Vehicle rear windscreen wiper control method, electronic equipment and vehicle

Abstract

The invention provides a control method for a rear windscreen wiper of a vehicle, electronic equipment and the vehicle, and the method comprises the steps: obtaining the opening duration of a back door in response to the detection that the back door of the vehicle is switched from an opening state to a closing state, and determining the target waiting duration and target wiping parameters of the rear windscreen wiper based on the opening duration; and after the target waiting duration, operation of the rear windscreen wiper is controlled according to the target wiping parameters so that accumulated water of the rear window can be cleared away, the method considers that the opening duration of the back door can affect the amount of rainwater accumulated in the rear window, the waiting duration needed by the rear windscreen wiper and the wiping number are determined in real time according to the opening duration, and therefore the cleaning efficiency of the rear windscreen wiper is improved. Rainwater is prevented from being splashed to a user as much as possible when the rear windscreen wiper operates, the situation that the view of the user is limited due to long-time waiting for operation of the rear windscreen wiper is avoided as much as possible, and driving safety of the user is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a control method for a rear wiper of a vehicle, an electronic device and a vehicle. Background Art

[0002] With the continuous development of the automotive industry, many vehicles are equipped with rear wipers to ensure the rear view of the vehicle. During the operation of the rear wiper, if it is detected that the vehicle's back door is open, the rear wiper needs to be suspended to prevent rain or washing liquid from splashing on the user. After the user closes the back door, the timer starts and the wiper resumes operation after the set time is reached.

[0003] However, this method has some problems: if the waiting time after closing the tailgate is fixed, the user's field of vision will be limited during the waiting time, affecting the user's driving safety; and, the time the tailgate is opened and the waiting time after closing the tailgate will affect the amount of rainwater accumulated on the rear glass window. If the original parameters are still used after the timing ends, the user's field of vision may be limited, thus affecting the user's driving safety. Summary of the invention

[0004] In view of this, the purpose of the present application is to propose a control method, electronic device and vehicle for a rear wiper of a vehicle, so as to solve the problem in the prior art that the user's field of vision is limited, thereby affecting the user's driving safety.

[0005] Based on the above purpose, the present application provides a control method for a vehicle rear wiper, comprising:

[0006] In response to detecting that a back door of the vehicle is switched from an open state to a closed state, obtaining an opening time length of the back door;

[0007] Determining a target waiting time and a target wiping parameter of a rear wiper of the vehicle based on the opening time;

[0008] After the target waiting time has elapsed, the operation of the rear wiper is controlled according to the target wiping parameter.

[0009] Optionally, determining a target waiting time and a target wiping parameter of the rear wiper of the vehicle based on the opening time includes:

[0010] In each preset duration interval, the preset duration interval in which the activation duration is located is determined as a candidate duration interval;

[0011] The target waiting time and the target scraping parameter are determined according to the preset waiting time and the preset scraping parameter corresponding to the candidate time interval.

[0012] Optionally, the target wiping parameters include a target wiping rate and a target wiping duration, and determining a target waiting duration and a target wiping parameter of the rear wiper of the vehicle based on the opening duration includes:

[0013] determining a target waiting time of a rear wiper of the vehicle based on the opening time;

[0014] Based on the activation time and the target waiting time, a target wiping speed and a target wiping time of the rear wiper are determined.

[0015] Optionally, the method further includes:

[0016] Determining the current driving scenario of the vehicle;

[0017] After determining the target waiting time and target wiping parameters of the rear wiper of the vehicle based on the opening time, the method further includes:

[0018] At least one of the target waiting time and the target wiping rate is adjusted based on the current driving scenario.

[0019] Optionally, based on the current driving scenario, at least one of the target waiting time and the target scraping rate is adjusted, including:

[0020] When the current driving scene is a parking scene, the target waiting time is increased or the target wiping speed is decreased; or

[0021] When the current driving scene is a reversing scene or a meeting scene, the target waiting time is reduced or the target scraping speed is increased.

[0022] Optionally, the method further comprises:

[0023] Determine the vehicle's current remaining battery power and current wiper motor temperature;

[0024] After determining the target waiting time and target wiping parameters of the rear wiper of the vehicle based on the opening time, the method further includes:

[0025] The target wiping time is adjusted based on the current remaining power and the current wiper motor temperature.

