence factors of the concentration of CO2 in the target space comprise the current number of people in the target space, the average CO2 release amount in the target space, the volume of the target space and a preset opening time interval of the fresh air system;
The difference calculating module is used for calculating a difference between the current demand fresh air quantity and the historical demand fresh air quantity to obtain a first demand difference value under the condition that the current demand fresh air quantity is larger than or equal to the historical demand fresh air quantity calculated in the previous time; calculating a difference value between the current gear opening fresh air quantity and the preset next gear opening fresh air quantity in the fresh air system to obtain a first opening difference value;
the adjusting and judging module is configured to control, when the first demand difference is greater than or equal to the first opening difference, the fresh air system to perform air volume adjustment on the target space according to the current demand fresh air volume, so that CO in the target space is adjusted 2 Concentration of CO reaching the target 2 Concentration;
the mapping establishment module is used for measuring fresh air quantity under the opening degree of a plurality of groups of fresh air equipment and the opening degree of return air equipment of the fresh air system, recording the combined opening degree of the fresh air equipment and the return air equipment under different fresh air quantity, and establishing the mapping relation between the fresh air quantity and the combined opening degree.
8. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, the processor being arranged to run the computer program to perform the method of controlling the fresh air system according to any one of claims 1 to 6.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor performs the method of controlling a fresh air system according to any one of claims 1 to 6.
10. A storage medium, characterized in that a computer program is stored in the storage medium, wherein the computer program is arranged to execute the control method of the fresh air system according to any one of claims 1 to 6 when run.
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