Automobile air conditioner mode damper control method, device, equipment and storage medium

Abstract

The application relates to the technical field of automobile air conditioners, and discloses a mode air door control method, device and equipment of an automobile air conditioner and a storage medium, the method comprising the following steps: detecting whether the air outlet mode of an automobile air conditioner box comprises a face blowing mode; if the face blowing mode is not included, determining the air blower duty cycle of the automobile air conditioner box according to the air volume gear type of the air outlet mode; performing position processing on the air blower duty cycle to obtain mode air door motor steps; and controlling the opening degree of the mode air door of the automobile air conditioner box based on the mode air door motor steps. According to the application, when the air outlet mode does not comprise the face blowing mode, the air blower duty cycle of the automobile air conditioner box is determined according to the air volume gear type, the opening degree of the mode air door is controlled by determining the mode air door motor steps, the cost increase caused by the fact that a large amount of calibration resources needs to be invested in the open-loop control of the traditional automobile air conditioner temperature is avoided, and the closed-loop control of the automobile air conditioner temperature through the opening degree of the mode air door under any air outlet mode is ensured.

Description

Technical Field

[0001] This invention relates to the field of automotive air conditioning technology, and in particular to a method, device, equipment, and storage medium for controlling the mode damper of an automotive air conditioning system. Background Technology

[0002] The automotive air conditioning ventilation system refers to the system that directs cold / hot air from the air conditioning system through the air conditioning ducts to the corresponding air conditioning outlets, thereby lowering or raising the temperature inside the car and ensuring the normal cooling or heating performance of the automotive air conditioning ventilation system.

[0003] Traditional air conditioning systems mostly use open-loop temperature control, requiring significant investment in calibration resources to ensure accurate temperature control and avoid thermal runaway, which greatly increases the cost of automotive air conditioning systems.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a method, device, equipment, and storage medium for controlling the air damper of an automotive air conditioning system. This invention aims to solve the technical problem that traditional air conditioning systems mostly use open-loop control for temperature control, requiring a large amount of calibration resources to ensure the accuracy of temperature control and avoid thermal runaway.

[0006] To achieve the above objectives, the present invention provides a method for controlling the airflow mode of an automotive air conditioning system, the method comprising the following steps:

[0007] Check if the airflow modes of the car's air conditioning unit include a face-blowing mode;

[0008] If the air outlet mode does not include the face blowing mode, then the air volume level type of the air outlet mode is detected, and the blower duty cycle of the car air conditioning unit is determined according to the air volume level type.

[0009] The duty cycle of the blower is processed to obtain the number of steps of the mode damper motor;

[0010] The opening degree of the mode damper of the vehicle air conditioning unit is controlled based on the number of steps of the mode damper motor.

[0011] Optionally, the step of performing position processing on the duty cycle of the blower to obtain the mode damper motor step count includes:

[0012] The position of the mode damper of the car air conditioning unit is obtained by converting the duty cycle of the blower through a preset damper opening calibration table. The preset damper opening calibration table includes the mapping relationship between the blower duty cycle and the mode damper opening.

[0013] The position of the mode damper is numerically converted to obtain the number of motor steps for the mode damper.

[0014] Optionally, the step of calculating the position of the mode damper of the automotive air conditioning unit by using a preset damper opening calibration table to convert the duty cycle of the blower includes:

[0015] Determine whether the duty cycle of the blower is within the preset duty cycle range;

[0016] If the blower duty cycle is not within the preset duty cycle range, the blower duty cycle is converted according to the preset damper opening calibration table to obtain the mode damper position of the automotive air conditioning unit.

[0017] If the blower duty cycle is within the preset duty cycle range, then the blower duty cycle is linearly interpolated according to the preset mode damper opening algorithm to obtain the mode damper position of the automotive air conditioning unit.

[0018] Optionally, controlling the opening degree of the mode damper of the vehicle's air conditioning unit based on the number of steps of the mode damper motor includes:

[0019] Based on the motor steps of the damper in the aforementioned mode, a motor step count instruction is generated;

[0020] The motor step count command is sent to the vehicle air conditioning unit so that the vehicle air conditioning unit controls the opening of the mode damper according to the motor step count command.

[0021] Optionally, if the air outlet mode does not include a face-blowing mode, then detecting the airflow level type of the air outlet mode and determining the blower duty cycle of the automotive air conditioning unit based on the airflow level type includes:

[0022] If the air outlet mode does not include the face blowing mode, then the airflow level type of the air outlet mode is detected, and the airflow level type includes manual level and automatic level;

[0023] When the airflow setting type is manual, the blower duty cycle of the automotive air conditioning unit is found through the manual blower parameter table;

[0024] When the airflow setting is set to automatic, the blower duty cycle of the automotive air conditioning unit is determined based on the current outlet air temperature of the mode damper.

[0025] Optionally, when the airflow mode is set to automatic, determining the blower duty cycle of the automotive air conditioning unit based on the current outlet air temperature of the mode damper includes:

[0026] When the airflow mode is set to automatic, the current air outlet temperature is obtained through the air duct temperature sensor of the mode damper. The air duct temperature sensor is located at the front air outlet or foot air outlet of the car air conditioning unit.

