Automatic detection and protection method and device after vehicle wading

Abstract

The invention discloses a vehicle wading automatic detection protection method and device, and the method comprises the steps: obtaining GPS information and weather information, and determining the sensitivity level of a vehicle according to the GPS information and the weather information; acquiring water level data and humidity data, determining a water level threshold value and a humidity threshold value of the vehicle according to the sensitivity level, determining a risk level of the vehicle according to comparison results of the water level data, the humidity data, the water level threshold value and the humidity threshold value, and selecting vehicle protection measures according to the risk level; if the water level sensor is triggered and the water level data is smaller than the water level threshold, determining that the risk level of the vehicle is a low risk level; and if the water level sensor is triggered and the water level data is greater than or equal to the water level threshold, determining the risk level of the vehicle as a medium risk level. Through cross validation of the water level data and the humidity data, false alarm of the vehicle can be effectively prevented, automatic water level detection and protection after the vehicle wades into water can be realized, and irreversible damage to the vehicle is prevented.

Description

Technical Field

[0001] This application relates to the field of automotive protection technology, and in particular to an automatic detection and protection method and device for vehicles after wading through water. Background Technology

[0002] In recent years, extreme weather events have become more frequent, with heavy rains occurring frequently. After heavy rains, roads are often severely flooded, which can easily lead to water damage to car engines. In such cases, if the car owner attempts to start the engine, it will not only cause significant damage to the vehicle but also create major problems for future insurance claims. Summary of the Invention

[0003] The purpose of this application is to provide an automatic detection and protection method and device for vehicles after wading through water, so as to solve the technical problem of low accuracy in existing vehicle water wading protection methods. The various technical effects of the preferred technical solutions provided in this application are detailed below.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] The first aspect of this application provides an automatic detection and protection method for vehicles after wading through water, comprising: acquiring GPS information and weather information; determining a vehicle sensitivity level based on the GPS information and the weather information; acquiring water level data and humidity data; determining a water level threshold and a humidity threshold for the vehicle based on the sensitivity level; determining a vehicle risk level based on a comparison of the water level data and the humidity data with the water level threshold and the humidity threshold; and selecting vehicle protection measures based on the risk level. If a water level sensor is triggered and the water level data is less than the water level threshold, or a humidity sensor is triggered and the humidity data is less than the humidity threshold, then the vehicle risk level is determined to be low risk. If a water level sensor is triggered and the water level data is greater than or equal to the water level threshold, or a humidity sensor is triggered and the humidity data is greater than or equal to the humidity threshold, then the vehicle risk level is determined to be medium risk. If both a water level sensor and a humidity sensor are triggered, then the vehicle risk level is determined to be high risk.

[0006] In some embodiments, the weather information includes rainfall level, the GPS information includes regional information, and determining the vehicle's sensitivity level based on the GPS information and the weather information includes: if the rainfall level is heavy rain or above, the weather sensitivity level is high; if the rainfall level is light rain, moderate rain, or heavy rain, the weather sensitivity level is medium; if the rainfall level is no rain, the weather sensitivity level is low; if the regional information is a rainy region, the GPS sensitivity level is high; if the regional information is a humid or semi-humid region, the GPS sensitivity level is medium; if the regional information is a semi-arid or arid region, the GPS sensitivity level is low; and the vehicle's sensitivity level is determined based on the comparison between the weather sensitivity level and the GPS sensitivity level.

[0007] In some embodiments, the automatic detection and protection method for vehicles after wading through water further includes: pre-setting the sensitivity level of the vehicle.

[0008] In some embodiments, when the sensitivity level is high, the water level threshold is 10 cm and the humidity threshold is 85%; when the sensitivity level is medium, the water level threshold is 15 cm and the humidity threshold is 88%; when the sensitivity level is low, the water level threshold is 20 cm and the humidity threshold is 92%.

[0009] In some embodiments, selecting vehicle protection measures based on the risk level includes: when the vehicle is at the high risk level, forcibly disabling ignition and locking the vehicle's transmission; when the vehicle is at the medium risk level, igniting based on confirmation information; and when the vehicle is at the low risk level, activating an audible and visual alarm.

[0010] In some embodiments, the automatic detection and protection method for vehicles after wading through water further includes: transmitting the water level data and the humidity data via differential signals.

[0011] In some embodiments, the automatic detection and protection method for vehicles after wading through water further includes: using a temperature compensation algorithm to correct the water level data and the humidity data in real time; using a median filtering algorithm to filter the water level data; acquiring the vehicle's IMU data; and performing attitude compensation on the water level data based on the IMU data.

[0012] In some embodiments, the automatic detection and protection method for vehicles after wading through water further includes: if the water level sensor or the humidity sensor malfunctions, determining the risk level of the vehicle based on the non-malfunctioning sensor.

