Information communication device of vehicle, information management server, and information communication system

An information communication device that is mounted on a vehicle including an internal combustion engine as a driving force source for traveling and that is configured to transmit information to an information management server, the information communication device comprising:

• a first processor configured to determine that refueling of the vehicle is started in response to receiving a detection signal indicating a fuel level in a fuel tank of the vehicle;
• a data communication module configured to communicate with the information management server, wherein the data communication module is further configured to receive a GPS signal and identify a refueling position where the vehicle is being refueled in a region based on the GPS signal in a case where the first processor has determined that the refueling of the vehicle is started;
• a sensor configured to measure sulfur dioxide concentration in an exhaust gas produced by the internal combustion engine after the vehicle has been refueled;
• a memory;
• and
• a second processor configured to
• calculate an average value of the sulfur dioxide concentration at predetermined time intervals during a period between a time the first processor determined that the refueling of the vehicle is started and a time the first processor determines that a subsequent refueling of the vehicle is started, wherein the second processor calculates the average value by averaging the sulfur dioxide concentration previously acquired from the sensor with latest sulfur dioxide concentration,
• store the calculated average value in the memory as an updated average value of the sulfur dioxide concentration associated with the refueling position, and
• stop calculating the average value in a case where the first processor has determined that the subsequent refueling of the vehicle is started, wherein
• the data communication module is further configured to transmit the updated average value of the sulfur dioxide concentration associated with the refueling position to the information management server as sulfur dioxide concentration information for the region in the case where the first processor has determined that the subsequent refueling of the vehicle is started, so that the sulfur dioxide concentration information for the region is reflected in real time in data accumulated on the information management server.