For industrial application in a difficult environment, an optical in-situ monitoring of fast pressure changes should be developed. This is based on a Bragg grating in an optical fiber. The laser wavelength was controlled to the grating. A change in the grating constant caused a variation in the light reflection.

Within a CTI project with EMPA in Thun, I designed this method. In addition, we developed an evaluation algorithm based on machine learning (AI).

A test with the prototype proved the suitability of this method.

Targets and key figures

Project accepted by Innosuisse

Machine learning (AI) used

New technical approach (fiber optics and acoustics)

Requirements of the specifications exceeded

Costs below budget

One patent pending

February 2014 – February 2017

Budget 1’300’000 CHF

Five employees in the team

Mechanical and electrical industry

Patent application

WO2017214738A

Testimonial

“He (Reinhard Müller-Siebert) was very professional and competent. The project ran on time, on budget and was considered by all parties as a success.”

Kilian Wasmer Head of Processing Dynamics Group – EMPA