scholarly journals Comparison of Complex Traffic Junction Descriptions in Automotive Standard Formats

2021 ◽  
Author(s):  
Nikol Krausz ◽  
Vivien Potó ◽  
János Máté Lógó ◽  
Árpád Barsi
Keyword(s):  
Data Exchange ◽  
Navigation Systems ◽  
Pilot Site ◽  
Sample Area ◽  
Long Time ◽  
Map Data ◽  
Clear Description

Autonomous and highly automated transportation is very attractive not only for the automotive but also for the mapping industry. In order to exploit the technology, the latest survey solutions are needed, but beyond that, a clear description of the content is a must. Three standards have been selected: (1) used for a long time in navigation systems (NDS), (2) developed for simulation purposes (OpenDRIVE), and (3) designed and proposed for general map data exchange (GDF). In this paper, we present the approach of the three standards, then apply the tools of the standards to a specific sample area, a complex traffic junction, and produce maps in the appropriate formats. The evaluation of the pilot site shows that the difficulty of the exchange standard appears to be a serious obstacle. In the process of applying the navigation standard, the personality of the evaluator (the map maker) is also revealed. In the simulation format, the description of reality is gradually improved by including more and more extra elements.

scholarly journals On-site Smart Operation and Maintenance System for Substation Equipment Based on Mobile Network

2018 ◽  
Vol 14 (03) ◽  
pp. 66 ◽  
Author(s):  
Lin Cheng ◽  
Wenshan Hu ◽  
Zhengyang Liu ◽  
Wei Cai
Keyword(s):  
Real Time ◽  
Data Center ◽  
Data Exchange ◽  
Mobile Network ◽  
Mobile App ◽  
Electrical Grid ◽  
Maintenance System ◽  
Operation And Maintenance ◽  
Long Time ◽  
Substation Equipment

The maintenance of substations is crucial for the safety of the electrical grid and power industry.<strong> </strong>However, for long time, the maintenance teams in the field and the experts in the power companies are divided. The data and expertise exchanges between the on-site maintenance teams and data center are delayed due to the lack of effective communication. This paper introduces an on-site smart operation maintenance system for substation equipment based on mobile network. It is able to establish real-time communication and data exchange channels between the maintenance teams and data center. It consists of an operation and maintenance system platform located on the data center side and smart operation and maintenance boxes with mobile APP which are carried to the field side by the maintenance teams. As the kernel of the system, the smart boxes are bridges between the data center and operation sites. On one hand, it is able to formally upload data to the data center in real-time. One the other hand, the operation and maintenance personnel are able to call for help from the resource on the data center anytime. Using the system proposed in the paper, both efficiency of the operation and maintenance and the normalization of the data can be improved.

Route Search and Evaluation Method Including Charging Plan for Electric Vehicles

2014 ◽  
Vol 8 (5) ◽  
pp. 698-704 ◽  
Author(s):  
Takuya Taguchi ◽  
◽  
Kei Matsumoto ◽  
Keita Imamura ◽  
Koichiro Goto ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Evaluation Method ◽  
Evaluation Criteria ◽  
Navigation Systems ◽  
Charging Time ◽  
Long Time ◽  
Residual Capacity ◽  
Future Work ◽  
Route Search

Electric vehicles (EVs) have numerous inherent challenges, including running out of power frequently and taking a long time to charge. To make matters worse, current automotive navigation systems cannot provide proper route searches that include charging plans. One way to tackle these challenging problems is to propose several route plans and select one which meets the driver’s needs. In this paper, the following three evaluation criteria are proposed: shortening travel time by predicting charging queues, maintaining high residual capacity of the battery, and utilizing charging time. The proposed method is applied to Okinawa, Japan as a case study. The simulation results using this evaluation method in Okinawa demonstrate its potential utility and open the way for future work on relieving the stress of EV drivers.

scholarly journals A chaos theory inspired, asynchronous two-way encryption mechanism for cloud computing

2021 ◽  
Vol 7 ◽  
pp. e628
Author(s):  
Ravinder Rao Peechara ◽  
Sucharita V
Keyword(s):  
Communication Systems ◽  
Data Exchange ◽  
High Volume ◽  
Random Keys ◽  
Critical Issues ◽  
Long Time ◽  
Data Volume ◽  
In The Beginning ◽  
High Degree ◽  
Transactional Data

