论文字数:5447,页数:28 摘要 本论文介绍了一种以单片机为主要控制器件,以DS18B20为温度传感器的新型数字温度计。主要包括硬件电路的设计和系统程序的设计。硬件电路主要包括电源电路,主控电路,显示电路,温度传感器和串口通信电路。主控制器采用单片机STC89C52,温度传感器采用美国DALLAS半导体公司生产的DS18B20,测量的温度值除在系统板上通过两位数码管显示外,同时通过串口实现上位机(PC)的监控。系统电路设计采用Protel完成,硬件电路在通用板上实现。
The present paper introduces one kind of new digital thermometer which takes MCU as the primary control component and takes DS18B20 as the temperature sensor. Mainly includes the hardware circuit design and the system program design. The hardware circuit mainly includes power circuit, the master control circuit, the display circuit , temperature sensor and serial communication circuit. The master control circuit uses STC89C52 and the temperature sensor uses DS18B20 which is produced by American DALLAS semiconductor company . The temperature can be measured on the system board ,displayed through two digital control, and monitored by PC through the serial interface . System circuit design uses Protel to complete ,hardware circuit is designed on the general board.
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