列车出入库自动识别系统设计

Design of a Train’s Incoming and Outcoming Automatic-Identification System

为了实现列车出入库信息的自动记录,设计了一套基于物联网技术的列车出入库自动识别系统,包括智能传感器节点、网关、服务器及客户端;智能传感器节点自带大容量电池,采用超声波传感器识别列车出入库,使用RFID技术获取列车信息,通过LoRa通信的方式将数据经LoRa网关发送到LoRa通信服务器,LoRa通信服务器再将数据转发至数据库服务器;智能传感器节点与LoRa网关之间采用LoRaWAN协议,LoRa网关与LoRa通信服务器之间采用MQTT协议,LoRa通信服务器与数据库服务器之间使用WebService方式传递消息;客户端通过B/S方式访问列车出入库的历史信息和实时信息;实际应用效果表明,系统具有功耗低、自动识别、运行稳定等特点。

Based on Internet of things(IoT) technology, a train’s automatic-identification system was designed for recording the information of train’s incoming and outcoming action. The system includes intelligent sensor node, gateway, server and client. Equipped with high-capacity battery, the intelligent sensor node identified train’s incoming and outcoming action by ultrasonic sensor, and got train’s information by Radio Frequency Identification (RFID) technology, then transported the information to Long Range Radio (LoRa) server through LoRa gateway. Finally, database server received the information from LoRa server. LoRa Wide Area Network(LoRaWAN) protocol was used between intelligent sensor node and LoRa gateway, and Message Queuing Telemetry Transport(MQTT) protocol was used between LoRa gateway and LoRa server, and WebService technology was used between LoRa server and database server. Client can get history information and realtime information by Browser/Server(B/S) mode. The result shows that the system has advantages of low-power,automatic-identification and high-stability.