CN104309582A - Method and system for operating front windscreen wiper - Google Patents
Method and system for operating front windscreen wiper Download PDFInfo
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- CN104309582A CN104309582A CN201410659086.9A CN201410659086A CN104309582A CN 104309582 A CN104309582 A CN 104309582A CN 201410659086 A CN201410659086 A CN 201410659086A CN 104309582 A CN104309582 A CN 104309582A
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- speed
- motor vehicle
- grade
- windscreen wiper
- current time
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0896—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to a vehicle driving condition, e.g. speed
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a method and a system for operating a front windscreen wiper. The method for operating the front windscreen wiper comprises obtaining a front windscreen wiper gear signal, obtaining the speed of a vehicle at the present moment and the speed of the vehicle at the last moment, determining the change state of the speed according to the speed at the present moment and the speed at the last moment, determining the present speed grade according to the speed at the present moment and the change state of the speed, and executing a corresponding operation according to the front windscreen wiper gear signal and the speed grade. Compared with the prior art, the method for operating the front windscreen wiper has better instantaneity and accuracy, and can be implemented automatically by use of a vehicle body network and a vehicle body system without mounting a large number of other devices such as rain sensors, and therefore, the cost is greatly reduced, the service is more intelligent, and the driving stress of a driver in adverse weather is greatly reduced. Besides, in case of a wrong signal and other emergency situations disadvantageous for driving, corresponding measures also are adopted, and therefore, the method and the system for operating the front windscreen wiper are higher in safety coefficient and wider in application range.
Description
Technical field
The present invention relates to field of automobile electronic control, particularly relate to a kind of method and system of front wiper operation operation.
Background technology
In order in sleety weather, provide a visual field clearly to chaufeur, ensure the safety of driving, the front windshield of vehicle is all provided with front windscreen wiper system, to guarantee that the sleet on front windshield can be removed timely.In prior art, the wiper intermittent time of front windscreen wiper mostly regulates with rainfall size, and this kind of regulative mode relies on rain sensor to realize, and in order to improve accuracy, the installation quantity of usual rain sensor is more, and cost is relatively high.And the use of rain sensor also has limitation, such as dust storm, the weather conditions of snow mist are descended to travel, and rain sensor just loses meaning.
Summary of the invention
In order to solve the problems of the technologies described above, the invention discloses the method and system of a kind of front wiper operation operation, solving prior art cost high, field of application is restricted, problem that real-time accuracy is not high.
According to one aspect of the present invention, provide a kind of method of front wiper operation operation, comprising:
Windscreen wiper gear signal before obtaining;
Obtain the current time speed of a motor vehicle of vehicle and a upper moment speed of a motor vehicle;
The variable condition of the speed of a motor vehicle is judged according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle;
Variable condition according to the described current time speed of a motor vehicle and the speed of a motor vehicle judges current speed of a motor vehicle grade;
Corresponding operation is performed according to described front windscreen wiper gear signal and described speed of a motor vehicle grade.
Further, also comprise before windscreen wiper gear signal before obtaining:
Wiper switch signal before obtaining;
When described front wiper switch signal is for opening, run according to pre-set velocity according to windscreen wiper before described front wiper switch signal control.
Wherein, described front windscreen wiper gear signal comprises: the first gear (shelves 1), the second gear (shelves 2), third gear (shelves 3), fourth speed position (shelves 4) and fifth speed position (shelves 5).
Particularly, judge that the step of the variable condition of the speed of a motor vehicle comprises according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle:
Obtain less than current vehicle speed value;
Judge that speed of a motor vehicle grade is the 3rd speed of a motor vehicle grade (V3).
Particularly, judge that the step of the variable condition of the speed of a motor vehicle comprises according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle:
Obtain the vehicle speed value A of current time;
Obtained the vehicle speed value B in a upper moment;
Calculated the vehicle speed value A of described current time and the difference of the vehicle speed value B in a described upper moment;
Judge that the variable condition of the speed of a motor vehicle is as accelerating or slowing down according to described difference.
