A control method of a fresh air air conditioner and humidification integrated device

Abstract

The present application relates to the technical field of intelligent control, in particular to a control method of fresh air conditioner humidification integrated equipment, comprising the following steps: collecting pressure difference, pressure loss, current, air volume, humidity and time, forming a synchronous reference, combining current, water level and gear to determine steam production, identifying wet mist according to outlet humidity increment, calculating delivery waiting, reviewing end humidity and air path resistance, and adjusting humidification gear. In the present application, a synchronous reference is formed by the same cycle pressure difference, pressure loss, fan current, air volume and humidity at two places, and extreme values are removed and mean values are smoothed to suppress transient disturbance. The real steam production is verified by combining humidifier current, water level drop, gear and resolution. The formation of wet mist is confirmed by outlet humidity increment and error limit. The air outlet detection opportunity is matched according to air duct volume, air volume and response time. When there is no effective humidity increment, the source of resistance is located. When the limit is exceeded, the gear is downshifted. Condensation, fan load abnormality and invalid energy consumption are reduced. The accuracy of link causal verification is improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent control technology, and in particular to a control method for an integrated fresh air conditioning and humidification device. Background Technology

[0002] The field of intelligent control technology encompasses the acquisition, judgment, adjustment, and execution of control functions related to the operation status of controlled objects. Its core components include sensor data acquisition, controller logic judgment, execution component command output, operating mode switching, parameter threshold setting, and abnormal state feedback. This technology typically revolves around specific control variables such as temperature, humidity, gas concentration, particulate matter concentration, airflow, valve opening, motor speed, and humidification capacity. It coordinates the operation of indoor environmental control devices through the cooperation of components such as temperature and humidity sensors, carbon dioxide sensors, particulate matter sensors, water level sensors, controllers, fans, fresh air valves, compressors, humidifiers, and solenoid valves.

[0003] One control method for an integrated fresh air conditioning and humidification device refers to an operational control approach for devices integrating fresh air, cooling, heating, and humidification functions. The technical aspects it addresses include indoor temperature acquisition, indoor humidity acquisition, indoor carbon dioxide concentration acquisition, indoor particulate matter concentration acquisition, outdoor air condition acquisition, water tank level detection, fresh air valve opening control, fan speed control, compressor start / stop control, humidifier water supply control, and operating mode selection. This control method typically obtains operational data through temperature and humidity sensors, air quality sensors, water level detection devices, and a controller. The controller then sends corresponding control commands to the fresh air valve, fan, compressor, humidifier, water pump, or solenoid valve according to the set temperature value, set humidity value, air quality limit, and water level status.

[0004] Existing controls primarily rely on indoor temperature and humidity, air quality, water level, and set thresholds as triggers. The control chain is biased towards end-environment deviations, lacking segmented identification of water consumption and steam generation, humid fog formation, duct transport, and resistance accumulation. Indoor humidity is affected by spatial mixing and sensor location, resulting in significant feedback lag. Water level detection is mostly used for water shortage judgments and is difficult to reflect the actual steam generation per unit cycle. When filters are dusty, humidification sections are clogged, or airflow is low, the indoor end may still show dryness. The controller continues to increase humidification output, which can easily cause localized over-humidification in the duct, sudden increases in humidity at the air outlet, condensation on cold surfaces, increased fan current, and delayed maintenance. The source of the fault is masked by environmental deviations, and comfort and operational safety margins decrease simultaneously. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a control method for an integrated fresh air conditioning and humidification device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a control method for a fresh air conditioning and humidification integrated device, comprising the following steps:

[0007] S1: Collect the air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity and air outlet relative humidity in the integrated fresh air conditioning and humidification equipment, as well as the collection time, filter the synchronous sampling data within the same operating cycle, and generate a synchronous benchmark group;

[0008] S2: Based on the synchronization reference group, detect the humidifier's operating current, water tank level, and power setting, obtain the operating current range of the power setting and the resolution of the water level sensor, calculate the water level drop, determine the steam production conditions, and obtain the steam production link marker.

[0009] S3: Call the steam generation link marker, collect the relative humidity at the humidification section outlet, obtain the humidity sensor resolution and indication error, calculate the outlet relative humidity increment, determine the wet fog formation boundary, and obtain the wet fog formation marker;

[0010] S4: Based on the wet fog formation mark, obtain the duct volume, actual air volume and humidity sensor response time, calculate the water vapor delivery waiting time, and obtain the water vapor delivery waiting time;

[0011] S5: Based on the water vapor delivery waiting time, collect the relative humidity at the air outlet, air filter pressure difference, humidification section pressure loss, actual air volume, target air volume and blower current, obtain the final resistance of the air filter, allowable pressure loss of the humidification section, allowable air volume deviation and blower rated current, determine the terminal response and air path status, and generate resistance position markers.

[0012] S6: For the resistance position mark, call the humidifier power level, humidification section outlet relative humidity, relative humidity set value and relative humidity set value allowable deviation, determine the allowable humidity range and mark status, adjust the power level, and establish control level command.

[0013] As a further embodiment of the present invention, the synchronization reference group includes a filter pressure difference reference value, an intra-section pressure loss reference value, a fan load reference value, a ventilation volume reference value, an intra-section humidity reference value, an outlet air humidity reference value, and a periodic time scale. The steam generation link markers specifically include a current matching marker, a water consumption marker, and a steam generation validity marker. The wet fog formation markers include a humidity transition marker, a droplet generation marker, and a tolerance limit violation marker. The water vapor delivery waiting time specifically refers to the duct dwell time, the sensor lag time, and the delivery judgment time. The resistance position markers include a filter blockage marker, a wet section blockage marker, an insufficient air volume marker, and a fan overload marker. The control gear command specifically includes a downshift target, an adjustment range, and a gear change record.

[0014] As a further aspect of the present invention, step S1 includes:

[0015] S11: Collect the air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity, air outlet relative humidity and collection time in the integrated fresh air conditioning humidification equipment. Match the collection time with the equipment operation cycle mark line by line, filter the synchronous sampling data within the same operation cycle, and generate the cycle synchronous sampling quantity.

[0016] S12: Call the sampling sequences of air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity and air outlet relative humidity in the periodic synchronous sampling quantity, compare the arrangement position of the values ​​in each sampling sequence, remove the maximum and minimum values, and obtain the sampling quantity of the removed sequence.

[0017] S13: Based on the sampled values ​​of the air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity, and air outlet relative humidity, calculate the ratio of the sum of the values ​​to the number of samples, calculate the average of the remaining sampled values, and generate a synchronous benchmark group.

[0018] As a further aspect of the present invention, step S2 includes:

[0019] S21: Based on the aforementioned synchronous reference group, detect the humidifier's operating current, water tank level, and power level. Arrange the operating current value, water tank level value, and power level value according to the acquisition time. Group the sampling rows with the same power level value into the same power level sequence. Filter the upper limit value of the operating current, the lower limit value of the operating current, and the water level sensor resolution within the power level sequence to generate the power level operation parameter range.

