scholarly journals Roadside Unit Deployment Mechanism Based on Node Popularity

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Ming Mao ◽  
Peng Yi ◽  
Zhen Zhang ◽  
Liang Wang ◽  
Jinchuan Pei
Keyword(s):  
Contact Time ◽  
Service Performance ◽  
Operating Efficiency ◽  
Internet Of Vehicles ◽  
Time Ratio ◽  
Roadside Unit ◽  
Road Intersections ◽  
Simulation Results ◽  
Resource Costs ◽  
System Operating

Internet of Vehicles (IoV) can significantly improve the driving conditions of vehicles, but the mobility characteristics of vehicles put forward higher requirements for the robustness of the IoV system. As an important component of the IoV, the deployment of RoadSide Unit (RSU) directly influences the service performance of the IoV system to vehicles, and reasonable RSU deployment can save resource costs and improve system operating efficiency. This paper proposes an RSU deployment mechanism based on the popularity of road intersections, which uses three traffic parameters, vehicle contact time, intersection connectivity, and intersection coverage capacity, as the main reference indicators. Meanwhile, an improved hotspot discovery algorithm (IHDA) is utilized to introduce inhibition distance during deployment to reduce interference between RSUs. The simulation results demonstrate that, compared with the existing typical deployment methods, this program can improve the coverage time ratio and the contacts of vehicles per trip.

scholarly journals Towards Exploration of Social in Social Internet of Vehicles Using an Agent-Based Simulation

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Kashif Zia ◽  
Arshad Muhammad ◽  
Abbas Khalid ◽  
Ahmad Din ◽  
Alois Ferscha
Keyword(s):  
Context Awareness ◽  
Data Science ◽  
Social Ties ◽  
Social Aspects ◽  
Internet Of Vehicles ◽  
Agent Based ◽  
Smart Vehicles ◽  
The Social ◽  
Simulation Results ◽  
Data Constraints

Internet of Vehicles (IoV) is turning out to be one of the first impressive examples of Internet of Things (IoT). In IoV, the factors of connectivity and interaction/information dispersion are equally important as sensing/actuating, context-awareness, services provisioning, etc. However, most of the researches related to connectivity and interaction are constrained to physics of signaling and data science (semantics/contents), respectively. Very rapidly, the meanings of these factors are changing due to evolution of technologies from physical to social domain. For example, Social IoV (SIoV) is a term used to represent when vehicles build and manage their own social network. Hence, in addition to physical aspects, the social aspects of connectivity and information dispersion towards these systems of future should also be researched, a domain so far ignored in this particular context. In this paper, an agent-based model of information sharing (for context-based recommendations) of a hypothetical population of smart vehicles is presented. Some important hypotheses are tested under reasonable connectivity and data constraints. The simulation results reveal that closure of social ties and its timing impacts the dispersion of novel information (necessary for a recommender system) substantially. It is also observed that as the network evolves due to incremental interactions, the recommendations guaranteeing a fair distribution of vehicles across equally good competitors is not possible.

scholarly journals Simulation for Optimizing the Hybrid System of Solar Power Plant (SPP) and Diesel Power Plant (DPP) at Balang Lompo Island

2020 ◽  
Vol 7 (1) ◽  
pp. 62
Author(s):  
A.M. Shiddiq Yunus ◽  
Makmur Saini ◽  
M. Syaiful Fuad ◽  
Isradianto Isradianto
Keyword(s):  
Power Plant ◽  
Solar Power ◽  
Cost Savings ◽  
Solar Power Plant ◽  
Collection Data ◽  
Preliminary Study ◽  
Simulation Results ◽  
Fuel Costs ◽  
Generating System ◽  
System Operating