Particularly, judge that the step of current speed of a motor vehicle grade comprises according to the variable condition of the described current time speed of a motor vehicle and the speed of a motor vehicle:
The vehicle speed value A of described current time and speed of a motor vehicle grade synopsis contrast by the variable condition according to the speed of a motor vehicle;
Speed of a motor vehicle grade is obtained according to contrasting with the described speed of a motor vehicle grade synopsis comparing result obtained;
Wherein, described speed of a motor vehicle grade synopsis comprises: acceleration mode speed of a motor vehicle grade synopsis and deceleration regime speed of a motor vehicle grade synopsis.
Wherein, described speed of a motor vehicle grade comprises: the first speed of a motor vehicle grade (V1), the second speed of a motor vehicle grade (V2), the 3rd speed of a motor vehicle grade (V3), the 4th speed of a motor vehicle grade (V4), the 5th speed of a motor vehicle grade (V5) and the 6th speed of a motor vehicle grade (V6).
Particularly, the described step performing corresponding operation according to described front windscreen wiper gear signal and described speed of a motor vehicle grade comprises:
Obtain speed of a motor vehicle level signal;
Described front windscreen wiper gear signal and speed of a motor vehicle level signal and intermittent time synopsis are contrasted;
Contrast according to described intermittent time synopsis the comparing result obtained, before controlling, windscreen wiper runs according to the intermittent time of correspondence.
According to another aspect of the present invention, provide a kind of front wiper operation operating system, comprising:
Combined switch, front rain shaving electrical machine, CAN, ABS system and car body controller; Wherein, described car body controller is connected by wire with described front rain shaving electrical machine; For obtaining front windscreen wiper gear signal;
Described front rain shaving electrical machine is connected by CAN with described ABS system; For obtaining the current time speed of a motor vehicle of vehicle and a upper moment speed of a motor vehicle, judging the variable condition of the speed of a motor vehicle according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle, judging current speed of a motor vehicle grade according to the variable condition of the described current time speed of a motor vehicle and the speed of a motor vehicle;
Described front rain shaving electrical machine is connected by wire with described car body controller, for performing corresponding operation according to described front windscreen wiper gear signal and described speed of a motor vehicle grade.
The invention has the beneficial effects as follows:
Technical scheme of the present invention obtains parameters value by vehicle body network, has real-time and accuracy relative to prior art.And when current windscreen wiper enters interval shelves, for run into spurious signal (be invalid as vehicle speed signal or lose communication with speed of a motor vehicle CAN network signal) etc. be unfavorable for the emergency situations of driving safety time, system can automatically perform preset gear, avoids the potential safety hazard brought because of emergency situations.And after front windscreen wiper system switch opens, before confiscating vehicle speed signal, also can automatically perform preset gear, to ensure that front windscreen wiper normally works.Effectively raise the safety travelled in special weather.
Accompanying drawing explanation
Fig. 1 is the workflow diagram of the method for wiper operation operation front described in the embodiment of the present invention.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 1, in embodiments of the invention, a kind of method of front wiper operation operation comprises:
Step 1, windscreen wiper gear signal before obtaining;
Step 2, obtains the current time speed of a motor vehicle of vehicle and a upper moment speed of a motor vehicle;
Step 3, judges the variable condition of the speed of a motor vehicle according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle;
Step 4, the variable condition according to the described current time speed of a motor vehicle and the speed of a motor vehicle judges current speed of a motor vehicle grade;
Step 5, performs corresponding operation according to described front windscreen wiper gear signal and described speed of a motor vehicle grade.
