scholarly journals DRONE-BASED CONTAINER CRANE INSPECTION: CONCEPT, CHALLENGES AND PRELIMINARY RESULTS

2021 ◽  
Vol V-1-2021 ◽  
pp. 121-128
Author(s):  
M. Maboudi ◽  
A. Alamouri ◽  
V. De Arriba López ◽  
M. S. Bajauri ◽  
C. Berger ◽  
...  
Keyword(s):  
Image Analysis ◽  
Complex Structure ◽  
Data Management System ◽  
Target Class ◽  
Query Image ◽  
Container Cranes ◽  
Preliminary Results ◽  
Container Crane ◽  
Surface Damages ◽  
Single Epoch

Abstract. Container crane inspection is a very important task to maintain their uninterrupted operation. Nevertheless, this is a costly and time-consuming activity if performed manually. Recently, image-based detection of surface damages or changes using drones has gained increasing interest in industry; especially when objects of interest have a complex structure like container cranes. One main aim of this paper is a single-epoch image analysis which will also serve later for multi-epoch processing. It provides reliable information about current defects that may lead to big damages if not inspected by experts. Naïve Bayes classifier is employed to classify the images in different classes of which critical defects and especially rust is important. The preliminary results show that the precision on the target class reached about 99%. However, 87% percent recall in this class is not enough and it should be improved for this application.Having a large dataset requires an efficient data management system to provide users and decision makers with the information needed. In addition, in order to foster full automation, the aforementioned image analysis component should have a direct connection to the database and thus is able to query image and semantic information. We therefore introduce the second aim of our research, that is a concept for database design. Here, not only the raw data and the final results are integrated but also the intermediate results. At the same time, the database concept is connected to an integrated client interface that allows retrieving data of interest in a virtual globe.

Service-Oriented Architecture Based Dockside Container Crane CAD/CAE Integration System

2009 ◽  
Author(s):  
Hua Li ◽  
Chonghua Wang ◽  
Yiming Rong
Keyword(s):  
Service Oriented Architecture ◽  
Complex Structure ◽  
User Requirement ◽  
Element Analysis ◽  
Container Cranes ◽  
3D Cad ◽  
Container Crane ◽  
Function Modules ◽  
Service Oriented ◽  
High Level

Dockside container cranes are well-known for their complex structure and thus many factors to be considered in their development. A service-oriented architecture based CAD/CAE system for dockside container crane is proposed in this paper. First, customers provide specifications of the cranes to designers through Browser/Server (B/S) based user requirement input interfaces. Second, designers parametrically model the cranes through 3D CAD platform, and CAE analysts conduct explicit dynamic Finite Element Analysis (FEA) on the designed crane structure. CAD and CAE function modules are accomplished through Client/Server (C/S) architecture. Next, based on the high-level web service and lower-level socket communication, a Design-Analysis-Integration (DAI) module is developed to maintain a model consistence between CAD module and CAE module. Then, the design results are displayed to the customers through B/S mechanism. Last, the SQL-Server based crane product database used to support the whole design and analysis processes is discussed. Since all the operations are conducted through internet/intranet and service-oriented architecture, customers, designers and analysts are able to participate in the product development processes at different geographical locations.

scholarly journals Investigation of Seismic Behavior of Container Crane Structures by Shake Table Tests and Mathematical Modeling

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
C. Oktay Azeloglu ◽  
Ayse Edincliler ◽  
Ahmet Sagirli
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Seismic Behavior ◽  
Dynamic Behaviour ◽  
Earthquake Ground Motion ◽  
Shake Table ◽  
Engineering Structures ◽  
Shake Table Tests ◽  
Container Cranes ◽  
Container Crane

This paper is concerned with the verification of mathematical modeling of the container cranes under earthquake loadings with shake table test results. Comparison of the shake table tests with the theoretical studies has an important role in the estimation of the seismic behavior of the engineering structures. For this purpose, a new shake table and mathematical model were developed. Firstly, a new physical model is directly fixed on the shake table and the seismic response of the container crane model against the past earthquake ground motion was measured. Secondly, a four degrees-of-freedom mathematical model is developed to understand the dynamic behaviour of cranes under the seismic loadings. The results of the verification study indicate that the developed mathematical model reasonably represents the dynamic behaviour of the crane structure both in time and frequency domains. The mathematical model can be used in active-passive vibration control studies to decrease structural vibrations on container cranes.

