Systems, methods, and devices for sensing particulate matter
US10809172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2015 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Aug 4, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for sensing particulate matter receives a first plurality of electronic signals from a photodetector over a period of time, the first plurality of electronic signals associated with a first plurality of particles, wherein each of the first plurality of electronic signals has a respective amplitude, sorts the first plurality of electronic signals into a plurality of amplitude levels, determines a respective quantity of signals associated with each amplitude level, determine an average summation of the first plurality of electronic signals, performs a calibration using the average summation, receives a second plurality of electronic signals from the photodetector over a period of time subsequent to the calibration, the second plurality of electronic signals associated with a second plurality of particles, and determines a mass concentration of the second plurality of particles based on the second plurality of electronic signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.