Balang lompo Island is supplied by Diesel Power Plant (DPP) and Solar Power Plant (SPP), in the operation of SPP it is considered not optimal due to the amount of solar panel capacity of 200 kWp while MPPT capacity of 120 kW and inverter capacity of 100 kVA, with these conditions the research was carried out with the aim of optimizing the generating system on Balang Lompo Island. The optimization of the generating system is conducted by simulation using Homer Legacy Beta software. By entering several important parameters such as technical, economic, and environmental factors therefore, the simulation results obtained in the form of the most optimal system operating patterns represented by one of the smallest net present cost (NPC) parameters, and also the recommended operating hours between DPP and SPP. The research method employed are the preliminary study research, identification and formulation of problems, data collection, data processing using Homer Legacy v2.81 Beta software, and analysis of the simulation results. In this study there are two conditions are compared, the first condition is the existing condition with an MPPT capacity of 120 kW and an inverter capacity of 100 kVA and the second condition is the addition of MPPT capacity to 200 kW and an inverter capacity of 200 kVA. Based on the results, it can be concluded that with the addition of capacity in SPP equipment, namely MPPT capacity to 200 kW and inverter capacity to 200 kVA, it is proven to be able to save NPC costs, O&M costs, fuel costs, reduction in DPP operating hours and DPP fuel consumption. With an NPC value of US $ 3,362,929 (IDR. 48,957,520,382), with the implementation of this system the NPC cost savings could reach US $ 197,161 (IDR. 2,870,269,838) during the 25-year operating period, and savings in US fuel/HSD consumption costs $ 23,936 (IDR. 348,460,288) per year.

scholarly journals Location privacy preserving scheme based on dynamic pseudonym swap zone for Internet of Vehicles

2019 ◽  
Vol 15 (7) ◽  
pp. 155014771986550 ◽  
Author(s):  
Min Yang ◽  
Yong Feng ◽  
Xiaodong Fu ◽  
Qian Qian
Keyword(s):  
Location Privacy ◽  
Privacy Preserving ◽  
Communication Cost ◽  
Vehicle Dynamic ◽  
Internet Of Vehicles ◽  
On Demand ◽  
Vehicle Density ◽  
Simulation Results

In Internet of Vehicles, establishing swap zones in which vehicles can exchange pseudonyms is an effective method to enhance vehicles’ location privacy. In this article, we propose a new scheme based on dynamic pseudonym swap zone, to protect location privacy of vehicles. For each vehicle, dynamic pseudonym swap zone allows it dynamically to establish a temporary pseudonym swap zone on demand to exchange the pseudonym with another random vehicle in the just formed zone. This randomness of choosing the pseudonym exchanging vehicles prevents dynamic pseudonym swap zone from the secure risk that the information of exchanging participants exposes to their group manager in some existing works in which each pair of pseudonym exchanging participants is assigned by the manager. To avoid the high communication and computation overhead of frequently swapping pseudonyms, dynamic pseudonym swap zone adopts a combination of swap and update to achieve the unlinkability between new and previous pseudonyms. Moreover, dynamic pseudonym swap zone can self-adapt to the varying surroundings to reduce the communication cost of forming pseudonym swap zones in high vehicle density areas. The analysis and simulation results show that our proposed dynamic pseudonym swap zone is a high location privacy preserving, secure, auditable scheme.

scholarly journals Semi-analytical range and endurance computation of battery-powered multi-copter unmanned aerial systems under steady wind conditions

2019 ◽  
Vol 233 (14) ◽  
pp. 5282-5294
Author(s):  
Ameya Godbole ◽  
Kamesh Subbarao ◽  
Atilla Dogan ◽  
Brian Huff
Keyword(s):  
Analytical Approach ◽  
Close Agreement ◽  
Outdoor Environment ◽  
Unmanned Aerial Systems ◽  
Unmanned Aerial System ◽  
Analytical Range ◽  
Simulation Results ◽  
Aerial Systems ◽  
Analytical Approaches ◽  
System Operating

The range and endurance of an unmanned aerial system operating nominally in an outdoor environment depends upon the available power and environmental factors like the magnitude and direction of the prevailing wind. This paper focuses on the development of semi-analytical approaches to computing the range and endurance of battery-powered multi-copter unmanned aerial system under varying wind conditions. The analytically derived range is verified against a comprehensive unmanned aerial system simulation which includes experimentally validated elements such as the propulsion system and electric power consumption modules. It is shown that the analytical approach yields the range maps in close agreement with the simulation results.

