Internal and external circulation control method, electronic equipment, computer storage medium and vehicle

Abstract

The invention discloses an internal and external circulation control method, electronic equipment, a computer storage medium and a vehicle, and the internal and external circulation control method comprises the step of performing open-loop control on an internal and external circulation air door of an air conditioner in an internal and external circulation mode of the air conditioner. By adopting the internal and external circulation control method, the problems of fogging and frosting of the car window can be solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to an internal and external circulation control method, electronic equipment, computer storage medium, and vehicle. Background Technology

[0002] To prevent fogging and frost formation on vehicle windows while driving, related technologies primarily utilize automatic anti-fog sensors installed above the windshield. These sensors collect data on glass temperature, relative humidity, and air temperature, and calculate the fogging risk level based on the difference between the dew point temperature and the glass temperature to control the internal and external air circulation ratio. However, because anti-fog sensors are typically located at the edge, where air convection is poor, this leads to sensor response lag and fluctuations. Consequently, due to the delayed response, the internal and external air circulation ratio cannot be adjusted until the fogging risk level changes, resulting in a slower response speed for controlling the internal and external air circulation ratio. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to propose an internal and external circulation control method that can solve the problem of glass fogging and frosting through open-loop control.

[0004] The second objective of this invention is to provide an electronic device.

[0005] The third objective of this invention is to provide a computer storage medium.

[0006] The fourth objective of this invention is to provide a computer program product.

[0007] The fifth objective of this invention is to provide a vehicle.

[0008] To address the aforementioned problems, a first aspect of the present invention provides an internal and external circulation control method, comprising: performing open-loop control on the internal and external circulation dampers of the air conditioner in the internal and external circulation mode of the air conditioner.

[0009] According to the internal and external circulation control method of the present invention, in the internal and external circulation mode of the air conditioner, the ratio between internal and external circulation is reasonably adjusted by performing open-loop control on the internal and external circulation dampers of the air conditioner, thereby changing the temperature difference between the outside air and the inside air of the vehicle, and thus effectively improving the air environment inside the vehicle and solving the problem of fogging and frosting of the glass. Compared with the closed-loop control based on the anti-fog sensor, the response speed is faster.

[0010] In some embodiments, open-loop control of the internal and external circulation dampers of the air conditioner includes: feedforward open-loop control of the internal and external circulation dampers.

[0011] In some embodiments, feedforward open-loop control of the internal and external circulation dampers includes: performing feedforward open-loop control of the internal and external circulation dampers based on external environmental parameters and vehicle operating condition information that affects window fogging.

[0012] According to the internal and external circulation control method of the present invention, in order to avoid the problem of windshield fogging and frost formation when the vehicle is in motion, this application no longer relies on the feedback of the anti-fog sensor to adjust the internal and external circulation dampers. Instead, it introduces feedforward open-loop control to reasonably control the internal and external circulation ratio before the windshield fogs up, thereby reducing the risk of windshield fogging in advance. Moreover, this process does not require the participation of the anti-fog sensor, reducing the delay problem caused by the lag in the response of the anti-fog sensor and improving the response speed of the internal and external circulation ratio control.

[0013] In some embodiments, feedforward open-loop control of the internal and external circulation dampers is performed based on external environmental parameters and vehicle operating condition information affecting window fogging, including: determining the internal and external circulation feedforward ratio value based on the external environmental parameters and vehicle operating condition information affecting window fogging; and controlling the internal and external circulation dampers based on the internal and external circulation feedforward ratio value.

[0014] According to the internal and external circulation control method of the present invention, the feedforward ratio value of internal and external circulation is obtained by using external environmental parameters and vehicle operating condition information that affects window fogging. The internal and external circulation dampers are then controlled using this feedforward ratio value. To avoid the problem of window fogging and frost during vehicle operation, this application no longer relies solely on feedback from the anti-fog sensor to adjust the internal and external circulation ratio. Instead, it introduces feedforward open-loop control to calculate the feedforward ratio value of internal and external circulation. This allows for reasonable control of internal and external circulation before window fogging occurs, reducing the risk of window fogging in advance. Moreover, this process does not require the participation of the anti-fog sensor, reducing the delay problem caused by the lag in the response of the anti-fog sensor and improving the response speed of the internal and external circulation ratio control.

[0015] In some embodiments, the vehicle operating condition information includes air conditioning air outlet mode, fan speed, and vehicle speed. Determining the internal and external circulation feedforward ratio value based on the external environmental parameters and the vehicle operating condition information includes: determining a base ratio value based on the air conditioning air outlet mode and fan speed; determining a feedforward compensation value based on the external environmental parameters and vehicle speed; and determining the internal and external circulation feedforward ratio value based on the feedforward compensation value and the base ratio value.

[0016] In some embodiments, determining a basic ratio value based on the air conditioner's air outlet mode and the air volume level includes: obtaining a preset error compensation coefficient; determining a mode ratio coefficient based on the air conditioner's air outlet mode; determining an air volume ratio coefficient based on the air volume level; and determining the basic ratio value based on the preset error compensation coefficient, the mode ratio coefficient, and the air volume ratio coefficient.

[0017] In some embodiments, the air conditioning air outlet modes include full defrost mode, foot defrost mode, face defrost mode, and foot defrost mode, wherein the mode ratio coefficient corresponding to the full defrost mode is less than the mode ratio coefficient corresponding to the foot defrost mode, less than the mode ratio coefficient corresponding to the face defrost mode, and less than the mode ratio coefficient corresponding to the foot defrost mode.

