C#+SQL Server2005实现公用自行车管理系统

使用C#语言编写的公用自行车管理系统,以SQL Server2005作为后台数据库,实现了对车辆信息的添加、删除以及车辆的借还等功能,同时能够对系统的管理员账户和学生用户信息进行管理.     

基于大数据技术的电动自行车的安全治理研究

电动自行车作为一种节能、环保、廉价的交通工具受到居民们的喜爱,在短时间内几乎已经取代了人力自行车,并且实现大范围普及,但是国家还没有给出严格意义上的定义和分类。为了实现对电动自行车的有效监管与安全治理,本文在大数据、物联网、智能技术的基础上提出了一种电动自行车专用智能终端,并提出一种相对应的电动自行车综合性智慧管理平台,运用先进的科学技术对电动自行车实现有效监管与安全治理。     

公用机房管理系统学生端的设计与实现

利用计算机技术、网络技术和数据库技术,开发公用机房管理系统,实现自动化和规范化管理,提高机房管理的效率。重点分析与设计了学生端软件,并实现了学生端的安全和远程控制命令的执行。     

公用工程系统在炼厂的实施和应用

该文简要介绍了公用工程系统的系统结构和功能特点,以及在炼厂的实施应用情况。公用工程系统在炼厂的实施应用,有利于实现水、电、气、风等能源生产方案的优化调整,并做到生产成本核算科学化和有效控制能源流等,从而降低企业生产成本、指导节能减排,提高企业经济效益,实现企业的生产精细化管理。     

计算机开放实验室及其综合管理系统

计算机开放实验室是大型公用机房管理的新思路,它的全自动化管理模式使得建立高效率的大型公用机房成为可能。该文介绍了计算机开放实验室的特点、功能与结构,并着重介绍了计算机开放实验室综合管理系统的设计、各子系统的功能以及系统实现的关键技术。     

计算机开放机房管理系统的设计

本文针对当前大学计算机公用机房在运行和管理中存在的问题,提出了一种机房管理系统设计思路,分析了系统模型的总体结构,阐述了实现机房信息化管理的设计思路、方法以及主要模块设计与实现,有效提高计算机实验室管理水平。     

公用机房计费管理的设计

本文论述了学校公用开放机房使用机卡进行自动收费管理的设计及实现,给出了系统的软硬件平台、数据库及机卡计费管理系统本身实现安全可靠运行的一些措施和方法。     

PowerBuilder中数据库应用系统公用框架包的设计

介绍了作者根据自己运用PowerBuilder进行开发的经验,而设计的用于数据库管理系统的公用框架包Public的设计原理和设计思想,简要叙述了该框架包的功能的设计框图。应用公用框架包将实现数据库管理的高效开发。     

虚拟停车电子围栏设计研究

随着共享单车企业市场竞争的日益激烈,共享单车越发普及,市民使用单车后乱停乱放现象亦日益严重,进而在众多城市中出现了共享单车引发的诸多管理问题。针对市民使用共享单车后乱停乱放的问题,本项目提出利用百度电子地图平台,通过百度地图API技术实现在电子地图上对位置区域的自由划分形成虚拟电子围栏,并结合GPS技术使每一台共享单车形成一个单独的地理位置坐标。当该自行车坐标进入划定的允许停放的虚拟电子围栏后代表该辆自行车允许在该区域内停放,当该地理坐标未进入停放区域则不允许该辆自行车上锁。从而实现了强制市民将自行车停放于规定的区域内,政府管理部门可通过该方法实现共享单车的规范管理,减轻城市管理工作量,美化城市环境等作用。     

自己组装电动自行车要点

电动自行车发展到现在,已经不再是少数企业和专家的专利了。和电脑一样,任何人只要懂电气技术,就可以利用现有的零配件自己组装出一台性能不错的电动自行车出来。电动自行车与普通自行车的区别在于:电动自行车拥有电池、电机、控制器、充电器等动力部件。过去,实现电机传动费力,又不能保证质量,这一问题由于轮毂电机的发明已经得到圆满解决,现在组装一台电动自行车几乎不需任何高深的技术知识和复杂的工程设计就可以轻松实现。     

公共试题库管理系统设计与实现

通过对现代试题库管理系统分析,设计了一个公共试题库管理系统,并对此系统的主要功能试题库管理模块进行了设计与实现.     

A bicycle model for education in multibody dynamics and real-time interactive simulation

This paper describes the use of a bicycle model to teach multibody dynamics. The bicycle motion equations are first obtained as a DAE system written in terms of dependent coordinates that are subject to holonomic and non-holonomic constraints. The equations are obtained using symbolic computation. The DAE system is transformed to an ODE system written in terms of a minimum set of independent coordinates using the generalised coordinates partitioning method. This step is taken using numerical computation. The ODE system is then numerically linearised around the upright position and eigenvalue analysis of the resulting system is performed. The frequencies and modes of the bicycle are obtained as a function of the forward velocity which is used as continuation parameter. The resulting frequencies and modes are compared with experimental results. Finally, the non-linear equations of the bicycle are used to create an interactive real-time simulator using Matlab-Simulink. A series of issues on controlling the bicycle are discussed. The entire paper is focussed on teaching engineering students the practical application of analytical and computational mechanics using a model that being simple is familiar and attractive to them.     

