A modular material tracking system is provided for tracking material stored on and drawn from a reel using a modular system. The modular material tracking system may include a detection element, digital logic components, location receiver, enclosure, analytic components, interface component, sensor module, and plate module. One or more sensors relative to the reel may detect a position indicative of forward or reverse reel rotation. A processor may analyze signals to count rotations of the reel, which is savable in memory. A battery may provide power. The system may also record the time and location associated with rotations. A method for tracking material stored on and drawn from a reel using a modular material tracking system is also provided.

A management device that manages a unit including a drum and a long object wound around the drum, the management device includes: a receiver that receives, from a user terminal, a captured image obtained by capturing an image of the unit; and a controller that accesses correspondence data obtained by associating each of image capture results, obtained by successively capturing images of the unit while winding the long object around the drum, with a corresponding winding amount of the long object wound around the drum at a time when the each of the image capture results was obtained. The controller determines a remaining amount of the long object based on the captured image and the correspondence data.

A management device that manages a unit including a drum and a long object wound around the drum, the management device includes: a receiver that receives, from a user terminal, a captured image obtained by capturing an image of the unit; and a controller that accesses correspondence data obtained by associating each of image capture results, obtained by successively capturing images of the unit while winding the long object around the drum, with a corresponding winding amount of the long object wound around the drum at a time when the each of the image capture results was obtained. The controller determines a remaining amount of the long object based on the captured image and the correspondence data.

A wire length calculation system is provided for tracking wire stored on and drawn from a reel. The wire length calculation system may include a detection element, digital logic components, location receiver, enclosure, analytic components, interface component, and sensor module. One or more sensors relative to the reel may detect a position indicative of forward or reverse reel rotation. A processor may analyze signals to count rotations of the reel, which is savable in memory. A battery may provide power. The system may also record the time and location associated with rotations. A method for tracking wire stored on and drawn from a reel using a wire length calculation system is also provided.

A wire length calculation system is provided for tracking wire stored on and drawn from a reel. The wire length calculation system may include a detection element, digital logic components, location receiver, enclosure, analytic components, interface component, and sensor module. One or more sensors relative to the reel may detect a position indicative of forward or reverse reel rotation. A processor may analyze signals to count rotations of the reel, which is savable in memory. A battery may provide power. The system may also record the time and location associated with rotations. A method for tracking wire stored on and drawn from a reel using a wire length calculation system is also provided.