[0026] Optionally, before obtaining the opening time of the back door, the method further includes:

[0027] Acquiring the initial state of the rear wiper before the back door is opened;

[0028] When the initial state is an activated state, obtaining an initial wiping speed of the rear wiper before the back door is opened;

[0029] After controlling the operation of the rear wiper according to the target wiping parameter, the method further includes:

[0030] The rear wiper is controlled to operate at the initial wiping speed.

[0031] Optionally, after acquiring the initial state of the rear wiper, the method further includes:

[0032] When the initial state is an inactive state, obtaining a current wiper gear position of the rear wiper;

[0033] A target wiping speed of the rear wiper is determined based on the current wiper gear position, and the rear wiper is controlled to operate at the target wiping speed.

[0034] Based on the same purpose, an embodiment of the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a method for controlling a rear wiper of a vehicle as provided in any embodiment of the present application is implemented.

[0035] Based on the same purpose, an embodiment of the present application also provides a vehicle, which includes the electronic device provided by any embodiment of the present application.

[0036] As can be seen from the above, the control method of the rear wiper of the vehicle provided by the present application obtains the opening time of the rear door in response to detecting that the rear door of the vehicle is switched from an open state to a closed state, and then determines the target waiting time and target wiping parameters of the rear wiper in the vehicle based on the opening time. After the target waiting time, the operation of the rear wiper is controlled according to the target wiping parameters to achieve the removal of water accumulated on the rear window. The method takes into account that the opening time of the rear door will affect the amount of rainwater accumulated on the rear window. Combined with the characteristic that the shorter the opening time, the less rainwater is accumulated, the waiting time of the rear wiper is determined in real time through the opening time, so as to avoid the rear wiper from splashing rainwater on the user as much as possible, and to avoid the user's field of vision being limited due to waiting for a long time for the rear wiper to operate. In addition, the method determines the wiping parameters of the rear wiper in real time through the opening time, and combines the characteristic that the opening time is related to the accumulated rainwater to dynamically determine the wiping parameters, thereby ensuring the efficiency of rainwater removal, avoiding the limitation of the user's field of vision, and ensuring the user's driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A flow chart of a method for controlling a rear wiper of a vehicle provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of the structure of a control device for a rear wiper of a vehicle provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0042] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] Before introducing in detail the control method for the vehicle rear wiper provided in the embodiment of the present application, the technical problem solved by the method is first described.

[0044] In the prior art, when the rear wiper function is being executed, if it is detected that the user has opened the tailgate, it is usually necessary to immediately stop the rear wiper action, wait for the tailgate to be closed, and then perform the corresponding action after a certain period of time (e.g., 5 seconds) to prevent rain or washing liquid from splashing onto the user from the rear window.

[0045] However, considering that the user's field of vision is limited while waiting for the tailgate to close, if the waiting time is fixed, the user's driving safety may be affected during the waiting time; and, the time the tailgate is opened and the waiting time may affect the amount of rainwater accumulated on the rear window. For example, the longer the opening time, the more rainwater accumulates, and the longer the waiting time, the more rainwater accumulates. If, after waiting for a certain period of time, the rear wiper still operates with the original parameters, the rainwater clearing effect may be poor, thereby limiting the user's field of vision and affecting the user's driving safety. and, if the rear wiper is not turned on before the tailgate is opened, then executing the wiper request after timing for 5 seconds may limit the user's field of vision and affect driving safety.

[0046] Therefore, in order to solve the above problems, an embodiment of the present application provides a control method for a vehicle rear wiper to solve the problem of limited user field of view in the prior art and improve the user's driving safety. Figure 1 A flow chart of a method for controlling a rear wiper of a vehicle provided in an embodiment of the present application. The method can be executed by a control device for the rear wiper of the vehicle, and the device can be integrated into electronic devices such as a vehicle controller by means of hardware and / or software.

[0047] See also Figure 1 , the method comprises the following steps:

[0048] S110 , in response to detecting that a back door of the vehicle is switched from an open state to a closed state, obtaining an opening time length of the back door.

[0049] The back door of the vehicle can be understood as the tailgate or trunk door located at the rear of the vehicle. The back door of the vehicle is equipped with a rear wiper to clear the water on the rear window of the back door. The back door can be a lift-up type, a side-opening type, or a double-opening type, which is not limited in the embodiments of the present application.

