基于ARM内核的数字水平仪设计  

Design of Digital Level Meter Based on ARM

作　　者：陈玮[1] 徐明铭[1] CHEN Wei,XU Ming-ming (Electron and Information Department,Putian University,Putian 351100,China)

机构地区：[1]莆田学院电子信息工程学系

出　　处：《电脑知识与技术（过刊）》2010年第35期10148-10149,10155,共3页Computer Knowledge and Technology

摘　　要：设计一种基于ARM内核的水平角度测量仪器。水平仪采用Philips公司的嵌入式处理器LPC2138作为主控核心,运用双轴加速度传感器ADXL202进行水平角度测量。ADXL202传感器可以生成脉宽占空比信号。LPC2138通过测量输入脉冲的高电平时间及周期实现占空比测量,从而可得到角度数值,并用型号为5110的液晶屏显示。设计实现数字化,能快速采集、显示水平度数。A digital level meter which used the ARM kernel is designed.LPC2138 Embedd microprocessor was used as the controller and processor of the system,which using the Digital level meter ADXL202 to measure the tilt.The ADXL202 can build a duty ratio signal of pulse-width.The time of high level and the cycle of the input pulse can be measure with the LPC2138 to calculate duty cycles,and after it the tilt can be get.At the end the tilt was displayed by the LCD of 5110.The design was realized by using Method of Digitalization,which can collect and display the tilt quickly.

关 键 词：嵌入式微处理器 数字水平仪 双轴加速度传感器 ADXL202 

分 类 号：TH761[机械工程—仪器科学与技术;机械工程—精密仪器及机械]