An electronic windshield wiper and washer control method, device and system

Abstract

The present invention relates to the technical field of windshield wiper and washer systems, and discloses an electronic windshield wiper and washer control method, device and system. 1. The method is as follows: S1. Receive a washing request instruction, where the requested washing duration is t; S2. Collect the vehicle speed value, where the vehicle speed value is V; S3. Determine whether the windshield wiper is in a working state according to the windshield wiper working mode. If so, execute step S4, otherwise execute step S5; S4. Control the windshield wiper action according to the washing request instruction, windshield wiper working mode and vehicle speed; S5. Control the windshield wiper action according to the washing request instruction and vehicle speed. The present invention is used to solve the problem in the prior art that it is difficult to fully simulate the vehicle driving state in a wind tunnel test, the working state of the windshield wiper system is quite different from that in actual use, and it is difficult to ensure the accuracy of the anti-floating performance test results of the windshield wiper system.

Description

Technical Field

[0001] The present invention relates to the technical field of windshield wiper and washer systems, and particularly to an electronic windshield wiper and washer control method, device and system. Background Art

[0002] A vehicle windshield wiper and washer control system generally includes a windshield wiper gear control command sending unit (such as a combination switch), a windshield wiper action control unit (such as a windshield wiper controller), a windshield wiper action execution mechanism (such as including a windshield wiper motor, a connecting rod, a wiper arm, a wiper blade, etc.), and a washer fluid injector. The windshield wiper gear command is sent by the combination switch. After receiving the gear command of the combination switch, the windshield wiper controller controls the internal relay to act and switches the on / off state of the circuit, so as to realize various functions of the windshield wiper.

[0003] In the prior art, a mechanical motor is mostly used as the windshield wiper actuator. When washing the front windshield, the washer fluid injector and the windshield wiper actuator are controlled separately, and only manual control can be used to make the washer fluid injector and the windshield wiper controller cooperate to work, with low intelligence; in some working conditions, it will cause waste of windshield wiper fluid, resulting in the need for the user to refill the windshield wiper fluid after using it for a very short period of time, increasing the vehicle use cost; for example, after the washer fluid sprayed by the washer fluid injector has covered the front windshield, the washer fluid is still sprayed continuously.

[0004] Moreover, the way of manually controlling the cooperation between the washer fluid injector and the windshield wiper controller cannot make corresponding execution actions according to the current external environment of the vehicle and the current vehicle speed, resulting in the front windshield not being wiped clean, and even not being able to wipe off the washer fluid on the windshield in time when the vehicle is driving at a high speed, causing the user's field of vision to be unclear and increasing the danger of driving. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an electronic windshield wiper and washer control method, device and system, so as to solve the problems in the prior art that only manual control can be used to make the washer fluid injector and the windshield wiper actuator cooperate to work, with low intelligence and causing waste of windshield wiper fluid.

[0006] The present invention solves the above technical problems through the following technical means:

[0007] In a first aspect, an electronic windshield wiper and washer control method is provided, and the method is as follows:

[0008] S1. Receive a washing request instruction, where the requested washing duration is t;

[0009] S2. Collect the vehicle speed value, where the vehicle speed value is V;

[0010] S3. Judge whether the windshield wiper is in a working state according to the windshield wiper working mode. If so, execute step S4, otherwise execute step S5;

[0011] S4. Control the wiper operation according to the washing request instruction, wiper working mode, and vehicle speed;

[0012] S5. Control the wiper operation according to the washing request instruction and vehicle speed.

[0013] In combination with the first aspect, in some alternative embodiments, in step S3, the method for determining whether the wiper is performing a wiping operation according to the wiper working mode is as follows: the wiper working mode includes a single wipe mode, a continuous wipe mode, an automatic wipe mode, and a standby mode;

[0014] If the wiper working mode is one of the single wipe mode, continuous wipe mode, and automatic wipe mode, it means the wiper is in the working state, and execute step S4;

[0015] If the wiper working mode is the standby mode, it means the wiper is not in the working state, and execute step S5.