[0050] In an embodiment of the present application, if the rear wiper is in an activated state (i.e., the rear wiper function is activated and the rear wiper is working) before the tailgate is opened, then when it is detected that the tailgate is in an open state, the rear wiper of the vehicle is controlled to suspend operation to prevent the rear wiper from clearing accumulated water while the user is using the trunk, causing the accumulated water to splash onto the user next to the tailgate or into the trunk.

[0051] Furthermore, after the back door is in the open state, it can be detected whether the back door is switched from the open state to the closed state, so as to obtain the open time of the back door when it is switched to the closed state. The open time of the back door can be understood as the use time period of the back door, that is, the length of time the back door remains in the open state.

[0052] Specifically, the status flag of the back door can be obtained at a set period, and the status of the back door at each moment can be determined in real time based on the obtained status flag. If the current state of the back door is closed, and the state of the back door at the previous moment was open, it can be determined that the back door is switched from open to closed, that is, the back door is used and the user completes the closing action of the back door, and the opening time of the back door can be obtained at this time.

[0053] Exemplarily, when the back door is first detected to be in the open state, the time when the open state is first detected is recorded in the preset cache space, and then when it is detected that the back door switches from the open state to the closed state, the time when it switches to the closed state is recorded in the preset cache space, and then based on the difference between the two times recorded in the preset cache space, the opening duration of the back door is determined, and after the opening duration is calculated, the preset cache space is cleared to facilitate the subsequent recording of the next time the back door is opened.

[0054] S120: Determine a target waiting time and a target wiping parameter of the rear wiper of the vehicle based on the opening time.

[0055] The target waiting time may be the time period during which the rear wiper waits to work after the back door is switched to the closed state, that is, the length of time for waiting to work. The target wiping parameters may be specific parameters for the rear wiper to continue wiping, such as the target wiping parameters may include a target wiping rate and a target wiping time. The target wiping time may be understood as the duration of wiping at the target wiping rate.

[0056] Specifically, considering that the opening time of the back door is related to the amount of water accumulated on the rear window, for example, the longer the opening time is, the more water will accumulate on the rear window, and the amount of water accumulated on the rear window is different, the target waiting time and the target wiping parameter will also change accordingly. Therefore, in the embodiment of the present application, the target waiting time and the target wiping parameter of the rear wiper can be determined by the opening time.

[0057] For example, the longer the on time is, the more water there is. In order to avoid splashing water on the user when clearing a large amount of water, the longer the target waiting time is determined. At the same time, considering that the user's field of vision will be limited during the time when the rear wiper is waiting to work, the target waiting time can also be limited. The longer the on time is, the more water there is. In order to clear a large amount of water as quickly as possible, the larger the target scraping rate is determined.

[0058] In a specific implementation, determining a target waiting time and a target wiping parameter of a rear wiper of a vehicle based on the opening time includes the following steps:

[0059] Step 11: In each preset duration interval, the preset duration interval where the start duration is located is determined as a candidate duration interval;

[0060] Step 12: Determine the target waiting time and the target scraping parameter according to the preset waiting time and the preset scraping parameter corresponding to the candidate time interval.

[0061] Among them, multiple time intervals can be pre-set, and for each preset time interval, corresponding waiting time and scraping parameters can be set respectively, and then each preset time interval and the corresponding preset waiting time and preset scraping parameters can be stored for subsequent query.

[0062] Specifically, in step 11, the preset duration interval in which the activation duration is located can be determined among various preset duration intervals, and the preset duration interval can be used as a candidate duration interval.

[0063] Furthermore, in step 12, the preset waiting time and preset scraping parameters corresponding to the candidate time interval may be queried, and the queried preset waiting time and preset scraping parameters may be used as the target waiting time and target scraping parameters.

[0064] Exemplarily, multiple preset time intervals may be set, namely (0,2), [2,10), [10,∞), in seconds. If the opening time (i.e., the time period during which the tailgate is kept open) is less than 2 seconds, the opening time is within the preset time interval (0,2), indicating that the amount of water accumulated on the rear window is small at this time. The corresponding preset waiting time may be 3 seconds, i.e., the tailgate is switched to the closed state and the wiper starts to wipe after waiting for 3 seconds. The corresponding preset wiper speed may be 45° / s, i.e., the wiper starts to wipe at 45° / s after waiting for 3 seconds. The corresponding preset wiper time may be 20 seconds, i.e., the wiper starts at 45° / s for 20 seconds.

