DE102009040993B4 - Device for operating a wiping and / or rinsing system for a window of a vehicle, vehicle and corresponding method - Google Patents

Abstract

Device (19) for operating a wiping and / or rinsing system (4, 12) for a pane (2, 3) of a vehicle (1), having a control device (20) for controlling a cleaning process of the wiping and / or rinsing installation ( 4, 12), in which the disc (2, 3) of the vehicle (1) with a cleaning liquid (9, 16) of the rinsing system (4, 12) can be acted upon and / or a wiper (5, 6, 13) of the wiper system (4, 12) in contact with the disc (2, 3) is movable relative thereto, wherein the control device (20) is adapted, depending on at least one detected information, a degree of contamination and / or a degree of wetting of the disc ( 2, 3) and to adjust at least one specific parameter of the cleaning process, depending on the determined degree of soiling and / or the degree of wetting, the control device (20) being designed to reduce the degree of soiling during the cleaning process and / or the degree of wetting the disc (2, 3) and to set the at least one specific parameter depending on the degree of soiling and / or the degree of wetting during the cleaning process, characterized in that a predetermined plurality of value combinations for at least two specific parameters of the cleaning process are stored in the control device (20) and the control device (20) is designed to select a value combination of the plurality of value combinations depending on the degree of soiling and / or the degree of wetting and to set the at least two specific parameters according to the selected value combination ,

Description

The invention relates to a device for operating a wiping and / or rinsing system for a window of a vehicle. The device comprises a control device for controlling a cleaning process of the wiping and / or rinsing system, in which the window of the vehicle can be acted upon by a cleaning liquid of the rinsing system and / or a wiper of the wiper system can be moved in contact with the window relative thereto. Depending on the degree of soiling and / or the degree of wetting, the control device may determine at least one specific parameter of the cleaning process, depending on at least one detected information, of a degree of soiling and / or degree of wetting of the pane. The invention also relates to a vehicle having such a device and to a method for operating a wiping and / or rinsing system with which a window of a vehicle is cleaned.

A device for controlling a wiping and / or rinsing system for discs is already out of the document EP 0 932 533 B1 known. A sensor device measures the wetting or soiling of the disk. The wiper and / or rinse system is then turned on when wetting or soiling of the disc is detected, as well as when an ignition key is pressed or the reverse gear is engaged. It is thus ensured that when starting the vehicle and when engaging the reverse gear as a precaution for a clear view through the windows of the vehicle is taken care of. Depending on the degree of wetting and / or the degree of contamination beyond a period may be specified, for which the wiping and / or rinsing system is turned on.

DE102009040993A1 discloses an apparatus for operating a windshield wiper in intermittent operation, comprising at least one sensor which emits a signal for controlling the windscreen wiper depending on the pollution and / or the moisture or rain or rain on a disk to be cleaned, with a signal processing arrangement, the interval between successive wipes depending on the number of signals emitted by the sensor.

EP0932533B1 relates to a device for controlling a wiper and / or washer for discs with a sensor device for measuring the wetting and / or contamination of the disc, a device for detecting the operation of the ignition key or the reverse gear, and a device independent of the switching position of the wiper switch device for actuating the system, then when a) the sensor device detects wetting and / or contamination of the disk, and b) the ignition key is actuated or the reverse gear is engaged. For example, the wiper and / or washer may be turned on for a period of time dictated by the degree of wetting and / or fouling.

DE10307216A1 discloses a method of operating a vehicle windshield wiper-wash system for motor vehicle windshields comprising at least one windshield wiper, a washer unit for spraying cleaning fluid onto the windshield, an electronic control unit, at least one windshield wiper motor, and a windshield wiper fluid feed pump. The wiper speed is adaptively controlled during the cleaning process by the control unit in dependence on driving state and / or environment-dependent input parameters.

It is an object of the invention to take in a device of the type mentioned measures that ensure a reliable and appropriate situation cleaning the disc of the vehicle.

This object is achieved by a device having the features according to claim 1, as well as by a vehicle having the features according to claim 15 and by a method having the features according to claim 16. Advantageous embodiments of the invention are the subject of the dependent claims and the description.

A device according to the invention is designed to operate a wiping and / or rinsing system for a window of a vehicle. The device comprises a control device for controlling a cleaning process of the wiping and / or rinsing system. In the cleaning process, the pane of the vehicle can be acted upon by a cleaning liquid of the rinsing system and / or a wiper of the wiper system can be moved in contact with the pane relative thereto. The control device is designed to determine, depending on at least one detected information, a degree of contamination and / or a degree of wetting of the pane and to set at least one specific parameter of the cleaning process, depending on the determined degree of soiling and / or degree of wetting , Namely, the controller is designed to reduce the degree of contamination during the cleaning process and / or or to determine the degree of wetting of the disc and to adjust the at least one specific parameter depending on the degree of soiling and / or the degree of wetting during the cleaning process, e.g. B. to change a pre-set before the initiation of the cleaning process specific parameters.

