Temperature measurement device and temperature measurement method

A temperature measurement method for measuring a body temperature of an animal in a non-contact manner apart from a body of the animal, the temperature measurement method comprising:

• a first temperature measurement step for making a first temperature measurement portion measure a temperature distribution of a range covering an object when the animal eats feed via a feed provider for providing the animal with the feed, the first temperature measurement portion for measuring a temperature distribution of a predetermined range in a non-contact manner;
• a second temperature measurement step for making the first temperature measurement portion measure a temperature distribution of a range covering a calibrator including a single heater able to generate heat to a preset temperature and including a heat conductor conducting heat from the single heater and having a temperature gradient such that a part of the heat conductor closer to the single heater has a highest temperature, and the temperature decreases away from the single heater;
• a third temperature measurement step for making second temperature measurement portions measure a temperature distribution of the calibrator, the second temperature measurement portions being provided on installation points on the heat conductor and measuring temperatures at the installation points;
• and
• a calibration step for calibrating a first temperature measurement result obtained from the first temperature measurement step based on temperature differences between a second temperature measurement result obtained from the second temperature measurement step and a third temperature measurement result obtained from the third temperature measurement step.