Sensor chip having potential surfaces for avoiding contaminant
AssigneeRobert Bosch GmbH
InventorsUwe Konzelmann, Torsten Schulz
Life of this patent
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Abstract
A sensor chip having at least upstream from the sensor region, at least one potential surface that, by electrical interaction with the contaminants in the flowing medium, prevents precipitation in the sensor region.
Claims22
A sensor chip for measuring at least one parameter of a flowing medium having a main flow direction, comprising:
- a sensor region for performing at least one measurement operation;
- and
- at least one potential surface positioned at least partially upstream in front of the sensor region on the sensor chip,
- wherein the at least one potential surface is connected to a low-voltage source;
- and wherein the at least one potential surface is arranged to generate, by way of an applied electric voltage, an electric field to deflect or attract entrained particles of the flowing medium around the sensor region.
A method of using at least one potential surface to deflect entrained particles of a flowing medium in a vicinity of a sensor region in accordance with an electric field, comprising:
- positioning the at least one potential surface on a sensor chip for determining at least one parameter of the flowing medium;
- and causing the at least one potential surface to generate, by way of an applied electrical voltage, the electric field that deflects the entrained particles of the flowing medium around the sensor region.
A method for avoiding contamination on a sensor chip that has a sensor region and is positioned in a flowing medium, comprising:
- causing at least one potential surface to generate, by way of an applied electrical voltage, an electric field that deflects entrained particles of the flowing medium around the sensor region.
A method for avoiding contamination on a sensor chip that has a sensor region and is arranged in a flowing medium, comprising:
- causing at least one potential surface to generate, by way of an applied electrical voltage, an electric field that attracts entrained particles of the flowing medium one of upstream and downstream from the sensor region in a region of the at least one potential surface.
Dependencies are inferred from the claim text.