scholarly journals DETECTION OF SHIP PATHS ON DOCKING AND QUAY OCCUPATION ANALYSIS BASED ON A VIDEO-IMAGERY SYSTEM AS SUPPORT TO PORT MANAGEMENT

2012 ◽  
Vol 1 (33) ◽  
pp. 6
Author(s):  
Rebeca Gomez ◽  
Rafael Molina ◽  
Alberto Camarero ◽  
Francisco De los Santos
Keyword(s):  
Time Management ◽  
Information Acquisition ◽  
Low Cost ◽  
Activity Level ◽  
Port Authorities ◽  
Fundamental Information ◽  
Level Of Activity ◽  
Real Time Information ◽  
Time Information ◽  
Ship Speed

To manage a quay it is necessary to know the level of activity that is being developed on it. This is an imperative parameter for determining the trend of terminal capacity. This allows, among other things, to improve investments previsions, a better ship waiting time management and to select what kind of ship must operate in the terminal. In Spain, Port Authorities have to apply activity fares to ships and terminal operators, based on their activity level and occupation data. In many cases there are not automated protocols to control this information, or it is directly provided by the operator. From a probabilistic focus of the problem, R.O.M. 0.0. (2001) pointed out the necessity to assume a risk in the development of port activities. This work goes toward this goal by obtaining the areas where a greater density of activity is taking place on a dock. This information allows us to establish a probability map and then, determining a risk. To this end, ship trajectories must be monitored. The trajectories condition the availability of maneuver areas on the dock, the existence of interferences between different kind of ships and they provide fundamental information for the design of mooring systems (fenders, for instance). As a product of knowing ship trajectories we can obtain ship speed and approximation angle (both are data very dependent of each quay geometry and location) and other ship parameters. The aim of this work has been to develop a video – monitoring system of port activities (Molina, R. et al. (2007)), that provides us quay use statistics and areas with greater probability of occupation (for instance, the probability of interaction between big cargo ships and leisure crafts or fishing boats). It is a real time information acquisition system, automated, low cost and able to cover extent areas. Because Port Authorities have disposal of communication infrastructures to serve security and access control, we propose to give them an additional use.

scholarly journals Research and application of the flood simulation and operation model in Beijing

2020 ◽  
Vol 165 ◽  
pp. 04018
Author(s):  
Fuxin Chai ◽  
Shu Liu ◽  
Yang Sun ◽  
Fenglin Huo
Keyword(s):  
Flood Control ◽  
Economic Loss ◽  
Coupling Model ◽  
Scientific Basis ◽  
Operation System ◽  
Flood Simulation ◽  
Fundamental Information ◽  
Real Time Information ◽  
Downstream Area ◽  
Time Information

This study built a coupling model of hydrology and hydrodynamics for flood forecasting and reservoir-dam joint scheduling. And using HTML5, java, and WebGIS technology, developed a flood control operation system based on B/S framework for Beijing, integrated real-time information and fundamental information of metrology, rainfall, water flow, engineering situation, and waterlogging of Beijing. Through verification, the system has been successfully adopted to analyze the 2018 Ampil typhoon and provide a scientific basis for reservoirs operation including Yaoqiaoyu, Shachang, Haizi, ensuring safety of the reservoirs and reducing the economic loss of downstream area of reservoir.

scholarly journals Low Cost Remote Monitoring of Solar Plant through RS485 Communication

2019 ◽  
Vol 8 (9) ◽  
pp. 3034-3037
Keyword(s):  
Remote Monitoring ◽  
Preventive Maintenance ◽  
Data Transfer ◽  
Low Cost ◽  
Photovoltaic System ◽  
Raspberry Pi ◽  
Solar Plant ◽  
Additional Capacity ◽  
Real Time Information ◽  
Time Information

Solar energy has already grown to be the go-to form of renewable energy in the modern power grid. Monitoring the generation and consumption is imperative in order to properly plan the operation as well as the installation of additional capacity. Low-cost remote monitoring of a standalone solar farm through a Raspberry Pi is proposed in this paper. RS485 is used for data transfer between the inverter and the Raspberry Pi. Remote data monitoring is then achieved by pushing the data into the cloud from the Raspberry Pi. Real-time information is made accessible which will help in preventive maintenance, fault detection and also generate a database to aid in forecasting. This IoT based solution is suitable for solar installations in remote and inaccessible areas where regular access is inconvenient. The total number of units of power generated in a day can be calculated from which an estimate can be made about the number of units generated. From this, the financial savings that can be made by implementing a photovoltaic system for energy generation.

