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1. (WO2018219606) ELECTROSTATIC PARTICLE SENSOR UNIT HAVING MAIN AND AUXILIARY ELECTRODES

Pub. No.:    WO/2018/219606    International Application No.:    PCT/EP2018/061911
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Wed May 09 01:59:59 CEST 2018
IPC: G01N 15/06
G01N 15/00
Applicants: ROBERT BOSCH GMBH
Inventors: RUSANOV, Radoslav
BODE, Niels
GENTER, Simon
HEEREN, Imke
TIEFENBACH, Andy
SCHITTENHELM, Henrik
ROHLFING, Franziska
KREBS, Daniel
Title: ELECTROSTATIC PARTICLE SENSOR UNIT HAVING MAIN AND AUXILIARY ELECTRODES
Abstract:
The invention relates to a particle sensor unit (10) having a sensor unit (28) and a control unit (30), wherein the sensor unit (28) has at least one first main electrode (34), which can be connected to a main high-voltage source (44) via a first current path (60) and has a first polarity in the connected state, and wherein the sensor unit (28) has a main electrode (36) with a second polarity that is the opposite of the first polarity. The particle sensor unit (10) is characteried in that the sensor unit (28) has at least one first auxiliary electrode (38), which can be connected to a main voltage source (46) via a second current path (62) and has the first polarity in the connected state, and in that the sensor unit (28) has at least one first auxiliary electrode (40) with the second polarity.