AVR单片机的嵌入式操作系统中实现中断嵌套的分析

简述了在AVR单片机上移植的uCOS-II嵌入式操作系统中关于中断处理的一种方法。主要应用在对实时性要求非常之高的场合中,采用软件手段实现的嵌套可以保证关键中断得到及时的响应。     

小波变换在谐波检测中的应用研究

电网谐波是影响电能质量的重要因素,随着电力电子器件的广泛应用,电网谐波污染问题正日趋严重.因此为了提高电能质量,保证系统的安全运行,必须准确的对谐波进行检测和分析,掌握电力系统中畸变波形含有的谐波,采取相应措施对谐波进行抑制或补偿.将小波变换应用于电力系统谐波检测,选取合适的小波函数,通过MATLAB 仿真,在谐波中提...     

Electric Parameter Measurement System Based on Virtual Instrument

In this paper,virtual instrument technology is applied in the development of an electric parameter measurement system for mobile power stations.Virtual instrument technology is used to measure and analyze electric parameters of mobile power stations.The whole measurement system is composed of computer,data acquisition card and LabView virtual instrument platform.It can be used to monitor,record,and analyze electric parameters of sinusoidal alternating circuit.These parameters include voltage,effective value of current,phase differences,power,and etc.Experimental results show that this virtual measuring device satisfy the requirement of mobile power station monitoring and dynamic property analysis.Hardware and software design of the system will be discussed in detail.