[0065] If the opening time is not less than 2s and less than 10s, the opening time is within the preset time interval of [2,10), which means that there is a lot of water on the rear window at this time. The corresponding preset waiting time can be 5s, that is, wait 5s after the back door is switched to the closed state to start scraping. The corresponding preset scraping rate can be 70° / s, that is, wait 5s and start scraping at 70° / s. The corresponding preset scraping time can be 20s, that is, scrape at 70° / s for 20s.

[0066] If the opening time is not less than 10s, the opening time is within the preset time interval of [10,∞), which means that there is a lot of water on the rear window at this time. The corresponding preset waiting time can be 5s, that is, wait 5s after the back door is switched to the closed state to start scraping. The corresponding preset scraping rate can be 120° / s, that is, wait 5s and start scraping at 120° / s. The corresponding preset scraping time can be 20s, that is, scrape at 120° / s for 20s.

[0067] Through the above implementation mode, it is realized to determine the target waiting time and the target wiping parameters based on the preset time interval. Different time intervals and corresponding waiting times and wiping parameters can be pre-set according to actual needs, so as to achieve the purpose of flexibly controlling the rear wiper according to the opening time of the back door. While avoiding splashing water onto the user as much as possible, it can also avoid limiting the user's field of vision as much as possible, thereby improving driving safety.

[0068] It should be noted that, taking into account that different vehicle models may have different requirements for the field of vision of the vehicle rear window, different vehicle models can be divided in advance, and preset time intervals under different vehicle models, as well as preset waiting times and preset wiping parameters corresponding to each preset time interval can be set respectively. When it is necessary to query the target waiting time and target wiping parameters, the query can be made in the preset time intervals under the vehicle model according to the vehicle model, which can further improve the user experience while ensuring the user's driving safety.

[0069] In the embodiment of the present application, in addition to querying the corresponding target waiting time and target scraping parameters according to the time interval in which the turn-on time is located, it is considered that in addition to the turn-on time affecting the amount of water accumulation, the target waiting time will also affect the amount of water accumulation. The longer the target waiting time, the greater the amount of water accumulation, and the shorter the target waiting time, the user may still be close to the tailgate. At this time, a scraping rate that is too high may splash water on the user. Therefore, the target waiting time can be determined first, and then the turn-on time and the target waiting time can be combined to determine the target scraping rate and the target scraping time.

[0070] In another specific embodiment, the target wiping parameters include a target wiping rate and a target wiping duration, and the target waiting duration and the target wiping parameters of the rear wiper of the vehicle are determined based on the opening duration, including:

[0071] Step 21: determining a target waiting time of the rear wiper of the vehicle based on the opening time;

[0072] Step 22: Determine a target wiping rate and a target wiping time of the rear wiper based on the on time and the target waiting time.

[0073] Specifically, in step 21, the target waiting time of the rear wiper can be determined by the opening time. Exemplarily, multiple opening times and corresponding waiting times can be preset and stored in association, and then the corresponding target waiting time can be queried according to the opening time. For example, the longer the opening time is, the longer the target waiting time can be determined to avoid splashing the wiper with a lot of accumulated water on the user.

[0074] Furthermore, in step 22, the target wiping speed and target wiping time of the rear wiper can be determined according to the on time and the target waiting time. For example, the sum of the on time and the target waiting time can be calculated to obtain the sum of the time, and then the corresponding target wiping speed and target wiping time can be queried according to the sum of the time, for example, the larger the sum of the time, the higher the target wiping speed and the longer the target wiping time.

[0075] Through the above implementation, the target waiting time can be determined first according to the turn-on time, and then the target scraping rate and target scraping time can be determined in combination with the target waiting time and the turn-on time. The characteristic that both the target waiting time and the turn-on time affect the amount of water accumulation can be considered. When the amount of water accumulation is small, a smaller scraping rate can be used, and when the amount of water accumulation is large, a larger scraping rate can be used to avoid splashing water on the user. At the same time, the user's rear window field of view clarity can also be improved.

[0076] Taking into account that users have different vision requirements in different scenarios, for example, when parking, the user may not need to look at the vehicle behind and has very little demand for rear vision. Therefore, after determining the target waiting time and target wiping parameters, the target waiting time and target wiping parameters can be adjusted based on the driving scenario to make the wiper operation more in line with the user's vision requirements and further avoid splashing water onto the user.

