Objetivo The underwater metrology system studied by CYBERNETIX will be able to carry out automatically accurate distance measurements to the depth of 300 metres.The major innovative aspect of the system consists in using an optical device to take measurements.The main applications of this development will be :- pipeline/riser connection.- subsea inspection and intervention on platform structures.Expected performancesMEASUREMENT DISTANCE : 6 to 30 meters (more if turbidity permits) MEASUREMENT DEPTH : 300 metres maximumFIELD OF CAMERA : automatic positioning- automatic option,. at 30 m : 630 x 473 mm. at 5 m : 135 x 100 mm. semi-automatic option,. at 30 m : 125 x 109 mm. at 5 m : 35 x 25 mmMEASUREMENT PRECISIONA change in water rate (n=1,336 +/- 0,005) can effect the measurement precision from 0 to 25 mm.This precision depends on geometrical configuration of points to be measured.DIMENSIONSLength x width x height2100 mm x 400 mm x 1000 mmWeight ? 500 kgThe metrology system is based on the principle of optical triangulation.It includes :* A pinpoint light placed on the point to be measured.* A two metre wide base divided into two identical parts.Each part is equiped with a CCD camera and a miror.* One of the miror is fix and gives the direction of sight.The other one is mobile to enable the two beams to cross at the considered point.* The base itself is mobile on its vertical axis to enable pan and tilt of the system.The pinpoint light is shown on a CCD camera and then analyzed with an image processing card, to calculate the pinpoint data.The system includes an automatic tracking of the pinpoint light in order to automatize the measures as much a possible. Programa(s) ENG-HYDROCARB 2C - Programme (EEC) of support for technological development in the hydrocarbons sector, 1986-1989 Tema(s) 1.6 - MISCELLANEOUS Convocatoria de propuestas Data not available Régimen de financiación DEM - Demonstration contracts Coordinador CYBERNETIX Aportación de la UE Sin datos Dirección 36 BOULEVARD DE L'OCEAN 13009 MARSEILLE Francia Ver en el mapa Coste total Sin datos
