公开(公告)号：US09207110B2

公开(公告)日：2015-12-08

申请号：US13857299

申请日：2013-04-05

申请人： YAZAKI CORPORATION

发明人： Yasunori Kawaguchi ,  Shinpei Kato ,  Toshiaki Fukuhara

IPC分类号： G01F23/22 ,  G01F25/00 ,  G01F23/26

CPC分类号： G01F23/22 ,  G01F23/263 ,  G01F23/265 ,  G01F23/266 ,  G01F23/268 ,  G01F25/0061

摘要： A liquid level detecting device includes a first detecting part that has a first electrode extending in a vertical direction in the tank and opposing to a ground electrode and detects a first electrostatic capacity between the first electrode and the ground electrode, a second detecting part that has a second electrode extending in the vertical direction in the tank and opposing to the ground electrode and detects a second electrostatic capacity between the second electrode and the ground electrode, and a difference calculating part that calculates a difference between the first electrostatic capacity detected by the first detecting part and the second electrostatic capacity detected by the second detecting part as a capacity difference and determines whether the liquid level in the tank is above a warning threshold.

摘要翻译： 液面检测装置包括第一检测部，该第一检测部具有在槽内沿垂直方向延伸并与接地电极相对的第一电极，检测第一电极与接地电极之间的第一静电电容;第二检测部， 第二电极，其在所述槽中沿垂直方向延伸并且与所述接地电极相对并且检测所述第二电极和所述接地电极之间的第二静电电容;以及差分计算部，其计算由所述第一电极和所述接地电极检测到的所述第一静电电容之间的差 检测部分和由第二检测部分检测的第二静电电容作为容量差，并且确定罐中的液位是否高于警告阈值。