发明名称 |
METHOD FOR DETECTING A LEVEL OF CONTAMINATION OF A PARTICLE SENSOR, AND PARTICLE SENSOR |
摘要 |
In a method for detecting a level of contamination of a particle sensor provided with two electrodes situated on an insulator material for generating an electrical field, the insulator material is heated to above a limiting temperature of the insulator material at which the insulator material begins to become conductive. The insulator material is modulated by heating or cooling, the modulation being carried out at a lower temperature and an upper temperature which are each above the limiting temperature. The variation over time of a measuring signal which may be picked up between electrodes is measured during the modulation. The measured variation over time of the measuring signal is compensated using a theoretical variation over time of the measuring signal in a contamination-free state of the particle sensor in order to obtain a variation over time of a differential signal.
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申请公布号 |
US2010312488(A1) |
申请公布日期 |
2010.12.09 |
申请号 |
US20080733955 |
申请日期 |
2008.09.18 |
申请人 |
DIEHL LOTHAR;KUHN BETTINA;SCHITTENHELM HENRIK |
发明人 |
DIEHL LOTHAR;KUHN BETTINA;SCHITTENHELM HENRIK |
分类号 |
G06F19/00;G01N25/00 |
主分类号 |
G06F19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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