Patent ID: 8264183
Filing Date: 2012-09-11
Classification: B60S

Abstract:
1. A windshield wiper control unit that controls an operation of a windshield wiper based on a position of an operation member, comprising: an electric value detection unit that detects an electric value that continuously changes based on the position of the operation member; a storage unit that stores position determination ranges that are formed by dividing the variation range of the electric value into multiple non-overlapping electric value ranges, and that correspond one-to-one with multiple positions of the operation member; a setting unit that sets a reference electric value range that is a portion of a variation range of the electric value; a determination unit that determines whether the electric value detected by the electric value detection unit falls within the reference electric value range; and a position determination unit that determines the position of the operation member based on a relationship between the reference electric value range and the position determination ranges, wherein when the determination unit determines that the electric value detected by the electric value detection unit continuously falls outside the reference electric value range for at least a predetermined time period, the setting unit updates the reference electric value range in such a manner that the electric value, which falls outside the pre-update reference electric value range, falls within the post-update reference electric value range.