3-Dimensional surface inspection system for pantograph in railway nondestructive testing based on laser line-scanning

2018 ◽  
Author(s):  
Jie Guo ◽  
Jinlong Li ◽  
Xiaorong Gao ◽  
Jianping Peng ◽  
Meng Yuan
Keyword(s):  
Nondestructive Testing ◽  
Laser Line ◽  
Inspection System ◽  
Surface Inspection ◽  
3 Dimensional ◽  
Line Scanning ◽  
Dimensional Surface

Tactile sensing of 3-dimensional surface features

Robotica ◽  
1990 ◽  
Vol 8 (2) ◽  
pp. 111-115 ◽  
Author(s):  
R. Andrew Russell
Keyword(s):  
Data Acquisition ◽  
Tactile Sensing ◽  
Surface Features ◽  
3 Dimensional ◽  
Tactile Probe ◽  
Contact Sensors ◽  
Proximity Sensing ◽  
Dimensional Surface

SummaryRobots will require some form of proximity sensing in order to perform many delicate exploration, assembly and manipulation tasks. This paper describes a novel articulated tactile probe which can locate and accurately measure the 3-dimensional surface contours of small objects. Although lacking the speed of data acquisition possible with vision and other non-contact sensors, the resulting data is easily processed to give useful information about an object.

Magic sol–gel silica films encapsulating hydrophobic and hydrophilic quantum dots for white-light-emission

RSC Advances ◽  
2014 ◽  
Vol 4 (39) ◽  
pp. 20358-20363 ◽  
Author(s):  
Ping Yang ◽  
Hsueh-Shin Chen ◽  
Junpeng Wang ◽  
Quande Che ◽  
Qian Ma ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emission ◽  
Sol Gel ◽  
Silica Film ◽  
White Light Emission ◽  
Silica Films ◽  
White Leds ◽  
3 Dimensional ◽  
Dimensional Surface

A sol–gel silica film was fabricated by a spraying approach on various substrates with a 3-dimensional surface for white LEDs.

Innovative Surface Inspection System Deployment

2021 ◽  
Author(s):  
L. Alberto De Oliveira ◽  
B. Feagan ◽  
B. Isbell ◽  
B. Masters ◽  
A. Perrichon ◽  
...  
Keyword(s):  
Inspection System ◽  
Surface Inspection

scholarly journals Super resolution laser line scanning thermography

2020 ◽  
Vol 134 ◽  
pp. 106279 ◽  
Author(s):  
S. Ahmadi ◽  
P. Burgholzer ◽  
P. Jung ◽  
G. Caire ◽  
M. Ziegler
Keyword(s):  
Super Resolution ◽  
Laser Line ◽  
Line Scanning

Research on the High Precision Laser Line Scanning Measuring System

2007 ◽  
Vol 339 ◽  
pp. 131-135 ◽  
Author(s):  
Jian Jun Ding ◽  
Zhuang De Jiang ◽  
Bing Li ◽  
Jun Jie Guo
Keyword(s):  
High Precision ◽  
Laser Scanning ◽  
Laser Line ◽  
Measuring System ◽  
Surface Measurement ◽  
Iteration Algorithm ◽  
Reconstruction Method ◽  
Loop Feedback ◽  
Axis Position ◽  
Line Scanning

Rapid reverse technology is one of the key technologies with which the enterprises develop new product and occupy the market rapidly. How to realize the reverse measurement and CAD geometry reconstruction rapidly and accurately is always the most important focus for the researchers. Based on the laser scanning technology, the realization principle of the laser line scanning measuring system is presented and the approaches to improve the precision are also analysed in the paper. The self-adaptation adjustment of the probe position can move the light knife image to the optimal imaging area of the CCD according to the calibration result, which will ensure the measurement precision of the CCD image. With the inner velocity loop and outer position loop feedback control, the simple axis position precision of the mechanical system can be controlled within 5um. In order to pick up the points of the light knife centre rationally and exactly, the reconstruction-disperse iteration algorithm is put forward. After processed by different iteration times, the optimal points can be obtained. The reconstruction method of curve and surface based on NURBS is also given. The paper presents the application and realization of the system at last, which realizes the curve and surface measurement with high precision.

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