A vehicle defogging method, device and system

Abstract

The present application discloses a vehicle defog method, device and system. The vehicle defog method comprises: obtaining a manual defog switch control signal; determining whether the manual defog switch control signal is abnormal, and if so, generating a non-manual defog signal and sending it to the defog system for defog. The vehicle defog method of the present application can determine whether the manual defog switch is abnormal, and can automatically perform defog when an abnormality occurs, thereby solving the problem in the prior art that in specific hazardous scenarios, the failure of the electronic and electrical system will cause the unexpected loss of the defog function, thereby affecting the driver's forward field of view and causing serious safety accidents.

Description

Technical Field

[0001] The present application relates to the technical field of automobile defogging, and in particular to a vehicle defogging method, a vehicle defogging device and a vehicle defogging system. Background Art

[0002] With the widespread popularity of vehicles in people's daily travel, vehicle safety issues have also become the focus of consumers' attention. Among them, the driver's forward field of vision, as an important factor affecting driving safety, has also received more and more attention. During the driving process of the vehicle, due to the temperature difference between the inside and outside of the vehicle, the humid air in the car often condenses and adheres to the surface of the front windshield to form fog, affecting the vehicle's forward field of vision. In the past, the defog effect of vehicles was achieved through the manual adjustment combination of the air-conditioning switch. It was necessary to adjust the air-conditioning outlet mode to window blowing, adjust the air volume to the maximum, adjust the circulation mode to external circulation, and start A / C work one by one. These complicated settings greatly affected the driver's driving operation and the defog effect time. Therefore, the one-button defog function came into being. The driver can use the one-button defog button instead of the traditional manual combination operation to quickly eliminate the fog on the front windshield.

[0003] Today, the one-button defog function has gradually become a mainstream standard feature of vehicles. In addition to the manual one-button defog function, the system also predicts fogging by adding temperature sensors inside and outside the vehicle, temperature and humidity sensors inside the vehicle, and other means. When the risk of fogging is detected, the system is turned on in advance. However, with the development of vehicle intelligence and automation, the probability of systematic failure and random hardware failure increases as the functional logic becomes more and more complex. In certain hazardous scenarios, the failure of the electronic and electrical system will lead to the unexpected loss of the defog function, thereby affecting the driver's forward field of vision and causing serious safety accidents.

[0004] Therefore, it is hoped that a technical solution can be provided to solve or at least alleviate the above-mentioned deficiencies of the prior art. Summary of the invention

[0005] The object of the present invention is to provide a vehicle defogging method to solve at least one of the above-mentioned technical problems.

[0006] One aspect of the present invention provides a vehicle defogging method for defogging a vehicle windshield and / or a vehicle rearview mirror, the vehicle defogging method comprising:

[0007] Get the manual defog switch control signal;

[0008] Determine whether the manual defogger switch control signal is abnormal. If so,

[0009] Generate a non-manual defog signal and send it to the defog system for defog.

[0010] Optionally, the vehicle demisting method further comprises:

[0011] Under the preset conditions, the heartbeat signal transmitted by the air conditioning control module is continuously obtained. If the heartbeat signal is lost,

[0012] Generate an alarm signal and pass it to the human-computer interaction module.

[0013] Optionally, the preset condition includes one of the following conditions:

[0014] The first condition: after judging that the manual defogger switch control signal is abnormal and transmitting the non-manual defogger signal to the defogger system;

[0015] The second condition: the defog system is in the process of defoging by controlling the signal through the manual defog switch.

[0016] Optionally, after the alarm signal is generated and transmitted to the human-computer interaction module, the vehicle defogging method further comprises:

[0017] Get the current temperature information in the car;

[0018] Get the current outside temperature information;

[0019] Determine whether the difference between the current in-car temperature information and the in-car temperature information exceeds a threshold value, if not, then

[0020] Get vehicle speed information;

[0021] Determine whether the vehicle speed information exceeds the first vehicle speed threshold, if not, then

[0022] The position information of each window is obtained to determine whether each window is in a closed state. If so, a window control signal is generated to control one or more windows to open.