[0013] The second aspect of this application provides an automatic detection and protection device for vehicles after wading through water. This device utilizes the automatic detection and protection method for vehicles after wading through water as described above, and includes a water level sensor, a humidity sensor, an information module, and a control module. The water level sensor is used to acquire water level data; the humidity sensor is used to acquire humidity data; the information module is used to acquire GPS information and weather information, and determine the vehicle's sensitivity level based on the GPS information and the weather information; the control module is used to determine the vehicle's water level threshold and humidity threshold based on the sensitivity level, and determine the vehicle's risk level based on a comparison of the water level data and the humidity data with the water level threshold and the humidity threshold, so that the vehicle can select vehicle protection measures according to the risk level.

[0014] In some embodiments, the water level sensor is an electrode array, and the water level sensor is disposed on the chassis longitudinal beam, intake manifold and / or cockpit floor of the vehicle; the humidity sensor is a capacitive humidity sensor, and the humidity sensor is embedded in the intake manifold.

[0015] Implementing one of the technical solutions described in this application has the following advantages or beneficial effects: In this application, the risk level of a vehicle is determined based on the water level and humidity data detected by sensors, combined with GPS information and weather information, and vehicle protection measures are selected according to the risk level. In this case, this application uses cross-validation of water level and humidity data to effectively prevent false alarms, enabling automatic detection and protection of the vehicle's water level after wading, preventing irreversible damage to the vehicle. Furthermore, by setting sensitivity levels to adapt to environmental changes, this application can improve detection accuracy. In addition, by setting risk levels to determine the degree of wading, this application allows subsequent vehicle protection measures to be more adapted to the vehicle's wading conditions, thereby protecting both the user and the vehicle. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0017] Figure 1 This is a flowchart illustrating the automatic detection and protection method for vehicles after wading through water, according to an embodiment of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, various exemplary embodiments described below will be referenced to the accompanying drawings, which form part of the exemplary embodiments and depict various exemplary embodiments that may be adopted to implement this application. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. It should be understood that they are merely examples of processes, methods, and apparatuses consistent with some aspects of this application disclosed as detailed in the appended claims, and other embodiments may be used, or structural and functional modifications may be made to the embodiments listed herein without departing from the scope and spirit of this application.

[0019] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the referred element must have a specific orientation, or be constructed and operated in a specific orientation. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. The term "multiple" means two or more. The terms "connected" and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, communication connections, direct connections, indirect connections through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more of the related listed items. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] To illustrate the technical solutions described in this application, specific embodiments are provided below, showing only the parts related to the embodiments of this application.

[0021] like Figure 1 As shown, this application provides an automatic detection and protection method for vehicles after wading through water, which may include the following steps (steps S1 to S3):

[0022] S1. Obtain GPS and weather information, and determine the vehicle's sensitivity level based on the GPS and weather information.

[0023] In some embodiments, weather information may include rainfall level, GPS information may include regional information, and determining the vehicle's sensitivity level based on the GPS information and weather information may include: if the rainfall level is heavy rain or above, the weather sensitivity level is high; if the rainfall level is light rain, moderate rain, or heavy rain, the weather sensitivity level is medium; if the rainfall level is no rain, the weather sensitivity level is low; if the regional information is a rainy region, the GPS sensitivity level is high; if the regional information is a humid or semi-humid region, the GPS sensitivity level is medium; if the regional information is a semi-arid or arid region, the GPS sensitivity level is low; and the vehicle's sensitivity level is determined based on the comparison between the weather sensitivity level and the GPS sensitivity level.

[0024] Specifically, the higher of the two sensitivity levels can be set as the vehicle's sensitivity level. For example, if the weather sensitivity level is high and the GPS sensitivity level is medium, then the vehicle's sensitivity level is high. If the two sensitivity levels are the same, either one can be chosen as the vehicle's sensitivity level. The vehicle can obtain local rainfall levels and regional information from the user wirelessly, such as through weather news.

[0025] In some embodiments, the sensitivity level of the vehicle can be preset. This allows users to determine the sensitivity level based on the actual usage of the vehicle.

[0026] S2. Obtain water level and humidity data, determine the vehicle's water level threshold and humidity threshold based on the sensitivity level, determine the vehicle's risk level based on the comparison results of the water level data and humidity data with the water level threshold and humidity threshold, and select vehicle protection measures based on the risk level.

[0027] In some embodiments, when the sensitivity level is high, the water level threshold can be 10 cm and the humidity threshold can be 85%; when the sensitivity level is medium, the water level threshold can be 15 cm and the humidity threshold can be 88%; when the sensitivity level is low, the water level threshold can be 20 cm and the humidity threshold can be 92%.

