Operation of combustible gas sensor in a dynamic mode with a constant resistance setpoint
US12061161B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2023 |
| Grant date | Aug 13, 2024 |
| Priority date | — |
| Expiry date | Jun 2, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas sensor device includes a sensing element including a heating element and electronic circuitry in connection with the heating element. The sensing element forms a resistive element in a circuit of the electronic circuitry. The electronic circuity operates the sensing element in a trigger mode via a pulsed energy input to the heating element at a first duty cycle and in a primary mode via a pulsed energy input to the heating element at a second duty cycle, which is greater than the first duty cycle. The electronic circuitry is further configured to measure a response of the sensing element over time during each pulse of a plurality of pulses of the pulsed energy input. The primary mode is entered upon measurement of a value of a response at or above a threshold value in the trigger mode of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.