Windscreen wiper device, in particular for a motor vehicle

Abstract

A windshield wiper device (10), particularly for a motor vehicle, is proposed. It comprises a drive device (14), a control device (16) for controlling the drive device (14), and a wiper blade (18), characterized in that an evaluation means (20) is provided for detecting environmental situations.

Description

Prior ArtThe invention relates to a windshield wiper device according to the preamble of the independent claim.A number of windshield wiper devices for a motor vehicle are already known, which comprise a drive device, a control device for controlling the drive device, and a wiper blade.DISCLOSURE OF THE INVENTIONAdvantages of the InventionThe windshield wiper device according to the invention having the features of the main claim has the advantage that an evaluation means for detecting environmental situations is provided. As a result, the windshield wiper device can be optimally adjusted in accordance with the prevailing environmental situation in order to improve the wiping result.The measures listed in the dependent claims also result in advantageous refinements and improvements of the features specified in the main claim.In a simple, cost-effective and therefore advantageous embodiment, the drive device comprises an electric motor and the evaluation means evaluates motor data of the electric motor.It is particularly advantageous if the current consumption and / or the voltage curve and / or the phase shift are provided as motor data. These data can be used to draw conclusions about the environmental situation in a particularly simple manner.Particularly good detection of the environmental situation is advantageously achieved by a sensor for detecting environmental situations.In a simple, cost-effective and therefore advantageous embodiment, the sensor is designed as an acceleration sensor and / or as an environmental parameter sensor, in particular a temperature, air humidity or solar radiation sensor.It is particularly advantageous here if the sensor is arranged in the wiper blade.In a particularly advantageous embodiment, one of the environmental situations is a current date of the vehicle, in particular the vehicle speed and / or the vehicle acceleration.Furthermore, it is to be regarded as advantageous if a transmission unit is provided for transmitting parameters of the environmental situation to a server unit.DESCRIPTION OF THE DRAWINGSAn exemplary embodiment of the invention is illustrated in the drawing and explained in more detail in the following description. The FIGURE shows a windshield wiping device according to the invention in a schematic illustration.DESCRIPTION OF THE EMBODIMENTSThe FIGURE shows a windshield wiping device 10 according to the invention and a windshield 12 to be wiped in a schematic illustration.The windshield wiper device 10 according to the invention comprises a drive device 14 which is connected to a control device 16.The drive device 14 is connected to a wiper blade 18 and drives the latter in order to wipe dirt and rain from the windshield 12.The drive device 14 is controlled by the control device 16.Furthermore, an evaluation means 20 is provided, which is arranged in the control device 16. The evaluation means 20 serves to detect environmental situations. For this purpose, the evaluation means 20 evaluates motor data which are communicated via a connecting line 22 between the drive device 14 and the control device 16.Here, the current consumption of an electric motor which is part of the drive device 14 is used as motor data. Alternatively, the voltage curve, the phase shift, or another motor characteristic can also be used.Alternatively or additionally, a sensor 24 is provided which detects environmental situations. The sensor 24 is designed as an acceleration sensor, but can also detect other environmental parameters, for example the temperature, the air humidity or the solar radiation.In an alternative embodiment, the sensor 24 can also be arranged in the wiper blade 18. It is likewise possible to provide a further sensor in the control device 16 in addition to the sensor 24 in the wiper blade 18.An environmental situation can be formed here by any environmental parameter that records the environment. Here, for example, the weather represented by weather data, also a different date, in particular data relating to the vehicle, is considered. For example, the vehicle speed and / or the vehicle acceleration can be detected. In this way, for example, jams, slow-moving traffic, stop & go, or other traffic situations can be detected. Similarly, for example, when using an acoustic sensor 24, approaching rescue or police vehicles can be detected.By means of data representing all these environmental situations, the drive device 14 and thus the wiping operation of the wiper blade 18 can be optimally controlled.In the present exemplary embodiment, the control device 16 also comprises a transmission unit 26.The transmission unit 26 transmits the environmental situation or the environmental parameters to a server unit 28 which is arranged remote from the windshield wiper device 10 and communicates with the latter via a wireless connection 30, for example via the mobile radio network.The server unit 28 can likewise transmit information to the control device 16 via the transmission unit 26, which information is taken into account, for example, in the control of the drive device 14.The server device 16 can also transmit this information to other vehicles and, for example, control their windshield wiper device 10 accordingly or evaluate and use the information in another way.Information about the state and / or the behavior of the windshield wiper device 10, for example its wear or abnormalities such as chatter, can also be detected as an environmental situation and the drive device 14 can be controlled accordingly.If, for example, the evaluation means 20 establishes by an acceleration sensor as sensor 24 in the wiper blade 18 that the wiper blade 18 strikes against the edge of the windshield, this information can be used and the control device 16 can control the movement of the wiper blade 18 differently via the drive device 14, for example reduce the pendulum angle or, if chatter of the wiper blade 18 is detected, the drive device 14 can be controlled in such a way that chatter is prevented.If the sensor 24 detects smoke or air pollution at a position, for example, a circulating air flap of the vehicle can be switched to circulating air operation. Via the transmission unit 26 and the server unit 28, this can also be done in the case of vehicles which are still remote and approach the position.

Claims

Windscreen wiper device (10), in particular for a motor vehicle, comprising a drive device (14), a control device (16) for controlling the drive device (14), and a wiper blade (18), characterized in that an evaluation means (20) for detecting environmental situations is provided.Windscreen wiper device (10) according to Claim 1, characterized in that the drive device (14) comprises an electric motor and the evaluation means (20) evaluates motor data of the electric motor.Windscreen wiper device (10) according to Claim 2, characterized in that the current consumption and / or the voltage curve or the phase shift are provided as motor data.Windscreen wiper device (10) according to one of the preceding claims, characterized in that a sensor (24) for detecting environmental situations is provided.Windscreen wiper device (10) according to Claim 4, characterized in that the sensor (24) is designed as an acceleration sensor and / or as an environmental parameter sensor, in particular a temperature, air humidity or solar radiation sensor.Windscreen wiper device (10) according to one of the preceding Claims 4 and / or 5, characterized in that the sensor (24) is arranged in the wiper blade (18).Windscreen wiper device (10) according to one of the preceding claims, characterized in that one of the environmental situations comprises a current vehicle datum, in particular the vehicle speed and / or the vehicle acceleration.Windscreen wiper device (10) according to one of the preceding claims, characterized in that a transmission unit (26) for transmitting environmental parameters of the environmental situation to a server unit (28) is provided, which is connected in particular wirelessly to the control device (16).

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