[0027] Obtain the airflow and vehicle interior temperature corresponding to the mode damper;

[0028] Based on the current air outlet temperature, the vehicle interior temperature, and the airflow in the duct, the blower duty cycle of the vehicle air conditioning unit is determined.

[0029] Optionally, after detecting whether the air outlet mode of the car air conditioning unit includes a face-blowing mode, the method further includes:

[0030] If the air outlet mode includes a face blowing mode, then the air outlet mode is determined to be a user-defined mode, and the user-defined mode includes the air volume and the position of the set damper.

[0031] Based on the air volume and the set damper position, the mode damper of the car air conditioning unit is controlled.

[0032] Furthermore, to achieve the above objectives, the present invention also proposes an automotive air conditioning mode damper control device, the device comprising:

[0033] The mode detection module is used to detect whether the air outlet mode of the car's air conditioning unit includes a face blowing mode;

[0034] The duty cycle determination module is used to detect the air volume level type of the air outlet mode if the air outlet mode does not include the face blowing mode, and determine the blower duty cycle of the car air conditioning unit according to the air volume level type.

[0035] The motor step module is used to perform position processing on the duty cycle of the blower to obtain the motor step count of the mode damper.

[0036] The damper control module is used to control the opening degree of the mode damper of the vehicle air conditioning unit based on the number of steps of the mode damper motor.

[0037] Furthermore, to achieve the above objectives, the present invention also proposes an automotive air conditioning mode damper control device, the device comprising: a memory, a processor, and an automotive air conditioning mode damper control program stored in the memory and executable on the processor, the automotive air conditioning mode damper control program being configured to implement the steps of the automotive air conditioning mode damper control method described above.

[0038] In addition, to achieve the above objectives, the present invention also proposes a storage medium storing an automotive air conditioning mode damper control program, wherein when the automotive air conditioning mode damper control program is executed by a processor, it implements the steps of the automotive air conditioning mode damper control method described above.

[0039] This invention first detects whether the air outlet mode of the automotive air conditioning unit includes a face-blowing mode. If the air outlet mode does not include a face-blowing mode, it detects the airflow rate type of the air outlet mode and determines the blower duty cycle of the automotive air conditioning unit based on the airflow rate type. Then, it performs position processing on the blower duty cycle to obtain the mode damper motor steps. Finally, based on the mode damper motor steps, it controls the opening degree of the mode damper of the automotive air conditioning unit. Because this invention determines the blower duty cycle of the automotive air conditioning unit based on the airflow rate type when the air outlet mode of the automotive air conditioning unit does not include a face-blowing mode, and thus determines the mode damper motor steps to control the opening degree of the mode damper, it avoids the increased cost of traditional automotive air conditioning temperature control due to the large amount of calibration resources required for open-loop control. This ensures closed-loop control of the automotive air conditioning temperature is achieved through the opening degree of the mode damper in any air outlet mode. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of the automotive air conditioning mode damper control device in the hardware operating environment involved in the embodiments of the present invention;

[0041] Figure 2 This is a flowchart illustrating the first embodiment of the automotive air conditioning mode damper control method of the present invention;

[0042] Figure 3 This is a schematic diagram of a scenario in the first embodiment of the automotive air conditioning mode damper control method of the present invention, in which the air conditioning face and foot vents share a single temperature sensor.

[0043] Figure 4 This is an interactive schematic diagram illustrating adaptive control of the mode damper in the first embodiment of the automotive air conditioning mode damper control method of the present invention.

[0044] Figure 5 This is a flowchart illustrating the second embodiment of the automotive air conditioning mode damper control method of the present invention;

[0045] Figure 6 This is a schematic diagram illustrating the determination of the mode damper position in the second embodiment of the automotive air conditioning mode damper control method of the present invention;

[0046] Figure 7 This is a schematic flowchart of the second embodiment of the automotive air conditioning mode damper control method of the present invention;

[0047] Figure 8 This is a structural block diagram of the first embodiment of the automotive air conditioning mode damper control device of the present invention.

[0048] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0050] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the automotive air conditioning mode damper control device in the hardware operating environment involved in the embodiments of the present invention.

[0051] like Figure 1 As shown, the automotive air conditioning mode damper control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk storage device. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0052] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the automotive air conditioning mode damper control device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0053] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and an automotive air conditioning mode damper control program.

[0054] exist Figure 1In the illustrated automotive air conditioning mode damper control device, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and memory 1005 in the automotive air conditioning mode damper control device of the present invention can be set in the automotive air conditioning mode damper control device, and the automotive air conditioning mode damper control device calls the automotive air conditioning mode damper control program stored in the memory 1005 through the processor 1001 and executes the automotive air conditioning mode damper control method provided in the embodiment of the present invention.

