1、 1 基于基于单片机的多点温度监测单片机的多点温度监测系统设计系统设计 摘 要: DS18B20 是一种可组网的高精度数字式温度传感器, 由于其具有单总线的独特 优点,可以使用户轻松地组建起传感器网络,并可使多点温度测量电路变得简单、可靠。 PL2303 是 Prolific 公司生产的一种高度集成的 RS232-USB 接口转换器, 可提供一个 RS232 全双工异步窜行通信装置与 USB 功能接口便利连接的解决方案。 该系统由上位机和下位机两大部分组成。下位机实现温度的检测并提供标准 RS232 通 信接口,芯片使用了 ATMEL 公司的 AT89S52 单片机和 DALLAS 公司的 D
2、S18B20 数字温 度传感器。上位机部分使用了通用 PC。该系统可应用于仓库测温、楼宇空调控制和生产 过程监控等领域。 关键字:关键字:温度测量;单总线;数字温度传感器;单片机;转换器 Based on SCM more temperature monitoring system design Abstract:DS18B20 is a network of high precision digital temperature sensor, since it has the unique advantages single bus, users can easily set up sens
3、or network, and can make more temperature measurement circuit become simple and reliable. PL2303 Prolific company is the production of a highly integrated RS232-USB interface converter, can provide a RS232 full-duplex asynchronous channeling line of communication equipment and the USB interface conv
4、enient connection function of the solution. The system consists of PC and a machine under two main components. A machine to implement the temperature detection and provide standard RS232 communication interface, ATMEL company used chip AT89S52 SCM and DALLAS company DS18B20 digital temperature sensor. PC parts used the general PC. This system can be used in storage temperature measurement, building the air conditioning control and production process monitoring, etc。 Key words:temperature meas