Study of Personnel Monitoring and Counting in Single Channel based on RFID Technology

In previous studies, the parameters of most personnel tracking and counting were obtained by artificial statistics and image processing, these two ways may be both complicated and time consuming. In this paper, we apply the RFID technology to monitor and count the persons in single channel and introduce the theory of this monitoring and counting system. For the passive tags, we analyzed the characteristics of RSSI. The conclusion that the RSSI of all the tags is inversely to the distance between tag and antenna was obtained, even when the tag is moved in the line parallel with antenna. At the same time, the parameters of pedestrian movement, that is the number of persons, the specific persons, the time and the location when the person is in front of the corresponding antenna could also be obtained according to this system. Besides, the calculation will be much faster than the video processing so the efficiency could be improved greatly.