Air flow meter
US10816380B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2018 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Mar 29, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An air flow meter capable of rapidly following a change of a pulsation state of an input signal includes: an air flow rate detection element that generates an input signal Qsen relating to an air flow rate to be measured; and a calculation unit that performs calculation to generate an output signal Qout in response to the input signal Qsen. The calculation unit includes: the output signal calculation unit that performs calculation including exponentiation of raising the power of the output signal Qout by more than one; the input signal calculation unit that performs calculation on the input signal Qsen; the subtractor that obtains the difference between the calculation results by the output signal calculation unit and the input signal calculation unit; and the integrator that integrates the difference obtained by the subtractor, and the output signal Qout is generated based on the output from the integrator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.