轨道式运输车辆磁钢检测系统设计

Magnet Detection System Design for Rail Transport Vehicles

采用4只磁钢作为传感装置用于检测轨道式车辆信息,应用信号转接板进行电平转换并将传感信息通过铠装电缆送至PLC,利用PLC实现轨道式运输车辆的判向、测速、计轴和判辆,综合采取抗干扰磁钢、软件容错等多种措施提高了系统的EMC性能。系统设计创新之处一是通过设置校验磁钢有效克服了各种人为因素的干扰,二是巧妙设置N1N2N3并按照先进先出的原则对其进行传递赋值简化了软件设计。本系统广泛用于现代物流生产和交通运输管理过程中涉及火车运输的大中型企业信息管控系统、仓储管理系统等领域,测试精度高,工作稳定可靠,产品成本低。

This paper designed an implement scheme of the magnet automatic measuring system for rail type vehicles. The system consists of four parts of the wheel sensors, signal adapter boards, PLC and power. It can read information of rail type vehicles such as the vehicles＇s direction measuring and vehicles counting and axle counting and velocity measuring. In order to improve system reliability, comprehensive application of the anti-jamming magnet, software fault-tolerant variety of anti-jamming measure. By setting the calibration magnet, the system effectively overcome the interference of a variety of human factors. By cleverly setting registers NININ3 and in accordance with the principle of FIFO N1N2N3 pass assign- ment, software design is simplified. This system is widely used in modern logistics production and transportation manage- ment process of large and medium-sized enterprises involving the train transportation embedded in information management control system or warehouse management control system with high precision, stable and reliable performance, the low prod- uct cost.