基于ARM微处理器LPC2148的LED温度显示器设计

为了更加直观地显示生产环境中的温度变化以提高生产作业的效率,采用ARM（LPC2148）作为主芯片设计了一个多位LED温度显示器。通过温度传感器感知被测环境的温度,将温度信号转换成电信号后,通过ARM处理器自带的A/D转换器进行转换,将转换后的数字信号通过LED进行数字显示可以直观观测到被测环境的温度（此过程需要CPLD来实现主芯片的I/O扩展以实现多位LED的显示）,此温度显示器较传统的标准水银温度计有更好的直观性,应用范围较宽并且使用方便简单。

LED temperature monitor designing based on ARM microprocessor

In order to display the environment temperature visually and to improve the production efficiency ,this design used ARM （LPC2148 ） to make a LED temperature monitor. Through the temperature sensor,the environmental temperature could be measured and the temperature signal also could be converted into electrical signal,through the A/D converter brought by ARM processor,which would be converted to digital signals.And through LED digital display the digital signals could be observed directly. This temperature monitor was better visual ,wide application,simple and convenient use than traditional standard mercury thermometer.