[0016] In combination with the first aspect, in some alternative embodiments, in step S4, the method for controlling the wiper operation according to the washing request instruction, wiper working mode, and vehicle speed is as follows:

[0017] A1. If the wiper working mode is the single wipe mode, control the wiper operation according to the washing request instruction and vehicle speed;

[0018] A2. If the wiper working mode is the automatic wipe mode, control the wiper operation according to the washing request instruction and vehicle speed;

[0019] A3. If the wiper working mode is the continuous wipe mode, maintain the wiping operation of the wiper in the continuous wipe mode.

[0020] In combination with the first aspect, in some alternative embodiments, if the wiper working mode is the single wipe mode, the method for controlling the wiper operation according to the washing request instruction and vehicle speed is as follows: Preset a third duration threshold t3, and execute the following steps:

[0021] B1. Determine whether the wiper is wiping. If it is, execute B2; otherwise, execute step S5;

[0022] B2. Determine the magnitude relationship between t and t3;

[0023] If t3 ≤ t, control the wiper to continuously wipe slowly. After wiping for a duration of t, control the wiper to wipe periodically and slowly;

[0024] If t3 > t, maintain the original wiping operation.

[0025] In combination with the first aspect, in some alternative embodiments, if the wiper operating mode is the automatic wiping mode, the method for controlling the wiper operation according to the washing request instruction and the vehicle speed is as follows: Determine whether the wiper is currently wiping. If it is, maintain the wiping action in the automatic wiper mode; otherwise, execute step S5.

[0026] In combination with the first aspect, in some alternative embodiments, in step S5, the method for controlling the wiper operation according to the washing request duration instruction and the vehicle speed is as follows:

[0027] Preset a first duration threshold t1 and a second duration threshold t2, and preset a first vehicle speed threshold V1 and a second vehicle speed threshold V2. Let the duration of the washing request instruction be t, where t1, t2, V1, and V2 are all positive integers, and t1 > t2, V1 > V2. Then execute the following steps:

[0028] C1. Determine the magnitudes of t with respect to t1 and t2:

[0029] If t ≤ t2, execute step C2;

[0030] If t2 < t ≤ t1, execute step C3;

[0031] If t1 < t, execute step C4;

[0032] C2. Determine the magnitudes of V with respect to V1 and V2:

[0033] If V ≤ V2, after delaying for a preset time t0, control the wiper to wipe for one cycle and then stop;

[0034] If V2 < V ≤ V1, after delaying for a preset time t0, control the wiper to wipe for two cycles and then stop;

[0035] If V1 < V, immediately control the wiper to wipe for three cycles and then stop;

[0036] C3. Determine the magnitude of V with respect to V1:

[0037] If V ≤ V1, after delaying for a preset time t0, control the wiper to wipe for two cycles and then stop;

[0038] If V1 < V, immediately control the wiper to wipe for three cycles and then stop;

[0039] C4. Determine the magnitude of V with respect to V1:

[0040] If V ≤ V1, after delaying for a preset time t0, control the wiper to continuously wipe slowly. After wiping for a duration of t, control the wiper to wipe periodically and slowly;

[0041] If V1 < V, immediately control the wiper to continuously wipe slowly. After wiping for a duration of t, control the wiper to wipe periodically and slowly;

[0042] In combination with the first aspect, in some alternative embodiments, the method further includes collecting the external temperature value T, presetting the temperature threshold T0, controlling the wiper to slowly wipe periodically for three cycles, and then determining the magnitudes of V and V2, and the magnitudes of T and T0;

[0043] If V2 ≤ V and T0 ≤ T, then control the wiper to slowly wipe periodically for one cycle and then stop; otherwise, immediately control the wiper to stop wiping.

