公开(公告)号：EP0656982A1

公开(公告)日：1995-06-14

申请号：EP93914644.0

申请日：1993-07-02

申请人： V. KANN RASMUSSEN INDUSTRI A/S

发明人： BRADE, Claus, Börge ,  BARTHOLIN, Niels

IPC分类号： B60S1 ,  E05F15 ,  G01N27 ,  G01W1

CPC分类号： G01W1/14 ,  E05F15/71 ,  E05Y2900/154 ,  G01N27/048 ,  Y10T29/49007 ,  Y10T29/4916

摘要： An electrical rain sensor to be mounted on the outside of the main frame of an openable window, particularly a skylight, comprising a sensing element with two electrodes mounted opposite one another in an insulating holder, the distance between the electrodes being less than the size of a raindrop. To the electrodes an electric circuit is connected which by detection of a change in an electrical quantity caused by the presence of raindrops, activates a maneuvering device which closes the window. The holder (8) is produced by moulding of an electrically insulating thermoplastic, wherein the supply lines to the electrodes (15, 16) as well as a heating element for the drying of the sensor is produced as inserts in the holder by moulding of an electrically conductive thermoplastic polymer into excavated recesses and/or grooves in the holder (8). The electrodes can be designed as coatings of a weather resistant conducting material, particularly material containing graphite, the conducting material being applied to most of the surface of the sensor.