[0023] Optionally, the vehicle defogging method further comprises:

[0024] Determine whether the difference between the current in-car temperature information and the in-car temperature information exceeds a threshold value, and if so,

[0025] Acquire a car windshield image and / or a car rearview mirror image;

[0026] The degree of fogging of the vehicle is determined based on the visible area of ​​the vehicle windshield image and / or the vehicle rearview mirror image. If the degree of fogging exceeds a preset threshold,

[0027] Acquire the vehicle's forward direction image and / or the vehicle's rearview mirror field of view image captured by the external environment camera device;

[0028] The vehicle forward direction image and / or the vehicle rearview mirror field of view image are transmitted to an in-vehicle display device for display.

[0029] Optionally, after transmitting the vehicle forward direction image and / or the vehicle rearview mirror viewing area image to an in-vehicle display device for display, the vehicle defogging method further comprises:

[0030] Get the current vehicle navigation information;

[0031] Determine whether the current vehicle is on the highway based on the current vehicle navigation information. If so,

[0032] A hazard warning flasher on signal is generated and transmitted to the hazard warning flashers, thereby controlling the operation of the hazard warning flashers.

[0033] Optionally, after transmitting the vehicle forward direction image and / or the vehicle rearview mirror viewing area image to an in-vehicle display device for display, the vehicle defogging method further comprises:

[0034] Determine whether the current vehicle is on the highway based on the current vehicle navigation information. If not,

[0035] Get current vehicle speed information;

[0036] Determine whether the current vehicle speed information exceeds the second vehicle speed threshold, if so, then

[0037] A vehicle speed control signal is generated so that the vehicle speed is adjusted according to the vehicle speed control signal, thereby reducing the vehicle speed to below a second vehicle speed threshold.

[0038] The present application also provides a vehicle defogger device, the vehicle defogger device comprising:

[0039] A manual defog switch control signal acquisition module, the manual defog switch control signal acquisition module is used to acquire a manual defog switch control signal;

[0040] An abnormality judgment module, the abnormality judgment module is used to judge whether the manual defogger switch control signal is abnormal;

[0041] The non-manual defog signal generating module is used to generate a non-manual defog signal and send it to the defog system for defog when the abnormality judging module judges that the signal is negative.

[0042] The present application also provides a vehicle defog system, the vehicle defog system comprising:

[0043] A defog system, wherein the defog system can provide gas to defog the automobile windshield and / or the automobile rearview mirror, thereby removing fog on the automobile windshield and / or the automobile rearview mirror;

[0044] A vehicle defogger device, wherein the vehicle defogger device is the vehicle defogger device as described above, and is used to provide a non-manual defogger signal for the defogger system.

[0045] Optionally, the vehicle defog system further comprises:

[0046] An in-vehicle temperature sensor, the in-vehicle temperature sensor is used to obtain current in-vehicle temperature information, and the in-vehicle temperature sensor is connected to the vehicle defogger;

[0047] An outside temperature sensor for obtaining outside temperature information, and the outside temperature sensor is connected to the vehicle defogger;

[0048] A forward-looking camera device, the forward-looking camera device is mounted on the front bumper of the vehicle, the forward-looking camera device can capture an image of the vehicle's forward direction, and the forward-looking camera device is connected to the vehicle's defogger;

[0049] A camera device for a rearview mirror, the camera device for a rearview mirror being arranged on a left rearview mirror and / or a right rearview mirror and used for capturing an image of a rearview mirror field of view of the vehicle, the camera device for a rearview mirror being connected to the defogger device for the vehicle;

[0050] An in-vehicle display device is connected to the vehicle defogger device.

[0051] Beneficial Effects

[0052] The vehicle defogger method of the present application can determine whether there is an abnormality in the manual defogger switch, and can automatically perform defogger when an abnormality occurs, thereby solving the problem in the prior art that in specific hazardous scenarios, a failure of the electronic and electrical system will cause the unexpected loss of the defogger function, thereby affecting the driver's forward field of view and causing serious safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic flow chart of a vehicle defogging method according to an embodiment of the present application.

