阅读说明：本技术 一种自动雨刷控制方法及系统 (automatic windshield wiper control method and system ) 是由 张永强 李振山 王怡文 赵清 于 2018-07-18 设计创作，主要内容包括：本发明涉及车辆控制技术领域,特别是一种自动雨刷控制方法及系统。该系统包括控制单元和挡位检测单元,挡位检测单元的输出端连接控制单元,当雨刷以设定转速开启时,控制单元根据车辆挡位信息判断挡位是否从停车挡变为前进挡或倒车挡,若是,则所述控制单元控制雨刷转速为第一设定倍数的设定转速,其中该第一设定倍数大于1,实现了雨刷转速根据驾驶需求自动控制,解决了现有雨刷的控制无法满足雨中车辆刚起步时驾驶员对视野的要求的问题。(The invention relates to the technical field of vehicle control, in particular to a automatic windshield wiper control method and a system, wherein the system comprises a control unit and a gear detection unit, the output end of the gear detection unit is connected with the control unit, when a windshield wiper is started at a set rotating speed, the control unit judges whether the gear is changed from a parking gear to a forward gear or a reverse gear according to vehicle gear information, if so, the control unit controls the rotating speed of the windshield wiper to be the set rotating speed of set multiple, wherein the set multiple is more than 1, the rotating speed of the windshield wiper is automatically controlled according to driving requirements, and the problem that the requirements of a driver on the field of vision when the vehicle just starts in the rain cannot be met by the control of the existing windshield wiper is.)

1, A method for controlling automatic windshield wiper, comprising the steps of:

1) when the windshield wiper is started at a set rotating speed, vehicle gear information is obtained, and whether the gear is changed from a parking gear to a forward gear or a reverse gear is judged;

2) if yes, the wiper rotation speed is controlled to be the set rotation speed of set multiple, wherein the set multiple is larger than 1.

2. The automatic wiper control method according to claim 1, wherein when the wiper is turned on at the set rotation speed, the vehicle speed is also acquired, and if the vehicle speed is greater than the set vehicle speed, the wiper rotation speed is controlled to the set rotation speed of a second set multiple, the second set multiple being greater than 1.

3. The automatic wiper control method according to claim 2, wherein if the vehicle speed is greater than the set vehicle speed, the wiper is controlled to operate at the set rotation speed.

4. The automatic wiper control method according to claim 2, wherein when the wiper is turned on at the set rotation speed, if the vehicle speed is equal to 0, the rotation speed of the wiper is controlled to the set rotation speed of a third set multiple, wherein the third set multiple is smaller than 1.

5. The automatic wiper control method as defined in claim 1, 2 or 4, wherein the set rotation speed is calibrated according to a magnitude of the rainfall, which is in a linear relationship in direct proportion to the rotation speed.

The automatic windshield wiper control system is characterized by comprising a control unit and a gear detection unit, wherein the output end of the gear detection unit is connected with the control unit, when the windshield wiper is started at a set rotating speed, the control unit judges whether the gear is changed from a parking gear to a forward gear or a reverse gear according to vehicle gear information, if yes, the control unit controls the rotating speed of the windshield wiper to be the set rotating speed of -th set multiple, and the -th set multiple is larger than 1.

7. The automatic wiper control system according to claim 6, further comprising a vehicle speed detecting unit, wherein an output end of the vehicle speed detecting unit is connected to the control unit, when the wiper is turned on at the set rotation speed, the control unit determines whether the vehicle speed is greater than the set vehicle speed according to the vehicle speed, and if so, the control unit controls the rotation speed of the wiper to be the set rotation speed of a second set multiple, wherein the second set multiple is greater than 1.

8. The automatic wiper control system according to claim 7, wherein when the wiper is turned on at the set rotation speed, if the vehicle speed is 0, the control unit controls the rotation speed of the wiper to be the set rotation speed of a third set multiple, wherein the third set multiple is less than 1.

9. The automatic wiper control system according to claim 6, 7 or 8, further comprising a rain sensor, wherein an output end of the rain sensor is connected to the control unit, a calibrated direct proportional linear relationship between the rain amount and the rotation speed is stored in the control unit, and the set rotation speed is obtained by comparing the calibrated direct proportional linear relationship.

10. The automatic wiper control system according to claim 9, wherein the control unit controls a heater connected to heat the windshield water, and an input terminal of the control unit is connected to a frost detection unit for detecting frost formation on the windshield and a temperature sensor for detecting a temperature of the windshield water, and the control unit controls the heater to be turned on when the windshield is frosted, and controls water spray to the windshield and wiper operation if the temperature of the windshield water is higher than a set temperature.

