Vehicle-mounted demisting system and automobile product

Abstract

The invention discloses a vehicle-mounted demisting system and an automobile product. The vehicle-mounted demisting system comprises a wind shielding module, an in-vehicle environment detection module, an out-vehicle environment detection module, a demisting module and a control module, the control module controls the demisting module according to the in-vehicle dew point temperature detected by the in-vehicle environment detection module and the out-vehicle dew point temperature detected by the out-vehicle environment detection module. The system can automatically detect the in-vehicle dew point temperature and the vehicle exposure point temperature, automatically controls the demisting module to demist the wind shielding module according to the size relation between the in-vehicle dew point temperature and the vehicle exposure point temperature, can automatically identify the fogging risk of the wind shielding module, and automatically realizes demisting treatment under the condition that the fogging risk is relatively large, so that the system is convenient to use. Therefore, a driver does not need to carry out defogging through frequent manual operation, the possibility that the driver is distracted from driving due to defogging is reduced, and the adverse effect on traffic safety caused by fogging of the wind shielding module is reduced. The invention is widely applied to the technical field of automobiles.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an in-vehicle defogging system and automotive products. Background Technology

[0002] While driving, drivers primarily observe the external environment through the windshield to make informed driving decisions. However, in high humidity conditions, water vapor in the air condenses on the windshield surface, forming a mist that obscures the driver's vision, making it difficult to clearly observe the surroundings and interfering with driving, thus affecting traffic safety.

[0003] Current defogging technologies fall into two main categories: chemical defogging and physical defogging. Chemical defogging involves spraying a defogging agent containing surfactants onto the windshield. This agent adheres to the windshield surface, reducing surface tension when water vapor condenses, causing water droplets to quickly slide off or form a transparent water film, thus reducing the number of fog droplets. However, defogging agents are prone to evaporation or deterioration, resulting in only a short effective time with each application, making them inconvenient to use. Furthermore, defogging agents are consumables, requiring continuous investment. Physical defogging technologies include wiping or scraping away water fog from the windshield surface, as well as heating or cooling the windshield as a whole. However, current physical defogging technologies require manual operation by the driver, which can easily distract the driver and pose a driving safety risk. Summary of the Invention

[0004] In view of at least one of the above-mentioned technical problems, the purpose of this invention is to provide an in-vehicle defogging system and an automotive product.

[0005] On one hand, embodiments of the present invention include an in-vehicle defogging system, the in-vehicle defogging system comprising: A transparent windshield module; the windshield module is used to separate the interior space and the exterior space of the vehicle; In-vehicle environment detection module; the in-vehicle environment detection module is used to detect the dew point temperature inside the vehicle, the in-vehicle dew point temperature being the dew point temperature of the in-vehicle space; External environment detection module; the external environment detection module is used to detect the dew point temperature outside the vehicle, the external dew point temperature being the dew point temperature of the external space; Defogging module; the defogging module is used to perform controlled defogging on the windshield module; A control module; the control module is used to control the defogging module according to the dew point temperature inside the vehicle and the dew point temperature outside the vehicle.

[0006] Furthermore, the defogging module includes an internal defogging unit and an external defogging unit; The internal defogging unit is used to defog the inner surface of the windshield module; the inner surface is the side facing the interior space of the vehicle. The external defogging unit is used to defog the outer surface of the windshield module; the outer surface is the side facing the outside space of the vehicle.

[0007] Furthermore, the in-vehicle environment detection module is also used to detect the in-vehicle temperature and humidity, wherein the in-vehicle humidity is the relative humidity of the in-vehicle space; The vehicle exterior environment detection module is also used to detect the vehicle exterior temperature and humidity, wherein the vehicle exterior humidity is the relative humidity of the vehicle exterior space.

[0008] Furthermore, controlling the defogging module based on the in-vehicle dew point temperature and the outside dew point temperature includes: Determine the relationship between the dew point temperature inside the vehicle and the dew point temperature outside the vehicle; When the dew point temperature inside the vehicle is greater than the dew point temperature outside the vehicle, the internal defogging unit is controlled to defog the inner surface of the windshield module. When the dew point temperature inside the vehicle is lower than the dew point temperature outside the vehicle, the external defogging unit is controlled to defog the inner surface of the windshield module.

