Vehicle fragrance control method, system, vehicle and product

Abstract

The application discloses a kind of vehicle-mounted fragrance control method, system, vehicle and product, method includes: obtaining the fragrance combination information selected by user, and target fragrance curve is generated according to the fragrance combination information, the target fragrance curve is used to characterize the target release state of multiple fragrance on time axis;Obtain the release characteristic parameter corresponding to each fragrance type participating in release in current control period, current vehicle environment information and current fragrance state information;According to the target fragrance curve and the current fragrance state information, determine the release deviation of each fragrance type in current control period;According to the release deviation, the release characteristic parameter and the current vehicle environment information, the compensation control quantity of corresponding fragrance type is generated;According to the compensation control quantity, multiple fragrance release units are controlled to release in stages, so that the actual fragrance state in vehicle changes with time and follows the target fragrance curve.

Description

Technical Field

[0001] This application relates to the field of in-vehicle fragrance control technology, and in particular to an in-vehicle fragrance control method, system, vehicle, and product. Background Technology

[0002] With the increasing demand for vehicle cabin comfort, in-vehicle fragrance systems are gradually being applied to vehicle air environment regulation. These systems typically feature multiple fragrance boxes, multiple fragrance chambers, or multiple fragrance channels, and control the release of different fragrances through dampers, fans, valves, or release durations, allowing users to select fragrances or adjust fragrance concentrations.

[0003] However, in multi-fragrance release scenarios, different fragrances exhibit variations in evaporation rate, diffusion rate, residual characteristics, and perceived intensity. Factors such as vehicle cabin temperature, air conditioning airflow, window status, number of occupants, and the condition of the fragrance channel also affect the actual release and diffusion effect of the fragrance within the vehicle. If the release of multiple fragrances is controlled solely according to a fixed sequence, fixed opening degree, or fixed release duration, it is easy to result in situations such as some fragrances having excessively high concentrations, some fragrances being under-released, and unstable transitions between fragrances, making it difficult for the actual fragrance state inside the vehicle to present the expected multi-fragrance variation process.

[0004] Therefore, how to compensate and control the phased release of multiple fragrances in a vehicle setting based on the fragrance's own release characteristics, the vehicle environment, and the current fragrance status is a technical problem that needs to be solved. Summary of the Invention

[0005] This application provides a vehicle fragrance control method, system, and vehicle to improve the problem that when multiple fragrances are released in stages in the vehicle, they are easily affected by the fragrance release characteristics and the vehicle environment, making it difficult for the actual fragrance state to follow the changes of the target fragrance.

[0006] To achieve the above objectives, some embodiments of this application provide the following aspects:

[0007] In a first aspect, this application provides a method for controlling an in-vehicle fragrance, the method comprising:

[0008] Obtain the fragrance combination information selected by the user, and generate a target fragrance curve based on the fragrance combination information. The target fragrance curve is used to characterize the target release state of multiple fragrances on the time axis.

[0009] Obtain the release characteristic parameters of each fragrance type involved in the release, the current vehicle environment information, and the current fragrance status information within the current control cycle;

[0010] Based on the target fragrance profile and the current fragrance status information, determine the release deviation of each fragrance type within the current control period;

[0011] Based on the release deviation, the release characteristic parameters, and the current vehicle environment information, a compensation control quantity for the corresponding fragrance type is generated;

[0012] The compensation control amount controls multiple fragrance release units to release fragrance in stages, so that the actual fragrance state in the vehicle changes over time and follows the target fragrance curve.

[0013] Optionally, the fragrance combination information includes a first fragrance type, a second fragrance type, and a third fragrance type; the step of generating a target fragrance profile based on the fragrance combination information includes:

[0014] The starting release time, continuous release duration, target concentration change trend, and stage switching conditions for the first fragrance type, the second fragrance type, and the third fragrance type are determined respectively. Based on the starting release time, the continuous release duration, the target concentration change trend, and the stage switching conditions, target fragrance curves that are connected or partially overlapped on the time axis for each fragrance type are generated.

[0015] By setting the release time, duration, concentration trend, and phase switching conditions of the first, second, and third fragrances, multiple fragrances can be released in a way that connects or partially overlaps with each other, making it easier to create a phased fragrance atmosphere in the car and reducing the abrupt changes between different phases.

[0016] Optionally, obtaining the current fragrance status information includes:

[0017] Fragrance concentration detection values ​​are obtained by detection modules set in the target area of ​​the cabin, fragrance channel, air outlet, fragrance processing chamber or return air path, and the current fragrance status information of the corresponding fragrance type in the current control cycle is determined based on the fragrance concentration detection values.

[0018] By acquiring fragrance concentration detection values ​​in the target area of ​​the cabin, fragrance channel, air outlet, fragrance treatment chamber, or return air path, the control process can be adjusted based on the actual fragrance status inside the vehicle or channel, which helps to reduce the deviation of fixed release control in different cabin environments.

[0019] Optionally, obtaining the release characteristic parameters corresponding to each aroma type participating in the release within the current control cycle includes:

[0020] Identify the fragrance type information of the currently installed fragrance box, fragrance cavity, or fragrance medium, and read the corresponding calibrated release characteristic parameters based on the fragrance type information; wherein, the release characteristic parameters are used to characterize at least one of the following: evaporation rate, diffusion rate, residual decay, perception threshold, remaining fragrance amount, cumulative activation time, or material aging state of the corresponding fragrance type.

[0021] By identifying aroma information and reading the corresponding calibrated release characteristic parameters, the control process can take into account the differences in volatilization, diffusion, residue and usage status of different aromas, thereby providing a parameter basis that is closer to the actual release status for subsequent compensation control.

[0022] Optionally, generating a compensation control quantity for the corresponding fragrance type based on the release deviation, the release characteristic parameters, and the current vehicle environment information includes:

[0023] Using any fragrance type as the target fragrance type, when the release characteristic parameters of the target fragrance type indicate that the evaporation rate of the target fragrance type is higher than the baseline release rate corresponding to the target release stage, the release intensity of the target fragrance type in the current control period is reduced or the release duration is shortened; when the release characteristic parameters of the target fragrance type indicate that the evaporation rate of the target fragrance type is lower than the baseline release rate, the release intensity of the target fragrance type in the current control period is increased, the release duration is extended, or the release is initiated earlier.

[0024] By adjusting the release intensity, release duration, or release initiation time based on differences in evaporation rates, the problem of excessively strong high-volatile aromas and insufficient low-volatile aromas can be reduced, allowing aromas with different release characteristics to have more consistent release performance under the same target aroma profile.

[0025] Optionally, the current vehicle environment information includes at least one of the following: cabin temperature, fragrance box temperature, fragrance channel temperature, air conditioning outlet temperature, air conditioning airflow, window status, or number of occupants; the compensation control amount for generating the corresponding fragrance includes:

[0026] The environmental correction amount is determined based on the current vehicle environment information, and the release intensity, release sequence, stage switching time, or purging duration of the corresponding fragrance are corrected using the environmental correction amount.

[0027] By converting vehicle environmental information into environmental correction quantities and using these quantities to adjust release intensity, release sequence, stage switching time, or purging duration, the impact of changes in temperature, airflow, window status, or number of occupants on fragrance release and diffusion can be reduced, making the multi-fragrance release process more adaptable to different vehicle operating conditions and cabin environments.

[0028] Optionally, controlling multiple fragrance release units to release fragrance in stages according to the compensation control amount includes:

[0029] The compensation control quantity is converted into at least one of the following: damper opening, fan speed, release duration, release interval, micropump operating parameters, or purging parameters of the corresponding fragrance release unit; and when the release deviation of the same fragrance type meets the preset update conditions within multiple consecutive control cycles, the release characteristic parameters or compensation control quantity corresponding to the same fragrance type are updated based on the release deviation.

[0030] By converting the compensation control quantity into control parameters that the fragrance release unit can execute, the curve following and compensation logic can be implemented into the specific release execution process. At the same time, by updating the release characteristic parameters or compensation control quantity according to the release deviation in multiple consecutive control cycles, the system can adapt to long-term release deviations caused by fragrance medium consumption, material aging, or environmental changes.