In other words, an essential basic idea is, in other words, to monitor the degree of soiling and / or the degree of wetting of the pane during the cleaning process or to determine the cleaning effect and, depending thereon, to set the at least one specific parameter of the cleaning process during the cleaning process, in particular to change. In this way, it is possible to reliably clean the windscreen of the vehicle depending on the situation, namely depending on the particular current pollution and / or wetting of the disc. The approach also has the advantage that resources available for cleaning the disk can be saved. You would namely z. For example, reduce the amount of cleaning fluid and / or the pressure with which the cleaning fluid is dispensed onto the disc with a decreasing degree of contamination; in a non-uniformly soiled disc would z. B. apply only the polluted area of the disc with the cleaning liquid. The resources available for cleaning the pane - whether these are the cleaning liquid or the electrical energy - are thus used as needed, namely only when they are actually needed.

In the present case, a cleaning process is understood as meaning, in particular, the entire process in which the pane is cleaned with the aid of the wiping and / or rinsing system. The cleaning process can thus be divided into a plurality of cycles, in each of which the wiper of the wiper system passes through a train or train pair, namely once in one direction or once in one direction and once in the other direction is moved. It is also possible to provide pauses between the individual cycles of the cleaning process, the duration of which may be adjustable by the control device and during which z. B. the wiper of the wiper system stands still. During the breaks, the washer can also be charged with the cleaning fluid of the rinsing system. The controller may determine the degree of soiling and / or the degree of wetting of the wafer during each cycle and / or between cycles, ie in the breaks. Likewise, the at least one specific parameter of the cleaning process can be set, in particular changed, during the individual cycles and / or between the cycles.

Parametersatz 2 30°C 10 Bar $\mathrm{0,5}\frac{Zyklus}{s}$

Parametersatz 3 40°C 15 Bar $1\frac{Zyklus}{s}$

Parametersatz 4 50°C 20 Bar $2\frac{Zyklus}{s}$

In principle, the control device can set the at least one specific parameter of the cleaning process independently of other specific parameters. With regard to the computational effort, however, it has proved to be particularly advantageous according to the invention if a predetermined multiplicity of value combinations are stored in the control device for at least two specific parameters of the cleaning process. The control device can then, depending on the determined degree of soiling and / or the degree of wetting of the disc, select a value combination of the plurality of value combinations assigned to this degree and set the at least two specific parameters according to the selected value combination. This means that for setting at least two specific parameters of the cleaning process, predetermined parameter sets are stored in the control device and the control device selects a corresponding parameter set depending on the degree of soiling and / or the wetting of the pane. This solution according to the invention can be illustrated by the following table: Temperature of the liquid print Movement speed of the wiper Parameter set 1 20 ° C 5 bar $0.1\frac{Zyklus}{s}$

Parameter set 2 30 ° C 10 bar $0.5\frac{Zyklus}{s}$

Parameter set 3 40 ° C 15 bar $1\frac{Zyklus}{s}$

Parameter set 4 50 ° C 20 bar $2\frac{Zyklus}{s}$

For at least two-in the above table for three-specific parameters of the cleaning process, different combinations of parameter values can therefore be stored, and the control device can have a corresponding one depending on the degree of soiling and / or wetting and / or depending on the type of soiling Select combination of parameter values. Each combination of parameter values-in the above table, each parameter set-is preferably assigned a corresponding cleaning effect. Depending on the degree of soiling and / or wetting and / or depending on the type of contamination, the control device can thus select a corresponding cleaning action for cleaning the window and thus define a combination of parameter values assigned to this cleaning effect. Such an approach requires very little computational effort and yet ensures reliable cleaning of the disc. The combinations of parameter values may also correspond to resource consumption, such as resource consumption. B. energy consumption and / or consumption of the cleaning liquid - are predefined. This means that each combination of parameter values can also be assigned a corresponding consumption of resources. Depending on the degree of soiling and / or the wetting of the disc and / or depending on the type of contamination, the control device can then select such a combination of parameter values, which also provides a resource-saving cleaning process with sufficient cleaning action.

