Gate Access Control System Using Microwave ID Tag System in Automobile Assembly Plants

In this paper a gate access control system using a microwave identification (ID) tag system is presented. A read/write microwave ID tag system powered by a battery has been developed. The main features of this ID tag system as a stand alone tag are high data transmission rate (2.4kbytes/sec) and low power consumption. A prototype gate access control system using this ID tag system at automobile assembly plants has been developed. For this system, 120 byte data transmission has been typically attained at vehicle speed of 50km/h. This system was applied to the traffic control of delivery trucks in automobile assembly plants. The system has been successfully stood various tests for 1 year. The data retransmission of the system was 0.25% of 15, 000 access but there was no transmission error, thus the prototype system is effective for gate access control in plants.