[0020] S22: Call the gear operation parameter range, select the water level value of the previous water tank and the water level value of the next water tank according to the adjacent relationship of the collection time, subtract the water level value of the next water tank from the water level value of the previous water tank, calculate the water level difference of the water tanks at adjacent collection times, and record the positive part of the difference as the drop value to obtain the water level drop amount;

[0021] S23: Based on the water level drop, call the upper limit of the working current, the lower limit of the working current, and the water level sensor resolution in the gear operation parameter range, determine that the humidifier working current is between the upper limit of the working current and the lower limit of the working current and the water level drop is greater than the water level sensor resolution, and obtain the steam generation link mark.

[0022] As a further aspect of the present invention, step S3 includes:

[0023] S31: Call the steam production link marker, collect the relative humidity at the humidification section outlet, pair the steam production link marker in the same sampling row with the relative humidity at the humidification section outlet, determine the sampling row affiliation according to the marker value, retain the valid steam production identifier to establish the humidity value corresponding to the sampling row, and generate the steam production humidity sequence value.

[0024] S32: Based on the steam production humidity sequence value, call the average relative humidity of the humidification section outlet in the synchronous benchmark group, subtract the average humidity of the same item from the humidity value at the same collection time, calculate the humidity difference at each collection time, arrange the difference in the order of the valid steam production identifier to obtain the humidity increment value.

[0025] S33: Based on the humidity increment value, obtain the humidity sensor resolution and humidity sensor indication error, add the two to obtain the humidity discrimination threshold value, compare the humidity increment value with the humidity discrimination threshold value item by item, determine that the humidity increment value is greater than the humidity discrimination threshold value and the effective vapor production mark is established, and obtain the wet fog formation mark.

[0026] As a further aspect of the present invention, step S4 includes:

[0027] S41: Based on the wet fog formation marker, read the marker value according to the collection time, determine whether the fog droplet generation identifier is valid, select the sampling row where the fog droplet generation identifier is valid, call the air duct volume, actual air volume and humidity sensor response time of the same sampling row, and generate a set of transport parameters.

[0028] S42: Call the transport parameter group, read the duct volume and actual air volume line by line according to the established state acquisition time, divide the duct volume by the actual air volume, calculate the time required for water vapor to complete one volume replacement of the air in the duct from the humidification section to the air outlet, and obtain the duct replacement time.

[0029] S43: Based on the duct replacement time, call the humidity sensor response time at the same acquisition time in the transport parameter group, add the duct replacement time and humidity sensor response time row by row, calculate the waiting time value row by row, and obtain the water vapor transport waiting time.

[0030] As a further aspect of the present invention, step S5 includes:

[0031] S51: Based on the water vapor delivery waiting time, collect the relative humidity of the air outlet, air filter pressure difference, humidification section pressure loss, actual air volume, target air volume, and blower current at the time of waiting end, obtain the final resistance of the air filter, allowable pressure loss of the humidification section, allowable air volume deviation, and blower rated current, establish peer value pairing, and generate a set of operating condition parameters after waiting.

[0032] S52: Call the waiting condition parameter group, subtract the average relative humidity of the air outlet from the relative humidity of the air outlet in the synchronization reference group, calculate the relative humidity increment of the air outlet, and sum the resolution of the humidity sensor and the error of the humidity sensor reading. If the increment does not reach the sum value, the air outlet humidity is marked as not reached.

[0033] S53: Based on the air supply humidity not reaching the mark, call the waiting condition parameter group, compare the air filter pressure difference with the final resistance, the humidification section pressure loss with the allowable pressure loss, the actual air volume deviation with the allowable air volume deviation, and the air supply fan current with the rated current, and generate a resistance position mark.

[0034] As a further aspect of the present invention, step S6 includes:

[0035] S61: For the resistance position mark, call the humidifier power level, humidification section outlet relative humidity, relative humidity set value and relative humidity set value allowable deviation, match the resistance position mark with the four values ​​according to the collection time, add the relative humidity set value and allowable deviation to obtain the upper limit of humidity allowable value.

[0036] S62: Based on the upper limit of humidity allowable value, call the resistance position mark and the relative humidity of the humidification section outlet at the same collection time, compare the relative humidity of the humidification section outlet with the upper limit of humidity allowable value, determine that the outlet humidity exceeds the upper limit and the resistance position mark is in the established state, and obtain the downshift trigger mark.

[0037] S63: Based on the downshift trigger flag, call the humidifier power level at the same collection time. When it is determined that the downshift trigger flag is in the established state, downshift the current level by one level according to the level sequence, record the level before adjustment and the level after adjustment, and establish a control level command.

[0038] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0039] In this invention, a synchronous benchmark is established using the pressure difference, pressure loss, fan current, air volume, and humidity at two locations within the same operating cycle. Transient fluctuation interference is reduced through extreme value elimination and mean smoothing. The actual steam production is verified using humidifier current, water level drop, power setting, and sensor resolution. The formation of wet mist is confirmed by combining the outlet humidity increment with the error limit. The timing of air outlet detection is matched based on duct volume, air volume, and sensor response time. When there is no effective increase in humidity, the source of resistance is located. When the outlet humidity exceeds the limit and resistance is established, the power setting is reduced to decrease local moisture accumulation, condensation, abnormal fan load, and ineffective energy consumption. This shifts the control judgment from single-point response to link causal verification, improving the reliability of humidity regulation boundaries. Attached Figure Description

[0040] Figure 1 This is a flowchart of the main steps of the present invention. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] Please see Figure 1 A control method for a fresh air conditioning and humidification integrated device includes the following steps:

[0044] S1: Collect the air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity, air outlet relative humidity and collection time in the integrated fresh air conditioning humidification equipment. Filter the synchronous sampling data within the same operating cycle according to the collection time, remove the maximum and minimum values ​​in each sampling sequence, calculate the average of the remaining sampling values, and generate a synchronous benchmark group.

[0045] S2: Based on the synchronous reference group, detect the humidifier's operating current, water tank level, and power setting, obtain the operating current range corresponding to the humidifier's power setting and the water level sensor resolution, calculate the water level drop based on the water tank level difference between adjacent acquisition times, and determine when the humidifier's operating current is within the operating current range and the water level drop is greater than the water level sensor resolution to obtain the steam generation link marker.

[0046] S3: Call the steam generation link marker, collect the relative humidity at the humidification section outlet, obtain the humidity sensor resolution and humidity sensor indication error, calculate the relative humidity increment at the humidification section outlet based on the relative humidity at the humidification section outlet in the synchronization reference group, compare the relative humidity increment at the humidification section outlet with the humidity sensor resolution, humidity sensor indication error and value, and obtain the wet fog formation marker;

[0047] S4: Based on the wet fog formation marker, when the wet fog formation marker is in the established state, obtain the duct volume, actual air volume and humidity sensor response time. Calculate the duct replacement time from the humidification section to the air outlet based on the duct volume and actual air volume, and add the duct replacement time to the humidity sensor response time to obtain the water vapor delivery waiting time.