[0054] Figure 2 It is a schematic diagram of an electronic device capable of implementing the vehicle defog method of the present application according to an embodiment of the present application. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0056] Figure 1 It is a schematic flow chart of a vehicle defogging method according to an embodiment of the present application.

[0057] The vehicle demisting method of the present application is used for demisting a vehicle windshield and / or a vehicle rearview mirror.

[0058] like Figure 1 The vehicle defogging method shown includes:

[0059] Step 1: Obtain the manual defog switch control signal;

[0060] Step 2: Determine whether the manual defogger switch control signal is abnormal. If so,

[0061] Step 3: Generate a non-manual defog signal and send it to the defog system for defog.

[0062] The vehicle defogger method of the present application can determine whether there is an abnormality in the manual defogger switch, and can automatically perform defogger when an abnormality occurs, thereby solving the problem in the prior art that in specific hazardous scenarios, a failure of the electronic and electrical system will cause the unexpected loss of the defogger function, thereby affecting the driver's forward field of view and causing serious safety accidents.

[0063] In this embodiment, the vehicle defogging method further includes:

[0064] Under the preset conditions, the heartbeat signal transmitted by the air conditioning control module is continuously obtained. If the heartbeat signal is lost,

[0065] Generate an alarm signal and pass it to the human-computer interaction module.

[0066] In this embodiment, the preset condition includes one of the following conditions:

[0067] The first condition: after judging that the manual defogger switch control signal is abnormal and transmitting the non-manual defogger signal to the defogger system;

[0068] The second condition: the defog system is in the process of defoging by controlling the signal through the manual defog switch.

[0069] In the vehicle defogger method of the present application, the present application continuously monitors the manual defogger switch control signal. It can be understood that according to the specific design of the manual defogger switch, different detection devices are used to detect the signal, for example: short-circuit signal or open-circuit detection of capacitive touch buttons, etc. to obtain abnormal signals.

[0070] In this embodiment, when it is detected that the manual defogger switch fails to turn on unexpectedly (i.e., it is abnormal), a non-manual defogger signal is generated and sent to the defogger system for defoggering, so that the defogger system automatically defogs. In this embodiment, the defogger system includes an air-conditioning system, wherein the air-conditioning control module of the air-conditioning system controls the air-conditioning execution module to perform the defogger action according to the vehicle environment.

[0071] In one embodiment, when the manual defog switch is in a normal state, after the driver operates the defog switch, the air conditioning control module determines whether there is a command conflict between the manual defog switch on signal and the non-manual defog signal in a short period of time. If there is no conflict, control is performed according to the current switch signal. If there is a conflict, the air conditioning control module shields the non-manual defog control off command, that is, to avoid the non-manual switch signal continuously sending the defog off signal to affect the normal start of the defog function, the safety demand is allocated to the manual defog switch. When the manual defog switch is in a normal state, the driver can manually trigger the defog function to ensure the safe driving of the vehicle without processing the non-manual defog switch, thereby avoiding cost waste and increased design.

[0072] In this embodiment, when the vehicle meets one of the following two preset conditions, the heartbeat signal transmitted by the air-conditioning control module is continuously acquired. If the heartbeat signal is lost, an alarm signal is generated and transmitted to the human-computer interaction module.

[0073] In this embodiment, in some cases, normal defog may not be possible due to an abnormal control signal of the manual defog switch. In other cases, the manual defog switch control signal may be normal, but there is a problem with the air-conditioning control module, resulting in failure to defog. In this case, an alarm can be sent to the human-machine interaction module to remind the user. The alarm can be a sound alarm or an indicator light alarm.

[0074] In this embodiment, after the alarm signal is generated and transmitted to the human-computer interaction module, the vehicle defogging method further includes:

[0075] Get the current temperature information in the car;

[0076] Get the current outside temperature information;

[0077] Determine whether the difference between the current in-car temperature information and the in-car temperature information exceeds a threshold value, if not, then

[0078] Get vehicle speed information;

[0079] Determine whether the vehicle speed information exceeds the first vehicle speed threshold, if not, then

[0080] The position information of each window is obtained to determine whether each window is in a closed state. If so, a window control signal is generated to control one or more windows to open.

