为解决高速图像采集控制卡在分时操作系统( Windows)下实时性差、不稳定、控制复杂等问题，设计了一种基于嵌入式实时操作系统VxWorks的PXI总线高速数据采集控制接口。完成了PXI接口的逻辑设计，并结合VxWorks中设备驱动的特点，对驱动进行了开发、封装和整合。经试验验证，该设计可以有效实现VxWorks环境下PXI设备的控制和数据传输，接口工作稳定可靠，可广泛应用到对实时性要求较高的数据采集系统中。%To solve the unreal-time, instability and complexity control problem that the high-speed image acquisition control card meets under TSOS ( Time-sharing Operating System) , a PXI bus high-speed data acquisition and control interface was de-signed based on RTOS( Real-time Operating System) VxWorks. The logic design of PXI interface was completed, and driver was developed, packaged and integrated in combining the characteristics of the device driver on VxWorks. It was verified by test, this design can achieve data transmission and control effectively for PXI devices under VxWorks. The interface works stable and relia-ble, so that this design can be widely applied to the real-time data acquisition system of high demand.
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