[0018] In some embodiments, the airflow level is inversely proportional to the airflow ratio coefficient.

[0019] In some embodiments, the external environmental parameters include solar radiation intensity and external ambient temperature. Determining a feedforward compensation value based on the external environmental parameters and the vehicle speed includes: determining a first compensation value based on the external ambient temperature and the solar radiation intensity, wherein the solar radiation intensity is inversely proportional to the first compensation value; determining a second compensation value based on the external ambient temperature and the vehicle speed, wherein the vehicle speed is directly proportional to the second compensation value; and determining the feedforward compensation value based on the first compensation value and / or the second compensation value.

[0020] In some embodiments, after performing feedforward open-loop control on the internal and external circulation dampers, the method further includes: determining an internal and external circulation adjustment ratio value based on the relative humidity inside the vehicle fed back by the anti-fog sensor; and adjusting the internal and external circulation feedforward ratio value based on the internal and external circulation adjustment ratio value.

[0021] In some embodiments, determining the internal and external circulation adjustment ratio based on the relative humidity inside the vehicle includes: if the relative humidity inside the vehicle is greater than or equal to the upper limit of a preset humidity range, then determining the internal and external circulation adjustment ratio as a first adjustment ratio value; if the relative humidity inside the vehicle is less than the lower limit of a preset humidity range, then determining the internal and external circulation adjustment ratio as a second adjustment ratio value.

[0022] In some embodiments, adjusting the feedforward ratio of the internal and external circulation based on the internal and external circulation adjustment ratio includes: increasing the feedforward ratio of the internal and external circulation by the first adjustment ratio when the relative humidity inside the vehicle is greater than or equal to the upper limit of a preset humidity range; or decreasing the feedforward ratio of the internal and external circulation by the second adjustment ratio when the relative humidity inside the vehicle is less than the lower limit of a preset humidity range; and stopping further adjustment of the feedforward ratio of the internal and external circulation until the relative humidity inside the vehicle meets the stop adjustment condition.

[0023] In some embodiments, when the relative humidity inside the vehicle is greater than or equal to the upper limit of a preset humidity range, the stop adjustment condition is that the relative humidity inside the vehicle in the current detection cycle is less than the relative humidity inside the vehicle in the previous detection cycle; when the relative humidity inside the vehicle is less than the lower limit of a preset humidity range, the stop adjustment condition is that the relative humidity inside the vehicle in the current detection cycle is greater than or equal to the relative humidity inside the vehicle in the previous detection cycle.

[0024] In some embodiments, the method further includes: determining the preset humidity range based on the airflow setting.

[0025] A second aspect of the present invention provides an electronic device, comprising: at least one processor; and a memory communicatively connected to at least one of the processors; wherein the memory stores a computer program executable by at least one of the processors, and the at least one processor executes the computer program to implement the internal and external loop control method described in the above embodiments.

[0026] According to the electronic device of the present invention, when the processor executes the computer program, it implements the internal and external circulation control method described in the above embodiments. It can reasonably control the internal and external circulation before the car window fogs up, reduce the risk of car window fogging in advance, and improve the response speed of the internal and external circulation ratio control.

[0027] A third aspect of the present invention provides a computer storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the internal and external loop control method described in the above embodiments.

[0028] A fourth aspect of the present invention provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the inner and outer loop control method described in the above embodiments.

[0029] A fifth aspect of the present invention provides a vehicle, including: an in-vehicle air conditioner, the in-vehicle air conditioner including an internal and external circulation damper; and a controller connected to the internal and external circulation damper for executing the internal and external circulation control method described in the above embodiments.

[0030] According to the vehicle of the present invention, by adopting the internal and external circulation control method of the above embodiment, the internal and external circulation can be reasonably controlled before the windows fog up, thereby reducing the risk of window fogging in advance and improving the response speed of the internal and external circulation ratio control.

[0031] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 This is a flowchart of an internal and external loop control method according to an embodiment of the present invention;

[0034] Figure 2 This is a flowchart of an internal and external circulation control method according to an embodiment of the present invention;

[0035] Figure 3 This is a structural block diagram of an electronic device according to an embodiment of the present invention;

[0036] Figure 4 This is a structural block diagram of a vehicle according to an embodiment of the present invention.

[0037] Figure label:

[0038] 100 vehicles;

[0039] Electronic equipment 10; internal and external circulation damper 20; controller 30;

[0040] Processor 1; Memory 2. Detailed Implementation

[0041] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0042] To address the aforementioned problems, a first aspect of the present invention provides an internal and external circulation control method that can solve the problem of fogging and frosting on glass.

[0043] The following is for reference. Figure 1 The present invention describes an internal and external circulation control method, which includes at least step S1: in the internal and external circulation mode of an air conditioner, performing open-loop control on the internal and external circulation dampers of the air conditioner.

[0044] In this embodiment, to solve the problem of fogging and frosting on the glass, the air conditioner's internal and external circulation ratio can be controlled based on information collected by an automatic anti-fog sensor. This method based on the automatic anti-fog sensor can be called closed-loop control.

[0045] However, the open-loop control in this application can be relative to closed-loop control. For example, open-loop control may not be limited to information collected by the automatic anti-fog sensor, but may be based on information other than that collected by the automatic anti-fog sensor, such as external environmental information and / or other relevant vehicle condition information.

