| 摘要 |
A pressure transducer assembly that uses static pressure compensation to capture low-level dynamic pressures in high temperature environments. In one embodiment, a method comprises receiving, at a first tube, a pressure, wherein the pressure includes a static pressure component and a dynamic pressure component; receiving, at a micro-filter, the pressure; filtering, by the micro-filter, at least a portion of the dynamic pressure component of the pressure; outputting, from the micro-filter, a filtered pressure; receiving, at a first surface of a first sensing element, the pressure; receiving, at a second surface of the first sensing element, the filtered pressure; measuring, by the first sensing element, a difference between the pressure and the filtered pressure, wherein the difference is associated with the dynamic pressure component of the pressure; and outputting, from the first sensing element, a first pressure signal associated with the dynamic pressure component of the pressure. |
| 主权项 |
1. A method for improving accuracy of low-level dynamic pressure measurements, comprising:
determining spectral characteristics of a pressure filtering apparatus, the pressure filtering apparatus comprising:
a first tube having a front end and a back end, the first tube configured to:
receive, at the front end of the first tube, a pressure, wherein the pressure includes a static pressure component and a dynamic pressure component; anda micro-filter disposed proximate the back end of the first tube, wherein the micro-filter is configured to:
receive the pressure via the first tube;filter a portion of the dynamic pressure component of the pressure; andoutput a filtered pressure; receiving, from a pressure sensor system comprising at least the pressure filtering apparatus, a first pressure signal comprising a difference between the pressure and the filtered pressure; producing a compensated output signal by computationally deconvolving the first pressure signal with the determined spectral characteristics of the pressure filtering apparatus; and outputting the compensated output signal. |