[0077] In one example, the method provided by the embodiment of the present application further includes: determining a current driving scenario of the vehicle;

[0078] After determining the target waiting time and the target wiping parameter of the rear wiper of the vehicle based on the opening time, the method further includes: adjusting at least one of the target waiting time and the target wiping rate based on the current driving scene.

[0079] The current driving scene may be a combination of the driving environment and conditions of the vehicle at the current moment. For example, the current driving scene may be a parking scene, a reversing scene, a meeting scene, a high-speed driving scene, or a low-speed driving scene.

[0080] For example, the current state information of the vehicle may be obtained, and the current driving scene may be identified based on the current state information. For example, the current driving scene may be identified based on the vehicle gear position, vehicle speed, vehicle acceleration, perceived obstacles, etc. in the current state information.

[0081] Specifically, after determining the current driving scenario, the user's rear vision needs can be predicted according to the current driving scenario, and the target waiting time can be adjusted according to the rear needs, or the target scraping rate can be adjusted, or both the target waiting time and the target scraping rate can be adjusted.

[0082] By adjusting the target waiting time and target wiping rate according to the current driving scenario, the operation of the rear wiper can better meet the user's needs for rear vision. At the same time, it can further avoid splashing water onto the user, thereby improving the user experience.

[0083] In some implementations, based on the current driving scenario, at least one of the target waiting time and the target wiping rate is adjusted, including:

[0084] When the current driving scene is a parking scene, the target waiting time is increased or the target scraping speed is decreased; or, when the current driving scene is a reversing scene or a meeting scene, the target waiting time is decreased or the target scraping speed is increased.

[0085] Specifically, if the current driving scene identified is a parking scene, it can be determined that the demand for rear vision is relatively small at this time, and the target waiting time can be increased to provide the user with sufficient time to leave the rear of the vehicle, further avoiding water splashing from the scraper and brush onto the user. Alternatively, the target scraper and brush speed can be lowered to reduce the range of water splashing from the scraper and brush, further avoiding water splashing from the scraper and brush onto the user.

[0086] In addition, if the current driving scene is identified as a reversing scene or a meeting scene, it can be determined that the demand for rear vision is greater at this time, and the target waiting time can be reduced to minimize the user's limited vision caused by waiting. Alternatively, the target scraping rate can be increased to clear water from the rear window as quickly as possible to avoid limiting the user's vision.

[0087] In addition to parking scenarios, reversing scenarios, and meeting scenarios, for other scenarios, such as low-speed driving scenarios, considering that the vehicle has less demand for rear vision in low-speed driving scenarios, the target waiting time can be increased or the target scraping rate can be reduced when the current driving scenario is a low-speed driving scenario.

[0088] Through the above implementation, in scenarios where the rear vision requirement is small, such as parking, the target waiting time can be increased or the target scraping speed can be decreased to further avoid water splashing onto the user by scraping. In scenarios where the rear vision requirement is large, such as reversing or meeting a vehicle, the target waiting time can be decreased or the target scraping speed can be increased to clear water from the rear window as quickly as possible to avoid limiting the user's field of vision.

[0089] In the embodiment of the present application, in addition to adjusting the target waiting time and the target scraping speed according to the current driving scene, the target waiting time and the target scraping speed can also be adjusted according to the number of rear obstacles. For example, if the number of rear obstacles is greater than a preset first threshold, the target waiting time can be reduced or the target scraping speed can be increased; if the number of rear obstacles is less than a preset second threshold, the target waiting time can be increased or the target scraping speed can be reduced, wherein the preset first threshold is greater than the preset second threshold.

[0090] In addition, after determining the target waiting time and the target scraping parameters, in addition to adjusting the target waiting time and the target scraping rate, the target scraping time can also be adjusted. For example, the target scraping time can be appropriately adjusted in combination with the vehicle's cruising range and the temperature of the motor.

[0091] In another example, the method provided by the embodiment of the present application further includes: determining the current remaining power of the vehicle and the current wiper motor temperature;

[0092] After determining the target waiting time and target wiping parameters of the rear wiper of the vehicle based on the opening time, the method further includes: adjusting the target wiping time based on the current remaining power and the current wiper motor temperature.

[0093] Specifically, a request can be sent to the battery management system and the current remaining power fed back by the battery management system can be obtained. At the same time, the temperature of the wiper motor, that is, the current wiper motor temperature, can be collected based on the pre-installed temperature sensor.

