A system for measuring velocity of particles such as particles in air is a Light Detection and Ranging (LIDAR) system, having a micro-electro-mechanical-system (MEMS).
G01S 17/95 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour la météorologie
G01S 17/58 - Systèmes de détermination de la vitesse ou de la trajectoireSystèmes de détermination du sens d'un mouvement
G01S 7/481 - Caractéristiques de structure, p. ex. agencements d'éléments optiques
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
The present disclosure relates to an eye-safe LIDAR system, more specifically a LIDAR system with a micro-electro-mechanical system used for spatially dithering laser beam.
G01S 17/95 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour la météorologie
G01S 17/88 - Systèmes lidar, spécialement adaptés pour des applications spécifiques
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
The present invention relates to a system for measuring velocity of particles such as particles in air. The present invention relates in particular to a Light Detection and Ranging (LIDAR) system, having a micro-electro-mechanical-system (MEMS).
This invention relates to a method of aligning a LIDAR system with a rotation axis of a rotor of a wind turbine using a LIDAR alignment tool comprising at least a wind turbine alignment interface configured for aligning the LIDAR alignment tool with a rotation axis of a wind turbine, at least a LIDAR alignment interface configured for aligning the LIDAR alignment tool with a LIDAR system so that a laser beam pointing direction of a LIDAR system can be aligned with the LIDAR alignment tool, and the LIDAR alignment tool comprises a gyroscope configured for obtaining a substantially fixed spin axis, which LIDAR alignment tool is configured to record a spin axis direction of the fixed spin axis constituting the one to-one reference between the spin axis direction and each of the wind turbine alignment interface and the LIDAR alignment interface.
F03D 11/00 - Détails, parties constitutives ou accessoires non couverts par les autres groupes de la présente sous-classe ou présentant un intérêt autre que celui visé par ces groupes
The present invention relates to a low-cost LIDAR system. The system may be integrated in a wind turbine for measurement of the approaching wind field. One embodiment relates to a LIDAR system comprising a beam generating section adapted for generating a substantially linearly polarized output beam, and a beam steering section comprising a first optical device for controllably altering the polarization of the output beam, said first optical device in optical connection with a first polarizing beam splitter, said beam steering section adapted for directing the outputbeam interchangeably between a first direction and a second direction.
G01C 3/08 - Utilisation de détecteurs électriques de radiations
G01S 17/95 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour la météorologie
G01S 7/481 - Caractéristiques de structure, p. ex. agencements d'éléments optiques
G01S 7/499 - Détails des systèmes correspondant aux groupes , , de systèmes selon le groupe utilisant des effets de polarisation
G01S 17/58 - Systèmes de détermination de la vitesse ou de la trajectoireSystèmes de détermination du sens d'un mouvement
G02F 1/09 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p. ex. produisant un effet Faraday
The present invention relates to a low-cost LIDAR system. The system may be integrated in a wind turbine for measurement of the approaching wind field. One embodiment relates to a LIDAR system comprising a beam generating section adapted for generating a substantially linearly polarized output beam, and a beam steering section comprising a first optical device for controllably altering the polarization of the output beam, said first optical device in optical connection with a first polarizing beam splitter,said beam steering section adapted for directing the outputbeam interchangeably between a first direction and a second direction.
09 - Appareils et instruments scientifiques et électriques
Produits et services
(1) Sensors, namely, wind sensors for determining position, velocity, acceleration and temperature; optical sensors in the field of wind turbines, wind generators, and wind mills; anemometers; wind acceleration sensors in the field of wind turbines, wind generators, and wind mills; an optical metrology inspection system comprised of a light source, one or more cameras and sensors used in communication with computer software and hardware to determine wind position, velocity, acceleration and temperature in the field of wind turbines, wind generators, and wind mills.
8.
Coherent LIDAR system based on a semiconductor laser and amplifier
The present invention relates to a compact, reliable and low-cost coherent LIDAR (Light Detection And Ranging) system for remote wind-speed determination, determination of particle concentration, and/or temperature based on an all semiconductor light source and related methods. The present invention provides a coherent LIDAR system comprising a semiconductor laser for emission of a measurement beam of electromagnetic radiation directed towards a measurement volume for illumination of particles in the measurement volume, a reference beam generator for generation of a reference beam, a detector for generation of a detector signal by mixing of the reference beam with light emitted from the particles in the measurement volume illuminated by the measurement beam, and a signal processor for generating a velocity signal corresponding to the velocity of the particles based on the detector signal.
