Vehicle-mounted fragrance allowance detection method and vehicle-mounted fragrance system

Abstract

The invention relates to the technical field of vehicle-mounted fragrance, in particular to a vehicle-mounted fragrance allowance detection method and a vehicle-mounted fragrance system. The vehicle-mounted fragrance allowance detection method comprises the following steps: collecting the content V0 of initial fragrance in a fragrance bottle; acquiring a rotating speed factor fn of the air blower; the working duration delta t of the air blower is collected; an environment temperature factor gT at the air blower is collected; collecting the volatilization rate K of the fragrance; data processing is carried out on the rotating speed factor fn of the air blower, the working time length delta t of the air blower, the environment temperature factor gT and the volatilization rate K of the fragrance, and the consumption delta V of the fragrance in the fragrance bottle in the delta t time period is calculated; and calculating the residual amount V of the fragrance in the fragrance bottle according to a formula V = V0-delta V. According to the vehicle-mounted fragrance remaining amount detection method, the fragrance remaining amount is detected by comprehensively considering four-dimensional parameters of the rotating speed factor fn of the air blower, the working duration delta t of the air blower, the environment temperature factor gT and the volatilization rate K of the fragrance, the fragrance remaining amount detection accuracy is improved, the product reliability is improved, and the user experience feeling is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of in-vehicle aromatherapy, and particularly to a method for detecting the remaining amount of in-vehicle aromatherapy and an in-vehicle aromatherapy system. Background Art

[0002] With the improvement of the intelligent level of automobiles and the increasing requirements of users for the quality of the driving environment, intelligent in-vehicle aromatherapy systems have gradually become an important part of vehicle cockpit configurations. Such systems can achieve functions such as odor removal, air purification, fragrance type switching, and user mood regulation by integrating a fragrance diffusion device and an in-vehicle intelligent control module, further enhancing the user's comfort experience. Currently, mainstream intelligent in-vehicle aromatherapy systems usually are equipped with a human-machine interaction interface, supporting users to remotely control the start and stop of the aromatherapy machine, adjust the fragrance concentration, select multiple fragrance type schemes through the central control screen, and have the functions of visualizing the remaining amount of fragrance and warning of low remaining amount, significantly enhancing the convenience of use.

[0003] However, the remaining amount of fragrance detected by the existing fragrance remaining amount detection methods has a large deviation from the actual fragrance consumption, resulting in a decrease in the accuracy of the low remaining amount reminder function of the fragrance. Users often face the problems of "the remaining amount display is sufficient but the fragrance suddenly runs out" or "the low remaining amount warning is triggered too early", seriously affecting the product reliability and user experience.

[0004] Therefore, it is urgent to design a method for detecting the remaining amount of in-vehicle aromatherapy and an in-vehicle aromatherapy system to solve the above technical problems. Summary of the Invention

[0005] The first object of the present invention is to propose a method for detecting the remaining amount of in-vehicle aromatherapy, which can improve the accuracy of detecting the remaining amount of fragrance, improve the product reliability, and improve the user experience.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The present invention provides a method for detecting the remaining amount of in-vehicle aromatherapy, including:

[0008] Collecting the content V0 of the initial fragrance in the fragrance bottle;

[0009] Collecting the rotation speed factor fn of the blower;

[0010] Collecting the working duration Δt of the blower;

[0011] Collecting the ambient temperature factor gT at the blower;

[0012] Collecting the evaporation rate K of the fragrance;

[0013] Perform data processing on the rotational speed factor fn of the blower, the operating duration Δt of the blower, the ambient temperature factor gT, and the volatilization rate K of the fragrance, and calculate the consumption ΔV of the fragrance in the fragrance bottle within the Δt time period;

[0014] Calculate the remaining amount of fragrance in the fragrance bottle: V = V0 - ΔV.

