介绍了基于高速虚拟示波器的脉冲磁场测量系统软件的设计方法,该设计较以前有了很大的改进,高速虚拟示波器首次应用于该领域.设计中实现了全自动数据采集,处理分析及保存.自动化取点减轻了测量的工作量,使用精密运动台增强了定位的精度.使用LabVIEW通过调用动态链接库,得到虚拟示波器采集到的信号数据,并设计了触发、幅值调节、采样率设置等功能常见示波器功能.软件采用了一维样条差值弥补了硬件采样率较低的缺陷,采用带阻滤波器大大降低了信号的噪声.软件自动测控的核心是步进电机运动控制和数据采集状态机,可以无人值守完成数据的采集、处理、存储.使用NI - IMAQdx软件和数据库连接工具包分别实现了实验环境的视频监控和与MySQL数据库连接.对原始采集信号及经过信号处理后的波形做了对比,使用信号处理方法使原始波形得到了极大的改善.%It introduces a method of a software development which is based on high speed PC oscilloscope for pulsed magnetic field measurement system. The previous design has been improved by this design, high - speed virtual oscilloscope has been used in the field for the first time. In the design, the automatic data acquisition, data process, data analysis and storage have been realized. Automated point checking reduces the workload. The use of precise motion bench increases the positioning accuracy. The software gets the data from PC oscilloscope by calling DLLs and includes the functions of oscilloscope, such as trigger, ranges, and sample rate settings etc. Spline Interpolation and Bandstop Filter are used to denoise the signals. The core of the software is the state machine which controls the motion of stepper motors and data acquisition and stores the data automatically. NI Vision Acquisition Software and Database Connectivity Toolkit make the video surveillance of laboratory and MySQL database connectivity available. The raw signal and processed signal have been compared in this paper. The waveform has been greatly improved by the signal processing.
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