[0046] Specifically, in the air conditioning's internal and external circulation modes, the ratio of internal to external circulation can be changed by adjusting the internal and external circulation dampers. Based on this, to prevent the problem of fogging and frost on the windows caused by excessive humidity inside the vehicle, this application uses open-loop control of the air conditioning's internal and external circulation dampers. For example, it can use feedforward open-loop control or feedback open-loop control to change the opening of the internal and external circulation dampers. This allows for reasonable adjustment of the ratio between internal and external circulation based on different conditions inside and outside the vehicle, thereby changing the temperature difference between the outside and inside air and effectively improving the air environment inside the vehicle, thus preventing the problem of fogging and frost on the windows.

[0047] In some embodiments, open-loop control can reduce or avoid fogging or frost formation on the glass, either after or before closed-loop control based on information collected by an automatic anti-fog sensor, or solely through open-loop control.

[0048] According to the internal and external circulation control method of the present invention, in the internal and external circulation mode of the air conditioner, the ratio between internal and external circulation is reasonably adjusted by performing open-loop control on the internal and external circulation dampers of the air conditioner, thereby changing the temperature difference between the outside air and the inside air of the vehicle, and thus effectively improving the air environment inside the vehicle and solving the problem of fogging and frosting of the glass. Compared with the closed-loop control based on the anti-fog sensor, the response speed is faster.

[0049] In some embodiments, to prevent fogging and frost formation on the windshield while the vehicle is in motion, related technologies utilize an automatic anti-fog sensor installed above the windshield. This sensor collects data on glass temperature, relative humidity, and air temperature, and calculates the fogging risk level based on the difference between the dew point temperature and the glass temperature to control the internal and external air circulation ratio. However, since the anti-fog sensor is typically located at the edge, where air convection is poor, it leads to response lag and fluctuations. Consequently, due to the delayed response, the internal and external air circulation ratio cannot be adjusted until the fogging risk level changes, resulting in a slower response speed for controlling the internal and external air circulation ratio. To address these issues, this application employs feedforward open-loop control for the internal and external air circulation dampers in the air conditioning's internal and external air circulation modes. In other words, by introducing feedforward open-loop control, the internal and external air circulation ratio is rationally controlled before the anti-fog sensor detects fogging on the windshield, thereby reducing the risk of windshield fogging and resolving the problem of glass fogging and frost formation.

[0050] The following describes feedforward open-loop control of the internal and external circulation dampers, which includes at least the following steps:

[0051] Step S2: Determine the external environmental parameters and vehicle operating information that affects window fogging.

[0052] Among them, the external environmental parameters can include external temperature, solar radiation intensity or external humidity, which can be obtained by sensors; the vehicle operating information that affects window fogging can include internal temperature, internal humidity, vehicle air conditioning mode, fan speed and other information.

[0053] Step S3: Perform feedforward open-loop control on the internal and external circulation dampers based on external environmental parameters and vehicle operating condition information.

[0054] Specifically, to avoid the problem of windshield fogging and frost formation while the vehicle is in motion, this application no longer relies solely on feedback from the anti-fog sensor to adjust the internal and external air circulation dampers. Instead, it introduces feedforward open-loop control to change the internal and external air circulation dampers, thereby reasonably controlling the ratio of internal and external circulation before the windows fog up, thus reducing the risk of window fogging in advance. Moreover, this process does not require the participation of the anti-fog sensor, reducing the delay problem caused by the lag in the response of the anti-fog sensor and improving the response speed of the internal and external circulation ratio control.

[0055] According to the internal and external circulation control method of the present invention, in order to avoid the problem of windshield fogging and frost formation when the vehicle is in motion, this application no longer relies on the feedback of the anti-fog sensor to adjust the internal and external circulation dampers. Instead, it introduces feedforward open-loop control to reasonably control the internal and external circulation ratio before the windshield fogs up, thereby reducing the risk of windshield fogging in advance. Moreover, this process does not require the participation of the anti-fog sensor, reducing the delay problem caused by the lag in the response of the anti-fog sensor and improving the response speed of the internal and external circulation ratio control.

[0056] In some embodiments, feedforward open-loop control of the internal and external circulation dampers includes at least steps S3-S4.

[0057] Step S3: Obtain the feedforward ratio of internal and external circulation based on external environmental parameters and vehicle operating condition information that affects window fogging.

[0058] Specifically, since fogging occurs very quickly, related technologies cannot predict the trend and risk of fogging and can only rely on the detection values ​​fed back by the anti-fog sensor for control. However, due to factors such as the placement of the anti-fog sensor, there is a significant lag between the detected value and the actual value in the field of view. To solve this problem, this application no longer relies solely on the feedback from the anti-fog sensor to adjust the internal and external circulation ratio. Instead, it introduces feedforward open-loop control to calculate the feedforward ratio value of the internal and external circulation. That is, the feedforward ratio value of the internal and external circulation is obtained in advance by using external environmental parameters and vehicle operating condition information. Based on this feedforward ratio value, the opening of the internal and external circulation dampers is directly adjusted to the vicinity of the required opening. In this way, the internal and external circulation is reasonably controlled before the windows fog up, reducing the risk of window fogging in advance. Moreover, this process does not require the participation of the anti-fog sensor, reducing the delay problem caused by the response lag of the anti-fog sensor and improving the response speed of the internal and external circulation ratio control.

[0059] Step S4: Control the internal and external circulation dampers according to the internal and external circulation feedforward ratio values.

