Fine dust mass measurement device and operating method thereof
US12422405B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 1, 2023 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | May 27, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02408
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dust mass measurement device includes a sensing channel configured to generate a sensing clock signal, a reference channel configured to generate a reference clock signal, a counter configured to generate a first output signal based on the sensing clock signal, and generate a second output signal based on the reference clock signal, and a controller configured to calculate a frequency difference between the sensing clock signal and the reference clock signal based on a difference value between the first output signal and the second output signal, which are received from the counter, and measure a mass of dust based on the calculated frequency difference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.