The invention relates to a fixed-person
management system based on PLC + RFID. The
system comprises an upper computer, a high-frequency RFID card writer, a main controller, an industrial switch, a distributed controller, a
pedestrian barrier gate, a high-frequency
card reader, a
grating, a vehicle barrier gate, an ultrahigh-frequency
card reader, an LED screen and an audible and visual alarm, the upper computer is connected with the high-frequency RFID card writer through a
USB data line, and the upper computer is connected with the main controller through the
Ethernet. The main controller and the distributed controller are connected to the industrial switch through the
Ethernet, the
pedestrian barrier gate, the vehicle barrier gate and the audible and visual alarm are connected to the digital quantity output end of the distributed controller through
signal lines, and the
grating and the audible and visual alarm are connected to the digital quantity input end of the distributed controller through
signal lines. The high-frequency
card reader and the ultrahigh-frequency card reader are connected to the distributed controller through an RS485
bus, and the LED screen is connected to the distributed controller through the
Ethernet. The
system has high stability, safety and expandability, and can meet the requirement for fixed-person management of most dangerous places.