公开(公告)号：KR1020120040489A

公开(公告)日：2012-04-27

申请号：KR1020100101941

申请日：2010-10-19

Applicant: 한국도로공사

Inventor： 김진광 ,  장현익 ,  김찬우 ,  이일용 ,  김경석

IPC: G01B17/00 ,  G01N29/04

Abstract: PURPOSE: A system and a method for measuring length of reinforcing bar are provided to detect the faults of laid reinforcing bar by measuring the length of reinforcing bar regardless of the properties of a medium. CONSTITUTION: A system for measuring length of reinforcing bar comprises a shocking unit(100), a sensor(200), an analyzing unit(300). A part of the shocking unit applies shock to a reinforcing bar by being installed at the end of an exposed reinforcing bar. The sensor detects incident wave and a reflected wave. The incident wave, which is generated by the impact of the shocking unit, enters along longitudinal direction of the reinforcing bar. The reflected wave is reflected at the inside of the reinforcing bar. The analyzing unit calculates the time interval of the incident wave and the reflected wave, and calculates the length of the reinforcing bar by using the time interval , and the intrinsic propagation velocity of the reinforcing bar.

Abstract translation: 目的：提供一种用于测量钢筋长度的系统和方法，用于通过测量钢筋的长度来检测铺设钢筋的缺陷，而不管介质的性质如何。 构成：用于测量钢筋长度的系统包括冲击单元（100），传感器（200），分析单元（300）。 冲击单元的一部分通过安装在暴露的钢筋的末端而对钢筋施加冲击。 传感器检测入射波和反射波。 由冲击单元的冲击产生的入射波沿着钢筋的纵向方向进入。 反射波在钢筋的内部被反射。 分析单元计算入射波和反射波的时间间隔，并且通过使用时间间隔和钢筋的固有传播速度来计算钢筋的长度。