文档介绍：摘要
随着科学技术的发展和微型计算机技术的广泛应用,数据采集监测已成为日益重要的检测技术。在现代工业中,多路数据采集已被广泛应用于工业和农业等等场合,因此对数据采集系统的许多方面,如采样率、分辨率、存储深度、数字信号处理速度、抗干扰能力等方面提出了越来越高的要求。目前常用的方式是在PC机中安装数据采集卡,它采集速率高,数据传输速度快,但是安装不方便,价格高,所以设计一种安装方便、价格低的实用数据采集系统很有必要。
结合单片机的相关知识本论文设计和完成了基于ATmega16AVR单片机的多路数据采集系统的设计。系统可以采集多路信号,如电压、电流、频率和开关量等,在显示模块上准确显示,可以经过改进应用在监控多路温度、湿度和压力等场合。系统的实现是利用MEGA16自带ADC转换的强大功能,将模拟量等数据采集并传送到主机,然后送到12864液晶显示器上显示。多路数据采集系统最多可采集8路模拟数据,通过键盘可以选择采集相应的数据。另外,本装置还可以通过RS232接口与电脑连接,数据送到电脑后可以显示在屏幕上,有广大的应用前景。
关键词单片机; 液晶显示器; 电位器; 数据采集
Abstract
With the development of science and technology and the range of puter technology applications ing wider and wider, data collection has e increasingly important to monitor the detection technology. In modern industry, multi-channel data acquisition has been widely used in industry and agriculture, and so on. So the demand in many areasof the data collection system, such as the sampling rate, resolution, memory depth, digital signal processing speed, anti-interference capability is geting increasingly monly used method is to install data acquisition cards in PC, these cards have a high rate of collection and data transmission .But it is not convenient to it is necessary to design a inexpensive and practical data acquisition system .
With the knowledge of MCU I have designed pleted a thesis on ATmega16 AVR microcontroller chip to control the multi-channel data acquisition system design. The purpose of this design is collecting multiple signals, such as voltage, current, frequency and volume switch, accurately display module that can be improved in the application of multi-monitor temperature, humidity and pressure, and other occasions. its own system using the power of conversion, data acquisition and will be sent it to the host,then to 12864 LCD most it can get up to 8 channels to collect information,which canrely on the keyboard to choice a kind of idea. In addition, the device can also connect RS232 interface with puter. Data can display