Method and system for controlling a wiper

Abstract

The application provides a control method and system of a windshield wiper, belonging to the field of intelligent vehicles, and the steps include: determining that it is raining and the vehicle is in a driving state; adjusting the wiping frequency of the windshield wiper according to the rain amount and the driving speed of the vehicle. The wiping frequency of the windshield wiper is positively correlated with the rain amount; and / or, the wiping frequency of the windshield wiper is positively correlated with the driving speed of the vehicle. The present disclosure has a vehicle automatic windshield wiper control system with extremely high reliability, effectively improving the safety of driving in the rain and the reliability of the windshield wiper. The system adjusts the working state of the windshield wiper through intelligent voice interaction, which not only can avoid the trouble of manually adjusting the windshield wiper by the driver, but also can timely adjust the working state according to the needs of the driver to achieve the best user experience.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of intelligent automobiles, and particularly relates to a control method and system for a windshield wiper. BACKGROUND

[0002] With the development of intelligent automobiles, in addition to the user experience of intelligent driving comfort, how to make the user more comfortable to drive safely is also the research direction of development. The windshield wiper of the intelligent automobile in the prior art is still manually adjusted, and the driver needs to manually adjust the movement of the windshield wiper according to the current rainfall, which inevitably interferes with the driving attention and has hidden dangers on the driving behavior, and also has adverse effects on the driving comfort. SUMMARY

[0003] In view of the above problems, the present application provides a control method and system for a windshield wiper, which increases a voice wake-up module, so that the vehicle can automatically adjust the operation of the windshield wiper according to the weather state when driving in the rain, thereby improving the driving comfort and safety of the driver to solve the technical problem that the driver needs to manually adjust the windshield wiper in the prior art.

[0004] To achieve the above purpose, the present application provides a control method for a windshield wiper, comprising:

[0005] determining that it is raining and that the vehicle is in a driving state;

[0006] adjusting the wiping frequency of the windshield wiper according to the rainfall and the driving speed of the vehicle.

[0007] Further, the wiping frequency of the windshield wiper is positively correlated with the rainfall;

[0008] and / or,

[0009] the wiping frequency of the windshield wiper is positively correlated with the driving speed of the vehicle.

[0010] Further, before adjusting the wiping frequency of the windshield wiper according to the rainfall and the driving speed of the vehicle, the method further comprises:

[0011] The system of the present application adjusts the working state of the windshield wiper through intelligent voice interaction, which can eliminate the trouble of manually adjusting the windshield wiper by the driver.

[0012] outputting first voice prompt information, the first voice prompt information prompting the driver to select a windshield wiper working mode, the windshield wiper control mode including a first mode; the first mode is an automatic control mode of the windshield wiper, which can eliminate the trouble of manually operating the windshield wiper by the user, and effectively improve the safety of driving in the rain and the reliability of the windshield wiper.

[0013] In response to the first voice instruction of the driver, the wiper is controlled to enter the first mode.

[0014] Further, the adjustment of the wiping frequency of the wiper according to the rain amount and the driving speed of the vehicle further comprises:

[0015] In response to the second voice instruction of the driver, the wiping frequency of the wiper is adjusted; the working state required by the driver can be adjusted in time to achieve the best user experience.

[0016] Further, after the adjustment of the wiping frequency of the wiper in response to the second voice instruction of the driver, further comprising:

[0017] Output the second voice prompt information, which is used to remind the driver to confirm whether the wiping frequency of the wiper meets the expectation.

[0018] Further, before the adjustment of the wiping frequency of the wiper in response to the second voice instruction of the driver, further comprising:

[0019] Detecting that the rain amount change is greater than or equal to a rain amount change threshold;

[0020] Output the third voice prompt information, which is used to remind the driver to adjust the wiping frequency of the wiper.

[0021] A wiper control system, comprising:

[0022] A voice interaction module outputs voice prompt information, recognizes user voice instructions, converts the voice instructions into control signals, and delivers the control signals to a controller module;

[0023] A rain amount detection module detects rain amount and rain amount change and delivers them to the controller module;

[0024] A vehicle speed detection module detects driving speed and delivers it to the controller module;

[0025] The controller module receives control signals, receives rain amount and rain amount change, receives driving speed, and delivers drive signals to a motor drive module;

[0026] The motor drive module receives drive signals and drives the operation of the motor and the wiper.

[0027] Further, the rain amount detection module comprises a raindrop sensor and a controller;

[0028] The raindrop sensor is used to obtain rain amount and rain amount change data.

[0029] Further, the frequency of the drive signal is directly proportional to the wiping frequency of the wiper.

