基于LabVIEW的磁共振射频接收单元自动化测试系统

A LabVIEW-Based Automatic Test System for MRI RF Receiving Unit

为了解决磁共振射频接收单元手动测试繁杂耗时的问题,设计了一套基于LabVIEW的自动化测试系统。采用信号源、计算机配合自制的采集控制单元和时钟源组成测试系统的硬件平台。系统软件基于LabVIEW开发,采用分层次模块化架构,借助VISA软件包、动态链接库和AcitveX技术分别实现了仪器控制、数据采集和数据保存。利用该系统对某射频接收单元进行了实际测试,结果表明,该系统高效、稳定且扩展灵活,具有很强的实用意义。

It is complicated and time-consuming to test MRI RF receiving unit manually. In order to solve this problem, a set of automatic test system based on LabVIEW is presented here. The hardware platform is composed of a signal source and a computer together with homemade acquisition control unit and clock source. The software is developed based on LabVIEW and adopt the hierarchical modular architecture. Using VISA package, DLL and AcitveX, it realizes the instrument control, data acquisition and data storage. Actual tests for RF receiving unit is carried on with this system. The results show that the system is efficient, stable and flexible expansion, which has a strong practical significance.