[0048] S5: Based on the waiting time for water vapor delivery, after the waiting time ends, collect the relative humidity of the air outlet, air filter differential pressure, humidification section pressure loss, actual air volume, target air volume, and blower current. Also obtain the final resistance of the air filter, the allowable pressure loss of the humidification section, the allowable deviation of air volume, and the rated current of the blower. Calculate the relative humidity increment of the air outlet by calling the relative humidity of the air outlet in the synchronous reference group. If the relative humidity increment of the air outlet does not reach the sum of the humidity sensor resolution and the humidity sensor indication error, compare the air filter differential pressure with the final resistance of the air filter, the humidification section pressure loss with the allowable pressure loss of the humidification section, the actual air volume with the target air volume, the allowable deviation of air volume, and the blower current with the blower rated current to generate resistance position markers.

[0049] S6: For the resistance position mark, call the humidifier power level, humidification section outlet relative humidity, relative humidity set value and relative humidity set value allowable deviation. If the humidification section outlet relative humidity is higher than the upper limit of the allowable range formed by the relative humidity set value and the relative humidity set value allowable deviation and the resistance position mark is established, the humidifier power level is downgraded by one level and the level change is recorded to establish a control level command.

[0050] The synchronization reference group includes the filter pressure difference reference value, the pressure loss reference value within the section, the fan load reference value, the ventilation volume reference value, the humidity reference value at the section entrance, the air outlet humidity reference value, and the cycle time stamp. The steam generation link markers specifically include the current matching marker, the water consumption marker, and the effective steam generation marker. The wet fog formation markers include the humidity transition marker, the droplet generation marker, and the tolerance limit violation marker. The water vapor delivery waiting time specifically refers to the duct dwell time, the sensor lag time, and the delivery judgment time. The resistance position markers include the filter element blockage marker, the wet section blockage marker, the insufficient air volume marker, and the fan overload marker. The control gear command specifically includes the downshift target, the adjustment range, and the gear change record.

[0051] The steps to obtain S1 are as follows:

[0052] S11: Collect the air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity, air outlet relative humidity and collection time in the integrated fresh air conditioning humidification equipment. Match the collection time with the equipment operation cycle mark line by line, filter the synchronous sampling data within the same operation cycle, and generate the cycle synchronous sampling quantity.

[0053] First, based on the continuous sampling records of the integrated air conditioning and humidification equipment, the following parameters are extracted from each line of records: air filter differential pressure, humidification section pressure loss, blower current, actual air volume, relative humidity at the humidification section outlet, relative humidity at the air outlet, sampling sequence number, and operating cycle identifier. The sampling sequence number is generated according to the order of collection time, and there is a one-to-one correspondence between the sampling sequence number and the collection time. The sampling sequence number is used to determine the order of the sampling records in the same batch. The operating cycle identifier is used to determine the operating cycle of the equipment to which each sampling line belongs. When reading line by line, the sampling sequence number is checked first to see if it is consecutive, and then the operating parameters in the same line are checked to see if there are valid readings. If a line is missing the air filter differential pressure, actual air volume, or relative humidity reading, the line is marked as invalid and will not be processed further. The remaining sampling lines are then matched with the operating cycle identifier line by line.

[0054] For example, a fresh air conditioning and humidification integrated equipment in an office area obtains multiple consecutive records within one operating cycle. When all the cycle numbers of each row are the same, they are classified into the same operating cycle. If the cycle number of a row changes, that row is classified into the next operating cycle. If the sampling sequence number of a row skips a number, the skipped position is recorded as a missing sampling position and does not participate in subsequent synchronization processing. After completing the cycle classification verification, a horizontal synchronization check is performed on the data of each row within the same operating cycle. Only when there are valid readings for air filter pressure difference, humidification section pressure loss, fan current, actual air volume, relative humidity at the humidification section outlet, and relative humidity at the air outlet within the same row, is that row considered as a synchronous sampling row. For example, if a sampling row reads air filter pressure difference, humidification section pressure loss, fan current, actual air volume, and two relative humidity readings at the same time, then that row is included in the synchronous sampling set. If the row lacks relative humidity at the air outlet, the entire row is discarded. Finally, the sampling rows with consistent cycle identifiers and all six parameters within the same operating cycle are organized into the cycle synchronous sampling quantity.

[0055] S12: Call the sampling sequences of air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity and air outlet relative humidity in the periodic synchronous sampling quantity, compare the arrangement position of the values ​​in each sampling sequence, remove the maximum and minimum values, and obtain the sampling quantity of the removed sequence.

[0056] Based on the periodic synchronous sampling, the air filter pressure difference sequence, humidification section pressure loss sequence, blower current sequence, actual air volume sequence, humidification section outlet relative humidity sequence, and air outlet relative humidity sequence are extracted separately. Each type of parameter is sorted only within its own sequence and is not mixed with other parameters. During sorting, the original sampling number corresponding to each value is recorded. Then, the maximum and minimum values ​​are identified in each sequence, and the corresponding values ​​are removed from the parameter sequence. For example, if one sampling value in the air filter pressure difference sequence is the maximum value of the entire sequence and another sampling value is the minimum value of the entire sequence, then only these two values ​​are deleted from the air filter pressure difference sequence. Other parameter sequences are still processed independently according to their respective maximum and minimum values. If the minimum or maximum value appears multiple times in a sequence, the one with the earlier original sampling number is selected for removal. If the number of valid samples in a parameter sequence is less than three, the maximum and minimum value removal is not performed, and the original sequence is directly retained. After completing the independent sorting, extreme value identification, and removal of the six types of parameters, the sample quantity of the removed sequence is obtained.

[0057] S13: Based on the sampled values ​​of air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity and air outlet relative humidity, calculate the ratio of the sum of the values ​​to the number of samples, calculate the average of the remaining sampled values, and generate a synchronous benchmark group.

[0058] The remaining sample count for each parameter is calculated based on the sample count of the removed sequence. The remaining sample values ​​within the same parameter are then summed, and the sum is divided by the remaining sample count for that parameter to obtain the average value. For example, after removing extreme values ​​from the air filter pressure difference, four sample values ​​remain. Summing these values ​​and dividing by four yields the average air filter pressure difference. Similarly, the average values ​​for humidification section pressure loss, blower current, actual airflow, humidification section outlet relative humidity, and blower outlet relative humidity are calculated separately based on their respective remaining sample counts. During value normalization, pressure difference data is retained to 0.1 Pa, current to 0.01 A, airflow to 1 m³ / h, and relative humidity to 0.1% RH. If the remaining sample counts for different parameters are inconsistent, the average value is calculated separately for each parameter, without applying the sample count of one parameter to the average value of others. After completing the parameter calculations, including item-by-item accumulation, sample counting, average value calculation, and numerical normalization, the average air filter pressure difference is recorded as the filter pressure difference benchmark value, the average humidification section pressure loss is recorded as the section pressure loss benchmark value, the average blower current is recorded as the blower load benchmark value, the average actual air volume is recorded as the ventilation volume benchmark value, the average relative humidity at the humidification section outlet is recorded as the section outlet humidity benchmark value, and the average relative humidity at the air outlet is recorded as the outlet humidity benchmark value. Simultaneously, the corresponding operating cycle identifier and the sampling sequence number range within that cycle are recorded. The operating cycle identifier and the sampling sequence number range are used together as the cycle timescale. In this embodiment, the synchronous benchmark group values ​​can be 183.5Pa, 48.5Pa, 6.15A, 1187m³ / h, 61.5%RH, and 58.5%RH, and associated with the corresponding cycle timescale, thereby generating the synchronous benchmark group.