[0030] Further, the voice interaction module can preset several control voices for recognition and interaction.

[0031] The present application has the following advantages: the automobile automatic wiper control system has high reliability, can avoid the trouble of manual operation of the wiper, and effectively improves the safety of driving in the rain and the reliability of the wiper. The system adjusts the working state of the wiper through intelligent voice interaction, which not only avoids the trouble of manual adjustment of the wiper by the driver, but also adjusts the working state according to the needs of the driver to achieve the best user experience.

[0032] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood by those skilled in the art. The purpose and other advantages of the present application can be achieved and obtained by the structure indicated in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0034] Figure 1 The control system schematic diagram of the wiper in the embodiment of the present application is shown;

[0035] Figure 2 The control method flow chart of the wiper in the embodiment of the present application is shown.

[0036] In the figure, 1-voice interaction module, 2-controller module, 3-motor drive module, 4-motor, 5-wiper, 6-rainfall detection module, 7-vehicle speed detection module. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0038] The present application provides a control method of a wiper, such as Figure 2As shown, the steps include: determining that it is raining and the vehicle is in a driving state; and adjusting the wiping frequency of the windshield wiper according to the amount of rain and the driving speed of the vehicle. The rule method for adjusting the wiping frequency of the windshield wiper is that, when the driving speed of the vehicle remains within a range, the wiping frequency of the windshield wiper is positively correlated with the amount of rain; when the amount of rain in the environment where the vehicle is located is large, the wiping frequency of the windshield wiper is large; and when the amount of rain in the environment where the vehicle is located is small, the wiping frequency of the windshield wiper is small. In particular, when the amount of rain in the environment gradually increases, the wiping frequency of the windshield wiper also gradually increases; and when the amount of rain in the environment gradually decreases, the wiping frequency of the windshield wiper also gradually decreases.

[0039] When the amount of rain in the environment remains within a range, the wiping frequency of the windshield wiper is positively correlated with the driving speed of the vehicle; when the driving speed of the vehicle is large, the wiping frequency of the windshield wiper is large; and when the driving speed of the vehicle is small, the wiping frequency of the windshield wiper is small. In particular, when the driving speed of the vehicle gradually increases, the wiping frequency of the windshield wiper also gradually increases; and when the driving speed of the vehicle gradually decreases, the wiping frequency of the windshield wiper also gradually decreases.

[0040] Before adjusting the wiping frequency of the windshield wiper, the method further includes: outputting first voice prompt information, the first voice prompt information prompting the driver to select a windshield wiper operation mode, the windshield wiper operation mode including a first mode; and in response to a first voice instruction of the driver, controlling the windshield wiper to enter the first mode.

[0041] In particular, before adjusting the wiping frequency of the windshield wiper according to the amount of rain and the driving speed of the vehicle, the working mode of the windshield wiper can be determined, which specifically includes: the intelligent system starts a voice interaction function, and uses voice prompt information to let the driver select a windshield wiper operation mode. In this embodiment, the working mode of the windshield wiper includes an automatic windshield wiper mode and a manual windshield wiper mode. After hearing the voice prompt information, the driver can select the automatic windshield wiper mode according to his actual situation, so that the windshield wiper automatically works and automatically adjusts the working frequency, or select the manual windshield wiper mode to manually control the working condition of the windshield wiper at any time according to his own idea.

[0042] The step of adjusting the wiping frequency of the windshield wiper according to the amount of rain and the driving speed of the vehicle further includes adjusting the wiping frequency of the windshield wiper in response to a second voice instruction of the driver. In particular, the intelligent system continuously starts a voice interaction function, and the driver issues an instruction to the intelligent voice function to adjust the wiping frequency of the windshield wiper according to the amount of rain in the environment where the vehicle is currently located and the driving speed of the vehicle, until the windshield is clear and the driver's field of vision is clear.

[0043] After adjusting the wiping frequency of the windshield wiper in response to the second voice instruction of the driver, the method further includes outputting second voice reminder information, the second voice reminder information being used to remind the driver to confirm whether the wiping frequency of the windshield wiper meets the expectation.

[0044] In particular, after the driver adjusts the wiping frequency of the wiper, the intelligent system also needs to confirm the comfort of the driver. The voice interaction function will ask the driver whether he is satisfied with the wiper frequency adjusted by the intelligent system according to the driver's instruction. If the driver is satisfied, it is considered that the work of adjusting the wiping frequency of the wiper is completed. If the driver is not satisfied, the above adjustment work is repeated.

