基于C8051F350单片机的智能仪表设计与实现

Design and realization of intelligent instrument based on C8051F350

为满足工业现场对仪器仪表的需求,提出了一种以C8051F350单片机为核心控制器件的智能仪表设计方案,该仪表系统可以测量传感器输出的1～5 V、4～20 mA的标准模拟信号以及RS232和RS485数字信号,实现"一表多用";仪表采用OLED显示屏,相比于液晶屏环境适应性更强,可耐受的温度区间达到-40～85摄氏度,仪表的工作温度范围更大,符合工业现场的应用要求;该系统设计简单、显示直观、准确、通用性强,实际应用表明,该仪表工作稳定、显示精度较高,达到了设计要求。

In order to satisfy the need of the instruments in industry field, we designed a new instrument,which treat the C8051F350 micro controller as the core control devices. The system can measure theanalog signal from 1 V to 5 V, 4 to 20 mA , RS232 and RS485 digitalsignal also can be measured, itrealized ＂one instrument, many applications＂. OLED was adopted and the ability to adapt to theenvironment is better compared with LCD. It can stand the temperature from -40 to 85 degrees and it isconsistent with the industry field. The hardware was simple, intuition , accurate, universal and so on.The practical application shows that the instrument works stable, display accurate and reach the purposeof designer.