Description: 本程序为VHDL编写的频率计，测频范围从0.1Hz到1G-VHDL procedures for the preparation of the frequency meter, measuring frequency range from 0.1Hz to 1G Platform: |
Size: 7586 |
Author:tmx |
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Description: 频率计的VHDL实现，使用10K20，包括顶层电路图，测频范围：1Hz--10MHz-frequency of VHDL, use 10K20, including top-level circuit, measuring frequency range : 1Hz -- 10MHz Platform: |
Size: 20426 |
Author:k |
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Description: 本VHDL源代码由顶层模块、测频模块、驱动模块、计算模块、LCD显示模块、复位模块组成，能精确检测从1--100M频率，误差极小且恒定。-the VHDL source code from the top module, measuring frequency module, driver modules, modules, LCD display module, reduction modules, can be used to accurately detect from 1 -- 100M frequency, constant and very small errors. Platform: |
Size: 481224 |
Author:刘刚 |
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Description: 本程序实现测量工频频率、功率因数、有功功率、无功功率、电压、电流等功能-the procedures for measuring frequency, power factor, active power, reactive power, voltage, current and other functions Platform: |
Size: 4327 |
Author:wujianrong |
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Description: A digital fi‘equeney meter designed with FPGA development software Q-~us 11 is introduced．The 1 Hz—l MHz input measured pulse signals of the digital ii‘equency meter can be used for measuring frequency，period，pulse width and duty ratio，etc．The test results stably display O71 3 seven—segment numeric tubes，and the measuring ranges may be switched over automatically．The measuring error is equal to or less than 0．1％． Platform: |
Size: 192493 |
Author:胥海勇 |
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Description: 设计一数字 频率计，其技术要求如下： (1) 测量频率范围：1Hz~100kHz。 (2) 准确度Dfx/fx£ ± 2%。 (3) 测量信号：方波，峰峰值为3V~5V。-design a figure frequency meter, the technical requirements are as follows : (a) measuring frequency range : 1Hz - 100kHz. (2) the accuracy Dfx / fxpound 2%. (3) Measurement of signal : square wave peak to peak for 3V to 5V. Platform: |
Size: 86191 |
Author:兰 |
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Description: 设计一数字 频率计，其技术要求如下： (1) 测量频率范围：1Hz~100kHz。 (2) 准确度Dfx/fx£ ± 2%。 (3) 测量信号：方波，峰峰值为3V~5V。-design a figure frequency meter, the technical requirements are as follows : (a) measuring frequency range : 1Hz- 100kHz. (2) the accuracy Dfx/fxpound 2%. (3) Measurement of signal : square wave peak to peak for 3V to 5V. Platform: |
Size: 86016 |
Author:兰 |
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Description: 本程序为VHDL编写的频率计，测频范围从0.1Hz到1G-VHDL procedures for the preparation of the frequency meter, measuring frequency range from 0.1Hz to 1G Platform: |
Size: 7168 |
Author:tmx |
Hits:
Description: 本VHDL源代码由顶层模块、测频模块、驱动模块、计算模块、LCD显示模块、复位模块组成，能精确检测从1--100M频率，误差极小且恒定。-the VHDL source code from the top module, measuring frequency module, driver modules, modules, LCD display module, reduction modules, can be used to accurately detect from 1-- 100M frequency, constant and very small errors. Platform: |
Size: 481280 |
Author:刘刚 |
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Description: 本程序实现测量工频频率、功率因数、有功功率、无功功率、电压、电流等功能-the procedures for measuring frequency, power factor, active power, reactive power, voltage, current and other functions Platform: |
Size: 4096 |
Author:wujianrong |
Hits:
Description: A digital fi‘equeney meter designed with FPGA development software Q-~us 11 is introduced．The 1 Hz—l MHz input measured pulse signals of the digital ii‘equency meter can be used for measuring frequency，period，pulse width and duty ratio，etc．The test results stably display O71 3 seven—segment numeric tubes，and the measuring ranges may be switched over automatically．The measuring error is equal to or less than 0．1％． -A digital fi equeney meter designed with FPGA development software Q-~ us 11 is introduced. The 1 Hz-l MHz input measured pulse signals of the digital ii equency meter can be used for measuring frequency, period, pulse width and duty ratio, etc. The test results stably display O71 3 seven-segment numeric tubes, and the measuring ranges may be switched over automatically. The measuring error is equal to or less than 0.1. Platform: |
Size: 192512 |
Author: |
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Description: 本文用VHDL在CPLD器件上实现一种8 b数字频率计测频系统，能够用十进制数码显示被测信号的频率，不仅能够测量正弦波、方波和三角波等信号的频率，而且还能对其他多种物理量进行测量。具有体积小、可靠性高、功耗低的特点。-In this paper, VHDL in the CPLD device to achieve a 8 b digital frequency meter measuring frequency system that used the decimal digital display of measured signals in the frequency, not only to measure sine wave, square wave and triangular wave signals such as frequency, but also to other a variety of physical measurements. Small size, high reliability, low power consumption characteristics. Platform: |
Size: 224256 |
Author:xiaoju |
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Description: This digital oscilloscope takes a MCU and FPGA as the core. We made emphases on the choice of the sampling methods and the implement of equivalent sampling as a result, our design not only has the real-time sampling mode but also can reach the highest equivalent sample rate of 200 MHz using the real-time sample rate of 1 MHz, by way of random equivalent sampling. At the same time, this system has many other functions, such as 2 mV small-signal measuring, storage and re-display of waveform, measuring frequency, selective trigger edge, output of the correction signal and so on.-This digital oscilloscope takes a MCU and FPGA as the core. We made emphases on the choice of the sampling methods and the implement of equivalent sampling as a result, our design not only has the real-time sampling mode but also can reach the highest equivalent sample rate of 200 MHz using the real-time sample rate of 1 MHz, by way of random equivalent sampling. At the same time, this system has many other functions, such as 2 mV small-signal measuring, storage and re-display of waveform, measuring frequency, selective trigger edge, output of the correction signal and so on. Platform: |
Size: 2180096 |
Author:荣超群 |
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Description: 等精度频率计，测频范围为1~50MHZ，可测脉宽-Main measurement frequency, pulse width equal precision frequency meter.Measuring frequency range is between 1hz Platform: |
Size: 299008 |
Author:叶洋 |
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Description: 本系统基于C8051F020实现等精度的频率测量，利用该单片机灵活的控制功能及速
度优势，大大提高了性能和测量精度。以往的测频都是采用高频段直接计数、低频段间接测周
的方法，其测量精度往往会随着被测频率的改变而受到影响。为了克服测频中高低频段测量精
度不等的缺陷，采用双计数器设计，实现等精度的频率测量。等精度的测量方法不但具有较高
的测量精度，而且在整个测频区域内保持恒定的测量精度。-The system is based on C8051F020 achieve equal precision frequency measurement, the use of the flexible single-chip control functions and speed advantage, greatly improving the performance and measurement accuracy. Previous measurements are made of high-frequency band direct counting method week low frequency indirect measurement, the measurement accuracy is often measured as the change in the frequency of the affected. To overcome the high and low band frequency measurement accuracy ranging from defects, dual counter design, implementation, and other precision frequency measurements. Such as the accuracy of the measurement method not only has high accuracy, and maintain a constant accuracy over the entire measuring frequency region. Platform: |
Size: 86016 |
Author:汪志 |
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