Car window condensation early warning system and method

Abstract

The invention discloses an automobile window condensation early warning system and method, and relates to the technical field of automobile engineering. Through the vehicle window condensation early warning system comprising a processor and a sensor system (comprising temperature and humidity sensors located inside and outside a vehicle and temperature sensors located on the inner surface and the outer surface of vehicle window glass), whether the inner surface or the outer surface of a vehicle window has the risk of fogging or frosting or not is automatically monitored; an early warning signal is triggered before the automobile window is frosted or fogged or at the initial stage of the automobile window, so that the reaction speed is increased, and the driving safety is improved; besides, before the information used for representing the condensation risk of the inner surface of the window glass is output, the adopted first threshold value and the adopted second threshold value are determined by a temperature and humidity conversion coefficient (used for representing the temperature adjustment amount caused by humidity change) and a temperature value and a humidity value collected by a first temperature and humidity sensor, so that the selected first threshold value and the selected second threshold value are relatively appropriate; therefore, the accuracy of outputting the information for representing the condensation risk of the inner surface or the outer surface of the window glass is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile engineering, and in particular to a vehicle window condensation warning system and method. Background Art

[0002] In automotive design, glass frost and fogging have always been a challenge, especially during the autumn, winter, and rainy seasons. A typical scenario involves driving out of a basement in winter. The high basement temperature causes the interior of the vehicle to be warmer than the exterior. The glass is rapidly cooled by the cold air outside. When water vapor in the warmer air inside comes into contact with the cooler glass surface, it cools down and condenses into tiny droplets, forming fog. Frost or fog on the glass can severely impair the driver's vision, increasing driving risks.

[0003] Currently, users typically remove the fog or frost from the inside or outside of the windshield after noticing it. However, this method relies on users actively checking, and by the time users notice it, the windows are already fogged or frosted. This results in a lag in detecting fog or frost on the windows, compromising driving safety.

[0004] It can be seen that how to automatically and efficiently monitor the fogging and frosting of automobile glass to improve driving safety is a technical problem that people in this field urgently need to solve. Summary of the Invention

[0005] The purpose of the present invention is to provide a vehicle window condensation warning system and method to solve the problems of relying on users to actively check the vehicle window condensation situation, poor automation, and the vehicle window being fogged or frosted when the user discovers it, resulting in a lag in monitoring the fogging or frost on the vehicle window, which affects driving safety.

[0006] To solve the above technical problems, the present invention provides a vehicle window condensation warning system, comprising: a processor and a sensor system, wherein the sensor system comprises a first temperature and humidity sensor located inside the vehicle, a second temperature and humidity sensor located outside the vehicle, a first temperature sensor located on the inner surface of the vehicle window glass, and a second temperature sensor located on the outer surface of the vehicle window glass;

[0007] The processor is connected to each sensor in the sensor system and is configured to obtain data collected by each sensor; upon detecting that the temperature value collected by the first temperature sensor is less than or equal to a first threshold, outputting information indicating a risk of condensation on the inner surface of the vehicle window glass; wherein the first threshold is determined by a temperature-humidity conversion coefficient, the temperature value collected by the first temperature-humidity sensor, and the humidity value; the temperature-humidity conversion coefficient is configured to indicate an amount of temperature adjustment caused by humidity changes;

[0008] In a case where it is detected that the temperature value collected by the second temperature sensor is less than or equal to a second threshold value, output information indicating that the outer surface of the vehicle window glass is at risk of condensation; wherein the second threshold value is determined by the humidity-temperature conversion coefficient, the temperature value and the humidity value collected by the second temperature and humidity sensor.

[0009] Exemplarily, the first temperature and humidity sensor is located at a center console, an underside of an instrument panel, or a cabin ventilation duct position of the vehicle; and the second temperature and humidity sensor is located at an outer circulating air intake pipe of the vehicle, a front bumper air intake grille of the vehicle, or a back surface.

[0010] Exemplarily, the first temperature sensor and the second temperature sensor are both non-contact sensors.

[0011] Exemplarily, the sensors are all micro-electro-mechanical system sensors.

