Scraping brush control method, device and equipment

Abstract

The present invention provides a wiper control method, device, and apparatus relating to the automotive field. The method comprises: obtaining rainfall information detected by a rain sensor; initiating dynamic rainfall determination of the rainfall information detected by the rain sensor when the current rainfall value is determined to have reached a first threshold based on the rainfall information; and transmitting a wiper activation command when the dynamic rainfall information within a preset time period satisfies a preset condition. In embodiments of the present invention, the wiper is activated when dynamic rainfall determination indicates light rain, thereby preventing accumulation of raindrops and slow wiping.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a method, device and equipment for controlling a scraper. Background Art

[0002] With the development of technology, cars are equipped with more and more automatic functions. Among them, the automatic wiper function brings a lot of convenience to users. The vehicle uses a rain sensor to detect raindrops and automatically turns on the wipers. The rain sensor can also detect the size of raindrops and automatically adjust the wiper speed, providing users with a good field of view, thereby greatly improving the convenience and safety of driving in rainy days.

[0003] At present, most rain sensors use the method of collecting rainfall differential signals. The differential signal has high sensitivity. In order to avoid accidental scraping of the vehicle when interfered by external light signals, the scraping threshold of the scraper is set relatively high.

[0004] However, since the windshield wiping threshold is set high, when the rainfall is very light, the rainfall value cannot reach the windshield wiping threshold, resulting in raindrop accumulation and slow windshield wiping. Summary of the Invention

[0005] The purpose of the present invention is to provide a scraper control method, device and equipment for solving the problem that when the rainfall is very light, the rainfall value cannot reach the scraper starting threshold, resulting in raindrop accumulation and slow scraping.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a method for controlling a scraper, the method comprising:

[0007] Obtain rainfall information detected by the rain sensor;

[0008] In the case where it is determined according to the rainfall information that the current rainfall value reaches a first threshold, dynamic rainfall determination of the rainfall information detected by the rain sensor is initiated;

[0009] When it is determined that the dynamic rainfall of the rainfall information within the preset time period meets the preset conditions, a wiper start instruction is sent.

[0010] Optionally, the method further includes:

[0011] When it is determined that the dynamic rainfall of the rainfall information within the preset time period does not meet the preset condition, the dynamic rainfall determination is stopped.

[0012] Optionally, the method further includes:

[0013] When it is determined according to the rainfall information that the current rainfall value reaches a second threshold, sending a wiper start instruction;

[0014] The second threshold is greater than the first threshold.

[0015] Optionally, the step of starting dynamic rainfall determination of rainfall information detected by the rain sensor includes:

[0016] Collecting rainfall information once every preset period and obtaining a differential value of the rainfall information;

[0017] If the difference between the two adjacent rainfall information values ​​is of opposite positive and negative values, a valid determination is recorded; if the difference between the two adjacent rainfall information values ​​is of the same positive and negative values, an invalid determination is recorded;

[0018] According to the number of valid determinations and the number of invalid determinations obtained by statistics within the preset time period, it is determined whether the dynamic rainfall of the rainfall information within the preset time period meets the preset condition.

[0019] Optionally, judging whether the dynamic rainfall of the rainfall information within the preset time period meets a preset condition based on the number of valid determinations and the number of invalid determinations obtained by statistics within the preset time period includes:

[0020] If, within the preset time period, the number of valid determinations is greater than or equal to a first preset number, and the number of consecutively obtained invalid determinations is less than a second preset number, it is determined that the dynamic rainfall of the rainfall information meets the preset condition.

[0021] Optionally, the method further includes:

[0022] After obtaining the differential value of the rainfall information, determining whether the absolute value of the differential value of the rainfall information is greater than a third threshold; wherein the third threshold is less than the first threshold;

[0023] When the absolute value of the difference value of the rainfall information is greater than the third threshold, the difference value of the currently obtained rainfall information is compared with the difference value of the rainfall information obtained once adjacently to determine whether the difference values ​​of the rainfall information of the two adjacent times are opposite in positive and negative values.

