US 12,228,089 B2Granted

Systems and methods for determining exhibited useful life of sensors in monitored systems

AssigneeCummins Emission Solutions Inc.

InventorsSwapnali Gujar, Kapil Rajkumar Dhanwani, Kwadwo O. Owusu, Premjee Sasidharan, Alan H. Zhao, Jinqian Gong, Jeffrey Diwakar Abraham, Thomas C. Smith, Jr.

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Abstract

A method executed by at least one server, comprising: receiving, from a first monitored system comprising an internal combustion engine and a first sensor, a first signal associated with a first occurrence and a second occurrence of an internal combustion engine event and first measurement data of the first sensor; determining a first measurement from the first measurement data and a second measurement from the first measurement data based on the first and second occurrences, respectively; determining a reference measurement; determining a first reference deviation; determining a second reference deviation; after determining the first reference deviation is less than a first reference threshold and the second reference deviation is less than a second reference threshold, determining a measurement deviation; comparing the measurement deviation to a measurement threshold; and after determining the measurement deviation satisfies the measurement threshold, determining a first exhibited useful life of the first sensor.

Claims20

Dependent claims

A method comprising:

receiving, by at least one server comprising at least one processor coupled to at least one memory, a first signal from a first monitored system that comprises an internal combustion engine and a first sensor, the first signal associated with a first occurrence of an internal combustion engine event of the first monitored system, a second occurrence of the internal combustion engine event of the first monitored system, and first measurement data of the first sensor;
determining, by the at least one server, a first measurement from the first measurement data based on the first occurrence of the internal combustion engine event;
determining, by the at least one server, a second measurement from the first measurement data based on the second occurrence of the internal combustion engine event;
determining, by the at least one server, a reference measurement from the first measurement data;
determining, by the at least one server, a first reference deviation between the first measurement and the reference measurement;
determining, by the at least one server, a second reference deviation between the second measurement and the reference measurement;
comparing, by the at least one server, the first reference deviation to a stored first reference threshold;
comparing, by the at least one server, the second reference deviation to a stored second reference threshold;
after determining that the first reference deviation is less than the stored first reference threshold and the second reference deviation is less than the stored second reference threshold, determining, by the at least one server, a measurement deviation between the first measurement and the second measurement;
comparing, by the at least one server, the measurement deviation to a stored measurement threshold;
and
after determining that the measurement deviation satisfies the stored measurement threshold, determining, by the at least one server, a first exhibited useful life of the first sensor based on the measurement deviation and at least one of the first measurement or the second measurement.

9 more elements

A method comprising:

receiving, by at least one server comprising at least one processor coupled to at least one memory, a first signal from a first monitored system that comprises an internal combustion engine and a first sensor, the first signal associated with a first occurrence of an internal combustion engine event of the first monitored system, operation data of the first monitored system, a second occurrence of the internal combustion engine event of the first monitored system, and first measurement data of the first sensor;
determining, by the at least one server, a first measurement from the first measurement data based on the first occurrence of the internal combustion engine event;
determining, by the at least one server, a second measurement from the first measurement data based on the second occurrence of the internal combustion engine event;
determining, by the at least one server, a measurement deviation between the first measurement and the second measurement;
determining, by the at least one server, a target operating characteristic associated with the first measurement;
determining, by the at least one server, an exhibited operating characteristic based on the operation data and the first measurement;
determining, by the at least one server, a target deviation between the target operating characteristic and the exhibited operating characteristic;
comparing, by the at least one server, the target deviation to a stored target threshold;
comparing, by the at least one server, the measurement deviation to a stored measurement threshold after determining that the target deviation is less than the stored target threshold;
and
after determining that the measurement deviation satisfies the stored measurement threshold, determining, by the at least one server, a first exhibited useful life of the first sensor based on the measurement deviation and at least one of the first measurement or the second measurement.