[0009] Furthermore, the control of the internal defogging unit to perform defogging treatment on the inner surface of the windshield module includes: Obtain the glass temperature; the glass temperature is the temperature of the windshield module. Calculate the temperature difference between the glass temperature and the dew point temperature inside the vehicle to obtain the glass temperature difference inside the vehicle; The defogging intensity inside the vehicle is determined based on the temperature difference between the interior glass and the humidity inside the vehicle. Based on the in-vehicle defogging intensity, control the internal defogging unit to perform defogging treatment; The control of the external defogging unit to perform defogging treatment on the outer surface of the windshield module includes: Calculate the temperature difference between the glass temperature and the dew point temperature outside the vehicle to obtain the temperature difference of the outside glass. The defogging intensity outside the vehicle is determined based on the temperature difference between the exterior glass and the humidity outside the vehicle. Based on the external defogging intensity, the external defogging unit is controlled to perform defogging treatment.

[0010] Furthermore, obtaining the glass temperature includes: Set the weighting coefficients; The glass temperature is obtained by weighting and summing the interior and exterior air temperatures according to the weighting coefficients.

[0011] Furthermore, the vehicle-mounted defogging system also includes a glass temperature sensor; The process of obtaining the glass temperature includes: The glass temperature sensor is used to detect the temperature of the windshield module. The glass temperature is obtained based on the detection results of the glass temperature sensor.

[0012] Furthermore, the vehicle-mounted defogging system also includes a thermoelectric cooling module; the thermoelectric cooling module is integrated into the windshield module, with one end of the thermoelectric cooling module facing the vehicle interior space as the interior end, and the other end of the thermoelectric cooling module facing the exterior space as the exterior end; The control module is also used to control the thermoelectric cooling module according to the dew point temperature inside the vehicle.

[0013] Furthermore, controlling the thermoelectric cooling module based on the vehicle interior dew point temperature includes: The in-vehicle end is configured as a hot end, and the out-of-vehicle end is configured as a cold end; The target heating temperature is determined based on the vehicle interior dew point temperature; the target heating temperature is greater than the vehicle interior dew point temperature. The heating element of the thermoelectric cooling module is controlled to generate heat according to the target heating temperature.

[0014] On the other hand, embodiments of the present invention also include an automotive product, the automotive product including the in-vehicle defogging system described in the embodiments. The beneficial effects of the present invention are as follows: The vehicle-mounted defogging system in the embodiment can automatically detect the dew point temperature inside the vehicle and the dew point temperature outside the vehicle, and automatically control the defogging module to defog the windshield module according to the relationship between them. It can automatically identify the risk of fogging of the windshield module, and automatically perform defogging when the risk of fogging is high. This eliminates the need for the driver to frequently manually operate the defogging, reducing the possibility of the driver being distracted from driving due to defogging, and thus helping to reduce the adverse effects of windshield module fogging on traffic safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the vehicle-mounted defogging system in the embodiment; Figure 2 This is a schematic diagram showing the installation positions of each module in the vehicle-mounted defogging system on the vehicle in this embodiment. Figure 3 This is a schematic diagram of the control architecture of the vehicle-mounted defogging system in the embodiment; Figure 4 This is a schematic diagram illustrating the steps of the control method for the vehicle-mounted defogging system in the embodiment; Figure 5This is a schematic diagram of the thermoelectric cooling module in the embodiment. Detailed Implementation

[0016] Terminology Explanation: Dew point temperature, also known as dew point, refers to the temperature at which air reaches saturation when cooled, given a constant water vapor content and air pressure. Dew point temperature is generally related to the water vapor content and air pressure in the air. However, since the air pressure remains relatively stable in the automotive environment, it can be considered that dew point temperature is only related to the water vapor content in the air. Air temperature: also known as dry-bulb temperature, is the true thermodynamic temperature of the air in the environment; it can be directly detected using instruments such as dry-bulb thermometers based on thermometric media such as mercury or alcohol, or digital air temperature meters based on thermistors. Relative humidity (RH) is the percentage of water vapor pressure in the air to the saturated water vapor pressure at the same temperature, or the ratio of the absolute humidity of moist air to the maximum absolute humidity that can be reached at the same temperature. It can also be expressed as the ratio of the partial pressure of water vapor in moist air to the saturated pressure of water at the same temperature. The relative humidity of the air in the environment can be directly detected using instruments such as wet-bulb and dry-bulb hygrometers or capacitive humidity sensors.