[0060] Specifically, by controlling the internal and external circulation dampers through the feedforward ratio of the internal and external circulation, the risk of fogging can be predicted, and the internal and external circulation dampers can be adjusted in advance to respond promptly to changes in the risk of fogging and prevent fogging and frost formation.

[0061] According to the internal and external circulation control method of the present invention, the feedforward ratio value of internal and external circulation is obtained by using external environmental parameters and vehicle operating condition information that affects window fogging. The internal and external circulation dampers are then controlled using this feedforward ratio value. To avoid the problem of window fogging and frost during vehicle operation, this application no longer relies solely on feedback from the anti-fog sensor to adjust the internal and external circulation ratio. Instead, it introduces feedforward open-loop control to calculate the feedforward ratio value of internal and external circulation. This allows for reasonable control of internal and external circulation before window fogging occurs, reducing the risk of window fogging in advance. Moreover, this process does not require the participation of the anti-fog sensor, reducing the delay problem caused by the lag in the response of the anti-fog sensor and improving the response speed of the internal and external circulation ratio control.

[0062] In some embodiments, vehicle operating condition information includes air conditioning air outlet mode, fan speed, and vehicle speed. The internal and external circulation feedforward ratio values ​​are determined based on external environmental parameters and vehicle operating condition information, including determining a base ratio value based on air conditioning air outlet mode and fan speed; determining a feedforward compensation value based on external environmental parameters and vehicle speed; and determining the internal and external circulation feedforward ratio values ​​based on the feedforward compensation value and the base ratio value.

[0063] Specifically, considering that different air conditioning modes at the same fan speed can contribute to window fogging, and that a higher fan speed under the same air conditioning mode results in a greater fresh air flow and less fogging, and that under certain outside temperature conditions, lower vehicle speed increases convection on the glass surface due to lower outside temperatures, leading to increased heat exchange, lower glass surface temperature, and increased risk of fogging, this application determines the feedforward ratio of internal and external air circulation based on operating conditions such as air conditioning mode, fan speed, and vehicle speed, combined with external environmental parameters. Specifically, a base ratio is obtained based on the vehicle's air conditioning settings. The system determines the base ratio value for the current state based on different combinations of air conditioning modes and fan speeds. It also determines the feedforward compensation value for the current state based on changes in external environmental parameters and vehicle speed. Based on the base ratio value, the feedforward compensation value is adjusted in real time to obtain the feedforward ratio value for internal and external circulation. This feedforward ratio value is then used to control the internal and external circulation dampers, thereby enabling reasonable control of internal and external circulation before the windows fog up, reducing the risk of window fogging. Moreover, this process does not require the participation of anti-fog sensors, reducing the delay caused by the lag in the response of anti-fog sensors and improving the response speed of internal and external circulation ratio control.

[0064] The formula (1-1) can be used to determine the feedforward ratio of the inner and outer circulation based on the feedforward compensation value and the basic ratio value.

[0065] The formula for the feedforward ratio of the inner and outer circulation is: Formula (1-1) = Basic ratio + Feedforward compensation value.

[0066] In some embodiments, determining a basic ratio value based on the air conditioner's air outlet mode and air volume level includes: obtaining a preset error compensation coefficient; determining a mode ratio coefficient based on the air conditioner's air outlet mode; determining an air volume ratio coefficient based on the air volume level; and determining a basic ratio value based on the preset error compensation coefficient, mode ratio coefficient, and air volume ratio coefficient.

[0067] The preset error compensation coefficient is a pre-set value used to correct errors during the calibration process.

[0068] Specifically, considering that different air conditioning modes have different weights in influencing window fogging under the same airflow level (i.e., the same air volume), and that a larger airflow and greater fresh air volume under the same airflow mode reduces fogging, this application pre-sets corresponding mode ratio coefficients for different air conditioning modes to indicate the degree of influence of the airflow mode on window fogging. Simultaneously, it pre-sets corresponding airflow ratio coefficients for different airflow levels. Therefore, when obtaining the basic ratio value, the mode ratio coefficient and the airflow ratio coefficient can be determined based on the vehicle's current air conditioning mode and airflow level. Thus, by combining the vehicle's current air conditioning mode and airflow level, and using preset error compensation coefficients, mode ratio coefficients, and airflow ratio coefficients, the basic ratio value required for reasonable control of internal and external air circulation under the current conditions can be obtained, thereby reducing the risk of window fogging in advance.

[0069] The basic ratio value is obtained based on the preset error compensation coefficient A, the mode ratio coefficient Sm, and the air volume ratio coefficient Sf, which can be referred to in formula (1-2).

[0070] Basic ratio value = Sm * Sf * 100% + A (Formula 1-2)

[0071] In some embodiments, the air conditioning outlet modes include full defrost mode, foot defrost mode, face mode, and foot mode, where the mode ratio coefficient corresponding to full defrost mode is less than the mode ratio coefficient corresponding to foot defrost mode, less than the mode ratio coefficient corresponding to face mode, and less than the mode ratio coefficient corresponding to foot mode.

[0072] Specifically, under the same airflow level, different air conditioning modes have different weights in affecting window fogging. Different air conditioning modes have a corresponding mode ratio coefficient to indicate their degree of influence on window fogging. The larger the mode ratio coefficient, the more likely the current air conditioning mode is to cause window fogging.

[0073] In some embodiments, the airflow level is inversely proportional to the airflow ratio coefficient, that is, the airflow ratio coefficient Sf decreases as the airflow level increases.

