US 12,392,675 B2
Sensor device for measuring a fluid pressure, and method for manufacturing a sensor device
Carlo Rabaiotti, Zollikerberg (CH); Alessio Höttges, Zürich (CH); Massimo Facchini, Zürich (CH); Daniel Schwendemann, Pfullendorf (DE); and Silvan Walker, Altendorf (CH)
Assigned to PROF. DR. CARLO RABAIOTTI OST—OSTSCHWEIZER FACHHOCHSCHULE, Rapperswil (CH)
Appl. No. 18/850,184
Filed by PROF. DR. CARLO RABAIOTTI OST—OSTSCHWEIZER FACHHOCHSCHULE, Rapperswil (CH)
PCT Filed Mar. 24, 2023, PCT No. PCT/EP2023/057677
§ 371(c)(1), (2) Date Sep. 24, 2024,
PCT Pub. No. WO2023/180544, PCT Pub. Date Sep. 28, 2023.
Claims priority of application No. 10 2022 107 179.0 (DE), filed on Mar. 25, 2022.
Prior Publication US 2025/0109999 A1, Apr. 3, 2025
Int. Cl. G01L 11/02 (2006.01); G01L 9/00 (2006.01)
CPC G01L 9/0007 (2013.01) [G01L 9/0032 (2013.01); G01L 11/025 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A sensor device at least for measuring a fluid pressure, having a base body and having a fibre-optic sensor unit which comprises at least one sensor element which is in the form of a light-conducting fibre and which extends along a longitudinal extension of the base body at least in sections at least substantially helically around the base body, the sensor device further having a transmission unit which is arranged in at least one measuring range around the base body and the at least one sensor element and is configured to receive a fluid from an environment and to transmit a fluid pressure to the fibre-optic sensor unit for deformation of the at least one sensor element,
wherein the at least one measuring range is designed as a region of the at least one sensor element in which the fluid pressure is detected,
wherein the transmission unit comprises at least one receiving element which is formed from a porous material and a support unit, wherein the support unit is configured to shield the at least one receiving element at least in regions against deformation caused by a mechanical action of force from an outside of the transmission unit,
wherein the support unit is configured to conduct the fluid from the outside through the support unit to the at least one receiving element,
wherein the support unit is provided with recesses which are permeable only to fluids,
wherein the at least one receiving element is permeable for the fluid.