[0015] As an alternative technical solution of a vehicle-mounted fragrance remaining amount detection method, the step of performing data processing on the rotational speed factor fn of the blower, the operating duration Δt of the blower, the ambient temperature factor gT, and the volatilization rate K of the fragrance, and calculating the consumption ΔV of the fragrance in the fragrance bottle within the Δt time period includes:

[0016]

[0017] Where:

[0018] Δt = t2 - t1;

[0019] K type is the fragrance type coefficient value, γ is the temperature sensitivity coefficient value, and T is the ambient temperature where the blower is located;

[0020] a, b, and c are all blower characteristic constants; n is the set rotational speed of the blower, Nmax is the theoretical maximum rotational speed of the blower, and n ∈ [0, Nmax];

[0021] gT = 1 + α(T - T0) + β(T - T0) 2 ; T is the ambient temperature where the blower is located, T0 is the reference temperature, α = 0.03, and β = 0.001.

[0022] As an alternative technical solution of a vehicle-mounted fragrance remaining amount detection method, the blower characteristic constants are a = 0.8, b = 1.2, and c = 0.2.

[0023] As an alternative technical solution of a vehicle-mounted fragrance remaining amount detection method, T0 = 25°C.

[0024] As an alternative technical solution of a vehicle-mounted fragrance remaining amount detection method, the fragrance type coefficient value K type corresponds one-to-one with the temperature sensitivity coefficient value γ;

[0025] The fragrance types include citrus, mint, floral, and woody;

[0026] For citrus fragrance, the fragrance type coefficient value K type = 1.2, and the temperature sensitivity coefficient value γ = 1.1;

[0027] For mint fragrance, the fragrance type coefficient value K type= 1, the temperature sensitivity coefficient value γ = 1;

[0028] The fragrance type coefficient value K of the floral fragrance type type = 0.8, the temperature sensitivity coefficient value γ = 0.9;

[0029] The fragrance type coefficient value K of the woody fragrance type type = 0.6, the temperature sensitivity coefficient value γ = 0.8.

[0030] As an alternative technical solution of a vehicle-mounted fragrance remaining amount detection method, the step of calculating the remaining amount V of the fragrance in the fragrance bottle as V = V0 - ΔV includes:

[0031] The remaining amount data of the fragrance in the fragrance bottle is updated every preset time and uploaded to the touch display screen for the user to view.

[0032] As an alternative technical solution of a vehicle-mounted fragrance remaining amount detection method, the preset time is set to 5 minutes to 20 minutes.

[0033] As an alternative technical solution of a vehicle-mounted fragrance remaining amount detection method, the fragrance in the fragrance bottle has multiple fragrance concentrations, and the fragrance concentrations include strong fragrance, medium fragrance, and light fragrance. The fragrance concentrations correspond one-to-one with the set rotation speed n of the blower. See the following reference cases;

[0034] When the fragrance concentration is strong fragrance, the set rotation speed n of the blower = 5000 rpm;

[0035] When the fragrance concentration is medium fragrance, the set rotation speed n of the blower = 4000 rpm;

[0036] When the fragrance concentration is light fragrance, the set rotation speed n of the blower = 3000 rpm.

[0037] The second object of the present invention is to propose a vehicle-mounted fragrance system, which can improve the accuracy of fragrance remaining amount detection, improve the reliability of the product, and improve the user experience.

[0038] To achieve this purpose, the present invention adopts the following technical solutions:

[0039] The present invention provides a vehicle-mounted fragrance system, which uses the vehicle-mounted fragrance remaining amount detection method described in any of the above alternative technical solutions to detect the remaining amount of the fragrance in the fragrance bottle. The vehicle-mounted fragrance system includes a housing, a fragrance bottle, a blower, and a temperature sensor;

[0040] The fragrance bottle and the blower are both arranged in the housing. The air duct of the blower is communicated with the channel of the fragrance bottle. The temperature sensor is arranged on the housing and is disposed directly opposite the blower.

[0041] As an alternative technical solution of a vehicle-mounted fragrance system, the vehicle-mounted fragrance system includes a touch display screen, a control main board and a wiring harness. The control main board is arranged in the housing. One end of the wiring harness is connected to the control main board, and the other end of the wiring harness is connected to the touch display screen.

[0042] An ID chip is arranged in the fragrance bottle. The ID chip is electrically connected to the control main board. The fragrance remaining amount data in the fragrance bottle can be transmitted to the control main board, and the control main board transmits the fragrance remaining amount data in the fragrance bottle to the touch display screen through the wiring harness.

