基于多系统的1553B和串行通信的PXI板卡设计

Design of 1553B and UART PXI Bus Board Based on Multi-OSP

摘要:

为了满足箭上单机设备的通用化测试需求,设计了适用于航天领域的基于多系统的1553B总线和串行通信的PXI板卡;介绍了板卡的主要功能、基本原理、硬件设计、Windows系统和VxWorks系统下软件驱动开发,用户层软件设计等;工程应用表明:板卡在-40~70 ℃环境温度下,1553B通信速率1 Mbps,多路串行通信波特率800 bps至8M bps的条件下实时传输无误码,运行稳定,在多系统平台下图形显示实时性能高,板卡已经在多种箭上设备的通用测试中得到广泛应用。

Abstract:

In order to satisfy the general test requirements for launch vehicle control equipments , we designed the 1553B and UART PXI bus board applied in aerospace test field. The main function, the constitution , the working principle, the hardware design ,the board driver program based on Windows or VxWorks operating system, the user application software are described。The experiments show that the PXI bus board is reasonable in design , high reliability, good result for performance and measurement of parameters test. It can flexibly realize 1553B bus and multi-channel RS-232 or RS-422 or RS-485 serial communication function . The board has been successfully used in testing of some electronic devices.