Robert Boschgmbh

Sabine Roesch

Lothar Diehl

Jens Schneider

Henrik Schittenhelm

Ralf Schmidt

Helmut Marx

Thorsten Ochs

Markus Siebert

Detlef Heimann

Bernhard Kamp

Uwe Glanz

Harald Guenschel

Benjamin Hagemann

Lutz Dorfmueller

Stefan Rodewald

Henrico Runge

Georg Rixecker

Gerd Teike

Juergen Ruth

Benjamin Gaertner

Ulrich Hasenkox

Corinna Vonau

Frank Schnell

Juergen Sindel

Alexander Hetznecker

Johannes Grabis

Andreas Schaak

Peter Bartscherer

A sensor for detecting particles, in particular soot particles. The sensor comprises at least two measuring electrodes which are situated on a first layer made of an electrically insulating or conductive material, and at least two supply lines for the measuring electrodes. The supply lines are connected to the measuring electrodes respectively in a connection region. The supply lines are covered by at least one second layer made of an electrically insulating material such that the connection region is not covered by the second layer made of an electrically insulating material.

Sensor for detecting particles

Self-diagnosis of a particle sensor may be used for determining a particle content in a gaseous stream. The particle sensor may include at least two interlocking, interdigital electrodes and a heating element. The heating element may be separated from the electrodes by an insulation layer. The particle sensor may be heated in a regeneration phase and a soot load on the particle sensor can thereby be removed. A semiconductive layer may be formed in the insulation layer directly beneath the electrodes by means of external doping or auto-doping. To perform a self-diagnosis, a measurement voltage may be applied at least periodically between the electrodes and a self-diagnostic current may be measured.

Method and device for the self-diagnosis of a particle sensor

A sensor element is provided for gas sensors, in particular to determine particles in gas mixtures, the sensor element including at least one electrochemical measuring element exposed to the gas mixture to be determined, and at least one temperature-measuring element integrated into the sensor element. The temperature-measuring element includes a resistor track, which has an electric resistance of less than 180 Ohm at 0&#xb0; C. The resistor track may thus be produced by thin-foil technology, such as screen printing, for example.

Sensor element for gas sensors and method for operating same

A method is described for controlling the soot deposition on sensors. A sensor element is provided, which includes a first electrode and a second electrode. Different measuring voltages Uand Ucan be applied to the sensor element. During a first time period t, the sensor element is operated at a higher voltage Uuntil a triggering threshold AP of the sensor element is exceeded, while it is operated at a voltage U, which is different from higher voltage U, Ubeing lower than voltage U, during a second time period t.

Method for influencing soot deposits on sensors

A sensor element for gas sensors for determining the concentration of particulates in gas mixtures, in particular soot sensors having at least one first measuring electrode applied to an electrically insulating substrate and at least one second measuring electrode, a voltage being applicable to the first and second measuring electrodes. The first measuring electrode is at least partly covered by a porous material open to diffusion of the particles to be determined.

Sensor element for particle sensors and method for operating the sensor element

A sensor for determining the concentration of particles in gases, in particular of soot particles, has at least one substrate element, and a measuring area between at least one first and one second measuring electrode, the two measuring electrodes being configured so that by applying a voltage between the measuring electrodes, an asymmetric electric field is formed on the measuring area. The sides of the first and second measuring electrodes, facing one another, may not be parallel to one another, for example. Furthermore, at least one measuring electrode may have a structure along the side facing the other measuring electrode or along the finger electrodes.

Resistive particle sensors having measuring electrodes

A sensor element for gas sensors for determining the concentration of particles in gas mixtures, especially soot sensors, having at least one measuring device exposed to the gas to be determined, at least one heating element integrated into the sensor element and at least one temperature measurement element integrated into the sensor element, the heating element being situated within the sensor element spatially between the measuring device and the temperature measurement element.

Sensor element for particle sensors and method for operating same

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Ditzingen, Germany

Sabine Roesch