Pressure change measurement device, altitude measurement device, and pressure change measurement method
US10451510B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2015 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Jun 11, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/0092
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pressure change measuring apparatus and a pressure change measuring method are capable of detecting a change in pressure to be measured with respect to a time axis with high accuracy. The pressure change measuring apparatus includes a reference value setting unit that generates a reference value signal based on an output signal of a differential pressure measuring cantilever under a predetermined state and outputs the reference value signal. An arithmetic processing unit calculates the pressure change in the pressure to be measured based on the output signal, the reference value signal, a volume of a cavity, and a flowing quantity of a pressure transmission medium flowing into and out of the cavity for every unit of a predetermined time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.