Unmanned work system, management server, and unmanned work machine

A management server that is a computer and that mutually communicates with unmanned work machines that perform work while traveling without a human operator, the computer functions as:

• a case storage section that stores a case related to a failure in and/or a case related to maintenance of each of the unmanned work machines in association with operation information including information indicating a work state of each unmanned work machine from which the case or cases derive;
• an information acquisition section that acquires the operation information from the unmanned work machines;
• a maintenance determination section that determines whether or not maintenance of the unmanned work machines is necessary, based on the case associated with operation information identical or similar to the operation information acquired by the information acquisition section;
• and
• a maintenance notification section that notifies maintenance to the unmanned work machines, based on a determination result made by the maintenance determination section,
• wherein each of the unmanned work machines includes a blade for mowing lawn grass, and a camera that shoots a cut surface of the lawn grass mown by the blade and a lawn area of a mowing-target,
• the operation information includes information related to a load at time of lawn mowing work for mowing lawn grass and image data obtained by shooting with the camera, and
• the operation information including the information related to the load and the case related to abrasion of the blade and/or the case related to dirt on a relevant one of the unmanned work machines are stored in the case storage section in association with each other, and
• the maintenance determination section identifies either the abrasion of the blade or the dirt on the relevant unmanned work machine, based on the information related to the load and the image data of the cut surface of the lawn grass and the lawn area.

An unmanned work machine that performs work while traveling without a human operator and mutually communicates with a management server, the unmanned work machine comprising a processor that functions as:

• an information transmission section that transmits operation information including information indicating a work state;
• and,
• a maintenance notification acquisition section that acquires a maintenance notification notifying maintenance from the management server,
• the unmanned work machine comprising:
• a blade for mowing lawn grass, and
• a camera that shoots a cut surface of the lawn grass mown by the blade and a lawn area of a mowing-target,
• wherein the maintenance notification is generated by the management server, based on, of cases related to a failure and/or cases related to maintenance stored in association with the operation information from unmanned work machines, a case associated with operation information identical or similar to the operation information transmitted by the information transmission section,
• the operation information includes information related to a load at time of lawn mowing work for mowing lawn grass and image data obtained by shooting with the camera,
• the operation information including the information related to the load and the case related to abrasion of the blade and/or the case related to dirt on the unmanned work machine are stored in the management server in association with each other, and
• the maintenance notification is generated based on the information related to the load and the image data of the cut surface of the lawn grass and the lawn area.