Abstract: An abnormality detection system includes a removable battery and a server. The removable battery has: a detector; a battery side acquisition unit for acquiring measured data that are the data of measured values measured by the detector and acquiring, from an object to be electrically driven, first recognition data for recognizing the object to be electrically driven; and a battery side storage unit. The server has: a server side storage unit for prestoring reference data that are the data acquired when the object to be electrically driven performs a predetermined operation; a server side acquisition unit for acquiring the measured data, the first recognition data, and second recognition data; and an abnormality detection unit for comparing actual work data obtained from the measured data with the reference data and detecting an abnormality when the difference between the actual work data and the reference data exceeds a threshold value.

Abstract: A work system includes a plurality of working machines each including a working unit; and a power feeding device configured to supply power to the plurality of working machines. The plurality of working machines includes a plurality of types of working machines different in amount of power required to drive the working unit. The power feeding device includes at least one first power transmission unit configured to wirelessly transmit power to a working area of the plurality of working machines. Each of the plurality of working machines includes a power reception unit configured to receive the power wirelessly transmitted to the working area.

Abstract: An information processing apparatus is provided that generates use plan information of batteries for performing each step included in tasks by electrical machines capable of sharing batteries. The apparatus stores a number of batteries to be used for each type of the machine, a battery duration for each type of the machine, and a time required for charging the battery, receives a working schedule including a procedure of the steps, a time required for each of the steps, and types and numbers of machines used in each of the steps, and generates, based on the input information, use plan information of batteries including the number of the batteries required for the series of tasks and charging timings of the batteries.