Improved Image Analysis Based System to Reliably Predict the Live Weight of Pigs on Farm: Preliminary Results

2011 ◽  
Vol 8 (2) ◽  
pp. 107-119 ◽  
Author(s):  
T.M. Banhazi ◽  
M. Tscharke ◽  
W.M. Ferdous ◽  
C. Saunders ◽  
S.H. Lee
Keyword(s):  
Image Analysis ◽  
Live Weight ◽  
Preliminary Results ◽  
On Farm

scholarly journals Development of a Virtual Reality Simulation for Remote Controlled Container Crane Operator Training

2020 ◽  
Author(s):  
Aviral Goel ◽  
Ali Humaid Abdullah Al Tubi ◽  
Alaa Ahmed Eltayeb
Keyword(s):  
Virtual Reality ◽  
Large Scale ◽  
Reference Model ◽  
Three Dimensions ◽  
Virtual Reality Simulation ◽  
Control Room ◽  
Operator Training ◽  
Container Cranes ◽  
Virtual Control ◽  
Container Crane

Any large scale cargo port requires the use of container cranes for loading of intermodal containers as well as unloading them. The operator of such a large crane must be appropriately trained to prevent any accidents at the cargo port. This should be achieved by training crane operators on all the protocols of crane operation with significant hours of practice. The aim of this project is to develop a virtual reality (VR) simulation for operator training of container cranes which are remotely controlled, situated at the cargo ports. The simulation consists of a virtual control room equipped with joysticks and display screens, container crane, container ships, trucks and a cargo port environment. We used an actual super post-Panamax quay crane as a reference model for this simulation. The project has been built using Unity3d for the programming and 3DSMAX for the designing of models. The virtual joysticks in the simulation can be interacted by using the Oculus Rift VR setup thus allowing to maneuver the crane and the container load in all three dimensions. This paper mainly discusses the structure and implementation of the virtual reality simulation for crane operator training, along with a proposal for further improvements.

Tu1445 Computerized, Image Analysis of Diminutive Polyps During Colonoscopy - Preliminary Results of a Feasibility Study

2014 ◽  
Vol 79 (5) ◽  
pp. AB542
Author(s):  
Amir Klein ◽  
Elizabeth E. Half ◽  
Yehuda Chowers ◽  
Matti Waterman ◽  
Halim Awadie ◽  
...  
Keyword(s):  
Image Analysis ◽  
Feasibility Study ◽  
Computerized Image Analysis ◽  
Preliminary Results

scholarly journals Squid Species Matching using Fuzzy Edge Based Algorithm

2020 ◽  
Vol 8 (6) ◽  
pp. 3887-3891
Keyword(s):  
Species Identification ◽  
Complex Structure ◽  
Retrieval Algorithm ◽  
Shape Feature ◽  
Query Image ◽  
Squid Species ◽  
Marine Food Chain ◽  
Morphometric Features ◽  
Commercial Species ◽  
Edge Based

In the area of Commercial species identification, Squids species identification is significant because Squids plays an important role in Marine food chain. The identification of Squid species requires information about their morphometric features. Body shape feature is one of the important morphometric features for Squids. Hence, we consider only shape feature of Squid. Edge detection is an important technique to extract the shape feature for Squid images. Squid images contains uncertainty because of the problems occurs in the data acquisition and its complex structure. Hence, to avoid above mentioned uncertainties occurs in the Squid images consider Fuzzy edge map. In this work Fuzzy Edge Based Retrieval Algorithm is proposed for the query based Squid image retrieval from Squid’s database. In the process of Fuzzy Edge Based Retrieval Algorithm, first Fuzzy Edge map is constructed for Squid images later the Euclidian distance similarity measure performs between Query image and the candidate images in the Squids database. Based on the similarity metric the relevant Squid images are matched with query image are retrieved. The performance of proposed algorithm analysed with precision recall graphs.

Seismic Behavior of a Jumbo Container Crane Including Uplift

2011 ◽  
Vol 27 (3) ◽  
pp. 745-773 ◽  
Author(s):  
Laura D. Jacobs ◽  
Benjamin D. Kosbab ◽  
Roberto T. Leon ◽  
Reginald DesRoches
Keyword(s):  
Seismic Behavior ◽  
Time History ◽  
Nonlinear Finite Element ◽  
Analytical Models ◽  
Elastic Behavior ◽  
Model Structure ◽  
Shake Table Tests ◽  
Container Cranes ◽  
Container Crane ◽  
Type Response

Despite their importance to successful port operations, container cranes have received little attention in the context of seismic behavior. This paper presents the results of scale testing and analysis of a typical jumbo container crane subjected to earthquake loading. A series of 1:20 scale shake table tests of the model structure is performed under increasing levels of acceleration to assess and characterize the critical responses. Complimentary detailed nonlinear finite element time history analyses are also carried out. It is found that the portal frame response dominates elastic behavior and is closely coupled with an uplift and derailment rocking-type response at higher excitation levels. Proposed analytical models can capture this coupled response well, while a simple pseudostatic analysis can accurately estimate the onset of uplift and derailment.

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