【摘要】 传统仪器根据不同的功能要求采用不同的硬件结构,受生产厂家定义仪器机箱的约束,其功能由其硬件结构固定,很不灵活;基于虚拟仪器LabVIEW的虚拟直流电压表,能够使用户根据自己的需要,实现检测直流电压和脉冲信号占空比等多种功能;该设计由传感器采集信号,经放大滤波电路处理后由数据采集卡输入计算机,再在虚拟仪器软件上进行分析显示结果;虚拟直流电压表突破传统仪器的限制,降低了成本,容易实施。更多还原

【Abstract】 According to different functions,traditional instruments require different hardware architecture.All the functions are fixed by hardware architecture and the instrument is not very flexible because manufacturer constraints the instrument chassis.The DC voltage meter,based on the virtual instrument programming language LabVIEW,allows the users to achieve the detection of DC voltage and pulse duty cycle,etc..While the instrument is working,the signals are acquired by the sensor,then they are amplified and filtered by the circuit,ducted into computer through the data acquisition card,displayed on the virtual instrument software developed by LabView.Virtual DC voltage meter substantially has not only broken through the restrictions of traditional instruments in data processing and transfering on convenience,but also reduced the cost and easy to implement.更多还原