[0043] The beneficial effects of the present invention at least include:

[0044] The present invention provides a method for detecting the remaining amount of vehicle-mounted fragrance. The method for detecting the remaining amount of vehicle-mounted fragrance includes the following steps: collecting the content V0 of the initial fragrance in the fragrance bottle; collecting the rotation speed factor fn of the blower; collecting the working duration Δt of the blower; collecting the ambient temperature factor gT at the blower; collecting the evaporation rate K of the fragrance; performing data processing on the rotation speed factor fn of the blower, the working duration Δt of the blower, the ambient temperature factor gT and the evaporation rate K of the fragrance, and calculating the consumption amount ΔV of the fragrance in the fragrance bottle during the Δt time period; calculating the remaining amount V of the fragrance in the fragrance bottle, where V = V0 - ΔV.

[0045] In the prior art, the calculation of the remaining amount of fragrance mainly depends on the linear relationship model between the blower rotation speed parameter and the cumulative working duration of the fragrance machine, and fails to fully consider the dynamic influence of the ambient temperature on the evaporation characteristics of the essential oil (fragrance). Since the evaporation rate of the essential oil has a significant positive correlation with the ambient temperature, that is, an increase in the ambient temperature will intensify the thermal motion of the essential oil molecules, resulting in an increase in the amount of volatile substances escaping per unit time. Especially in scenarios such as high temperature in summer or long-term exposure of the vehicle to the sun, the existing fragrance remaining amount algorithm lacks a temperature compensation mechanism, and its predicted value of the fragrance remaining amount will deviate seriously from the actual consumption amount. In the vehicle-mounted fragrance remaining amount detection method of the present invention, by collecting and processing and calculating the rotation speed factor fn of the blower, the working duration Δt of the blower, the ambient temperature factor gT and the evaporation rate K of the fragrance, the evaporation rate of the essential oil of the fragrance at different ambient temperatures is comprehensively considered, so that the vehicle-mounted fragrance remaining amount detection method in the present invention integrates the above four-dimensional parameters for fragrance remaining amount detection, thereby improving the accuracy of fragrance remaining amount detection, enhancing the reliability of the product, and improving the user experience.

[0046] The present invention provides a vehicle-mounted fragrance system, which can improve the accuracy of detecting the remaining amount of fragrance, enhance the reliability of the product, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the content of the embodiments of the present invention and these drawings.

[0048] Figure 1 is a schematic flow chart of the vehicle-mounted fragrance remaining amount detection method provided by the embodiment of the present invention;

[0049] Figure 2 is a schematic structural diagram of the vehicle-mounted fragrance system provided by the embodiment of the present invention;

[0050] Figure 3 is a side view of the vehicle-mounted fragrance system provided by the embodiment of the present invention;

[0051] Figure 4 is a schematic structural diagram of the fragrance bottle provided by the embodiment of the present invention;

[0052] Figure 5 is a control flow chart of the vehicle-mounted fragrance system provided by the embodiment of the present invention.

[0053] Reference numerals

[0054] 100, housing; 110, air inlet; 120, air outlet;

[0055] 200, fragrance bottle; 210, ID chip; 300, blower; 400, temperature sensor; 500, control main board; 600, wire harness. Detailed implementation manners

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0057] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0058] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it is not necessary to further define and explain it in subsequent figures.

[0059] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present invention is customarily placed when in use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0060] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0062] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the figures, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are only used to explain the present invention and should not be construed as a limitation on the present invention.

[0063] This embodiment provides a method for detecting the remaining amount of in-vehicle fragrance, which can improve the accuracy of detecting the remaining amount of fragrance, enhance the reliability of the product, and improve the user experience.

[0064] As Figure 1As shown in the figure, the vehicle-mounted fragrance remaining amount detection method mainly includes the following steps:

[0065] Collect the initial fragrance content V0 in the fragrance bottle;

[0066] Collect the rotational speed factor fn of the blower;

[0067] Collect the working duration Δt of the blower;

[0068] Collect the ambient temperature factor gT at the blower;

[0069] Collect the fragrance volatilization rate K;

[0070] Perform data processing on the rotational speed factor fn of the blower, the working duration Δt of the blower, the ambient temperature factor gT, and the fragrance volatilization rate K, and calculate the consumption amount ΔV of the fragrance in the fragrance bottle during the Δt time period;

[0071] Calculate the remaining amount of fragrance in the fragrance bottle: V = V0 - ΔV.

