基于Modbus/TCP协议的ATS与FSK系统间通信接口设计

Design of Communication Interface Between ATS and FSK System Based on Modbus/TCP Protocol

根据墨西哥某城市地铁指挥控制系统的设计需求,列车自动监控(ATS)系统与频移键控(FSK)系统之间数据交互采用网络接口,基于Modbus/TCP协议实现相应的以太网通信。为此提出基于Modbus/TCP协议的ATS与FSK系统间通信接口设计方案:利用Modbus/TCP协议的扩展灵活性,在传统Modbus/TCP协议的基础上进行扩展,实现ATS与FSK系统间的模拟列控信息、列车检测信息、FSK传输配置信息、网络配置信息的安全可靠传输;为了高效便捷地将从网口接收的信息解析后传输给FSK系统,选择在ARM/Linux+FPGA平台上实现通信接口。测试验证结果表明:该通信接口设计方案结构清晰且方便移植,能够正确有效地实现ATS与FSK系统间通信。

According to the design requirements of the subway command and control system of a certain city in Mexico,the data exchange between the Automatic Train Supervision(ATS)system and the Frequency Shift Keying(FSK)system adopts a network interface,and the corresponding Ethernet communication is implemented based on the Modbus/TCP protocol.In order to realize the information exchange between ATS and FSK system,a design scheme of communication interface between ATS and FSK system based on Modbus/TCP protocol is proposed.This scheme utilizes the extended flexibility of the Modbus/TCP protocol to expand on the traditional Modbus/TCP protocol,which can achieve safe and reliable transmission of analog train control information,train detection information,FSK transmission configuration information and network configuration information between the ATS and FSK systems.In order to efficiently and conveniently parse and transmit the information received from the network interface to the FSK system,the communication interface is implemented on the ARM/Linux+FPGA platform and tested for verifying.The verification results show that the communication interface structure is clear and easy to transplant,and can correctly and effectively realize the communication between ATS and FSK system.