[0055] This invention provides a method for controlling the airflow mode of an automotive air conditioning system, referring to... Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of the automotive air conditioning mode damper control method of the present invention.

[0056] Traditional air conditioning systems mostly use open-loop temperature control, requiring significant calibration resources to ensure accuracy and prevent thermal runaway. However, with the continuous development of automotive air conditioning from mechanization to electrification and intelligence, to improve temperature control accuracy, a duct temperature sensor is typically placed near the front and rear air vents of each temperature zone in the air conditioning unit (e.g., fixed locations for front / rear / defrosting / front / rear / rear / defrosting, etc.) to achieve closed-loop temperature control. However, this method significantly increases the number of duct temperature sensors, greatly increasing the cost of the automotive air conditioning system.

[0057] To solve the above problems, refer to Figure 3 , Figure 3 This is a schematic diagram illustrating a scenario where the air vents for both the face and feet share a single temperature sensor, as described in the first embodiment of the automotive air conditioning mode damper control method of the present invention. This embodiment proposes an automotive air conditioning mode damper control method that utilizes the mode damper of the air conditioning system to provide a certain airflow direction to the location of the duct temperature sensor regardless of the air conditioning mode, ensuring that the duct temperature sensor collects accurate air conditioning outlet temperature information. Therefore, by controlling the opening of the mode damper, closed-loop temperature control of the air conditioning system is ensured in any air outlet mode, even when the face and feet air vents share a single temperature sensor.

[0058] In this embodiment, the automotive air conditioning mode damper control method includes the following steps:

[0059] Step S10: Check whether the air outlet mode of the car air conditioning unit includes a face blowing mode.

[0060] It should be noted that the execution subject of the method in this embodiment can be a computing service device with mode detection, data processing, and damper control functions, such as an air conditioning controller or an on-board computer. It can also be other electronic devices capable of performing the same or similar functions, such as the aforementioned automotive air conditioning mode damper control device. This embodiment does not limit this. Here, the aforementioned automotive air conditioning mode damper control device (hereinafter referred to as the control device) will be used to specifically describe this embodiment and the following embodiments.

[0061] Understandably, the air outlet mode is the way the air cooled or heated by the air conditioning system is sent out of the car's air conditioning unit through the set air outlets, such as blowing air to the face, blowing air to the feet, defrosting, blowing air to the face and feet, blowing air to the feet and defrosting, blowing air to the face and defrosting, blowing air to the face and feet and defrosting, etc.

[0062] It should be understood that "face blowing mode" is an airflow mode in a car's air conditioning system that directs hot or cold air from the central vents on the dashboard towards the driver's and passenger's faces. When face blowing mode is used, it indicates that the driver or passenger urgently needs rapid cooling or heating. In this mode, the airflow pattern of the car's air conditioning system is under user control and operates according to the user-defined mode. Therefore, whether face blowing mode is included in the airflow patterns can be used to determine if the air damper control is in the user-defined mode.

[0063] In practice, the control device can first detect whether the air outlet mode of the car's air conditioning unit includes a face-blowing mode, and then determine whether the damper control is in the user-set mode by whether the air outlet mode includes a face-blowing mode.

[0064] Step S20: If the air outlet mode does not include the face blowing mode, then detect the air volume level type of the air outlet mode, and determine the blower duty cycle of the car air conditioning unit according to the air volume level type.

[0065] It should be noted that the fan speed setting is a setting option in the car's air conditioning system used to adjust the amount of air supplied, such as automatic and manual settings.

[0066] Understandably, the blower duty cycle is the operating frequency of the blower in a car's air conditioning unit. In a car's air conditioning system, the blower controls the airflow and temperature by changing its operating frequency. Generally, when increased airflow is needed, the blower's operating frequency or duty cycle is increased; conversely, when decreased airflow is needed, the blower's operating frequency or duty cycle is decreased. By controlling the blower's duty cycle, precise temperature regulation and airflow control can be achieved, improving driving and passenger comfort.

[0067] Different airflow settings can achieve different levels of fine airflow control. Therefore, the blower duty cycle can be quickly determined by first identifying the airflow setting type.

[0068] In practical implementation, if the air outlet mode does not include a face-blowing mode, it indicates that the driver or front passenger is not in a state of urgent need for rapid cooling or heating. In this case, the air outlet mode of the car's air conditioning system may be a random mode. Therefore, the airflow level of the air outlet mode can be detected. Since different airflow level types can achieve different levels of fine airflow control, the blower duty cycle can be quickly determined by first identifying the airflow level type.

[0069] Step S30: Perform position processing on the duty cycle of the blower to obtain the mode damper motor step count.

[0070] It's important to note that the mode damper motor step count is the number of steps the motor in the automotive air conditioning system uses to control the mode damper. By controlling the step count, the mode damper motor adjusts its position, thereby controlling the direction and position of the airflow from the air conditioning system. Adjusting the mode damper motor step count allows for more precise and flexible airflow direction, providing better air conditioning performance and comfort.

[0071] Step S40: Based on the number of steps of the mode damper motor, control the opening degree of the mode damper of the vehicle air conditioning unit.

