| 摘要 |
<p>A water drop sensor (20) comprises a pair of electrodes (21,22) disposed in association with a portion (13) of a surface of a vehicle window (10) within a wipe pattern and having edges (25) defining an extended insulating gap between the electrodes (21,22). The electrodes (21,22) form a gap (25) which varies in width over the range of diameters of drops to be sensed. The sensor shows more sensitivity to larger drops than to smaller drops as compared with a similar sensor having a constant gap width. The variation in gap width may be continuous or stepwise over the total sensing range. <IMAGE></p> |
