Harvesting area on-line measuring device of combine harvester

The utility model discloses a harvesting area on-line measuring device of a combine harvester, which comprises a host and a group of sensors. The host comprises a single chip microcomputer system, a liquid crystal display screen, a group of status indicator lamps and a group of setting buttons. The group of sensors comprises an actual harvesting range sensor, a traveling speed/displacement sensor, a header status sensor and a temperature sensor. The fundamental operating principle includes employing the actual harvesting range sensor to detect actual harvesting range of the combine harvester, utilizing the speed/displacement sensor to detect effective stroke and traveling status, utilizing the header sensor to detect header status and finally synthesizing all the information to calculate accumulated working areas during the working process of the combine harvester. The harvesting area on-line measuring device overcomes shortages in the prior art and can on-line measure harvesting areas of combine harvesters accurately.