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ll
- 电子计数器测频有两种方式：一是直接测频法，即在一定闸门时间内测量被测信号的脉冲个数；二是间接测频法，如周期测频法。直接测频法适用于高频信号的频率测量，间接测频法适用于低频信号的频率测量。本文阐述了用数字电路设计了一个简单的数字频率计的过程。-Electronic counter measuring frequency in two ways: one is the direct frequency measurement method, that is, in a certain gate ti
1xy7z.ZIP
- 基于小波变换和三点法的基波频率测量Based on the wavelet transform and the method of three points of the fundamental wave frequency measurement-Based on the wavelet transform and the method of three points of the fundamental wave frequency measurement
pinlv
- MSP430F449实现频率测量，呼吸灯，自己写的，调试OK-MSP430F449 realize frequency measurements, breathing lamp, write their own, debugging OK
shuzipinlvji
- 8位十六进制频率计设计 根据频率的定义和频率测量的基本原理可以测量方波、三角波、正弦波；测量范围10Hz～10MHz，测量分辨率1Hz，测量误差1 Hz-8 hexadecimal Frequency Meter 1 Hz square wave, triangle wave, sine wave can be measured measuring range 10Hz to 10MHz, measurement resolution 1Hz, measurement error accord
test2
- 频率测量 单片机测频汇编程序，以89C51为例，0--255Hz ，T0口输入信号。-Frequency measurement The single-chip frequency measurement assembler to 89C51, for example, 0- 255Hz, the T0 port input signal.
fpga
- 利用超高速硬件描述语言(VHDL)在现场可编程逻辑门阵列(FPGA)上编程实现的纯数字式等精度频率计，不但具有较高的测量精度，而且其测量精度不会随着被测信号频率的降低而下降。为了实现对任意信号进行频率测量，在前端输入加整形电路即可。-The cymoneter that be implemented with using the VHDL (Very High Speed Integrated Hardware Descr iption Language) to program into the
mccly
- 脉冲频率测量仪器的设计的源代码，并且可以自动切换量程显示。测量范围可以从10-10MHZ。-Pulse frequency measuring instruments designed source code, and can automatically switch range displayed. Measuring range from 10-10MHZ.
10k-40k
- 51单片机频率测量程序，用LED显示，频率10Khz-40Khz精度高-51 single-chip frequency measurement procedures, LED display, the frequency of 10Khz-40Khz high precision
frequency_timerA
- 基于ＭＳＰ４３０单片机的频率测量，用三个１６４分别控制三个数码管，实现串行显示-MSP430 microcontroller-based frequency measurement with three 164 control three digital tube serial display
frequency_timerA
- 基于timerA，采用计数法完成数字信号频率测量，使用片内时钟DCO时钟频率为默认值，获得金近似1s的时间闸门，即调整delay循环次数实现-Based on timerA, USES the count method is used to complete the digital signal frequency measurements, use the clock DCO within the clock frequency for default, obtain approximate
pinlvji
- 1．基本要求 （1）频率测量 测量范围:1HZ~1MHZ,信号为方波等 （2）周期测量 测量范围:1HZ~1MHZ,信号为方波等 （3）具有显示功能。 -A. Basic requirements (1) the frequency of measurement Measuring range: 1HZ ~ 1MHZ, the signal is a square wave, etc. (2) The cycle of measurement Measuring ra
ssji
- 1．基本要求 （1）频率测量 测量范围:1HZ~1MHZ,信号为方波等 （2）周期测量 测量范围:1HZ~1MHZ,信号为方波等 （3）具有显示功能。 -A. Basic requirements (1) the frequency of measurement Measuring range: 1HZ ~ 1MHZ, the signal is a square wave, etc. (2) The cycle of measurement Measuring ra
ssaszhaohengji
- 1．基本要求 （1）频率测量 测量范围:1HZ~1MHZ,信号为方波等 （2）周期测量 测量范围:1HZ~1MHZ,信号为方波等 （3）具有显示功能。 -A. Basic requirements (1) the frequency of measurement Measuring range: 1HZ ~ 1MHZ, the signal is a square wave, etc. (2) The cycle of measurement Measuring ra
EDAshuzipinlvji
- 1）能够测量正弦波、三角波、锯齿波、矩形波等周期性信号的频率； 2）能直接用十进制数字显示测得的频率； 3）频率测量范围：1HZ~10KHZ切量程能自动切换； 4）输入信号幅度范围为0.5~5V，要求一起自动适应； 5）测量时间：T〈=1.5S；6）用CPLD/FPGA可编程逻辑器件实现 -1) capable of measuring the frequency of the sine wave, triangle wave, sawtooth wave, rectangular wave p
Aduc841
- AD公司 Aduc841系列单片机实验例程，包括AD转换，pwm生成，DA转换，串口通信，温度测量，频率测量等等。-AD company Aduc841 series single-chip experiment routines, including, pwm generation AD converter, DA converter, serial communication, temperature measurement, frequency measurement, and so on
voltage-and-frequency-measurement
- 《avr单片机C语言程序设计实例精粹》中市电电压频率测量设计实例源文件-Avr microcontroller C language programming instance of the essence " in the mains voltage and frequency measurement design example source file
shi
- 可以对外部输入波形进行频率测量，本方法简单实用-External input waveform frequency measurements, this method is simple and practical
ftad
- 基于msp430f149的频率测量和ad采样功能功能的实现，用于信号合成题目，如将三个正弦波合成一个方波，测量频率，电压，其他功能通过硬件完成，如通过硬件测出频率的电压，通过ad来测波形的电压-Based msp430f149 frequency measurement and ad sampling function function for the signal synthesis topics, such as the three sine wave synthesis of a squa
MeasureFrequency
- 基于MSP430G2553的频率测量 测频法实现-MSP430G2553- based frequency measurement Frequency Measurement Method
digital-radar
- 针对传统液位测量系统精度低、抗干扰能力差、接触式的特点,介绍一种利用雷达原理研制的数字式液位测量系统。本系统采用调频测量法,用C8051F020单片机作为频率测量模块的核心。运用自相关函数对信号进行滤波 快速傅里叶变换(FFT)算法进行频域分析 移频法对频率进行细化,最后得到液位的高度。该系统具有很强的适应能力和完善的接口,在实测中取得了满意的精度。 -Traditional level measurement system accuracy, anti-jamming capability,