[0072] Compared with the prior art, the calculation of the remaining amount of fragrance in the prior art mainly relies on the linear relationship model of the blower rotational speed parameter and the cumulative working duration of the fragrance machine, and fails to fully consider the dynamic influence of the ambient temperature on the volatilization characteristics of the essential oil (fragrance). Since the essential oil volatilization rate has a significant positive correlation with the ambient temperature, that is, an increase in the ambient temperature will exacerbate the thermal motion of essential oil molecules, resulting in an increase in the amount of volatile substances escaping per unit time. Especially in scenarios such as high temperatures in summer or long-term exposure of the vehicle to sunlight, the existing fragrance remaining amount algorithm lacks a temperature compensation mechanism, and its predicted value of the fragrance remaining amount will deviate seriously from the actual consumption amount. In this embodiment, the vehicle-mounted fragrance remaining amount detection method collects and processes the rotational speed factor fn of the blower, the working duration Δt of the blower, the ambient temperature factor gT, and the fragrance volatilization rate K, comprehensively considering the essential oil volatilization rate of the fragrance at different ambient temperatures, so that the vehicle-mounted fragrance remaining amount detection method in this embodiment integrates four-dimensional parameters for fragrance remaining amount detection, thereby improving the accuracy of fragrance remaining amount detection, enhancing the reliability of the product, and improving the user experience.

[0073] The vehicle-mounted fragrance remaining amount detection method in this embodiment mainly includes the following steps:

[0074] Collect the initial fragrance content V0 in the fragrance bottle.

[0075] Specifically, the data of the initial fragrance content V0 in the fragrance bottle is stored in the ID chip in the fragrance bottle, and this data is a known quantity. The user can directly obtain the data of the initial fragrance content V0 (unit: milliliter) on the touch display screen.

[0076] Collect the rotational speed factor fn of the blower.

[0077] Specifically, a, b, and c are all characteristic constants of the blower; n is the set rotational speed of the blower, Nmax is the theoretical maximum rotational speed of the blower, which can be set to 6000 rpm, n ∈ [0, Nmax]; the characteristic constant of the blower a = 0.8, b = 1.2, c = 0.2.

[0078] It can be understood that the characteristic constants of the blower can be flexibly calibrated according to the type of the blower.

[0079] Collect the set rotational speed n of the blower in real time, and calculate the rotational speed factor fn according to the blower characteristic formula:

[0080]

[0081] Collect the working duration Δt of the blower. Specifically, Δt = t2 - t1, and the continuous working duration Δt (unit: minute) of the aroma diffuser can be recorded by the vehicle-mounted controller.

[0082] Collect the ambient temperature factor gT at the blower.

[0083] Specifically, gT = 1 + α(T - T0) + β(T - T0) 2 ; T is the ambient temperature where the blower is located, T0 is the reference temperature, α = 0.03, β = 0.001. T0 = 25°C.

[0084] Collect the ambient temperature T (unit: °C) at the blower through the temperature sensor, and calculate the temperature factor gT based on the reference temperature T0 = 25°C:

[0085] gT = 1 + 0.03(T - 25) + 0.001(T - 25) 2 .

[0086] Collect the evaporation rate K of the aroma.

[0087] Specifically, K type is the aroma type coefficient value, γ is the temperature sensitivity coefficient value, and T is the ambient temperature where the blower is located.

[0088] The aroma type coefficient value K type corresponds one-to-one with the temperature sensitivity coefficient value γ.

[0089] The aroma types include but are not limited to citrus, mint, floral, and woody.

[0090] For the citrus aroma type, the aroma type coefficient value K type = 1.2, and the temperature sensitivity coefficient value γ = 1.1;

[0091] For the mint aroma type, the aroma type coefficient value Ktype = 1, the temperature sensitivity coefficient value γ = 1;

[0092] The fragrance type coefficient value K of the floral fragrance type type = 0.8, the temperature sensitivity coefficient value γ = 0.9;

[0093] The fragrance type coefficient value K of the woody fragrance type type = 0.6, the temperature sensitivity coefficient value γ = 0.8.

[0094] Select the corresponding fragrance type coefficient K according to the fragrance type type and the temperature sensitivity coefficient γ, and calculate the evaporation rate K:

[0095] For example, if the fragrance type is citrus, then K type = 1.2, γ = 1.1; if it is woody, then K type = 0.6, γ = 0.8.

