基于MSP430F149的实时可存取数字温度系统设计  

The Real-time to Store and Read Digital Temperature System Design Based on MSP430F149

作　　者：王金晨[1] 何印洲[1] 亓希龙[1] 

机构地区：[1]山东大学控制科学与工程学院

出　　处：《可编程控制器与工厂自动化（PLC FA）》2011年第11期53-57,共5页Programmable controller & Factory Automation(PLC & FA)

摘　　要：本系统采用MSP430F149作为系统总控制器,以数字温度传感器DS18820设计系统温度采集模块,以实时时钟芯片DS1302作为系统时钟,这三个主要芯片有一个共同特点就是功耗低,满足电池供电仪表的低功耗要求。本系统显示部分采用段式液晶,采用LED背光,既满足了系统低压、低功耗的要求,又克服了液晶非主动发光的缺点。本系统可以准确记录特定时间的环境温度。另外,本系统设有RS-232接口,可以实现单片机与上位机的通信,将单片机中存储的数据通过RS-232传送到上位机,由上位机统一处理。The system uses？MSP430F149 as the total system controller, uses digital temperature sensor DS18B20 to design system temperature acquisition module, and uses real-time clock chip DS1302 as the system clock. The three main chips have a common feature of low power consumption, and can meet the low power requirements of battery-powered instruments. The system uses segment LCD to design the display section. The use of LED backlighting not only meets the system low-voltage, and low power requirements, but also overcome the shortcomings of liquid crystal non-self-luminous. The system can accurately record the ambient temperature of specific time. In addition, the system has a RS-232 interface, which can make the microcontroller communicate with the host computer, and the data stored in the microcontroller ban be sent to the host computer via RS-232. The data can be treated by the host computer.

关 键 词：MSP430F149 DS18B20 DS1302 低功耗 可存取 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]