[0074] Specifically, under the same air conditioning mode, changes in airflow affect the degree to which the air conditioning mode causes window fogging. Vehicles have multiple airflow levels, each with a pre-defined proportional coefficient. As the airflow level increases, the airflow increases, resulting in a larger fresh air volume and a lower risk of window fogging. Therefore, the proportional coefficient can be set to decrease as the airflow level increases. For example, the airflow levels can be divided into level one, level two, level three, and level four. As the airflow level increases, the airflow also increases. Based on these airflow levels, the proportional coefficient for level one can be set to 1, level two to 0.8, level three to 0.6, and level four to 0.4, without any restrictions.

[0075] In some embodiments, the external environmental parameters include solar radiation intensity and external ambient temperature. Determining a feedforward compensation value based on the external environmental parameters and vehicle speed includes determining a first compensation value based on the external ambient temperature and solar radiation intensity, wherein the solar radiation intensity is inversely proportional to the first compensation value, i.e., the first compensation value tends to decrease as the solar radiation intensity increases; determining a second compensation value based on the external ambient temperature and vehicle speed, wherein the vehicle speed is directly proportional to the second compensation value, i.e., the second compensation value increases as the vehicle speed increases; and determining a feedforward compensation value based on the first compensation value and / or the second compensation value.

[0076] Specifically, under certain external temperature conditions, when the external ambient temperature is low, increased vehicle speed leads to increased convection on the glass surface, resulting in increased heat exchange and a decrease in glass surface temperature. This increases the risk of window fogging. Furthermore, under certain external temperature conditions, fogging reduces glass transmittance and increases its absorption coefficient. Therefore, as solar radiation intensity increases, glass temperature rises, accelerating moisture evaporation. Based on these factors, this application calculates a feedforward compensation value by considering factors such as external ambient temperature, solar radiation intensity, and vehicle speed. Specifically, calibration tests can be performed beforehand for different external ambient temperatures and solar radiation intensities to create a table or graph showing the relationship between external ambient temperature, solar radiation intensity, and the first compensation value. Calibration tests are conducted at different ambient temperatures and vehicle speeds to establish a correspondence table or graph between ambient temperature, vehicle speed, and the second compensation value. Based on this, during actual control, the first and second compensation values ​​can be determined by consulting the corresponding table / graph based on the detected ambient temperature, solar radiation intensity, and vehicle speed. Then, the feedforward compensation value is determined using the first and / or second compensation values, and the base ratio value is compensated using the feedforward compensation value. This allows for reasonable control of the internal and external circulation ratio in advance, reducing the risk of window fogging, and also allows for the pre-adjustment of the internal and external circulation dampers to the vicinity of the required opening, avoiding the problem of low control accuracy caused by reserving a large opening margin under different fogging levels to ensure no fogging. This improves the control accuracy of internal and external circulation.

[0077] Specifically, determining the feedforward compensation value using the first compensation value and / or the second compensation value includes: either the first compensation value or the second compensation value can be used as the feedforward compensation value, or the feedforward compensation value can be jointly determined based on the first compensation value and the second compensation value, without any restriction.

[0078] The feedforward compensation value can be determined based on the first compensation value and the second compensation value, as shown in formula (1-3).

[0079] Feedforward compensation value = (First compensation value + Second compensation value) * 100% (Formula 1-3)

[0080] In some embodiments, after performing feedforward open-loop control on the internal and external circulation dampers, the method further includes: determining an internal and external circulation adjustment ratio value based on the relative humidity inside the vehicle fed back by the anti-fog sensor; and adjusting the feedforward ratio value of the internal and external circulation based on the adjustment ratio value. That is, after controlling the internal and external circulation dampers to reach the target opening based on the feedforward ratio value, this application can further adjust the feedforward ratio value of the internal and external circulation based on changes in the relative humidity inside the vehicle. This allows for further adjustment of the opening of the internal and external circulation dampers based on changes in the relative humidity inside the vehicle, thereby further reducing the risk of fogging and preventing fogging and frost problems caused by excessive humidity inside the vehicle.

[0081] Specifically, the relative humidity inside the vehicle can be obtained by setting an anti-fog sensor. As the relative humidity inside the vehicle increases, the risk of window fogging increases. Therefore, after controlling the internal and external circulation dampers to reach the target opening based on the feedforward ratio value of the internal and external circulation, this application will obtain the internal and external circulation adjustment ratio value according to the relative humidity inside the vehicle, and adjust the feedforward ratio value of the internal and external circulation based on the adjustment ratio value of the internal and external circulation. That is, based on the target opening, the opening of the internal and external circulation dampers will be further adjusted according to the changes in the relative humidity inside the vehicle. Specifically, if the relative humidity inside the vehicle increases, in order to avoid fogging, the proportion of external circulation can be appropriately increased or fully opened to introduce more fresh air from outside to improve the humidity inside the vehicle and reduce the risk of window fogging. If the relative humidity inside the vehicle decreases, the proportion of internal circulation can be appropriately decreased or closed to improve the humidity inside the vehicle and reduce the risk of window fogging.

[0082] In some embodiments, obtaining the internal and external circulation adjustment ratio value based on the relative humidity inside the vehicle includes: if the relative humidity inside the vehicle is greater than or equal to the upper limit of a preset humidity range, then determining the internal and external circulation adjustment ratio value as a first adjustment ratio value; if the relative humidity inside the vehicle is less than the lower limit of a preset humidity range, then determining the internal and external circulation adjustment ratio value as a second adjustment ratio value.