It has been found to be particularly advantageous if the control device during the cleaning process - preferably during a whole period of the cleaning process - the degree of contamination and / or the degree of wetting continuously, d. H. continuously recorded. Then the control device can regulate the at least one specific parameter of the cleaning process during the cleaning process, preferably during an entire period of the cleaning process. This means that the at least one specific parameter is continuously changed during the cleaning process, in particular also during a single cycle, depending on the respective instantaneous degree of soiling and / or the instantaneous degree of wetting of the pane. As a result, the disc can be cleaned very reliable, and it can be achieved very quickly a clear view through the disc. The driver can thus rely on a very quick cleaning of the disc and is thus not distracted by the cleaning process of the road situation. A quick and particularly reliable cleaning of the disc also ensures a high level of safety when driving the vehicle. The regulation of the at least one specific parameter may, for. B. look like that the orientation of a nozzle, by means of which the cleaning liquid is discharged to the disc, is changed continuously and depending on the degree of contamination of different areas of the disc. Depending on the situation, the cleaning liquid is thus dispensed onto different areas of the pane, namely depending on their respective current degree of soiling. However, the regulation of the at least one specific parameter can also take place in such a way that the number of cycles of the cleaning process is changed in a situation-specific manner as a function of the current degree of soiling and / or the degree of wetting. For example, the cleaning process may be terminated when the degree of soiling and / or degree of wetting of the disc is below / below a predetermined threshold level. The regulation of the at least one parameter may additionally or alternatively relate to a pressure with which the cleaning liquid is dispensed onto the pane by means of a nozzle. If a high degree of contamination is found, the cleaning liquid is preferably discharged at a high pressure on the disc. If the degree of soiling decreases, the pressure of discharging the cleaning liquid onto the glass can also be reduced.

In an alternative embodiment for controlling the at least one specific parameter - in which the cleaning process is subdivided into a plurality of cycles, in which the wiper in each case passes through a single train or a train pair - it is provided that the control device during a single cycle or after Completion of a single cycle detects the degree of soiling and / or the degree of wetting of the disk and adjusts the at least one specific parameter for a subsequent cycle depending on it. In other words, the controller may determine the degree of soiling and / or the degree of wetting of the wafer during or after a single movement of the wiper and, depending thereon, adjust the at least one specific parameter for subsequent movement of the wiper. The at least one specific parameter is then preferably no longer changed during the subsequent movement or during the subsequent cycle, it is preferably set once for the subsequent cycle and remains unchanged during this cycle. In this embodiment, a reliable and situation-specific cleaning of the disc is achieved without much control effort or computational effort, the at least one specific parameter can be set once for each cycle and need not be changed.

The control device can also determine the degree of soiling and / or the degree of wetting of the disc before initiating the cleaning process and the at least one specific parameter of the cleaning process depending on the degree of soiling and / or the degree of use before the initiation of the cleaning Set cleaning process. In this embodiment, the at least one parameter is set even before the initiation of the cleaning process and can then be changed during the cleaning process. This procedure has the advantage that the cleaning process is started with an already situation-specific set parameter; the at least one specific parameter is not adjusted in any way before the initiation of the cleaning process, but depending on the current degree of soiling and / or the current degree of wetting of the disk, ie depending on the situation. If necessary, the at least one parameter does not have to be significantly changed after the initiation of the cleaning process, as a result of which the computational effort and the tax expenditure can also be reduced to a minimum.

Thus, the controller may detect the degree of soiling and / or the degree of wetting of the disk in a non-activated cleaning process. The control device can the cleaning process z. B. initiate when the degree of contamination and / or the degree of wetting exceeds a predefined threshold level. The cleaning process is thus turned on in this embodiment, when it is actually required after the actual soiling and / or wetting of the disc. The driver does not have to turn on the cleaning process on a soiled disc himself, he does not need to operate the wiper switch and can focus on the road situation better.

In the embodiment in which the cleaning process is divided into a plurality of cycles, the control means may compare a degree of soiling and / or degree of wetting detected after completing a single cycle with a degree detected at the beginning of that cycle and depending on the result of the Comparison to determine a degree of cleaning progress. The degree of cleaning progress can z. For example, a difference between the degree of soiling and / or wetting after completion of a cycle and the degree of soiling and / or wetting at the beginning of this cycle. Also, depending on the determined degree of cleaning progress, the at least one specific parameter of the cleaning process can be set, in particular changed. For example, the pressure at which the cleaning fluid is dispensed onto the disk can be reduced over time at a relatively high degree of cleaning progress. As another example, the reduction of a temperature of the cleaning liquid at a relatively high degree of cleaning progress may be mentioned here. The determination of the degree of cleaning progress thus allows reliable monitoring of the cleaning effect during the cleaning process. If the degree of cleaning progress does not change during the cleaning process, this is an indication that the best possible cleaning effect has been achieved. On the other hand, an insufficient cleaning progress and thus an impossibility of cleaning the disc can be recognized by the fact that the degree of cleaning progress over a predetermined period of time after initiation of the cleaning process remains below a predetermined threshold level. In such a situation, the controller may interrupt the cleaning process and output an information signal. With this information signal, the driver can be informed that a sufficient cleaning of the disc can not be achieved. The driver does not have to start from an operating error of the wiper and / or rinsing system, he gets information that the disc z. B. can not clean because of the nature of the pollution.

