基于AT89C55WD单片机的人工气候箱设计  

Design of Artificial Climate Box Based on AT89C55WD Single Chip Computer

作　　者：王艳霞[1] 唐为义[1] 刘蕾[2] 

机构地区：[1]青岛科技大学自动化与电子工程学院,青岛266042 [2]东北大学机械工程与自动化学院,沈阳110004

出　　处：《自动化仪表》2007年第8期54-55,58,共3页Process Automation Instrumentation

摘　　要：为创造局部气候,以AT89C55WD单片机为微处理器,设计了人工气候箱。给出了硬件电路结构框图和温湿度测量电路以及光电转换电路。系统采用ICL7135A/D转换器串行工作方式,仅占用AT89C55WD的一个I/O口和一个内部定时器,节约了单片机的口线,简化了系统的硬件结构,同时提高了温湿度的测量精度。实验验证了气候箱的可行性和测量精度。In order to create local climate, the artificial climate box with the single chip computer AT89C55WD as a microprocessor is designed. The structural block diagrams of hardware circuits, the measuring circuits of temperature and humidity and the photoelectric converting circuit are given. In the system ICL7135 A/D converter serial mode is adopted and only one of the I/O port and one of the internal timer of AT89C55WD are used, for saving the ports of single chip computer and simplifying the system structure, meanwhile, the measurement accuracy of temperature and humidity has been enhanced. The feasibility and measurement accuracy of the climate box have been verified by experiments.

关 键 词：单片机 串行 人工气候箱 I^2C总线 设计 

分 类 号：TP216.2[自动化与计算机技术—检测技术与自动化装置]