为解决我国水位监测野外条件下长期无人看守的问题,研制开发了基于MSP430单片机的智能水位计。从其组成到各功能分别进行了详细的介绍,该智能水位计不仅实现了水位数据的实时监测、记录和定期采集等多种工作模式,而且提高了水位监测精度,实现了水位监测的智能化。 Abstract: In order to solve the problems of long-term unmanned observation in the field water monitoring,an intelligence water-level meter based on MSP430 is developed composition and every function moduce of the water level meter was introduced in detail. It not only realizes water level data collection and storage, regularly gathering and so on, but also improves the water-level precision , finally realizes the intelligence.
上传时间: 2013-11-17
上传用户:417313137
便携式信号采集在机器健康诊断系统中有较高的应用价值。机器健康诊断的信号特点是包括低频信号。本文研究是为了实现简易而且低成本的低频便携式信号采集。以Microchip公司单片机PIC18F1320为核心设计信号采集电路,实现了信号的采集和保存。系统采用串行电可擦除芯片24LC32A保存数据,经过有线通信,信号数据由串行口通过MAX232芯片输送到微型计算机接收和保存,最后绘制出信号波形。 微型计算机程序采用Visual Basic编程。研究成功采样频率为3 kHz的复杂信号,证明该方案符合设计要求。 Abstract: Portable signal acquisition is useful in machine health monitoring systems. The signal characteristics of machine health monitoring includes low frequency signals. The goal of this study is to realize simple, inexpensive and portable low frequency signal sampling. This paper provides the project of signal acquisition system design based on PIC18F1320 microcontroller manufactured by the Microchip Technology Incorporation to achieve signal sampling and storage. The system adopted EEPROM 24LC32A to store the signal data. The microcomputer received data via wired link with the MAX232 IC through the serial port. The microcomputer program, programmed in Visual Basic, received the data, stored it and plotted the signal. The study successfully samples 3kHz complicated signals and thus meets the design requirement.
上传时间: 2013-11-19
上传用户:moerwang
介绍了以AVR单片机ATmega16为核心,采用前端信号调理电路、程控增益放大器以及波形显示LCD(GDM12864A)实现的一个简易示波器。并给出该系统设计的硬件和软件设计方案。 Abstract: Abstract:This paper introduces an easy digital storage oscilloscope based on the AVR microcontroller ATmega16,especially emphasizes on the software design and the hardware design which contains signal processing circuit,gain-programmed amplifier circuit and LCD’s interface circuit and so on.
上传时间: 2013-10-13
上传用户:ccccccc
介绍一种以MSP430单片机为基础的智能频率测量系统,采用硬件逻辑与软件指令相结合的方式控制闸门,实现0 MHz~10 MHz范围内无档切换的等精度测量。 Abstract: An intelligent frequency measurement system based on MSP430 singlechip is introduced. The system uses a way that can combine hardware logic and software instructions to contronl the strobe ,and completes the functions of equal precision in the range of 0MHz~10MHz without shifting
上传时间: 2013-10-28
上传用户:dbs012280
本文提出了一种交流信号过零检测的电路, 即捕获交流信号的零点, 并借助MSP430 单片机内部的16 位定时器A ( Timer A) 的脉冲捕获功能便能得到该交流信号的周期进而能得到它的频率。系统的硬件部分主要由MSP430 单片机以及 整流桥、光电耦合器、三级管等器件构成; 而软件部分主要是基于MSP430 单片机的C 语言程序, 包括系统的初始化、定时器 的设置等。该系统的实验结果和电路仿真吻合较好, 具有一定的应用价值
上传时间: 2013-11-09
上传用户:气温达上千万的
目 录 1.HRS150型数显洛氏硬度计简介 2.硬度计的技术参数、标尺和应用范围3.硬度计的安装及调整4.硬度计的正确使用5.常见故障及排除方法6.硬度计的保养及注意事项7.附件(装箱单)8.黑色金属硬度换算表
上传时间: 2013-11-18
上传用户:tianming222
说明:适用于没用烧写ATmega8并行编程器的朋友,初用ATmega8的工程师常常在串行编程时写错熔丝位,及加密位,造成不能再串行编程的不便,没并行编程将无法再使用,本人就是因此才特花两天时间做了一个简易的并行编程器(很简单,用万能板搭焊即可),将的芯片加密位及熔丝恢复出厂默认值恢复串行编程。
上传时间: 2013-11-07
上传用户:牧羊人8920
计步器电路 脂肪测试仪
上传时间: 2013-11-07
上传用户:独来独往
TEC6213 AM/SW/FM收音机频率显示MCU接口电路 TEC6213 是一个收音机频率计数器电路,它把收音机接收到的AM/SW/FM 频率变成数字信号,通过串行接口与MCU 相连,送MCU 进行处理。
上传时间: 2014-12-27
上传用户:firstbyte
数字频度计设计 本设计是基于AT89C2051单片机的软硬件系统设计,硬件电路包括信号预处理电路、波形转换电路、波形整形及分频电路、显示电路,它们在本文中都有详细介绍。
上传时间: 2013-10-24
上传用户:13691535575