[0017] This embodiment provides an in-vehicle defogging system. (Refer to...) Figure 1 The vehicle-mounted defogger system includes a transparent windshield module, an interior environment detection module, an exterior environment detection module, a defogger module, and a control module. The installation locations of these modules in the vehicle are as follows: Figure 2 As shown.

[0018] Reference Figure 1 and Figure 2 The windshield module, specifically the windshield, is installed on the vehicle and connected to the A-pillar, front roof crossbeam, and front bulkhead crossbeam, thus becoming one of the components that separates the passenger compartment from the external environment. The space within the passenger compartment is the interior space, and the space in the external environment is the exterior space. The windshield module has two surfaces: an inner surface facing the interior space and an outer surface facing the exterior space.

[0019] In this embodiment, the in-vehicle environment detection module is installed in the vehicle interior space, specifically in a location such as the center console in the passenger compartment, to detect the in-vehicle temperature. Humidity inside the car (Relative humidity inside the vehicle) and dew point temperature inside the vehicle Indicators such as (dew point temperature inside the vehicle) are monitored. Specifically, the in-vehicle environment detection module includes components such as a digital thermometer, a capacitive humidity sensor, and a processor. The digital thermometer can directly detect the in-vehicle temperature. The humidity inside the vehicle is directly detected by a capacitive humidity sensor. In engineering, given the relative humidity of the air in an environment... and temperature In this case, empirical formulas can be used.

[0020] The dew point temperature of this environment was calculated. After detecting the temperature inside the car... and car interior humidity Then, the processor in the in-vehicle environment detection module runs an algorithm, substituting the detected indicators into the above formula, that is, making = , = Calculated Dew point temperature inside the vehicle .

[0021] In this embodiment, the external environment detection module is installed in the external space of the vehicle, specifically in a location such as the front bumper beam, to detect the external temperature. outside humidity (Relative humidity of the vehicle's exterior space) and dew point temperature outside the vehicle (Indicators such as dew point temperature of the outside airspace). Specifically, similar to the in-vehicle environment detection module, the out-of-vehicle environment detection module also includes components such as a digital thermometer, a capacitive humidity sensor, and a processor. The outside air temperature is obtained through the digital thermometer. The humidity outside the vehicle is detected by a capacitive humidity sensor. Then, the processor calculates the dew point temperature outside the vehicle. .

[0022] In this embodiment, refer to Figure 1 and Figure 2 The defogging module includes an internal defogging unit and an external defogging unit. Specifically, refer to... Figure 2The internal defrosting unit includes an interior defrosting vent located on the center console. This vent is connected to the air conditioning system, and the airflow is directed towards the inner surface of the windshield module. By blowing air onto the inner surface of the windshield module, defogging is achieved. For example, by setting the air conditioning system to cooling mode, the interior defrosting vent blows cold air onto the inner surface of the windshield module. This reduces the temperature of the windshield module (for simplicity, the temperature difference between the inner and outer surfaces due to insufficient thermal conductivity of the windshield module can be ignored; the overall temperature of the windshield module is considered uniform), i.e., the glass temperature. Reduced to below the vehicle's interior dew point temperature ,Right now < This helps prevent water vapor from forming on the inner surface of the windshield module; alternatively, the air conditioning system can be set to heating mode, causing the defrosting vents inside the vehicle to blow hot air onto the inner surface of the windshield module, thus reducing the glass temperature. Raising the temperature to a higher level (e.g., 50°C) ensures that even if water vapor forms on the inner surface of the windshield module, the higher glass temperature will prevent it from condensing. The water evaporates quickly, thus removing water mist from the inner surface of the windshield module.

[0023] Reference Figure 2 The external defogging unit includes components such as automatic wipers and an automatic glass cleaning unit. When the automatic wipers are activated, they remove water mist from the outer surface of the windshield by wiping it back and forth. The automatic glass cleaning unit sprays pure water or an aqueous solution of surfactants onto the outer surface of the windshield to wash away the water mist. Both the automatic wipers and the automatic glass cleaning unit effectively defog the outer surface of the windshield.