[0012] Exemplarily, after obtaining the data collected by the sensors, before detecting the relationship between the temperature value collected by the first temperature sensor and the first threshold value, or before detecting the relationship between the temperature value collected by the second temperature sensor and the second threshold value, the processor further comprises:

[0013] filtering the data collected by the sensors; wherein the filtering comprises at least Kalman filtering algorithm or median filtering algorithm;

[0014] detecting the relationship between the temperature value collected by the first temperature sensor and the first threshold value, or detecting the relationship between the temperature value collected by the second temperature sensor and the second threshold value comprises:

[0015] obtaining a first temperature value obtained by filtering the temperature value collected by the first temperature sensor; and detecting the relationship between the first temperature value and the first threshold value;

[0016] obtaining a second temperature value obtained by filtering the temperature value collected by the second temperature sensor; and detecting the relationship between the second temperature value and the second threshold value.

[0017] Exemplarily, determining the first threshold value comprises:

[0018] obtaining a first difference value between the saturation humidity value and the humidity value collected by the first temperature and humidity sensor;

[0019] obtaining a first ratio value between the first difference value and the humidity-temperature conversion coefficient;

[0020] obtaining a second difference value obtained by subtracting the first ratio value from the temperature value collected by the first temperature and humidity sensor;

[0021] determining the first threshold value according to the second difference value;

[0022] determining the second threshold value comprises:

[0023] obtaining a third difference value between the saturated humidity value and the humidity value collected by the second temperature and humidity sensor;

[0024] obtaining a second ratio value between the third difference value and the temperature and humidity conversion coefficient;

[0025] obtaining a fourth difference value obtained by subtracting the second ratio value from the temperature value collected by the second temperature and humidity sensor;

[0026] determining the second threshold value according to the fourth difference value.

[0027] Exemplarily, the system further comprises a warning module connected with the processor, which is configured to give a warning according to the information output by the processor for indicating that the inner surface of the vehicle window glass has a condensation risk, or give a warning according to the information output by the processor for indicating that the outer surface of the vehicle window glass has a condensation risk.

[0028] Exemplarily, the warning module gives a warning according to the information output by the processor for indicating that the inner surface of the vehicle window glass has a condensation risk, or gives a warning according to the information output by the processor for indicating that the outer surface of the vehicle window glass has a condensation risk, which comprises:

[0029] obtaining a first historical temperature value and a first historical humidity value collected by the sensor when the inner surface of the vehicle window glass condenses; determining a first warning condition according to the first historical temperature value and the first historical humidity value; and giving a warning according to the information output by the processor for indicating that the inner surface of the vehicle window glass has a condensation risk when it is detected that the current temperature value and the current humidity value collected by the sensor meet the first warning condition;

[0030] obtaining a second historical temperature value and a second historical humidity value collected by the sensor when the outer surface of the vehicle window glass condenses; determining a second warning condition according to the second historical temperature value and the second historical humidity value; and giving a warning according to the information output by the processor for indicating that the outer surface of the vehicle window glass has a condensation risk when it is detected that the current temperature value and the current humidity value collected by the sensor meet the second warning condition.

[0031] Exemplarily, the warning module is a display screen, and the warning module gives a warning according to the information output by the processor for indicating that the inner surface of the vehicle window glass has a condensation risk, or gives a warning according to the information output by the processor for indicating that the outer surface of the vehicle window glass has a condensation risk, which comprises:

[0032] popping up an option of a condensation warning of the outer surface of the vehicle window glass, or popping up an option of a condensation warning of the inner surface of the vehicle window glass on the central control screen of the vehicle;

[0033] In response to the user's operation on the option, the water mist on the inner surface of the window glass or the window surface is processed.

[0034] To solve the above technical problems, the application further provides a vehicle window condensation early warning method applied to a vehicle window condensation early warning system, the vehicle window condensation early warning system comprising a processor and a sensor system, the sensor system comprising a first temperature and humidity sensor located in a vehicle, a second temperature and humidity sensor located outside the vehicle, a first temperature sensor located on an inner surface of a window glass, and a second temperature sensor located on an outer surface of the window glass; the processor is connected with each sensor in the sensor system; the method comprises:

[0035] acquiring data collected by each sensor;

[0036] in a case where it is detected that a temperature value collected by the first temperature sensor is less than or equal to a first threshold value, outputting information for representing that the inner surface of the window glass has a condensation risk; wherein the first threshold value is determined by a temperature and humidity conversion coefficient, a temperature value and a humidity value collected by the first temperature and humidity sensor; the temperature and humidity conversion coefficient is used to represent a temperature adjustment amount caused by humidity change;

[0037] in a case where it is detected that a temperature value collected by the second temperature sensor is less than or equal to a second threshold value, outputting information for representing that the outer surface of the window glass has a condensation risk; wherein the second threshold value is determined by the temperature and humidity conversion coefficient, a temperature value and a humidity value collected by the second temperature and humidity sensor.