[0024] An embodiment of the present invention further provides a control device for a scraper, the device comprising:

[0025] An information acquisition module is used to obtain rainfall information detected by a rain sensor;

[0026] Rainfall determination module, used for dynamic rainfall determination;

[0027] The control module is used to start the dynamic rainfall determination of the rainfall information detected by the rain sensor when it is determined that the current rainfall value reaches a first threshold value based on the rainfall information; and send a wiper start instruction when it is determined that the dynamic rainfall of the rainfall information within a preset time period meets a preset condition.

[0028] Optionally, the rainfall determination module includes:

[0029] An information collection unit, configured to collect rainfall information once every preset period during the dynamic rainfall determination;

[0030] An information processing unit is used to obtain the differential value of the rainfall information; when the differential values ​​of the rainfall information of two adjacent times are opposite in positive and negative values, record a valid judgment; when the differential values ​​of the rainfall information of two adjacent times are the same in positive and negative values, record an invalid judgment.

[0031] An embodiment of the present invention also provides a control device, comprising: a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein the processor is configured to read the program in the memory and execute the scraping control method as described in any one of the above items.

[0032] At least one of the above technical solutions of the present invention has the following beneficial effects:

[0033] The wiper control method described in the embodiment of the present invention is adopted. When it is determined that the current rainfall value reaches a first threshold value based on the rainfall information, the dynamic rainfall determination of the rainfall information detected by the rain sensor is started. Within a preset time period, when the dynamic rainfall of the rainfall information meets the preset conditions, the wiper is automatically turned on. Therefore, when it rains lightly, the wiper is automatically turned on to avoid the problem of raindrop accumulation and slow scraping. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic flow chart of a method for controlling a scraper provided in an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of a process for implementing the method according to an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the device structure provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention and not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] like Figure 1 As shown, an embodiment of the present invention provides a method for controlling a scraper, the control method comprising:

[0039] Step S1, obtaining rainfall information detected by a rain sensor;

[0040] Step S2, when it is determined that the current rainfall value reaches a first threshold value according to the rainfall information, dynamic rainfall determination of the rainfall information detected by the rainfall sensor is initiated;

[0041] Step S3: When it is determined that the dynamic rainfall of the rainfall information within the preset time period meets the preset conditions, a wiper start instruction is sent.

[0042] In the above-described embodiment of the present invention, rainfall information detected by a rain sensor is obtained. When it is determined based on the rainfall information that the current rainfall value has reached a first threshold, dynamic rainfall determination based on the rainfall information detected by the rain sensor is initiated. If the dynamic rainfall information satisfies a preset condition within a preset time period, the wiper is activated. If the dynamic rainfall determination indicates that light rain is falling, the wiper is activated to avoid the problem of raindrop accumulation and slow wiper operation.

[0043] Optionally, the method further includes:

[0044] When it is determined that the dynamic rainfall of the rainfall information within the preset time period does not meet the preset condition, the dynamic rainfall determination is stopped.

[0045] In the above embodiment of the present invention, if the dynamic rainfall information does not meet the preset conditions within the preset time period, the dynamic rainfall determination is stopped, thereby eliminating static signal interference and effectively avoiding miswiping.

[0046] Optionally, the method further includes:

[0047] When it is determined according to the rainfall information that the current rainfall value reaches a second threshold, sending a wiper start instruction;

[0048] The second threshold is greater than the first threshold.

[0049] In the above embodiment of the present invention, when the rainfall value reaches the second threshold, the wipers are directly turned on, providing the user with a good field of vision on rainy days, thereby greatly improving the convenience and safety of driving on rainy days.