[0031] Secondly, this application provides an in-vehicle fragrance control system, the system including a control module, a detection module and multiple fragrance release units;

[0032] The detection module is used to obtain the current fragrance status information;

[0033] The multiple fragrance release units are used to release multiple fragrances;

[0034] The control module is connected to the detection module and the plurality of fragrance release units respectively, and the control module is used to implement the vehicle fragrance control method described above.

[0035] Thirdly, this application provides a vehicle that includes the in-vehicle fragrance control system described in the second aspect.

[0036] Fourthly, some embodiments of this application also provide a computer program product, including a computer program / instructions that, when executed by a processor, implement the steps of the method described above.

[0037] Compared with related technologies, the solution provided in this application obtains the fragrance combination information selected by the user and generates a target fragrance curve, obtains the release characteristic parameters corresponding to each fragrance type, the current vehicle environment information, and the current fragrance state information, and determines the release deviation based on the target fragrance curve and the current fragrance state information. Then, it combines the release characteristic parameters and the current vehicle environment information to generate a compensation control quantity to control multiple fragrance release units to release in stages. This enables the actual fragrance state in the vehicle to change over time and follow the target fragrance curve, reducing the release deviation caused by differences in fragrance volatilization and diffusion, changes in the vehicle environment, or changes in fragrance state. Attached Figure Description

[0038] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0039] Figure 1 A flowchart illustrating an exemplary embodiment of this application is provided.

[0040] Figure 2 This is a schematic diagram of the framework of an in-vehicle fragrance control system provided for an exemplary embodiment of this application. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] In this embodiment of the disclosure, the collection, storage, use, processing, transmission, provision, and disclosure of user personal information comply with relevant laws and regulations and do not violate public order and good morals.

[0043] Figure 1 An exemplary embodiment of this application provides a vehicle-mounted fragrance control method. The method can be executed by a control module in a vehicle-mounted fragrance control system. The control module can communicate with the vehicle's infotainment system, central control screen, air conditioning control module, cabin domain controller, fragrance release units, and fragrance status detection components. Multiple fragrance release units can each correspond to different fragrance types. The control module controls the multiple fragrance release units in stages, causing the in-vehicle fragrance status to change over time. The method includes:

[0044] S101. Obtain the fragrance combination information selected by the user, and generate a target fragrance curve based on the fragrance combination information. The target fragrance curve is used to characterize the target release state of multiple fragrances on the time axis.

[0045] Specifically, fragrance combination information can be obtained by the user through the in-vehicle display interface, vehicle application, cockpit control entry, or other interactive entry points, or it can be pre-set and stored in the in-vehicle fragrance control system by the manufacturer. The manufacturer-preset fragrance combination information can include the combination relationship of multiple fragrance types, as well as the release curves, release order, release duration, release intensity changes, and stage transitions corresponding to each of the multiple fragrance types, used to create corresponding combined fragrances in different scenarios. For example, different fragrance types can be combined in a sequential, overlapping, or gradual release manner to create a refreshing, soothing, invigorating, or other preset fragrance effects.

[0046] In one embodiment, multiple fragrances can be configured to form the top, middle, and base notes of a target fragrance, respectively. The top note establishes the initial fragrance characteristics at the beginning of the fragrance release; the middle note establishes the main fragrance characteristics after the top note; and the base note establishes the lasting fragrance base after the middle note. The control module can determine the initial release time, release duration, and target release intensity of each fragrance based on the release curves of the top, middle, and base notes, causing multiple fragrances to be released in the vehicle in the order of top, middle, and base notes or in a partially overlapping relationship, thereby forming a layered fragrance combination.

[0047] After acquiring fragrance combination information, the control module maps multiple fragrance types onto a time axis to generate a target fragrance profile. The target fragrance profile can be a dataset used internally by the control module, or it can be a sequence of target release states arranged chronologically. Target release states can represent target concentration, target release amount, target release level, or other state quantities that characterize the fragrance release target.

[0048] Obtain the release characteristic parameters of each fragrance type involved in the release, the current vehicle environment information, and the current fragrance status information within the current control cycle;

[0049] S102. Obtain the release characteristic parameters of each fragrance type participating in the release during the current control cycle, the current vehicle environment information, and the current fragrance status information.

[0050] Specifically, the control module can determine one or more fragrances that need to be released within the current control cycle and obtain the release characteristic parameters corresponding to each fragrance. These release characteristic parameters reflect the volatilization, diffusion, or residue characteristics of the fragrance during the release process, enabling the control module to distinguish the possible release differences between different fragrances under the same control command. The release characteristic parameters can be pre-associated with and stored with the fragrance, or they can be written into a storage area accessible to the control module during fragrance medium installation, fragrance box identification, or system initialization.

[0051] Current vehicle environment information indicates vehicle operating conditions or cabin environment that affect fragrance release or diffusion. The control module can obtain current vehicle environment information from existing vehicle control systems, sensors, air conditioning systems, or cabin control systems. This information can serve as a reference for compensatory control, allowing the control module to adopt different release control strategies for the same target fragrance profile under different in-vehicle environments.

[0052] The current fragrance status information indicates the actual fragrance status inside the vehicle or in the fragrance flow path during the current control cycle. The control module can obtain the current fragrance status information through detection modules related to the fragrance status. The current fragrance status information can represent the current fragrance concentration, current fragrance intensity, or detection results related to the fragrance status. The control module can use the current fragrance status information as feedback to determine whether the current actual release state deviates from the target fragrance profile.

[0053] S103. Based on the target fragrance profile and the current fragrance status information, determine the release deviation of each fragrance type within the current control period.

[0054] Specifically, the control module can determine the corresponding target release state in the target fragrance profile based on the current control cycle, and compare the target release state with the current fragrance state information to obtain the release deviation of the corresponding fragrance type within the current control cycle. The release deviation can represent the degree of difference between the current fragrance state and the target release state, whether it is lower or higher than the target release state.

[0055] In one embodiment, the control module can determine the release deviation for each fragrance type involved in the release within the current control cycle. When multiple fragrance types are released simultaneously, the control module can calculate the release deviation for each fragrance type separately and adjust the control quantity of the corresponding fragrance release unit independently or collaboratively based on each release deviation. Therefore, the deviation of a particular fragrance type is not simply replaced by overall concentration adjustment, but can be mapped to the release control process of that specific fragrance type.

[0056] S104. Generate a compensation control quantity for the corresponding fragrance type based on the release deviation, the release characteristic parameters, and the current vehicle environment information.

[0057] Specifically, after determining the release deviation, the control module does not simply increase or decrease the release amount based on the deviation. Instead, it further combines the release characteristic parameters of the corresponding fragrance type with the current vehicle environment information to generate a compensation control quantity. The compensation control quantity is used to correct the release process of the corresponding fragrance type within the current control cycle, so that the actual release state changes towards the target release state corresponding to the target fragrance curve.

[0058] In one embodiment, when the release deviation indicates that the current fragrance state is lower than the target release state, the control module can determine the release response capability of the corresponding fragrance based on the release characteristic parameters, and determine the required increase in release compensation based on the current vehicle environment information. When the release deviation indicates that the current fragrance state is higher than the target release state, the control module can determine whether there is strong residue of the corresponding fragrance based on the release characteristic parameters, and determine the required decrease in release compensation or subsequent processing strategy based on the current vehicle environment information. In this way, the compensation control quantity reflects not only the feedback deviation, but also the release differences of the fragrance itself and the influence of the vehicle environment.

[0059] S105. Control multiple fragrance release units to release fragrance in stages according to the compensation control amount, so that the actual fragrance state in the car changes over time and follows the target fragrance curve.

[0060] Specifically, the control module can convert the compensation control quantity into control commands that the fragrance release unit can execute, and send them to the corresponding fragrance release unit. Multiple fragrance release units can release fragrances in the order of the stages corresponding to the target fragrance curve, or they can release fragrances in partially overlapping stages, so that the fragrance state in the vehicle gradually changes over time. In subsequent control cycles, the control module continues to acquire the current fragrance state information and repeats the deviation determination, compensation control quantity generation, and release control process, thereby forming a feedback-based staged release control.