[0059] The steps to obtain S2 are as follows:

[0060] S21: Based on the synchronous reference group, detect the humidifier's operating current, water tank level, and power level. Arrange the operating current value, water tank level value, and power level value according to the acquisition time. Group the sampling rows with the same power level value into the same power level sequence. Filter the upper limit value of the operating current, the lower limit value of the operating current, and the water level sensor resolution within the power level sequence to generate the power level operation parameter range.

[0061] Based on the synchronous reference group, the operating current, water tank level, power level, and sampling sequence number are read from the humidifier's sampling record. First, the readings are arranged according to the sampling sequence number. Then, sampling rows with the same power level are grouped into the same power level sequence. During reading, it is checked whether the power level is empty, whether the operating current is within the normal reading range of the equipment, and whether the water tank level is within the readable scale range of the water tank. The normal reading range of the equipment is determined based on the equipment nameplate, debugging record, or sensor range record. Abnormal rows are not included in the power level sequence. A humidifier in a certain office area can operate in both power levels two and three. After reading multiple operating current values ​​within the power level two sequence, the largest reading is recorded as the upper limit of the operating current for that power level, and the smallest reading is recorded as the lower limit of the operating current for that power level. The third power level sequence... The upper and lower limits are obtained in the same way. The resolution of the water level sensor is determined by the full scale of the water tank and the number of scales. When the water level sensor outputs the water level reading from the scale bar of the water tank, the difference in water volume between adjacent scales is used as the resolution of the water level sensor. For example, if the effective capacity of the water tank is 8.0L and the scale bar is divided into 16 adjacent scales, the interval between adjacent scales is 0.5L. This 0.5L is used as the resolution of the water level sensor in this embodiment. If there is only one line of valid sampling record for a certain gear, the working current of that line is used as the upper and lower limits of that gear. If there are multiple lines of sampling record for a certain gear, the maximum and minimum values ​​are compared line by line and the result is the lower limit of the working current, the upper limit of the working current, and the resolution of the water level sensor for each power gear, thus obtaining the gear operation parameter range.

[0062] S22: Call the gear operation parameter range, select the water level value of the previous water tank and the water level value of the next water tank according to the adjacent relationship of the collection time, subtract the water level value of the next water tank from the water level value of the previous water tank, calculate the water level difference between adjacent collection times, and record the positive part of the difference as the drop value to obtain the water level drop.

[0063] The system calls up the operating parameter range and the water tank level readings arranged by sampling sequence number. Adjacent sampling rows are paired consecutively. Adjacent sampling rows refer to two immediately adjacent valid sampling rows in the sequence after invalid rows are removed, ordered by sampling sequence number. If there is a gap between two valid sampling rows, the gap is ignored, and these two valid sampling rows are still considered adjacent. Each pair uses the water level of the previous sampling row as the preceding value and the water level of the next sampling row as the following value. The difference between the preceding and following values ​​is then obtained by subtracting the following value from the preceding value. If the difference is greater than zero, it is recorded as the decrease value; if the difference is equal to zero, the decrease value is recorded as... The value is recorded as zero. When the difference is less than zero, the absolute value is not taken, and the decrease value is also recorded as zero. For example, when the previous water level is 7.8L and the next water level is 7.2L, the water level difference is 0.6L, which is recorded as the decrease value. If the previous water level is lower than the next water level, it means that no water level drop has occurred at the adjacent position, and the decrease value is recorded as 0L. If the power level of two adjacent rows is the same, the decrease value of this group is assigned to the corresponding level. If the power level of two adjacent rows is different, the decrease value of this group is processed according to the current level of the next sampling row. After completing the subtraction of the water levels before and after and recording the positive difference for all adjacent sampling rows, the water level drop is obtained.

[0064] S23: Based on the water level drop, call the upper limit of the working current, the lower limit of the working current, and the water level sensor resolution in the gear operation parameter range, determine that the humidifier working current is between the upper limit of the working current and the lower limit of the working current and the water level drop is greater than the water level sensor resolution, and obtain the steam generation link mark;

[0065] Based on the water level drop, the system retrieves the lower and upper limits of the operating current for the corresponding setting, along with the water level sensor resolution. It then performs a judgment on each adjacent sampling group. When judging the operating current, it reads the humidifier's operating current from the next sampling row. If the current is greater than or equal to the lower limit and less than or equal to the upper limit, a current matching flag is recorded. If the current is lower than the lower limit or higher than the upper limit, no current matching flag is recorded. When judging the water level drop, the drop value is compared with the water level sensor resolution. If the drop is less than or equal to the water level sensor resolution, no water consumption flag is recorded; if it is greater than the water level sensor resolution, a water consumption flag is recorded. For example, if the water level sensor resolution... If the rate is 0.5L, and the drop value of an adjacent sampling group is 0.6L and the working current is within the corresponding current range, then the current matching indicator and water consumption indicator are recorded for that group. If the drop value is equal to 0.5L, the water consumption indicator is not recorded. If the working current exceeds the corresponding current range, even if the water level drop exceeds the resolution of the water level sensor, the current matching indicator is not recorded. When both the current matching indicator and the water consumption indicator are valid, the steam generation valid indicator is recorded. The current matching indicator, water consumption indicator, and steam generation valid indicator together constitute the steam generation link mark. After completing the current range verification and water level drop verification of each adjacent sampling group, the steam generation link mark is obtained.

[0066] The steps to obtain S3 are as follows:

[0067] S31: Call the steam production link marker, collect the relative humidity at the humidification section outlet, pair the steam production link marker in the same sampling row with the relative humidity at the humidification section outlet, determine the sampling row affiliation according to the marker value, retain the valid steam production identifier to establish the humidity value corresponding to the sampling row, and generate the steam production humidity sequence value.

[0068] The process involves calling the steam generation link marker, reading the relative humidity at the humidification section outlet line by line within the same sampling line, and pairing the steam generation link marker with the corresponding humidity reading. Sampling lines with valid steam generation markers are added to the humidity reading list, while those without valid steam generation markers are not. If a sampling line has a valid steam generation marker but the humidity reading is empty, or the humidity reading exceeds the readable range of 0%RH to 100%RH, then that line is not written into the humidity sequence. If a sampling line has a valid steam generation marker and the humidity reading is valid, then the humidity value of that line is recorded in the original sampling order. For example, if multiple sampling lines have valid steam generation markers within a certain operating cycle, the corresponding relative humidity readings at the humidification section outlet are recorded sequentially. The humidity readings of sampling lines without valid markers are only kept in the verification state and are not added to the subsequent sequence. After completing line-by-line pairing, marker value verification, and valid humidity filtering, the steam generation humidity sequence value is generated.

