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Calibración de sensores de flujo mediante láser Doppler

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TODE20170711001
Publicado:
26/10/2018
Caducidad:
27/10/2019
Resumen:
Un instituto de investigación alemán especializado en metrología ha desarrollado una solución mejorada para calibrar sensores de flujo. La Anemometría de Láser Doppler (LDA) es un procedimiento óptico, y por lo tanto sin contacto, para medir la velocidad en líquidos y calibrar sensores de flujo. El procedimiento desarrollado reduce considerablemente la inseguridad de la determinación del flujo de volumen incluso cuando fallan las soluciones del estado del arte. Con esta solución es posible calibrar sensores de flujo a altas temperaturas y presiones. El instituto de investigación, que ha solicitado la patente en Alemania, busca licenciatarios.

Details

Tittle:
Flow sensors calibration by means of Laser-Doppler
Summary:
A German research institute, specialized on metrology, has developed an improved solution for the calibration of flow sensors. Laser-Doppler Anemometry (LDA) is an optic, therefore contactless procedure for velocity measurements in liquids. LDA enables the calibration of flow sensors. The developed procedure reduces the insecurity of the determination of the volume flow considerably and even under conditions where state-of-art solutions fail. The research institute is searching for licensees.
Description:
A German research institute, specialized on metrology, has developed an improved solution for the calibration of flow sensors by means of Laser-Doppler Anemometry (LDA). During LDA two laser beams are overlapped. In the intersection a measuring range emerges where a visible fringe pattern is designed. Within this measuring range the flow velocity is recorded. For the application of LDA it is necessary to determine the interference fringe gap, the size and the position of the measuring volume. Until now the interference fringe gap could only be determined in a laboratory. A measuring method for the determination of the position didn´t exist yet.
Thanks to the new procedure these parameters can be recorded right at the measuring location.
With help of a positioning system the laser beams are proceeded over a target - e.g. a marking on the optical access - and the light that is reveberated by the target, is detected. The beam trajectory of the interfering laser beams is reconstructed from the output of the back-scattered light and determines the interference fringe gap, the position, and the size of the measuring volume.
The detection of the LDA-measuring volume is more precise than ever before and the calibration of the flow sensors can be realized despite high temperatures and high pressure.
The research institute is searching for licensees intererested in products for the calibrations of flow sensor and to market them on the respective market.
Advantages and Innovations:
The offered solution:
- offers a measuring method for the determination of the position of the measuring volume.
- reduces uncertainties of LDA measurements.
- enabled calibrations of flow sensors at high temperature and high pressure.
Stage of Development:
Field tested/evaluated
IPs:
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
The institute has applied for a Patent in Germany, the research institute plans extend that upon demand.

Partner sought

Type and Role of Partner Sought:
- Type of partner sought: industry
- Specific area of activity of the partner: manufacturers or service providers in the area of LDA,
power plant operators
- Task to be performed by the partner sought: use the offered solution as licensee

Client

Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
German

Keywords

Technology Keywords:
09003 Sistemas electrónicos de medida
09001004 Tecnología eléctrica relacionada con la realización de medidas
09001007 Tecnología óptica relacionada con la realización de medidas