[0044] In a second aspect, an electronic wiper washing device is provided, and the device includes:

[0045] A washing switch: used to generate a washing request instruction;

[0046] A controller: used to receive the washing request instruction, vehicle speed value, and external temperature value, and used to control the start and stop of the wiper drive module and the washing injection module;

[0047] A collector: used to collect the vehicle speed and external temperature, and generate the vehicle speed value and external temperature value;

[0048] A wiper driver: used to drive the wiper to wipe;

[0049] A washing liquid injector: used to drive the washing water kettle to spray out the washing liquid.

[0050] In a third aspect, an electronic wiper washing system is provided, and the system includes: a washing module, a control module, a collection module, a wiper drive module, and a washing injection module. The washing module, collection module, wiper drive module, and washing liquid injection module are all connected to the control module.

[0051] Advantages of the present invention:

[0052] The present invention collects the vehicle speed value, and controls the washing liquid injector and the wiper actuator to cooperate according to the vehicle speed value, the requested washing duration, and the working mode of the wiper, realizing flexible control of the washing liquid injector and the wiper actuator, improving the intelligent level of the wiper washing control system; and washing the front windshield cleaner with as little washing liquid as possible, and making corresponding execution actions in combination with environmental variables and the current vehicle speed, increasing driving safety while saving the wiper washing liquid more, and increasing the service life of the wiper washing liquid. Description of the Drawings

[0053] Figure 1 is a flowchart of the electronic wiper washing control method in the present invention;

[0054] Figure 2 is the overall flowchart of the electronic wiper washing control method in the present invention;

[0055] Figure 3 is Figure 2 the enlarged process box in Figure 1 ;

[0056] Figure 4 is Figure 2 the enlarged process box in Figure 2 ;

[0057] Figure 5 is Figure 2 the enlarged process box in Figure 3 ;

[0058] Figure 6 is the system block diagram of the electronic wiper washing control system in the present invention. Specific Embodiments

[0059] The following specific embodiments are used to illustrate the implementation manners of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. It should be noted that the diagrams provided in the following embodiments are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as limitations on the present invention. To better illustrate the embodiments of the present invention, some components in the diagrams will be omitted, enlarged, or reduced, which do not represent the sizes of actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the diagrams may be omitted.

[0060] In the diagrams of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the diagrams, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the diagrams are only for illustrative purposes and should not be construed as limitations on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0061] Embodiment 1:

[0062] As Figures 1 - 5 shown, an electronic wiper washing control method is applied to an electronic wiper washing device, and the device includes:

[0063] Washing switch: used to generate a washing request instruction;

[0064] Controller: used to receive the washing request instruction, vehicle speed value, and external vehicle temperature value, and used to control the start and stop of the wiper drive module and the washing injection module; in this embodiment, the controller is preferably a body domain controller.

[0065] Collector: Used to collect vehicle speed and outside temperature, and generate vehicle speed value and outside temperature value; In this embodiment, the collector includes an outside temperature sensor and a vehicle speed sensor, and both the outside temperature sensor and the vehicle speed sensor are connected to the body domain controller.

[0066] Wiper driver: Used to drive the wiper to wipe;

[0067] Washer fluid injector: Used to drive the washer fluid kettle to spray washer fluid.

[0068] The specific steps of the electronic wiper washing control method are as follows:

[0069] S1. The driver sends a washing request instruction to the body domain controller through the washing switch, where the requested washing duration is t;

[0070] S2. After receiving the washing request instruction, the body domain controller collects the vehicle speed value at this time through the vehicle speed sensor, and the vehicle speed sensor feeds back the vehicle speed value to the body domain controller;

[0071] S3. The wiper working modes include single wipe mode, continuous wipe mode, automatic wipe mode, and standby mode;

[0072] If the wiper working mode is one of the single wipe mode, continuous wipe mode, and automatic wipe mode, it means the wiper is in the working state, and step S4 is executed;

[0073] If the wiper working mode is the standby mode, it means the wiper is not in the working state, and step S5 is executed;

[0074] S4. Control the wiper action according to the washing request instruction, wiper working mode, and vehicle speed;

[0075] S5. Control the wiper action according to the washing request instruction and vehicle speed.

