An Improved Method for Detection of the Pedestrian Flow Based on RFID

摘要

The security of public places has been greatly concerned by the government and organizations in recent decades. Detecting the crowd flow in public places can help alerting the congestion of the channel immediately and making an immediate evacuation policy to prevent the occurrence of extrusion stampede. However, the common detection techniques require special additional hardware components that suffer from too many factors. This paper proposed a method of crowd flow detecting based on RFID by analyzing the factors affecting the RFID link state. Firstly, a pedestrian detection system based RFID is allocated at the entrance of channel where reading RFID tags will be affected when people pass through. And then, the Link State Indicator (LSI) according to the counts of reading tags is considered to get coverage information, while moving status can be inferred by RSSI detection. With the evaluation in different scenarios, the coverage and moving status of the crowd can be verified.