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设计了一个多功能数字仪用表,可以实现电阻、电压、电流的测量和波形的检测、谱分析以及显示。硬件上采用AD830+FIFO的结构实现双通道数据同步,软件上采用u COS-II实时操作系统实现了全触屏仿windows桌面视图显示。整个系统硬件电路由测量电路,信号调理、触发电路、自动测量电路、数据采集与处理以及人机交互等电路组成。相比于常规示波器,本系统采用了高性能STM32F4作为内核,并且在内核上嵌入u C/OS-II系统,因此达到了快速、稳定以及多功能的特点,并且具有优良的人机交互界面。
A multifunctional digital meter is designed to measure resistance, voltage, current and waveform, analyze spectrum and display. Hardware using AD830 + FIFO structure to achieve dual-channel data synchronization, the software used u COS-II real-time operating system to achieve a full touch screen imitation windows desktop view display. The entire system hardware circuit from the measurement circuit, signal conditioning, trigger circuit, automatic measurement circuit, data acquisition and processing, and human-computer interaction circuits. Compared with the conventional oscilloscope, the system uses high-performance STM32F4 as a kernel, and embedded in the kernel u C / OS-II system, so as to achieve a fast, stable and multi-functional characteristics, and has excellent human-computer interaction interface.