[0069] S32: Based on the steam production humidity sequence value, call the average relative humidity of the humidification section outlet in the synchronous benchmark group, subtract the average humidity of the same item from the humidity value at the same collection time, calculate the humidity difference at each collection time, arrange the difference in the order of the valid steam production identifier to obtain the humidity increment value.

[0070] Based on the steam production humidity sequence value, the average relative humidity of the humidification section outlet in the synchronous benchmark group is retrieved as a reference. The average value is subtracted from each humidity reading in the steam production humidity sequence to obtain the humidity difference value of the corresponding sampling row. For example, if the average relative humidity of the humidification section outlet in the synchronous benchmark group is 61.5%RH, and the outlet humidity of a certain steam production sampling row is 63.5%RH, then the humidity difference value is 2.0%RH. If the outlet humidity of a certain sampling row is lower than the benchmark average value, the difference value is recorded as a negative value and is not converted to a positive number. If the humidity reading is equal to the benchmark average value, the difference value is recorded as 0%RH. The difference values ​​are arranged according to the order in which the valid steam production identifier is established, and are not reordered according to the size of the difference value. If a sampling row lacks a valid steam production identifier or the humidity reading is invalid, then no position is reserved in the difference value sequence for that row. After completing the item-by-item humidity reading, the reference average value is retrieved, the item-by-item subtraction is performed, and the values ​​are arranged according to the order of establishment, the humidity increment value is obtained.

[0071] S33: Based on the humidity increment value, obtain the humidity sensor resolution and humidity sensor indication error, add the two to obtain the humidity discrimination threshold value, compare the humidity increment value with the humidity discrimination threshold value item by item, determine if the humidity increment value is greater than the humidity discrimination threshold value and the effective vapor production mark is established, and obtain the wet fog formation mark.

[0072] Based on the humidity increment value, read the humidity sensor resolution and humidity sensor indication error. The humidity sensor resolution is directly determined according to the resolution parameters marked in the specification sheet, nameplate, or calibration record of the humidity sensor used at the air outlet or humidification section outlet. The indication error is determined according to the allowable deviation in the sensor nameplate or calibration record. For example, if the humidity reading is 0.1%RH and the sensor indication error is ±1.5%RH, then the humidity discrimination threshold is taken as 1.6%RH. When the humidity increment is less than or equal to this threshold, no tolerance limit violation indicator is recorded; when the humidity increment is greater than this threshold, a tolerance limit violation indicator is recorded. If the tolerance limit violation indicator is valid and the corresponding sampling row has a valid steam production indicator, the error is considered cleared. If the condition is met, a humidity transition flag is recorded, and the corresponding wet fog formation state is recorded as a droplet generation flag. In this embodiment, the droplet generation flag is a judgment flag based on the joint validity of steam generation and humidity transition. If the humidity increment of a row is greater than the threshold value but the steam generation validity flag is not met, the droplet generation flag is not recorded for that row. If the steam generation validity flag of a row is met but the humidity increment does not exceed the threshold value, the humidity transition flag and droplet generation flag are not recorded for that row. The humidity transition flag, droplet generation flag, and tolerance limit violation flag together constitute a wet fog formation flag. After completing the item-by-item comparison between the humidity increment and the judgment threshold, and simultaneously checking the steam generation link flag of the corresponding sampling row, the wet fog formation flag is obtained.

[0073] The steps to obtain S4 are as follows:

[0074] S41: Based on the wet fog formation marker, read the marker value according to the collection time, determine whether the fog droplet generation marker is valid, select the sampling row where the fog droplet generation marker is valid, call the air duct volume, actual air volume and humidity sensor response time of the same sampling row, and generate a set of transport parameters.

[0075] Based on the sampling records corresponding to the mist formation markers, the marker values ​​are first divided into two states: established and not established. Each line of the mist formation markers is read and compared with the established state. Only sampling lines with established mist formation markers are entered into the transport parameter reading list; those without established markers are not processed further. Then, for each line in the list, the duct volume, actual airflow, and humidity sensor response time are read. The duct volume is determined by the duct dimensions between the humidification section outlet and the air outlet. The duct volume refers to the total volume of all cavities along the entire airflow path from the humidification section outlet to the air outlet, including the duct, static pressure box, and silencer cavity, but excluding the internal cavities of the humidification section and air filter components. This total volume can be precisely determined from the equipment design drawings. The volume of a rectangular duct can be calculated by multiplying its length, width, and height. The actual air volume is taken from the air volume reading of the same sampling row. The response time of the humidity sensor is taken from the response time on the nameplate or calibration record of the humidity sensor at the air outlet. The duct size, air volume reading range, and humidity sensor response time are all determined according to the equipment nameplate, debugging record, or sensor range record. If the air volume reading of a certain sampling row exceeds the normal operating range of the equipment, or the response time is empty, then that row will not be included in the transmission parameter processing. After completing the status verification, duct volume reading, actual air volume reading, and response time reading, a transmission parameter group is generated. In this embodiment, the duct volume can be taken as 2.59 m³, and the humidity sensor response time can be taken as 8 s.

[0076] S42: Call the transport parameter group, read the duct volume and actual air volume line by line according to the established state acquisition time, divide the duct volume by the actual air volume, calculate the time required for water vapor to complete one volume replacement of the air in the duct from the humidification section to the air outlet, and obtain the duct replacement time.

[0077] The transport parameter group is invoked, and the duct volume and actual air volume are read line by line. The actual air volume is converted from m³ / h to m³ / s, and then the duct volume is divided by the converted air volume to obtain the time required for water vapor to complete one volume replacement in the duct from the humidification section to the air outlet. This time is recorded as the duct replacement time and is used as the duct residence time in the water vapor transport waiting time. For example, if the duct volume is 2.59 m³, the actual air volume is approximately 1180 m³ / h to 1190 m³ / h. At that time, the converted air volume is approximately 0.33 m³ / s, corresponding to a duct replacement time of approximately 7.8 s. Before the calculation, first check whether the duct volume is greater than 0 m³, and then check whether the actual air volume is greater than 0 m³ / h. If either condition is not met, the division operation will not be performed on that row. If the duct consists of multiple segments, first sum the volumes of each segment, and then use the sum as the duct volume of that row for calculation. After completing the row-by-row reading, air volume conversion, volume divided by air volume and value rounding, the duct replacement time is obtained.

[0078] S43: Based on the duct replacement time, call the humidity sensor response time at the same acquisition time in the transport parameter group, add the duct replacement time and humidity sensor response time row by row, calculate the waiting time value row by row, and obtain the water vapor transport waiting time.

