Emergency detection device, emergency detection system, recording medium, and method therefor

Abstract

The emergency detection system includes a position information acquisition section, a presumption section, a determination section, and a notification section. The position information acquisition section acquires position information that indicates temporal changes of current positions of a plurality of portable terminals obtained using a GPS. The presumption section presumes a point of emergency occurrence on the basis of the position information acquired by the position information acquisition section. The determination section examines whether or not the point presumed by the presumption section corresponds to an exclusion area, and determines that the point presumed by the presumption section is the point of the emergency occurrence in the case where the point does not correspond to the exclusion area. The notification section notifies the point of the emergency occurrence, which is determined by the determination section, to terminals at a preset destination of the notification.