[0083] The preset humidity range is a pre-calibrated range of relative humidity inside the vehicle that is unlikely to cause fogging of the windows. The first and second adjustment ratios can also be pre-calibrated according to actual conditions. For example, the first adjustment ratio can be 5% and the second adjustment ratio can be 3%, without any restrictions.

[0084] In some embodiments, adjusting the feedforward ratio of internal and external circulation based on the internal and external circulation adjustment ratio includes: increasing the feedforward ratio of internal and external circulation by a first adjustment ratio when the relative humidity inside the vehicle is greater than or equal to the upper limit of a preset humidity range; or decreasing the feedforward ratio of internal and external circulation by a second adjustment ratio when the relative humidity inside the vehicle is less than the lower limit of a preset humidity range; and stopping further adjustment of the feedforward ratio of internal and external circulation until the relative humidity inside the vehicle meets the stop adjustment condition.

[0085] Specifically, when the relative humidity inside the vehicle is greater than or equal to the upper limit of the preset humidity range, the feedforward ratio of the internal and external air circulation is increased by a first adjustment ratio to appropriately increase the proportion of external air circulation. Conversely, when the relative humidity inside the vehicle is less than the lower limit of the preset humidity range, the feedforward ratio of the internal and external air circulation is decreased by a second adjustment ratio to appropriately decrease the proportion of internal air circulation. Based on this control, the internal and external air circulation ratio can be reasonably adjusted under different humidity conditions, thereby improving the humidity inside the vehicle and reducing the risk of window fogging. Simultaneously, during internal and external air circulation control, a detection cycle for the relative humidity inside the vehicle is set. After each detection cycle, the sensor re-detects the relative humidity inside the vehicle. If the relative humidity inside the vehicle is not within the preset humidity range, the feedforward ratio of the internal and external air circulation will continue to be adjusted until the relative humidity meets the stop adjustment condition, at which point further adjustment of the feedforward ratio of the internal and external air circulation will cease. The sensor detection cycle can be set according to actual conditions and is not specifically limited here; for example, a detection cycle of 8s, 9s, or 10s can be set.

[0086] For example, a first adjustment ratio of 5% and a second adjustment ratio of 3% can be set. If, in the first detection cycle, it is determined that the relative humidity inside the vehicle is greater than or equal to the upper limit of the preset humidity range, the first adjustment ratio is increased based on the feedforward ratio S of the internal and external circulation, i.e., the internal and external circulation dampers are controlled at (S+5%). If, in the second detection cycle, it is still determined that the relative humidity inside the vehicle is greater than or equal to the upper limit of the preset humidity range, the first adjustment ratio is increased again based on (S+5%), i.e., the internal and external circulation dampers are controlled at (S+5%+5%). And so on. If, in the Nth detection cycle, it is determined that the relative humidity inside the vehicle meets the stop adjustment condition, then compensation is stopped, and the internal and external circulation dampers are controlled at a ratio of S+(N-1)*5%. Similarly, if in the first detection cycle it is determined that the relative humidity inside the vehicle is less than the lower limit of the preset humidity range, then the second adjustment ratio is reduced based on the feedforward ratio S of the internal and external circulation, that is, the internal and external circulation dampers are controlled by (S-3%). If in the second detection cycle it is still determined that the relative humidity inside the vehicle is less than the lower limit of the preset humidity range, then the second adjustment ratio is reduced again based on (S-3%), that is, the internal and external circulation dampers are controlled by (S-3%-3%). And so on. If in the Nth detection cycle it is determined that the relative humidity inside the vehicle meets the conditions for stopping adjustment, then compensation is stopped, and the internal and external circulation dampers are controlled by the ratio S-(N-1)*5%.

[0087] In some embodiments, when the relative humidity inside the vehicle is greater than or equal to the upper limit of the preset humidity range, the adjustment is stopped when the relative humidity inside the vehicle in the current detection cycle is less than the relative humidity inside the vehicle in the previous detection cycle; when the relative humidity inside the vehicle is less than the lower limit of the preset humidity range, the adjustment is stopped when the relative humidity inside the vehicle in the current detection cycle is greater than or equal to the relative humidity inside the vehicle in the previous detection cycle.

[0088] Specifically, when the relative humidity inside the vehicle is greater than or equal to the upper limit of the preset humidity range, if the relative humidity inside the vehicle in the current detection period is lower than that in the previous detection period, it indicates that the relative humidity inside the vehicle has decreased. Therefore, to prevent the relative humidity inside the vehicle from exceeding the preset humidity range, the adjustment of the internal and external circulation dampers will be stopped under this condition. When the relative humidity inside the vehicle is less than the lower limit of the preset humidity range, if the relative humidity inside the vehicle in the current detection period is greater than or equal to that in the previous detection period, it indicates that the relative humidity inside the vehicle has increased. Therefore, to prevent the relative humidity inside the vehicle from exceeding the preset humidity range, the adjustment of the internal and external circulation dampers will be stopped under this condition.

[0089] In some embodiments, the method of this application further includes determining a preset humidity range based on the airflow level.