[0079] Based on the duct replacement time, the response time of the humidity sensor in the same sampling row is read row by row. The duct replacement time is recorded as the duct dwell time, and the humidity sensor response time is recorded as the sensing lag time. The duct dwell time and the sensing lag time are then added together to obtain the delivery judgment time for that row. The delivery judgment time is used as the value of the water vapor delivery waiting time. For example, if the duct dwell time of a certain row is about 7.8s and the air outlet humidity sensor response time is 8s, then the delivery judgment time is about 15.8s. Before adding row by row, it is checked whether the duct replacement time and response time both have valid values. Rows with response times less than 0s are not included in the addition. If the response time is 0s, it is added as 0s. If the same row has both the humidification section outlet sensor response time and the air outlet sensor response time, then the air outlet humidity sensor response time is taken for addition. After completing the reading of the duct dwell time, the reading of the sensing lag time, the addition operation, and the numerical adjustment in the same sampling row, the water vapor delivery waiting time is obtained.

[0080] The steps to obtain S5 are as follows:

[0081] S51: Based on the waiting time for water vapor delivery, collect the relative humidity at the air outlet, air filter pressure difference, humidification section pressure loss, actual air volume, target air volume, and blower current at the time of collection after the waiting period ends. Obtain the final resistance of the air filter, allowable pressure loss of the humidification section, allowable air volume deviation, and rated current of the blower. Establish peer-to-peer numerical pairing and generate a set of operating parameters after the waiting period.

[0082] Based on the effective sampling rows corresponding to the water vapor delivery waiting time, the relative humidity of the air outlet, air filter differential pressure, humidification section pressure loss, actual air volume, target air volume, and blower current are read at the sampling position after the waiting period ends. At the same time, the final resistance of the air filter, the allowable pressure loss of the humidification section, the allowable deviation of the air volume, and the rated current of the blower are read. The final resistance of the air filter can be determined based on the initial resistance of the filter and the allowable increase during operation. The allowable pressure loss of the humidification section can be determined based on the pressure loss in the clean state and the allowable increase. The allowable deviation of the air volume can be determined according to the set ratio of the target air volume. The rated current of the blower can be determined according to the reading on the blower nameplate. The specific pairing data of each row is shown in Table 1.

[0083] Table 1: Parameter Set for Waiting Conditions

[0084] Sampling line Air outlet relative humidity / %RH Air filter differential pressure / Pa Humidification section pressure loss / Pa Actual air volume (m³ / h) Target air volume (m³ / h) Blower current / A Air filter final resistance / Pa Humidification section allowable pressure loss / Pa Allowable deviation of air volume (m³ / h) Blower rated current / A 03 59.2 230 56 1128 1200 6.7 250 60 120 7.5 05 59.8 258 58 1090 1200 7.1 250 60 120 7.5 06 60.4 262 67 1075 1200 7.6 250 60 120 7.5 07 60.0 240 65 1165 1200 6.9 250 60 120 7.5

[0085] As shown in Table 1, after the waiting period, the humidity, differential pressure, pressure loss, air volume, current and corresponding limit values ​​of the working condition parameter group after the waiting period are written into the same sampling row. The subsequent judgment of insufficient supply air humidity and resistance position are performed row by row according to this table. When pairing row by row, check whether the humidity is between 0%RH and 100%RH, whether the differential pressure and pressure loss are greater than 0Pa, whether the actual air volume and target air volume are greater than 0m³ / h, and whether the supply fan current is greater than 0A. If any item is empty or exceeds the limit, the waiting row will not be included in the subsequent comparison. After the effective value verification and row pairing are completed, the waiting condition parameter group is generated.

[0086] S52: Call the waiting condition parameter group, subtract the average relative humidity of the air outlet from the relative humidity of the air outlet in the synchronization reference group, calculate the relative humidity increment of the air outlet, and sum the humidity sensor resolution and humidity sensor reading error. If the increment does not reach the sum value, the air outlet humidity is marked as not reached.

[0087] The relative humidity readings of the air outlets in the waiting condition parameter group are retrieved, and the average relative humidity of the air outlets in the synchronization reference group is retrieved as a reference. The relative humidity of the air outlets in each sampling row after waiting is subtracted from the average value to obtain the relative humidity increment of the air outlets. For example, if the average relative humidity of the air outlets in the synchronization reference group is 58.5%RH, and the relative humidity of the air outlets in a certain sampling row after waiting is 59.8%RH, then the increment is 1.3%RH. Then, the humidity sensor resolution and the humidity sensor indication error are added to obtain the humidity discrimination threshold value. In this embodiment, the threshold value is 1.6%RH. If the relative humidity increment of the air outlets is less than the threshold value, the air outlet humidity is marked as not reached. If the increment is equal to the threshold value, it is treated as reaching the boundary and no mark is recorded. If the increment is greater than the threshold value, no mark is recorded. After completing the calculation of humidity increments row by row and the comparison of threshold values, the air outlet humidity not reached mark is obtained.

[0088] S53: Based on the air supply humidity not reaching the mark, call the waiting condition parameter group, compare the air filter pressure difference with the final resistance, the humidification section pressure loss with the allowable pressure loss, the actual air volume deviation with the allowable air volume deviation, and the air supply fan current with the rated current, and generate a resistance position mark.

[0089] Based on the waiting sampling rows corresponding to the air supply humidity not reaching the mark, the following comparisons are made: air filter pressure difference and air filter final resistance, humidification section pressure loss and humidification section allowable pressure loss, actual air volume deviation and allowable air volume deviation, and air supply fan current and air supply fan rated current. When the actual air volume is lower than the target air volume, the target air volume is subtracted from the actual air volume to obtain the insufficient air volume difference. When the actual air volume is higher than or equal to the target air volume, the insufficient air volume difference is recorded as 0. When the insufficient air volume difference is greater than the allowable air volume deviation, the insufficient air volume indicator is recorded. If the air filter pressure difference is greater than the air filter final resistance, the filter element resistance is recorded. For each section, if the pressure loss in the humidification section is greater than the allowable pressure loss, a wet section blockage indicator is recorded. If the actual air volume is lower than the target air volume and the air volume deficiency difference is greater than the allowable air volume deviation, an insufficient air volume indicator is recorded. If the blower current is greater than the blower rated current, a blower overload indicator is recorded. If the air volume deficiency difference exceeds the allowable deviation but the blower current does not exceed the rated current, only the insufficient air volume indicator is recorded, and the blower overload indicator is not recorded. The filter blockage indicator, wet section blockage indicator, insufficient air volume indicator, and blower overload indicator together constitute the resistance position marker. The specific judgment results are shown in Table 2.

[0090] Table 2: Resistance Location Marker Judgment Table

[0091] Sampling line Air supply humidity not reached the mark Air filter differential pressure / Pa Filter clogging indicator Humidification section pressure loss / Pa wet section blockage indicator Insufficient airflow difference / (m³ / h) Insufficient airflow indicator Blower current / A Fan overload indicator Resistance position marking 03 1 230 Not established 56 Not established 72 Not established 6.7 Not established none 05 1 258 Established 58 Not established 110 Not established 7.1 Not established Filter clogging indicator 07 1 240 Not established 65 Established 35 Not established 6.9 Not established wet section blockage indicator

[0092] Referring to Table 2, in the sampling rows where the supply air humidity did not reach the set value, all comparisons in sampling row 03 did not exceed the corresponding limits, so the resistance position mark was empty. In sampling row 05, the air filter pressure difference was greater than the final air filter resistance, so the filter blockage mark was recorded. In sampling row 07, the humidification section pressure loss was greater than the allowable pressure loss of the humidification section, so the wet section blockage mark was recorded. After completing the item-by-item judgment of filter blockage mark, wet section blockage mark, insufficient air volume mark, and fan overload mark, the resistance position mark was generated.