[0081] Generally speaking, the reason for fogging is that when the ambient temperature and humidity change greatly and the temperature difference is large, the glass surface is very likely to frost and fog. When the outside temperature is lower than the temperature inside the car and the air circulation in the car is not smooth, the gas exhaled by the passengers has high humidity. When it encounters the colder windshield, it will condense into small water droplets attached to the inner surface of the windshield, which seriously reduces the transparency of the glass and is not easy to remove. Therefore, the driver's vision is also affected. Therefore, by adjusting the difference between the outside temperature and the temperature inside the car, the fog can be dissipated. However, when the vehicle speed is too high, the noise outside the car is also large, and users often do not want to open the windows. Therefore, through the above judgment, users can be assisted to control the windows when there is a lot of fog to achieve air circulation inside and outside the car, thereby removing the fog.

[0082] In this embodiment, the vehicle defogging method further includes:

[0083] Determine whether the difference between the current temperature information inside the vehicle and the temperature information outside the vehicle exceeds a threshold, and if so, obtain an image of the vehicle windshield and / or a vehicle rearview mirror;

[0084] The degree of fogging of the vehicle is determined based on the visible area of ​​the vehicle windshield image and / or the vehicle rearview mirror image. If the degree of fogging exceeds a preset threshold,

[0085] Acquire the vehicle's forward direction image and / or the vehicle's rearview mirror field of view image captured by the external environment camera device;

[0086] The vehicle's forward direction image and / or the vehicle's rearview mirror field of view image are transmitted to an in-vehicle display device for display.

[0087] In this application, the reason for defogger is that the degree of harm caused by the loss of defogger function is likely to lead to danger. For example, it can be seen from the ASIL (Automotive Safety Integration Level) automotive safety integrity level. ASIL is specified in the ISO 26262 standard and is obtained by conducting hazard analysis and risk assessment of relevant items during the product concept design phase. If the safety risk of the system is greater, the corresponding safety requirement level is higher, and the ASIL level it has is also higher. ASIL is divided into five levels: QM, A, B, C, and D. ASIL D is the highest automotive safety integrity level.

[0088] By analyzing the vehicle hazard of "unexpected loss or reduction of the defogger function affecting the driver's forward field of view", the severity (Severity), exposure rate (Exposure) and controllability (Controllability) are evaluated in the hazard scenario according to the vehicle safety integrity level scoring rules in Table 1. The results are: E2, S3, C2. The final result is determined as ASIL A according to Table 2. The safety goal is to avoid unexpected loss or reduction of the defogger function affecting the driver's forward field of view.

[0089] Table 1:

[0090]

[0091] Table 2:

[0092]

[0093] It can be seen from Tables 1 and 2 that vehicle fog may directly lead to accidents, especially in certain special sections (for example, on highways, due to the high speed, even if you cannot see clearly for a short time, it may lead to the possibility of rear-end collision or forgetting to exit the highway, especially if you cannot see the road signs clearly). As described in the present application, fog is mainly caused by temperature difference. The present application can directly transmit the vehicle's forward direction image and / or the vehicle's rearview mirror field of view image to the in-vehicle display device (such as a liquid crystal screen). Even if you cannot see the windshield clearly, you can still see the road ahead clearly. This can be used as an emergency in a short time. When the driver realizes it, he can stop the car or use other methods to eliminate the fog, thereby reducing the hidden dangers of danger.

[0094] In this embodiment, the camera devices for acquiring the vehicle's forward direction image and / or the vehicle's rearview mirror field of view image are all arranged outside the vehicle, so there will be no temperature difference problem, and thus no fog interference, allowing the user to see the road clearly.

[0095] In this embodiment, after the vehicle forward direction image and / or the vehicle rearview mirror viewing area image are transmitted to the in-vehicle display device for display, the vehicle defogging method further includes:

[0096] Get the current vehicle navigation information;

[0097] Determine whether the current vehicle is on the highway based on the current vehicle navigation information. If so,

[0098] A hazard warning flasher on signal is generated and transmitted to the hazard warning flashers, thereby controlling the operation of the hazard warning flashers.