[0096] Perform data processing on the rotation speed factor fn of the blower, the working duration Δt of the blower, the ambient temperature factor gT, and the evaporation rate K of the fragrance, and calculate the consumption ΔV of the fragrance in the fragrance bottle during the Δt period;

[0097]

[0098] To simplify the calculation, the above formula can be processed using a discrete method:

[0099] where Δti is the sampling time interval, and Ki, f{n,i}, g{T,i} are the parameter values in each time period. By discretizing the integral formula, the complexity of the calculation model is reduced, thus making it applicable to in-vehicle embedded systems.

[0100] Calculate the remaining fragrance in the fragrance bottle: V = V0 - ΔV.

[0101] Specifically, the remaining fragrance V is updated in real time:

[0102] V = V0 - ΔV.

[0103] Remaining fragrance display and reminder: The remaining fragrance V is uploaded to the touch display screen in the vehicle for display every preset time (for example, 10 minutes). When V is lower than the preset threshold, a low remaining fragrance warning is triggered. Exemplarily, this low remaining fragrance warning can be used to remind the user that the remaining fragrance is insufficient in the form of voice broadcast or indicator light flashing.

[0104] The remaining fragrance data in the fragrance bottle is updated once every preset time and uploaded to the touch display screen for the user to view. Exemplarily, this preset time can be set to 5 minutes to 20 minutes.

[0105] In some alternative embodiments, the user can also select the value of the fragrance type coefficient K of the mint type type = 1, and the temperature sensitivity coefficient value γ = 1. For the floral fragrance type, the fragrance type coefficient value K type = 0.8, and the temperature sensitivity coefficient value γ = 0.9;

[0106] In some alternative embodiments, the fragrance in the fragrance bottle has multiple fragrance concentrations, including strong fragrance, medium fragrance, and light fragrance, and the fragrance concentration corresponds one-to-one with the set rotational speed n of the blower.

[0107] When the fragrance concentration is strong fragrance, the set rotational speed n of the blower = 5000 rpm;

[0108] When the fragrance concentration is medium fragrance, the set rotational speed n of the blower = 4000 rpm;

[0109] When the fragrance concentration is light fragrance, the set rotational speed n of the blower = 3000 rpm.

[0110] The user can flexibly select the fragrance concentration on the screen according to actual needs.

[0111] Application case:

[0112] Verification of the vehicle-mounted fragrance remaining amount detection method in a typical scenario:

[0113] Assume that the ambient temperature T collected by the temperature sensor at the blower is 35 °C, the fragrance type is citrus, the working duration Δt = 30 minutes, and the blower rotational speed n = 5000 rpm (strong fragrance mode):

[0114] Calculate the rotational speed factor fn:

[0115] Calculate the temperature factor gT:

[0116] gT = 1 + 0.03(35 - 25) + 0.001(35 - 25) 2 = 1 + 0.3 + 0.1 = 1.4;

[0117] Calculate the evaporation rate K:

[0118]

[0119] Calculate the consumption amount ΔV:

[0120]

[0121] Update the remaining amount V: Assume the initial V0 = 50 mg, then the current remaining amount V = 50 - 1.09 = 48.91 mg.

[0122] Compared with the prior art, the traditional algorithm only relies on the linear relationship between the blower speed and the working duration, while the present invention constructs a multi-dimensional non-linear model by introducing the environmental temperature factor (gT), the fragrance type coefficient (K_type), and the temperature sensitivity coefficient (γ), which is specifically embodied as follows:

[0123] Temperature dynamic compensation mechanism: Through the formula gT = 1 + α(T - T0) + β(T - T0) 2 , the non-linear influence of the environmental temperature on the volatilization rate is quantified. For example, when the temperature rises from 25°C to 40°C, the temperature factor gT increases from 1 to 1.45, effectively compensating for the accelerated fragrance volatilization effect caused by high temperature, avoiding the overestimation of the predicted value of the fragrance remaining amount, and improving the accuracy of the fragrance remaining amount detection.