Data exchange over the Internet and other access channels is on the rise, leads to the insecurity of consequences. Many experiments have been conducted to investigate time-efficient and high-randomized encryption methods for the data. The latest studies, however, have still been debated because of different factors. The study outcomes do not yield completely random keys for encryption methods that are longer than this. Prominent repetition makes the processes predictable and susceptible to assaults. Furthermore, recently generated keys need recent algorithms to run at a high volume of transactional data successfully. In this article, the proposed solutions to these two critical issues are presented. In the beginning, one must use the chaotic series of events for generating keys is sufficient to obtain a high degree of randomness. Moreover, this work also proposes a novel and non-traditional validation test to determine the true randomness of the keys produced from a correlation algorithm. An approximate 100% probability of the vital phase over almost infinitely long-time intervals minimizes the algorithms’ complexity for the higher volume of data security. It is suggested that these algorithms are mainly intended for cloud-based transactions. Data volume is potentially higher and extremely changeable 3% to 4% of the improvement in data transmission time with suggested algorithms. This research has the potential to improve communication systems over ten years by unblocking decades-long bottlenecks.

scholarly journals A smart fire detection system using iot technology with automatic water sprinkler

2021 ◽  
Vol 11 (4) ◽  
pp. 2994
Author(s):  
Hamood Alqourabah ◽  
Amgad Muneer ◽  
Suliman Mohamed Fati
Keyword(s):  
Data Exchange ◽  
Emergency Services ◽  
Detection System ◽  
Real Life ◽  
Fire Department ◽  
Fire Detection ◽  
False Alarms ◽  
Real Life Data ◽  
Long Time ◽  
Fire Detection System

House combustion is one of the main concerns for builders, designers, and property residents. Singular sensors were used for a long time in the event of detection of a fire, but these sensors can not measure the amount of fire to alert the emergency response units. To address this problem, this study aims to implement a smart fire detection system that would not only detect the fire using integrated sensors but also alert property owners, emergency services, and local police stations to protect lives and valuable assets simultaneously. The proposed model in this paper employs different integrated detectors, such as heat, smoke, and flame. The signals from those detectors go through the system algorithm to check the fire's potentiality and then broadcast the predicted result to various parties using GSM modem associated with the system. To get real-life data without putting human lives in danger, an IoT technology has been implemented to provide the fire department with the necessary data. Finally, the main feature of the proposed system is to minimize false alarms, which, in turn, makes this system more reliable. The experimental results showed the superiority of our model in terms of affordability, effectiveness, and responsiveness as the system uses the Ubidots platform, which makes the data exchange faster and reliable.

Real-Time Smart Navigation and the Genetic Approach to Vehicle Routing

2015 ◽  
pp. 1991-2002
Author(s):  
Cristina De Castro ◽  
Barbara Mavì Masini ◽  
Ibrahim Habib ◽  
Oreste Andrisano
Keyword(s):  
Vehicle Routing ◽  
Real Time ◽  
Traffic Control ◽  
Data Exchange ◽  
Traffic Monitoring ◽  
Navigation Systems ◽  
Variant Information ◽  
System Data ◽  
Real Time Transmission ◽  
Communication Methods

The ever increasing traffic requirements are boosting the evolution of Smart Navigation Systems, where innately time-variant information, such as road conditions, must be properly handled with. For instance, when the quickest route to a destination is requested, if significant traffic variations occur during the trip, the first path suggested can become no longer efficient. In this case, the user must be indicated an alternative in real-time. Three main interactive factors contribute to service quality: architectures, wireless communication methods and vehicle routing algorithms. An infrastructure and communication strategies are thus presented, for traffic monitoring, vehicle-system data exchange, and real-time transmission of path variations. Results about saved travel time are reported. A survey is then presented about the performance of Genetic Algorithms in real-time routing, with special attention to localized searches; a variant is consequently proposed of the adopted traffic control and prediction architecture.

Integrated GNSS antenna with an embedded inertial measurement unit

2020 ◽  
pp. 16-23
Author(s):  
Nikolay N. Vasilyuk
Keyword(s):  
Inertial Measurement Unit ◽  
Data Exchange ◽  
Digital Data ◽  
Measurement Unit ◽  
Navigation Systems ◽  
Inertial Measurement ◽  
Practical Applications ◽  
Integrated Antennas ◽  
Common Structure ◽  
Integrated Antenna

When constructing inertial/GNSS navigation systems, it is necessary to determine coordinates of a GNSS antenna relative to an inertial measurement unit. It is proposed to solve this problem by integrating of the inertial unit and GNSS antenna’s element into a common structure called an integrated antenna. This approach allows to determine the required coordinates in factory conditions, during a manufacturing of the integrated antenna. Operation principles of design modules of the integrated antenna and ways to use this antenna in the inertial/GNSS navigation systems have been described. Design features of a half-duplex digital data exchange between the antenna and a data processor have been indicated. Approaches to use this exchange to solve some service tasks of the navigation system have been proposed. It is noted that the integrated antenna has its own measuring basis. Methods of accounting of the attitude of this basis in practical applications of the integrated antennas in the single- and multi-antenna inertial/GNSS navigation systems have been described.

