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Design of Electric Bicycle Controller  [cached]
Jie Cong
Computer and Information Science , 2009, DOI: 10.5539/cis.v2n2p126
Abstract: This article introduces a sort of intelligent brushless DC motor driver and its concrete application in electric bicycle, and discusses the hardware and software design scheme of the controller, and realizes the speed control, over-current protection and battery under-voltage protection of the brushless DC motor. And the experiment result indicates that the control effect is good, and it could fulfill the application requirement of electric bicycle.
Design of Controller in Electric Bicycle  [cached]
Zhidong Zhang,Jingfeng Shen,Baohui Li
Modern Applied Science , 2011, DOI: 10.5539/mas.v5n5p125
Abstract: Base on PIC16F72, a design of brushless DC motor controller strategy applied to the electric bicycle control system was presented in the paper. Through analyzed some possible problems when electric bicycle running daily. Function of over-current protection, under-voltage protection and helping were accomplished. Schematic diagrams of each function and drive circuit were given in the paper, the controller was debugged in rated voltage 36V and power rating 250W brushless DC motor, experiment turned out controller has better dynamic characteristics and ran steadily.
Bicycle cycles and mobility patterns - Exploring and characterizing data from a community bicycle program  [PDF]
Andreas Kaltenbrunner,Rodrigo Meza,Jens Grivolla,Joan Codina,Rafael Banchs
Computer Science , 2008,
Abstract: This paper provides an analysis of human mobility data in an urban area using the amount of available bikes in the stations of the community bicycle program Bicing in Barcelona. The data was obtained by periodic mining of a KML-file accessible through the Bicing website. Although in principle very noisy, after some preprocessing and filtering steps the data allows to detect temporal patterns in mobility as well as identify residential, university, business and leisure areas of the city. The results lead to a proposal for an improvement of the bicing website, including a prediction of the number of available bikes in a certain station within the next minutes/hours. Furthermore a model for identifying the most probable routes between stations is briefly sketched.
The Bicycle – Future’s Solution for an Eco-friendly Urban Transport  [cached]
Cristina Ciovic?,Cristian Florea,Alexandra G?lbeaz?
EIRP Proceedings , 2012,
Abstract: Even though more and more cities across the globe impose restrictive measures regarding theuse of cars and offer instead incentives in order to choose alternative means of transport, they do not slowdown their economic growth, but on the contrary they prove their skills towards providing citizens a betterlife. Under these circumstances, the bicycle appears as a viable solution for most of us, and the publicprograms that support its use have started to develop globally, at European level, and in Romania as well.The current paper wishes to point out the stimulating perspectives brought by the slight increase in thenumber of bicycles sold in our country in recent years towards the future of urban transport.
The Impact of Cost and Network Topology on Urban Mobility: A Study of Public Bicycle Usage in 2 U.S. Cities  [PDF]
Raja Jurdak
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0079396
Abstract: Understanding the drivers of urban mobility is vital for epidemiology, urban planning, and communication networks. Human movements have so far been studied by observing people's positions in a given space and time, though most recent models only implicitly account for expected costs and returns for movements. This paper explores the explicit impact of cost and network topology on mobility dynamics, using data from 2 city-wide public bicycle share systems in the USA. User mobility is characterized through the distribution of trip durations, while network topology is characterized through the pairwise distances between stations and the popularity of stations and routes. Despite significant differences in station density and physical layout between the 2 cities, trip durations follow remarkably similar distributions that exhibit cost sensitive trends around pricing point boundaries, particularly with long-term users of the system. Based on the results, recommendations for dynamic pricing and incentive schemes are provided to positively influence mobility patterns and guide improved planning and management of public bicycle systems to increase uptake.