[0061] In this embodiment, by first generating a target fragrance curve to characterize the target release state of multiple fragrances on the time axis, then determining the release deviation by combining the current fragrance state information, and further combining the release characteristic parameters and the current vehicle environment information to generate a compensation control quantity, the phased release process of multiple fragrance release units can adapt to the release characteristics of different fragrances and changes in the vehicle environment, reduce the deviation of the actual fragrance state from the target fragrance curve, and enable the vehicle to form a multi-fragrance fragrance that changes over time.

[0062] In one embodiment, the fragrance combination information includes a first fragrance type, a second fragrance type, and a third fragrance type; generating a target fragrance profile based on the fragrance combination information includes:

[0063] The starting release time, continuous release duration, target concentration change trend, and stage switching conditions for the first fragrance type, the second fragrance type, and the third fragrance type are determined respectively. Based on the starting release time, the continuous release duration, the target concentration change trend, and the stage switching conditions, target fragrance curves that are connected or partially overlapped on the time axis for each fragrance type are generated.

[0064] Specifically, the fragrance combination information includes a first fragrance type, a second fragrance type, and a third fragrance type. The first, second, and third fragrance types can each correspond to different fragrance release units, or they can each correspond to different fragrance chambers or different fragrance media within the same fragrance device. The first, second, and third fragrance types can be used to form different layers of the target fragrance combination. For example, the first fragrance type can be used to form the fragrance characteristics at the initial stage of release, the second fragrance type can be used to form the main fragrance characteristics during the release process, and the third fragrance type can be used to form the persistent fragrance base at the end of release.

[0065] The control module can determine the initial release time, duration of continuous release, target concentration trend, and stage switching conditions for the first, second, and third fragrance types, respectively. The initial release time determines from which moment in the target fragrance profile the corresponding fragrance type begins to release; the duration of continuous release determines the duration of the corresponding fragrance type's effect within the target fragrance profile; the target concentration trend determines the manner in which the concentration of the corresponding fragrance type changes during the release phase, such as increasing, maintaining, decreasing, gradually changing, or changing in segments; and the stage switching conditions determine the conditions for switching from a fragrance-dominated release phase to a fragrance-dominated release phase, such as reaching a preset time, reaching a preset concentration, meeting preset environmental conditions, or meeting preset state feedback conditions.

[0066] In one embodiment, the first, second, and third fragrances can be sequentially released over time. For example, the first fragrance is released during a first time period, the second fragrance begins to be released at or near the end of the first fragrance's release, and the third fragrance begins to be released at or near the end of the second fragrance's release. In this way, the in-car fragrance can gradually transition from the initial fragrance characteristics to the main fragrance characteristics, and then to the persistent fragrance base.

[0067] In another embodiment, the first, second, and third fragrances may partially overlap on the timeline. For example, after the first fragrance has been released for a period of time, the second fragrance begins to be released before the first fragrance has completely finished; after the second fragrance has been released for a period of time, the third fragrance begins to be released before the second fragrance has completely finished. In this way, a transition zone can be formed between the different fragrances, making the changes in the car's fragrance more smooth and reducing the abruptness when switching between different release stages.

[0068] Furthermore, the control module can generate target fragrance curves that connect or partially overlap with each other on the time axis, based on the initial release time, duration of continuous release, target concentration change trend, and stage switching conditions corresponding to the first, second, and third fragrances. The target fragrance curves can include the target release states of the first, second, and third fragrances within each control cycle. Therefore, the control module can determine the target release state of each fragrance within the current control cycle based on the target fragrance curves during subsequent control processes, and perform compensatory control by combining the current fragrance state information, release characteristic parameters, and current vehicle environment information.

[0069] In this embodiment, by setting the start release time, continuous release duration, target concentration change trend and stage switching conditions for the first fragrance, the second fragrance and the third fragrance respectively, multiple fragrances can form a controllable connection or overlap relationship on the time axis, thereby supporting the hierarchical release of multi-fragrance atmosphere in the car.

[0070] In one embodiment, obtaining the current fragrance status information includes:

[0071] Fragrance concentration detection values ​​are obtained by detection modules set in the target area of ​​the cabin, fragrance channel, air outlet, fragrance processing chamber or return air path, and the current fragrance status information of the corresponding fragrance type in the current control cycle is determined based on the fragrance concentration detection values.

[0072] Specifically, the detection module can be set at one or more locations in the fragrance release path or the cabin airflow path. When the detection module is set in the fragrance channel or fragrance processing chamber, it can be closer to the fragrance release source to reflect the fragrance state after the fragrance release unit outputs; when the detection module is set in the air outlet, it can be used to reflect the output state of the fragrance before it enters the cabin; when the detection module is set in the target area of ​​the cabin, it can be used to reflect the fragrance state near the area actually perceived by the occupant; when the detection module is set in the return air path, it can be used to reflect the overall state of the fragrance mixture in the cabin.

[0073] In one embodiment, the detection module may include an odor sensor, a VOC sensor, an electronic nose module, or other detectors capable of detecting changes in fragrance concentration. The control module may read the fragrance concentration detection value output by the detection module according to a preset control cycle and convert the fragrance concentration detection value into current fragrance state information. The current fragrance state information may include the current fragrance concentration, the current fragrance intensity, the current fragrance change trend, or a state quantity corresponding to the target release state.

[0074] Furthermore, when the detection module is located in multiple positions, the control module can determine the current fragrance status information based on the detection values ​​from different locations. For example, the control module can determine the output status of the fragrance release unit based on the detection values ​​in the fragrance channel or fragrance processing chamber, determine the actual state of the fragrance after it is delivered into the vehicle based on the detection values ​​in the air vent or target area of ​​the cabin, and determine the overall state of the fragrance diffusion in the vehicle based on the detection values ​​in the return air path. The control module can select one of the detection values ​​as the current fragrance status information, or it can generate the current fragrance status information after weighted processing, filtering, or consistency judgment of multiple detection values.

[0075] In one embodiment, the control module can determine the detection value related to the corresponding fragrance from the fragrance concentration detection values ​​output by the detection module based on the fragrances participating in the release during the current control cycle, and use the detection value as the current fragrance state information of the corresponding fragrance. If multiple fragrances participate in the release simultaneously during the current control cycle, the control module can obtain the fragrance state information corresponding to each fragrance separately, or determine the current fragrance state information corresponding to each fragrance based on the detection response relationship of the detection module to different fragrances.

[0076] In another embodiment, when the detection module cannot distinguish specific fragrance types, the control module can determine the current fragrance status information corresponding to each fragrance type by combining historical release amounts, fragrance evaporation parameters, and total VOC detection values. Specifically, historical release amounts can include the release duration, release intensity, damper opening, fan speed, micropump operating parameters, or release frequency of each fragrance type within one or more historical control cycles; fragrance evaporation parameters can be used to characterize the evaporation rate, diffusion rate, or residual decay characteristics of the corresponding fragrance type; the total VOC detection value can be obtained by VOC sensors installed in the fragrance channel, air outlet, cabin target area, or return air path. The control module can determine the contribution relationship of each fragrance type to the current total VOC detection value based on the historical release amounts and fragrance evaporation parameters of each fragrance type, and thereby obtain the estimated fragrance concentration value corresponding to each fragrance type.

[0077] Furthermore, the control module can use the estimated fragrance concentration value corresponding to each fragrance type as the current fragrance state information, and compare the estimated fragrance concentration value with the target release state corresponding to the current control cycle in the target fragrance curve to determine the release deviation of the corresponding fragrance type. Subsequently, the control module generates a compensation control quantity based on the release deviation, release characteristic parameters, and current vehicle environment information, so that deviation correction can still be performed for different fragrance types even when the sensor cannot directly distinguish specific fragrance types.

[0078] In this embodiment, by setting detection modules in the target area of ​​the cabin, the fragrance channel, the air outlet, the fragrance processing chamber, or the return air path, and obtaining the current fragrance status information based on the detection modules, the compensation control process can refer to the fragrance release path or the actual fragrance status in the cabin area, thereby reducing the release deviation caused by controlling only by a fixed time or a fixed release intensity.

