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2下载:
采用12位MAX 197对外部信号采样。采用全周波傅立叶积分算法,对采样信号进行处理,对电力系统的电压有效值、功率等特征量进行实时在线监测;采用全数字测量法测量相位差;并采用自适应技术调整采样间隔,消除非同步采样对计算造成的误差,利用PIC18F458捕获功能实时监测电力系统频率波动,修订采样间隔。分析了各量的测量误差,均达到标准。并提供友好的人机交互界面。-used 12 MAX 197 pairs external signal sampling. Using Fourier-Cycle I
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运用TLC5510A高速(20M),扫描出波形,测量相位差,两个TLC5510A测两个波形.
-TLC5510A use of high-speed (20M), scanning waveform, phase difference measurement, Measuring 2 2 TLC5510A waveform.
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A new cable fault location method based on
wavelet reconstruction is proposed. In this method the
difference between the currents of faulty phase and sound
phase under the high voltage pulse excitation is used as the
measured signal and is de
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低频数字式相位测试仪,本设计给出了以凌阳16位单片机Spce061A为核心的数字式相位测量的基本原理与实现方案。该系统由相位测量仪、数字式移相信号发生器和移相网络三个模块构成,分别由两块单片机独立地实现控制与显示功能。采用DDS技术生成两路正弦波信号,并通过改变存储器中数据读取的起始地址来实现数字移相的功能,用Ф-T变换技术来实现相位差的测量,使得测量分辨率精确到0.1º ,测得的频率与相位差值送入LCD进行显示,加入红外键盘以及语音播报的功能,使得系统具有智能化、人性化的特色。-Low
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低频数字式相位测量仪,数码管显示相位差,精度为0.1-Low frequency digital phase measuring instrument, digital pipe display phase difference
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STM32单片机,采用数字相关法测量两路波的相位差,内含工程,进行了模拟数据测试通过,稍微修改即可使用,并附上了理论文档。-STM32 microcontroller, using digital Correlation Method for Measuring the phase difference between two waves, including engineering, tested by simulated data, you can use slightly modified
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MSP430单片机根据相位差测功率因数程序,并用5110显示屏显示-MSP430 single chip microcomputer program according to the phase difference measuring power factor, and 5110 display shows
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