[0124] Fragrance type adaptation: Considering the differences in the volatilization characteristics of different fragrance essential oils (such as citrus and woody), different coefficients are set (such as for citrus, K_type = 1.2, γ = 1.1; for woody, K type = 0.6, γ = 0.8), enabling the algorithm to adapt to a variety of fragrance products and having stronger versatility.

[0125] Blower dynamic characteristic modeling: Using the non-linear formula to describe the relationship between the blower speed and the fragrance volatilization efficiency. Compared with the linear model, the non-linear formula in the present invention better fits the actual working curve of the blower, further reducing the detection error of the fragrance remaining amount.

[0126] In addition, the in-vehicle fragrance remaining amount detection method in this embodiment has a high user interaction friendly performance, which is specifically manifested as follows:

[0127] Remaining amount dynamic update mechanism: The fragrance remaining amount data is updated and displayed every 5 to 20 minutes, avoiding the load on the in-vehicle system caused by frequent refreshing, and at the same time ensuring that users can keep track of the consumption status of the fragrance (essential oil) in the fragrance bottle in real time.

[0128] Fragrance concentration - speed mapping: By presetting speed gears (strong fragrance corresponding to a blower speed of 5000 rpm, medium fragrance corresponding to a blower speed of 4000 rpm, light fragrance corresponding to a blower speed of 3000 rpm), the user operation is simplified, and the speed parameter is directly related to the calculation of the fragrance consumption amount, improving the transparency of the control logic.

[0129] At the same time, the in-vehicle fragrance remaining amount detection method has high compatibility, which is specifically manifested as a parameter configurable design. For example, parameters such as the reference temperature T0 = 25°C, the blower characteristic constants (a = 0.8, b = 1.2, c = 0.2), etc. can be flexibly adjusted according to the hardware model, so as to adapt to the in-vehicle fragrance systems of different vehicle models and improve the flexible applicability.

[0130] Such as Figures 2 - 5This embodiment also provides a vehicle-mounted fragrance system. This vehicle-mounted fragrance system uses the above vehicle-mounted fragrance remaining amount detection method to detect the remaining amount of fragrance in the fragrance bottle 200. The vehicle-mounted fragrance system includes a housing 100, a fragrance bottle 200, a blower 300, and a temperature sensor 400. The fragrance bottle 200 and the blower 300 are both arranged in the housing 100. The air duct of the blower 300 is communicated with the channel of the fragrance bottle 200. The temperature sensor 400 is arranged on the housing 100 and is disposed directly opposite the blower 300. The temperature sensor 400 is used to detect the ambient temperature T at the blower 300, which is also the ambient temperature inside the vehicle cabin of the car.

[0131] Specifically, the housing 100 is made of materials with flame retardancy and essential oil corrosion resistance, such as PP, PA66, etc.; it is internally provided with an installation groove and an air duct structure. The front end of the housing 100 is provided with an air outlet 120, the rear end is provided with a wire harness interface, and a slot is reserved at the top. The bottom of the fragrance bottle 200 is embedded with an ID chip 210. The ID chip 210 pre-stores information such as the volatilization parameters (K_type value, γ value), the remaining amount of fragrance V0, the production date, etc. corresponding to the fragrance type information (such as citrus type, woody type, etc.).

[0132] The blower 300 is installed at the air duct inlet inside the housing 100 and is driven by a brushless DC motor. The theoretical maximum speed Nmax = 6000 rpm. The air outlet of the blower 300 is communicated with the volatilization channel of the fragrance bottle 200 through an air duct, and the fragrance volatilization intensity is controlled by adjusting the speed. The temperature sensor 400 is mounted on the surface of the blower 300 housing and is disposed directly opposite the motor position of the blower 300, and is used to collect the ambient temperature T at the blower 300 in real time.

[0133] Furthermore, the control main board 500 is integrated in the housing 100 and is internally provided with an MCU (Microcontroller Unit) and a storage module, which are responsible for data collection, algorithm calculation, and communication control. One end of the wire harness 600 is connected to the control main board 500 through the wire harness interface, and the other end is connected to the touch display screen of the vehicle-mounted central control, and is used to transmit the remaining amount of fragrance data and warning signals. The touch display screen is integrated on the vehicle console and supports touch operations. The display interface includes a remaining amount of fragrance progress bar, a fragrance type identifier, the current concentration mode (strong fragrance, medium fragrance or light fragrance), and a low remaining amount warning icon.