A Micro-Fluxgate Magnetic Sensor Using Closely Coupled Excitation and Pick-Up Coils

2002 ◽  
Vol 729 ◽  
Author(s):  
Won-Youl Choi ◽  
Kyoung-Won Na ◽  
Sung-Jin Ahn ◽  
Sang-On Choi
Keyword(s):  
Coercive Field ◽  
Seed Layer ◽  
Core Layer ◽  
Sine Wave ◽  
Magnetic Core ◽  
Magnetic Sensor ◽  
Navigation Systems ◽  
Sensing Element ◽  
Chip Size ◽  
Map Data

AbstractThis paper presents a micro-fluxgate magnetic sensor composed of a rectangular-ring shaped magnetic core and solenoid excitation and pick-up coils. In order to improve the sensitivity of sensing element, the excitation and pick-up Cu coils are formed as a closely coupled structure. This unique coil structure allows to excite the magnetic core in an optimal condition with reduced excitation current. The 11 μm thick excitation and pick-up Cu coils were electroplated using Cr (300 Å) / Au (1500 Å) seed layer. The 2.9 μm thick Ni0.8Fe0.2 (permalloy) magnetic core layer was also electroplated with photoresist frame using sputtered Ni0.8Fe0.2 seed layer. The rectangular-ring shaped core was covered by photoresist and wet etching using dilute sulfuric acid. The magnetic core has a DC permeability of ∼1100 and coercive field of 0.1 Oe. The magnetic core is easily saturated due to the low coercive field and closed magnetic path for the excitation field. The chip size of the fabricated sensing element is 1.3 × 1.0 mm2. Excellent linear response over the range of –100 μT to +100 μT is obtained with 14 V/T sensitivity at excitation sine wave of 3 VP-P and 150 kHz. This low magnetic field sensing element is very useful for various applications such as: portable navigation systems including north-up and map data scrolling, military research, medical research, and space research.

scholarly journals Autonomous vehicle based in cooperative GPS and inertial systems

Robotica ◽  
2008 ◽  
Vol 26 (5) ◽  
pp. 627-633 ◽  
Author(s):  
Vicente Milanés ◽  
José E. Naranjo ◽  
Carlos González ◽  
Javier Alonso ◽  
Teresa de Pedro
Keyword(s):  
Control System ◽  
Autonomous Vehicle ◽  
Navigation Systems ◽  
Cooperative System ◽  
Positioning Systems ◽  
Automated Vehicle ◽  
External Agents ◽  
Long Time ◽  
Inertial Control ◽  
Short Time

SUMMARYA system including Global Positioning Systems (GPS) and digital cartography is a good solution to carry out vehicle's guidance. However, it has inconveniences like high sensibility to multipath and interference when the GPS signal is blocked by external agents. Another system is mandatory to avoid this error. This paper presents a cooperative system based on GPS and Inertial Navigation Systems (INS) for automated vehicle position. The control system includes a decision unit to choose which value is the correct. In case GPS is working at top precision, it takes the control. On the other part, GPS signal can be lost and inertial control system guides the car in this occasion. A third possibility is contemplated: we receive the signal from GPS but the accuracy is over one meter. Now, position value is obtained by means of both systems. Experimental results analyze two situations: guidance in an urban area where GPS signal can be occluded by buildings or trees during short time intervals and the possibility of loss of the signal in long time to simulate the circulation in tunnels. Good results have been observed in tests and it demonstrates how a cooperative system improves the automated vehicle guidance.

Data Dissemination and Visualization Browsing of Digital Map Based on Web

2013 ◽  
Vol 421 ◽  
pp. 642-646
Author(s):  
Guang Xue Chen ◽  
Qi Feng Chen ◽  
Jing Lei Tai ◽  
Jiang Wen Liu
Keyword(s):  
Data Base ◽  
Data Exchange ◽  
Data Dissemination ◽  
Network Environment ◽  
Component Technique ◽  
Map Symbol ◽  
Map Symbol Base ◽  
Map Data ◽  
Specific Implementation ◽  
Display Control

We proposed overall design of the visualization browsing map data in network environment in this paper. And we developed map data flow according to the data structure and attributes of map data base. We programmed one map display control, MapCtrl.ocx, with GUI in the specific implementation. It could browse the map by utilizing map data base and self-designed map symbol base. Furthermore, we detailed the specific process of programming the control and the related techniques, such as component technique, data exchange technique and display technique. We developed a prototype of map data visualization browsing system based on ActiveX in network environment, which could achieve several functions such as browsing vector graphics of map data on internet, operation and simple query and analysis.

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