以89S52单片机和EP1C6Q240C8型FPGA为控制核心的多功能计数器,是由峰值检波、A/D转换、程控放大、比较整形、移相网络部分组成,可实现测量正弦信号的频率、周期和相位差的功能。多功能计数器采用等精度的测量方法,可实现频率为1Hz~10MHz、幅度为0.01~5Vrms的正弦信号的精确测频,以及频率为10Hz~100kHz、幅度为0.5~5Vrms的正弦信号精确测相。液晶显示器能够实时显示当前信号的频率、周期和相位差。该多功能计数器精度高,界面友好,实用性强。 Abstract: A multi-function counter,which uses89S52MCU and EP1C6Q240C8FPGA as a control core,consists of peak detector,A/D conversion,program-controlled amplification,compared shaping and phase-shifting network part.The counter measures the frequency,period and phase of sinusoidal signal.With the equal precision method,the multi-function counter achieves the precise frequency measurement of the sinusoidal signal which its frequency is from1Hz to10MHz,its amplitude is from0.01Vrms to5Vrms,as well as the accurate phase measurement of the sinusoidal signal which its frequency is from10Hz to100kHz,its amplitude is from0.5Vrms to5Vrms.The LCD monitor real-time displays the frequency,period and phase difference of current signal.The multi-function counter features high precision,friendly interface,and strong practical.
上传时间: 2013-11-15
上传用户:gy592333
介绍了一种基于C8051F020单片机的多路压力测量仪。该测量仪选用电阻应变式压力传感器采集压力信号,并经放大电路处理后送入C8051F020单片机,再由C8051F020单片机内部的A/D转换器将采集到的压力信号进行模数转化,然后分别对数据进行存储和显示。该测量仪能测量6路压力信号,并且各测量点都能单独检测和设置。由于采用了C8051F020单片机,简化了硬件电路,增强了抗干扰能力,使得测量仪具有测量精度高,冲击小等特点。 Abstract: A measurement apparatus for multi-channel pressure based on single chip microcomputer is introduced.It can measure 6 channels signal of the pressure,and the pressure measure points can be detection and located individually.The pressure signal sampling is obtained by resistor stress-type pressure sensors,the digital signals of 6 channels are collected through amplifying and adjustment circuit of pressure signals and internal integrated A/D converter of MCU.Finally,and it realizes the function to store and display data separately.C8051F020 was used to made hardware circuit simple,and it also enhanced the anti-interference ability.It features high precision and little impact.
上传时间: 2013-11-16
上传用户:yare
量测/测试所面临之问题 此测试验证上,要使用NI公司之LAB VIEW及DAQ CARD来取代AUDIO PRECISION及其所附软体ATS。首先需克服硬体解析度上的差异,再来是FFT(FAST FOURIER TRANSFORM,快速传立业转换)演算未予的撰写,这将会影响MULTI-TONE讯号上PEAK值的侦测。另外,以RS-232为I/O介面,并呼叫客户所提供之DLL档来与DUT内的IC沟通,但因LAB VIEW无法直接呼叫其STRUCTURE,故需用VC++再编译一层新的DLL来供LAB VIEW使用。
上传时间: 2013-12-13
上传用户:longlong12345678
介绍一种应用于长城赛弗SUV汽车后门车窗多功能控制器,能实现对电动玻璃车窗、车窗雨刮器、喷水器以及电加热除霜器等控制。介绍了基于NXP P89LPC922单片机多功能汽车后车窗控制器的控制功能、硬件电路原理和软件设计方法。 Abstract: This paper presents a multipurpose automotive rear windows controller for CHANGCHENG SAFE SUV.The controller can control rear power-operated window,rear wiping,washing water pump and rear defroster of the windows. In this paper, it is introduced in detail that the functions and the design of the circuit and program of the controller based on NXP P89LPC922 MCU.
上传时间: 2013-11-13
上传用户:z754970244
针对当前安检力学试验机所能完成的试验种类单一、自动化程度低等问题,提出一种以ATmega128单片机为核心控制器的安检力学试验机的设计。详细阐述了该安检力学试验机各个组成部分的设计原理和方案,并且给出了各部分的软件设计思想和操作流程。经过大量测试试验表明:设计的安检力学试验机可以完成多达十余种的力学安检试验,完全符合相关国家标准,并且具有数据采集精度高、传输速度快、操作安全简便等特点,实现了安检设备的多功能化、数字化和自动化。 Abstract: Currently, many mechanical security testing machines have only one function. The degree of automation of them is low. To solve those problems, a new kind of mechanical security testing machine, using ATmega128 micro-controller as its core controller, has been advanced. It describes the components of the machine. The principles and the scheme in the designing processes are presented in detail, and the software architecture and the operation processes of each part are given. After having done many testing, we have reached the following conclusions: the mechanical security testing machine presented can do over ten mechanical security tests complying with related national standards. It has high data acquisition accuracy and high transmission speed. The operation of the machine is simple and safe. In general, this machine is a multi-functional, highly automatic, digitalized security testing device.