[0038] The vehicle window condensation early warning system provided by the application comprises a processor and a sensor system. The sensor system comprises a first temperature and humidity sensor inside a vehicle, a second temperature and humidity sensor outside the vehicle, a first temperature sensor on an inner surface of a vehicle window glass, and a second temperature sensor on an outer surface of the vehicle window glass; and the processor is connected with each sensor in the sensor system. The processor is used to acquire data collected by each sensor; in the case that a temperature value collected by the first temperature sensor is less than or equal to a first threshold value, information indicating that the inner surface of the vehicle window glass has a condensation risk is output; and in the case that a temperature value collected by the second temperature sensor is less than or equal to a second threshold value, information indicating that the outer surface of the vehicle window glass has a condensation risk is output. The vehicle window condensation early warning system is used to automatically monitor whether the inner surface or the outer surface of the vehicle window has a risk of fogging or frosting; the system can trigger a warning signal before or at an initial stage of the vehicle window frosting or fogging, so that the reaction speed is improved and the safety of driving is improved; in addition, the first threshold value and the second threshold value are determined by a temperature and humidity conversion coefficient (used to indicate a temperature adjustment amount caused by humidity change), a temperature value and a humidity value collected by the first temperature and humidity sensor before the information indicating that the inner surface of the vehicle window glass has a condensation risk is output; so that the selected first threshold value and the second threshold value are more appropriate, and the accuracy of the information indicating that the inner surface of the vehicle window glass or the outer surface of the vehicle window glass has a condensation risk is improved.

[0039] In addition, the application further provides a vehicle window condensation early warning method, which has the same or corresponding technical features as the vehicle window condensation early warning system described above and has the same effects. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the application, the drawings required in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0041] Figure 1 A schematic diagram of a vehicle window condensation early warning system provided by an embodiment of the application;

[0042] Figure 2 A schematic diagram of the positions of sensors in a sensor system provided by an embodiment of the application;

[0043] Figure 3 A flowchart of a vehicle window inner surface fogging risk judgment method provided by an embodiment of the application;

[0044] Figure 4 A flowchart of a vehicle window outer surface fogging risk judgment method provided by an embodiment of the application. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0046] The core of the present invention is to provide a vehicle window condensation warning system and method to solve the problems of relying on users to actively check the vehicle window condensation situation, poor automation, and the vehicle window being fogged or frosted when the user discovers it, resulting in a lag in monitoring the fogging or frost on the vehicle window, which affects driving safety.

[0047] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods. Figure 1 A schematic diagram of a vehicle window condensation warning system provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the system includes a processor 1 and a sensor system 2. Sensor system 2 includes a first temperature and humidity sensor located inside the vehicle, a second temperature and humidity sensor located outside the vehicle, a first temperature sensor located on the inner surface of the vehicle window glass, and a second temperature sensor located on the outer surface of the vehicle window glass. The specific location of each sensor in sensor system 2 is not limited; for example, the first temperature and humidity sensor can be located inside the vehicle, the second temperature and humidity sensor can be located outside the vehicle, the first temperature sensor can be located on the inner surface of the vehicle window glass, and the second temperature sensor can be located on the outer surface of the vehicle window glass.