[0024] In this embodiment, a system can be set up in the vehicle-mounted defogging system. Figure 3 The control architecture is shown. (Refer to...) Figure 3 Components with data acquisition, data processing, data output, and control capabilities, such as a CCU (Central Control Unit), can be used as the control module. (See reference...) Figure 3 It also features an Intelligent Cockpit Domain Controller (IDCU) to control and receive data from components such as the in-vehicle environment detection module, the external environment detection module, the glass temperature sensor, and the thermoelectric cooling module. (Refer to...) Figure 3 It also sets up a left domain controller ZCU-L to control the internal defogging unit in the defogging module, and a right domain controller ZCU-R to control the external defogging unit in the defogging module.

[0025] In this embodiment, the control module executes a control method for the vehicle-mounted defogging system, controlling the defogging module based on the dew point temperature inside and outside the vehicle. (Refer to...) Figure 4 The control method for the vehicle-mounted defrosting system includes the following steps: S1. Determine the relationship between the dew point temperature inside the vehicle and the dew point temperature outside the vehicle; S2. When the dew point temperature inside the vehicle is higher than the dew point temperature outside the vehicle, control the internal defogging unit to perform defogging treatment on the inner surface of the windshield module; S3. When the dew point temperature inside the vehicle is lower than the dew point temperature outside the vehicle, control the external defogging unit to perform defogging treatment on the inner surface of the windshield module.

[0026] In this embodiment, the basic logic of steps S1-S3 is shown in Table 1.

[0027] Table 1 shows the basic logic of the control method for vehicle-mounted defogging systems.

[0028] Specifically, in step S1, the control module calls the in-vehicle environment detection module to detect the in-vehicle dew point temperature. The vehicle's external environment detection module is used to detect the dew point temperature outside the vehicle. Regarding the dew point temperature inside the vehicle and vehicle exterior dew point temperature Perform a size comparison.

[0029] Referring to Table 1, if the dew point temperature inside the vehicle... greater than the vehicle's exterior dew point temperature ,Right now > This indicates that at the same time, the inner surface of the windshield module is at greater risk of fogging (this is because, under the same glass temperature, the glass temperature is lower than the dew point temperature inside the vehicle). (The likelihood is higher), therefore, the control module selects to execute step S2, controlling the internal defogging unit to defog the inner surface of the windshield module; if the dew point temperature inside the vehicle is higher... Less than the vehicle's exterior dew point temperature ,Right now < This indicates that at the same time, the outer surface of the windshield module is at greater risk of fogging (this is because, under the same glass temperature, the glass temperature is lower than the dew point temperature outside the vehicle). (The possibility is greater), therefore, the control module selects to execute step S3, controlling the external defogging unit to perform defogging treatment on the outer surface of the windshield module.

[0030] In this embodiment, by setting up an on-board defogging system, the dew point temperature inside and outside the vehicle can be automatically detected. Based on the relationship between them, the defogging module can be automatically controlled to defog the windshield module. It can automatically identify the risk of fogging of the windshield module and automatically perform defogging when the risk of fogging is high. This eliminates the need for the driver to frequently manually operate the defogging function, reducing the possibility of the driver being distracted while driving due to defogging, and thus helping to reduce the adverse effects of windshield module fogging on traffic safety.

[0031] In this embodiment, when the control module executes step S2, which is to control the internal defogging unit to perform defogging treatment on the inner surface of the windshield module, it can specifically perform the following steps: S201. Obtain the glass temperature; S202. Calculate the temperature difference between the glass temperature and the dew point temperature inside the vehicle to obtain the temperature difference of the glass inside the vehicle; S203. Determine the defogging intensity inside the vehicle based on the temperature difference between the interior glass and the humidity inside the vehicle; S204. Based on the defogging intensity inside the vehicle, control the internal defogging system to perform defogging treatment.

[0032] In step S201, if a glass temperature sensor is installed, the control module can directly use the glass temperature sensor to detect the temperature of the windshield module, i.e., the glass temperature. Among them, the glass temperature sensor can detect the glass temperature based on principles such as infrared thermometry or contact thermometry. .

