等精度测频原理的频率计程序与仿真。。希望大家能用的到撒///-such precision frequency measurement principles of Cymometer procedures and simulation. . Hope everyone can withdraw to the / / / 下载
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数字示波器上的测频电路原理图，已经经过验证可行。- 下载
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智能单片机频率计的原理与设计 频率测量仪器在生产和科研的各个部门使，也是某些大型系统的重要组成部分；利用单片机的定时功能设计的信号频率测量仪，可单独使用，也可方便嵌人系统中．介绍了该频率测量仪的测量原理、硬件结构和软件设计等。-intelligent frequency of SCM principles and design frequency measurement equipment in the production and research so that the various departments, as well as certain large-scale systems of the important components; SCM functional design of the timing of the signal frequency measurement instrument, can be used alone, but also facilitate the embedding system. On the frequency meter measuring principle, hardware architecture and software design. 下载
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RTP视频测试，主要测试rtp 的流控原理和分析rtp 协议。-RTP Video test, the test rtp flow control theory and analysis rtp agreement. 下载
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FPGA很有价值的27实例.rar 包括 LED控制VHDL程序与仿真 2004.8修改.doc； LED控制VHDL程序与仿真； LCD控制VHDL程序与仿真 2004.8修改； LCD控制VHDL程序与仿真； ADC0809 VHDL控制程序； TLC5510 VHDL控制程序； DAC0832 接口电路程序； TLC7524接口电路程序； URAT VHDL程序与仿真； ASK调制与解调VHDL程序及仿真； FSK调制与解调VHDL程序及仿真； PSK调制与解调VHDL程序及仿真； MASK调制VHDL程序及仿真； MFSK调制VHDL程序及仿真； MPSK调制与解调VHDL程序与仿真； 基带码发生器程序设计与仿真； 频率计程序设计与仿真； 采用等精度测频原理的频率计程序与仿真； 电子琴程序设计与仿真 2004.8修改； 电子琴程序设计与仿真； 电梯控制器程序设计与仿真； 电子时钟VHDL程序与仿真； 自动售货机VHDL程序与仿真； 出租车计价器VHDL程序与仿真 2004.8修改； 出租车计价器VHDL程序与仿真； 波形发生程序； 步进电机定位控制系统VHDL程序与仿-FPGA value of the 27 examples. Rar including LED control procedures and VHDL simulation 200 4.8 amendments. doc; LED control procedures and VHDL simulation; LCD control procedures and VHDL simulation 2004.8 modified; LCD control procedures and VHDL simulation; Connection between ADC 0809 VHDL control procedures; TLC5510 VHDL control procedures; DAC0832 interface circuits; TLC7524 interface circuits; URAT procedures and VHDL simulation; ASK modulation and demodulation process and VHDL simulation; FSK modulation and demodulation process and VHDL simulation; PSK modulation and demodulation process and VHDL simulation; MASK modulation procedures and VHDL simulation; MFSK modulation procedures and VHDL simulation; MPSK modulation and demodulation process and VHDL simulation; Base-band code gene 下载
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本文首先介绍了视频处理的一般原理，主要介绍了采样，变换编码，预测编码，量化，熵编码等。然后介绍了最新的视频标准MPEG主要介绍了系统体系结构，系统解码器模型，缓冲区模型规范，对象描述框架，以及场景描述和视频部分。接着介绍了DSP，介绍了它的特点，主要应用，CPU结构，- 下载
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呼吸传感器应用技术的关键是采集呼吸的信号并准确地在计算机中显示出来。本文就从呼吸传感器的原理出发，对测量系统中的各个部分分别介绍；论文的前两部分从温度的标定和温度传感器材料的选取，提出了把铂作为材料的根据；论文的中间部分分析了计算机接口和总括的测量系统，并对采集到的信号进行了分析；论文的最后从人机工程学的角度考虑了呼吸传感器的应用。 全文以温度传感器为主线，介绍了利用温度传感器测量呼吸频率的原理，并对实验得到的数据进行了分析。-respiratory sensor applications, the key is to breathe the signal acquisition and accurately on computer displayed. This paper from the respiratory sensor based on the principles of the measurement system were introduced in various parts; The first two papers from a temperature sensor calibration and temperature materials selection, put forward the platinum material as the basis; The paper analyzes the middle part of the computer interface and the whole system of measurement, and Acquisition of the signal analysis; the final papers from the ergonomics point of view of the respiratory sensor applications. The full text of the temperature sensor to the main line, introduced to the use of temperature sensors measure respiratory frequency theory, the experimental data were analyzed. 下载
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电机温升测试系统,适用于工作频率为50/60Hz的单/三相小功率异步电机（≤5KW）、串级电机、电动工具的绕组温升测量。适用于工作频率为50/60Hz的电源变压器、充电器、电感镇流器的绕组温升测量。带电原理：在带电工作情况下测量绕组的直流电阻，并用公式折算成温升。专为电动工具定子，转子温升测量而开发，其中定子采用带电法，转子采用断电法-motor temperature test system is applicable to the frequency of 50/60Hz single / three-phase asynchronous motors power the small ( 5KW), Cascade motor, electric tools winding temperature measurement. Applicable to the frequency of 50/60 Hz power transformers, chargers, the inductance ballasts winding temperature measurement. Charged Principle : Live in work measurement of the winding resistance DC, and the formulas used converted into temperature. Electric tools for the stator and rotor temperature measurement and development, which use charged stator, rotor features a power law 下载
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基于MC145159的PLL频率合成器设计与实现 介绍了锁相环路频率合成器的基本原理,分析了集成锁相环芯片M C 145159的工作特性,给出了集成锁相环芯片M C 145159的一个应用实例,为高频频率合成器的设计提供了一个较好的思路.测试结果证明了设计的合理性与实用性,系统频率稳定度优于10-7.-MC145159 PLL frequency synthesizer design and realization of PLL frequency synthesizer the basic principles of integrated PLL chip M C 145159 work characteristics, Integration is the PLL chip M C 145159 example of an application, for High Frequency Synthesizer Design provided a good idea. The test results proved the rationality of design and practicality. the system frequency stability is better than 10 -7. 下载
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1 学习在CVI环境里面使用非NI数据采集卡。 2 学习用过零法计算被测每个周期采样点数。 3 学习数据采集卡采样间隔的测定。 4 学习计算被测信号的频率和周期。 5 熟悉FFT算法原理。 , 下载
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