[0072] It should be noted that the mode damper is a component in an automotive air conditioning system used to control the opening and closing state and direction of the air vents. By adjusting the degree of opening and closing of the mode damper, the direction of airflow from the air conditioning system can be changed, thereby achieving smooth air circulation and comfortable airflow inside the vehicle.

[0073] In practical implementation, the control device can further process the blower duty cycle to obtain the corresponding mode damper motor steps. Finally, based on the mode damper motor steps, the opening degree of the mode damper in the automotive air conditioning unit is controlled, changing the direction of airflow from the air conditioning system. Thus, by adjusting the mode damper motor steps, the airflow direction of the air conditioning system becomes more precise and flexible, providing better air conditioning performance and comfort.

[0074] Furthermore, in this embodiment, after step S10, the method further includes: if the air outlet mode includes a face blowing mode, then the air outlet mode is determined to be a user-defined mode, the user-defined mode includes air volume and a set damper position; based on the air volume and the set damper position, the mode damper of the car air conditioning unit is controlled.

[0075] It should be noted that the user setting mode is a mode in which the user interacts with the car's air conditioning system through the control panel or other control devices to select and set the air supply mode of the car's air conditioning system.

[0076] In practice, when the face-blowing mode is used, it generally indicates that the driver or front passenger urgently needs rapid cooling or heating. In this case, the airflow mode of the car's air conditioning system is controlled by the user and executed according to the user-defined mode. Therefore, if the airflow mode includes a face-blowing mode, it can be determined that the airflow mode is a user-defined mode. At this time, the mode damper of the car's air conditioning unit is controlled to blow air according to the user-defined airflow volume and damper position.

[0077] For ease of understanding, the actual interaction process of a car air conditioning unit is used as an example, but this does not limit the scope of this solution. (Reference) Figure 4 , Figure 4 This is an interactive schematic diagram illustrating adaptive control of the mode damper in the first embodiment of the automotive air conditioning mode damper control method of the present invention. Because the air duct shares a single temperature sensor (e.g., ... Figure 3 As shown in the image, as long as the duct temperature sensor collects accurate air conditioner outlet temperature information, the accuracy of closed-loop temperature control of the air conditioning system can be achieved. It should be noted that when the air outlet direction does not include the duct where the duct temperature sensor is located, the airflow supplied to the duct temperature sensor should not be too large to avoid air leakage from the duct outlet. Figure 4 As shown, the method in this embodiment mainly involves a human-machine interface device, an automotive air conditioning unit, and an air conditioning controller (i.e., a control device). The human-machine interface device is connected to the air conditioning control device, allowing the user to individually set the airflow mode and temperature for each temperature zone (e.g., airflow mode, fan speed setting, AUTO mode, etc.), or select an automatic mode to automatically control the air conditioning temperature and fan speed. The human-machine interface device sends the user settings to the air conditioning control device via a CAN signal to control the mode damper of the automotive air conditioning unit for airflow. If the airflow mode does not include a face-blowing mode, it enters a mode damper adaptive mode. In this mode, the air conditioning control device acquires environmental information, such as ambient temperature, vehicle interior temperature, and air conditioning unit vent temperature information. It adaptively controls the mode damper based on the environmental information, then converts it into the blower duty cycle and mode damper motor steps, and sends this information to the automotive air conditioning unit. This ensures closed-loop control of the automotive air conditioning temperature through the opening of the mode damper in any airflow mode.

[0078] In this embodiment, the control device first detects whether the air outlet mode of the car's air conditioning unit includes a face-blowing mode. This allows the system to determine whether the damper control is in the user-defined mode. If the air outlet mode does not include a face-blowing mode, it indicates that the driver or front passenger is not in a state requiring rapid cooling or heating; in this case, the air outlet mode of the car's air conditioning system is random. Therefore, the fan speed setting of the air outlet mode can be detected. Since different fan speed settings can achieve different levels of fine-grained fan speed control, the fan speed setting can be determined first to quickly determine the blower duty cycle. Next, the blower duty cycle can be further processed to obtain the corresponding mode damper motor steps. Finally, based on the mode damper motor steps, the opening of the mode damper in the car's air conditioning unit is controlled, changing the direction of the air conditioning system's airflow. This adjustment of the mode damper motor steps makes the airflow direction of the air conditioning system more precise and flexible, providing better air conditioning performance and comfort. Since this embodiment determines the blower duty cycle of the car air conditioning unit based on the air volume setting type when the air outlet mode of the car air conditioning unit does not include the face blowing mode, it determines the mode damper motor step number to control the opening of the mode damper of the car air conditioning unit. This avoids the situation where traditional car air conditioning temperature control requires a large amount of calibration resources due to open-loop control, which increases costs. This ensures that closed-loop control of the car air conditioning temperature is achieved through the opening of the mode damper in any air outlet mode.

[0079] refer to Figure 5 , Figure 5 This is a flowchart illustrating the second embodiment of the automotive air conditioning mode damper control method of the present invention.

