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Description: 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 Integration Algorithm for the sampling signal processing, power systems to the RMS voltage, power characteristics of the volume in real-time on-line monitoring; All digital measuring method phase difference; Adaptive technology and the sampling interval, the elimination of non-synchronous sampling of the calculation error using PIC18F458 capture real-time monitoring of power system frequency fluctuations amended sampling interval. The analysis of the measurement error are up to standard. And to provide a friendly man-machine interface.
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Size: 9038 |
Author: 金永州 |
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Description: 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 Integration Algorithm for the sampling signal processing, power systems to the RMS voltage, power characteristics of the volume in real-time on-line monitoring; All digital measuring method phase difference; Adaptive technology and the sampling interval, the elimination of non-synchronous sampling of the calculation error using PIC18F458 capture real-time monitoring of power system frequency fluctuations amended sampling interval. The analysis of the measurement error are up to standard. And to provide a friendly man-machine interface.
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Size: 9216 |
Author: 金永州 |
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Description: 本装置是一个以HT46R71D 为主芯片，配合传感器组成的汽车轮胎气压检测装
置，最终取高三位有效值于LCD 显示，有四种显示单位供切换（Psi、Bar、Kpa、
Kgf/cm2）。本装置仅为参考范例，使用时，为提高准确度，建议多量测些组数
据来构建Sensor Output Voltage - Discharge Time (V-T)表格，并作相应校准。-This device is a HT46R71D-based chips, with sensors detecting vehicle tire pressure devices, and ultimately take the high-three RMS in LCD display, there are four types of display units for switching (Psi, Bar, Kpa, Kgf/cm2). Only reference to an example of the device, when used to improve the accuracy of the proposed多量measured set of data to build more Sensor Output Voltage- Discharge Time (VT) forms, and the corresponding calibration.
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Size: 676864 |
Author: steven |
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Description: 使用AVR单片机设计的单相电表设计程序.不使用专用电表芯片,直接用AVR单片机AD采样交流电压\电流,计算电压\电流有效值和有功功率及有功电度和功率因数.-AVR single-chip design using the single-phase meter design process. Do not use a dedicated chip meter, the direct use of AVR Single Chip AD AC voltage and current sampling, the calculation of voltage and current RMS and active power and active power and power factor.
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Size: 19456 |
Author: qujunsong |
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Description: tubian2.m为对一实际信号做小波多层分解，wokao.m为各层小波分解后的电压有效值，其余为小波模极大程序和一实际电信号的滤波程序-tubian2.m for one to do the actual signal wavelet decomposition of multi-storey, wokao.m for all levels of wavelet decomposition after the RMS voltage, and the rest for the wavelet modulus maxima procedure and the actual one electrical signal filtering process
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Size: 6144 |
Author: leonjoeyq |
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Description: 已知电压信号序列，利用FFT计算该电压信号的各次谐波及其RMS值。-As the voltage signal sequence is known, FFT is used to calculate the value of harmonics and the voltage RMS value.
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Size: 2048 |
Author: Harry |
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Description: 在dsp2704平台上。利用DFT算法计算220V电压有效值。-In dsp2704 platform. DFT algorithm using RMS voltage 220V.
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Size: 26624 |
Author: 赵志堂 |
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Description: 电力系统中根据电压电流计算阻抗，其中使用半周积分算法计算电压电流的有效值-Power system voltage and current calculation based on impedance, in which the use of half integral algorithm of the RMS voltage and current
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Size: 1024 |
Author: DALIN |
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Description: 简易幅频特性测量仪
系统产生10Hz至2KHz的可调正弦波（精度1Hz），输入被测网络，对该网络的幅频特性进行测量（电压有效值，精度1 ）。量程分两档：20mV-2V和2mV-200mV。-Simple amplitude-frequency characteristic measurement system to 2KHz adjustable 10Hz sine wave (the accuracy of 1Hz), enter the test network, the network characteristics of the amplitude-frequency measurements (RMS voltage accuracy 1 ). Sub-two respectively range: 20mV-2V and 2mV-200mV.
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Size: 89088 |
Author: Kelly |
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Description: PWM控制就是脉冲宽度调制。
通过控制电机的电压脉冲宽度，可以改变其电压有效值.从而可以改变它的转速.
图中前部分波形与后部分波形周期是一样的，我们通过调节其占空比（图中tH1不等于tH2）。很明显图中前部分波形的电压有效值大于后部分波形的电压有效值，即前者驱动的电机速度比后者的大。
-PWM is pulse width modulation control. By controlling the electrical voltage pulse width, you can change its RMS voltage. So that we can change the speed. Fig waveform before and after the part of some form is the same cycle, we adjust its duty cycle (figure tH1 does not mean tH2 ). Obviously the first part of the figure of the voltage waveform is greater than the latter part of RMS voltage waveform RMS, that is, the former driver of the motor faster than the latter' s great.
