基于电容检测技术的公路路面测厚仪的设计  

Design of measuring instrument of road surface thickness based on capacitance test technique

作　　者：刘艳妮[1] 李兴富[1] 宋凯云[2] 

机构地区：[1]桂林航天工业高等专科学校电子工程系,广西桂林541004 [2]青岛海信电器股份有限公司多媒体研发中心,青岛266071

出　　处：《电子测试》2009年第8期83-85,93,共4页Electronic Test

摘　　要：分析了电容检测技术在公路路面厚度检测中的应用,利用环形电容传感器分别对自制的厚度不等的公路路面物理模型的厚度值进行检测,设计了以单片机为微处理器,兼有键盘、显示器、存储器等外围电路的电容测量电路对环形电容传感器的输出电容值进行采集,利用归一化处理方法依次得到不同厚度的路面模型的厚度值并显示出来。经过实验测试,该测量系统测量路面模型的厚度范围为0～15cm,测量精度达±3.0%,各项指标均达到了设计要求。Application of capacitance test technique is discussed in measuring road surface thickness. The ring capacitance is used to measure the thickness of model road surface. The capacitance measurement circuit that consists of single-chip microcomputer, keyboard, monitor, memory etc. acquires capacitance values. The thickness of model road surface is obtained by normalized method and displayed. The thickness range of model that can be tested is 0--15cm and the precision is ±3.0% which meet the designed requirements.

关 键 词：电容检测技术 路面物理模型 公路路面厚度 

分 类 号：TH821.1[机械工程—仪器科学与技术]