简介：AlowfinenesseFabry-Perotinterferometricdisplacementsensorhasbeendevelopedandtested.WithusingahighstabilityHe-Nelaserandperfectsignalprocessingcircuits,noiselevelof0.01nmequivalenttoreflectordisplacementwasob-tainedinabandwidthof0-1kHz.

简介：Thestructureofanintensitymodulationopticalfibersensorisintroduced.Theprincipleofthesensorwhichcandetectminordisplacementbyuseofminorcurveindarkgroundisdescribed.Complexexperimentshowsthatthemultimodeopticalfibernotonlyhastheabilitlyofdetectingthedisplacementoflessthan0.1nm,butalsoexhibitscharacteristicsofwidedynamicrangeandgoodlinearity.

简介：双光的排水量传感器被介绍与单身者相比获得更高的精确性。系统的结构和原则也被介绍，并且硬件和软件也被引进。系统的函数通过实验是可行的并且基于FPGA模仿数据进程。CLC数字TH822

简介：Byaccuratelymeasuringthedisplacementbetweentherollersurfaceandtheopticalfiberproberelativetoanullposition,wecantesttherollerwear.Thewholetestingmethodandsystemwereintroduced.Eachpartofthetestingsystemwasillustrated.Andalsoanovelfiber-opticsensorwiththreeprobesinequaltransversespaceisadopted.Usingthissensor,theeffectsoffluctuationsinthelightsource,reflectivitychangingoftargetsurfaceandtheintensitylossesinthefiberlinesareautomaticallycompensated.Thismethodofferssuchadvantagesasnon-contact,noelectromagneticinterference,simplicity,lowcost,highsensitivity,goodaccuracyandstability.

简介：Adisplacementsurveymethodthatcanbeusedinfieldssuchastunnelengineering,hugedamengineeringandsoonisintroduced.Accordingtothismethod,aseriesofmeasuringstationsaresetalongafoldline,andanumberofbi-directionlaserbeamsand2-Ddisplacementsensorsareusedtorealizethelineandangledisplacementmeasurementstoobtainthedistortioninformationofeachpoint.Thecalculationformulasaregiven,andtheerrorsareanalyzed.Thismethodcanalsobeusedinotherdistortion-measurementfieldssuchasbuilding,bridgeandmountaindistortionmeasurements.