[0028] In some embodiments, selecting vehicle protection measures based on risk level may include: forcibly disabling ignition and locking the vehicle's transmission when the vehicle is at a high risk level; attempting ignition based on confirmation information when the vehicle is at a medium risk level; and issuing an audible and visual alarm when the vehicle is at a low risk level. Specifically, the user can provide confirmation information to the vehicle by pressing and holding the vehicle's confirmation button to initiate the ignition operation; when the vehicle is at a low risk level, the vehicle can be started normally.

[0029] S3. If the water level sensor is triggered and the water level data is less than the water level threshold, or the humidity sensor is triggered and the humidity data is less than the humidity threshold, the vehicle's risk level is determined to be low risk. If the water level sensor is triggered and the water level data is greater than or equal to the water level threshold, or the humidity sensor is triggered and the humidity data is greater than or equal to the humidity threshold, the vehicle's risk level is determined to be medium risk. If both the water level sensor and the humidity sensor are triggered, the vehicle's risk level is determined to be high risk.

[0030] In some embodiments, the automatic detection and protection method for vehicles after wading through water may further include: transmitting water level data and humidity data via differential signals. This can thus cancel out common-mode interference.

[0031] In some embodiments, the automatic detection and protection method for vehicles after wading through water may further include: using a temperature compensation algorithm to correct water level data and humidity data in real time; using a median filtering algorithm to filter water level data; acquiring vehicle IMU data and performing attitude compensation on water level data based on the IMU data.

[0032] Specifically, a temperature sensor can be integrated, and the signal offset can be corrected in real time through polynomial fitting, as shown in the following formula:

[0033] V corrected =V raw ×(1+αΔT)

[0034] Where α is the temperature drift coefficient and ΔT is the temperature difference.

[0035] Median filtering can effectively remove the impact of water splash pulses, and attitude compensation can enable real-time correction of water level data when the vehicle is in an abnormal state such as tilting. In summary, by processing water level and humidity data, false alarms caused by environmental fluctuations can be prevented.

[0036] In some embodiments, the automatic detection and protection method for vehicles after wading through water may further include: if the water level sensor or the humidity sensor malfunctions, determining the vehicle's risk level based on the non-malfunctioning sensor. For example, if the water level sensor malfunctions, the vehicle's risk level is automatically determined based on the humidity data acquired by the humidity sensor. Specifically, if the humidity sensor triggers and the humidity data is less than a humidity threshold, the vehicle's risk level is determined to be low risk; if the humidity sensor triggers and the humidity data is greater than or equal to the humidity threshold, the vehicle's risk level is determined to be medium risk. In this case, the high risk level in the vehicle's risk level can be canceled, i.e., switching to single-sensor mode. Correspondingly, if the humidity sensor malfunctions, the vehicle's risk level can also be determined according to the above method, which will not be elaborated here.

[0037] This application also relates to an automatic detection and protection device for vehicles after wading through water, which utilizes the automatic detection and protection method for vehicles after wading through water as described in the embodiments of this application.

[0038] In some embodiments, the automatic detection and protection device for vehicles after wading through water may include a water level sensor, a humidity sensor, an information module, and a control module.

[0039] In some embodiments, a water level sensor can be used to acquire water level data; a humidity sensor can be used to acquire humidity data; and an information module can be used to acquire GPS information and weather information, and determine the vehicle's sensitivity level based on the GPS information and weather information.

[0040] In some embodiments, the control module can be used to determine the vehicle's water level threshold and humidity threshold based on the sensitivity level, and to determine the vehicle's risk level based on the comparison results of the water level data and humidity data with the water level threshold and humidity threshold, so that the vehicle can select vehicle protection measures according to the risk level.

[0041] In some embodiments, the water level sensor can be an electrode array, and the water level sensor can be disposed in the vehicle's chassis longitudinal beams, intake manifold, and / or cabin floor. The humidity sensor can be a capacitive humidity sensor, which can be embedded in the intake manifold. Specifically, the electrode array can trigger an early warning based on changes in the conductivity of water, and the capacitive humidity sensor can monitor the air humidity gradient in real time.

[0042] In this application, based on the water level and humidity data detected by sensors, combined with GPS and weather information, the risk level of the vehicle is determined, and vehicle protection measures are selected according to the risk level. In this scenario, the cross-validation of water level and humidity data effectively prevents false alarms, enabling automatic water level detection and protection after a vehicle has been submerged, preventing irreversible damage. Furthermore, by setting sensitivity levels to adapt to environmental changes, the application improves detection accuracy. Additionally, by setting risk levels to determine the degree of submersion, the application ensures that subsequent vehicle protection measures are more tailored to the submersion conditions, thereby protecting both the user and the vehicle.

