Wearable device incorporating a device for measuring ambient temperature

A wearable device comprising:

• a temperature measurement device to measure an ambient temperature, wherein the temperature measurement device includes:
• an infrared sensor,
• a control circuit connected to the infrared sensor, and
• a processing circuit connected to the infrared sensor and configured to process measurement signals supplied by the infrared sensor, wherein
• in an ambient temperature measurement mode, the infrared sensor is to receive an infrared radiation from at least one object and/or surface that is outside of and not a part of the wearable device;
• wherein
• in said ambient temperature measurement mode, the control circuit is configured to activate the infrared sensor several times so that the infrared sensor supplies a plurality of measurement signals over a certain period of time;
• wherein
• in the ambient temperature measurement mode, the processing circuit is configured to supply temperature values corresponding to at least a portion of said plurality of measurement signals, and to take a mean of at least a portion of the temperature values to obtain an average temperature value that is representative of the ambient temperature;
• wherein
• the wearable device further comprises an inclinometer, which is to measure an angle between a terrestrial reference direction and an orientation direction of said infrared sensor;
• and wherein
• in said ambient temperature measurement mode, either said control circuit is configured to activate the infrared sensor only when said measured orientation direction is located in a certain angular space, or said processing circuit is configured to exclude a measurement signal received from the infrared sensor when said measured orientation direction is located outside said angular space.