[0079] In one embodiment, obtaining the release characteristic parameters corresponding to each fragrance type participating in the release within the current control cycle includes: identifying the fragrance type information of the currently installed fragrance box, fragrance chamber, or fragrance medium, and reading the corresponding calibrated release characteristic parameters based on the fragrance type information. The fragrance type information is used to indicate the fragrance type, formula, fragrance note level, or applicable release strategy corresponding to the currently installed fragrance medium. The control module can identify the fragrance type information before the fragrance box is installed, the vehicle is powered on, the user selects a fragrance note combination, or before the fragrance release begins, to determine the fragrance types participating in the release within the current control cycle.

[0080] Specifically, fragrance information can be obtained through resistive identification, RFID, NFC, QR code, EEPROM, or manual input by the user. For example, different fragrance boxes can be equipped with identification elements of different resistance values, and the control module determines the fragrance information by detecting the resistance value; or, RFID tags, NFC tags, QR codes, or EEPROM memory can be set on the fragrance box, and the control module determines the fragrance information by reading the information in the tag or memory; or, when the system cannot automatically identify the fragrance box, the user can manually input or confirm the fragrance information through the in-vehicle display interface or in-vehicle application.

[0081] In one embodiment, the release characteristic parameters may include at least one of the following: evaporation rate, diffusion rate, residual decay, perception threshold, remaining fragrance amount, cumulative activation time, or material aging state, used to characterize the corresponding fragrance. Evaporation rate reflects the speed at which the fragrance medium evaporates from a liquid, solid, or carrier material to form odor molecules; diffusion rate reflects the diffusion ability of the fragrance in the fragrance channel, fragrance processing chamber, or cabin air; residual decay reflects the residue and decay process of the fragrance in the channel or cabin after release ceases; perception threshold reflects the concentration or intensity range required for the user to perceive the corresponding fragrance; and remaining fragrance amount, cumulative activation time, and material aging state reflect the state changes of the fragrance medium during its usage period.

[0082] Furthermore, the release characteristic parameters can be written through factory calibration, cloud download, vehicle local learning, or after-sales replacement of the fragrance box. Factory calibration can pre-establish calibration parameters for different fragrance boxes; cloud download can update the release characteristic parameters according to the fragrance box model or fragrance formula after the vehicle is connected to the network; vehicle local learning can correct the release characteristic parameters based on release deviations, fragrance concentration detection values, and control quantities during actual vehicle use; when the fragrance box is replaced after-sales, the release characteristic parameters corresponding to the new fragrance box can be written by maintenance equipment, vehicle infotainment system, or the fragrance box's own storage medium.

[0083] In one embodiment, the release characteristic parameters can be set individually for each fragrance type, or they can be set separately for a first fragrance group, a second fragrance group, and a third fragrance group. For example, for the first fragrance type used to form the initial aroma characteristics, its evaporation rate can be relatively high, and the control module can record its rapid concentration rise characteristic in the release characteristic parameters; for the third fragrance type used to form the persistent aroma base, its evaporation rate can be relatively low, but its residual decay is slower, and the control module can record its slower release response and longer residual time in the release characteristic parameters. Thus, when performing compensation control, the control module can adopt different compensation strategies for different fragrance types or different fragrance groups.

[0084] In this embodiment, by identifying the fragrance information of the currently installed fragrance box, fragrance cavity, or fragrance medium and reading the corresponding release characteristic parameters, the system can take into account the differences in volatilization, diffusion, residue, perception, and aging of different fragrance materials when generating compensation control quantities, thereby reducing the release deviation caused by the same control command on different fragrances.

[0085] In one embodiment, generating a compensation control quantity for the corresponding fragrance type based on the release deviation, the release characteristic parameters, and the current vehicle environment information includes:

[0086] Using any fragrance type as the target fragrance type, when the release characteristic parameters of the target fragrance type indicate that the volatilization rate of the target fragrance type is higher than the baseline release rate corresponding to the target release stage, the release intensity of the target fragrance type in the current control cycle is reduced or the release duration is shortened.

[0087] When the release characteristic parameters of the target aroma indicate that the evaporation rate of the target aroma is lower than the baseline release rate, the release intensity of the target aroma in the current control cycle is increased, the release duration is extended, or the release is initiated earlier.

[0088] Specifically, different fragrance materials can have different volatilization rates, diffusion rates, residual intensity, and perception thresholds. For example, some fragrances used to form the initial aroma characteristics volatilize faster and their concentration rises more quickly; while some fragrances used to form the persistent aroma base volatilize slower, their concentration rises more slowly, but their residual time is longer. If a fixed release time, fixed damper opening, or fixed fan speed is used for all fragrances, the faster-evaporating fragrances may have excessively high concentrations in a short period of time, while the slower-evaporating fragrances may fail to achieve the expected aroma state within the target stage, thus affecting the tracking effect of the target aroma profile.

[0089] In one embodiment, the control module can determine the target release amount of each fragrance type in the current target release phase based on the target fragrance note curve selected by the user, and generate a compensation control quantity for the target fragrance type by combining the release characteristic parameters of the target fragrance type, the remaining amount of fragrance, the historical opening time, the channel air volume, and the ambient temperature. The compensation control quantity can be used to correct the release intensity, release duration, release start time, or release interval of the target fragrance type in the current control cycle.

[0090] In one embodiment, for a target fragrance with an evaporation rate higher than a baseline release rate, the control module can reduce its release intensity, shorten its release duration, reduce the damper opening, reduce the fan speed, or reduce the micro-pump operating time to reduce the rapid increase in fragrance concentration. For a target fragrance with an evaporation rate lower than a baseline release rate, the control module can increase its release intensity, extend its release duration, increase the damper opening, increase the fan speed, extend the micro-pump operating time, or pre-release it earlier to reduce the possibility of insufficient release of the target fragrance during the target release phase.

[0091] In another embodiment, the control module can also adjust the compensation control amount according to the residual decay characteristics of the target aroma. For example, when the residual time of the target aroma is long, the control module can reduce the release intensity or increase the purge time in advance before the end of the target release stage or before the stage switch, so as to reduce the interference of the target aroma on the subsequent aroma stages; when the residual decay of the target aroma is fast, the control module can maintain a certain release intensity or delay the reduction of the release intensity before the stage switch, so as to reduce the aroma transition gap.

[0092] Furthermore, compensation control can be executed individually for each fragrance type or separately for each fragrance group. For example, the first, second, and third fragrance types can each correspond to different release characteristic parameters and compensation control values, with the control module controlling the corresponding fragrance release unit respectively; alternatively, the system can divide multiple similar fragrance types into a first fragrance group, a second fragrance group, and a third fragrance group, and perform compensation control on each fragrance group separately. In this way, the system can adapt to both the release differences of a single fragrance type and the overall aroma hierarchy formed by the combination of multiple fragrance types.

[0093] In this embodiment, by modifying the compensation control amount according to the release characteristic parameters of the target fragrance, the concentration fluctuation caused by the difference in evaporation rate of different fragrances can be reduced, the problems of some fragrances being too strong, some fragrances being indistinct, or the connection gap between multiple fragrances can be reduced, and the same fragrance combination can have a more stable release performance under different fragrance medium conditions.

[0094] In one embodiment, the current vehicle environment information includes at least one of the following: cabin temperature, fragrance box temperature, fragrance channel temperature, air conditioning outlet temperature, air conditioning airflow, window status, or number of occupants; the generation of the corresponding fragrance compensation control quantity includes:

[0095] The environmental correction amount is determined based on the current vehicle environment information, and the release intensity, release sequence, stage switching time, or purging duration of the corresponding fragrance are corrected using the environmental correction amount.

[0096] Specifically, the vehicle cabin temperature, fragrance box temperature, and fragrance channel temperature affect the evaporation rate and diffusion effect of the fragrance medium. Under high temperature conditions, the concentration of some fragrances increases rapidly and has a strong residue; under low temperature conditions, the release response of some fragrances is slower, and insufficient release may occur. The air conditioning outlet temperature and air conditioning airflow affect the diffusion path and diffusion speed of the fragrance after it enters the cabin from the fragrance processing chamber, fragrance channel, or air outlet. The window status and the number of occupants affect the airflow organization and fragrance dilution degree in the cabin. Therefore, when generating compensation control quantities, the control module can use the above information as a basis for environmental correction.