It can be provided that at the beginning of the cleaning process - ie immediately before and / or after the initiation of the cleaning process - a type of contamination of the disc is determined by the control device. In other words, the contamination can be classified by the control device depending on the at least one detected information. The control device can then adjust the particular at least one specific parameter of the cleaning process depending on the type of contamination, in particular change. The type of contamination, the control device z. B. determine based on obtained by an optical sensor device measurement data. The type of contamination can be determined, for example, based on the particle size of individual detected particles and / or based on a transparency of these particles. In the type of pollution can z. B. be distinguished between dust and insects. The dust would z. B. adjust a lower pressure of the cleaning fluid than an insect. Further, upon detecting an insect, the temperature of the liquid can be set correspondingly higher than that of the dust, and the liquid can be focused on the position of the disc where the recognized insect is located. Also, this embodiment ensures reliable cleaning of the disc, and the driver can rest assured that a clear view is achieved by the disc, in particular without the driver has to operate the wiper switch at all.

As already stated above, the switching on of the wiping and / or rinsing installation can take place automatically, namely when the degree of soiling and / or the degree of wetting exceeds a predefined threshold level. But it can also be provided that the driver himself turns on the cleaning process; this can be z. B. done by pressing the wiper switch. Even if the cleaning process is activated by the driver, the at least one specific parameter of the cleaning process can be set, in particular changed, depending on the determined degree of soiling and / or use.

It is preferably a windshield and / or a rear window of a passenger car, which is cleaned by means of the wiper and / or rinsing system / are. But it can also be a headlight lens of a front and / or a rear headlight of a vehicle. However, the disc can also be a side window of the passenger car.

As already stated, the control device determines the degree of soiling and / or the degree of wetting of the pane depending on at least one detected information. The at least one piece of information can, for. B. detected by means of a sensor device and transmitted to the control device. However, the at least one piece of information can also be detected by the control device itself; here it can be z. B. act at a time or a time since a last cleaning process time. The control device preferably determines the degree of soiling and / or the degree of wetting of the pane as a function of measured data on the pane obtained by an optical sensor device. For example, the optical sensor device may comprise a camera which can detect light in a human-visible spectral range and thus record images. The optical sensor device may additionally or alternatively comprise at least one LED sensor with a light-emitting diode and a photodiode and / or an infrared sensor. Depending on the measured data obtained by the optical sensor device, the control device then determines the degree of soiling and / or the degree of wetting of the pane.

In determining the degree of contamination and / or the degree of wetting of the disc but also other information can be considered; In particular, the degree of soiling and / or wetting determined on the basis of measured data of the optical sensor device can be checked for plausibility or checked depending on at least one further piece of information. For example, a speed of the vehicle may be considered here. Depending on the respectively current value of the speed, the control device can plausibilize the degree of soiling and / or the wetting determined on the basis of measured data of the optical sensor device. This means that the measurement data of the optical sensor device alone can be sufficient to determine the degree of soiling and / or the degree of wetting; only the determined degree of pollution and / or use can be made plausible or checked depending on the speed of the vehicle. The device may also include a rain sensor with which a rain intensity can be measured. The controller may also use rainfall information to determine the degree of soiling and / or wetting of the disk. Here, too, the measurement data of the optical sensor device alone may be sufficient, but the degree of contamination and / or wetting based on measured data of the optical sensor device can be checked as a function of the measured rain intensity. The control device may additionally or alternatively take account of a time that has elapsed since a last cleaning process and / or a path traveled by the vehicle since the last cleaning process in determining the degree of soiling and / or wetting of the window. Again, the control device can only make a plausibility check of the degree of soiling and / or wetting determined on the basis of measured data of the optical sensor device. For example, it can be checked by the control device whether a comparatively large degree of contamination determined on the basis of measured data of the optical sensor device is plausible if the time that has elapsed since the last cleaning process is relatively low. The control device may additionally or alternatively take into account a temperature of an environment of the vehicle, in particular plausibility of the determined degree of contamination and / or the degree of wetting depending on the temperature. The control device may additionally or alternatively also receive data from a navigation system of the vehicle and take it into account in determining the degree of soiling and / or the degree of wetting of the panes. For example, a plausibility check of the degree of soiling and / or wetting determined on the basis of measured data of the optical sensor device can be made dependent on a location at which the vehicle is currently located. This can be z. B. depending on the Type of roadway over which the vehicle is driven. If the vehicle is driven through a terrain, so a high degree of contamination of the disc is more likely than z. B. on a country road. The control device can additionally or alternatively also take into account a force exerted on the pane by the wiper upon determination, in particular in the case of a plausibility check, of the degree of soiling and / or the degree of wetting of the pane. Information about the force exerted on the disc can be transmitted to the control device, for example, by a force sensor.

• - einer Geschwindigkeit des Fahrzeugs und/oder
• - einer Regenintensität und/oder
• - einer seit einem letzten Reinigungsprozess vergangenen Zeit und/oder
• - einem seit dem letzten Reinigungsprozess durch das Fahrzeug zurückgelegten Weg und/oder
• - einer Temperatur einer Umgebung des Fahrzeugs und/oder
• - einem Ort, an welchem sich das Fahrzeug jeweils momentan befindet und/oder
• - einer durch den Wischer auf die Scheibe ausgeübten Kraft.