8 more elements

A method comprising:

receiving, by at least one server comprising at least one processor coupled to at least one memory, a first signal from a first monitored system that comprises an internal combustion engine and a first sensor, the first signal associated with a first occurrence of an internal combustion engine event of the first monitored system, a second occurrence of the internal combustion engine event of the first monitored system, a third occurrence of the internal combustion engine event of the first monitored system, and first measurement data of the first sensor;
determining, by the at least one server, a first measurement from the first measurement data based on the first occurrence of the internal combustion engine event;
determining, by the at least one server, a second measurement from the first measurement data based on the second occurrence of the internal combustion engine event;
determining, by the at least one server, a third measurement from the first measurement data based on the third occurrence of the internal combustion engine event;
determining, by the at least one server, a rate of change between the first measurement, the second measurement, and the third measurement;
comparing, by the at least one server, the rate of change to a stored rate threshold;
determining, by the at least one server, a threshold deviation between a first operation measurement associated with the first occurrence of the internal combustion engine event and a second operation measurement associated with the second occurrence of the internal combustion engine event after receiving the first signal;
determining, by the at least one server, a measurement deviation between the first measurement and the second measurement;
comparing, by the at least one server, the measurement deviation to the threshold deviation;
after determining that the measurement deviation satisfies the threshold deviation, determining, by the at least one server, a first exhibited useful life of the first sensor based on the measurement deviation and at least one of the first measurement or the second measurement;
and
after determining that the rate of change satisfies the stored rate threshold, determining, by the at least one server, a second exhibited useful life of the first sensor based on the rate of change and at least one of the first measurement, the second measurement, or the third measurement.

9 more elements

A method comprising:

receiving, by at least one server comprising at least one processor coupled to at least one memory, a first signal from a first monitored system that comprises an internal combustion engine and a first sensor, the first signal associated with a first occurrence of an internal combustion engine event of the first monitored system, a second occurrence of the internal combustion engine event of the first monitored system, and first measurement data of the first sensor;
determining, by the at least one server, a first measurement from the first measurement data based on the first occurrence of the internal combustion engine event;
determining, by the at least one server, a second measurement from the first measurement data based on the second occurrence of the internal combustion engine event;
determining, by the at least one server, a measurement deviation between the first measurement and the second measurement;
comparing, by the at least one server, the measurement deviation to a stored measurement threshold;
after determining that the measurement deviation satisfies the stored measurement threshold, determining, by the at least one server, a first exhibited useful life of the first sensor based on the measurement deviation and at least one of the first measurement or the second measurement;
comparing, by the at least one server, the first exhibited useful life to a stored exhibited useful life threshold;
comparing, by the at least one server, based on the first exhibited useful life satisfying the stored exhibited useful life threshold, the first measurement data to second measurement data associated with a second monitored system;
and
determining, by the at least one server, a failure mode of the first sensor based on the first exhibited useful life, the first measurement data, and the second measurement data, the failure mode comprising at least one of a degradation of a heater of the first monitored system, a platinum peel-off event of the first sensor, or a poisoning of the first sensor.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/602,931Filed 12 Mar 2024 · continuation
Priority: 19 Jul 2022
Published: US 2024/0026836 A14 Jul 2024
Granted: 18 Feb 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

F02D 41/222
Safety or indicating devices for abnormal conditions: relating to the failure of sensors or parameter detection devices
F02D 41/1401
Introducing closed-loop corrections: characterised by the control or regulation method
F02D 41/1454
Characterised by the characteristics of the combustion gases: the characteristics being an oxygen content or concentration or the air-fuel ratio
F02D 41/1461
The characteristics being an NOx content or concentration: of the exhaust gases emitted by the engine

Family

Application17/868,205Parent of this continuation · filed 19 Jul 2022
US 2024/0218841 A1Pre-grant publication · published 4 Jul 2024
US 11,959,433 B2Parent of this continuation
US 2024/0026836 A1Published application
US 12,228,089 B2This patent

From the US filing history. Foreign family members aren’t listed.