[0080] Based on the first embodiment described above, in this embodiment, step S30 includes:

[0081] Step S31: The position of the mode damper of the car air conditioning unit is obtained by converting the duty cycle of the blower to the position using a preset damper opening calibration table. The preset damper opening calibration table includes the mapping relationship between the blower duty cycle and the mode damper opening.

[0082] It should be noted that the preset damper opening calibration table is a parameter table in the automotive air conditioning system, recording the opening values ​​of each damper under different air supply modes. Using the preset damper opening calibration table, the position of the mode damper in the automotive air conditioning unit can be quickly determined based on the blower duty cycle.

[0083] Specifically, for ease of understanding, please refer to Table 1. Assume that the air conditioning setting is D, the blower duty cycle corresponding to the air conditioning setting is Y, and the temperature sensor is placed in the air blowing duct. The blower duty cycle corresponding to each setting is formed into a calibration table through the air conditioning system bench or vehicle calibration.

[0084] Table 1

[0085] Duty cycle 0 <![CDATA[Y1]]> <![CDATA[Y2]]> <![CDATA[Y3]]> … <![CDATA[Y (D-1) ]]> <![CDATA[Y D ]]> Mode air damper foot opening <![CDATA[K0]]> <![CDATA[K1]]> <![CDATA[K2]]> <![CDATA[K3]]> … <![CDATA[K (D-1) ]]> <![CDATA[K D ]]>

[0086] If the temperature sensor is placed in the foot blowing duct, the foot blowing opening of the mode damper in the table can be changed to the face blowing opening of the mode damper. This embodiment does not impose any restrictions on this.

[0087] Step S32: Perform numerical conversion on the position of the mode damper to obtain the number of steps for the mode damper motor.

[0088] In practical implementation, the control device can use the aforementioned preset damper opening calibration table to calculate the position of the blower duty cycle and obtain the mode damper position of the automotive air conditioning unit; then, it can perform numerical calculations on the mode damper position to obtain the mode damper motor steps. Thus, the mode damper position can be obtained quickly and accurately using the preset damper opening calibration table.

[0089] Further, in this embodiment, step S31 includes: determining whether the blower duty cycle is within a preset duty cycle range; if the blower duty cycle is not within the preset duty cycle range, then the blower duty cycle is positionally converted according to a preset damper opening calibration table to obtain the mode damper position of the vehicle air conditioning unit; if the blower duty cycle is within the preset duty cycle range, then the blower duty cycle is linearly interpolated according to a preset mode damper opening algorithm to obtain the mode damper position of the vehicle air conditioning unit.

[0090] It should be noted that the preset duty cycle range is a pre-set parameter range for the blower's duty cycle. Within this range, the mapping relationship of the preset damper opening calibration table is not very accurate. In this case, the preset mode damper opening algorithm can be used for calculation.

[0091] For example, the air conditioner blower occupies space Y in Y (D-1) and Y D Between, the mode damper opening K is at K (D-1) and K D Linear interpolation is performed between them. When the air conditioning mode is AUTO, the air conditioning duty cycle is automatically controlled by the air conditioning control equipment. When the duty cycle is Y... x And Y (D-1) <Y x ≤Y D The preset mode damper opening algorithm is as follows:

[0092] K x =k D ×Y x +d D ;

[0093] Among them, K x =(K D -K (D-1) ) / (YD -Y (D-1) );d D =(K (D-1) Y D -K D Y (D-1) ) / (Y D -Y (D-1) ).

[0094] In practical implementation, if the blower duty cycle is not within the preset duty cycle range, the position of the mode damper in the automotive air conditioning unit is obtained by calculating the blower duty cycle according to the preset damper opening calibration table. If the blower duty cycle is within the preset duty cycle range, the mapping relationship of the preset damper opening calibration table is not very accurate. In this case, linear interpolation calculation can be performed using a preset mode damper opening algorithm to obtain the mode damper position of the automotive air conditioning unit. Thus, a more accurate mode damper position can be determined according to different duty cycle conditions.

[0095] Furthermore, in this embodiment, step S40 includes: generating a motor step count instruction based on the motor step count of the mode damper; sending the motor step count instruction to the vehicle air conditioning unit so that the vehicle air conditioning unit controls the opening degree of the mode damper according to the motor step count instruction.

[0096] It should be noted that the motor step command refers to the command that controls the movement of the stepper motor of the blower. By using the motor step command, the angle and speed of the stepper motor's rotation are controlled, thereby achieving precise control of the stepper motor.