[0099] In some cases, since the user cannot see the road clearly, he may make an operating error, causing the vehicle to move erratically, and the pedestrians or vehicles behind are unaware. At this time, by automatically generating hazard warning flashers (such as the vehicle's double flash lights), the rear can be informed that there is a problem with the vehicle in front, allowing the rear vehicle to maintain a safe distance.

[0100] In this embodiment, after the vehicle forward direction image and / or the vehicle rearview mirror viewing area image are transmitted to the in-vehicle display device for display, the vehicle defogging method further includes:

[0101] Determine whether the current vehicle is on the highway based on the current vehicle navigation information. If not,

[0102] Get current vehicle speed information;

[0103] Determine whether the current vehicle speed information exceeds the second vehicle speed threshold, if so, then

[0104] A vehicle speed control signal is generated so that the vehicle speed is adjusted according to the vehicle speed control signal, thereby reducing the vehicle speed to below a second vehicle speed threshold.

[0105] When driving on a highway, the vehicle speed may be very high, but the fog may cause the user to operate slower than the actual speed. For example, there is a vehicle 100 meters ahead of the application, but it is not seen clearly due to the fog, and by the time the user can see it clearly, it is already very close, making it easy to rear-end a car. Therefore, in this case, the vehicle speed needs to be reduced, but the user may not have realized it at this time. Through the application, the vehicle speed can be automatically reduced to an appropriate level. For example, the second threshold is 80 kilometers per hour, and the first threshold can be 100 kilometers per hour. It can be understood that the first threshold and the second threshold can be adjusted as needed.

[0106] In this embodiment, the following method can be used to judge the degree of fogging of the vehicle based on the visible area of ​​the vehicle windshield image and / or the vehicle rearview mirror image:

[0107] An image including a car windshield or rearview mirror is collected; the coordinates of each pixel point of the image corresponding to the car windshield or rearview mirror are obtained to obtain an initial pixel grayscale map of the car window glass, wherein the initial grayscale value of each pixel point of the initial pixel grayscale map is a grayscale value representing that the glass is not visible; through image collection and image processing, the present application can obtain the grayscale value of each pixel point of the image at different times, and since the grayscale value is related to the visibility of the glass, the visible boundary can be identified according to the initial grayscale value of each pixel point and the grayscale value at different times, and then the present application can determine the visible area ratio according to the area surrounded by the visible boundary and the area of ​​the image. When the ratio is less than a preset value, it is considered that the visibility is low.

[0108] It is understandable that the judgment can also be made based on a neural network, that is, an image of the car windshield or rearview mirror is obtained, and then the image features are extracted and then input into a trained classifier to obtain the result of whether the glass is fogged.

[0109] The present application also provides a vehicle defogger device, which includes a manual defogger switch control signal acquisition module, an abnormality judgment module and a non-manual defogger signal generation module. The manual defogger switch control signal acquisition module is used to acquire the manual defogger switch control signal; the abnormality judgment module is used to judge whether the manual defogger switch control signal is abnormal; and the non-manual defogger signal generation module is used to generate a non-manual defogger signal and send it to the defogger system for defogger when the abnormality judgment module judges as no.

[0110] The vehicle defogger method of the present application can determine whether there is an abnormality in the manual defogger switch, and can automatically perform defogger when an abnormality occurs, thereby solving the problem in the prior art that in specific hazardous scenarios, a failure of the electronic and electrical system will cause the unexpected loss of the defogger function, thereby affecting the driver's forward field of view and causing serious safety accidents.

[0111] The present application also provides a vehicle defogger system, which includes a defogger system and a vehicle defogger device. The defogger system can provide gas to defog the vehicle windshield and / or the vehicle rearview mirror, thereby removing fog on the vehicle windshield and / or the vehicle rearview mirror; the vehicle defogger device is the vehicle defogger device as described above, which is used to provide a non-manual defogger signal for the defogger system.