[0048] In some embodiments, the first temperature and humidity sensor is located on the center console, the lower side of the dashboard, or the vehicle's cabin ventilation duct; the second temperature and humidity sensor is located on the vehicle's external circulation air intake duct, the vehicle's front bumper air intake grille, or the back. Figure 2 A schematic diagram of the positions of sensors in a sensor system provided by an embodiment of the present invention. Figure 2 In the figure, A represents the second temperature sensor, B represents the first temperature sensor, C represents the first temperature and humidity sensor, and D represents the second temperature and humidity sensor. A temperature and humidity sensor is placed inside and outside the car, and a temperature sensor is placed inside and outside the windshield to monitor the surface temperature of the glass. Typical sensor placement is as follows: Figure 2As shown, the second temperature sensor A is used to monitor the windshield outer surface temperature, which needs to be installed on the outside of the windshield, and the second temperature sensor needs to be close to the outside of the windshield; the first temperature sensor B is located on the inside of the windshield, needs to be close to the outside of the windshield, and is used to monitor the windshield inner surface temperature; the first temperature and humidity sensor C is located in the vehicle cabin and can be located in the center console, the lower side of the instrument panel, the automobile cabin ventilation pipeline and other positions, which outputs the indoor temperature and humidity; the second temperature and humidity sensor D is located outside the vehicle cabin, generally located in the front bumper air inlet grille or back, outer circulation air inlet pipe and other positions, which can provide outdoor temperature and humidity information. In addition, in order to avoid physical interference of the sensor to the surface of the window, in the implementation, the first temperature sensor and the second temperature sensor are both non-contact sensors. In addition, in order to more accurately determine the small temperature change and humidity level of the window surface, in the implementation, the sensors are all micro-electro-mechanical system sensors. That is, by using high-precision temperature and humidity sensors, such as micro-electro-mechanical system technology-based sensors, the small temperature change and humidity level of the window surface can be accurately measured.

[0049] The processor is connected with each sensor in the sensor system, and is used to acquire data collected by each sensor. In order to improve the accuracy of the early warning, after acquiring the data collected by each sensor, before detecting the relationship between the temperature value collected by the first temperature sensor and the first threshold value, or before detecting the relationship between the temperature value collected by the second temperature sensor and the second threshold value, the processor further includes:

[0050] The data collected by the sensor is filtered; wherein the filtering process at least includes Kalman filtering algorithm or median filtering algorithm.

[0051] Correspondingly, detecting the relationship between the temperature value collected by the first temperature sensor and the first threshold value, or detecting the relationship between the temperature value collected by the second temperature sensor and the second threshold value includes:

[0052] Acquiring the first temperature value obtained by filtering the temperature value collected by the first temperature sensor; detecting the relationship between the first temperature value and the first threshold value;

[0053] Acquiring the second temperature value obtained by filtering the temperature value collected by the second temperature sensor; detecting the relationship between the second temperature value and the second threshold value.

[0054] By filtering the data collected by the sensor, and based on the relationship between the temperature value after filtering and the threshold value for early warning, the influence of sensor noise is avoided, and the accuracy of early warning is improved.

[0055] In a case where it is detected that the temperature value collected by the first temperature sensor is less than or equal to a first threshold value, output information for characterizing that there is a risk of condensation on the inner surface of the vehicle window glass; wherein the first threshold value is determined by a temperature-humidity conversion coefficient, a temperature value and a humidity value collected by the first temperature and humidity sensor; the temperature-humidity conversion coefficient is used to characterize the amount of temperature adjustment caused by humidity change;

[0056] In a case where it is detected that the temperature value collected by the second temperature sensor is less than or equal to a second threshold value, output information for characterizing that there is a risk of condensation on the outer surface of the vehicle window glass; wherein the second threshold value is determined by a temperature-humidity conversion coefficient, a temperature value and a humidity value collected by the second temperature and humidity sensor.

[0057] To determine the first threshold value and the second threshold value, in implementation, determining the first threshold value includes:

[0058] obtaining a first difference value between a saturated humidity value and a humidity value collected by the first temperature and humidity sensor;

[0059] obtaining a first ratio value between the first difference value and the temperature-humidity conversion coefficient;

[0060] obtaining a second difference value obtained by subtracting the first ratio value from the temperature value collected by the first temperature and humidity sensor;

[0061] determining the first threshold value according to the second difference value.

[0062] If the saturated humidity value is 100 and the temperature-humidity conversion coefficient is 5, the expression of the first threshold value (in ℃) is: the temperature value collected by the first temperature and humidity sensor - (100 - the humidity value collected by the first temperature and humidity sensor) / 5. It is worth noting that the humidity value collected by the first temperature and humidity sensor in the expression only uses its numerical value.

