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CN110582695A 用于运行颗粒传感器的设备和方法 有权

用于运行颗粒传感器的设备和方法
摘要：
一种用于运行颗粒传感器的设备(100)，所述颗粒传感器包括至少一个高电压电极(102)和至少一个接地电极(104)，其中，所述设备(100)具有处理器(106)、测量装置(108)和电压供给单元(110)，其中，在所述至少一个高电压电极(102)与所述至少一个接地电极(104)之间能够产生电场(E)，所述测量装置(108)构造用于测量电荷平衡电流(I)，所述电荷平衡电流在废气流至少部分地在所述至少一个高电压电极(102)与所述至少一个接地电极(104)之间的电场(E)的区域中流动期间流至所述至少一个高电压电极(102)和/或所述至少一个接地电极(104)；所述处理器(106)构造用于控制所述电压供给单元(110)，以便在所述电荷平衡电流(I)的测量期间至少在一个时间段中通过所述至少一个高电压电极(102)与所述至少一个接地电极(104)之间的交流电压(U)来产生所述电场(E)。
摘要（英）：

The invention relates to a device (100) for operating a particle sensor which comprises at least one high-voltage electrode (102) and at least one ground electrode (104). The device (100) has a processor (106), a measuring device (108), and a voltage supply unit (110), and an electric field (E) can be generated between the at least one high-voltage electrode (102) and the at least one ground electrode (104). The measuring device (108) is designed to measure a charge compensation current (I) which flows to the at least one high-voltage electrode (102) and/or the at least one ground electrode (104) while an exhaust gas flow flows at least partly in a region of the electric field (E) between the at least one high-voltage electrode (102) and the at least one ground electrode (104). The processor (106) is designed to actuate the voltage supply unit (110) in order to generate the electric field (E) by means of an alternating voltage (U) between the at least one high-voltage electrode (102) and the at least one ground electrode (104) at least in a period of time during the measurement of the charge compensation current (I). The invention also relates to a method for operating the particle sensor.

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