[0134] In this embodiment, the installation position of the temperature sensor 400 has been verified through simulation and experiments: directly opposite the motor housing of the blower 300, 2 mm away from the motor surface, to avoid temperature measurement distortion caused by direct scouring of the air duct airflow. At the same time, a thermal conductive silicone grease is coated between the temperature sensor 400 and the blower 300 housing to improve the response speed of the temperature sensor 400.

[0135] The control main board 500 sends the updated fragrance remaining amount V = V0 - ΔV to the touch display screen through the wire harness 600, and the remaining amount progress bar is dynamically refreshed. When the remaining amount is lower than the threshold value, a warning icon is triggered and a prompt sound is emitted.

[0136] In this embodiment, the collaborative working mode of the ID chip 210 of the fragrance bottle 200 and the control main board 500 is further described.

[0137] The ID chip 210 stores information such as fragrance type, production batch, expiration date, and fragrance remaining amount. When the fragrance bottle 200 is inserted, the control main board 500 reads the data of the ID chip 210 of the fragrance bottle 200 and verifies its validity. If it is an illegal or expired product, a prompt of "Fragrance bottle 200 is not compatible" will be given on the touch display screen, improving the fragrance identity recognition ability of this vehicle-mounted fragrance system.

[0138] The control main board 500 automatically calls the pre-stored K_type and γ values according to the fragrance type without manual setting by the user, improving the user experience. For example: for mint fragrance, K_type = 1.0, γ = 1.0; for woody fragrance, K_type = 0.6, γ = 0.8.

[0139] In addition, a stepper motor is also provided in the housing 100 in this embodiment. The control main board 500 is signal-connected to the stepper motor, and the stepper motor can control the opening and closing of the fragrance channel of the fragrance bottle 200.

[0140] In some alternative embodiments, the fragrance in the fragrance bottle 200 can be liquid essential oil directly contained in the fragrance bottle 200, can also be a porous ceramic rod impregnated with essential oil, or can be in other forms, etc.

[0141] When the user triggers the fragrance control interface on the touch display screen (integrated on the center console), the system enters the fragrance release control process, and the specific working principle is as follows:

[0142] After the user selects the target fragrance type (such as citrus) and concentration mode (such as strong fragrance) through touch operations, the HMI (Human-Machine Interaction Module) of the touch display screen transmits a digital instruction containing the fragrance type code (such as 01 representing citrus) and the target rotation speed value (such as 5000 rpm) to the control main board 500 through the wire harness 600. The control main board 500 starts the fragrance release control program. The control main board 500 sends a pulse signal to the stepper motor. When the stepper motor rotates to the target angle (such as 72° corresponding to the channel of citrus), the valve core flow channel is aligned with the volatilization hole of the fragrance bottle 200, forming a closed gas path to ensure that only the essential oil molecules of the selected fragrance type enter the air duct. The control main board 500 controls the drive circuit of the blower 300 through a pulse width modulation signal, and calls the preset rotation speed parameter of the blower 300 according to the concentration mode selected by the user (for example, the rotation speed of the blower 300 corresponding to strong fragrance is 5000 rpm). After the blower 300 is started, its centrifugal impeller generates a directional air flow. External air enters the fragrance chamber through the air inlet 110, and under the pressure of the blower 300, it flows through the volatilization channel of the fragrance bottle 200 at a certain flow rate, and then evenly diffuses into the carriage through the grille of the air outlet 120.

[0143] Since the in-vehicle fragrance system in this embodiment uses the above-mentioned in-vehicle fragrance residue detection method to detect the fragrance residue in the fragrance bottle 200, the in-vehicle fragrance system can improve the accuracy of fragrance residue detection, improve the reliability of the product, and improve the user experience.

[0144] Obviously, the above are only the preferred embodiments of the present invention and the applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, it can also include more other equivalent embodiments, and the scope of the present invention is determined by the scope of the appended claims.