[0063] Determining the second threshold value includes:

[0064] obtaining a third difference value between a saturated humidity value and a humidity value collected by the second temperature and humidity sensor;

[0065] obtaining a second ratio value between the third difference value and the temperature-humidity conversion coefficient;

[0066] obtaining a fourth difference value obtained by subtracting the second ratio value from the temperature value collected by the second temperature and humidity sensor;

[0067] determining the second threshold value according to the fourth difference value.

[0068] The expression of the second threshold value (in ℃) is: the temperature value collected by the second temperature and humidity sensor - (100 - the humidity value collected by the second temperature and humidity sensor) / 5. Similarly, the humidity value collected by the second temperature and humidity sensor in the expression only uses its numerical value.

[0069] Figure 3 A flow chart of a method for judging the risk of fogging on the inner surface of a vehicle window is provided for an embodiment of the present application, as shown in Figure 3 The method comprises:

[0070] S10: inputting the temperature T1 inside the vehicle, the humidity H1 inside the vehicle, and the temperature T2 of the inner surface of the vehicle window;

[0071] S11: judging whether T2≤T1-(100-H1) / 5; if yes, proceed to step S12; if no, proceed to step S13;

[0072] S12: determining that there is a risk of fogging on the inner surface of the vehicle window;

[0073] S13: determining that there is no risk of fogging on the inner surface of the vehicle window.

[0074] Figure 4 A flow chart of a method for judging the risk of fogging on the outer surface of a vehicle window is provided for an embodiment of the present application, as shown in Figure 4 The method comprises:

[0075] S14: inputting the temperature T3 outside the vehicle, the humidity H2 outside the vehicle, and the temperature T4 of the outer surface of the vehicle window;

[0076] S15: judging whether T4≤T3-(100-H2) / 5; if yes, proceed to step S16; if no, proceed to step S17;

[0077] S16: determining that there is a risk of fogging on the outer surface of the vehicle window;

[0078] S17: determining that there is no risk of fogging on the outer surface of the vehicle window.

[0079] Further, the vehicle window condensation warning system further comprises a warning module. The warning module is connected to the processor and is configured to issue a warning according to the information output by the processor indicating that there is a risk of condensation on the inner surface of the vehicle window, or issue a warning according to the information output by the processor indicating that there is a risk of condensation on the outer surface of the vehicle window.

[0080] The warning module is not limited and can be a multi-mode warning system including indicator lights, screen pop-ups, and voice reminders to meet the needs and preferences of different drivers. The warning module also has a self-adaptive adjustment function to dynamically adjust the warning intensity according to the feedback of the driver. The timeliness and effectiveness of the warning are improved to ensure that the driver can take action quickly. The multi-mode warning mechanism increases the robustness of the system, which can effectively convey warning information even when the driver's attention is distracted.

[0081] To reduce false positives and false negatives, in implementation, the warning module warns according to the information output by the processor indicating that the inner surface of the window glass is at risk of condensation, or according to the information output by the processor indicating that the outer surface of the window glass is at risk of condensation, which includes:

[0082] When the inner surface of the window glass condenses, the sensor collects first historical temperature and humidity values; the first warning condition is determined according to the first historical temperature and humidity values; in the case where the current temperature and humidity values collected by the sensor meet the first warning condition, the warning is given according to the information output by the processor indicating that the inner surface of the window glass is at risk of condensation;

[0083] When the outer surface of the window glass condenses, the sensor collects second historical temperature and humidity values; the second warning condition is determined according to the second historical temperature and humidity values; in the case where the current temperature and humidity values collected by the sensor meet the second warning condition, the warning is given according to the information output by the processor indicating that the outer surface of the window glass is at risk of condensation.

[0084] Specifically, a machine learning-based data processing algorithm is developed, which can dynamically adjust the warning threshold (i.e. the first and second warning conditions) according to historical and real-time data. The algorithm also includes an anomaly detection module that can identify and filter sensor noise through Kalman filtering or median filtering algorithms. This method enhances the adaptability and predictive ability of the system, reducing the likelihood of false positives and false negatives. The efficient performance of the algorithm ensures real-time data processing, maintaining stable performance even in adverse weather conditions.

