基于μC/OS-Ⅱ的高精度超声波测距系统设计  

Design of ultrasonic distance measurement system with high precision based on μC/OS-Ⅱ

作　　者：王祖麟[1] 余强 谢毓[1] 

机构地区：[1]江西理工大学机电工程学院,江西赣州341000

出　　处：《电子设计工程》2009年第7期20-22,共3页Electronic Design Engineering

摘　　要：介绍一种以ARM处理器LPC2138为核心,采用超声波回波信号的A/D采样检测原理,实时测距,液晶屏显示的便携式系统。该系统利用ARM处理器处理速度快的优点,自行处理A/D采样速度。系统的测距范围在0.1～4.5 m内,测量精度为1 cm,实时性好,准确方便,有较高的推广价值。A portable voltage oscillographicing system which uses ARM processor LPC2138 as core is introduced,using the ultrasonic echo signal A/D sampling detection principle, real-time distance measurement, the output LCD screen display. This system uses the ARM processor processing speed, processes the A/D sampling speed voluntarily.The system distance ranging is from 0.1 to 4.5m,the measurement accuracy is 1 cm.And the system has good real-time performance,accurate and convenient, and worthy of promotion.

关 键 词：超声波测距 μC/OS-Ⅱ ARM MC3403 液晶显示(LCD) 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]