Information processing system, information processing method, and program

An information processing system for a sensor unit, the sensor unit comprising at least one concentration sensor configured to come into contact with fluid and output an electromotive force that has a correlation with a concentration of target particles contained in the fluid, the concentration sensor comprising:

• a first thermoelectric conversion part configured to generate the electromotive force due to a temperature gradient and including a first measuring surface;
• an interaction portion
• configured to perform heat exchange with the first thermoelectric conversion part via the first measuring surface, and
• configured so that, when being activated, an amount of heat during the heat exchange changes due to a degree of interaction caused by contact with the target particles contained in the fluid;
• and
• a first temperature adjustment part configured to adjust temperature such that the temperature of the interaction portion becomes a preset drive temperature that is higher than a minimum temperature at which the interaction portion can be activated,
• the information processing system comprising at least one control circuit configured to execute each of following steps including:
• an acquisition step of acquiring, from the sensor unit, at least a measurement result related to the concentration of the target particles and a value related to the temperature of the interaction portion;
• and
• an output step of outputting a concentration of the target particles contained in the fluid which is corrected by using a correction value, based on the correction value specified based on a value related to the temperature of the interaction portion and the measurement result in at least a portion of period from an initial temperature until the temperature of the interaction portion reaches the drive temperature.