基于MSP430 单片机的气象数据采集系统.PDF

2007 10 26 10 MSP430 郭 勇 姜学东 ( 北京交通大学电气工程学院 北京 100044) :, USB , MSP430F449 , , USB(universal serial bus) , :MSP430;;; USB : TP368 : B Design of meteorological data collection system based on MSP430 MCU uo Yong Jiang Xuedong ( School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044) Abstract: Due to the insufficiency of domestically made meteorological data collecting device, We propose a kind of meteoro- logical data collecting system based on USB (universal serial bus) . The working principle and system structure of meteoro- logical data collecting system with mult-i channel temperature, humidity and air pressure display are introduced. The system uses MSP430F149 as the controller to choose channels, collect, analyze and display data on LCD. A data storage system based U SB technology was designed to save the meteorological data on memory medium, which greatly improve the transfer speed and storage capacity. Keywords: M SP430; meteorological data collection;LCD;USB , I/ O 0 , P1 P2 ,M SP430F449 20 40 , l6 RISC ,CPU 16 , , , , , 2 , A/ D M SP430F449 I C , RS485 , 2 , I C MSP430F449 , , LCD 1