动态电子轨道衡数据采集系统设计

摘要

提出了一种动态电子轨道衡数据采集系统的设计方案,重点介绍了影响系统性能的称重通道的硬件设计.该系统采用可编程增益放大器AD625及二阶低通滤波电路对传感器信号进行初步处理；采用带光电隔离的模入接口卡PCI-8325B实现AD转换,并通过PCI总线将数据送入前端主机进行软件处理,处理后的数据通过网桥或Modem送往终端计算机,实现数据的统一管理.试验结果表明,该系统满足工程实际应用需要.%The paper proposed a design scheme of data collection system of dynamic electronic railway scale and mainly introduced hardware design of weighing channel which influences performance of the system. The system uses AD625 and second-order low-pass filtering circuit to make primary process for sensor signal, and uses PCI-8325B to realize AD conversion for the processed data and sends the data to front host to make software process through PCI bus, then sends the data to terminal computer through network bridge or Modem to realize unified management for the data. The test result showed that the system meets with actual application requirements of object.