[0097] In practical implementation, for ease of understanding, please refer to... Figure 6 , Figure 6 This is a schematic diagram illustrating the determination of the mode damper position in the second embodiment of the automotive air conditioning mode damper control method of the present invention. During the determination of the mode damper position, a calculation model can be pre-established in the control device. The mode damper position is calculated by inputting information such as the blower duty cycle and the mode damper airflow. The input values ​​may include: the blower duty cycle, calculated using the blower parameter table stored in the air conditioning control device or the automatic airflow control model in the air conditioning controller; a mode damper airflow allocation table, which can be measured by the air conditioning unit test bench and stored in the air conditioning control device, and retrieved when needed; and the minimum airflow required by the duct temperature sensor, which can be measured by the air conditioning unit test bench and stored in the air conditioning controller, and retrieved when needed. The output value is the mode damper position, with a value range of 0 to 1000. The air conditioning control device converts the mode damper position value into mode damper motor steps and sends it to the automotive air conditioning unit so that the air conditioning unit executes the mode damper motor step command.

[0098] Further, in this embodiment, step S20 includes: if the air outlet mode does not include the face blowing mode, then detecting the air volume level type of the air outlet mode, the air volume level type including manual level and automatic level; when the air volume level type is manual level, looking up the blower duty cycle of the car air conditioning unit through the manual level blower parameter table; when the air volume level type is automatic level, determining the blower duty cycle of the car air conditioning unit according to the current air outlet temperature of the mode damper.

[0099] It should be noted that the manual transmission blower parameter table is for blowers used in manual transmissions. By consulting the manual transmission blower parameter table, you can find the duty cycle of the blower in the car's air conditioning unit according to the gear.

[0100] Understandably, the current air outlet temperature is the air outlet temperature of the car's air conditioning unit.

[0101] In practical implementation, after the mode damper enters adaptive mode, the control device first detects the airflow setting type. If the airflow setting type is manual, the control device can find the blower duty cycle through the manual blower parameter table; if the airflow setting is automatic, the control device can calculate the blower duty cycle based on the current outlet air temperature. Thus, the blower duty cycle can be quickly determined based on the airflow setting type.

[0102] Furthermore, in this embodiment, determining the blower duty cycle of the automotive air conditioning unit based on the current outlet temperature of the mode damper when the airflow mode type is automatic includes: obtaining the current outlet temperature through the duct temperature sensor of the mode damper when the airflow mode type is automatic, wherein the duct temperature sensor is located at the front air outlet or foot air outlet of the automotive air conditioning unit; obtaining the duct airflow and interior temperature corresponding to the mode damper; and determining the blower duty cycle of the automotive air conditioning unit based on the current outlet temperature, the interior temperature, and the duct airflow.

[0103] In specific implementations, for ease of understanding, the following is proposed based on the above embodiments. Figure 7 , Figure 7 This is a schematic flowchart of the second embodiment of the automotive air conditioning mode damper control method of the present invention. Figure 7 The flowchart below illustrates the adaptive control of the mode damper, and the specific process is described as follows:

[0104] 1. After the air conditioner is turned on, users can set the air outlet mode and air volume through the human-computer interaction device.

[0105] 2. The air conditioning control equipment receives the air conditioning outlet mode and fan speed signals, and detects whether the outlet mode includes a face-blowing mode. If the outlet mode includes a face-blowing mode, the mode damper will operate according to the current mode set by the user; if the outlet mode does not include a face-blowing mode, it will enter the mode damper adaptive mode.

[0106] 3. After the mode damper enters adaptive mode, the air conditioning control equipment first detects the fan speed setting. If the fan speed setting is manual, the air conditioning control equipment can find the blower duty cycle through the manual blower parameter table; if the fan speed setting is AUTO (automatic), the air conditioning control equipment calculates the blower duty cycle based on the ambient temperature and the vehicle interior temperature information.

[0107] 4. After the air conditioning control equipment calculates the blower duty cycle, it calculates the mode damper position according to the mode damper position model and converts it into the mode damper motor steps.

[0108] 5. Finally, the air conditioning control equipment sends the mode damper motor step count command to the air conditioning unit, and the air conditioning unit executes it.

[0109] The above process ensures closed-loop control of the car's air conditioning temperature by adjusting the opening of the mode damper in any air outlet mode.

[0110] In this embodiment, the control device can calculate the position of the mode damper of the vehicle's air conditioning unit by converting the blower duty cycle using the aforementioned preset damper opening calibration table; then, it performs numerical conversion on the mode damper position to obtain the mode damper motor steps. Thus, the mode damper position can be obtained quickly and accurately using the preset damper opening calibration table. Furthermore, if the blower duty cycle is not within the preset duty cycle range, the position of the blower duty cycle is calculated according to the preset damper opening calibration table to obtain the mode damper position of the vehicle's air conditioning unit; if the blower duty cycle is within the preset duty cycle range, the mapping relationship of the preset damper opening calibration table is not very accurate. In this case, linear interpolation calculation can be performed using a preset mode damper opening algorithm to obtain the mode damper position of the vehicle's air conditioning unit. Therefore, a more accurate mode damper position can be determined based on different duty cycle conditions. Furthermore, after the mode damper enters adaptive mode, the control device can first detect the airflow level type. If the airflow setting is manual, the control equipment can find the blower duty cycle through the manual blower parameter table; if the airflow setting is automatic, the control equipment can calculate the blower duty cycle based on the current outlet air temperature. Therefore, the blower duty cycle can be quickly determined based on the airflow setting type.

