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FPGA实现等精度的频率和脉宽测量
- FPGA实现等精度的频率和脉宽测量,使用次源码的作品获得2008年TI杯湖北省电子设计大赛一等奖,FPGA to achieve such accuracy the frequency and pulse width measurement, the use of sub-source works TI Cup 2008 Electronic Design Competition first prize in Hubei Province
cpld11245
- 主要介绍了等精度频率测量原理,该原理具有在整个测试频段内保持高精度频率 测量的优点 同时在该原理基础上,采用了Verilog HDL语言设计了高速的等精度测频 模块,并且利用EDA开发平台QUARTUS11 3 .0对CPLD芯片进行写人,实现了计数等 主要逻辑功能 还使用C语言设计了该等精度频率计的主控程序以提高测量精度。本设 计实现了对频率变化范围较大的信号进行频率测量,能够满足高速度、高精度的测频要 求。-Introduced, such as the accuracy
M16_F_COUNT
- 10K到5MHz的频率测量,误差在0.05 之内。用ATmega16实现-10K to 5MHz frequency measurement error of 0.05 . Implementation with ATmega16
SHUZIPINLVJI
- 设计一个4位的十进制数字式频率计测量范围为10MHz。量程分别为10kHz、100kHz、1MHz和10MHz四档。量程自动转换规则是:读数大于9999时,频率计处于超量程状态,此时显示器发出溢出指示(最高位显示F,其余各位不显示数字),下一次测量时,量程自动增大一档-Design a 4-bit decimal digital frequency meter measuring range is 10MHz. Range respectively, 10kHz, 100kHz, 1MHz an
frequencymeter
- 测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速,以及便于实现测量过程自动化等优点,是频率测量的重要手段之一。-Measuring the frequency of means, including electronic counter to measure frequencies with high precision, easy to use, fast measurement and easy to realize the advantages of automa
boxingcaiji
- 波形采集系统 用于简单波形峰峰值采集和频率测量 带回放功能-failed to translate
Measured_F_P
- 等精度频率测量,与单片机通信,计算并显示-Other precision frequency measurement, communication with the microcontroller calculates and displays
shuzipinlvji
- 1.用VHDL完成12位十进制数字频率计的设计及仿真。 2.频率测量范围:1Hz~10KHz,分成两个频段,即1~999Hz,1KHz~10KHz,用三位数码管显示测量频率,用LED显示表示单位,如亮绿灯表示Hz,亮红灯表示KHz。 3.具有自动校验和测量两种功能,即能用标准时钟校验、测量精度。 4.具有超量程报警功能,在超出目前量程档的测量范围时,发出灯光和音响信号。 -1 completed 12 with VHDL design and simulation of d
STM32测频
- ADC采集及编程,可以很好的测量电压和频率什么的。很好用,(ADC acquisition and programming, you can very good measurement of voltage and frequency. It's very easy to use.)
基于stm32f103开发板的频率计
- 基于stm32f103开发板 测量方波(pwm)的频率 频率范围 (1-50k为佳)(Based on the STM32F103 development board, the frequency (frequency range) of Fang Bo (PWM) is measured (1-50k is better))
Simple frequency meter2.2
- 简易数字频率计采用了测频和测周法实现频率的测量(Simple frequency meter)
等精度数字频率计
- 可以测量1HZ-150MHZ矩形波(其他波形需整形后输入)信号,误差<0.01%,串口输出NC和NX值。(1HZ-150MHZ square wave can be measured (other waveform needs to be shaped after the input) signal, error <0.01%, serial output NC and NX values.)
频率计
- 测量频率,有三个量程,自动调节,可以在OLED显示屏上显示结果。(The measuring frequency is automatically adjusted by three measuring ranges.)
频率计与占空比
- 51单片机对10Hz~100KHz的正弦波进行频率与占空比的测量,并通过1602显示出来(51 SCM 10Hz~100KHz sinusoidal frequency and duty cycle measurement, and show through 1602)
频率测试程序
- 测量频率,精度很高,可以测量高频,STM程序,调试成功了。很好用的(Frequency measurement, high accuracy, you can measure high frequency, STM procedures, debugging success. It works well)
测量频率
- 功能:测量两路输入的频率,并在液晶上显示。 有两种方法测频率,一种是周期测频法,一种是频率计数法: 周期测频法要求有参考时钟,通过对一个或者几个周期信号内参考时钟的计数来测量; 频率计数法就是单位时间内测出被测信号的改变次数,从而得到频率。 第一种方法的精度与参考时钟的速度有关,速度越快精度越高,第二种的精度跟所取的单位时间有关,时间越长,精度越高。所以前者适合测低频,后者适合测高频。 所以要想测量准确就得看你所测信号的频率范围了。 你也可以结合这两者的优势,实现互补。
电容测量
- 用NE555和被测电容构成双稳态触发器,单片机检测触发器的脉冲频率,算出电容值。还有量程自动切换功能(The bistable trigger is composed of NE555 and measured capacitance. The pulse frequency of trigger is detected by single chip microcomputer, and the capacitance value is calculated. And the automatic
chengxu
- 实现函数信号频率的测量与显示,用四位共阳极数码管,基于单片机89C51(Measurement and display of signal frequency)
周期
- 本程序是用STM32F103芯片进行开发的,实现对方波信号的频率测量,并显示在12864液晶屏上(This program is developed with STM32F103 chip, and the frequency measurement of the signal of the other side is realized, and it is displayed on the 12864 LCD screen.)
频率计
- STM32F4 使用等精度测量法测量频率(STM32F4 Measures Frequency with Equal Precision Method)