Design of Embedded GPS Time Server for Rail Transit
Lun Zhang · Technology and Economy in Areas of Communications · 2010
An embedded GPS time server is designed for rail transport operation control system.Take account of the system's reliability,the redundancy hot-backup and delay processing is designed,similarly,take account of the accuracy of the system time,the system embedded NTP network protocol to process network transmission delay.It provides RS485,Zigbee,Ethernet and other access methods to meet the application requirements.System provides precise synchronization time service to rail transport operation control system.