STRESS MEASURING DETECTOR Russian patent published in 2008 - IPC G01L1/24 

FIELD: measuring technique.

SUBSTANCE: deformation measuring aid has at least one light guide for supplying light from wide band light source or at least from one narrow band light source to case and removal of light away from case to optical signal reception and processing unit. Case of detector is capable of resilient twisting. There is light polarization aid in case and/or outside case. At least one end of light guide is disposed in case. It forms at least one light radiator, supplied to case, and at least one light receiver for removal light away from case. There is polarizer in case, which polarizer is disposed in series behind radiator and receiver and is motionless connected with case. Plane of polarization of polarizer is oriented at angle to plane of light polarization. There is mirror behind polarizer. Optical signal receiving and processing unit provides procession of light reflected from mirror, and measurement of deformation of twist. Selective light reflector is disposed between end of light guide and polarizer. Selective light reflector is motionless connected with case to provide reflection of second part of wide band light spectrum or second part of light spectrum from second narrow band light source, differing from first part of wide band light spectrum or from first part of narrow band first light source reflected by mirror. Longitudinal-lateral deformation and/or vertical deformation (compression-extension deformations), twist deformations and/or curve deformations can be measured simultaneously.

EFFECT: widened functional abilities of deformation detector; simplified process of manufacture; improved reliability of detector.

44 cl, 4 dwg