[0085] In addition, to improve the stability and reliability of the system, in implementation, the sensor, data processing unit and warning module are integrated into a compact system, with a modular design for easy installation and maintenance. The system can also optimize energy consumption management by using intelligent sleep and wake-up mechanisms to reduce power consumption. This design simplifies the installation process, reduces maintenance costs, and improves the stability and reliability of the system. The modular design makes the system easy to upgrade and expand, adapting to future technological developments.

[0086] After the warning, the user can perform defogging operations. The defogging operation method is not limited, such as using the air conditioning and heating system to heat or cool the vehicle interior in advance, changing the temperature difference between the inside and outside of the vehicle and the glass to indirectly eliminate frost or fog on the glass; the vehicle is provided with an air conditioning outlet that can directly blow the front windshield, quickly changing the glass temperature; or equipped with an electrically heated rear window glass, which can be heated in advance according to the warning information.

[0087] However, in order to improve the convenience of early warning, in the implementation, the early warning module is a display screen, and the early warning module performs early warning according to the information output by the processor for indicating that the inner surface of the window glass has a condensation risk, or performs early warning according to the information output by the processor for indicating that the outer surface of the window glass has a condensation risk, including:

[0088] popping up an option of condensation early warning on the outer surface of the window glass on the vehicle central screen, or popping up an option of condensation early warning on the inner surface of the window glass;

[0089] responding to the operation of the user on the option, so as to process the water mist on the inner surface of the window glass or the outer surface of the window glass.

[0090] such as popping up a one-key defrosting and defogging option, the driver can one-key defrosting and defogging, and the operation is convenient. The driver does not need to be distracted to operate the defrosting and defogging equipment, thereby ensuring the safety of driving.

[0091] The window frost or fogging early warning system provided by the present application automatically, quickly, efficiently and conveniently realizes early warning of window frost or fogging. By monitoring the temperature of the window surface, the temperature and humidity inside and outside the vehicle in real time, and analyzing and processing according to the preset threshold value, the present application can trigger an early warning signal before or at the initial stage of window frost or fogging, reminding the driver to take corresponding measures. In this way, the driver can one-key operate defrosting and defogging in advance, improving driving safety.

[0092] Therefore, the window frost or fogging early warning system provided by the present application has the following advantages:

[0093] Automatic monitoring: the system can automatically monitor whether the window has a risk of fogging or frosting, and determine the risk level.

[0094] Quick response: the system can trigger an early warning signal before or at the initial stage of window frost or fogging, improving the response speed.

[0095] Efficient early warning: the system can timely remind the driver to take corresponding measures, improving the early warning efficiency.

[0096] Convenient operation: the driver can one-key defrosting and defogging, and the operation is convenient.

[0097] Through the window frost or fogging early warning system of the present application, the driver can obtain early warning information of window frost or fogging in time, so as to take corresponding measures, improve driving safety, and have good expansibility and adaptability.

[0098] The vehicle window condensation early warning system is described above, and the embodiment also provides a vehicle window condensation early warning method applied to the vehicle window condensation early warning system. The vehicle window condensation early warning system comprises a processor and a sensor system. The sensor system comprises a first temperature and humidity sensor located in a vehicle, a second temperature and humidity sensor located outside the vehicle, a first temperature sensor located on an inner surface of a vehicle window glass, and a second temperature sensor located on an outer surface of the vehicle window glass. The processor is connected with each sensor in the sensor system. The method comprises the following steps.

[0099] acquiring data collected by each sensor;

[0100] outputting information for indicating that the inner surface of the vehicle window glass has a condensation risk in a case where it is detected that a temperature value collected by the first temperature sensor is less than or equal to a first threshold value; wherein the first threshold value is determined by a temperature and humidity conversion coefficient, a temperature value and a humidity value collected by the first temperature and humidity sensor; the temperature and humidity conversion coefficient is used for indicating a temperature adjustment amount caused by humidity change;

[0101] outputting information for indicating that the outer surface of the vehicle window glass has a condensation risk in a case where it is detected that a temperature value collected by the second temperature sensor is less than or equal to a second threshold value; wherein the second threshold value is determined by the temperature and humidity conversion coefficient, a temperature value and a humidity value collected by the second temperature and humidity sensor.

[0102] The vehicle window condensation early warning method provided by the embodiment has the same or corresponding technical features as the vehicle window condensation early warning system described above. The embodiment of the vehicle window condensation early warning system has been described in detail above, and the embodiment of the vehicle window condensation early warning method will not be described again here, and the effects are the same as above.