Validation of multibody modeling and simulation using an instrumented bicycle: from the computer to the road

This paper describes the use of an instrumented bicycle and its computational model for teaching multibody dynamics. The presented approach employs the Whipple model for the kinematic and inverse dynamic simulation of a bicycle ride using as an input three generalized coordinates registered with digital sensors. During the experimental phase, students ride the instrumented bicycle to collect the necessary sensor data. The kinematic and inverse dynamic simulations based on these signals provide a full picture of the motion of the system in different positions and at a range of velocities and accelerations. In addition, they estimate the traction, control, and tire-to-road contact forces during the ride. To validate the simulated results, the simulated velocity and accelerations are compared with the data acquired with an inertial measurement unit (IMU) installed on the bicycle. The paper describes the experimental setup of the instrumented bicycle, enabling readers to build the very same system for their own educational use. The instrumented bicycle system is based on open-source software and as much as possible on open hardware.     

基于CAN总线的电动自行车充电监控系统设计

本文对现有住宅小区电动自行车充电的收费管理模式进行分析,针对其存在的问题,提出了一种基于CAN总线的电动自行车充电监控系统设计。该系统主要由主控计算机、CAN总线适配卡和多个智能充电节点组成;管理员可以通过上位机操作,远程监控各充电节点,实现电量计算、通断控制以及用户数据信息存储等功能。     

A hub location inventory model for bicycle sharing system design: Formulation and solution

This study addresses a strategic design problem for bicycle sharing systems incorporating bicycle stock considerations. The problem is formulated as a hub location inventory model. The key design decisions considered are: the number and locations of bicycle stations in the system, the creation of bicycle lanes between bicycle stations, the selection of paths of users between origins and destinations, and the inventory levels of sharing bicycles to be held at the bicycle stations. The design decisions are made with consideration for both total cost and service levels (measured both by the availability rate for rental requests at the pick-up rental stations and coverage of the origins and destinations). The optimal design of this system requires an integrated view of the travel costs of users, bicycle inventory costs and facility costs of bicycle stations and bicycle lanes as well as service levels. The purpose of this study is to create a formal model that provides such an integrated view, and to develop methods for obtaining solutions for the design variables in practical situations. The complexity of the problem precludes the exact solution of the optimization problem for instances of realistic size, and so we propose a heuristic method for efficiently finding near-optimal solutions. In the test problem for which enumeration is possible, the heuristic solution is within 2% optimal. Finally, a numerical example is created to illustrate the model and proposed solution algorithm.     

Development of Racing Bicycle Position Control Device and Pedaling Exercise Analysis Software with Web-Based Data Management Function for Improving Cycling Technique

To maximize the competitive ability of cyclist, many researches have been studied how to fit the setting of bicycle components against cyclist’s physical properties. At present, neither definitive policy nor effective method to set bicycle components appropriate for each cyclist have been established, so this study aims to develop a system that can assist to search an efficient setting of bicycle components for cyclist’s physical properties. The first feature of this system is to change the bicycle setting during pedaling exercise, and the second is to make the exercise data obtained by experiments sharable with researchers in the study field of cycling. The proposed system is developed by improving our previous experimental device and newly constructing an analysis software program with web-based data management function. The experimental device can automatically control the positions of both a saddle and a handle during pedaling exercise and measure multi-channel surface electromyography (SEMG) simultaneously. The analysis software program is constructed with Microsoft SQL Server to efficiently manage the huge volume of SEMG data, and additionally, web server technologies, Apache and PHP, are employed in order to be available through the Internet, so researchers can easily use all experimental data even if they live in different locations. The details of our experimental system are shown in this paper, and the summary of our findings through the experiments is also described.     

无人值守自行车存车系统设计与实现

为提高自行车存放的安全,设计一套无人值守自行车存放系统.该系统利用RS-485总线进行通信,结合键盘管理芯片、点阵式LCD、微型打印机、电磁锁以及对射式红外线收发器等部件,实现了存车、取车、防盗、报警、特殊事件处理功能,具有安全可靠、使用方便、施工简单等特点.     

高校计算机公共机房建设及管理

针对目前高校计算机实验室建设的实际情况。从不同角度提出高校计算机机房建设方案。并从多方面探讨了如何管理维护高校机房的方法。提出了提高计算机机房管理维护效率的方法。     

基于WSN的小区自行车防盗系统的设计

针对小区管理的需求,将无线传感器网络引入到小区自行车防盗系统中.以ATmega128L单片机为核心扩展了断线检测模块和以CC1000芯片为基础的无线通信模块,设计了无线传感器网络的电子锁节点和Sink节点.规划了无线传感器网络拓扑,设计了具有较高稳定性的简单无线通信协议,基于监控主机以多线程的方式实现了防盗监控软件.实验验证了方案的可行性,仿真验证了多节点情况下,通信协议的稳定性.     

无机械辅助结构自行车机器人控制仿真及实现

为实现自行车机器人的平稳直线行驶,论证了无机械辅助结构、仅靠调整车把维持自平衡的后驱自行车机器人动力学建模、姿态控制、系统仿真及实物样机实验.针对具有典型对称性欠驱动非完整约束的自行车机器人系统难于实现平衡控制问题,首先基于拉格朗日方法分析系统力学机理,建立简化动力学模型.然后基于部分反馈线性化原理,对车体横滚角与转把力矩的欠驱动子系统进行线性化处理及模糊自适应控制.仿真及实验结果表明,有效地实现了自行车机器人直线运动自平衡控制,为进一步开展自行车机器人以及其他欠驱动系统平衡运动控制奠定理论基础.