基于LPC2368的多路温湿度自动校准仪设计  

Design of Multi-channel Temperature and Humidity Automatic Calibrator Based on LPC2368

作　　者：辛阿阿 高文典 王存涛 XIN Aa;GAO Wendian;WANG Cuntao(North China Sea Center of Ocean Standards and Metrology,Qingdao 266033,China)

机构地区：[1]北海标准计量中心,青岛266033

出　　处：《计量科学与技术》2020年第11期43-47,共5页Metrology Science and Technology

摘　　要：设计了基于微控制器LPC2368的多路温湿度自动校准仪。该装置以LPC2368为主控芯片,采用带触摸屏的液晶OCM320240-3作为人机接口,通过24只PA1a-5V继电器实现12路温湿度传感器信号与台式万用表DM3051表笔的隔离切换,通过RS232接口实现多路温湿度自动校准仪对计量器具台式万用表DM3051的读数。实验表明,该记录仪具有操作简便、可自动切换多路温湿度传感器信号、自动转换并记录温湿度数据等优点,在批量计量校准温湿度传感器领域有较好的应用前景。This article discussed the design of a multi-channel temperature and humidity automatic calibrator based on LPC2368.Using LPC2368 as the main controlling chip,and the LCD OCM320240-3 with a touch screen as the human-machine interface,the calibrator employs 24 PA1a-5V relays to realize the isolation and switching of 12-channel temperature and humidity sensor signals and the test pen of the DM3051 digital multimeter.The RS232 interface enables the multiplexed temperature and humidity auto-calibrator to communicate with the DM3051 digital multimeter.It is shown that the calibrator has the advantages of simple operation,automatic switching of multi-channel temperature and humidity sensor signals,automatic conversion,and recording of temperature and humidity data,which possesses good prospects in the field of batch measurement and calibration of temperature and humidity sensors.

关 键 词：多路温湿度自动校准仪 微控制器 隔离切换 万用表 

分 类 号：TH765[机械工程—仪器科学与技术]