In the above embodiment of the present invention, first windscreen wiper gear signal before obtaining, then the current time speed of a motor vehicle of vehicle and a upper moment speed of a motor vehicle is obtained, the mode of difference is made by described current time vehicle speed value and a described upper moment vehicle speed value, calculate the variable condition of the speed of a motor vehicle, variable condition according to current vehicle speed and current vehicle speed judges current speed of a motor vehicle grade, and performs corresponding operation according to the described front windscreen wiper gear signal obtained and described speed of a motor vehicle grade.
Particularly, also comprise before windscreen wiper gear signal before obtaining:
Wiper switch signal before obtaining;
When described front wiper switch signal is for opening, run according to pre-set velocity according to windscreen wiper before described front wiper switch signal control.
In the above embodiment of the present invention, when described wiper switch is in ON shelves, the wiper switch signal of acquisition is opening, just can perform the action run according to pre-set velocity according to windscreen wiper before described front wiper switch signal control.And after entering intermittent condition first, front rain blowing controlled system drives windscreen wiper to leave stop bit, and low cruise, do not perform intermittent time in this process.After windscreen wiper enters stop bit again, start to perform windscreen wiper low speed according to default intermittent time and export.
Wherein, described front windscreen wiper gear signal comprises: the first gear (shelves 1), the second gear (shelves 2), third gear (shelves 3), fourth speed position (shelves 4) and fifth speed position (shelves 5).
Windscreen wiper gear of the present invention comprises five gears, and wherein four is effective gear, and one is invalid gear, and invalid gear represents that the gear resistance value that rain blowing controlled system judges does not meet logical definition.
Particularly, judge that the step of the variable condition of the speed of a motor vehicle comprises according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle:
Obtain less than current vehicle speed value;
Judge that speed of a motor vehicle grade is the 3rd speed of a motor vehicle grade (V3).
In actual applications, can run into some emergency situations, such as can cause obtaining with CAN lost contact or some other odjective cause and input less than actv. vehicle speed signal, now system can automatically perform default speed gear.This method efficiently solves the problem because of windscreen wiper system operating interruptions before causing with the odjective cause such as CAN lost contact, improves the safety factor that adverse weather is driven.
Particularly, judge that the step of the variable condition of the speed of a motor vehicle comprises according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle:
Obtain the vehicle speed value A of current time;
Obtained the vehicle speed value B in a upper moment;
Calculated the vehicle speed value A of described current time and the difference of the vehicle speed value B in a described upper moment;
Judge that the variable condition of the speed of a motor vehicle is as accelerating or slowing down according to described difference.
The present invention is poor according to the vehicle speed value A of described current time and the vehicle speed value B in a described upper moment, thus judges that the variable condition of the described speed of a motor vehicle is as accelerating or deceleration regime, so that the carrying out of speed of a motor vehicle grade determining step.This kind of method of calculating has real-time and accuracy.
Wherein, judge that the step of current speed of a motor vehicle grade comprises according to the variable condition of the described current time speed of a motor vehicle and the speed of a motor vehicle:
The vehicle speed value A of described current time and speed of a motor vehicle grade synopsis contrast by the variable condition according to the speed of a motor vehicle;
Speed of a motor vehicle grade is obtained according to contrasting with the described speed of a motor vehicle grade synopsis comparing result obtained;
Wherein, described speed of a motor vehicle grade synopsis comprises: acceleration mode speed of a motor vehicle grade synopsis and deceleration regime speed of a motor vehicle grade synopsis.
Wherein, described speed of a motor vehicle grade comprises: the first speed of a motor vehicle grade (V1), the second speed of a motor vehicle grade (V2), the 3rd speed of a motor vehicle grade (V3), the 4th speed of a motor vehicle grade (V4), the 5th speed of a motor vehicle grade (V5) and the 6th speed of a motor vehicle grade (V6).
