具有自愈功能的PC/104接口板的设计

The Design of Optical Fiber Self-healing Ring Interface Module

为了改善导弹控制系统的性能,设计PC/104接口板模拟工业控制现场控制器。通过CAN总线与CPLD合并为PC/104总线接口,用总线接口卡从ISA总线上得到数据;通过光收发一体模块发送数据帧到另一端的总线接口板卡上,同时读取另一段总线接口板卡的发送数据;重点给出了基于CPLD的光纤自愈接口电路的实现方法。该设计提高了控制系统的可靠性,增强了抗震和抗电子干扰的能力。

In order to improve the performance of missile control system, industrial controller is simulated for this PC/104 interface card, and then combine with CAN bus and CPLD to be a PC/104 bus interface. The bus interface receives data from ISA bus, then transmits the data frame to another bus interface by optical fiber transceiver module. At the same time, the bus interface provides the data frame transmitting by another bus interface for PC/104. Finally,the method of optical fiber self-healing interface circuit based on the CPLD is given. This design greatly improves the reliability,aseismicity and anti-interference of control system.