Sensor device, sensor management system, method for controlling sensor device, and computer-readable recording medium

A method for controlling a sensor device, comprising:

• a measurement step for measuring a measurement subject by a sensor unit;
• a difference calculation step of calculating a difference between a predetermined threshold value and a current measured value of the measurement subject, measured at a current time by the sensor unit;
• a change amount recording step for recording a maximum amount of change among a plurality of measured values of the measurement subject, measured over each of a plurality of elapsed times;
• a minimum time calculation step of calculating a minimum arrival time for the measurement subject to arrive at the predetermined threshold value from the current measured value based on the calculated difference and the recorded maximum amount of change;
• a measurement time determination step of determining a time of a next measurement of the measurement subject as the calculated minimum arrival time from the current time when the calculated minimum arrival time is more than a device minimum time interval at which the sensor device can measure the measurement subject, and as the device minimum time interval from the current time when the device minimum time interval is more than the calculated minimum arrival time;
• and
• a sensor control step of controlling the sensor unit so as to measure the measurement subject at the determined time of the next measurement, to reduce power consumption associated with the measurement.