In the above embodiment of the present invention, the variable condition of the described speed of a motor vehicle is divided into acceleration mode and deceleration regime, the object obtaining the variable condition of the described speed of a motor vehicle is to judge described speed of a motor vehicle grade, wherein, described speed of a motor vehicle grade comprises the first speed of a motor vehicle grade (V1), the second speed of a motor vehicle grade (V2), the 3rd speed of a motor vehicle grade (V3), the 4th speed of a motor vehicle grade (V4), the 5th speed of a motor vehicle grade (V5) and the 6th speed of a motor vehicle grade (V6) six grades.
Described speed of a motor vehicle grade is different at the vehicle speed value that acceleration mode and deceleration regime are corresponding, and the judgement of the speed of a motor vehicle grade travelled under acceleration mode needs the described current time speed of a motor vehicle and table 1 (i.e. acceleration mode speed of a motor vehicle grade synopsis) carry out contrasting thus obtain the speed of a motor vehicle grade of current time;
Table 1 acceleration mode speed of a motor vehicle grade synopsis
Table 2 deceleration regime speed of a motor vehicle grade synopsis
And when the speed of a motor vehicle is the state of slowing down, the judgement of speed of a motor vehicle grade needs the described current time speed of a motor vehicle and table 2 (i.e. deceleration regime speed of a motor vehicle grade synopsis) to contrast, thus obtain the speed of a motor vehicle grade of the current time speed of a motor vehicle.
Particularly, the described step performing corresponding operation according to described front windscreen wiper gear signal and described speed of a motor vehicle grade comprises:
Obtain speed of a motor vehicle level signal;
Described front windscreen wiper gear signal and speed of a motor vehicle level signal and intermittent time synopsis are contrasted;
Contrast according to described intermittent time synopsis the comparing result obtained, before controlling, windscreen wiper runs according to the intermittent time of correspondence.
According to another aspect of the present invention, provide a kind of wiper operation operating system, comprising:
Combined switch, front rain shaving electrical machine, CAN, ABS system and car body controller; Wherein, described car body controller is connected by wire with described front rain shaving electrical machine; For obtaining front windscreen wiper gear signal;
Described front rain shaving electrical machine is connected by CAN with described ABS system; For obtaining the current time speed of a motor vehicle of vehicle and a upper moment speed of a motor vehicle, judging the variable condition of the speed of a motor vehicle according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle, judging current speed of a motor vehicle grade according to the variable condition of the described current time speed of a motor vehicle and the speed of a motor vehicle;
Described front rain shaving electrical machine is connected by wire with described car body controller, for performing corresponding operation according to described front windscreen wiper gear signal and described speed of a motor vehicle grade.
Technical scheme of the present invention obtains parameters value by vehicle body network, has real-time and accuracy relative to prior art.And when current windscreen wiper enters interval shelves, for when running into the emergency situations of spurious signal (be invalid as vehicle speed signal or lose communication with speed of a motor vehicle CAN network signal), system can automatically perform preset gear, avoids the potential safety hazard brought because of emergency situations.And after front windscreen wiper system switch opens, before confiscating vehicle speed signal, also can take to perform preset gear voluntarily, to ensure that front windscreen wiper normally works.Effectively raise the safety travelled in special weather.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a method for wiper operation operation before, is characterized in that, comprising:
Windscreen wiper gear signal before obtaining;
Obtain the current time speed of a motor vehicle of vehicle and a upper moment speed of a motor vehicle;
The variable condition of the speed of a motor vehicle is judged according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle;
Variable condition according to the described current time speed of a motor vehicle and the speed of a motor vehicle judges current speed of a motor vehicle grade;
Corresponding operation is performed according to described front windscreen wiper gear signal and described speed of a motor vehicle grade.
2. the method for front wiper operation operation as claimed in claim 1, is characterized in that, also comprise before obtaining before windscreen wiper gear signal:
Wiper switch signal before obtaining;
When described front wiper switch signal is for opening, run according to pre-set velocity according to windscreen wiper before described front wiper switch signal control.
3. the method for front wiper operation operation as claimed in claim 1, it is characterized in that, described front windscreen wiper gear signal comprises: the first gear, the second gear, third gear, fourth speed position and fifth speed position.