[0050] Optionally, the step of starting dynamic rainfall determination of rainfall information detected by the rain sensor includes:

[0051] Collecting rainfall information once every preset period and obtaining a differential value of the rainfall information;

[0052] If the difference between the two adjacent rainfall information values ​​is of opposite positive and negative values, a valid determination is recorded; if the difference between the two adjacent rainfall information values ​​is of the same positive and negative values, an invalid determination is recorded;

[0053] According to the number of valid determinations and the number of invalid determinations obtained by statistics within the preset time period, it is determined whether the dynamic rainfall of the rainfall information within the preset time period meets the preset condition.

[0054] In the above-described embodiment of the present invention, the characteristics of differential signal acquisition are utilized, and the acquisition cycle is calibrated according to actual operating conditions. Rainfall information is collected once every such acquisition cycle, so that, when subject to static interference, the positive and negative values ​​of the differential values ​​of two adjacent rainfall information are the same; when subject to dynamic rainfall interference, in most cases, the positive and negative values ​​of the differential values ​​of two adjacent rainfall information are opposite. If the positive and negative values ​​of the differential values ​​of two adjacent rainfall information are opposite, a valid judgment is recorded; if the positive and negative values ​​of the differential values ​​of two adjacent rainfall information are the same, an invalid judgment is recorded. Based on the number of valid judgments and invalid judgments obtained statistically within a preset time period, it is determined whether the dynamic rainfall information within the preset time period meets the preset conditions. This can identify light rain, promptly activate the wiper, eliminate static interference, and effectively prevent accidental wipes.

[0055] Optionally, judging whether the dynamic rainfall of the rainfall information within the preset time period meets a preset condition based on the number of valid determinations and the number of invalid determinations obtained by statistics within the preset time period includes:

[0056] If, within the preset time period, the number of valid determinations is greater than or equal to a first preset number, and the number of consecutively obtained invalid determinations is less than a second preset number, it is determined that the dynamic rainfall of the rainfall information meets the preset condition.

[0057] In the above embodiment of the present invention, a preset condition is provided. When the dynamic rainfall information satisfies the preset condition, the wiper is automatically turned on.

[0058] For example, if the number of valid determinations is greater than or equal to 4 times within 6 seconds, and the number of invalid determinations obtained consecutively is less than 3 times, it is determined that the preset conditions are met and the wiper is automatically turned on.

[0059] Optionally, the method further includes:

[0060] After obtaining the differential value of the rainfall information, determining whether the absolute value of the differential value of the rainfall information is greater than a third threshold; wherein the third threshold is less than the first threshold;

[0061] When the absolute value of the difference value of the rainfall information is greater than the third threshold, the difference value of the currently obtained rainfall information is compared with the difference value of the rainfall information obtained once adjacently to determine whether the difference values ​​of the rainfall information of the two adjacent times are opposite in positive and negative values.

[0062] In the above-mentioned embodiment of the present invention, in order to avoid the situation where the rainfall value reaches the first threshold due to other circumstances when there is no rain, thereby causing erroneous scraping, after obtaining the differential value of the rainfall information, it is necessary to make another judgment to determine whether the absolute value of the differential value of the rainfall information is greater than the third threshold. If it is greater than the third threshold, the differential value of the rainfall information is judged to be positive or negative. If it is less than or equal to the third threshold, the dynamic rainfall judgment is exited. The third threshold is smaller than the first threshold because the rainfall fluctuates when it rains, ensuring that the differential value of the rainfall information can be judged to be positive or negative even when the rainfall is very small.

[0063] like Figure 2 FIG. 1 is a flow chart of the method according to an embodiment of the present invention. According to this embodiment, the control method of the scraper includes the following steps:

[0064] The first step is to obtain the rainfall information detected by the rain sensor;

[0065] In the second step, it is determined whether the current rainfall value reaches a second threshold value according to the rainfall information. If the second threshold value is reached, the scraper starts scraping directly; if the second threshold value is not reached, the process proceeds to the third step.