上传时间: 2013-11-05
上传用户:a67818601
keil c51 v9.01此版不是汉化中文版,是英文版来的。ARM发布Keil μVision4集成开发环境(IDE),用来在微控制器和智能卡设备上创建、仿真和调试嵌入式应用。 μVision4 IDE是为增强开发人员的工作效率设计的,有了它可以更快速、更高效地开发和检验程序。通过μVision4 IDE中引入的灵活的窗口管理系统,开发人员可以使用多台监视器,在可视界面任何地方全面控制窗口放置。 新用户界面可以更好地利用屏幕空间,更有效地组织多个窗口,为开发应用提供整齐高效的环境。 μVision4在μVision3的成功经验的基础上增加了:* System Viewer (系统查看程序)窗口,提供了设备外围寄存器信息,这些信息可以在System Viewer窗口内部直接更改。* Debug Restore Views (调试恢复视图)允许保存多个窗口布局,为程序分析迅速选择最适合的调试视图。* Multi-Project Workspace(多项目工作空间)为处理多个并存的项目提供了简化的方法,如引导加载程序和应用程序。* 为基于ARM Cortex 处理器的MCU提供了Data and instruction trace(数据和指令追踪)功能。* 扩展了Device Simulation(设备仿真)功能以支持许多新设备,如Luminary、NXP和东芝生产的基于ARM Cortex-M3处理器的MCU;Atmel SAM7/9;及新的8051衍生品,如Infineon XC88x和SiLABS 8051Fxx。* 支持许多debug adapter interfaces(调试适配器接口),包括ADI miDAS Link、Atmel SAM-ICE、Infineon DAS和ST-Link。
上传时间: 2013-10-31
上传用户:qingdou
Proteus中文入门基础教程 目 录 第一章 概述... 2 一、进入Proteus ISIS. 2 二、工作界面... 3 三、基本操作... 3 图形编辑窗口... 3 预览窗口(The Overview Window)... 4 对象选择器窗口... 5 图形编辑的基本操作... 5 参考1. 10 参考2作原理图仿真调试... 12 四、实例一... 16 电路图的绘制... 17 KeilC与Proteus连接调试... 26 五、实例二... 30 使用元件工具箱... 30 使用状态信息条... 30 使用对话框... 30 使用仿真信息窗口... 30 关闭Proteus ISIS. 30 四、菜单命令简述... 31 主窗口菜单... 31 表格输出窗口(Table)菜单... 33 方格输出窗口(Grid)菜单... 33 Smith圆图输出窗口(Smith)菜单... 33 直方图输出窗口(Histogram)菜单... 33 第二章 基于51的PID炉温度调节器的硬件设计及仿真(未完成)... 34
上传时间: 2013-10-31
上传用户:hanli8870
NEC 16位MCU参考手册 The 78K0R/IC3 is a 16-bit single-chip microcontroller that uses a 78K0R CPU core and incorporates peripheral functions, such as ROM/RAM, a multi-function timer, a multi-function serial interface, an A/D converter, a programmable gain amplifier (PGA), a comparator, a real-time counter, and a watchdog timer.
上传时间: 2013-11-02
上传用户:努力努力再努力
The Controller Area Network (CAN) is a serial, asynchronous, multi-master communication protocol forconnecting electronic control modules, sensors and actuators in automotive and industrial applications.With the SJA1000, Philips Semiconductors provides a stand-alone CAN controller which is more than a simpleeplacement of the PCA82C200.Attractive features are implemented for a wide range of applications, supporting system optimization, diagnosisand maintenance.
标签: Stand-alone contro 1000 SJA
上传时间: 2013-11-18
上传用户:yxgi5
keil 使用笔记:在Memory窗口上输入address_type:address才能看到正确地址的变量debug~perfermance analyzer加入要察看的模块名称,然后view~perfermance analyzer window 可以察看各个模块运行时间①Display address_type:address B:Bit address C:Code Memory Bx:Code Bank D D:80H 命令可以查看特殊寄存器 data D I:0 命令可以查看内部RAM数据iData; D X:0 命令可以查看外部RAM数据xData; ②R1 //显示R1 register ~R1 //显示变量R1 R1 = R7 //对寄存器Rx操作R1 = --R7 R1 = 0x20 ③main //显示main()的开始地址d main //显示main()的代码④向RAM.ROM中写数据Enter data_type address_type:address expr,expr.... data_type:int char double float long E char data:0x20 1,2,3,4 //向data区0x20开始的地址写1,2,3,4 变量放在RAM的30H,要把定义放在main前面!另外特别注意,内部RAM通常供C程序存放中间变量等,所以一定要看看编译后的程序中是否存在存储单元冲突的情况,比如如果程序中 使用了别的寄存器组的话,08-1FH单元就不能用了unsigned long data i _at_ 0x30
上传时间: 2013-11-05
上传用户:dongqiangqiang