[0097] In one embodiment, after the user selects the fragrance combination, the control module reads the current cabin temperature, fragrance box temperature, or air conditioning duct temperature, and determines whether the read temperature is within the normal temperature calibration range. If the temperature exceeds the normal temperature calibration range, the control module can determine the environmental correction amount based on a temperature correction table, a temperature function, or a composite correction rule. The temperature correction table can pre-store the release correction relationships corresponding to different temperature ranges; the temperature function can calculate the release correction value based on the degree to which the temperature deviates from the normal temperature calibration range; the composite correction rule can simultaneously combine temperature information and fragrance release characteristic parameters to determine the environmental correction amount.

[0098] Under high-temperature conditions, the control module can reduce the release intensity and shorten the release time of highly volatile fragrances, and appropriately extend the purging time before stage switching to reduce the possibility of excessive fragrance concentration or residue interfering with subsequent release stages. Under low-temperature conditions, the control module can extend the release time of low-volatile fragrances, increase the fan speed, or start pre-release earlier to reduce insufficient fragrance release or delayed response. When the temperature changes rapidly, the control module can shorten the control cycle and increase the frequency of fragrance concentration detection or parameter updates, enabling the compensation control quantity to respond more quickly to changes in the vehicle environment.

[0099] In another embodiment, the environmental correction amount can also be determined based on the air conditioning airflow, window status, or number of occupants. For example, when the air conditioning airflow is high, the diffusion speed of the fragrance in the cabin may increase, and the control module can appropriately reduce the release intensity or shorten the release time; when the windows are open, the fragrance may dissipate faster, and the control module can increase the release intensity or shorten the control cycle based on the current fragrance status information and release deviation; when the number of occupants increases, the control module can adjust the release sequence or release intensity based on the distribution of the target area in the cabin, so that the fragrance status in the target area is closer to the target fragrance profile.

[0100] In one embodiment, the current vehicle environment information can come from the vehicle's existing air conditioning sensors, or from the temperature sensor built into the fragrance box, the fragrance channel temperature sensor, the cabin temperature sensor, the outside temperature sensor, the sunlight sensor, or the window status detection signal. If there is no direct temperature sensor, the control module can also determine the temperature status of the fragrance box or cabin based on the air conditioning set temperature, the outside temperature, the sunlight sensor signal, and the vehicle's parking time, and determine the environmental correction amount based on the temperature status.

[0101] Furthermore, environmental correction can be performed on a single fragrance type, or separately on the first, second, and third fragrance groups. For example, the first fragrance group can correspond to fragrances with higher volatility, making them more sensitive to temperature increases; the third fragrance group can correspond to fragrances with lower volatility, making them more sensitive to insufficient release at low temperatures. The control module can set different temperature sensitivity relationships for different fragrance types or different fragrance groups, and determine the environmental correction amount for each.

[0102] In this embodiment, by determining the environmental correction amount based on current vehicle environmental information such as cabin temperature, fragrance box temperature, fragrance channel temperature, air conditioning outlet temperature, air conditioning air volume, window status, or number of occupants, and using the environmental correction amount to correct the release intensity, release sequence, stage switching time, or purging duration, the problems of excessive fragrance at high temperatures, insufficient fragrance at low temperatures, and stage switching deviations under different air conditioning conditions can be reduced, so that the same fragrance combination has a more stable release performance in different vehicle environments.

[0103] Furthermore, in one embodiment, generating a compensation control quantity for the corresponding fragrance type based on the release deviation, the release characteristic parameters, and the current vehicle environment information includes:

[0104] When the release deviation indicates that the current fragrance state of the corresponding fragrance type is lower than the target release state corresponding to the current control cycle in the target fragrance curve, and the release deviation is greater than the first threshold, a compensation control quantity is generated to increase the release intensity of the corresponding fragrance type.

[0105] When the release deviation indicates that the current fragrance state of the corresponding fragrance is higher than the target release state, and the release deviation is greater than the second threshold, a compensation control quantity is generated to reduce the release intensity of the corresponding fragrance or to perform purging.

[0106] Specifically, the first threshold and the second threshold can be determined based on the fragrance type, target release stage, release characteristic parameters, or current vehicle environmental information. The first threshold is used to determine whether the deviation of the current fragrance state from the target release state needs to be compensated by enhancing release; the second threshold is used to determine whether the deviation of the current fragrance state from the target release state needs to be corrected by reducing release or purging. The first threshold and the second threshold can be the same or different. For example, for fragrances that evaporate quickly and have strong residue, the second threshold can be set smaller, causing the system to trigger reducing release intensity or purging earlier; for fragrances that evaporate slowly, the first threshold can be set smaller, causing the system to trigger enhancing release earlier.

[0107] In one embodiment, when the current fragrance state of the corresponding fragrance is lower than the target release state and the release deviation is greater than a first threshold, the control module can increase the damper opening of the corresponding fragrance, increase the fan speed, extend the release time, shorten the release interval, or increase the micro-pump operating parameters to increase the release intensity of the corresponding fragrance in the current control cycle or subsequent control cycles. When the current fragrance state of the corresponding fragrance is higher than the target release state and the release deviation is greater than a second threshold, the control module can decrease the damper opening of the corresponding fragrance, decrease the fan speed, shorten the release time, extend the release interval, decrease the micro-pump operating parameters, or control the fan, damper, or channel to perform short-term purging to reduce the high concentration of the corresponding fragrance in the vehicle or fragrance channel.

[0108] Furthermore, the control module can use release deviation, release characteristic parameters, and current vehicle environmental information to determine the compensation control quantity. For example, in high-temperature conditions or when the air conditioning airflow is low, if the release deviation indicates that the current fragrance state is higher than the target release state, the control module can prioritize reducing the release intensity and extending the purging time. In low-temperature conditions or when the air conditioning airflow is high, if the release deviation indicates that the current fragrance state is lower than the target release state, the control module can prioritize increasing the release intensity, extending the release time, or starting the release earlier. Thus, the compensation control quantity not only reflects the current deviation direction and magnitude but also adapts to different fragrance release characteristics and changes in the vehicle environment.

[0109] In this embodiment, by constraining the triggering conditions for enhanced release and reduced release or purging by using the first threshold and the second threshold respectively, the system can avoid frequent adjustments to slight fluctuations, and at the same time, timely compensation control can be performed when the deviation is large, thereby reducing the problems of over-inflation, under-inflation or unstable phase switching of fragrance concentration.

[0110] Furthermore, in one embodiment, the method further includes:

[0111] Based on the release deviation within multiple consecutive control cycles, the compensation control quantity is corrected, and the corrected compensation control quantity is associated with the corresponding fragrance type, release characteristic parameters, and current vehicle environment information and recorded as calibration data.

[0112] When similar or identical fragrance combination information and vehicle environment information are subsequently obtained, an initial compensation control value for the corresponding fragrance type is generated based on the calibration data.

[0113] Specifically, the control module can record the release deviation, compensation control amount, release characteristic parameters, and current vehicle environment information for the corresponding fragrance type within multiple consecutive control cycles. When the same fragrance type consistently exceeds or falls below the target release state across multiple consecutive control cycles, it indicates a systematic deviation between the currently used release characteristic parameters or compensation control amount and the actual release state. In this case, the control module can correct the compensation control amount based on the release deviation across multiple consecutive control cycles. For example, if the same fragrance type is below the target release state across multiple consecutive control cycles, the control module can increase the compensation control amount in subsequent control cycles; if the same fragrance type is above the target release state across multiple consecutive control cycles, the control module can decrease the compensation control amount in subsequent control cycles or increase the purging-related control amount.

[0114] In one embodiment, calibration data may include fragrance type information, fragrance combination information, release characteristic parameters, vehicle environment information, target release stage, compensation control quantity before correction, compensation control quantity after correction, and corresponding release deviation changes. Vehicle environment information may include at least one of the following: cabin temperature, fragrance box temperature, fragrance channel temperature, air conditioning outlet temperature, air conditioning airflow, window status, or number of occupants. By associating and recording the corrected compensation control quantity with the above information, the control module can generate calibration data for the corresponding fragrance type, corresponding environmental conditions, and corresponding fragrance combination.