[0076] The specific method of step S4 is as follows:

[0077] A1. If the wiper working mode is the single wipe mode, control the wiper action according to the washing request instruction and vehicle speed;

[0078] A2. If the wiper working mode is the automatic wipe mode, control the wiper action according to the washing request instruction and vehicle speed;

[0079] A3. If the wiper working mode is the continuous wipe mode, maintain the wiping action of the continuous wipe mode of the wiper.

[0080] The specific method of step A1 is as follows:

[0081] Preset the third duration threshold t3. In this embodiment, the following steps are executed:

[0082] B1. Determine whether the windshield wiper is in the process of wiping. If yes, execute B2; otherwise, execute step S5.

[0083] B2. Determine the magnitude relationship between t and t3.

[0084] If t3 ≤ t, control the windshield wiper to continuously wipe slowly. After wiping for a duration of t, control the windshield wiper to wipe periodically and slowly. This ensures that the windshield wiper can wipe the cleaning liquid on the windshield clean, avoiding the situation where the windshield wiper stops after one wipe and the cleaning liquid remains on the windshield, affecting the driver's line of sight.

[0085] If t3 > t, maintain the original wiping action and there is no need to additionally control the windshield wiper to wipe.

[0086] The specific method of step A2 is as follows: If the working mode of the windshield wiper is the automatic wiping mode, the method for controlling the windshield wiper according to the cleaning request instruction and vehicle speed is: Determine whether the windshield wiper is in the process of wiping. If yes, maintain the wiping action of the automatic wiping mode of the windshield wiper; otherwise, execute step S5.

[0087] The specific method of step S5 is as follows:

[0088] Preset a first duration threshold t1 and a second duration threshold t2, preset a first vehicle speed threshold V1 and a second vehicle speed threshold V2. Let the duration of the cleaning request instruction be t, where t1, t2, V1, and V2 are all positive integers, and t1 > t2, V1 > V2. Execute the following steps:

[0089] C1. Determine the magnitude relationship between t and t1 and t2:

[0090] If t ≤ t2, execute step C2;

[0091] If t2 < t ≤ t1, execute step C3;

[0092] If t1 < t, execute step C4;

[0093] C2. In the case where the cleaning request time is relatively short, determine the magnitude relationship between V and V1 and V2:

[0094] If V ≤ V2, after delaying for a preset time t0, control the windshield wiper to wipe for one cycle and then stop; By setting the wiping after delaying for a duration of t0, it can ensure that the cleaning liquid covers the front windshield.

[0095] If V2 < V ≤ V1, after delaying for a preset time t0, control the windshield wiper to wipe for two cycles and then stop, which can effectively ensure the cleaning degree of the windshield wiped by the windshield wiper.

[0096] If V1 < V, immediately control the windshield wiper to swipe for three cycles and then stop. In this state, the vehicle speed is relatively fast, and under the action of the airflow, the windshield washer fluid can quickly cover the front windshield. Immediately controlling the windshield wiper to swipe can ensure that the windshield is wiped clean. This can avoid the situation where the windshield wiper swipes after the windshield washer fluid is blown off the windshield by the airflow.