[0093] The steps to obtain S6 are as follows:

[0094] S61: For the resistance position mark, call up the humidifier power level, humidification section outlet relative humidity, relative humidity set value and relative humidity set value allowable deviation, match the resistance position mark with the four values ​​according to the collection time, add the relative humidity set value and allowable deviation to obtain the upper limit of humidity allowable value.

[0095] For the resistance position marker, the humidifier power level, humidification section outlet relative humidity, relative humidity setpoint, and relative humidity setpoint allowable deviation of the corresponding sampling row are read line by line. The resistance position status and the above four values ​​are written into the same row. When the resistance position status is true, the subsequent downshift trigger judgment is initiated. When the status is false, only the verification status is retained. The relative humidity setpoint comes from the current humidification control target of the equipment. The relative humidity setpoint allowable deviation comes from the equipment control panel or operating parameter table. For example, if the relative humidity setpoint is 62.0%RH and the allowable deviation is 2.0%RH, then the upper limit of humidity is 64.0%RH. If the setpoint or allowable deviation of a certain row is empty, or the value exceeds the settable range of the equipment, then the upper limit of humidity is not generated for that row. After completing the setpoint reading, allowable deviation reading, and addition of the same row, the upper limit of humidity is obtained.

[0096] S62: Based on the upper limit of humidity allowable value, call the resistance position marker and the relative humidity of the humidification section outlet at the same collection time, compare the relative humidity of the humidification section outlet with the upper limit of humidity allowable value, determine if the outlet humidity exceeds the upper limit and the resistance position marker is in the established state, and obtain the downshift trigger marker.

[0097] Based on the upper limit of humidity allowable, the resistance position marker and the relative humidity at the humidification section outlet are read line by line in the same sampling row. The resistance position marker is set to active status when any of the following indicators is active: filter blockage, wet section blockage, insufficient airflow, or fan overload. If none of the four indicators are active, the resistance position marker is set to inactive status. The relative humidity at the humidification section outlet is compared with the upper limit of humidity allowable. Values ​​below or equal to the upper limit are not considered exceeding the limit; values ​​above the upper limit are considered exceeding the limit. Only when the outlet humidity exceeds the upper limit of humidity allowable and the resistance position marker is active is a downgrade trigger marker recorded. A valid position marker means that any one of the following markers is valid: filter blockage, wet section blockage, insufficient airflow, or fan overload. If none of the four markers are valid, the resistance position marker is set to the invalid state. For example, if the upper limit of humidity is 64.0%RH, and the relative humidity at the outlet of a humidification section in a certain sampling row is 65.1%RH, and the resistance position marker is valid, then the row will be marked with a downgrade trigger marker. If the outlet humidity is equal to the upper limit, or the resistance position marker is invalid, then the downgrade trigger marker will not be recorded. After completing the reading of the upper limit, the reading of the outlet humidity, the reading of the resistance position status, and the judgment of the magnitude relationship, the downgrade trigger marker is obtained.

[0098] S63: Based on the downshift trigger flag, call the humidifier power level at the same collection time. When it is determined that the downshift trigger flag is in the established state, downshift the current level by one level according to the level sequence, record the level before adjustment and the level after adjustment, and establish a control level command.

[0099] The downshift trigger flag reads the current power level of the humidifier in the same sampling row line by line, and selects the adjacent lower level according to the preset level order. The level order can be set to level 1, level 2, level 3, level 4, and level 5. When the current level is between level 2 and level 5, downshifting by one level selects the level before the current level. When the current level is level 1, no further downshifting is required. If the downshift trigger flag is not established, the current level is maintained. If the downshift trigger flag is established and the current level is valid, the level before adjustment and the level after adjustment are recorded. The level after adjustment is used as the downshift target, and the level difference between the level before adjustment and the level after adjustment is used as the adjustment range. The sampling row, downshift trigger flag, level before adjustment, and level after adjustment together constitute the level change record. The downshift target, adjustment range, and level change record together constitute the control level command. The downshift trigger and control level verification results are shown in Table 3.

[0100] Table 3: Downshift Trigger and Control Gear Checklist

[0101] Sampling line Resistance position marking Humidification section outlet relative humidity / %RH Maximum allowable humidity / %RH Downshift trigger flag Adjust the power setting Adjusted power level Downshift target Adjustment range / level Gear shift record 03 none 63.5 64.0 0 Second gear Second gear none 0 No reduction 05 Filter clogging indicator 64.0 64.0 0 Three gears Three gears none 0 No reduction 07 wet section blockage indicator 65.1 64.0 1 Three gears Second gear Second gear 1 The third gear was downgraded to the second gear.

[0102] Table 3 shows the downshift triggering and control gear verification results in the embodiment. Sampling line 03 did not form a resistance position mark, so the current gear is maintained. Although sampling line 05 has a filter blockage mark, the relative humidity at the humidification section outlet is not higher than the upper limit of humidity, so downshifting is not triggered. Sampling line 07 has a wet section blockage mark, and the relative humidity at the humidification section outlet is higher than the upper limit of humidity, so the downshift trigger mark is established. The downshift target is gear 2, the adjustment range is 1 gear, and the gear change record is downshifting from gear 3 to gear 2. Sampling lines with a downshift trigger mark of 0 are only used as gear verification records and are not used as downshift control gear command outputs. Sampling lines with a downshift trigger mark of 1 generate control gear commands. If the current gear is empty or does not belong to the preset gear sequence, no gear change record is generated. After completing the trigger status verification, current gear reading, adjacent low gear selection, and gear records before and after adjustment, the control gear command is established.