[0066] In the third step, it is determined whether the current rainfall value reaches a first threshold value based on the rainfall information. If the first threshold value is reached, dynamic rainfall determination of the rainfall information detected by the rain sensor is initiated; if the first threshold value is not reached, the process proceeds to the first step.

[0067] The fourth step is to perform dynamic rainfall determination based on the rainfall information detected by the rainfall sensor, collect rainfall information once every preset period, and obtain a differential value of the rainfall information;

[0068] If the difference between the two adjacent rainfall information values ​​is of opposite positive and negative values, a valid determination is recorded; if the difference between the two adjacent rainfall information values ​​is of the same positive and negative values, an invalid determination is recorded;

[0069] The fifth step is to determine whether the dynamic rainfall of the rainfall information within the preset time period meets the preset conditions based on the number of valid judgments and the number of invalid judgments obtained within the preset time period; if the preset conditions are met, start scraping; if the preset conditions are not met, exit the dynamic rainfall judgment and go to the first step.

[0070] In the above-described embodiment of the present invention, rainfall information detected by a rain sensor is obtained. If the current rainfall value is determined to have reached a first threshold value based on the rainfall information, dynamic rainfall determination based on the rainfall information detected by the rain sensor is initiated. If the dynamic rainfall information satisfies a preset condition within a preset time period, the wipers are activated. If the current rainfall value is determined to have reached a second threshold value based on the rainfall information, the wipers are directly activated. If the dynamic rainfall determination indicates that light rain is falling, the wipers are activated to avoid the problem of raindrop accumulation and slow wiping.

[0071] like Figure 3 As shown, an embodiment of the present invention further provides a control device for a scraper, the device comprising:

[0072] Information acquisition module 1, used to obtain rainfall information detected by the rain sensor;

[0073] Rainfall determination module 2, used for dynamic rainfall determination;

[0074] The control module 3 is used to start the dynamic rainfall determination of the rainfall information detected by the rain sensor when it is determined that the current rainfall value reaches a first threshold value based on the rainfall information; and send a wiper start instruction when it is determined that the dynamic rainfall of the rainfall information within a preset time period meets the preset conditions.

[0075] Optionally, in the control device for the scraper, the control module 3 is further configured to:

[0076] When it is determined that the dynamic rainfall of the rainfall information within the preset time period does not meet the preset condition, the dynamic rainfall determination is stopped.

[0077] Optionally, in the control device for the scraper, the control module 3 is further configured to:

[0078] When it is determined according to the rainfall information that the current rainfall value reaches a second threshold, a wiper start instruction is sent; wherein the second threshold is greater than the first threshold.

[0079] Optionally, the rainfall determination module 2 includes:

[0080] An information collection unit, configured to collect rainfall information once every preset period during the dynamic rainfall determination;

[0081] An information processing unit is used to obtain the differential value of the rainfall information; when the differential values ​​of the rainfall information of two adjacent times are opposite in positive and negative values, record a valid judgment; when the differential values ​​of the rainfall information of two adjacent times are the same in positive and negative values, record an invalid judgment.

[0082] Optionally, in the scraper control device, the information processing unit is further configured to:

[0083] After obtaining the differential value of the rainfall information, determining whether the absolute value of the differential value of the rainfall information is greater than a third threshold; wherein the third threshold is less than the first threshold;

[0084] When the absolute value of the difference value of the rainfall information is greater than the third threshold, the difference value of the currently obtained rainfall information is compared with the difference value of the rainfall information obtained once adjacently to determine whether the difference values ​​of the rainfall information of the two adjacent times are opposite in positive and negative values.

[0085] Optionally, in the scraper control device, the information processing unit is further configured to:

[0086] According to the number of valid determinations and the number of invalid determinations obtained by statistics within the preset time period, it is determined whether the dynamic rainfall of the rainfall information within the preset time period meets the preset condition.

[0087] An embodiment of the present invention also provides a control device, comprising: a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein the processor is configured to read the program in the memory and execute the scraping control method as described in any one of the above items.