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Size: 62464 |
Author: jerry |
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Description: 对一路工频交流电（频率波动范围为50 ±1Hz、有失真的正弦波）的电压有效值、电流有效值、有功功率、无功功率、功率因数进行测量的数字式多用表。通过LCD12864显示-Frequency of the AC all the way (the frequency of fluctuations in the range of 50 ± 1Hz, there is distortion of the sine wave) RMS voltage, RMS current, active power, reactive power, power factor measurement of the digital multimeter. LCD12864 show through
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Size: 24576 |
Author: yepp_u2 |
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Description: 利用Matlab中的Simulink工具箱仿真。给定三相电源 ，相电压有效值100V。设计一个子系统，利用三相电源给三相全控桥提供一组逻辑触发信号， °（不使用脉冲发生器）。-Using the Simulink toolbox in Matlab simulation. Given three-phase power, RMS voltage of 100V. The design of a subsystem, the use of three-phase power to three-phase full-bridge control logic provides a set of trigger signals, ° (do not use pulse generator).
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Size: 20480 |
Author: 商姣 |
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Description: ＡＤ复用采样交流输入的电压和直流输入的其他需要信号，并提供交流交流滤波函数和有效值计算函数-Multiplexed AD sampling input voltage AC and DC input signals other needs and provides the exchange of the exchange of filtering function and RMS calculation functions
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Size: 3072 |
Author: 邱杏飞 |
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Description: 交流电压有效值测量程序：对交流电的周期采集40个点间隔500us-AC voltage RMS measurement procedures
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Size: 2048 |
Author: 杨东 |
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Description: matlab file rms voltage
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Size: 2048 |
Author: noura |
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Description: upload file rms voltage
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Size: 1024 |
Author: noura |
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Description: 使用AD637的真有效值电压表，作者：QQ 64134703 ，电子毕业设计，欢迎咨询
-Using the AD637 True RMS voltage meter, on: QQ 64134703, e-graduate design, please consult
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Size: 52224 |
Author: 黄永安 |
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Description: 交流电压有效值采样检测程序 avr单片机 含液晶 串口 adc等-AC voltage RMS sampling and testing procedures for avr microcontroller with LCD and other serial adc
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Size: 43008 |
Author: fxy |
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Description: 该数字电压表具有手动和自动测量功能，设计者完成相应的硬件和软件设计。实现技术指标包括：
1可测量工频交流电压
2电压测量精度达5/1000
3电压测量分5档：2.5V、10V、20V、100V、700V
4输入阻抗大于1MΩ。
5显示器可显示测量的有效值。
6有手动和自动按键，自动档量程自动切换
7写出程序流程图及汇编程序。-The digital voltage meter with manual and automatic measurement functions, the designer to complete the appropriate hardware and software design. Achieve technical indicators including: 1 2 measurable voltage frequency AC voltage measurement accuracy of 5/10 003 voltage measurements in 5 files: 2.5V, 10V, 20V, 100V, 700V 4 input impedance greater than 1MΩ. 5 display shows the measured RMS. 6 with manual and automatic button, automatic transmission automatic range switch 7 process flow diagram and assembler to write.
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Size: 174080 |
Author: 庆庆 |
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Description: 实现宽带信号放大，由AD603级联组成增益放大器，实现增益 -20～60dB 范围内可按5dB步进调节或连续可调，且在0～9MHz通频带内增益起伏在1dB以下 互补三极管射级跟随高功率输出在50 负载上最大输出电压有效值Vo≥10V,波形无明显失真 功放输出信号经有效值检波后，通过10位A/D转换芯片TLC1549，将模拟电压的有效值转换成数字信号，并送微控制器实现增益预置与显示。-Broadband signal is amplified by the AD603 gain amplifier cascade components, to achieve the gain range of-20 ~ 60dB 5dB step can be adjusted or continuously adjustable, and in the pass band of 0 ~ 9MHz 1dB gain fluctuations in the following complementary transistor radio level follow the high power output in the 50 load the maximum output voltage RMS Vo ≥ 10V, no significant waveform distortion amplifier output signal by the RMS detector, through 10-bit A/D converter chip TLC1549, will convert the analog voltage RMS digital signal, and sent to the microcontroller and display presets to achieve the gain.
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Size: 2048 |
Author: 夏宝元 |
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