Altum Technologies Oy

Photono Oy

Helsingin Yliopisto

Timo Rauhala

Ari Salmi

Edward Haeggström

Petro Moilanen

Heikki Juhani Nieminen

Antti Kontiola

Petri Jukka Myllymäki

Jouko Yliruusi

Edward Hæggström

Ivan Kassamakov

Kai Falck

Kasper Peterzéns

Kalle Hanhijärvi

Arto Klami

Tor Paulin

Jyrki Heinämäki

Ivo Laidmäe

Petri MYLLYMÄKI

Methods and systems for cleaning devices holding fluid which use a system such as a transducer assembly including at least one pair of protrusions acting as point-like pressure sources or at least one substantially circular protrusion acting as a substantially circular point-like pressure source, coupled to an outer surface of the device to be cleaned.

Method and system for cleaning a device holding fluid

Disclosed is systems and methods for cleaning devices holding fluid such as heat exchanges. The cleaning is performed by using a system such as a transducer assembly including a mechanical wave generator and a waveguide including a cavity. The system is capable of operating at its fundamental resonance frequency even when connected to an outer surface of the device to be cleaned.

System and a method for cleaning a device

Disclosed are methods for cleaning of devices, such as heat exchangers, in particular to methods wherein machine learning systems, such as trained neural networks are used for indicating the fouling status the during the cleaning processes.

Method for cleaning of a device

The present invention relates to systems and methods for cleaning of devices, such as heat exchangers. According to the invention, controlled cavitation is created at predetermined positions within a device. The cavitation is done by mechanical waves, such as ultrasound waves, generated by transducers, wherein the waves are based on output of time-reversal wave form analysis of the device structures.

System and a method for cleaning of a device

An intraocular pressure measurement arrangement is disclosed for measuring pressure of an eye of a patient. The arrangement can detect at least one of acoustic reflectivity, optical reflectivity, optical path difference, positioning of intraocular pressure measurement arrangement with respect to the eye, orientation of intraocular pressure measurement arrangement with respect to the eye, shape of cornea and corneal thickness. At least one source can produce acoustic, nonlinear acoustic, mechanical or a nonlinear mechanical wave from a distance, coupling to the eye to generate at least one surface wave. Upon triggering data acquisition, at least one surface wave from a distance from the eye can be detected to extract surface wave information with pressure information of the eye being based on the surface wave information.

Method and arrangement for eye measurements

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Helsinki, Finland

Timo Rauhala