Technical Field

The invention relates to the technical field of vehicle control, in particular to automatic windshield wiper control methods and systems.

Background

The windshield wipers in the vehicle are divided into manual windshield wipers and automatic windshield wipers, the speed of the manual windshield wipers needs to be manually started, and the automatic windshield wipers perform automatic speed control according to the rainfall detected by the rainfall sensor.

A wiper motor control system and a control method thereof are disclosed in Chinese patent publication No. CN106347304A, wherein the control system comprises a wiper motor, a wiper combination switch for controlling the wiper motor, a wiper relay for driving the wiper motor, a wiper sensor for acquiring rain information, a vehicle speed sensor for acquiring vehicle speed information, a controller for acquiring signals of the wiper combination switch, the rain sensor and the vehicle speed sensor, operating the wiper motor to control the output of the wiper through the wiper relay after calculation processing, when the wiper is in an automatic gear, the wiper operates at a low speed no matter the rain quantity is 0, when the wiper is in the automatic gear, the wiper operates at a low speed according to the rain quantity, the function of intelligently controlling the wiper speed is realized, but the driver can not drive the wiper to move forward or backward according to the rain quantity, and the driver can not respond well to the field of vision because the driver needs to get the rain quantity when the vehicle is in the rain quantity.

Disclosure of Invention

The invention aims to provide automatic windshield wiper control methods and systems, which are used for solving the problem that the existing windshield wiper control cannot meet the requirement of a driver on the visual field when a vehicle starts in the rain.

In order to realize the automatic control of the rotation speed of the windshield wiper according to the driving requirement and solve the problem that the control of the traditional windshield wiper can not meet the requirement of a driver on the visual field when the vehicle just starts in the rain, the invention provides automatic windshield wiper control methods, which comprise the following steps:

1) when the windshield wiper is started at a set rotating speed, vehicle gear information is obtained, and whether the gear is changed from a parking gear to a forward gear or a reverse gear is judged;

2) if yes, the wiper rotation speed is controlled to be the set rotation speed of set multiple, wherein the set multiple is larger than 1.

, to ensure the driver's vision is restored quickly when the vehicle speed is high, the vehicle speed is also obtained when the wiper is turned on at the set speed, and if the vehicle speed is higher than the set vehicle speed, the wiper speed is controlled to be the set speed of a second set multiple which is higher than 1.

, if the vehicle speed is higher than the set vehicle speed, the wiper is controlled to operate at the set rotation speed to ensure the driver's view when the vehicle speed is low.

, in order to reduce the rotation speed of the wiper when the vehicle is at rest, ensure the service life of the wiper and reduce the noise of the wiper, when the wiper is turned on at the set rotation speed, if the vehicle speed is equal to 0, the rotation speed of the wiper is controlled to be the set rotation speed of a third set multiple, wherein the third set multiple is less than 1.

, in order to realize automatic control of the wiper according to the rainfall, the set rotating speed is calibrated according to the rainfall, and the rainfall is in direct proportion and linear relation with the rotating speed.

The invention also provides automatic windshield wiper control systems, which comprises a control unit and a gear detection unit, wherein the output end of the gear detection unit is connected with the control unit, when the windshield wiper is started at the set rotating speed, the control unit judges whether the gear is changed from the parking gear to the forward gear or the reverse gear according to the vehicle gear information, if yes, the control unit controls the rotating speed of the windshield wiper to be the set rotating speed of set multiple, wherein the set multiple is more than 1.

, the vehicle speed detection unit is also included, the output end of the vehicle speed detection unit is connected with the control unit, when the wiper is turned on at the set speed, the control unit judges whether the vehicle speed is greater than the set vehicle speed according to the vehicle speed, if yes, the control unit controls the wiper speed to be the set speed of a second set multiple, and the second set multiple is greater than 1.

, when the wiper is turned on at the set rotation speed, if the vehicle speed is 0, the control unit controls the rotation speed of the wiper to be the set rotation speed of a third set multiple, wherein the third set multiple is smaller than 1.

, in order to realize the automatic control of the wiper according to the rainfall, the automatic control system also comprises a rainfall sensor, the output end of the rainfall sensor is connected with the control unit, the control unit stores the calibrated direct proportion linear relation between the rainfall and the rotating speed, and the set rotating speed is obtained by comparing the calibrated direct proportion linear relation.