[0103] In the above embodiment, the vehicle window condensation early warning method is described, and the present application also provides a corresponding embodiment of the vehicle window condensation early warning device. It should be noted that the embodiment of the device part is described from two angles, one is based on the functional module, and the other is based on the hardware.

[0104] The vehicle window condensation early warning device provided by the embodiment comprises the following based on the functional module.

[0105] The acquisition module is configured to acquire data collected by each sensor.

[0106] The first detection and output module is configured to output information for indicating that the inner surface of the vehicle window glass has a condensation risk in a case where it is detected that a temperature value collected by the first temperature sensor is less than or equal to a first threshold value; wherein the first threshold value is determined by a temperature and humidity conversion coefficient, a temperature value and a humidity value collected by the first temperature and humidity sensor; the temperature and humidity conversion coefficient is used for indicating a temperature adjustment amount caused by humidity change.

[0107] The second detecting and outputting module is configured to output information for indicating that the outer surface of the vehicle window glass has a condensation risk when it is detected that the temperature value collected by the second temperature sensor is less than or equal to a second threshold value, wherein the second threshold value is determined by a temperature-humidity conversion coefficient, a temperature value and a humidity value collected by the second temperature and humidity sensor.

[0108] Since the embodiments of the device part correspond to the embodiments of the method part, the embodiments of the device part are described in the description of the embodiments of the method part, and are not described here.

[0109] The vehicle window condensation early warning system and method provided by the present application are described in detail above. The embodiments in the specification are described in a progressive manner, and each embodiment mainly describes the differences from other embodiments. The same or similar parts of each embodiment can be referred to. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to in the method part. It should be pointed out that, for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

[0110] It should be further noted that, in the present specification, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A car window condensation warning system, characterized in that: include: A processor and a sensor system, wherein the sensor system includes a first temperature and humidity sensor located inside the vehicle, a second temperature and humidity sensor located outside the vehicle, a first temperature sensor located on the inner surface of the vehicle window glass, and a second temperature sensor located on the outer surface of the vehicle window glass; The processor is connected to each sensor in the sensor system and is configured to obtain data collected by each sensor; upon detecting that the temperature value collected by the first temperature sensor is less than or equal to a first threshold, outputting information indicating a risk of condensation on the inner surface of the vehicle window glass; wherein the first threshold is determined by a temperature-humidity conversion coefficient, the temperature value collected by the first temperature-humidity sensor, and the humidity value; the temperature-humidity conversion coefficient is configured to indicate an amount of temperature adjustment caused by humidity changes; When it is detected that the temperature value collected by the second temperature sensor is less than or equal to a second threshold, information indicating that there is a risk of condensation on the outer surface of the vehicle window glass is output; wherein the second threshold is determined by the temperature and humidity conversion coefficient, the temperature value and humidity value collected by the second temperature and humidity sensor.

2. The vehicle window condensation warning system according to claim 1, characterized in that: The first temperature and humidity sensor is located on the center console, the lower side of the instrument panel or the vehicle's cabin ventilation duct; the second temperature and humidity sensor is located on the vehicle's external circulation air intake duct, the vehicle's front bumper air intake grille or the back.

3. The vehicle window condensation warning system according to claim 2, characterized in that: Both the first temperature sensor and the second temperature sensor are non-contact sensors.

4. The vehicle window condensation warning system according to claim 2, characterized in that: The sensors are all sensors using micro-electromechanical systems.

5. The vehicle window condensation warning system according to any one of claims 1 to 4, characterized in that: After acquiring the data collected by each sensor and before detecting the relationship between the temperature value collected by the first temperature sensor and the first threshold, or before detecting the relationship between the temperature value collected by the second temperature sensor and the second threshold, the processor further includes: Performing filtering on the data collected by the sensor; wherein the filtering includes at least a Kalman filter algorithm or a median filter algorithm; Detecting a relationship between a temperature value collected by the first temperature sensor and a first threshold, or detecting a relationship between a temperature value collected by the second temperature sensor and a second threshold includes: Acquire a first temperature value obtained by filtering the temperature value collected by the first temperature sensor; detect a relationship between the first temperature value and the first threshold; A second temperature value obtained by filtering the temperature value collected by the second temperature sensor is obtained; and a relationship between the second temperature value and the second threshold is detected.