[0094] Furthermore, after determining the target waiting time and target wiping parameters of the rear wiper, the target wiping time may be adjusted according to the current remaining power and the current wiper motor temperature.

[0095] For example, if it is detected that the current remaining power is lower than the preset power threshold, it means that the vehicle is insufficient in energy at this time, and the target wiping time can be reduced to save vehicle energy and ensure vehicle endurance; or, if it is detected that the current wiper motor temperature is higher than the preset temperature threshold, it means that the motor temperature is high at this time, and the target wiping time can be reduced to avoid the motor from continuously working in a high temperature environment.

[0096] Through the above example, the target wiping time can be adjusted in combination with the remaining power of the vehicle and the temperature of the wiper motor, which can save vehicle energy, ensure vehicle endurance, and prevent the motor from continuously working in a high temperature environment to avoid motor damage.

[0097] S130: After the target waiting time has elapsed, the operation of the rear wiper is controlled according to the target wiping parameter.

[0098] Specifically, after the target waiting time and the target wiping parameter are obtained, the rear wiper can be controlled according to the target waiting time and the target wiping parameter.

[0099] Exemplarily, when it is detected that the tailgate is switched to a closed state, timing can be started, and in response to the timing duration reaching the target waiting duration, the wipers can be controlled to operate with target wiping parameters, such as controlling the wipers to wipe at a target wiping rate until the wiping duration reaches the target wiping duration.

[0100] In the embodiment of the present application, the main purpose of controlling the operation of the rear wiper according to the target wiping parameters is to quickly clear the rain on the rear window. After quickly clearing the rain, the original wiping rate can be restored to avoid the wiper motor from continuously running at high power.

[0101] In one example, before obtaining the opening time of the back door, the method further includes: obtaining the initial state of the windshield wiper before and after the back door is opened; when the initial state is an activated state, obtaining the initial wiping rate of the windshield wiper before and after the back door is opened;

[0102] After controlling the operation of the rear wiper according to the target wiping parameter, the method further includes: controlling the rear wiper to operate at an initial wiping rate.

[0103] Specifically, in response to detecting an opening action for a tailgate in the vehicle, the operating state of the rear wiper may be recorded as an initial state, and the wiping speed of the rear wiper may be recorded as an initial wiping speed.

[0104] Furthermore, if the detected tailgate switches from an open state to a closed state, the initial state can be obtained and it can be determined whether the initial state is an activated state. If so, it means that the rear wiper function is being executed before the tailgate is opened, and the initial wiping rate can be further obtained at this time.

[0105] Further, after detecting that the time duration for which the rear wiper performs wiping at the target wiping rate reaches the target wiping time duration, the rear wiper may be controlled to perform wiping at the initial wiping rate to restore the original wiping rate.

[0106] Through the above example, the original scraping speed can be restored after the rainwater is quickly cleared, avoiding long-term scraping at a high speed to cause overheating of the motor and thus avoid damage to the motor.

[0107] In the embodiment of the present application, the rear wiper is in an activated state before the back door is opened. In this case, after the back door is closed, the target waiting time and the target wiping parameter can be determined according to the opening time of the back door. However, in the case where the rear wiper is in an inactivated state before the back door is opened, considering that the rear wiper does not work before the back door is opened, if the user waits after the back door is closed, the user's field of vision may be limited, affecting driving safety. Therefore, after the back door is closed, the operation of the wiper can be controlled according to the gear set by the user without waiting.

[0108] In some embodiments, after acquiring the initial state of the rear wiper, the method further includes:

[0109] When the initial state is inactive, obtain the current wiper gear position of the rear wiper;

[0110] A target wiping speed of the rear wiper is determined based on the current wiper gear position, and the rear wiper is controlled to operate at the target wiping speed.

[0111] The current wiper gear may be a gear set by a user, or may be a default gear, such as a high gear, a low gear, or an automatic gear.

[0112] Specifically, if the initial state of the rear wiper is an inactive state before the back door is opened, that is, the rear wiper is not working, this indicates that there may be some water accumulation on the rear window, and the current wiper gear of the rear wiper can be obtained.

