码头闸口集装箱箱号自动识别系统设计与开发

码头集装箱的进出车辆登记,传统采用人工记录方式,效率低。为了提高码头的运转效率,重要的是减少车辆的登记时间。笔者设计的集装箱箱号自动识别系统,基于轴线扫描和垂直投影的箱号定位,有效地去除了干扰信息,获取准确的箱号位置;同时采用将灰度投影字符分割法和欧式距离字符识别相结合的方法,提高识别效果;采用摄像头拍摄车辆图像,利用监控计算机对图像进行处理,识别出集装箱箱号,录入数据库,并做决策,控制闸口设备的操作。仿真结果表明:该系统可以实现自动录入进出闸口的集装箱箱号,车辆进出闸口无需停车,提高了码头运转效率,减少了塞车机会,并解决了采用射频(RFID)识别系统成本高、难统一标准的难题。

Design and development of container terminal carton number automatic identification system

The traditional way of container terminal vehicle registration is manually, which is time-consuming and low efficient. In order to improve the efficiency, the most important thing is to reduce the vehicle registration time. For the designed automatic identification system, the carton number location is based on the axis scanning and vertical projection which can remove the interferential information effectively, and combining gray-level projection character segment method with Euclidean distance character recognition to improve the recognition effect. Taking vehicle images by cameras and making image processing by monitors, the system can identify the carton numbers,record the results in database, and then make decisions to control all the devices. The simulation results indicate that the system can record the carton numbers automatically, without vehicles stopping, improve the efficiency and reduce the congestion, meanwhile solve the problems of high cost and ununified standards which come from Radio Frequency Identification Devices(RFID).