Abstract: A carriage that records data while moving on a rail system including a first moving unit located on one side of the rail and configured to move along the rail, a second moving unit located on a different side of the rail from the first moving unit and configured to move along the rail, a spring unit configured to slide one or more of the moving units in a direction perpendicular to the direction of the rail, and a position maintaining unit located between the first moving unit and the second moving unit, wherein the position maintaining unit prevents the first moving unit or the second moving unit from sliding more than a predetermined distance when traveling along the rail.

Abstract: A system for monitoring vegetation in a predetermined space includes an image capturing unit, a lighting unit, a rail unit on which the image capturing unit and lighting unit move, wherein, in a case where a lighting condition of the predetermined space is a first lighting condition, the image capturing unit performs image capturing of the vegetation, and wherein, in a case where the lighting condition of the predetermined space is a second lighting condition, different from the first lighting condition, the image capturing unit does not perform image capturing.