发明申请
- 专利标题： SOOT DETECTING APPARATUS AND SOOT DETECTING METHOD
- 专利标题（中）： 检测装置和检测方法
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申请号： US12022366申请日： 2008-01-30
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公开(公告)号： US20080178657A1公开(公告)日： 2008-07-31
- 发明人: Daisuke Komatsu , Norihiko Nadanami , Masato Katsute , Hitoshi Yokoi , Tomonori Kondo , Wataru Matsutani , Kouichi Imaeda
- 申请人： Daisuke Komatsu , Norihiko Nadanami , Masato Katsute , Hitoshi Yokoi , Tomonori Kondo , Wataru Matsutani , Kouichi Imaeda
- 优先权： JPP2007-020477 20070131; JPP.2007-324035 20071214
- 主分类号： G01R19/155
- IPC分类号： G01R19/155
摘要：
A soot detecting apparatus includes: a high voltage generating unit for generating a high voltage; a discharge sensor which includes a pair of electrodes to be, disposed in an atmosphere to be detected, for causing a spark discharge at a discharge voltage dependent upon soot concentration in the atmosphere when the high voltage is applied across the pair of electrodes; a first detection unit for detecting a first discharge voltage value when the spark discharge occurs in the discharge sensor upon application of the high voltage of a predetermined voltage polarity; a first output unit for determining a first soot concentration value based on the first discharge voltage value; and a changeover unit for converting the predetermined voltage polarity to an opposite voltage polarity for causing reverse spark discharge at the pair of electrodes of the discharge sensor.
信息查询