[0088] In summary, in the embodiments of the present invention, rainfall information detected by a rain sensor is obtained. If the current rainfall value is determined to have reached a first threshold value based on the rainfall information, dynamic rainfall determination based on the rainfall information detected by the rain sensor is initiated. If the dynamic rainfall information satisfies a preset condition within a preset time period, the wipers are activated. If the current rainfall value is determined to have reached a second threshold value based on the rainfall information, the wipers are directly activated. If the dynamic rainfall determination indicates that light rain is falling, the wipers are activated to avoid the problem of raindrop accumulation and slow wiper start-up.

[0089] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for controlling a scraper, characterized in that: The control method includes: Obtain rainfall information detected by the rain sensor; In the case where it is determined according to the rainfall information that the current rainfall value reaches a first threshold, dynamic rainfall determination of the rainfall information detected by the rain sensor is initiated; When it is determined that the dynamic rainfall information of the rainfall within the preset time period meets the preset conditions, a wiper start instruction is sent; If it is determined that the dynamic rainfall information within the preset time period does not meet the preset condition, stopping the dynamic rainfall determination; The step of starting the dynamic rainfall determination of the rainfall information detected by the rainfall sensor includes: Collecting rainfall information once every preset period and obtaining a differential value of the rainfall information; If the difference between the two adjacent rainfall information values ​​is of opposite positive and negative values, a valid determination is recorded; if the difference between the two adjacent rainfall information values ​​is of the same positive and negative values, an invalid determination is recorded; If, within the preset time period, the number of valid determinations is greater than or equal to a first preset number, and the number of consecutively obtained invalid determinations is less than a second preset number, it is determined that the dynamic rainfall of the rainfall information meets the preset condition.

2. The control method according to claim 1, characterized in that: The method further comprises: When it is determined according to the rainfall information that the current rainfall value reaches a second threshold, sending a wiper start instruction; The second threshold is greater than the first threshold.

3. The control method according to claim 1, wherein: The method further comprises: After obtaining the differential value of the rainfall information, determining whether the absolute value of the differential value of the rainfall information is greater than a third threshold; wherein the third threshold is less than the first threshold; When the absolute value of the difference value of the rainfall information is greater than the third threshold, the difference value of the currently obtained rainfall information is compared with the difference value of the rainfall information obtained once adjacently to determine whether the difference values ​​of the rainfall information of the two adjacent times are opposite in positive and negative values.

4. A control device for a scraper, characterized in that: The device comprises: An information acquisition module is used to obtain rainfall information detected by a rain sensor; Rainfall determination module, used for dynamic rainfall determination; a control module configured to initiate dynamic rainfall determination of the rainfall information detected by the rain sensor when it is determined that a current rainfall value reaches a first threshold value based on the rainfall information; and to send a wiper start instruction when it is determined that the dynamic rainfall value of the rainfall information within a preset time period satisfies a preset condition; The control module is further configured to stop the dynamic rainfall determination if it is determined that the dynamic rainfall of the rainfall information within the preset time period does not meet the preset condition; Wherein, the rainfall determination module includes: An information collection unit, configured to collect rainfall information once every preset period during the dynamic rainfall determination; an information processing unit configured to obtain a differential value of the rainfall information; if the differential values ​​of the rainfall information between two adjacent times are opposite in positive and negative values, record a valid determination; if the differential values ​​of the rainfall information between two adjacent times are identical in positive and negative values, record an invalid determination; The information processing unit is also used to determine that the dynamic rainfall of the rainfall information meets the preset condition when the number of valid judgments is greater than or equal to a first preset number and the number of invalid judgments obtained continuously is less than a second preset number within the preset time period.

5. A scraper control device, characterized in that: include: A transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor; wherein the processor is configured to read the program in the memory and execute the scraping control method according to any one of claims 1 to 3.

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