, in order to solve the problem of long time after frosting the windshield glass in winter, the control unit controls and connects the heater for heating the windshield glass water, the input end of the control unit is connected with the frosting detection unit for detecting the frosting of the windshield glass and the temperature sensor for detecting the temperature of the windshield glass water, when the windshield glass is frosted, the control unit controls the heater to be turned on, if the temperature of the windshield glass water is higher than the set temperature, the control unit controls the water to be sprayed to the windshield glass and controls the action of the windshield wiper.

Drawings

Fig. 1 is a flowchart of automatic wiper control methods.

Detailed Description

The present invention is further described in detail below with reference to the attached figures.

The invention provides automatic windshield wiper control systems, including the control unit and gear detecting element, the output end of the detecting element of the gear connects the control unit, the control unit carries out automatic windshield wiper control methods, as shown in fig. 1, when the windshield wiper is opened with the set rotational speed, judge whether the gear changes from the parking gear to the forward gear or the reverse gear according to the vehicle gear information, if yes, the control unit controls the rotational speed of the windshield wiper to be the set rotational speed of setting multiple, wherein the setting multiple is greater than 1.

The system also comprises a rainfall sensor, the output end of the rainfall sensor is connected with the control unit, the control unit stores the calibrated direct proportional linear relation between the rainfall and the rotating speed, and the rotating speed is set to be obtained by comparison according to the calibrated direct proportional linear relation. For example, calibrating the reference speed V of the windshield wiper_baseThe reference rotating speed is linear tables, and the rotating speed is linearly adjusted along with the rainfallThe rotation speed is larger as the rainfall is larger.

When the driver is in gear, the control unit judges that the driver needs to start the vehicle, and at the moment, the V is used_s＝1.1V_baseAnd properly increasing the real-time rotating speed of the windshield wiper and improving the starting visual field of a driver, wherein the th set multiple is 1.1.

In addition, the system also comprises a vehicle speed detection unit, wherein the output end of the vehicle speed detection unit is connected with the control unit, when the wiper is opened at the set rotating speed, the control unit judges whether the vehicle speed is greater than the set vehicle speed according to the vehicle speed, if so, the control unit controls the rotating speed of the wiper to be the set rotating speed of a second set multiple, and the second set multiple is greater than 1. Wherein, the set rotating speed is obtained by comparing the direct proportion linear relation between the rainfall and the rotating speed.

When the vehicle speed is higher and is more than 30km/h, V_s＝1.2V_baseAnd at the moment, the real-time reference rotating speed of the windshield wiper is properly increased, and a good visual field of a driver in high-speed driving is guaranteed, wherein the second set multiple is 1.2, and can be more than, less than or even equal to the th set multiple.

If the vehicle speed is 0, when the wiper is opened at the set rotating speed, the control unit controls the rotating speed of the wiper to be the set rotating speed of a third set multiple, wherein the third set multiple is smaller than 1. When the vehicle is idling stopped in situ, the control unit does not have the speed of the vehicle, and the control unit is used for controlling the wiper reference rotating speed V_baseAdjusting the real-time rotation speed Vs of the windshield wiper to 0.5V_base。

Further, when the vehicle speed is low, the vehicle speed is less than 30km/h, V_s＝V_baseAt the moment, the real-time rotating speed of the windshield wiper is equal to the reference rotating speed of the windshield wiper, and a driver is guaranteed to have a good driving visual field.

The control unit is connected with a heater for heating windshield glass water in a control mode, the input end of the control unit is connected with a frosting detection unit for detecting frosting of a windshield and a temperature sensor for detecting the temperature of the glass water, and the heater can be arranged in a water storage kettle of the glass water.

When the windshield is frosted, the control unit controls the heater to be started, and if the temperature of the glass water is higher than the set temperature, the control unit controls the water to be sprayed to the windshield and controls the windshield wipers to act. The control of spraying water to the windshield glass and controlling the action of the windshield wipers can be automatic control, namely, the control of spraying water and brushing are automatically controlled when frost is detected and the temperature is heated to 25 ℃; the heating control device can also be manually controlled, the control unit only automatically controls heating, and other actions are manually completed by a driver.

The present invention has been described in relation to particular embodiments thereof, but the invention is not limited to the described embodiments. In the thought given by the present invention, the technical means in the above embodiments are changed, replaced, modified in a manner that is easily imaginable to those skilled in the art, and the functions are basically the same as the corresponding technical means in the present invention, and the purpose of the invention is basically the same, so that the technical scheme formed by fine tuning the above embodiments still falls into the protection scope of the present invention.