The information given above can also be taken into account by the control device directly when setting the at least one specific parameter of the cleaning process. Thus, the at least one specific parameter of the cleaning process is particularly preferably set as a function of at least one of the following information:

• a speed of the vehicle and / or
• - a rain intensity and / or
• a time past a last cleaning process and / or
• a path traveled by the vehicle since the last cleaning process and / or
• a temperature of an environment of the vehicle and / or
• a place where the vehicle is currently located and / or
• - A force exerted by the wiper on the disc force.

As a specific parameter of the cleaning process, the controller z. For example, a period of the cleaning process and / or a number of cycles of the cleaning process, in each of which the wiper passes through a train or a train pair set. The control device can thus change its duration during the cleaning process, namely depending on the particular current degree of contamination and / or the use of the disc. Thus, the available resources can be saved, because the cleaning process is terminated at such a time when the disc is already clean. Only as many resources are consumed in the cleaning process as is actually required.

Additionally or alternatively, the control device can set a movement speed of a wiper as a specific parameter of the cleaning process. The speed of movement of the wiper can thus be changed during the cleaning process, for. B. be regulated. If z. B. detected by the control device that the degree of wetting of the disc with time is lower, so the speed of movement of the wiper can be reduced accordingly. By doing so, electrical energy consumed for movement of the wiper can be saved or optimally utilized. Namely, the moving speed of the wiper can be optimally adjusted depending on the respective contamination and / or wetting of the wiper.

Additionally or alternatively, the control device can set the amount of cleaning fluid and / or a pressure with which the cleaning fluid is dispensed onto the disc via a nozzle as a specific parameter of the cleaning process. The pressure and / or the amount of the cleaning liquid can thus be adjusted during the cleaning process by the control device, for. B. be regulated. If the disk is heavily soiled in areas, the pressure with which the cleaning fluid is dispensed onto this area of the disk can be set correspondingly high. On the other hand, if the disc is evenly and slightly soiled, the cleaning fluid can be dispensed onto the disc at a comparatively low pressure.

As a specific parameter of the cleaning process, the control device may also preferably adjust the orientation of the nozzle relative to the disk, by means of which the liquid is dispensed onto the disk. Depending on the distribution of the degree of soiling over the disk, the controller may adjust the nozzle relative to the disk so as to be aligned with the soiled area of the disk. The cleaning liquid can thus be saved, it is not spent on the "clean", but on the polluted areas of the disc.

Additionally or alternatively, the control device can set a composition of the cleaning fluid, in particular an amount of water and an amount of at least one additive, as a specific parameter of the cleaning process. The composition of the cleaning liquid can thus also be changed during the cleaning process, namely depending on the respective current level of contamination and / or wetting of the disc. This embodiment also proves to be advantageous if the control device can determine the type of contamination. Depending on the type of contamination - z. As dust or insects - then the composition of the cleaning liquid can be adjusted. Thus, in each case an optimal cleaning effect can be achieved by the wiping and / or rinsing system. When adjusting the composition of the cleaning liquid, one type of the at least one additive can in particular also be selected by the control device.

Last but not least, the control device may additionally or alternatively set a temperature of the cleaning fluid as a specific parameter of the cleaning process. Depending on the determined cleaning effect, the temperature of the cleaning liquid can thus be changed during the cleaning process, so that a desired cleaning effect is achieved.

A vehicle according to the invention, in particular a motor vehicle, more preferably a passenger car, comprises at least one disk, a wiping and / or rinsing system for cleaning the at least one disk and an apparatus according to the invention for operating the wiping and / or rinsing system.

In a method according to the invention for operating a wiping and / or rinsing system, a window of a vehicle is cleaned with the wiping and / or rinsing system. A cleaning process of the wiping and / or rinsing system is initiated by a control device, in which the washer of the vehicle is acted upon by a cleaning liquid of the rinsing system and / or a wiper of the wiper system is moved in contact with the disc relative thereto. A degree of soiling and / or degree of wetting of the disc by the controller during the cleaning process is determined depending on at least one detected information. At least one specific parameter of the cleaning process is set as a function of the determined degree of soiling and / or the degree of wetting by the control device during the cleaning process.

The preferred embodiments presented with reference to the device according to the invention and their advantages apply correspondingly to the vehicle according to the invention and to the method according to the invention.

The invention will now be described with reference to a preferred embodiment, as well as with reference to the accompanying drawings. The single figure shows this in a schematic representation of a passenger car with a device according to an embodiment of the invention.

An illustrated in the figure vehicle 1 is a passenger car according to an embodiment of the invention. The car 1 includes a front windshield 2 as well as a rear window 3 , For wiping and rinsing the windshield 2 is a first wiping and rinsing system 4 provided the two wipers 5 . 6 includes. The wipers 5 . 6 can relative to the windshield 2 to be moved in contact with this. By a sliding movement of the wiper 5 . 6 on the windshield 2 the latter can be cleaned. The first wiping and rinsing system 4 also includes two nozzles 7 . 8th over which a cleaning fluid 9 from a liquid container 10 on the windshield 2 can be issued. The liquid container 10 can be divided into several chambers; There may be water in a main chamber, and further chambers may contain, for example, admixtures with which the water is mixed. The mixture of water with at least one additive then provides the cleaning fluid 9 dar. To drive the wiper 5 . 6 includes the first wiping and rinsing system 4 an electronic device 11 that z. B. may include electronic circuitry and at least one electric motor.

