Flexible Design and Prototype Research of the Wayside Inspection System for Bogie Faults Detection
This study focuses on the wayside inspection system for bogie faults detection,including hardware and software design,and prototype implementation.The system is composed of three independent units,the wheel rail contact force detection module,the bogie stability detection module and the vehicle curving performance detection module.The contact force detection subsystem focuses on the wheel thread damages and wheel loads imbalance by strain measuring of rail waist and proximity switches.The bogie stability detection subsystem focuses on the high-speed running stability and asymmetrical wear of the wheelsets by measuring dynamic geometry gap with non-contact eddy current sensor.The curving performance detection subsystem focuses on the curving safety related faults such as the derailment factor,load reduction and abnormal lateral force of the axle.The design modes in software engineering were adopted for flexible requirement expansion.The function modules were designed with tight aggregation within modules and loose coupling between modules.Based on the producer-consumer and data queues design modes,the system integration mechanism was implemented,including heterogenic data acquisition hardware integration,multiple data sampling rates synchronization,data asynchronous processing algorithm and database access.The user interface was built by the local Web server and remote explorer.The data visualization in remote user interface is completely decoupled with the wayside data center.
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