[0111] Furthermore, this embodiment of the invention also proposes a storage medium storing an automotive air conditioning mode damper control program, which, when executed by a processor, implements the steps of the automotive air conditioning mode damper control method described above.

[0112] Reference Figure 8 , Figure 8 This is a structural block diagram of the first embodiment of the automotive air conditioning mode damper control device of the present invention.

[0113] like Figure 8 As shown, the automotive air conditioning mode damper control device proposed in this embodiment of the invention includes:

[0114] The mode detection module 801 is used to detect whether the air outlet mode of the car air conditioning unit includes the face blowing mode.

[0115] The duty cycle determination module 802 is used to detect the air volume level type of the air outlet mode if the air outlet mode does not include the face blowing mode, and determine the blower duty cycle of the car air conditioning unit according to the air volume level type.

[0116] The motor step counting module 803 is used to perform position processing on the duty cycle of the blower to obtain the motor step count of the mode damper.

[0117] The damper control module 804 is used to control the opening degree of the mode damper of the vehicle air conditioning unit based on the number of steps of the mode damper motor.

[0118] In this embodiment, the control device first detects whether the air outlet mode of the car's air conditioning unit includes a face-blowing mode. This allows the system to determine whether the damper control is in the user-defined mode. If the air outlet mode does not include a face-blowing mode, it indicates that the driver or front passenger is not in a state requiring rapid cooling or heating; in this case, the air outlet mode of the car's air conditioning system is random. Therefore, the fan speed setting of the air outlet mode can be detected. Since different fan speed settings can achieve different levels of fine-grained fan speed control, the fan speed setting can be determined first to quickly determine the blower duty cycle. Next, the blower duty cycle can be further processed to obtain the corresponding mode damper motor steps. Finally, based on the mode damper motor steps, the opening of the mode damper in the car's air conditioning unit is controlled, changing the direction of the air conditioning system's airflow. This adjustment of the mode damper motor steps makes the airflow direction of the air conditioning system more precise and flexible, providing better air conditioning performance and comfort. Since this embodiment determines the blower duty cycle of the car air conditioning unit based on the air volume setting type when the air outlet mode of the car air conditioning unit does not include the face blowing mode, it determines the mode damper motor step number to control the opening of the mode damper of the car air conditioning unit. This avoids the situation where traditional car air conditioning temperature control requires a large amount of calibration resources due to open-loop control, which increases costs. This ensures that closed-loop control of the car air conditioning temperature is achieved through the opening of the mode damper in any air outlet mode.

[0119] Based on the first embodiment of the automotive air conditioning mode damper control device of the present invention, a second embodiment of the automotive air conditioning mode damper control device of the present invention is proposed.

[0120] In this embodiment, the motor step counting module 803 is also used to perform position conversion of the blower duty cycle by using a preset damper opening calibration table to obtain the mode damper position of the car air conditioning unit. The preset damper opening calibration table includes a mapping relationship between the blower duty cycle and the mode damper opening. The mode damper position is then numerically converted to obtain the mode damper motor step count.

[0121] Furthermore, the motor step counting module 803 is also used to determine whether the blower duty cycle is within a preset duty cycle range; if the blower duty cycle is not within the preset duty cycle range, the blower duty cycle is converted according to a preset damper opening calibration table to obtain the mode damper position of the automotive air conditioning unit; if the blower duty cycle is within the preset duty cycle range, the blower duty cycle is linearly interpolated according to a preset mode damper opening algorithm to obtain the mode damper position of the automotive air conditioning unit.

[0122] Furthermore, the damper control module 804 is also used to generate a motor step count instruction based on the motor step count of the mode damper; and send the motor step count instruction to the vehicle air conditioning unit so that the vehicle air conditioning unit controls the opening degree of the mode damper according to the motor step count instruction.

[0123] Furthermore, the duty cycle determination module 802 is also used to detect the airflow mode type of the airflow mode if the airflow mode does not include the face blowing mode, wherein the airflow mode type includes manual mode and automatic mode; when the airflow mode type is manual mode, the blower duty cycle of the car air conditioning unit is looked up through the manual mode blower parameter table; when the airflow mode type is automatic mode, the blower duty cycle of the car air conditioning unit is determined according to the current air outlet temperature of the mode damper.

[0124] Furthermore, the duty cycle determination module 802 is also used to obtain the current air outlet temperature through the air duct temperature sensor of the mode damper when the air volume mode type is automatic, the air duct temperature sensor being located at the front air outlet or foot air outlet of the car air conditioning unit; obtain the air duct air volume and the interior temperature corresponding to the mode damper; and determine the blower duty cycle of the car air conditioning unit based on the current air outlet temperature, the interior temperature, and the air duct air volume.

[0125] Furthermore, the automotive air conditioning mode damper control device also includes a user mode 805, which is used to determine that the air outlet mode is a user-defined mode if the air outlet mode includes a face blowing mode, the user-defined mode including air volume and set damper position; and to control the mode damper of the automotive air conditioning unit based on the air volume and the set damper position.