[0033] In step S201, if no glass temperature sensor is installed, or if the glass temperature sensor malfunctions, the control module can estimate the glass temperature. Specifically, the control module can call the in-vehicle environment detection module to detect the in-vehicle temperature. The vehicle's external environment detection module is used to detect the outside temperature. Set weight coefficients According to the weighting coefficient Temperature inside the car With the outside temperature Perform a weighted summation to obtain the glass temperature. Specifically, the control module uses the formula...

[0034] The glass temperature was calculated. In this embodiment, the value can be 0.3≤ Determine the weighting coefficient within the range of ≤0.8 The specific values ​​can also be dynamically adjusted using the weighting coefficients. The numerical value. For example, it can be based on the temperature inside the car. and the outside temperature The difference adjustment, specifically, when When the temperature is ≥15℃, take =0.35, when |Tin-Tout|<15℃, take =0.75. The weighting coefficient can also be adjusted based on vehicle speed. Perform lookup table compensation; for example, when the vehicle speed is greater than 100 km / h, it can be adjusted using the already determined weighting coefficients. Based on the value of, the weighting coefficient Decrease by 0.2 to estimate the impact of external temperature on the weighting coefficients. Make a slight improvement.

[0035] In step S202, the control module calculates the glass temperature. With the dew point temperature inside the car The temperature difference is used to obtain the temperature difference inside the car windows. - In step S203, based on the temperature difference of the car's interior glass... - Humidity inside the car The size combination determines the in-vehicle defogging intensity. In step S204, the control module controls the internal defogging unit to perform defogging treatment of corresponding intensity based on the in-vehicle defogging intensity.

[0036] In this embodiment, when the control module executes step S3, which is to control the external defogging unit to perform defogging treatment on the outer surface of the windshield module, it can specifically perform the following steps: S301. Calculate the temperature difference between the glass temperature and the dew point temperature outside the vehicle to obtain the temperature difference of the glass outside the vehicle; S302. Determine the defogging intensity based on the temperature difference between the exterior glass and the exterior humidity. S303. Based on the intensity of the external defogging, control the external defogging unit to perform defogging treatment.

[0037] The principle of steps S301-S303 is the same as that of steps S202-S204. Specifically, in step S301, the control module calculates the glass temperature. With the vehicle's exterior dew point temperature The temperature difference is used to obtain the temperature difference of the outside glass of the car. - In step S302, based on the temperature difference of the exterior glass... - With the humidity outside the car The combination of sizes determines the external defogging intensity. In step S303, the control module controls the external defogging unit to perform defogging treatment of corresponding intensity based on the external defogging intensity.

[0038] In this embodiment, the specific logic of the control method for the vehicle defogging system executed in steps S202-S204 and S301-S303 is shown in Table 2.

[0039] Table 2 details the control logic of the vehicle-mounted defogging system.

[0040] Referring to Table 2, by executing steps S202-S204, the temperature difference of the car's interior glass can be determined. - Humidity inside the car By combining the size of the components and understanding the physical laws governing fogging on the inner surface of the windshield module, the risk level of fogging on the inner surface of the windshield module is determined. This allows for the determination of the appropriate in-vehicle defogging intensity, controlling the internal defogging unit to perform defogging treatment at the corresponding intensity. This process reduces the risk of blurred vision caused by fogging on the inner surface of the windshield module, thereby ensuring traffic safety.

[0041] Referring to Table 2, by executing steps S301-S303, the temperature difference of the vehicle's exterior glass can be determined. - With the humidity outside the car By combining the size of the components and understanding the physical laws governing fogging on the outer surface of the windshield module, the risk level of fogging on the outer surface of the windshield module is determined. This allows for the determination of the appropriate external defogging intensity, controlling the external defogging unit to perform defogging treatment at the appropriate intensity. This process reduces the risk of poor visibility caused by fogging on the outer surface of the windshield module, thereby ensuring traffic safety.

[0042] Therefore, by executing steps S201-S204 and S301-S303, the vehicle-mounted defogging system can simultaneously identify the risk of fogging on the inner surface of the windshield module and the risk of fogging on the outer surface of the windshield module, and perform defogging treatment of corresponding intensity on the inner and outer surfaces of the windshield module respectively, thereby helping to obtain a defogging effect that matches the risk and intensity of fogging, thus ensuring that the driver's vision is clear when observing through the windshield module.

