基于VISA的PXI设备访问新方法

New Method of PXI Device Access Based on VISA

摘要:

由于PXI设备的灵活性,在访问过程中需要用户参与到配置过程中;为了方便用户,并增强PXI设备访问的安全性和准确性,避免系统因用户配置问题导致的功能异常,提出了一种基于VISA的以PXI设备串号为基础的设备访问方法;通过将PXI设备的串号信息固化在PXI设备的配置寄存器中,根据设备串号信息自动获得设备资源描述符,进而对设备进行访问;实际应用表明,该方法能够完成对PXI设备的访问,避免了用户的配置过程,实现了PXI设备资源的自动配置,增强了设备访问的安全性和准确性,具有良好的实际应用价值。

Abstract:

Due to the flexibility of PXI Devices, users need to participate in the configuration process. In order to offer convenience to the users, improve the security and veracity, a new method of PXI device access based on VISA has been brought up. By fixing up the serial ID to the configuration register of PXI devices, then get the device resource descriptor automatically by the serial ID and access the devices. The application result shows, the method can access to the PXI devices, and avoid the configuration process of users, realize the automatical configuration of PXI resources, improve the security and veracity, has great value of actual application.