A novel FBG sensor for simultaneous discriminating measurement of flow-rate and temperature is developed based on target and cantilever beams.While fluid passes through the sensor,the change of flow velocity in the pipeline results in the strain change of target stucture,and then the strain transmits on cantilever beam,the wavelength of FBG1 on it is changed but the wavelength of FBG2 on the other cantilever beam isn′t changed.While the change of temperature of fluid results in the wavelength ch...