[0043] In this embodiment, refer to Figure 5 A thermoelectric cooling module can be installed. Specifically, the thermoelectric cooling module is a device that operates based on the principle of semiconductor refrigeration. It can be manufactured using transparent oxide semiconductors such as ZnO, IGZO, and ITO, and includes an end facing the vehicle interior (interior end) and an end facing the exterior (exterior end). Specifically, such as... Figure 5As shown, the thermoelectric cooling module can be integrated inside the windshield module, so that the windshield module as a whole and the thermoelectric cooling module remain transparent and do not affect the driver's line of sight through the windshield module.

[0044] In this embodiment, the control method executed by the control module further includes a step of controlling the thermoelectric cooling module based on the vehicle interior dew point temperature, which specifically includes the following steps: S4. Configure the interior end as the hot end and the exterior end as the cold end; S5. Determine the target heating temperature based on the dew point temperature inside the vehicle in a positive correlation. S6. Control the hot end of the thermoelectric cooling module to generate heat according to the target heating temperature.

[0045] In step S4, the control module controls the direction of the current through the thermoelectric cooling module so that when the thermoelectric cooling module is powered on, the end inside the vehicle is the heating end, and the end outside the vehicle is the cooling end.

[0046] In step S5, the control module acquires the in-vehicle dew point temperature detected by the in-vehicle environment detection module. Set the target heating temperature. Specifically, the set target heating temperature... greater than the dew point temperature inside the vehicle In this embodiment, the control module can be set with a coefficient greater than 1. (For example, you can set) =1.1), according to the formula

[0047] The target heating temperature was calculated. The target heating temperature is set in this way. Total temperature greater than the vehicle interior dew point temperature Moreover, the dew point temperature inside the car The larger the value, the higher the target heating temperature. The larger.

[0048] In step S6, when the control module operates as a thermoelectric cooling module, the temperature of its hot end can rise and be maintained at the target heating temperature. The goal is to control the current flowing through the thermoelectric cooling module, thereby controlling the heating action of the hot end of the thermoelectric cooling module.

[0049] based on Figure 5 The structure shown demonstrates that the heat generated by the hot end of the thermoelectric cooling module will cause the temperature of the inner surface of the windshield module to reach and be maintained at the target heating temperature. On the other hand, because the cold end of the thermoelectric cooling module also cools down, the temperature of the outer surface of the windshield module will drop, typically falling below the dew point temperature outside the vehicle. The temperature.

[0050] In this embodiment, by using Figure 5 The structure shown, along with steps S4-S6, utilizes the principle that one end of the thermoelectric cooling module heats up while the other end cools down during operation, thus maintaining the temperature of the inner surface of the windshield module at the target heating temperature. This temperature is higher than the dew point temperature inside the car. Therefore, the risk of water vapor condensation on the inner surface of the windshield module is reduced, so that water vapor will not condense on the inner surface of the windshield module, thus achieving a defogging effect on the inner surface of the windshield module. This avoids the need to use components such as the in-vehicle defogging vents included in the internal defogging unit to defog the inner surface of the windshield module (the defogging treatment of such components is usually inefficient); although the cold end of the thermoelectric cooling module also cools down, causing the temperature of the outer surface of the windshield module to drop below the dew point temperature outside the vehicle. The temperature increases the risk of condensation on the outer surface of the windshield module. However, because the external defogging unit includes automatic wipers and automatic glass cleaning units, it can directly and efficiently defog the outer surface of the windshield module through sweeping and spraying water. Therefore, even if condensation forms on the outer surface of the windshield module, it can be removed quickly and promptly.

[0051] Therefore, the principle of executing steps S4-S6 in this embodiment is as follows: by controlling the thermoelectric cooling module to simultaneously heat and cool the windshield module, the rapid heating and high thermal conductivity of the vehicle interior end (hot end) integrated inside the windshield module can be utilized to quickly heat the inner surface of the windshield module (the temperature rise rate of this heating is likely to be higher than that of heating through the vehicle interior defrosting vents), thereby rapidly reducing the risk of water vapor condensation on the inner surface of the windshield module; although the risk of water vapor condensation on the outer surface of the windshield module is increased, the efficient and rapid defogging characteristics of the external defrosting unit are utilized to effectively address this risk; therefore, by executing steps S4-S6, the risk of water vapor condensation on the inner and outer surfaces of the windshield module is transferred by utilizing the characteristics of the thermoelectric cooling module and the external defrosting unit, thereby effectively reducing the overall risk of water vapor condensation on the windshield module and the risks after water vapor condensation occurs, which is conducive to quickly defogging the windshield module, ensuring clear visibility for the driver, and contributing to traffic safety.