4. the method for front wiper operation operation as claimed in claim 1, is characterized in that, judge that the step of the variable condition of the speed of a motor vehicle comprises according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle:
Obtain less than current vehicle speed value;
Judge that speed of a motor vehicle grade is the 3rd speed of a motor vehicle grade.
5. the method for front wiper operation operation as claimed in claim 1, is characterized in that, judge that the step of the variable condition of the speed of a motor vehicle comprises according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle:
Obtain the vehicle speed value A of current time;
Obtained the vehicle speed value B in a upper moment;
Calculated the vehicle speed value A of described current time and the difference of the vehicle speed value B in a described upper moment;
Judge that the variable condition of the speed of a motor vehicle is as accelerating or slowing down according to described difference.
6. the method for front wiper operation operation as claimed in claim 1, it is characterized in that, the variable condition according to the described current time speed of a motor vehicle and the speed of a motor vehicle judges that the step of current speed of a motor vehicle grade comprises:
The vehicle speed value A of described current time and speed of a motor vehicle grade synopsis contrast by the variable condition according to the speed of a motor vehicle;
Speed of a motor vehicle grade is obtained according to contrasting with the described speed of a motor vehicle grade synopsis comparing result obtained;
Wherein, described speed of a motor vehicle grade synopsis comprises: acceleration mode speed of a motor vehicle grade synopsis and deceleration regime speed of a motor vehicle grade synopsis.
7. the method for front wiper operation operation as claimed in claim 6, it is characterized in that, described speed of a motor vehicle grade comprises: the first speed of a motor vehicle grade, the second speed of a motor vehicle grade, the 3rd speed of a motor vehicle grade, the 4th speed of a motor vehicle grade, the 5th speed of a motor vehicle grade and the 6th speed of a motor vehicle grade.
8. the method for wiper operation operation before as claimed in claim 1, is characterized in that, the described step performing corresponding operation according to described front windscreen wiper gear signal and described speed of a motor vehicle grade comprises:
Obtain speed of a motor vehicle level signal;
Described front windscreen wiper gear signal and speed of a motor vehicle level signal and intermittent time synopsis are contrasted;
Contrast according to described intermittent time synopsis the comparing result obtained, before controlling, windscreen wiper runs according to the intermittent time of correspondence.
9. before, a wiper operation operating system, is characterized in that, comprising:
Combined switch, front rain shaving electrical machine, CAN, ABS system and car body controller; Wherein, described car body controller is connected by wire with described front rain shaving electrical machine; For obtaining front windscreen wiper gear signal;
Described front rain shaving electrical machine is connected by CAN with described ABS system; For obtaining the current time speed of a motor vehicle of vehicle and a upper moment speed of a motor vehicle, judging the variable condition of the speed of a motor vehicle according to the described current time speed of a motor vehicle and a described upper moment speed of a motor vehicle, judging current speed of a motor vehicle grade according to the variable condition of the described current time speed of a motor vehicle and the speed of a motor vehicle;
Described front rain shaving electrical machine is connected by wire with described car body controller, for performing corresponding operation according to described front windscreen wiper gear signal and described speed of a motor vehicle grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410659086.9A CN104309582A (en) | 2014-11-18 | 2014-11-18 | Method and system for operating front windscreen wiper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410659086.9A CN104309582A (en) | 2014-11-18 | 2014-11-18 | Method and system for operating front windscreen wiper |
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| Publication Number | Publication Date |
|---|---|
| CN104309582A true CN104309582A (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410659086.9A Pending CN104309582A (en) | 2014-11-18 | 2014-11-18 | Method and system for operating front windscreen wiper |
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Cited By (1)
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| CN115257635A (en) * | 2022-07-29 | 2022-11-01 | 中国第一汽车股份有限公司 | Windscreen wiper control method, device, equipment and medium applied to vehicle |
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Application publication date: 20150128 |