Device for evaluating the signal from a viscosity sensor
First Claim
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1. A device for evaluating a signal from a viscosity sensor sensing a medium, comprising:
- an amplifying circuit for the signal from the viscosity sensor, wherein the amplifying circuit includes a predetermined temperature dependence for an amplification of the signal from the viscosity sensor as a function of the temperature of the medium, and wherein the signal from the viscosity sensor is dependent on a temperature T and constants (k1 and k2), and wherein the constants k1 and k2 depend on a grade of the medium, according to the following formula;
VS ≈
k1+k2Twherein VS is the signal from the viscosity sensor.
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Abstract
A device is provided for evaluating the signal from a viscosity sensor having an amplifying circuit. The amplification of the amplifying circuit is controlled by a temperature signal from a temperature sensor.
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2 Claims
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1. A device for evaluating a signal from a viscosity sensor sensing a medium, comprising:
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an amplifying circuit for the signal from the viscosity sensor, wherein the amplifying circuit includes a predetermined temperature dependence for an amplification of the signal from the viscosity sensor as a function of the temperature of the medium, and wherein the signal from the viscosity sensor is dependent on a temperature T and constants (k1 and k2), and wherein the constants k1 and k2 depend on a grade of the medium, according to the following formula;
VS ≈
k1+k2Twherein VS is the signal from the viscosity sensor.
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2. A device for evaluating a signal from a viscosity sensor sensing a medium, comprising:
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an amplifying circuit for the signal from the viscosity sensor, wherein the amplifying circuit includes a predetermined temperature dependence for an amplification of the signal from the viscosity sensor as a function of the temperature of the medium, and wherein the amplification of the amplifying circuit is dependent on a temperature T and constants (cl and c2), and wherein the constants c1 and c2 depend on a grade of the medium, according to the following formula;
A≈
1/(c1+c2Twherein A is the amplification of the amplifying circuit.
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Specification
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Current AssigneeRobert Bosch GmbH
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Original AssigneeRobert Bosch GmbH
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InventorsArtzner, Johannes, Jakoby, Bernhard
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Primary Examiner(s)GARBER, CHARLES D
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Application NumberUS10/362,990Publication NumberTime in Patent Office1,557 DaysField of Search73/542.4, 73/544.1, 73/540.2, 73/530.5, 73/544.2, 735/79, 73/542.5US Class Current73/54.02CPC Class CodesG01N 11/00 Investigating flow properti...G01N 2011/0013 Temperature compensation
