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频率测试
- 利用单片机测频率-frequency measurement using SCM
可以测0--480KHz的C51频率计
- 这个基于C51的频率计可以测0--480KHz的频率,但记住输入的幅度最好在4V以上,否则无法读取信号,好的就顶一下,呵呵
FreqTest.rar
- 使用单片机AT89C51和1602字符液晶实现对信号频率的测试和显示(内含1602液晶显示、频率测试、和测频率的时序原理图,以及整个电路的原理图,外加整个电路的仿真文件),AT89C51 and 1602 the use of single-chip LCD characters realize the test signal frequency and displays (including liquid crystal display 1602, the frequency of testi
monitor
- msp430等精度频率计,测频率,周期及脉冲宽度,并根据按键设置增减计数。-msp430 and other precision frequency meter, measuring frequency, period and pulse width, and set under the key change count.
pinlvji
- LCD1602显示,使用51单片机实现频率计,本软件最高可测频率为460k HZ.-LCD1602 shown that the use of 51 single-chip realization of frequency meter, the software measured maximum frequency of 460k HZ.
fre
- 我做的关于电阻计的程序,原理是根据555将电阻转换成频率,用单片机来测频率-I have done on the resistance of procedures, the principle is based on resistor 555 will be converted into frequency, using single-chip to measure the frequency of
freqm
- 以CPLD器件EPM7128SLC84-15为核心实现的简易数字频率计,采用在一定时间内对数字脉冲计数的方法,可直接测量TTL电平的数字脉冲信号的频率、周期和脉宽。其他一些信号可经过信号预处理电路变换后测量。 量程:1Hz~999999Hz 输入信号:(1)TTL电平数字脉冲信号;(2)方波/正弦波,幅度0.5~5V 显示:七段数码管显示频率(Hz)和周期/脉宽(us) 控制:两个拨码开关切换三种工作模式:测频率,测周期,测脉宽-Frequency Counter realize
frequency_measured_amplitude_phase_measurement
- 2008年北京市大学生电子设计竞赛程序源代码[测频率,测幅值,测相位]。进过竞赛测试性能良好,获奖作品-Beijing 2008 Undergraduate Electronic Design Contest source code [test frequency, measured amplitude, phase measurement]. Progressive had a good race to test the performance, winning entries
pinlvjifangzhen
- 可以测频率周期及占空比,8位数码管显示C语言程序-Can detect the frequency and duty cycle, 8-bit digital tube display C Language Program
jianxiang
- 等精度测频率、测相位 用c语言编程 简单方便 -Accuracy of measurement, such as frequency, measured phase with c language programming is simple and convenient
A
- 用AVR单片机编写的汽车测速程序,其中包含了仿真图形,已经调试通过。这是我的毕业设计。希望给大家做个参考吧,采用1602显示,可以精确到小数点后6位,这个程序也可以改为测转速或者测频率。-Prepared using single-chip automotive AVR velocimetry procedures, including graphics simulation, debugging has been through. This is my graduation project.
xinhao111
- 能够产生正弦波、方波、三角波。同时还可以作为频率计测频率。函数信号的产生由MAX038和外围电路完成,能产生1Hz—20MHz的波形。波形选择由单片机完成。输出或输入频率经74HC390分频后,由单片机完成自动频率检测显示-Capable of producing sine, square, triangle wave. At the same time can also be measured as a frequency meter frequency. Function signal ge
pinglvjiFPGA
- 基于等精度原理的频率计verlog代码,被测频率在1HZ到10MHZ误差百分比相同。-Based on the principle of the frequency of such precision code
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- 数字频率计的原理和实现,测频率和周期及减小测量误差的方法-Digital frequency meter and the realization of the principle, test cycles and reduce the frequency and method of measurement error
frequency-measured-under-mega16
- AVR mega16下的频率采集,高低频自动切换;所能测准的最高频率为70KHz-frequency sampling under AVR mega16,auto switching between high and low frequency the highest frequency which can be measured is 70KHz.
VHDL测频率周期
- 用VHDL语言编写的频率计程序,用来测量方波的频率以及周期。
使用STM32测量频率和占空比的几种方法
- 使用单片机STM32L测频率和占空比的方法,实测可用(Using singlechip STM32l to measure frequency and duty cycle)
输入捕获测频率和占空比
- STM32测量频率和占空比,可调节测量范围(STM32 measurement of frequency and duty cycle)
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。
上位机查询模式
- 使用stm32F103测频率的keil c源程序(STM32 frequency measurement)