Determination apparatus, mobile object, computer-readable storage medium, and determination method

A mobile object, comprising:

• a driving unit configured to output driving force for moving the mobile object;
• a fluid containing, as a principal component, a lubricant agent to be used for lubricating a machine component constituting at least part of the driving unit;
• a pump;
• and
• a determination apparatus configured to determine deterioration of the fluid to be used in circulation, the determination apparatus comprising:
• at least one processor;
• a power index acquisition section that uses the at least one processor to acquire information indicating a value of a power index, which is an index that represents a state of the pump for circulating the fluid and is correlated with magnitude of power consumption of the pump;
• and
• a determination section that uses the at least one processor to, based on the value of the power index, determine (i) whether the fluid has deteriorated, (ii) a degree of the deterioration of the fluid, and/or (iii) necessity of replacement of the fluid, wherein
• the determination section is configured to,
• by using a determination model generated by machine learning for determining (i) whether a transported fluid has deteriorated, (ii) a degree of deterioration of the transported fluid, and/or (iii) necessity of replacement of the transported fluid, from the value of the power index regarding a transport pump for transporting the transported fluid,
• output information indicating (i) whether the fluid has deteriorated, (ii) the degree of the deterioration of the fluid, and/or (iii) the necessity of the replacement of the fluid, from the information indicating the value of the power index acquired by the power index acquisition section,
• the determination apparatus further comprises:
• a fluid temperature acquisition section that uses the at least one processor to acquire information indicating a temperature of the fluid in each of a plurality of sampling periods included in a determination period in which determination processing of the deterioration of the fluid is to take place;
• and
• a decision section that uses the at least one processor to decide whether to execute the determination processing of the deterioration of the fluid, wherein
• the decision section is configured to,
• if an absolute value of difference between the temperature of the fluid in an (n−1)th sampling period (n is an integer equal to or greater than 2.) of the plurality of sampling periods and the temperature of the fluid in an nth sampling period of the plurality of sampling periods does not meet a predetermined condition,
• decide not to execute the determination processing, or not to output a determination result of the determination processing even if executing the determination processing, and
• the predetermined condition includes a condition that the absolute value is greater than a predetermined value, or a condition that the absolute value is equal to or greater than a predetermined value.