The Impact of Traffic Information Acquisition on the Traffic Conditions of the Athens Greater Area

2015 ◽  
pp. 174-191
Author(s):  
Athena Tsirimpa ◽  
Amalia Polydoropoulou
Keyword(s):  
Information Acquisition ◽  
Latent Variable ◽  
Traffic Information ◽  
Activity Scheduling ◽  
Variable Model ◽  
Travel Information ◽  
Traffic Conditions ◽  
Real Time Information ◽  
The Impact ◽  
Time Information

The main objective of this article is to gain fundamental understanding on the effect of real time information acquisition, on the traffic conditions of the Athens greater area. Activity scheduling is a dynamic process, where individuals often need to modify their schedule, as a result of new insights. Research so far hasn't analyzed the effect of traffic information acquisition, in activity scheduling, although several studies have been conducted to capture the factors that influence the rescheduling of activities. An integrated latent variable model has been estimated, that predicts the probability of rescheduling activities as a function of flexibility, mode choice constraints and travel information. The analysis of the results indicates that one of the biggest impacts of traffic information acquisition is reflected in the rescheduling of activities. Therefore, traffic information not only can significantly improve the travel experience of individuals but may directly affect the performance of the transportation system.

scholarly journals Sistema multiparamétrico de monitoreo remoto de movimientos por remoción en masa [A multiparameter system for remote monitoring of landslides]

2013 ◽  
Author(s):  
John Makario Londoño Bonilla ◽  
César Augusto Vega Salguero ◽  
Liliana María Maya
Keyword(s):  
Expert System ◽  
Decision Tree ◽  
Remote Monitoring ◽  
Low Cost ◽  
Rain Gauge ◽  
Activity Level ◽  
Data Set ◽  
Remote Monitoring System ◽  
Level Of Activity ◽  
El Sistema

Resumen Se desarrolló un sistema que permite monitorear remotamente movimientos de remoción en masa, usando sensores de diferentes características, mediante un esquema multi-paramétrico. En este caso se usaron sensores tipo geófono, termocupla, pluviómetro, higrómetro, e inclinómetro. La información capturada se digitaliza en campo usando una tarjeta digitalizadora diseñada en este trabajo, con la característica de variabilidad en la rata de muestreo en cada canal de adquisición. Mediante un sistema informático, la información es procesada, analizada usando un sistema experto basado en reglas y árboles de decisiones, y posteriormente almacenada en una base de datos. El sistema permite la georeferenciación de la información de los sensores y puede ser desplegada al estilo de un Sistema de Información Geográfica básico. Mediante un esquema de alertas, usando un sistema experto estilo árbol de decisiones (Decision Tree), el sistema envía información sobre el estado de actividad del deslizamiento de tierra, permanentemente. Se realizaron pruebas piloto en un movimiento por remoción en masa activo, ubicado en el municipio de Manizales (Caldas, Colombia), durante un mes. Los resultados muestran una respuesta adecuada del sistema ante la actividad del deslizamiento, evidenciando su uso para monitorear otros deslizamientos de tierra en regiones pobladas. Palabras clave Movimientos por remoción en masa, sistema monitoreo multiparámetro, sistema experto.   Abstract A remote system to monitoring active landslides was developed, by using a multi-parameter device, middle-low cost sensors, and an expert system based on rules. The system consists of six (6) analogue sensors: geophone, hygrometer, rain gauge, thermocouple, tiltmeter. All the sensors are connected to a A/D converter board of variable rate sampling, which stores, packs and transmit digitally the information to a remote device (PC or computer server). At the remote device, an expert system based on rules by means a Decision Tree (DT), and developed in open source code, processes the data and analyses the information, given a state or activity level of the landslide continuously. Information is stored in a data base. A technique of changes in slope of cumulative normalized curves of the data set for each sensor and a combination of them, is used as a one of the parameters to evaluate the level of activity of the landslide. The system was installed in an active landslide at Manizales city (2100 masl), located in the central part of Colombia, at the Andean zone. The system collected data for 1 month. Preliminary results showed that the system is able to detect temporal changes in several parameters, allowing to have an idea of the level of activity of the monitored landslide. The system can be useful for monitoring zones with very active landslides and with population living near it, in order to alert promptly in case of a possible strong mass movement.KeywordsLandslide, multi-parameter remote monitoring system, expert system.

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