[0115] Furthermore, upon obtaining similar or identical fragrance combination information and vehicle environment information, the control module can call the calibration data to generate an initial compensation control value for the corresponding fragrance. Similar or identical fragrance combination information can include multiple identical fragrances, the same release stage, or similar target fragrance curves; similar or identical vehicle environment information can include cabin temperature, air conditioning airflow, window status, or the number of occupants being in the same or adjacent ranges. The control module can use the corrected compensation control value from the calibration data as the initial compensation control value, or further adjust it based on the corrected compensation control value combined with the current release deviation and current vehicle environment information.

[0116] In this embodiment, by recording the correction results within multiple consecutive control cycles as calibration data and using them to generate the initial compensation control quantity in subsequent identical or similar scenarios, the deviation adjustment time at the beginning of each release can be reduced, allowing the system to enter a more stable compensation control state more quickly when the fragrance box ages, the fragrance volatilizes differently, or the vehicle environment repeats itself.

[0117] In one embodiment, controlling multiple fragrance release units to release fragrance in stages according to the compensation control amount includes:

[0118] The compensation control quantity is converted into at least one of the following: damper opening, fan speed, release duration, release interval, micropump operating parameters, or purging parameters of the corresponding fragrance release unit.

[0119] And when the release deviation of the same fragrance type meets the preset update conditions within multiple consecutive control cycles, the release characteristic parameters or compensation control quantities corresponding to the same fragrance type are updated based on the release deviation.

[0120] Specifically, the compensation control quantity can be an intermediate control quantity calculated by the control module based on the release deviation, release characteristic parameters, and current vehicle environmental information. Since different fragrance release units may have different execution structures, the control module can convert the compensation control quantity into corresponding executable control parameters according to the structure type of the fragrance release unit. For example, for a fragrance release unit that controls the opening of the release channel via an electronic damper, the control module can convert the compensation control quantity into damper opening; for a fragrance release unit that uses a fan to drive airflow, the control module can convert the compensation control quantity into fan speed or fan duty cycle; for a fragrance release unit that uses a micropump to deliver liquid fragrance, the control module can convert the compensation control quantity into micropump start / stop status, micropump operating frequency, micropump operating duration, or micropump output; for release stages where the influence of residual fragrance needs to be reduced, the control module can convert the compensation control quantity into purging duration, purging airflow, or purging interval.

[0121] In one embodiment, multiple fragrance release units can correspond to a first fragrance type, a second fragrance type, and a third fragrance type, respectively. The control module can send release control quantities to the corresponding fragrance release units according to multiple target release stages corresponding to the target fragrance curve, causing the first, second, and third fragrance types to be released sequentially, partially overlapping, or released together according to a preset ratio. For example, the first fragrance type rapidly forms the initial aroma characteristics with a high release intensity in the early stages of release; the second fragrance type gradually intensifies after the first fragrance type has been released for a period of time to form the main aroma characteristics; and the third fragrance type is released in subsequent stages to form a sustained aroma base. The control module can dynamically change the damper opening, fan speed, micropump operating parameters, or release duration of the corresponding fragrance release unit according to the compensation control quantity within each stage.

[0122] In another embodiment, the fragrance release unit can be connected to the fragrance processing chamber. Fragrances released by multiple fragrance release units can enter the fragrance processing chamber, where they are mixed or transported by a fan or airflow channel before entering the vehicle interior through an air outlet. When the target fragrance profile requires multiple fragrance types to partially overlap, the control module can control multiple fragrance release units to release within the same or adjacent control cycles, and output a combined fragrance through the fragrance processing chamber. When the target fragrance profile requires a phase transition, the control module can reduce the release intensity of the previous fragrance type while increasing the release intensity of the next fragrance type, and perform purging as needed to reduce the impact of the previous fragrance type's residue on the next stage's fragrance.

[0123] Furthermore, the preset update conditions may include: the release deviation of the same fragrance type exceeding a preset deviation threshold in multiple consecutive control cycles; the release deviation direction being continuously the same; the compensation control quantity continuously reaching its upper or lower limit; or the current fragrance state failing to follow the target release state in the target fragrance note curve for an extended period. When the preset update conditions are met, the control module may consider that the current release characteristic parameter or compensation control quantity does not match the actual release state, and update the release characteristic parameter or compensation control quantity corresponding to the same fragrance type based on the release deviation.

[0124] In one embodiment, if the same fragrance is below the target release state for multiple consecutive control cycles, the control module can increase the release characteristic parameters related to release compensation for the corresponding fragrance, or increase the subsequently generated compensation control value. If the same fragrance is above the target release state for multiple consecutive control cycles, the control module can decrease the compensation control value for the corresponding fragrance, or adjust the release characteristic parameters related to residual decay or volatilization response. The updated release characteristic parameters or compensation control values ​​can be stored in local memory and used for initial control in subsequent control cycles or in subsequent similar scenarios.

[0125] In one embodiment, the actual fragrance release effect corresponding to the same release control value may change when the remaining amount in the fragrance box decreases, the cumulative opening time increases, or the material aging condition changes. The control module can identify these changes by the release deviation within a continuous control cycle and update the release characteristic parameters or compensation control values. For example, in the later stages of fragrance box use, if the system detects that a certain fragrance is continuously below the target release state, it can increase the damper opening, fan speed, or micro-pump operating parameters of the corresponding fragrance release unit, or update the release characteristic parameters of the corresponding fragrance, so that subsequent compensation control is more consistent with the current state of the fragrance box.

[0126] In this embodiment, by converting the compensation control quantity into damper opening, fan speed, release duration, release interval, micropump operating parameters, or purging parameters, the compensation control result can be implemented in the actual execution process of the fragrance release unit. At the same time, by updating the release characteristic parameters or compensation control quantity according to the release deviation in multiple consecutive control cycles, the system can adapt to long-term deviations caused by fragrance medium consumption, material aging, release channel residue, and changes in the vehicle environment, thereby improving the stability of multi-fragrance phased release.

[0127] The steps of the various methods described above are only for clarity. In practice, they can be combined into one step or some steps can be split into multiple steps. As long as they include the same logical relationship, they are all within the scope of protection of this application. Adding insignificant modifications or introducing insignificant designs to the algorithm or process, but without changing the core design of the algorithm and process, are also within the scope of protection of this application.

[0128] In one embodiment, such as Figure 2 As shown, this application also provides an in-vehicle fragrance control system. The in-vehicle fragrance control system includes a control module 1, a detection module 2, and multiple fragrance release units 3. The detection module 2 is used to acquire current fragrance status information; the multiple fragrance release units 3 are used to release multiple fragrances; the control module 1 is connected to the detection module and the multiple fragrance release units 3 respectively, and the control module 1 is used to implement the in-vehicle fragrance control method in any of the above embodiments.

[0129] Specifically, the control module can be a standalone fragrance controller or integrated into the air conditioning control module, vehicle infotainment controller, or cabin domain controller. The control module may include a processor, memory, communication interface, and driver interface. The memory can store fragrance combination information, manufacturer-preset fragrance combinations, release curves for multiple fragrances, release characteristic parameters, vehicle environment correction rules, calibration data, and control programs for executing the in-vehicle fragrance control method. The communication interface can be used to receive fragrance combination information input by the user through the in-vehicle display interface, vehicle infotainment application, or cabin control entry point, and can also be used to obtain current vehicle environment information from the vehicle air conditioning system, cabin sensors, window controllers, or cloud services. The driver interface can be used to output release control values ​​to multiple fragrance release units.

[0130] In one embodiment, the control module can generate a target fragrance profile based on user-selected fragrance combination information or pre-defined fragrance combinations by the manufacturer. The manufacturer's pre-defined fragrance combinations may include the combination relationships of multiple fragrances and their respective release curves, used to create a fresh, soothing, invigorating, or other preset fragrance effects. The control module can map multiple fragrances onto a timeline, allowing them to be released sequentially, overlappingly, or gradually to form a combined fragrance. Multiple fragrances can also be configured to respectively form the top, middle, and base notes of the target fragrance, enabling the vehicle to develop initial fragrance characteristics at the beginning of release, the main fragrance characteristics in the middle stage, and a sustained fragrance base in the later stages.