[0052] A computer program that executes the control method of the vehicle defogging system in this embodiment can be written into a computer device or storage medium. When the computer program is read out and run, the control method of the vehicle defogging system in this embodiment is executed, thereby achieving the same technical effect as the control method of the vehicle defogging system in the embodiment.

[0053] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this disclosure are only relative to the relative positional relationships of the components of this disclosure in the accompanying drawings. The singular forms "a," "an," and "the" used in this disclosure are also intended to include the plural forms, unless the context clearly indicates otherwise. Moreover, unless otherwise defined, all technical and scientific terms used in this embodiment have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this embodiment specification is only for describing particular embodiments and is not intended to limit the invention. The term "and / or" as used in this embodiment includes any combination of one or more of the associated listed items.

[0054] It should be understood that although various elements may be described in this disclosure using terms such as "second," "third," etc., these elements should not be limited to these terms. These terms are used only to distinguish elements of the same type from one another. For example, an element may also be referred to as a second element without departing from the scope of this disclosure, and similarly, a second element may also be referred to as an element. The use of any and all instances or exemplary language ("e.g.," "such as," etc.) provided in this embodiment is intended only to better illustrate embodiments of the invention and, unless otherwise required, does not impose a limitation on the scope of the invention.

[0055] It should be recognized that embodiments of the present invention can be implemented or carried out by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable storage medium. The method can be implemented using standard programming techniques—including a non-transitory computer-readable storage medium configured with a computer program, wherein such a storage medium causes the computer to operate in a specific and predefined manner—according to the methods and drawings described in the specific embodiments. Each program can be implemented in a high-level procedural or object-oriented programming language to communicate with the computer system. However, if desired, the program can be implemented in assembly or machine language. In any case, the language can be a compiled or interpreted language. Furthermore, for this purpose, the program can run on a programmed application-specific integrated circuit (ASIC).

[0056] Furthermore, the procedures described in this embodiment can be performed in any suitable order unless otherwise indicated by this embodiment or otherwise obviously contradict the context. The procedures (or variations and / or combinations thereof) described in this embodiment can be executed under the control of one or more computer systems configured with executable instructions, and can be implemented by hardware or a combination thereof as code (e.g., executable instructions, one or more computer programs, or one or more applications) that commonly executes on one or more processors. A computer program includes a plurality of instructions executable by one or more processors.

[0057] Furthermore, the method can be implemented in any suitable type of computing platform, including but not limited to personal computers, minicomputers, mainframes, workstations, networked or distributed computing environments, standalone or integrated computer platforms, or in communication with charged particle tools or other imaging devices, etc. Aspects of the invention can be implemented as machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, optical read and / or write storage medium, RAM, ROM, etc., such that it is readable by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the processes described herein. Furthermore, the machine-readable code, or portions thereof, can be transmitted via wired or wireless networks. The invention of this embodiment includes these and other different types of non-transitory computer-readable storage media when such media comprises instructions or programs that implement the steps above in conjunction with a microprocessor or other data processor. When programmed according to the methods and techniques of the invention, the invention also includes the computer itself.

[0058] A computer program can be applied to input data to perform the functions of this embodiment, thereby transforming the input data to generate output data stored in non-volatile memory. The output information can also be applied to one or more output devices, such as a display. In a preferred embodiment of the invention, the transformed data represents physical and tangible objects, including specific visual depictions of physical and tangible objects generated on the display.

[0059] The above are merely preferred embodiments of the present invention. The present invention is not limited to the above-described embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention, as long as they achieve the technical effects of the present invention by the same means, should be included within the scope of protection of the present invention. Within the scope of protection of the present invention, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A vehicle-mounted defogging system, characterized in that, The vehicle-mounted defogging system includes: A transparent windshield module; the windshield module is used to separate the interior space and the exterior space of the vehicle; In-vehicle environment detection module; the in-vehicle environment detection module is used to detect the dew point temperature inside the vehicle, the in-vehicle dew point temperature being the dew point temperature of the in-vehicle space; External environment detection module; the external environment detection module is used to detect the dew point temperature outside the vehicle, the external dew point temperature being the dew point temperature of the external space; Defogging module; the defogging module is used to perform controlled defogging on the windshield module; A control module; the control module is used to control the defogging module according to the dew point temperature inside the vehicle and the dew point temperature outside the vehicle.