[0113] Furthermore, the target wiping rate of the rear wiper can be determined according to the current wiper gear. For example, if the current wiper gear is high gear, the preset rate corresponding to the high gear can be used as the target wiping rate. If the current wiper gear is low gear, the preset rate corresponding to the low gear can be used as the target wiping rate. If the current wiper gear is automatic, the water droplet detection information of the rear window can be obtained, and the target wiping rate is determined based on the water droplet detection information. The higher the water droplet landing amount or landing rate in the water droplet detection information, the greater the target wiping rate.

[0114] After the target wiping speed is obtained, the rear wiper can be directly controlled to wipe at the target wiping speed without waiting. With this embodiment, it is possible to avoid waiting when the rear wiper is not working before the back door is opened, thereby achieving the purpose of clearing water from the rear window in a timely manner, avoiding waiting after the back door is closed to limit the user's field of vision, and improving driving safety.

[0115] The control method for the rear wiper of a vehicle provided in an embodiment of the present application obtains the opening time of the rear door in response to detecting that the rear door of the vehicle switches from an open state to a closed state, and then determines the target waiting time and target wiping parameters of the rear wiper in the vehicle based on the opening time. After the target waiting time, the operation of the rear wiper is controlled according to the target wiping parameters to achieve the removal of water accumulated on the rear window. The method takes into account that the opening time of the rear door will affect the amount of rainwater accumulated on the rear window, and combines the characteristic that the shorter the opening time, the less rainwater is accumulated. The method determines the waiting time of the rear wiper in real time through the opening time, so as to avoid splashing rainwater on the user when the rear wiper is running, and to avoid limiting the user's field of vision due to waiting for a long time for the rear wiper to run. In addition, the method determines the wiping parameters of the rear wiper in real time through the opening time, and combines the characteristic that the opening time is related to the accumulated rainwater to dynamically determine the wiping parameters, thereby ensuring the efficiency of rainwater removal, avoiding limiting the user's field of vision, and ensuring the user's driving safety.

[0116] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0117] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0118] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a control device for a vehicle rear wiper. Figure 2 A schematic diagram of a control device for a rear wiper of a vehicle provided in an embodiment of the present application, referring to Figure 2 The control device for the rear wiper of the vehicle includes an opening time acquisition module 210, a parameter determination module 220 and an operation control module 230, wherein:

[0119] An opening duration acquisition module 210, configured to acquire an opening duration of the rear door in response to detecting that the rear door of the vehicle is switched from an open state to a closed state;

[0120] A parameter determination module 220, configured to determine a target waiting time and a target wiping parameter of the rear wiper of the vehicle based on the opening time;

[0121] The operation control module 230 is used to control the operation of the rear wiper according to the target wiping parameter after the target waiting time has passed.

[0122] In some optional implementations, the parameter determination module 220 is specifically configured to:

[0123] In each preset time interval, the preset time interval where the opening time is located is determined as a candidate time interval; and the target waiting time and the target scraping parameter are determined according to the preset waiting time and the preset scraping parameter corresponding to the candidate time interval.

[0124] In some optional implementations, the target scraping parameters include a target scraping rate and a target scraping duration, and the parameter determination module 220 is specifically used to:

[0125] determining a target waiting time of a rear wiper of the vehicle based on the opening time;

[0126] Based on the activation time and the target waiting time, a target wiping speed and a target wiping time of the rear wiper are determined.

[0127] In some optional embodiments, the start-up time acquisition module 210 is also used to determine the current driving scene of the vehicle; the parameter determination module 220 is also used to adjust at least one of the target waiting time and the target wiping rate based on the current driving scene.

[0128] In some optional embodiments, the parameter determination module 220 is also used to increase the target waiting time or reduce the target wiping rate when the current driving scene is a parking scene; or, when the current driving scene is a reversing scene or a meeting scene, reduce the target waiting time or increase the target wiping rate.

[0129] In some optional embodiments, the start-up time acquisition module 210 is also used to determine the current remaining power of the vehicle and the current wiper motor temperature; the parameter determination module 220 is also used to adjust the target wiping time based on the current remaining power and the current wiper motor temperature.

[0130] In some optional embodiments, the opening duration acquisition module 210 is further used to obtain the initial state of the rear wiper before the tailgate is opened; when the initial state is an activated state, the initial wiping speed of the rear wiper before the tailgate is opened is obtained; the operation control module 230 is further used to control the rear wiper to operate at the initial wiping speed after controlling the operation of the rear wiper according to the target wiping parameters.