[0112] In this embodiment, the vehicle defogger system further includes an in-vehicle temperature sensor, an outside temperature sensor, a front-view camera device, a rearview mirror camera device and an in-vehicle display device. The in-vehicle temperature sensor is used to obtain current in-vehicle temperature information, and the in-vehicle temperature sensor is connected to the vehicle defogger; the outside temperature sensor is used to obtain outside temperature information, and the outside temperature sensor is connected to the vehicle defogger; the front-view camera device is installed on the front bumper of the vehicle, and the front-view camera device can capture an image of the vehicle's forward direction, and the front-view camera device is connected to the vehicle defogger; the rearview mirror camera device is arranged on the left rearview mirror and / or the right rearview mirror, and is used to capture an image of the vehicle's rearview mirror field of view, and the rearview mirror camera device is connected to the vehicle defogger; the in-vehicle display device is connected to the vehicle defogger.

[0113] It can be understood that the above description of the method is also applicable to the description of the device.

[0114] The present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the above-mentioned vehicle defogging method is implemented when the processor executes the computer program.

[0115] The present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it can implement the above-mentioned vehicle defogging method.

[0116] Figure 2 It is an exemplary structural diagram of an electronic device capable of implementing the vehicle defog method provided according to an embodiment of the present application.

[0117] like Figure 2 As shown, the electronic device includes an input device 501, an input interface 502, a central processor 503, a memory 504, an output interface 505, and an output device 506. The input interface 502, the central processor 503, the memory 504, and the output interface 505 are interconnected through a bus 507, and the input device 501 and the output device 506 are connected to the bus 507 through the input interface 502 and the output interface 505, respectively, and then connected to other components of the electronic device. Specifically, the input device 504 receives input information from the outside, and transmits the input information to the central processor 503 through the input interface 502; the central processor 503 processes the input information based on the computer executable instructions stored in the memory 504 to generate output information, temporarily or permanently stores the output information in the memory 504, and then transmits the output information to the output device 506 through the output interface 505; the output device 506 outputs the output information to the outside of the electronic device for use by the user.

[0118] That is to say, Figure 2 The electronic device shown can also be implemented as comprising: a memory storing computer executable instructions; and one or more processors, which can implement the combination when executing the computer executable instructions. Figure 1 A demisting method for a vehicle is described.

[0119] In one embodiment, Figure 2 The electronic device shown may be implemented to include: a memory 504 configured to store executable program codes; and one or more processors 503 configured to run the executable program codes stored in the memory 504 to execute the vehicle defog method in the above-mentioned embodiment.

[0120] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0121] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0122] Computer readable media include permanent and non-permanent, removable and non-removable, and the media can be implemented by any method or technology to store information. The information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), data versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0123] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0124] In addition, it is obvious that the word "comprising" does not exclude other units or steps. Multiple units, modules or devices stated in the device claim can also be implemented by one unit or the overall device through software or hardware.

[0125] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and a module, a program segment or a part of a code includes one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes identified in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or the total flow chart can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0126] The processor referred to in this embodiment may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0127] The memory can be used to store computer programs and / or modules. The processor realizes various functions of the device / terminal equipment by running or executing the computer programs and / or modules stored in the memory and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0128] In this embodiment, if the module / unit integrated in the device / terminal equipment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. Although the present application is disclosed as above in terms of a preferred embodiment, it is not intended to limit the present application. Any technical personnel in this field may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

[0129] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0130] In addition, it is obvious that the word "comprising" does not exclude other units or steps. Multiple units, modules or devices stated in the device claim can also be implemented by one unit or the overall device through software or hardware.

[0131] Although the present invention has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made thereto based on the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection claimed by the present invention.