2. The vehicle-mounted defogging system according to claim 1, characterized in that: The defogging module includes an internal defogging unit and an external defogging unit; The internal defogging unit is used to defog the inner surface of the windshield module; the inner surface is the side facing the interior space of the vehicle. The external defogging unit is used to defog the outer surface of the windshield module; The outer surface is the side facing the external space of the vehicle.

3. The vehicle-mounted defogging system according to claim 2, characterized in that: The in-vehicle environment detection module is also used to detect the in-vehicle temperature and humidity, wherein the in-vehicle humidity is the relative humidity of the in-vehicle space; The vehicle exterior environment detection module is also used to detect the vehicle exterior temperature and humidity, wherein the vehicle exterior humidity is the relative humidity of the vehicle exterior space.

4. The vehicle-mounted defogging system according to claim 3, characterized in that, The control of the defogging module based on the vehicle interior dew point temperature and the vehicle exterior dew point temperature includes: Determine the relationship between the dew point temperature inside the vehicle and the dew point temperature outside the vehicle; When the dew point temperature inside the vehicle is greater than the dew point temperature outside the vehicle, the internal defogging unit is controlled to defog the inner surface of the windshield module. When the dew point temperature inside the vehicle is lower than the dew point temperature outside the vehicle, the external defogging unit is controlled to defog the inner surface of the windshield module.

5. The vehicle-mounted defogging system according to claim 4, characterized in that: The control of the internal defogging unit to defog the inner surface of the windshield module includes: Obtain the glass temperature; the glass temperature is the temperature of the windshield module. Calculate the temperature difference between the glass temperature and the dew point temperature inside the vehicle to obtain the glass temperature difference inside the vehicle; The defogging intensity inside the vehicle is determined based on the temperature difference between the interior glass and the humidity inside the vehicle. Based on the in-vehicle defogging intensity, control the internal defogging unit to perform defogging treatment; The control of the external defogging unit to perform defogging treatment on the outer surface of the windshield module includes: Calculate the temperature difference between the glass temperature and the dew point temperature outside the vehicle to obtain the temperature difference of the outside glass. The defogging intensity outside the vehicle is determined based on the temperature difference between the exterior glass and the humidity outside the vehicle. Based on the external defogging intensity, the external defogging unit is controlled to perform defogging treatment.

6. The vehicle-mounted defogging system according to claim 5, characterized in that, The process of obtaining the glass temperature includes: Set the weighting coefficients; The glass temperature is obtained by weighting and summing the interior and exterior air temperatures according to the weighting coefficients.

7. The vehicle-mounted defogging system according to claim 5, characterized in that: The vehicle-mounted defogging system also includes a glass temperature sensor; The process of obtaining the glass temperature includes: The glass temperature sensor is used to detect the temperature of the windshield module. The glass temperature is obtained based on the detection results of the glass temperature sensor.

8. The vehicle-mounted defogging system according to any one of claims 1-7, characterized in that: The vehicle-mounted defogging system also includes a thermoelectric cooling module; the thermoelectric cooling module is integrated into the windshield module, with one end of the thermoelectric cooling module facing the interior space as the interior end, and the other end of the thermoelectric cooling module facing the exterior space as the exterior end; The control module is also used to control the thermoelectric cooling module according to the dew point temperature inside the vehicle.

9. The vehicle-mounted defogging system according to claim 8, characterized in that, The control of the thermoelectric cooling module based on the vehicle interior dew point temperature includes: The in-vehicle end is configured as a hot end, and the out-of-vehicle end is configured as a cold end; The target heating temperature is determined based on the vehicle interior dew point temperature; the target heating temperature is greater than the vehicle interior dew point temperature. The heating element of the thermoelectric cooling module is controlled to generate heat according to the target heating temperature.

10. An automobile product, characterized in that, The automotive product includes the vehicle defogging system as described in any one of claims 1-9.

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