【摘要】 为满足电子类实验教学对示波器功能及性能指标的要求,设计了参数可灵活设定、应用场所不受空间限制的无线示波器设备。系统以FPGA(Field Programmable Gata Array)作为主控制器用于信号的处理,硬件部分主要由信号调理模块、A/D(Analog-to-Digital)转换模块、无线传输模块、电源模块组成,上位机基于Labview可视化编程软件设计。硬件采集处理部分与软件客户端通过WIFI技术进行参数与信号传输,使观测效果不受被测点空间位置的限制。系统可同时实现4路信号的采集与无线观测。经测试,该系统最高可分辨700 k Hz的波形特征,可准确测试2 MHz的信号频率与幅值。该系统与实验室现有传统示波器互为补充,可满足本科实验教学及课外实践的设备要求。更多还原

【Abstract】 In order to meet the requirements of electronic experimental teaching for oscilloscope function and performance,the wireless oscillograph is designed,its parameters can be set flexibly,and its application is not restricted by space. The system uses FPGA(Field Programmable Gata Array) as the main controller for signal processing,and the hardware is mainly composed of signal conditioning module,A/D(Analog-to-Digital)conversion module,wireless transmission module and power module. The host interface is designed based on Labview visual environment. The parameters and signal transmission between data acquisition system and software client is realized by WIFI technology. And the observation effect is not limited by the space position of the measured point. The system can collect and observe 4 signals simultaneously. After a series of tests,we confirm that the waveform shape of the signal with highest frequency 700 kHz can be distinguished,and the frequency and amplitude of the signal with highest frequency of 2 MHz can be accurately tested. The designed instrument and the laboratory traditional oscilloscope complement each other,and can meet the equipment requirements for undergraduate experimental teaching and extracurricular practice.更多还原