[0043] Those skilled in the art will understand that all or part of the features / steps of the above-described method embodiments can be implemented by methods, data processing systems, or computer programs. These features may be implemented without hardware, entirely in software, or in a combination of hardware and software. The aforementioned computer program may be stored in one or more computer-readable storage media. When the computer program is executed (e.g., by a processor), it performs the steps of the above-described vehicle wading automatic detection and protection method embodiments.

[0044] The aforementioned storage media capable of storing program code include: static hard disks, solid-state hard disks, random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), optical storage devices, magnetic storage devices, flash memory, magnetic disks or optical disks and / or combinations thereof, that is, they can be implemented by any type of volatile or non-volatile storage devices or combinations thereof.

[0045] This application also provides a processing device embodiment, including one or more processors and a memory; wherein the memory is used to store one or more computer programs, and the one or more processors are used to execute the one or more computer programs stored in the memory, so that the processors execute the features / steps of the above-described automatic detection and protection method embodiment for vehicles after wading through water.

[0046] The above description is merely a preferred embodiment of this application. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this application. Furthermore, under the teachings of this application, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this application. Therefore, this application is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this application.

Claims

1. A method for automatically detecting and protecting a vehicle after wading, characterized by, The method comprises the following steps: acquiring GPS information and weather information, determining the sensitivity level of the vehicle according to the GPS information and the weather information; acquiring water level data and humidity data, determining the water level threshold and the humidity threshold of the vehicle according to the sensitivity level, determining the risk level of the vehicle according to the comparison result of the water level data, the humidity data, the water level threshold and the humidity threshold, and selecting the vehicle protection measure according to the risk level; if the water level sensor is triggered and the water level data is less than the water level threshold, or the humidity sensor is triggered and the humidity data is less than the humidity threshold, the risk level of the vehicle is determined as a low risk level; if the water level sensor is triggered and the water level data is greater than or equal to the water level threshold, or the humidity sensor is triggered and the humidity data is greater than or equal to the humidity threshold, the risk level of the vehicle is determined as a medium risk level; if the water level sensor is triggered and the humidity sensor is triggered, the risk level of the vehicle is determined as a high risk level.

2. The vehicle wading automatic detection protection method according to claim 1, characterized by, The weather information comprises a rainfall level, and the GPS information comprises region information. The sensitivity level of the vehicle is determined according to the comparison result of the weather sensitivity level and the GPS sensitivity level.

3. The vehicle wading detection and protection method of claim 1, wherein, The method further comprises the step of pre-setting the sensitivity level of the vehicle.

4. The vehicle wading detection and protection method of claim 1, wherein When the sensitivity level is high, the water level threshold is 10 cm and the humidity threshold is 85%; when the sensitivity level is medium, the water level threshold is 15 cm and the humidity threshold is 88%; when the sensitivity level is low, the water level threshold is 20 cm and the humidity threshold is 92%.

5. The vehicle wading detection and protection method of claim 1, wherein The vehicle protection measure is selected according to the risk level. When the vehicle is in the high risk level, the ignition is forcibly disabled and the gearbox of the vehicle is locked; when the vehicle is in the medium risk level, the ignition is started according to the confirmation information; when the vehicle is in the low risk level, the vehicle performs sound and light alarm.

6. The vehicle wading detection and protection method of claim 1, wherein The method further comprises the step of transmitting the water level data and the humidity data through differential signals.

7. The vehicle wading detection and protection method of claim 1, wherein The method further comprises the steps of correcting the water level data and the humidity data in real time by using a temperature compensation algorithm, filtering the water level data by using a median filter algorithm, and compensating the water level data according to the IMU data of the vehicle.

8. The vehicle wading detection and protection method of claim 1, wherein The automatic detection and protection method after the vehicle wading also includes: if the water level sensor or the humidity sensor fails, determining the risk level of the vehicle according to the non-failed sensor.

9. A vehicle wading automatic detection protection device that utilizes the vehicle wading automatic detection protection method according to any one of claims 1 to 8, characterized by The vehicle includes a water level sensor, a humidity sensor, an information module and a control module. The water level sensor is used to obtain water level data; the humidity sensor is used to obtain humidity data; the information module is used to obtain GPS information and weather information, and determine the sensitivity level of the vehicle according to the GPS information and the weather information; The control module is used to determine the water level threshold and the humidity threshold of the vehicle according to the sensitivity level, and determine the risk level of the vehicle according to the comparison result of the water level data, the humidity data, the water level threshold and the humidity threshold, so that the vehicle selects the vehicle protection measure according to the risk level.

10. The automatic detection and protection apparatus for a vehicle driving into water according to claim 9, characterized by, The water level sensor is an electrode array, which is arranged on the chassis longitudinal beam, the air intake manifold and / or the cockpit floor of the vehicle; the humidity sensor is a capacitive humidity sensor, which is embedded in the air intake manifold.

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