Claims

1. A vehicle defogging method, used for defogging a vehicle windshield and / or a vehicle rearview mirror, characterized in that: The vehicle defogging method comprises: Get the manual defog switch control signal; Determine whether the manual defogger switch control signal is abnormal. If so, Generate a non-manual defog signal and send it to the defog system for defog; The vehicle defogging method further comprises: Under the preset conditions, the heartbeat signal transmitted by the air conditioning control module is continuously obtained. If the heartbeat signal is lost, Generate alarm signal and transmit it to human-computer interaction module; The preset condition includes one of the following conditions: The first condition: after judging that the manual defogger switch control signal is abnormal and transmitting the non-manual defogger signal to the defogger system; The second condition: the defog system is in the process of defogging by the manual defog switch control signal; After the alarm signal is generated and transmitted to the human-computer interaction module, the vehicle defogging method further includes: Get the current temperature information in the car; Get the current outside temperature information; Determine whether the difference between the current in-car temperature information and the in-car temperature information exceeds a threshold value, if not, then Get vehicle speed information; Determine whether the vehicle speed information exceeds the first vehicle speed threshold, if not, then Get the position information of each window and determine whether each window is closed. If so, Generate a window control signal to control one or more windows to open; The vehicle defogging method further comprises: Determine whether the difference between the current in-car temperature information and the in-car temperature information exceeds a threshold value, and if so, Acquire a car windshield image and / or a car rearview mirror image; The degree of fogging of the vehicle is determined based on the visible area of ​​the vehicle windshield image and / or the vehicle rearview mirror image. If the degree of fogging exceeds a preset threshold, Acquire the vehicle's forward direction image and / or the vehicle's rearview mirror field of view image captured by the external environment camera device; Transmitting the vehicle's forward direction image and / or the vehicle's rearview mirror viewing area image to an in-vehicle display device for display; After transmitting the vehicle forward direction image and / or the vehicle rearview mirror viewing area image to an in-vehicle display device for display, the vehicle defogging method further comprises: Get the current vehicle navigation information; Determine whether the current vehicle is on the highway based on the current vehicle navigation information. If so, Generate a hazard warning flasher on signal and transmit it to the hazard warning flasher, thereby controlling the hazard warning flasher to operate; After transmitting the vehicle forward direction image and / or the vehicle rearview mirror viewing area image to an in-vehicle display device for display, the vehicle defogging method further comprises: Determine whether the current vehicle is on the highway based on the current vehicle navigation information. If not, Get current vehicle speed information; Determine whether the current vehicle speed information exceeds the second vehicle speed threshold, if so, then A vehicle speed control signal is generated so that the vehicle speed is adjusted according to the vehicle speed control signal, thereby reducing the vehicle speed to below a second vehicle speed threshold.

2. A vehicle defogging device, used in the vehicle defogging method according to claim 1, characterized in that: The vehicle defogger device comprises: A manual defog switch control signal acquisition module, the manual defog switch control signal acquisition module is used to acquire a manual defog switch control signal; An abnormality judgment module, the abnormality judgment module is used to judge whether the manual defogger switch control signal is abnormal; The non-manual defog signal generating module is used to generate a non-manual defog signal and send it to the defog system for defog when the abnormality judging module judges that the signal is negative.

3. A vehicle defog system, characterized in that: The vehicle defog system comprises: A defog system, wherein the defog system can provide gas to defog the automobile windshield and / or the automobile rearview mirror, thereby removing fog on the automobile windshield and / or the automobile rearview mirror; A vehicle defogger device, wherein the vehicle defogger device is the vehicle defogger device as claimed in claim 2, and is used to provide a non-manual defogger signal for the defogger system.

4. The vehicle defog system according to claim 3, characterized in that: The vehicle defog system further comprises: An in-vehicle temperature sensor, the in-vehicle temperature sensor is used to obtain current in-vehicle temperature information, and the in-vehicle temperature sensor is connected to the vehicle defogger; An outside temperature sensor for obtaining outside temperature information, and the outside temperature sensor is connected to the vehicle defogger; A forward-looking camera device, the forward-looking camera device is mounted on the front bumper of the vehicle, the forward-looking camera device can capture an image of the vehicle's forward direction, and the forward-looking camera device is connected to the vehicle's defogger; A camera device for a rearview mirror, the camera device for a rearview mirror being arranged on a left rearview mirror and / or a right rearview mirror and used for capturing an image of a rearview mirror field of view of the vehicle, the camera device for a rearview mirror being connected to the defogger device for the vehicle; An in-vehicle display device is connected to the vehicle defogger device.

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