[0097] C3. Determine the magnitude relationship between V and V1:

[0098] If V ≤ V1, after delaying for a preset time t0, control the windshield wiper to swipe for two cycles and then stop;

[0099] If V1 < V, immediately control the windshield wiper to swipe for three cycles and then stop;

[0100] C4. Determine the magnitude relationship between V and V1:

[0101] If V ≤ V1, after delaying for a preset time t0, control the windshield wiper to continuously swipe slowly. After swiping for a duration of t, control the windshield wiper to periodically swipe slowly; in the state of relatively slow vehicle speed, delaying the swipe can ensure that the windshield wiper can swipe when the windshield washer fluid covers the front windshield. If V1 < V, immediately control the windshield wiper to continuously swipe slowly. After swiping for a duration of t, control the windshield wiper to periodically swipe slowly. In the state of relatively fast vehicle speed, immediately swiping can avoid the situation where the windshield wiper swipes after the windshield washer fluid is blown off the windshield by the airflow.

[0102] In the case of a relatively long washing request time, when the vehicle speed is slow, delay the swipe to ensure that the windshield wiper can swipe when the windshield washer fluid covers the front windshield; when the vehicle speed is fast, immediately swipe to avoid the situation where the windshield wiper swipes after the windshield washer fluid is blown off the windshield by the airflow, effectively ensuring that the windshield wiper swipes after the windshield washer fluid covers the front windshield. And periodically swiping slowly can effectively ensure the cleanliness of the front windshield, eliminating the need for a secondary washing request and effectively reducing the usage amount of the windshield washer fluid.

[0103] An electronic windshield wiper washing control method according to this embodiment further includes collecting the outside temperature value T of the vehicle, presetting a temperature threshold T0, after controlling the windshield wiper to periodically swipe slowly for three cycles, determining the magnitude relationship between V and V2, and the magnitude relationship between T and T0;

[0104] If V2 ≤ V and T0 ≤ T, control the windshield wiper to periodically swipe slowly for one cycle and then stop; otherwise, immediately control the windshield wiper to stop swiping. After the windshield wiper periodically swipes slowly for three cycles, judge the vehicle speed and the outside temperature of the vehicle to further ensure the cleaning degree of the windshield wiper swipe.

[0105] Embodiment 2: As Figure 6As shown in the figure, an electronic windshield wiper and washer system is applied to the electronic windshield wiper and washer control method of the above embodiment. The system includes: a washer module, a control module, a collection module, a windshield wiper drive module, and a washer jet module. The washer module, the collection module, the windshield wiper drive module, and the washer fluid jet module are all connected to the control module.

[0106] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention. The technologies, shapes, and structures not described in detail in the present invention are all well-known technologies.

Claims

1. An electronic windshield wiper and washer control method, characterized in that The method is as follows: S1. Receive a washing request instruction, where the requested washing duration is t; S2. Collect the vehicle speed value, where the vehicle speed value is V; S3. Determine whether the windshield wiper is in a working state according to the windshield wiper working mode. If so, execute step S4; otherwise, execute step S5; S4. Control the windshield wiper action according to the washing request instruction, the windshield wiper working mode, and the vehicle speed; S5. Control the windshield wiper action according to the washing request instruction and the vehicle speed; In the above step S5, the method for controlling the windshield wiper according to the washing request instruction and the vehicle speed is as follows: Preset a first duration threshold t1 and a second duration threshold t2, preset a first vehicle speed threshold V1 and a second vehicle speed threshold V2, and let the duration of the washing request instruction be t. Here, t1, t2, V1, and V2 are all positive integers, and t1 > t2, V1 > V2. Execute the following steps: C1. Judge the magnitudes of t, t1, and t2: If t ≤ t2, execute step C2; If t2 < t ≤ t1, execute step C3; If t1 < t, execute step C4; C2. Judge the magnitudes of V, V1, and V2: If V ≤ V2, then after delaying for a preset time t0, control the windshield wiper to scrape for one cycle and then stop; If V2 < V ≤ V1, then after delaying for a preset time t0, control the windshield wiper to scrape for two cycles and then stop; If V1 < V, then immediately control the windshield wiper to scrape for three cycles and then stop; C3. Judge the magnitude of V and V1: If V ≤ V1, then after delaying for a preset time t0, control the windshield wiper to scrape for two cycles and then stop; If V1 < V, then immediately control the windshield wiper to scrape for three cycles and then stop; C4. Judge the magnitude of V and V1: If V ≤ V1, then after delaying for a preset time t0, control the windshield wiper to continuously scrape slowly. After scraping for a duration of t, control the windshield wiper to scrape periodically and slowly; If V1 < V, then immediately control the windshield wiper to continuously scrape slowly. After scraping for a duration of t, control the windshield wiper to scrape periodically and slowly.

