毕业设计（论文）-基于LPC2378的高精度数据采集系统设计.doc

基于LPC2378的高精度数据采集系统设计
摘要
数据采集系统用于从一个或多个源采集模拟信号并将信号转换成可供终端设备,如数字计算机,通信网络分析和传输的数字形式。输入到数据采集系统中的模拟信号往往是由传感器和变送器将实际参数,比如压力,温度,流量等转化成相应的电信号。这些相应的电信号通常被数据采集系统转化,。
在用工控机进行数据测量和控制时,必须将信号输入到工控机里和将工控机里数据输出去。数据采集卡功能强大,可以实现多种信号的输入和输出。以LPC2378微型处理器为核心的数据采集和处理系统,"数据采集系统"中得到广泛应用。
依托LPC2378为核心处理器在嵌入式应用领域内的成熟技术,设计新一代的基于lpc2378的多参数数据采集仪,可提升自动化监测系统的技术水平。通过对数据采集系统的分析,;同时,对数据采集系统的原理,实现,意义作了主要介绍,。
并以其在1个典型自动气象站中的应用为实例,着重说明外接传感器的接口电路、低功耗、大容量固态存储等的设计,并阐明数据采集仪嵌入式系统软件设计的过程。
通过试验结果表明,该系统效果良好,有极大的应用潜力。
[关键词]:LPC2378, 数据采集系统,大容量储存,低耗能。
Based on LPC2378 high accuracy of the data acquisition system design
Abstract:Data acquisition system used for from one or DuoGe source colle
ction analog signals and will signal conversion to available for terminal equipm
ent, such as puter, work analysis and transmissio
n of the digital form. Input to the data acquisition system of the analog signal is often the sensor and the transmitter will the actual parameters, such as pressure, temperature, flow rate and turn into the corresponding electric signals. The corresponding signal is usually data acquisition system transformation, and be prepared to a terminal digital quantity of system security signal form. The accuracy pleteness of the ability to measure the quality of the system is the standard.
With puter in data measurement and control, must the signal is input to the puter in industrial output data and will go to. The data acquisition card powerful, can realize DuoZhong signal input and output. To LPC2378 micro processor as the core of the data acquisition and processing system, and provide extremely flexible object oriented dynamic graphics functions and the rich graphics library. In "data acquisition system" has been widely used.
Relying on LPC2378 as the core processor in embedded applications in the mature technology, design of a new generation of LPC2378 based o