[0103] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A control method for a fresh air conditioning and humidification integrated device, characterized in that, Includes the following steps: S1: Collect the air filter pressure difference, humidification section pressure loss, fan current, actual air volume, relative humidity at the humidification section outlet and the air outlet, and the collection time in the integrated fresh air conditioning and humidification equipment. Filter synchronous sampling data within the same operating cycle to generate a synchronous benchmark group. The synchronous benchmark group includes the filter pressure difference benchmark value, the section pressure loss benchmark value, the fan load benchmark value, the ventilation volume benchmark value, the section outlet humidity benchmark value, the outlet air humidity benchmark value, and the cycle time scale. S2: Based on the synchronous reference group, detect the humidifier's operating current, water tank level, and power setting, obtain the operating current range of the power setting and the resolution of the water level sensor, calculate the water level drop, determine that the humidifier's operating current is between the upper and lower limits of the operating current and that the water level drop is greater than the resolution of the water level sensor, and obtain the steam generation link marker, which specifically includes a current matching marker, a water consumption marker, and a valid steam generation marker. S3: Call the steam generation link marker, collect the relative humidity at the outlet of the humidification section, calculate the increase in the relative humidity at the outlet, obtain the humidity increment value, then obtain the humidity sensor resolution and humidity sensor indication error, add the two to obtain the humidity discrimination threshold value, determine that the humidity increment value is greater than the humidity discrimination threshold value and the steam generation valid marker is established for the sampling line, obtain the wet fog formation marker, the wet fog formation marker includes humidity transition marker, fog droplet generation marker, and tolerance limit exceedance marker; S4: Based on the wet fog formation marker, obtain the duct volume, actual air volume and humidity sensor response time. Divide the duct volume by the actual air volume to calculate the time required for water vapor to complete one volume replacement from the humidification section to the air outlet in the duct, and obtain the duct replacement time. Add the duct replacement time to the humidity sensor response time row by row to obtain the water vapor delivery waiting time. The water vapor delivery waiting time specifically refers to the duct dwell time, the sensor lag time and the delivery determination time. S5: Based on the water vapor delivery waiting time, collect the relative humidity at the air outlet, air filter differential pressure, humidification section pressure loss, actual air volume, target air volume, and blower current; obtain the final resistance of the air filter, allowable pressure loss of the humidification section, allowable air volume deviation, and blower rated current; compare the air filter differential pressure with the final resistance, the humidification section pressure loss with the allowable pressure loss, the actual air volume deviation with the allowable air volume deviation, and the blower current with the rated current; generate resistance position markers, including filter blockage markers, humidification section blockage markers, insufficient air volume markers, and blower overload markers. S6: For the resistance position mark, call the humidifier power level, humidification section outlet relative humidity, relative humidity set value and relative humidity set value allowable deviation, determine that the humidification section outlet humidity exceeds the upper limit and the resistance position mark is in the established state, obtain the downshift trigger mark, and when the downshift trigger mark is in the established state, downshift the current humidifier power level by one level according to the level sequence, and establish a control level instruction. The control level instruction specifically includes the downshift target, adjustment range, and level change record.

2. The control method for the integrated fresh air conditioning and humidification device according to claim 1, characterized in that, In step S1, the process of determining the synchronization reference group includes the following steps: S11: Collect the air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity, air outlet relative humidity and collection time in the integrated fresh air conditioning humidification equipment. Match the collection time with the equipment operation cycle mark line by line, filter the synchronous sampling data within the same operation cycle, and generate the cycle synchronous sampling quantity. S12: Call the sampling sequences of air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity and air outlet relative humidity in the periodic synchronous sampling quantity, compare the arrangement position of the values ​​in each sampling sequence, remove the maximum and minimum values, and obtain the sampling quantity of the removed sequence. S13: Based on the sampled values ​​of the air filter pressure difference, humidification section pressure loss, blower current, actual air volume, humidification section outlet relative humidity, and air outlet relative humidity, calculate the ratio of the sum of the values ​​to the number of samples, calculate the average of the remaining sampled values, and generate a synchronous benchmark group.

3. The control method for the integrated fresh air conditioning and humidification device according to claim 1, characterized in that, In step S2, the process of determining the water level drop includes the following steps; S21: Based on the aforementioned synchronous reference group, detect the humidifier's operating current, water tank level, and power level. Arrange the operating current value, water tank level value, and power level value according to the acquisition time. Group the sampling rows with the same power level value into the same power level sequence. Filter the upper limit value of the operating current, the lower limit value of the operating current, and the water level sensor resolution within the power level sequence to generate the power level operation parameter range. S22: Call the gear operation parameter range, select the water level value of the previous water tank and the water level value of the next water tank according to the adjacent relationship of the collection time, subtract the water level value of the next water tank from the water level value of the previous water tank, calculate the water level difference of the water tanks at adjacent collection times, and record the positive part of the difference as the drop value to obtain the water level drop.

4. The control method for the integrated fresh air conditioning and humidification device according to claim 1, characterized in that, In step S3, the process of determining the humidity increment value includes the following steps: S31: Call the steam production link marker, collect the relative humidity at the humidification section outlet, pair the steam production link marker in the same sampling row with the relative humidity at the humidification section outlet, determine the sampling row affiliation according to the marker value, retain the valid steam production identifier to establish the humidity value corresponding to the sampling row, and generate the steam production humidity sequence value. S32: Based on the steam production humidity sequence value, call the average relative humidity of the humidification section outlet in the synchronous reference group, subtract the average humidity of the same item from the humidity value at the same collection time, calculate the humidity difference at each collection time, arrange the difference in the order of the valid steam production identifier, and obtain the humidity increment value.

5. The control method for the integrated fresh air conditioning and humidification device according to claim 1, characterized in that, In step S4, the process of determining the duct replacement time includes the following steps: S41: Based on the wet fog formation marker, read the marker value according to the collection time, determine whether the fog droplet generation identifier is valid, select the sampling row where the fog droplet generation identifier is valid, call the air duct volume, actual air volume and humidity sensor response time of the same sampling row, and generate a set of transport parameters. S42: Call the transport parameter group, read the duct volume and actual air volume line by line according to the established state acquisition time, divide the duct volume by the actual air volume, calculate the time required for water vapor to complete one volume replacement in the duct from the humidification section to the air outlet, and obtain the duct replacement time.

6. The control method for the integrated fresh air conditioning and humidification device according to claim 1, characterized in that, In step S5, the process of determining the resistance location marker includes the following steps: S51: Based on the water vapor delivery waiting time, collect the relative humidity of the air outlet, air filter pressure difference, humidification section pressure loss, actual air volume, target air volume, and blower current at the time of waiting end, obtain the final resistance of the air filter, allowable pressure loss of the humidification section, allowable air volume deviation, and blower rated current, establish peer value pairing, and generate a set of operating condition parameters after waiting. S52: Call the waiting condition parameter group, subtract the average relative humidity of the air outlet from the relative humidity of the air outlet in the synchronization reference group, calculate the relative humidity increment of the air outlet, and sum the resolution of the humidity sensor and the error of the humidity sensor reading. If the increment does not reach the sum value, the air outlet humidity is marked as not reached. S53: Based on the air supply humidity not reaching the mark, call the waiting condition parameter group, compare the air filter pressure difference with the final resistance, the humidification section pressure loss with the allowable pressure loss, the actual air volume deviation with the allowable air volume deviation, and the air supply fan current with the rated current, and generate a resistance position mark.

7. The control method for the integrated fresh air conditioning and humidification device according to claim 1, characterized in that, In step S6, the process of determining the downshift trigger flag includes the following steps: S61: For the resistance position mark, call the humidifier power level, humidification section outlet relative humidity, relative humidity set value and relative humidity set value allowable deviation, match the resistance position mark with the four values ​​according to the collection time, add the relative humidity set value and allowable deviation to obtain the upper limit of humidity allowable value. S62: Based on the upper limit of humidity, call the resistance position marker and the relative humidity of the humidification section outlet at the same collection time, compare the relative humidity of the humidification section outlet with the upper limit of humidity, determine that the outlet humidity exceeds the upper limit and the resistance position marker is in a valid state, and obtain the downshift trigger marker.

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