2. The electronic wiper washing control method according to claim 1, wherein: In the above step S3, the method for judging whether the windshield wiper is performing a scraping action according to the windshield wiper working mode is as follows: The windshield wiper working mode includes a single scraping mode, a continuous scraping mode, an automatic scraping mode, and a standby mode; If the windshield wiper working mode is one of the single scraping mode, the continuous scraping mode, and the automatic scraping mode, it means that the windshield wiper is in a working state, and execute step S4; If the windshield wiper working mode is the standby mode, it means that the windshield wiper is not in a working state, and execute step S5.

3. The electronic wiper washing control method according to claim 2, characterized in that: In the above step S4, the method for controlling the windshield wiper action according to the washing request instruction, the windshield wiper working mode, and the vehicle speed is as follows: A1. If the windshield wiper working mode is the single scraping mode, control the windshield wiper action according to the washing request instruction and the vehicle speed; A2. If the windshield wiper working mode is the automatic scraping mode, control the windshield wiper action according to the washing request instruction and the vehicle speed; A3. If the windshield wiper working mode is the continuous scraping mode, maintain the scraping action of the continuous scraping mode of the windshield wiper.

4. The electronic wiper washing control method according to claim 3, characterized in that: If the windshield wiper working mode is the single scraping mode, the method for controlling the windshield wiper action according to the washing request instruction and the vehicle speed is as follows: Preset a third duration threshold t3, and execute the following steps: B1. Judge whether the windshield wiper is scraping. If so, execute B2; otherwise, execute step S5; B2. Determine the magnitude relationship between t and t3; If t3 ≤ t, control the wiper to continuously wipe slowly. After wiping for a duration of t, control the wiper to wipe periodically and slowly; If t3 > t, maintain the original wiping action.

5. The electronic wiper washing control method according to claim 3, wherein: If the wiper working mode is the automatic wiping mode, the method for controlling the wiper action according to the washing request instruction and vehicle speed is as follows: Determine whether the wiper is currently wiping. If so, maintain the wiping action in the automatic wiper mode; otherwise, execute step S5.

6. The electronic windshield wiper washing control method according to claim 1, wherein: The method further includes collecting the outside vehicle temperature value T, presetting the temperature threshold T0, after controlling the wiper to wipe periodically and slowly for three cycles, determining the magnitude relationship between V and V2, and the magnitude relationship between T and T0; If V2 ≤ V and T0 ≤ T, control the wiper to wipe periodically and slowly for one cycle and then stop; otherwise, immediately control the wiper to stop wiping.

7. An electronic wiper washing device for performing the electronic wiper washing control method according to any one of claims 1-6, characterized in that, The device includes: Washing switch: used to generate a washing request instruction; Controller: used to receive the washing request instruction, vehicle speed value, and outside vehicle temperature value, and used to control the start and stop of the wiper drive module and the washing injection module; Collector: used to collect the vehicle speed and outside vehicle temperature, and generate the vehicle speed value and outside vehicle temperature value; Wiper driver: used to drive the wiper to wipe; Washing liquid injector: used to drive the washing water kettle to spray out the washing liquid.

8. An electronic windshield wiper and washer system for implementing the electronic windshield wiper and washer control method according to any one of claims 1-6, characterized in that, The system includes: a washing module, a control module, a collection module, a wiper drive module, and a washing injection module. The washing module, collection module, wiper drive module, and washing liquid injection module are all connected to the control module.

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