[0145] Note that in the description of this specification, the descriptions referring to the terms "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

Claims

1. Vehicle perfume remaining amount detection method, characterized in that, Including: Collecting the initial fragrance content V0 in the fragrance bottle; Collecting the rotation speed factor fn of the blower; Collecting the working duration Δt of the blower; Collecting the ambient temperature factor gT at the blower; Collecting the evaporation rate K of the fragrance; Performing data processing on the rotation speed factor fn of the blower, the working duration Δt of the blower, the ambient temperature factor gT, and the evaporation rate K of the fragrance, and calculating the consumption ΔV of the fragrance in the fragrance bottle during the Δt time period; Calculating the remaining fragrance in the fragrance bottle: V = V0 - ΔV.

2. The vehicle-mounted fragrance remaining amount detection method according to claim 1, wherein The step of performing data processing on the rotation speed factor fn of the blower, the working duration Δt of the blower, the ambient temperature factor gT, and the evaporation rate K of the fragrance, and calculating the consumption ΔV of the fragrance in the fragrance bottle during the Δt time period includes: Wherein: Δt = t2 - t1; K type is the fragrance type coefficient value, γ is the temperature sensitivity coefficient value, and T is the ambient temperature where the blower is located; a, b, and c are all characteristic constants of the blower; n is the set rotational speed of the blower, Nmax is the theoretical maximum rotational speed of the blower, and n ∈ [0, Nmax]; gT = 1 + α(T - T0) + β(T - T0) 2 ; where T is the ambient temperature of the blower, T0 is the reference temperature, α = 0.03, and β = 0.

001.

3. The vehicle-mounted fragrance remaining amount detection method according to claim 2, characterized in that The blower characteristic constants a = 0.8, b = 1.2, c = 0.

2.

4. The vehicle-mounted fragrance remaining amount detection method according to claim 2, wherein T0＝25℃。 5. The vehicle-mounted fragrance remaining amount detection method according to claim 2, wherein, The fragrance type coefficient value K type corresponds one-to-one with the temperature sensitivity coefficient value γ; The fragrance types include citrus, mint, floral, and woody; Aroma type coefficient value K of citrus type = 1.2, temperature sensitivity coefficient value γ = 1.1; Aroma type coefficient value K of mint type = 1, temperature sensitivity coefficient value γ = 1; The fragrance type coefficient value K of the floral fragrance type type = 0.8, and the temperature sensitivity coefficient value γ = 0.9; Woody fragrance type coefficient value K type = 0.6, temperature sensitivity coefficient value γ = 0.

8.

6. The in-vehicle fragrance residue detection method according to claim 2, wherein The step of calculating the remaining fragrance V = V0 - ΔV in the fragrance bottle includes: The remaining fragrance data in the fragrance bottle is updated every preset time and uploaded to the touch display screen for the user to view.

7. The vehicle-mounted fragrance remaining amount detection method according to claim 6, wherein The preset time is set to 5 minutes to 20 minutes.

8. The vehicle-mounted fragrance remaining amount detection method according to claim 2, wherein The fragrance in the fragrance bottle has multiple fragrance concentrations, including strong fragrance, medium fragrance, and light fragrance, and the fragrance concentration corresponds one-to-one with the set rotation speed n of the blower; When the fragrance concentration is strong fragrance, the set rotation speed n of the blower = 5000 rpm; When the fragrance concentration is medium fragrance, the set rotation speed n of the blower = 4000 rpm; When the fragrance concentration is light fragrance, the set rotation speed n of the blower = 3000 rpm.

9. Vehicle-mounted fragrance system, characterized in that, The in-vehicle fragrance system detects the remaining fragrance in the fragrance bottle by using the in-vehicle fragrance remaining amount detection method described in any one of claims 1-8. The in-vehicle fragrance system includes a housing, a fragrance bottle, a blower, and a temperature sensor; The fragrance bottle and the blower are both arranged in the housing. The air duct of the blower is communicated with the channel of the fragrance bottle. The temperature sensor is arranged on the housing and is disposed directly opposite the blower.

10. The in-vehicle fragrance system according to claim 9, wherein, The in-vehicle fragrance system includes a touch display screen, a control main board, and a wiring harness. The control main board is arranged in the housing. One end of the wiring harness is connected to the control main board, and the other end of the wiring harness is connected to the touch display screen; An ID chip is arranged in the fragrance bottle. The ID chip is electrically connected to the control main board. The remaining fragrance data in the fragrance bottle can be transmitted to the control main board, and the control main board transmits the remaining fragrance data in the fragrance bottle to the touch display screen through the wiring harness.

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