Device for controlling a windscreen wiping system

Abstract

Abstract A device for controlling a windscreen wiping system is proposed, which consists essentially of a switch arrangement (1), an optoelectronic sensor device (2) and a switch arrangement (3). Using the switch arrangement (1), firstly the sensor device (2) or the switch arrangement (3) and secondly a drive motor (4) which actuates the windscreen wiper blades (5) are activated. The drive motor (4) here is assigned a switching contact device (6) by means of which it is possible to detect the parked position of the windscreen wiper blades (5). So that the frequency of the wiping cycle can be set in a particularly sensitive manner to the states of the precipitation present on the windscreen (7) which change in terms of quality and/or quantity, the windscreen wiping system is provided with means for detecting the last wiping process which brings about a last cleaning of the measurement area of the sensor device (2) and, for the purpose of evaluating the precipitation present on the windscreen (7), only those signals which are output by the sensor device (2) to the circuit arrangement (3) are used to influence the drive motor (4), the said signals being generated by the sensor device (2) starting from the time shortly after the last wiping process until the initiation of a new wiping cycle. <IMAGE>

Inventors

• 👤 Jürgen Levers

Bibliographic Details