| 摘要 |
In this monitoring device (1), objects in a detection area are detected by means of an optical sensor (13), and the movement speed and movement direction of the objects are calculated on the basis of the change over time of position information of said objects. Furthermore, objects that satisfy prescribed movement conditions are determined to be moving objects. By this means, intrusion of moving objects into the detection area is monitored. In this monitoring device, furthermore, a determination unit (10e) determines whether or not an object has been detected in a range configured to include the proximity of the positions through which a detected moving object has passed (a post-passage detection range). Further, if an object was detected in said range, the detection unit determines whether or not said object stayed in said position for a predetermined determination period or longer. This determination result is outputted by an output unit (12). |