6. The vehicle window condensation warning system according to claim 5, characterized in that: Determining the first threshold includes: Obtaining a first difference between the saturated humidity value and the humidity value collected by the first temperature and humidity sensor; Obtaining a first ratio between the first difference and the temperature-humidity conversion coefficient; Obtaining a second difference value obtained by subtracting the first ratio from the temperature value collected by the first temperature and humidity sensor; determining the first threshold value according to the second difference; Determining the second threshold includes: Obtaining a third difference between the saturated humidity value and the humidity value collected by the second temperature and humidity sensor; Obtaining a second ratio between the third difference and the temperature-humidity conversion coefficient; Obtaining a fourth difference value obtained by subtracting the second ratio from the temperature value collected by the second temperature and humidity sensor; The second threshold is determined according to the fourth difference.

7. The vehicle window condensation warning system according to claim 5, characterized in that: It also includes an early warning module, which is connected to the processor and is used to issue an early warning based on the information output by the processor to characterize the risk of condensation on the inner surface of the vehicle window glass, or to issue an early warning based on the information output by the processor to characterize the risk of condensation on the outer surface of the vehicle window glass.

8. The vehicle window condensation warning system according to claim 7, characterized in that: The early warning module issues an early warning based on the information output by the processor indicating that there is a condensation risk on the inner surface of the vehicle window glass, or issues an early warning based on the information output by the processor indicating that there is a condensation risk on the outer surface of the vehicle window glass, including: obtaining a first historical temperature value and a first historical humidity value collected by a sensor when condensation occurs on the inner surface of the vehicle window glass; determining a first warning condition based on the first historical temperature value and the first historical humidity value; and issuing a warning based on information output by the processor indicating a risk of condensation on the inner surface of the vehicle window glass when it is detected that the current temperature value and the current humidity value collected by the sensor meet the first warning condition; When condensation occurs on the outer surface of the vehicle window glass, a second historical temperature value and a second historical humidity value collected by the sensor are obtained; a second warning condition is determined based on the second historical temperature value and the second historical humidity value; and when it is detected that the current temperature value and the current humidity value collected by the sensor meet the second warning condition, a warning is issued based on the information output by the processor that indicates that there is a risk of condensation on the outer surface of the vehicle window glass.

9. The vehicle window condensation warning system according to claim 7, characterized in that: The warning module is a display screen, and the warning module issues a warning based on information output by the processor indicating that there is a condensation risk on the inner surface of the vehicle window glass, or issues a warning based on information output by the processor indicating that there is a condensation risk on the outer surface of the vehicle window glass, including: An option to display a pop-up warning on the vehicle's central control screen for condensation on the exterior of the windows or an option to display a pop-up warning for condensation on the interior of the windows; The invention responds to the user's operation of the option so as to process the water fog on the inner surface of the vehicle window glass or the vehicle window surface.

10. A vehicle window condensation warning method, characterized in that: The invention is applied to a vehicle window condensation warning system, the vehicle window condensation warning system comprising: a processor and a sensor system, the sensor system comprising a first temperature and humidity sensor located inside the vehicle, a second temperature and humidity sensor located outside the vehicle, a first temperature sensor located on the inner surface of the vehicle window glass, and a second temperature sensor located on the outer surface of the vehicle window glass; the processor is connected to each sensor in the sensor system; the method comprises: Obtain data collected by each sensor; outputting information indicating a risk of condensation on the inner surface of the vehicle window glass upon detecting that the temperature value collected by the first temperature sensor is less than or equal to a first threshold; wherein the first threshold is determined by a temperature-humidity conversion coefficient, the temperature value collected by the first temperature-humidity sensor, and the humidity value; the temperature-humidity conversion coefficient is used to indicate an amount of temperature adjustment caused by humidity changes; When it is detected that the temperature value collected by the second temperature sensor is less than or equal to a second threshold, information indicating that there is a risk of condensation on the outer surface of the vehicle window glass is output; wherein the second threshold is determined by the temperature and humidity conversion coefficient, the temperature value and humidity value collected by the second temperature and humidity sensor.

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