[0126] Other embodiments or specific implementations of the automotive air conditioning mode damper control device of the present invention can be referred to the above-described method embodiments, and will not be repeated here.

[0127] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0128] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0129] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory / random access memory, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0130] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for controlling the air damper of an automotive air conditioning system, characterized in that, The automotive air conditioning mode damper control method includes: Check if the airflow modes of the car's air conditioning unit include a face-blowing mode; If the air outlet mode does not include the face blowing mode, then the air volume level type of the air outlet mode is detected, and the air volume level type includes manual level and automatic level; when the air volume level type is manual level, the blower duty cycle of the car air conditioning unit is found through the manual level blower parameter table; when the air volume level type is automatic level, the blower duty cycle of the car air conditioning unit is determined according to the current air outlet temperature of the mode damper. The duty cycle of the blower is processed to obtain the number of steps of the mode damper motor; The opening degree of the mode damper of the vehicle air conditioning unit is controlled based on the number of steps of the mode damper motor.

2. The automotive air conditioning mode damper control method as described in claim 1, characterized in that, The step of performing position processing on the duty cycle of the blower to obtain the mode damper motor steps includes: The position of the mode damper of the car air conditioning unit is obtained by converting the duty cycle of the blower through a preset damper opening calibration table. The preset damper opening calibration table includes the mapping relationship between the blower duty cycle and the mode damper opening. The position of the mode damper is numerically converted to obtain the number of motor steps for the mode damper.

3. The automotive air conditioning mode damper control method as described in claim 2, characterized in that, The step of calculating the position of the mode damper of the automotive air conditioning unit by using a preset damper opening calibration table to convert the duty cycle of the blower includes: Determine whether the duty cycle of the blower is within the preset duty cycle range; If the blower duty cycle is not within the preset duty cycle range, the blower duty cycle is converted according to the preset damper opening calibration table to obtain the mode damper position of the automotive air conditioning unit. If the blower duty cycle is within the preset duty cycle range, then the blower duty cycle is linearly interpolated according to the preset mode damper opening algorithm to obtain the mode damper position of the automotive air conditioning unit.

4. The automotive air conditioning mode damper control method as described in claim 1, characterized in that, The step of controlling the opening degree of the mode damper of the vehicle air conditioning unit based on the motor step number includes: Based on the motor steps of the damper in the aforementioned mode, a motor step count instruction is generated; The motor step count command is sent to the vehicle air conditioning unit so that the vehicle air conditioning unit controls the opening of the mode damper according to the motor step count command.

5. The automotive air conditioning mode damper control method as described in claim 1, characterized in that, When the airflow mode is set to automatic, determining the blower duty cycle of the automotive air conditioning unit based on the current outlet air temperature of the mode damper includes: When the airflow mode is set to automatic, the current air outlet temperature is obtained through the air duct temperature sensor of the mode damper. The air duct temperature sensor is located at the front air outlet or foot air outlet of the car air conditioning unit. Obtain the airflow and vehicle interior temperature corresponding to the mode damper; Based on the current air outlet temperature, the vehicle interior temperature, and the airflow in the duct, the blower duty cycle of the vehicle air conditioning unit is determined.

6. The automotive air conditioning mode damper control method according to any one of claims 1 to 3, characterized in that, After determining whether the air outlet mode of the car's air conditioning unit includes a face-blowing mode, the method also includes: If the air outlet mode includes a face blowing mode, then the air outlet mode is determined to be a user-defined mode, and the user-defined mode includes the air volume and the position of the set damper. Based on the air volume and the set damper position, the mode damper of the car air conditioning unit is controlled.

7. A car air conditioning mode damper control device, characterized in that, The device includes: The mode detection module is used to detect whether the air outlet mode of the car's air conditioning unit includes a face blowing mode; The duty cycle determination module is used to detect the airflow mode type if the airflow mode does not include the face blowing mode, wherein the airflow mode type includes manual mode and automatic mode; when the airflow mode type is manual mode, the module looks up the blower duty cycle of the car air conditioning unit through the manual mode blower parameter table; when the airflow mode type is automatic mode, the module determines the blower duty cycle of the car air conditioning unit based on the current air outlet temperature of the mode damper. The motor step module is used to perform position processing on the duty cycle of the blower to obtain the motor step count of the mode damper. The damper control module is used to control the opening degree of the mode damper of the vehicle air conditioning unit based on the number of steps of the mode damper motor.

8. A car air conditioning mode damper control device, characterized in that, The device includes: a memory, a processor, and an automotive air conditioning mode damper control program stored in the memory and executable on the processor, the automotive air conditioning mode damper control program being configured to implement the steps of the automotive air conditioning mode damper control method as described in any one of claims 1 to 6.

9. A storage medium, characterized in that, The storage medium stores a car air conditioning mode damper control program, which, when executed by a processor, implements the steps of the car air conditioning mode damper control method as described in any one of claims 1 to 6.

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