[0131] In some optional embodiments, the opening duration acquisition module 210 acquires the current wiper gear position of the rear wiper when the initial state is an inactivated state; the operation control module 230 is further used to determine the target wiping speed of the rear wiper based on the current wiper gear position, and control the rear wiper to operate at the target wiping speed.

[0132] For the convenience of description, the above device is described in terms of functions divided into various modules. Of course, when implementing the present application, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0133] The device of the above embodiment is used to implement the corresponding vehicle rear wiper control method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0134] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the control method for the rear wiper of the vehicle described in any of the above embodiments is implemented.

[0135] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, Figure 3 A specific electronic device hardware structure is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0136] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0137] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0138] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0139] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0140] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0141] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0142] The electronic device of the above embodiment is used to implement the corresponding vehicle rear wiper control method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0143] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the vehicle rear wiper control method as described in any of the above embodiments.

[0144] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, 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, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic 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.

[0145] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the control method of the vehicle rear wiper as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0146] Based on the same inventive concept, corresponding to any of the above embodiments and methods, the present application also provides a vehicle, which includes the electronic device as described in any of the above embodiments.

[0147] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0148] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0149] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0150] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A method for controlling a rear wiper of a vehicle, characterized in that: include: In response to detecting that a back door of the vehicle is switched from an open state to a closed state, obtaining an opening time length of the back door; Determining a target waiting time and a target wiping parameter of a rear wiper of the vehicle based on the opening time; After the target waiting time has elapsed, the operation of the rear wiper is controlled according to the target wiping parameter.

2. The method for controlling a rear wiper of a vehicle according to claim 1, characterized in that: Determining a target waiting time and a target wiping parameter of the rear wiper of the vehicle based on the opening time includes: In each preset duration interval, the preset duration interval in which the activation duration is located is determined as a candidate duration interval; The target waiting time and the target scraping parameter are determined according to the preset waiting time and the preset scraping parameter corresponding to the candidate time interval.

3. The control method of the vehicle rear wiper according to claim 1, characterized in that: The target wiping parameters include a target wiping rate and a target wiping duration. The target waiting duration and the target wiping parameters of the rear wiper of the vehicle are determined based on the opening duration, including: determining a target waiting time of a rear wiper of the vehicle based on the opening time; Based on the activation time and the target waiting time, a target wiping speed and a target wiping time of the rear wiper are determined.

4. The method for controlling a rear wiper of a vehicle according to claim 3, characterized in that: The method further comprises: Determining the current driving scenario of the vehicle; After determining the target waiting time and target wiping parameters of the rear wiper of the vehicle based on the opening time, the method further includes: At least one of the target waiting time and the target wiping rate is adjusted based on the current driving scenario.

5. The control method of the vehicle rear wiper according to claim 4, characterized in that: Based on the current driving scenario, at least one of the target waiting time and the target scraping rate is adjusted, including: When the current driving scene is a parking scene, the target waiting time is increased or the target wiping speed is decreased; or When the current driving scene is a reversing scene or a meeting scene, the target waiting time is reduced or the target scraping speed is increased.

6. The method for controlling a rear wiper of a vehicle according to claim 3, characterized in that: The method further comprises: Determine the vehicle's current remaining battery power and current wiper motor temperature; After determining the target waiting time and target wiping parameters of the rear wiper of the vehicle based on the opening time, the method further includes: The target wiping time is adjusted based on the current remaining power and the current wiper motor temperature.

7. The method for controlling a rear wiper of a vehicle according to claim 1, characterized in that: Before obtaining the opening time of the back door, the method further includes: Acquiring the initial state of the rear wiper before the back door is opened; When the initial state is an activated state, obtaining an initial wiping speed of the rear wiper before the back door is opened; After controlling the operation of the rear wiper according to the target wiping parameter, the method further includes: The rear wiper is controlled to operate at the initial wiping speed.

8. The method for controlling a rear wiper of a vehicle according to claim 6, characterized in that: After acquiring the initial state of the rear wiper, the method further includes: When the initial state is an inactive state, obtaining a current wiper gear position of the rear wiper; A target wiping speed of the rear wiper is determined based on the current wiper gear position, and the rear wiper is controlled to operate at the target wiping speed.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the control method for the vehicle rear wiper according to any one of claims 1 to 8 is implemented.

10. A vehicle, characterized in that: The vehicle includes the electronic device according to claim 9.

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