Tag sensor system and sensor device, and object position estimating device and object position estimating method

摘要

A position identifying system (1) is comprised of a radio terminal device (2) carried by a monitoring target and a sensor device (3) provided with a radio communication unit (9) for communicating by radio with the radio terminal device (2) and a camera unit (10) for taking an image of the monitoring target. In the sensor device (3), the position (tag position) of the radio terminal device (2) is detected on the basis of a detection signal from the radio terminal device (2), and the position (image position) of the monitoring target is calculated on the basis of the image taken by the camera unit (3). By linking the tag position with the image position, the position of the monitoring target is identified. Thus, there is provided the position identifying system capable of identifying the position of the monitoring target and keeping track of the movement of the monitoring target even if the image of the monitoring target cannot be taken.