Group calibration of environmental sensors
US10054534B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2016 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Aug 30, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/1026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and methods batch calibrate environmental sensors. Candidate environmental sensors and a high-performance reference sensor are located in an enclosure with a particle excitation system that controls the particle concentration in the enclosure. The calibration process includes multiple phases with different particle concentrations, and the candidate and reference sensors continuously report their particle counts to a calibration server during these phases. Based on the collected data, the calibration server: (i) identifies for removal candidate sensors with outlying behavior through statistical analysis; and (ii) computes calibration values for the particle count estimation algorithms for the remaining candidate sensors that are optimized to minimize the error relative to the reference sensor(s).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.