Elongated-object drum, management computer, and elongated-object management system

Abstract

An elongated-object drum includes: a drum on which an elongated object is wound; and a management module that is attached to the drum and comprises: an acceleration sensor that detects acceleration of the drum, a computation device that performs computation based on a detection result from the acceleration sensor, and a storage device that stores a computation result obtained by the computation device based on the detection result from the acceleration sensor.

1 . An elongated-object drum, comprising:
 a drum on which an elongated object is wound; and   a management module that is attached to the drum and comprises:
 an acceleration sensor that detects acceleration of the drum; 
 a computation device that performs computation based on a detection result from the acceleration sensor; and 
 a storage device that stores a computation result obtained by the computation device based on the detection result from the acceleration sensor. 
   
     
     
         2 . The elongated-object drum according to  claim 1 , wherein
 based on the detection result from the acceleration sensor, the computation device determines whether a rotation direction of the drum is a direction of unreeling the elongated object.   
     
     
         3 . The elongated-object drum according to  claim 1 , wherein
 the computation device detects a rotation angle of the drum based on the detection result from the acceleration sensor.   
     
     
         4 . The elongated-object drum according to  claim 3 , wherein
 the computation device calculates a usage amount of the elongated object based on the rotation angle.   
     
     
         5 . The elongated-object drum according to  claim 4 , wherein
 the computation device acquires an unreeling diameter of the elongated object wound on the drum and detects the rotation direction of the drum based on the detection result from the acceleration sensor,   the computation device calculates an amount of the unreeled elongated object based on the rotation angle and the unreeling diameter, in a case where the rotation direction of the drum is same as a direction of unreeling the elongated object,   the computation device calculates an amount of the reeled elongated object based on the rotation angle and the unreeling diameter in a case where the rotation direction of the drum is same as a direction of reeling the elongated object, and   the computation device calculates a usage amount of the elongated object based on the amount of the unreeled elongated object and the amount of the reeled elongated object.   
     
     
         6 . The elongated-object drum according to  claim 3 , wherein
 the computation device calculates a remaining amount of the elongated object based on the rotation angle.   
     
     
         7 . The elongated-object drum according to  claim 6 , wherein
 the computation device acquires, from the storage device, the remaining amount of the elongated object wound on the drum before use of the elongated object,   by subtracting a usage amount of the elongated object from the remaining amount of the elongated object, the computation device calculates a new remaining amount of the elongated object, and   the storage device stores the new remaining amount of the elongated object.   
     
     
         8 . The elongated-object drum according to  claim 1 , wherein
 the computation device detects an abnormality in the drum based on the detection result from the acceleration sensor.   
     
     
         9 . The elongated-object drum according to  claim 1 , wherein
 the management module comprises a location measurement device that acquires location data on the drum.   
     
     
         10 . The elongated-object drum according to  claim 9 , wherein
 the storage device stores the computation result and the location data on the drum in association with each other.   
     
     
         11 . The elongated-object drum according to  claim 9 , wherein
 upon determining that the drum is rotated but does not move based on the detection result from the acceleration sensor and a detection result from the location measurement device, the computation device calculates a usage amount of the elongated object, and   upon determining that the drum is rotated and moves based on the detection result from the acceleration sensor and the detection result from the location measurement device,
 the computation device:
 calculates the usage amount of the elongated object when the rotation direction of the drum is same as a direction of unreeling the elongated object, and 
 does not calculate the usage amount of the elongated object when the rotation direction of the drum is same as a direction of reeling the elongated object. 
 
   
     
     
         12 . The elongated-object drum according to  claim 1 , wherein
 the management module comprises a communication device that communicates with an outside.   
     
     
         13 . The elongated-object drum according to  claim 1 , wherein
 the management module is detachably attached to the drum.   
     
     
         14 . The elongated-object drum according to  claim 1 , wherein
 the elongated object is a cable.   
     
     
         15 . A management computer comprising:
 a communication device that communicates with an elongated-object drum on which an elongated object is wound and that comprises an acceleration sensor; and   a controller that stores management data in a storage device, wherein   the management computer:
 receives, via the communication device from the elongated-object drum, a computation result that is based on a detection result from the acceleration sensor, and 
 stores, in the storage device, the management data in which the elongated-object drum and the computation result are associated with each other. 
   
     
     
         16 . The management computer according to  claim 15 , wherein
 the management computer receives the computation result from a plurality of elongated-object drums including the elongated-object drum, and   the management computer stores, in the storage device, a database in which each of the elongated-object drums is associated with the corresponding computation result, as the management data.   
     
     
         17 . The management computer according to  claim 16 , wherein
 based on the database and a condition inputted regarding the elongated-object drum, the management computer determines the elongated-object drum that meets the condition.   
     
     
         18 . An elongated-object management system comprising:
 an elongated-object drum;   a management computer communicatively coupled to the elongated-object drum; and   a management module that is attached to the elongated-object drum and comprises:
 an acceleration sensor that detects acceleration of the elongated-object drum; 
 a computation device that performs computation based on a detection result from the acceleration sensor; 
 a storage device that stores a computation result obtained by the computation device based on the detection result from the acceleration sensor; and 
 a communication device that communicates with the management computer. 
   
     
     
         19 . The elongated-object drum according to  claim 1 , wherein
 the drum includes:
 a body portion on which the elongated object is wound; and 
 flange portions located at end portions of the body portion, and 
   the management module is attached to the body portion or at least one of the flange portions.   
     
     
         20 . The elongated-object drum according to  claim 1 , wherein
 the drum includes:
 a body portion on which the elongated object is wound; and 
 flange portions located at end portions of the body portion, and 
   the management module is attached to the body portion.