[0131] In one embodiment, the detection module may include an odor sensor, a VOC sensor, an electronic nose module, or other fragrance concentration detectors. The detection module can be positioned in the target area of ​​the cabin, the fragrance channel, the air vent, the fragrance processing chamber, or the return air path to acquire current fragrance status information. When the detection module is positioned in the fragrance channel or fragrance processing chamber, it can reflect the fragrance status after the fragrance release unit outputs; when the detection module is positioned in the air vent, it can reflect the output status of the fragrance before it enters the cabin; when the detection module is positioned in the target area of ​​the cabin or the return air path, it can reflect the fragrance status in the occupant perception area or after mixing within the cabin.

[0132] Furthermore, when the detection module cannot distinguish specific fragrance types, the control module can determine the current fragrance status information corresponding to each fragrance type by combining historical release amounts, fragrance evaporation parameters, and total VOC detection values. Historical release amounts may include the release duration, release intensity, damper opening, fan speed, micropump operating parameters, or release frequency of each fragrance type within a historical control period. The control module can determine the contribution relationship of each fragrance type to the current total VOC detection value based on historical release amounts, fragrance evaporation parameters, and total VOC detection values, thereby obtaining the fragrance concentration estimate for each fragrance type, and performing deviation correction based on the fragrance concentration estimate.

[0133] In one embodiment, multiple fragrance release units can each correspond to a different fragrance type. Each fragrance release unit may include a fragrance box, a fragrance cavity, a fragrance medium, an electronic damper, a fan, a valve, a micropump, a heating element, a release channel, or a combination thereof. The multiple fragrance release units can respectively contain a first fragrance type, a second fragrance type, and a third fragrance type, which can be released sequentially, partially overlapping, or proportionally according to a target fragrance profile. The fragrance medium can be a liquid fragrance medium or a solid fragrance medium; when a solid fragrance medium is used, the fragrance release unit can control the release of the solid fragrance medium through a heating element.

[0134] In one embodiment, multiple fragrance release units can be arranged in a multi-level layered fragrance device. The multi-level layered fragrance device can include multiple independent fragrance chambers, each with a built-in independent fragrance storage box. Different fragrance chambers can hold different fragrances. Each fragrance chamber can be equipped with micro-vents, electrically controlled valves, electronic dampers, or micro-pumps to control the release of the corresponding fragrance. The multiple fragrance chambers can have a three-layer structure, or a special fragrance layer can be added to the three-layer structure to store a customized fragrance and control its release via an independent solenoid valve.

[0135] Furthermore, the in-vehicle fragrance control system may also include a fragrance processing chamber. The fragrance processing chamber can be located below the multi-level layered fragrance device and connected to multiple fragrance release units. A fan or airflow guiding structure can be installed within the fragrance processing chamber to mix, transport, or purge the fragrances released by the multiple fragrance release units according to the target fragrance profile and compensation control amount, before discharging them into the vehicle interior through air outlets. When multiple fragrances are released in overlapping phases, the fragrance processing chamber can output a combined fragrance; when switching release stages, the control module can control the fan or valves to perform purging to reduce the impact of residual fragrance from the previous stage on the fragrance of the next stage.

[0136] In one embodiment, the control module can identify the fragrance information of the currently installed fragrance box, fragrance chamber, or fragrance medium, and read the corresponding release characteristic parameters based on the fragrance information. Fragrance information can be obtained through resistive identification, RFID, NFC, QR code, EEPROM, or manual user input. Release characteristic parameters can be written during factory calibration, cloud-based delivery, vehicle local learning, or after-sales fragrance box replacement, and are used to characterize the evaporation rate, diffusion rate, residual decay, sensing threshold, remaining fragrance amount, cumulative activation time, or material aging status of the corresponding fragrance.

[0137] In one embodiment, the control module can generate a compensation control quantity based on the release deviation, release characteristic parameters, and current vehicle environment information, and convert the compensation control quantity into a release control quantity executable by the fragrance release unit. The release control quantity may include damper opening, fan speed, release duration, release interval, micropump operating parameters, or purging parameters. For fragrances with a high evaporation rate, the control module can shorten the release duration, reduce the damper opening, or reduce the fan speed; for fragrances with a low evaporation rate, the control module can extend the release duration, increase the damper opening, increase the fan speed, or pre-release earlier.

[0138] In one embodiment, the control module can also determine environmental correction amounts based on current vehicle environmental information. This information may include at least one of the following: cabin temperature, fragrance box temperature, fragrance channel temperature, air conditioning outlet temperature, air conditioning airflow, window status, or number of occupants. Under high-temperature conditions, the control module can reduce the release intensity and shorten the release time of highly volatile fragrances, and appropriately extend the purging time before stage switching; under low-temperature conditions, the control module can extend the release time of low-volatile fragrances, increase the fan speed, or initiate pre-release earlier. Therefore, the system can reduce the problems of excessive fragrance at high temperatures, insufficient fragrance at low temperatures, and stage switching deviations under different air conditioning conditions.

[0139] In one embodiment, the control module can also correct the compensation control amount based on the release deviation within multiple consecutive control cycles, and record the corrected compensation control amount as calibration data, associated with the corresponding fragrance type, release characteristic parameters, and current vehicle environment information. When similar or identical fragrance combinations and vehicle environment information are subsequently obtained, the control module can generate an initial compensation control amount for the corresponding fragrance type based on the calibration data, enabling the system to enter a stable compensation control state more quickly in similar scenarios.

[0140] In one embodiment, multiple fragrance release units can be disposed in a multi-level layered fragrance device. The multi-level layered fragrance device includes multiple independent fragrance cavities distributed along the height direction or along the airflow direction. Each independent fragrance cavity is isolated from each other and is used to contain fragrance media of different fragrance types. Each independent fragrance cavity can be provided with an independent fragrance storage box for storing liquid fragrance, solid fragrance, or other fragrance media that can release fragrance of the corresponding fragrance type. Each independent fragrance cavity can also be provided with micro-vents and electrically controlled valves. The micro-vents allow the corresponding fragrance to enter the subsequent airflow channel, and the electrically controlled valves open or close the release path between the corresponding independent fragrance cavity and the fragrance processing cavity under the control of the control module.

[0141] In one specific embodiment, the multi-level layered fragrance device includes three independent fragrance chambers, which can respectively correspond to a first fragrance type, a second fragrance type, and a third fragrance type. The first, second, and third fragrance types can be used to form the top, middle, and base notes of the target fragrance combination, respectively. The control module can control the electronically controlled valves, micro-pumps, electronic dampers, or other release actuators corresponding to the three independent fragrance chambers according to the target fragrance profile, so that the first, second, and third fragrance types are released sequentially, partially overlapping, or proportionally together according to a preset start release time, duration of release, and target release intensity.

[0142] Furthermore, the in-vehicle multi-fragrance control system may also include a fragrance processing chamber, which is connected to micro-vents of multiple independent fragrance chambers. A fan, an airflow guiding structure, or a fragrance mixing channel may be installed within the fragrance processing chamber. The fan drives the fragrance airflow from different independent fragrance chambers, and the airflow guiding structure or fragrance mixing channel guides the mixing or phased delivery of different fragrances within the fragrance processing chamber. The fragrance processing chamber may also have an air outlet, which is connected to the vehicle cabin, air conditioning duct, or independent fragrance channel to output the processed fragrance into the vehicle interior space.

[0143] In this embodiment, the control module acquires the current fragrance status information through the detection module, and determines the compensation control amount by combining the target fragrance profile, release characteristic parameters, and current vehicle environment information. It then controls multiple fragrance release units to release fragrance in stages, allowing the actual fragrance state inside the vehicle to change over time and follow the target fragrance profile. This system structure supports independent storage of multiple fragrances, staged release, concentration feedback, volatility characteristic compensation, environmental correction, and calibration data reuse, thereby improving the stability and layering of the in-vehicle fragrance release.

[0144] In one embodiment, this application also provides a vehicle. The vehicle includes the in-vehicle fragrance control system described in any of the above embodiments. The vehicle can be a passenger car, a commercial vehicle, a smart cockpit vehicle, or other motor vehicle with a cabin space.

