Abstract: A system for supplying a gas to a supply target from a fluid of a gas-liquid mixture stored in a pressure vessel, comprising: a first line connected to a layer of the gas in the pressure vessel; a second line connected to a layer of the liquid in the pressure vessel and having a vaporizer in the middle and merging into the first line downstream of the vaporizer; a valve disposed between the pressure vessel and the vaporizer in the second line; a pressure gauge for obtaining a pressure in the pressure vessel; and a control device, wherein the control device receives pressure information from the pressure gauge and, when the internal pressure of the pressure vessel falls below a predetermined value, controls to open the valve and supply the vaporized gas in the vaporizer in the second line from the first line to the pressure vessel.

Abstract: Provided is a position detecting method for detecting a winding position of a reinforced fiber impregnated with resin when a plurality of hoop layers is formed in a cylindrical portion of a liner. The position detecting method includes: an imaging step of taking, by an imaging portion, a captured image of the reinforced fiber just after the reinforced fiber is wound around a hoop layer illuminated with oblique light by a lighting assembly, the imaging portion having an optical axis set at the same angle as an optical axis of the lighting assembly around a central axis of the liner; and a detecting step of detecting the winding position of the reinforced fiber based on the number of high intensity pixels or the number of low intensity pixels in each pixel column arranged in an axial direction of the liner in the binarized captured image.

Abstract: Provided is a position detecting method for detecting a winding position of a reinforced fiber impregnated with resin when a plurality of hoop layers is formed in a cylindrical portion of a liner. The position detecting method includes: an imaging step of taking, by an imaging portion, a captured image of the reinforced fiber just after the reinforced fiber is wound around a hoop layer illuminated with oblique light by a lighting assembly, the imaging portion having an optical axis set at the same angle as an optical axis of the lighting assembly around a central axis of the liner; and a detecting step of detecting the winding position of the reinforced fiber based on the number of high intensity pixels or the number of low intensity pixels in each pixel column arranged in an axial direction of the liner in the binarized captured image.