[0090] Specifically, since airflow directly affects the convection intensity at the anti-fog sensor, it can cause a deviation between the sensor's collected and actual values. Therefore, when adjusting the feedforward ratio of the internal and external air circulation based on the relative humidity inside the vehicle, this application can determine a preset humidity range suitable for the current conditions based on the airflow level. Specifically, different preset humidity ranges can be pre-set for different airflow levels. For example, airflow level one corresponds to a first preset humidity range, airflow level two corresponds to a second preset humidity range, airflow level three corresponds to a third preset humidity range, and airflow level four corresponds to a fourth preset humidity range. Different preset humidity ranges correspond to different internal and external circulation adjustment ratios. Therefore, before obtaining the internal and external circulation adjustment ratios based on the vehicle's relative humidity, the current preset humidity range can be determined based on the fan speed setting. This set range is then used to determine the vehicle's relative humidity, thus determining the internal and external circulation adjustment ratios. For example, if the current fan speed setting is level two, the second preset humidity range is used to determine the vehicle's relative humidity—whether it is within the second preset humidity range, greater than or equal to the upper limit, or less than the lower limit. By combining the influence of fan speed on humidity to determine the internal and external circulation adjustment ratios, and then adjusting the feedforward ratios of the internal and external circulation based on these ratios, the control accuracy of the internal and external circulation can be further improved.

[0091] It should be noted that multiple preset humidity ranges can be partially the same or completely different, without restriction. For example, considering that the impact of the airflow generated by setting one on the convection intensity at the anti-fog sensor is relatively small compared to the impact of the airflow generated by setting two, the first preset humidity range and the second preset humidity range can be set to be the same. However, the impact of the airflow generated by setting one on the convection intensity at the anti-fog sensor is significantly different compared to the impact of the airflow generated by setting four, therefore the first preset humidity range and the fourth preset humidity range can be set to be different.

[0092] The following is for reference. Figure 2 The internal and external circulation control method of this invention will be illustrated by example, and the specific steps are as follows.

[0093] Step S4, Begin.

[0094] Step S5: Input parameter collection, which may include external ambient temperature, air conditioning mode, fan speed, relative humidity inside the vehicle, solar radiation intensity, and vehicle speed.

[0095] Step S6: Determine the first compensation value based on the ambient temperature outside the vehicle and the intensity of solar radiation.

[0096] Step S7: Determine the second compensation value based on the ambient temperature outside the vehicle and the vehicle speed.

[0097] Step S8: Determine the basic ratio value based on the air conditioner's air outlet mode and air volume level.

[0098] Step S9: Determine the feedforward compensation value based on the first compensation value and the second compensation value.

[0099] Step S10: Obtain the internal and external circulation adjustment ratio based on the relative humidity inside the vehicle.

[0100] Step S11: Determine the inner and outer loop feedforward ratios based on the base ratio and the feedforward compensation value.

[0101] Step S12: Adjust the feedforward ratio of the inner and outer circulations according to the adjustment ratio of the inner and outer circulations.

[0102] Step S13: Control the internal and external circulation dampers according to the internal and external circulation feedforward ratio values.

[0103] In some embodiments, the method of this application can be used in ordinary air conditioners and all air conditioning units with internal and external circulation control functions, such as dual-layer air conditioners, without limitation.

[0104] A second aspect of the present invention provides an electronic device 10, such as... Figure 3 As shown, it includes at least one processor 10; and a memory 2 communicatively connected to at least one processor 10.

[0105] The memory 2 stores a computer program that can be executed by at least one processor 1. When the at least one processor 1 executes the computer program, it implements the inner and outer loop control method of the above embodiment.

[0106] According to the embodiment of the present invention, the electronic device 10 implements the internal and external circulation control method of the above embodiment when the processor 1 executes the computer program. It can reasonably control the internal and external circulation before the car window fogs up, reduce the risk of car window fogging in advance, and improve the response speed of the internal and external circulation ratio control.

[0107] A third aspect of the present invention provides a computer storage medium on which a computer program is stored, wherein the computer program, when executed by a processor, implements the internal and external loop control method of the above embodiments.

[0108] A fourth aspect of the present invention provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the inner and outer loop control method described in the above embodiments.

[0109] A fifth aspect of the present invention provides a vehicle 100, such as Figure 4As shown, it includes: a vehicle air conditioner, an internal / external circulation damper 20, and a controller 30. The controller 30 is connected to the internal / external circulation damper 20 and is used to execute the internal / external circulation control method described in the above embodiment.

[0110] According to the vehicle 100 of the present invention, by employing the internal and external circulation control method of the above embodiments, the internal and external circulation can be reasonably controlled before the windows fog up, thereby reducing the risk of window fogging in advance and improving the response speed of the internal and external circulation ratio control. In the description of this specification, any process or method described in the flowcharts or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing customized logical functions or processes, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0111] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0112] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any of the following techniques known in the art, or a combination thereof: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0113] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium. When executed, the program includes one or a combination of the steps of the method embodiments.

[0114] Furthermore, the functional units in the various embodiments of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0115] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0116] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0117] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An inner-outer circulation control method characterized by, Comprise: In the internal and external circulation mode of the air conditioner, the internal and external circulation air door of the air conditioner is controlled in open loop.

2. The inner-outer loop control method according to claim 1, wherein The internal and external circulation air door of the air conditioner is controlled in open loop: comprising: The internal and external circulation air door is controlled in feedforward open loop.

3. The inner-outer loop control method according to claim 2, wherein The internal and external circulation air door is controlled in feedforward open loop, comprising: According to the vehicle operating condition information affecting the vehicle window fogging and the vehicle external environment parameter, the internal and external circulation air door is controlled in feedforward open loop.