To clean the rear window 3 includes the passenger car 1 a second wiping and rinsing system 12 that a wiper 13 includes. The wiper 13 can at the rear window 3 slide or in contact with the rear window 3 be moved relative to it. In addition, the second wiping and rinsing system includes 12 also two nozzles 14 . 15 over which a cleaning fluid 16 from a liquid container 17 on the stern disc 3 can be issued. Likewise, the liquid container 17 have a plurality of chambers, namely a main chamber with water and at least one additional chamber for an additive. To drive the wiper 13 includes the second wiping and rinsing system 12 An institution 18 that z. B. may include electronic circuitry and at least one electric motor.

The car 1 includes a device 19 for operating the first and the second wiping and rinsing system 4 . 12 , The device 19 comprises a control device 20 that z. B. may include a signal processor and / or a microcontroller. The device 19 also includes a first camera 21 , with which pictures over the windscreen 2 can be recorded. With the control device 2 is also a second camera 22 coupled, the pictures on the rear window 3 records. Image data from the first and second cameras 21 . 22 be to the controller 20 transmitted and processed by them.

The device 19 also includes a rain sensor 23 as well as an outside temperature sensor 24 for measuring a temperature of an environment of the passenger car 1 , Measurements of the rain sensor 23 and the outside temperature sensor 24 be to the controller 20 transmitted. The control device 20 also receives other signals S, the control device 20 of other systems of the passenger car 1 be transmitted. The signals S can z. B. information about the current speed of the car 1 and / or information from a passenger car navigation system 1 include.

The device 19 , and more precisely, the controller 20 , can both the first and the second wiping and rinsing 4 . 12 drive. In the embodiment of a common device 19 for the two wiping and rinsing systems 4 . 12 went out. Likewise, two separate devices 19 be provided, namely in each case a device 19 for both the first wiping and rinsing system 4 as well as the second wiping and rinsing system 12 ,

So the controller can 20 the respective cleaning processes of the windshield 2 and the rear window 3 control. In a single cleaning process, the wipers move 5 . 6 . 13 once and once. This reciprocation is referred to as a cycle and may be performed several times during a cleaning process. There may also be breaks between individual cycles of the cleaning process.

The control device 20 can the first and second wiping and rinsing 4 . 12 drive separately from each other. This means that the control device the respective cleaning processes of the windshield 2 and the rear window 3 can control separately and independently of each other.

• - eine Zeitdauer des jeweiligen Reinigungsprozesses und/oder eine Anzahl von Zyklen des jeweiligen Reinigungsprozesses, in denen die Wischer 5, 6 bzw. der Wischer 13 einmal hin und her bewegt werden,
• - eine Bewegungsgeschwindigkeit der Wischer 5, 6, 13,
• - die Menge der jeweiligen Reinigungsflüssigkeit 9, 16,
• - einen Druck, mit welchem die jeweilige Reinigungsflüssigkeit 9, 16 mittels der zugeordneten Düsen 7, 8 bzw. 14, 15 auf die zugeordnete Scheibe 2 bzw. 3 ausgegeben wird,
• - die Zusammensetzung der jeweiligen Reinigungsflüssigkeit 9, 16,
• - die Art von zumindest einem Zusatzmittel der Reinigungsflüssigkeit 9, 16,
• - eine Temperatur der jeweiligen Reinigungsflüssigkeit 9, 16 und
• - eine Ausrichtung der jeweiligen Düsen 7, 8 bzw. 14, 15 bezüglich der zugeordneten Scheibe 2, 3.

The control device 20 can set the following specific parameters of the respective cleaning processes:

• - A period of the respective cleaning process and / or a number of cycles of the respective cleaning process in which the wiper 5 . 6 or the wiper 13 to be moved back and forth once,
• - A speed of movement of the wiper 5 . 6 . 13 .
• - The amount of each cleaning fluid 9 . 16 .
• - A pressure with which the respective cleaning fluid 9 . 16 by means of the associated nozzles 7 . 8th or. 14 . 15 on the assigned disc 2 or. 3 is spent
• - The composition of the respective cleaning fluid 9 . 16 .
• - The nature of at least one additive of the cleaning fluid 9 . 16 .
• a temperature of the respective cleaning fluid 9 . 16 and
• - An orientation of the respective nozzles 7 . 8th or. 14 . 15 with respect to the associated disc 2 . 3 ,