Analyzing Electric Bicycle Rider’s Unsafe Crossing Behavior Based on Theory of Planned Behavior
Qingyuan Zhang,Guoqiang Zhang,Yuli Qi
Modern Transportation , 2013,
Abstract: Electric bicycle riders, particularly youngsters, are one of the high risk groups of road transportation system. Previous studies were limited to the causes of electric bicycle accident, and failed to explore occurrence mechanism of accidents. For a better understanding of electric bicycle rider’s unsafe crossing behavior, a questionnaire which contains TPB variables such as intention, attitude, subjective norm and perceived behavioral control was made based on the theory of planned behavior (TPB). Electric bicycle rider’s unsafe crossing behavior model was established and tested by using AMOS 20.0 which is statistical software and can verify kinds of measurement model and path analysis model through structural equation modeling (SEM). Confirmatory factor analysis (CFA) and goodness-of-fit test indicates that TPB can well explain rider’s unsafe crossing behavior. The results show that attitude toward unsafe crossing and perceived behavioral control have a positive effect on unsafe crossing intention, while otherwise for. Perceived behavioral control and unsafe crossing intention do contribute to the prediction of unsafe crossing behavior. Available advices on the avoidance of unsafe crossing have been suggested on organizing safety education and training, increasing the traffic safety awareness of riders and strengthening law enforcement strategies.
Reconstruction of Car-Electric Bicycle Side Collision Based on PC-Crash  [PDF]
Shenchao Wang, Yubin Qian, Xianguo Qu
Journal of Transportation Technologies (JTTs) , 2014, DOI: 10.4236/jtts.2014.44032
Abstract: A collision model, an automobile model and a multi-rigid-body model in PC-crash are analyzed. By simulating a side collision accident between a car and an electric bicycle (EB), a method that reproduces the car-electric bicycle side collision accident based on PC-crash is presented according to some important information such as the final position, the contacting location between the cyclist and the car. A result is obtained by comparing with the reproduced result, the deformation of accident vehicle and the surveillance video. The rollover direction and fells-over sliding direction after the collision and the contacting location and wrap motion of cyclist and electric bicycle are fitting in with the real situation better compared with the reconstruction result in PC-crash. Then the responsive-surface method and MONTEKARLO method are used in MATLAB to analyze the uncertainty of the vehicle speed in reproduced scene results. And the range of values of the pre-collision speed is obtained which makes the reproduced result more objective and convincible that could provide the basis of the accident assessment.
Electric Vehicle : The Future Cars  [PDF]
Varun Goyal,T.Karthik Chandra,Puneet Sharma,Himanshu Verma
International Journal on Theoretical and Applied Research in Mechanical Engineering , 2013,
Abstract: A lot is said and heard about global warming and its causes. But still the global situation is the same and nothing much changes. This paper intends to bring, what is considered as the potential savior of the world today, ELECTRIC VEHICLES in the lime light. Provided the EV are known for their non-emission of air pollutants and zero noise workings, EVs may be the first step towards the clean and sophisticated world. This paper aims to discuss the past, the present and the future of the vehicles which seems to be the solution of the desperate situation. This paper also provides brief simulation of electric vehicle in MATLAB environment.
Navigating MazeMap: indoor human mobility, spatio-logical ties and future potential  [PDF]
Gergely Biczok,Santiago Diez Martinez,Thomas Jelle,John Krogstie
Computer Science , 2014,
Abstract: Global navigation systems and location-based services have found their way into our daily lives. Recently, indoor positioning techniques have also been proposed, and there are several live or trial systems already operating. In this paper, we present insights from MazeMap, the first live indoor/outdoor positioning and navigation system deployed at a large university campus in Norway. Our main contribution is a measurement case study; we show the spatial and temporal distribution of MazeMap geo-location and wayfinding requests, construct the aggregated human mobility map of the campus and find strong logical ties between different locations. On one hand, our findings are specific to the venue; on the other hand, the nature of available data and insights coupled with our discussion on potential usage scenarios for indoor positioning and location-based services predict a successful future for these systems and applications.
Organizational and pedagogical conditions of formation of the professional mobility of the future engineer
Natalya Merzlyakova
Koncept : Scientific and Methodological e-magazine , 2013,
Abstract: The article discusses the concept of professional mobility in the context of multicultural education, presented the organizational and pedagogical conditions of formation of professional mobility of the future engineer and ways of implementing the selected conditions.
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