4. The inner-outer loop control method according to claim 3, wherein According to the vehicle operating condition information affecting the vehicle window fogging and the vehicle external environment parameter, the internal and external circulation air door is controlled in feedforward open loop, comprising: According to the vehicle external environment parameter and the vehicle operating condition information affecting the vehicle window fogging, the internal and external circulation feedforward proportional value is determined; According to the internal and external circulation feedforward proportional value, the internal and external circulation air door is controlled.

5. The inner-outer loop control method according to claim 4, wherein The vehicle operating condition information comprises the air conditioner air outlet mode, the air volume gear and the vehicle speed, according to the vehicle external environment parameter and the vehicle operating condition information, the internal and external circulation feedforward proportional value is determined, comprising: According to the air conditioner air outlet mode and the air volume gear, the basic proportional value is determined; According to the vehicle external environment parameter and the vehicle speed, the feedforward compensation value is determined; According to the feedforward compensation value and the basic proportional value, the internal and external circulation feedforward proportional value is determined.

6. The inner-outer loop control method according to claim 5, wherein According to the air conditioner air outlet mode and the air volume gear, the basic proportional value is determined, comprising: The preset error compensation coefficient is obtained; According to the air conditioner air outlet mode, the mode proportional coefficient is determined; According to the air volume gear, the air volume proportional coefficient is determined; According to the preset error compensation coefficient, the mode proportional coefficient and the air volume proportional coefficient, the basic proportional value is determined.

7. The inner-outer loop control method according to claim 6, wherein The air conditioner air outlet mode comprises the full defrosting mode, the foot blowing defrosting mode, the face blowing mode and the foot blowing mode, the mode proportional coefficient corresponding to the full defrosting mode < the mode proportional coefficient corresponding to the foot blowing defrosting mode < the mode proportional coefficient corresponding to the face blowing mode < the mode proportional coefficient corresponding to the foot blowing mode.

8. The inner-outer loop control method according to claim 6, wherein The air volume gear is inversely proportional to the air volume proportional coefficient.

9. The inner-outer loop control method according to claim 5, wherein The vehicle external environment parameter comprises the sunlight radiation intensity and the vehicle external environment temperature, according to the vehicle external environment parameter and the vehicle speed, the feedforward compensation value is determined, comprising: According to the vehicle external environment temperature and the sunlight radiation intensity, the first compensation value is determined, the sunlight radiation intensity is inversely proportional to the first compensation value; According to the vehicle external environment temperature and the vehicle speed, the second compensation value is determined, the vehicle speed is proportional to the second compensation value; According to the first compensation value and / or the second compensation value, the feedforward compensation value is determined.

10. The internal and external circulation control method according to any one of claims 2 to 9, characterized by, After the internal and external circulation air door is controlled in feedforward open loop, the method further comprises: According to the vehicle internal relative humidity fed back by the anti-fog sensor, the internal and external circulation adjustment proportional value is determined; According to the internal and external circulation adjustment proportional value, the internal and external circulation feedforward proportional value is adjusted.

11. The inner-outer loop control method according to claim 10, wherein According to the vehicle internal relative humidity, the internal and external circulation adjustment proportional value is determined, comprising: If the vehicle internal relative humidity is greater than or equal to the upper limit value of the preset humidity range, the internal and external circulation adjustment proportional value is determined as the first adjustment proportional value; If the vehicle internal relative humidity is less than the lower limit value of the preset humidity range, the internal and external circulation adjustment proportional value is determined as the second adjustment proportional value.

12. The inner-outer loop control method according to claim 11, wherein According to the internal and external circulation adjustment proportional value, the internal and external circulation feedforward proportional value is adjusted, comprising: in the case that the relative humidity in the vehicle is greater than or equal to an upper limit value of the preset humidity range, increasing the inside-outside circulation feedforward proportion value by the first adjustment proportion value; or, in the case that the relative humidity in the vehicle is less than a lower limit value of the preset humidity range, decreasing the inside-outside circulation feedforward proportion value by the second adjustment proportion value; stopping the continuous adjustment of the inside-outside circulation feedforward proportion value until the relative humidity in the vehicle satisfies a stop adjustment condition.

13. The inner-outer loop control method according to claim 12, wherein in the case that the relative humidity in the vehicle is greater than or equal to an upper limit value of the preset humidity range, the stop adjustment condition is that the relative humidity in the current detection period is less than the relative humidity in the last detection period; in the case that the relative humidity in the vehicle is less than a lower limit value of the preset humidity range, the stop adjustment condition is that the relative humidity in the current detection period is greater than or equal to the relative humidity in the last detection period.

14. The method according to any one of claims 11 to 13, wherein The method further comprises: determining the preset humidity range according to the air volume gear.

15. An electronic device, comprising: comprise: at least one processor; a memory connected in communication with the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the at least one processor implements the inside-outside circulation control method of any one of claims 1-14 when executing the computer program.

16. A computer storage medium having stored thereon a computer program, characterized in that The computer program is executed by the processor to implement the inside-outside circulation control method of any one of claims 1-14.

17. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the inside-outside circulation control method of any one of claims 1-14.

18. A vehicle characterized by comprising: comprise: a vehicle-mounted air conditioner, comprising an inside-outside circulation air door; a controller connected with the inside-outside circulation air door, configured to execute the inside-outside circulation control method of any one of claims 1-14.

Images