These specific parameters of the respective cleaning process, the control device 20 set once before initiating the cleaning process and initiate the cleaning process with parameters set in this way. After initiating the cleaning process, ie during the cleaning process, the control device 20 These cleaning parameters also change, eg regulate. The setting of the parameters, as well as the change of the parameters takes place in the embodiment depending on a degree of contamination and / or a degree of wetting of the windshield 2 or the rear window 3 , And that determines the controller 20 depending on the image data of the cameras 21 . 22 - And possibly also dependent on the information contained in the signals S and depending on the measurement data of the sensors 23 . 24 - the degree of soiling and / or wetting of the windscreen 2 and the rear window 3 ,

If the cleaning process is not activated, the control device checks 20 whether the degree of soiling and / or wetting exceeds a predetermined threshold level. If the degree of wetting and / or the degree of soiling exceeds the predefined threshold level, then the respective cleaning process - be it the windscreen 2 and / or the rear window 3 - initiated. If the degree of contamination exceeds the threshold level, both the wipers will be activated 5 . 6 or. 13 put into operation as well as the cleaning fluid 9 or. 16 to the respective disc 2 . 3 output. Exceeds the degree of wetting the windshield 2 or the rear window 3 the threshold, so only the wiper 5 . 6 or. 13 be put into operation without the cleaning fluid 9 or. 16 is issued.

The control device also determines the degree of soiling and / or the wetting of the windshield during the respective cleaning process 2 or the rear window 3 , Depending on the current degree of contamination and / or wetting, the control device changes 2 the above-mentioned specific parameters of the cleaning process, namely during the cleaning process. The change of the parameters can also during the individual cycles, ie during the movement of the wiper 5 . 6 . 13 , respectively. Additionally or alternatively, the parameters between the individual cycles can be changed. When setting the parameters, different procedures are meaningfully possible. For example, the parameters may be regulated depending on the determined level of soiling and / or wetting. Alternatively, they may be fixed for a single cycle depending on the degree of soiling and / or wetting determined during or after completion of a previous cycle.

The control device 20 can also - especially at the beginning of a cleaning process - a kind of pollution of the windshield 2 or the rear window 3 depending on the measurement data of the cameras 21 . 22 determine and also adjust depending on the type of contamination, the above parameters of the cleaning processes. For example, the control device 20 the pressure of the cleaning fluid 9 . 16 depending on whether the pollution is dust or insects.

The control device 20 also determines a degree of cleaning progress during the cleaning processes. To determine the cleaning progress, the control device 20 compare a level of pollution and / or level of wetting, measured at the conclusion of a single cycle, with a level recorded at the beginning of that cycle. Depending on the result of this comparison, the control device 20 then determine the degree of cleaning progress. If, for example, no sufficient cleaning progress is detected after a predetermined period of time has elapsed after the cleaning process has been initiated, then the cleaning process can be interrupted and the control device 20 can output an information signal. With this, the driver can be informed that no sufficient cleaning effect can be achieved. If, on the other hand, a relatively large cleaning progress is detected immediately after the initiation of the cleaning process and this does not change after a certain period of time has passed, this is a sign that no better cleaning effect can be achieved and the pane 2 . 3 For example, it is already clean.

Overall, therefore, a device 19 provided with which a wiping and / or rinsing system 4 . 12 of a vehicle 1 with a view to reliable cleaning of a pane 2 . 3 situation-specific can be controlled. The device 19 detects during a cleaning process, the cleaning effect - namely the degree of contamination and / or wetting of the disc 2 . 3 - and sets specific parameters of the cleaning process depending on the cleaning effect. Thus, the cleaning effect can be continuously monitored during the cleaning process, and the specific parameters of the cleaning process can be adjusted according to the situation, in particular changed.

Claims (16)