[0045] In particular, when the driver is not satisfied with the result of adjusting the wiper, the following process is started. Before adjusting the wiping frequency of the wiper in response to the second voice instruction of the driver, the following step is included: detecting that the amount of change in the amount of rain is greater than or equal to the amount of change in the amount of rain threshold; outputting third voice prompt information, the third voice prompt information being used to remind the driver to adjust the wiping frequency of the wiper.

[0046] The intelligent system detects that the amount of change in the amount of rain in the environment where the vehicle is located is greater than or equal to the amount of change in the amount of rain threshold, and the voice interaction function outputs a voice prompt for reminding the driver to adjust the wiping frequency of the wiper.

[0047] The present disclosure provides a wiper control system that allows the wiper 5 to adjust the speed according to the user's voice instruction through intelligent voice interaction until the desired state required by the user is reached. Frequent manual operation and undesirable state of automatic adjustment are avoided. Figure 1 As shown, the system includes a voice interaction module 1, a rain detection module 6, a vehicle speed detection module 7, a controller module 2, a motor drive module 3, a motor 4 and a wiper 5.

[0048] The voice interaction module 1 recognizes the user's voice and converts it into a control signal to the controller module 2. The voice interaction module 1 recognizes the user's voice input and converts the voice input information into a control electrical signal and sends it to the controller module. The voice interaction module 1 is a module that can recognize intelligent voice, and is not fixed to several input control voices. It can recognize and interact with the language for controlling the wiper, and can preset several control voices for recognition and interaction.

[0049] The rain detection module 6 detects the environmental rain information of the vehicle and sends it to the controller module 2; it includes a raindrop sensor and a controller for continuously detecting the environmental rain; the raindrop sensor is used to detect the environmental rain and the rate of change of the environmental rain, and the controller in the raindrop sensor quantitatively converts the detected rain information and converts it into an electrical signal, which is sent to the controller module 2 through the CAN bus.

[0050] When the amount of rain changes, the user is reminded whether to use automatic adjustment of the wiper speed. If the user agrees, the automatic adjustment mode is entered. If the user disagrees, the wiper speed is adjusted again according to the user's instruction.

[0051] The vehicle speed detection module 7 detects the speed information of the vehicle and sends it to the controller module 2. The vehicle speed information is detected, and the detected vehicle state is sent to the controller module 2.

[0052] The controller module 2 receives the control signal, the environmental rainfall information and the speed information, outputs the driving signal to the motor driving module, identifies the rainfall information provided by the rainfall detection module, and outputs the motor PWM control signal to the motor driving module.

[0053] The frequency of the PWM signal can be adjusted. The higher the frequency of the PWM, the faster the working frequency of the wiper. There are two working modes of the wiper. One is the low-speed intermittent mode, in which the controller module realizes low-speed intermittent by controlling the interval time of the PWM signal transmission. The other is the continuous mode, in which the controller module 2 divides the frequency of the PWM from the lowest frequency to the highest frequency, and can realize 0%-100% frequency adjustment.

[0054] The motor driving module 3 receives the driving signal and drives the working of the single motor 4 and the wiper 5. It receives the control information of the controller module 2, converts the control information into an electrical signal that drives the motor to work, and provides the working electrical energy.

[0055] The motor 4 controls the wiper 5 according to the output signal of the motor driving module 3. The frequency of the driving signal is proportional to the frequency of the wiper 5.

[0056] The rainfall detection module 6 includes a raindrop sensor and a controller. The raindrop sensor is used to detect the environmental rainfall and the change of the environmental rainfall of the vehicle. When the rainfall information is detected, the detection information is sent to the controller module 2. The controller module 2 confirms whether the vehicle is in the driving state by accessing the vehicle speed detection module.

[0057] In particular, when the car is not in the driving state or is in the car washing state, the controller module 2 does not output the wiper control instruction. When it is detected that the car is in the driving state, the voice interaction module 1 is turned on to ask the driver whether to keep the manual wiper mode or switch to the automatic wiper control mode. If the intelligent system receives the voice instruction of the user still keeping the manual wiper mode state, it keeps the manual wiper mode; if it receives the switching to the automatic wiper control mode, it switches to the automatic wiper control mode.

[0058] According to the information detected by the rain detection module 6, the controller module 2 will automatically control the wiper operation; as in the automatic wiper control mode, the wiper frequency is slow, the user can issue instructions to the intelligent system through voice. The user can interact with the system through the standard voice instructions such as "increase by 5%" and "speed up a bit" preset in the intelligent system. The voice recognition module recognizes the user's voice and adjusts according to the clear 5% ratio or the software preset step value. The adjusted wiper rate is confirmed with the user, and the frequency is fixed after the user confirms.

