SÜREKSİZLİK YÜZEY PÜRÜZLÜLÜĞÜNÜ SAYISALLAŞTIRMAK İÇİN YENİ BİR ÜÇ BOYUTLU TARAMA CİHAZI

Yıl 2013, Cilt: 1 Sayı: 3, 45 - 58, 01.09.2013

İ.emre Önsel C.atilla Öztürk

Öz

Bu çalışmada kaya kütlesinde bulunan süreksizliklere ait pürüzlülüklerin sayısallaştırılması için yeni bir üç boyutlu tarayıcı cihaz geliştirilmiştir. Cihazın çalışma prensibi, taranacak yüzeye dikey olarak çizgi lazer yansıtılması ve farklı bir açıdan görüntü alınarak, direk lineer transformasyon yöntemiyle profilin elde edilmesi esasına dayanmaktadır. Sistem üç ana parçadan, mekanik, elektronik ve yazılımdan oluşmaktadır. Mekanik kısım, üzerinde çizgi lazer ve kamera bulunan bir taşıyıcı ve bu taşıyıcının üzerinde hareket edebildiği kızak sisteminden oluşmaktadır. Kızak üzerinde taşıyıcının hareketini sağlayan sonsuz mil ve buna hareketi veren bir adım motor vardır. Elektronik kart, yazılımdan gelen komutlara göre, adım motoru ve lazeri idare etmektedir. Yazılım aracılığıyla kamera kalibrasyonu, tarama, görüntü iyileştirme, lazer çizgisinin tespiti ve direkt lineer transformasyon ile üç boyutlu yüzeyin elde edilmesi işlemleri gerçekleştirilmektedir. Bu cihaz kullanılarak, temassız olarak, istenilen yüzeyin üç boyutlu topoğrafyası elde edilerek, analiz için gerekli veriler elde edilmektedir.

Anahtar Kelimeler

Kaya kütlesi, Süreksizlik, Pürüzlülük, Üç boyutlu tarayıcı

A New 3D Scanner for Digitizing Discontinuity Surface Roughness

Öz

In this study, a new 3-dimensional scanner is developed to digitize the roughness of the discontinuity surfaces of rock mass. The device uses a camera and a laser which projects a line on the surface with right angle. The camera is placed diagonally to the surface so the profile of the surface can be recorded and can be digitized by direct linear transformation algorithm. The system consists of three main parts: hardware, electronic card and software. In the mechanical setup, the laser and the camera are scrolled along a rail by a worm gear which is driven by a step motor. Electronic card controls the laser and the step motor according to the commands from the software. Camera calibration, scanning, image analysis, detection of the laser stripe and direct linear transformation calculations are made by using the developed software. By using this device, a 3D topography of the surface can be obtained. With this data the roughness can be analyzed.

Anahtar Kelimeler

Rock mass, Discontinuity, Roughness, 3DScanner

Kaynakça

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