Fecha de publicación: 19/06/2014 Fuente: WIPO "beekeeper" The present invention concerns a monitoring system 1 particularly suitable for monitoring the passage of a bee at an inlet/outlet mouth of a beehive, comprising sensing means 2, having a coverage area such as to cover said mouth and apt to detect the passage of a bee at said mouth; and a processing unit 3 for processing a signal transmitted by the sensing means 2, comprising means for detecting a sense of passage along the direction of motion of the bee.