Monitor device provided with camera for capturing motion image of motion of robot device

A monitor device for monitoring a motion of a robot device including a robot and an operation tool attached to the robot, comprising:

• a camera for capturing a motion image of a motion of the robot device;
• a status detector for detecting an operational status of the robot device;
• and
• an arithmetic processing device for acquiring the motion image captured by the camera and an output of the status detector;
• wherein
• the arithmetic processing device including:
• a storage unit for storing predetermined information;
• a storage control unit for operating the information stored in the storage unit;
• an extraction unit for extracting part of the information stored in the storage unit;
• and
• a determination unit for determining the operational status of the robot device,
• the storage control unit performs control for storing a motion image in the storage unit, the image being captured by the camera and attached with a time or an elapsed time from a predetermined reference time, control for storing a variable number in the storage unit, the variable number being acquired from the output of the status detector and attached with the time or the elapsed time, and control for deleting a motion image captured before a predetermined period preceding a current time,
• the determination unit determines whether the operational status of the robot device deviates from a predetermined reference operational status, and
• if the determination unit determines that the operational status of the robot device deviates from the reference operational status, the extraction unit extracts, from the storage unit, a motion image captured in a predetermined period including a period preceding the deviation from the reference operational status and stores an extracted motion image in the storage unit.