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低频数字式相位测量仪
- 低频数字式相位测量仪； 此系统由相位测量仪、数字式移相信号发生器和移相网络三部分组成。为使系统更加稳定，使系统整体精度得以保障，本电路两块T89C52为核心控制器件分别控制相位测量、数字式移相信号发生,在数字式移相信号发生部分采用了锁相技术、CPLD等技术, 使输出波形精度大大提高，并可对频率自动校验，提高频率稳定性。-low-frequency digital phase-measuring instrument; This system consists of phase-measuri
csbv20
- 1.1 功能简介 三种测距模式选择跳线J1（短距、中距、可调距）： 短距：20cm~100cm左右（根据被测物表面材料决定），精度1cm； 中距：70cm~400cm左右（根据被测物表面材料决定）； 可调：范围由可调节参数确定，当调节在合适的值时，最远测距700cm左右； 1.2 应用领域 超声波测距模组是为方便学生进行单片机接口方面的学习专门设计的模块，它可以方便的和61板连接，可应用在小距离测距、机器人检测、障碍物检测等方面，可用于车辆倒车雷达以及家居安防系统等应用方
PINGLIE
- 等精度数字频率计的实现等精度数字频率计的实现-Such as precision digital frequency meter to achieve such precision digital frequency meter to achieve
Q11_SOPC_Freq_Avalon
- FPGA平台下基于Nios II的数字频率计，测频模块采用verilogHDL编写，等精度算法，Avalon总线封装，Nios II读取最终的频率数值，显示在LCD12864上。-The Nios digital frequency meter based on II FPGA platform, the frequency measurement module written by verilogHDL, such as the accuracy of algorithm, Avalon bu
frequency-measuring-VHDL
- 采用等精度测频原理的频率计程序与仿真，本文为DOC文档，附有源码和仿真波形-Equal precision frequency measuring principle of frequency meter program and simulation, this paper for the DOC document, attached to the source code and simulation waveform
frequency-indicator
- 基于51单片机的频率计，用测周法和测频法，可以实现等精度测频-Based on 51 single-precision measurement of frequency, using the measurement method and frequency measurement method week, you can achieve equal frequency
123
- 1、 等精度数字频率/相位测试仪是电子通信电路测试设计常需要的一种工具。设计的指标包括，测量频率的范围：（0.1Hz-100MHz），测量精度：測频全域不大于百万分之一。具有脉宽测试功能，相位测试功能。系统的组成框图如下所示，TCLK为待测的信号，BCLK为系统的时钟。其主控制结构如图測频原理所示，采用高速的系统时钟BCLK对待测信号时钟TCLK进行计数，然后计算出一个周期的平均值，最后输出高8位数据。-1, and other precision digital frequency/phase
frequency-measure
- 用430单片机测量频率，等精度法。用两个定时器，实现高精度测量。-MCU with 430 measurement frequency, and other precision method. With two timers, high precision measurements.
rest
- 基于FPGA的频率及设计，采用等精度测量法。实现频率测量-Frequency and FPGA-based designs, such as the use of precision measurement. Frequency Measurement
acounter
- 利用VHDL语言设计的等精度数字频率计，有各个模块的详细设计语言，已调试成功。-The use of VHDL language design digital frequency meter, a detailed design language of each module has been successful debugging.
freqency_meter
- 等精度原理数字频率计。cpld或fpga文件，和单片机.c文件。-digital frequency meter
Cymometer
- 用FPGA设计的等精度测量频率。频率的测量范围为1Hz-100MHz。可以测占空比，测时间间隔等。可测正弦波和方波。精度大于10e（-4）-Using FPGA to design the equal precision frequency measurement.Frequency of the measuring range is 1 hz- 100 MHZ.Can examine duty ratio, time interval measurement, etc.Sine wave an
microcomputer-frequency-meter
- 单片机频率计,等精度测量，能测1HZ到1MHZ，用C语言编写-Single chip microcomputer frequency meter, and other precision measuring, can measure 1 hz to 1 MHZ, written in C language
plj1
- 频率计的设计，等精度设计，非常实用，欢迎下载-Frequency meter design, and other precision design, very practical, welcome to download
Frequency-meter-program-source-code
- 基于FPGA实现的采用等精度测频原理的频率计程序源码与仿真-Frequency meter program source code and simulation based on the use and other precision frequency measurement principle of FPGA implementation
pinlvji-design-VHDL
- 使用Altera公司的EP2C35系列的FPGA芯片，利用SOPC-NIOSII-EP2C35开发板设计和仿真一个数字频率计，对1Hz~250KHz 的脉冲进行频率测量，采用等精度测量，即在所测量的整个频段内部，均可实现相同精度的测量，测量精度与频率无关，结果在数码管上显示-The use of Altera EP2C35 series FPGA chip using the SOPC-NIOSII-EP2C35 board design and simulation of a digital
FrequenceCalculation
- 利用51的外部中断和内部计数实现信号频率的等精度测量，测量范围10H在~1M，误差经过修正可以在0.1 以下。-External interrupts and 51 internal count signal frequency to achieve equal precision measurements in the measuring range 10H ~ 1M, the error can be corrected at 0.1 .
201604plj
- 利用FPGA测试信号的频率，利用内部高速计数器和等精度测量方法，实现对外部信号的精确测频。测量范围10Hz~100M。-FPGA using the frequency of the test signal, and using the internal high-speed counters and other precision measurement method for accurate measurement of the frequency of the external signa
fredeng
- 用verilg语言实现等精度测量频率，最大可测100m。(Implementation of equal precision frequency measurement with verilg language)
second
- 等精度测试，待测频率超过100就停止产生脉冲(Such as precision testing, more than 100 stopped produce pulse frequency under test)