Device (19) for operating a wiping and / or rinsing system (4, 12) for a pane (2, 3) of a vehicle (1), having a control device (20) for controlling a cleaning process of the wiping and / or rinsing installation ( 4, 12), in which the disc (2, 3) of the vehicle (1) with a cleaning liquid (9, 16) of the rinsing system (4, 12) can be acted upon and / or a wiper (5, 6, 13) of the wiper system (4, 12) in contact with the disc (2, 3) is movable relative thereto, wherein the control device (20) is adapted, depending on at least one detected information, a degree of contamination and / or a degree of wetting of the disc ( 2, 3) and to adjust at least one specific parameter of the cleaning process, depending on the determined degree of soiling and / or the degree of wetting, the control device (20) being designed to reduce the degree of soiling during the cleaning process and / or the degree of wetting the disc (2, 3) and to set the at least one specific parameter depending on the degree of soiling and / or the degree of wetting during the cleaning process, characterized in that a predetermined plurality of value combinations for at least two specific parameters of the cleaning process in the Control means (20) are stored and the control device (20) is adapted to select depending on the degree of contamination and / or the degree of wetting a combination of values from the plurality of value combinations and set the at least two specific parameters according to the selected value combination. Device (19) according to Claim 1 , characterized in that the control device (20) is adapted to continuously detect the degree of soiling and / or the degree of wetting during the cleaning process and to regulate the at least one specific parameter of the cleaning process during the cleaning process. Device (19) according to Claim 1 characterized in that the cleaning process is subdivided into a plurality of cycles in which the wiper (5, 6, 13) passes through a single train or train pair, respectively, and the control device (20) is adapted during a single cycle or upon completion of a single cycle, detecting the degree of fouling and / or the degree of wetting of the wheel (2, 3) and, depending on this, adjusting the at least one specific parameter for a subsequent cycle. Device (19) according to any one of the preceding claims, characterized in that the control device (20) is adapted to determine the degree of soiling and / or the degree of wetting of the disc (2, 3) and even before the initiation of the cleaning process adjust the at least one specific parameter of the cleaning process depending on the degree of soiling and / or the degree of wetting before initiating the cleaning process. Device (19) according to any one of the preceding claims, characterized in that the cleaning process is subdivided into a plurality of cycles in which the wiper each passes through a single train or train pair, and the control device (20) is designed to terminate one of a single cycle, to compare the level of soiling and / or level of wetting with a level detected at the beginning of that cycle, and to determine a degree of cleaning progress, depending on the result of the comparison. Device (19) according to Claim 5 , characterized in that the control device (20) is adapted to interrupt the cleaning process when, over a predetermined period of time after initiation of the cleaning process, the degree of cleaning progress remains below a predetermined threshold level. Device (19) according to one of the preceding claims, characterized in that the control device (20) is designed to detect the degree of soiling and / or the degree of wetting of the disc in an unactivated cleaning process and then initiate the cleaning process, if the degree of soiling and / or the degree of wetting exceeds a predefined threshold level. Device (19) according to any one of the preceding claims, characterized in that the control device (20) is adapted to determine before and / or after the initiation of the cleaning process, a type of contamination of the disc and the at least one specific parameter depending on the type to stop the pollution. Device (19) according to any one of the preceding claims, characterized in that the control device (20) is adapted to the degree of contamination and / or the degree of wetting in dependence on by an optical sensor device (21, 22) obtained measurement data on the Slice (2, 3) to determine. Device (19) according to one of the preceding claims, characterized in that the control device (20) is adapted to set at least one of the following specific parameters of the cleaning process: a duration of the cleaning process and / or a number of cycles of the cleaning process each of the wipers (5, 6, 13) passes through a train or train pair and / or - a speed of movement of the wiper (5, 6, 13) and / or - the amount of cleaning liquid (9, 16) and / or - a pressure with which the cleaning liquid (9, 16) is to be dispensed onto the pane (2, 3) by means of a nozzle (7, 8, 14, 15), and / or - a composition of the cleaning liquid (9, 16), in particular an amount of water and an amount of at least one additive, and / or - a kind of the at least one additive and / or - a temperature of the cleaning liquid (9, 16). Device (19) according to one of the preceding claims, characterized in that the control device (20) is adapted to set the amount of cleaning fluid and a pressure with which the cleaning fluid is dispensed to the disc via a nozzle as specific parameters of the cleaning process , Device (19) according to one of the preceding claims, characterized in that the control device (20) is adapted to set at least the following three specific parameters of the cleaning process: - a temperature of the cleaning liquid (9, 16), - a pressure with which the Cleaning liquid (9, 16) by means of a nozzle (7, 8, 14, 15) on the disc (2, 3) is output, and - a movement speed of the wiper (5, 6, 13). Device (19) according to one of the preceding claims, characterized in that a corresponding cleaning effect is assigned to each combination of parameter values. Device (19) according to one of the preceding claims, characterized in that the combinations of parameter values corresponding to a resource consumption, in particular energy consumption and / or consumption of the cleaning liquid, are predefined. Vehicle (1) with at least one disc (2, 3), with a wiping and / or rinsing system (4, 12) for cleaning the at least one disc (2, 3), and with a device (19) for operating the wiper - And / or rinsing system (4, 12) according to any one of the preceding claims. Method for operating a wiping and / or rinsing installation (4, 12), with which a pane (2, 3) of a vehicle (1) is cleaned, with the steps: - initiating a cleaning process of the wiping and / or rinsing installation (4 , 12), in which the disc (2, 3) of the vehicle (1) with a cleaning liquid (9, 16) of the rinsing system (4, 12) is acted upon and / or a wiper (5, 6, 13) of the wiper system ( 4, 12) is moved in contact with the disc (2, 3) relative thereto by a control means (20), - determining a degree of soiling and / or degree of wetting of the disc (2, 3) by the control means during the cleaning process depending on at least one detected information and - adjusting at least one specific parameter of the cleaning process depending on the determined degree of soiling and / or the degree of wetting by the control device (20) during the cleaning process, characterized in that e In a predetermined plurality of value combinations for at least two specific parameters of the cleaning process are stored in the control device (20) and the control device (20) is designed, depending on the degree of contamination and / or the degree of wetting, a combination of values of the plurality of value combinations and to set the at least two specific parameters according to the selected value combination.

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