Simulation Study of System Operating Efficiency of EV Charging Stations with Different Power Supply Topologies

2014 ◽  
Vol 494-495 ◽  
pp. 1500-1508 ◽  
Author(s):  
Yu Huang ◽  
Jing Jing Ye ◽  
Xin Du ◽  
Li Yong Niu
Keyword(s):  
Power Supply ◽  
Simulation Analysis ◽  
Power Conversion ◽  
Operating Efficiency ◽  
Power Cable ◽  
Charging Station ◽  
Comparative Results ◽  
Charging Stations ◽  
Ev Charging ◽  
System Operating

This paper discusses the effect of power supply and power conversion structure on system operating efficiency of an EV charging station. The system efficiencies of two EV charging stations (ECS), AC bus (ABECS) and DC bus (DBECS), are evaluated by a simulation analysis. The effect of power conversion structure is investigated by an analytical model constructed in MATLAB. Based on the battery characteristics, we build an energy loss model of various components of EV charging stations with different topologies including distribution transformer, power cable and charger with different conversion structure. Using this model, the system operation efficiencies of charging stations equipped with an AC or a DC supply bus are compared. The comparative results for both power supplies, acquired by the appropriate MATLAB/Simulink simulations, are presented.

The Laser Scanning System Calibrations in Unmanned Yard

2013 ◽  
Vol 718-720 ◽  
pp. 1585-1590 ◽  
Author(s):  
Shi Hui Zhang ◽  
Fang Wen Zhu ◽  
Zheng Peng Yuan ◽  
Jin Bo Chen
Keyword(s):  
3D Reconstruction ◽  
Laser Scanning ◽  
Operating Efficiency ◽  
Scanning System ◽  
Laser Parameter ◽  
Parameter Calibration ◽  
Calibration Algorithm ◽  
Laser Scanning System ◽  
System Operating

In an unmanned yard, some parameters of the system would change due to equipments wear and deformed. These changes resulted in the 3D reconstruction parameters changing. The inaccuracy of the 3D reconstruction parameters decreases the system operating efficiency and result in the waste of resources and energy. In this paper, a rapid laser parameter calibration algorithm was discussed, the experiment result in a real unmanned yard show this method is feasible.

Research of Intelligent Vehicle Internet of Things Based on Anti-Worm Model

2013 ◽  
Vol 347-350 ◽  
pp. 3877-3880
Author(s):  
Yan Qi ◽  
Qian Peng Han ◽  
Yong Dong Zhang
Keyword(s):  
Internet Of Things ◽  
Real Time ◽  
Theoretical Basis ◽  
Divide And Conquer ◽  
Intelligent Vehicle ◽  
Effective Measure ◽  
Internet Of Vehicles ◽  
Detection Strategy ◽  
Simulation Results ◽  
Worm Model

ntelligent transport system that based on Internet of Vehicles is regarded as effective measure to guarantee the safety of highway transport. Anti-worm model in vehicular IOT is constructed based on divide-and-conquer with velocity and the drive velocity of vehicle node as the conversion condition between active and passive anti-worms in hybrid anti-worms. Implement this model on the design of Internet of Vehicles terminal, the simulation results show that this model can make the performance of network improved in highway environment regardless of complex road conditions domain and provides a theoretical basis for programming real-time detection strategy and preventing worm destructive epidemics in vehicular Internet of things.

scholarly journals Analysis and design of a class E current-driven rectifier for 1 MHz wireless power transfer system

2019 ◽  
Vol 70 (1) ◽  
pp. 58-63
Author(s):  
Krystian Rybicki ◽  
Rafał M. Wojciechowski
Keyword(s):  
Power Transmission ◽  
Transmission System ◽  
Design Stage ◽  
Operating Efficiency ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Power Transmission System ◽  
Simulation Results ◽  
Selection Of ◽  
Class E

Abstract The paper presents the design of the class E current-driven rectifier, which is intended for operation in the wireless power transmission system, as well as the concept of selection of the rectifier parameters which allows the operation with high efficiency. The selection of the rectifier parameters was performed with a view to the use of the existing wireless power transmission (WPT) system. The procedure for selection of the rectifier parameters has been proposed to enable its optimal use in reference to the system parameters given already at the design stage, ie; load resistance and the coil magnetic coupling factor (distance between coils). In order to verify the correctness of the procedure for selection of the parameters, the numerical model of the system which consists of the class E resonance inverter, the air-core transformer and the designed E class rectifier system was developed in the LTspice environment. Simulation tests and analysis of the obtained calculation results were performed. Based on the simulation results, a prototype of the class E rectifier system which cooperates with the existing wireless power transmission system supplied from the class E inverter was developed. The obtained results of laboratory measurements demonstrated a high compliance with the simulation results, thus, confirming the correctness of the proposed design procedure and the high operating efficiency of the rectifier system.

Sign in / Sign up

Export Citation Format

Share Document