[0059] The rain detection module 6 continuously detects the amount of rain in the environment where the vehicle is located, and prompts the user whether to automatically adjust the wiper speed when the amount of rain changes significantly. If the user agrees, the automatic wiper mode is entered, and if the user disagrees, the wiper speed is adjusted according to the user's voice command.

[0060] The controller module 2 accesses the vehicle speed detection module 7 through the CAN bus to confirm whether the vehicle is in driving state. If the car is not in driving state or is in car washing state, the controller module 2 does not output wiper control instructions and does not automatically control the wiper. When

[0061] When the car is detected to be in driving state, the controller module 2 wakes up the voice interaction module 1 through the CAN bus, the voice interaction module 1 prompts the driver to turn on the wiper and asks whether to keep the manual wiper mode or switch to the automatic wiper control mode. If the voice command of manual wiper mode state is received, the manual wiper mode is kept; if the automatic wiper control mode is switched, the automatic wiper control mode is switched, and the automatic wiper control mode automatically adjusts the wiper according to the amount of rain provided by the rain detection module; if the wiper frequency is slow or fast in the automatic wiper control mode, it does not meet the user's ideal state, the user can adjust it through voice, and extract useful information from the voice, adjust according to the voice adjustment ratio or adjustment intention, and keep the current wiper frequency after the user confirms.

[0062] The controller module 2 outputs the motor PWM control signal to the motor drive module 3, and the motor drive module 3 receives the PWM control information of the controller module 2, converts the control information into a driving motor working electrical signal, and provides working power. The frequency of the PWM signal can be adjusted arbitrarily in the range of 0% to 100%, and the minimum step value of the PWM signal frequency, that is, the minimum adjustment unit is 1%. The default step value, that is, the basic adjustment unit is 5%.

[0063] Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood that modifications can be made to the foregoing embodiments, or additional implementations can be implemented, without departing from the spirit and scope of the inventive subject matter. Accordingly, the present application is not limited to the implementations described herein, but is intended to be defined by the claims set forth below, and equivalents thereof.

Claims

1. A control method of a wiper, characterized by, The method comprises: determining that it is raining and the vehicle is in a driving state; adjusting the wiping frequency of the wiper according to the amount of rain and the driving speed of the vehicle; before the step of adjusting the wiping frequency of the wiper according to the amount of rain and the driving speed of the vehicle, the method further comprises: outputting first voice prompt information, the first voice prompt information prompting the driver to select a wiper operation mode, the wiper operation mode including a first mode; in response to a first voice instruction of the driver, controlling the wiper to enter the first mode; the step of adjusting the wiping frequency of the wiper according to the amount of rain and the driving speed of the vehicle further comprises: in response to a second voice instruction of the driver, adjusting the wiping frequency of the wiper; before the step of adjusting the wiping frequency of the wiper according to the second voice instruction of the driver, the method further comprises: detecting that the amount of change in the amount of rain is greater than or equal to an amount-of-change-in-amount-of-rain threshold; outputting third voice reminder information, the third voice reminder information reminding the driver to adjust the wiping frequency of the wiper; after the step of adjusting the wiping frequency of the wiper according to the second voice instruction of the driver, the method further comprises: outputting second voice reminder information, the second voice reminder information reminding the driver to confirm whether the wiping frequency of the wiper meets expectations.

2. The control method of the wiper according to claim 1, characterized by, the wiping frequency of the wiper is positively correlated with the amount of rain; and / or, the wiping frequency of the wiper is positively correlated with the driving speed of the vehicle.

3. A control system for a wiper, characterized in that The control method for the wiper of claim 1 or 2 comprises: a voice interaction module that outputs voice prompt information, identifies user voice instructions, converts the voice instructions into control signals, and delivers the control signals to a controller module; a rain amount detection module that detects the amount of rain and the amount of change in the amount of rain, and delivers the amount of rain and the amount of change in the amount of rain to the controller module; a vehicle speed detection module that detects the driving speed, and delivers the driving speed to the controller module; the controller module that receives the control signals, receives the amount of rain and the amount of change in the amount of rain, receives the driving speed, and delivers a driving signal to a motor drive module; the motor drive module that receives the driving signal, and drives the operation of the motor and the wiper.

4. The control system of the wiper according to claim 3, characterized in that, the rain amount detection module comprises a raindrop sensor and a controller; the raindrop sensor is used to obtain the amount of rain and the amount of change in the amount of rain.

5. The control system of the wiper according to claim 3, characterized in that, the frequency of the driving signal is positively correlated with the wiping frequency of the wiper.

6. The control system of the wiper according to claim 3, characterized in that, the voice interaction module can be preconfigured with a plurality of control voices for identification and interaction.

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