[0145] Specifically, the in-vehicle fragrance control system can be installed in the vehicle's cabin, dashboard, center console, central tunnel, near the air conditioning ducts, or other suitable locations within the vehicle. The control module can connect to the vehicle's infotainment system, air conditioning control module, cabin domain controller, window control module, cabin sensors, or vehicle communication bus to obtain information such as the user-selected fragrance combination, current vehicle environmental information, and vehicle operating status. The vehicle communication bus can include CAN bus, LIN bus, Ethernet, or other in-vehicle communication links.

[0146] In one embodiment, multiple fragrance release units can be connected to the vehicle's air conditioning ducts, independent fragrance channels, or cabin air vents. The fragrance released by the fragrance release units can be delivered to the vehicle interior space via a fragrance processing chamber, fragrance channel, or vehicle air conditioning ducts. A detection module can be installed in a target area of ​​the cabin, fragrance channel, air vent, fragrance processing chamber, or return air path to detect the fragrance concentration or fragrance status under actual vehicle usage conditions.

[0147] In one embodiment, the vehicle can provide users with a fragrance combination selection function through an in-vehicle display screen, vehicle application, voice entry, cockpit quick control entry, or mobile terminal. Users can select manufacturer-preset fragrance combinations, or select multiple fragrances and configure the release order, release duration, or release intensity. The control module generates a target fragrance curve based on the user selection or manufacturer-preset information and controls multiple fragrance release units to release fragrances in stages within the vehicle cabin.

[0148] In one embodiment, the vehicle can activate different fragrance combinations based on different driving scenarios. For example, in commuting scenarios, the vehicle can activate a refreshing fragrance combination; in long-distance driving scenarios, the vehicle can activate an invigorating fragrance combination; and in rest scenarios, the vehicle can activate a soothing fragrance combination. Each fragrance combination can include multiple fragrance types and their corresponding release curves, allowing the vehicle to create different levels of combined fragrance in the initial, middle, and later stages of fragrance release.

[0149] Furthermore, during vehicle operation, the control module can provide information such as cabin temperature, air conditioning outlet temperature, air conditioning airflow, window status, number of occupants, or outside temperature as current vehicle environmental information. The control module can then determine environmental correction parameters based on this information and adjust the fragrance release intensity, release sequence, stage switching time, or purging duration. For example, when the vehicle is started after being exposed to high temperatures, the control module can reduce the release intensity of highly volatile fragrances; when the vehicle is in a low-temperature environment or during rapid air conditioning cooling / heating, the control module can extend the release time of low-volatile fragrances or initiate pre-release earlier.

[0150] In one embodiment, the vehicle can also record calibration data under different vehicle environments. The calibration data may include fragrance information, target fragrance profile, release characteristic parameters, vehicle environment information, corrected compensation control values, and release deviation changes. When the vehicle subsequently enters the same or similar usage scenarios, the control module can call the calibration data to generate initial compensation control values, thereby reducing the deviation adjustment time during the initial release of the fragrance.

[0151] In this embodiment, by setting up an in-vehicle fragrance control system, the vehicle can release multiple fragrances in stages under different vehicle operating conditions and cabin environments, so that the actual fragrance state inside the vehicle changes over time and follows the target fragrance profile. Therefore, the vehicle can create a layered fragrance combination in different scenarios such as commuting, driving, and resting, and reduce the impact of temperature, air conditioning airflow, window status, number of occupants, or aging of the fragrance medium on the stability of fragrance release.

[0152] The computer program product provided in this application includes one or more computer programs / instructions. When executed by a processor, these computer programs / instructions generate, in whole or in part, the processes or functions described in this application. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive), etc.

[0153] The flowcharts or block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of devices, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-specific system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0154] The scope of this application is defined by the appended claims rather than the foregoing description, and is therefore intended to encompass all variations falling within the meaning and scope of equivalents of the claims. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it is clear that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural.

[0155] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily made by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims, and the above embodiments should be regarded as exemplary and non-limiting.

Claims

1. A method for controlling in-vehicle fragrance, characterized in that, The method includes: Obtain the fragrance combination information selected by the user, and generate a target fragrance curve based on the fragrance combination information. The target fragrance curve is used to characterize the target release state of multiple fragrances on the time axis. Obtain the release characteristic parameters of each fragrance type involved in the release, the current vehicle environment information, and the current fragrance status information within the current control cycle; Based on the target fragrance profile and the current fragrance status information, determine the release deviation of each fragrance type within the current control period; Based on the release deviation, the release characteristic parameters, and the current vehicle environment information, a compensation control quantity for the corresponding fragrance type is generated; The compensation control amount controls multiple fragrance release units to release fragrance in stages, so that the actual fragrance state in the vehicle changes over time and follows the target fragrance curve.

2. The in-vehicle fragrance control method according to claim 1, characterized in that, The fragrance combination information includes a first fragrance type, a second fragrance type, and a third fragrance type; the step of generating a target fragrance profile based on the fragrance combination information includes: The starting release time, continuous release duration, target concentration change trend, and stage switching conditions for the first fragrance type, the second fragrance type, and the third fragrance type are determined respectively. Based on the starting release time, the continuous release duration, the target concentration change trend, and the stage switching conditions, target fragrance curves that are connected or partially overlapped on the time axis for each fragrance type are generated.

3. The in-vehicle fragrance control method according to claim 1, characterized in that, The process of obtaining the current fragrance status information includes: Fragrance concentration detection values ​​are obtained by detection modules set in the target area of ​​the cabin, fragrance channel, air outlet, fragrance processing chamber or return air path, and the current fragrance status information of the corresponding fragrance type in the current control cycle is determined based on the fragrance concentration detection values.

4. The in-vehicle fragrance control method according to claim 1, characterized in that, The process of obtaining the release characteristic parameters corresponding to each aroma type participating in the release within the current control cycle includes: Identify the fragrance type information of the currently installed fragrance box, fragrance chamber, or fragrance medium, and read the corresponding calibrated release characteristic parameters based on the fragrance type information; The release characteristic parameters are used to characterize at least one of the following: evaporation rate, diffusion rate, residual decay, perception threshold, remaining fragrance amount, cumulative opening time, or material aging state of the corresponding fragrance.

5. The in-vehicle fragrance control method according to claim 1, characterized in that, The step of generating a compensation control quantity for the corresponding fragrance type based on the release deviation, the release characteristic parameters, and the current vehicle environment information includes: Using any fragrance type as the target fragrance type, when the release characteristic parameters of the target fragrance type indicate that the volatilization rate of the target fragrance type is higher than the baseline release rate corresponding to the target release stage, the release intensity of the target fragrance type in the current control cycle is reduced or the release duration is shortened. When the release characteristic parameters of the target aroma indicate that the evaporation rate of the target aroma is lower than the baseline release rate, the release intensity of the target aroma in the current control cycle is increased, the release duration is extended, or the release is initiated earlier.

6. The in-vehicle fragrance control method according to claim 1, characterized in that, The current vehicle environment information includes at least one of the following: cabin temperature, fragrance box temperature, fragrance channel temperature, air conditioning outlet temperature, air conditioning airflow, window status, or number of occupants; the compensation control quantity for generating the corresponding fragrance includes: The environmental correction amount is determined based on the current vehicle environment information, and the release intensity, release sequence, stage switching time, or purging duration of the corresponding fragrance are corrected using the environmental correction amount.

7. The in-vehicle fragrance control method according to claim 1, characterized in that, The step of controlling multiple fragrance release units to release fragrance in stages according to the compensation control amount includes: The compensation control quantity is converted into at least one of the following: damper opening, fan speed, release duration, release interval, micropump operating parameters, or purging parameters of the corresponding fragrance release unit. And when the release deviation of the same fragrance type meets the preset update conditions within multiple consecutive control cycles, the release characteristic parameters or compensation control quantities corresponding to the same fragrance type are updated based on the release deviation.

8. A vehicle-mounted fragrance control system, characterized in that, It includes a control module, a detection module, and multiple fragrance release units; The detection module is used to obtain the current fragrance status information; The multiple fragrance release units are used to release multiple fragrances; The control module is connected to the detection module and the plurality of fragrance release units respectively, and the control module is used to implement the vehicle fragrance control method according to any one of claims 1 to 7.

9. A vehicle, characterized in that, Including the in-vehicle fragrance control system as described in claim 8.

10. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the method according to any one of claims 1 to 7.

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