基于树莓派的无线遥控移动机器人设计及运动控制

本文设计并开发了一种基于树莓派的无线遥控移动机器人,机器人使用手机作为控制端,控制系统以树莓派作为核心控制器,采用Python语言进行程序开发,机器人拥有小车底盘、电机驱动、机械臂、舵机驱动和超声波测距等多个功能模块。系统通过Wi-Fi实现了机器人与手机之间的信息交互,操作者可以无线远程遥控来实现机器人的移动、避障和物体抓取。     

基于Arduino的无线遥控小车的设计与实现

为了实现对危险或者不易到达地区的环境监控和信息采集,设计实现了一款基于Arduino的无线遥控小车。该系统主要分为无线控制和视频监控两个模块,在设计过程中采用Arduino UNO REV3开发板作为核心控制单元,向各个模块发出不同的指令,实现前进、后退、转弯、停止等基本功能。其中无线控制模块利用直流电机作为动力驱动,通过控制电机的转速和转向来控制小车的运动;视频监控模块以视频信息采集设备为主,通过路由器模块将采集的信息发送至控制端。经测试表明,该小车实现了预期功能,达到了设计目的。     

基于fischertechnik模型的可变距探测机器人

介绍了一种采用fishertechnik模型组装的轮式机器人,给出了轮式机器人的设计方案,并采用STC90C51单片机作为控制芯片,详细说明了机器人的六个组成部分:主体部件、轮距变化机构、驱动机构、舵机云台机构、无线遥控模块、电源模块。给出了机器人的电机和舵机的软件控制思路。     

基于单片机的旋转式LED广告屏设计

基于单片机的旋转式LED广告屏主要由主控芯片外围电路、电源模块、无线通信模块、数据存储模块、显示屏驱动控制模块、直流电机驱动控制模块、串口通信模块组成。采用STC12C5616AD作为主控芯片,两列发光二极管对称地排列在圆周上作为显示屏。通过无线通信模块接收无线射频信号,由显示屏驱动控制模块驱动发光二极管工作。本设计具有低成本、高亮度、性能稳定的特点,用户还可自动遥控切换画面,显示屏信息录入也非常方便。     

基于STM32的无线重力感应遥控系统设计

基于STM32控制器设计了一款无线重力感应遥控系统,该系统由遥控端与运动小车组成。遥控端利用倾角传感器ADXL345检测遥控端的倾角信息,然后传给STM32控制器进行处理并转换为相应指令,通过NRF24L01模块发送给运动小车。运动小车接收到指令之后,通过NUCLEO-F411控制电机驱动模块L298N驱动小车产生相应动作。所设计的无线重力感应系统具有简单、直观、易操作等特点,具有广泛的应用前景。     

基于nRF24L01的无线电子记分系统设计

无线记分系统的设计分为发送端和接收端两部分。发送端控制程序通过RS232串口通信发送比分数据到单片机控制的下位机,并经由nRF24L01无线射频模块天线进行数据发送;接收端通过单片机控制的无线射频模块天线接收数据并使用8段LED数码管显示记分情况。系统的整体设计包括硬件电路、软件程序设计;发送端上位机界面程序采用VB6.0设计,发送端下位机和接收端单片机程序采用C51。给出了软件设计流程图、硬件实物运行现场图。测试表明,系统运行性能良好。     

一种双模控制的自主跟随机器人系统设计

为解决非视觉跟随方式的不稳定性,设计了一种基于机器视觉传感器的自主跟随机器人系统。系统具备自主跟随和手动遥控两种模式。采用Processing软件编写手机端应用程序(APP),通过Wi Fi模块向系统发送模式选择命令。在自主跟随模式下,通过开源机器视觉模块Open Mv采集图像信息,采用Micro Python编程实现对跟随标记的识别定位,获取定位坐标,建立向量空间,并调用差速跟随算法使机器人自主跟随标记,以完成自适应移动。在遥控模式下,通过2.4 GHz无线射频模块n RF24L01发送指令,实现了对无法识别目标等特殊环境下的机器人的控制。通过系统硬件设计和软件编程,搭建了一台系统模型机。采用April Tags码作为跟随标记,对系统功能进行了验证。该系统实现了对特定目标的自主跟随以及手动遥控跟随;无线通信稳定,实现了双模控制,满足了预期要求。该系统对跟随机器人的发展起到了有力的推动作用。     

一种无线遥控模块在竞赛机器人中的应用

针对比赛中机器人控制不够灵活、控制范围受限等问题,本文根据遥控接收范围、收发数据的稳定性与灵敏度,使用一种无线遥控接收模块RXC6;在机器人的控制系统上加装此模块并对其进行编码使用,机器人通过与其他传感器间的配合,实现实时接收命令。本文对两种不同的控制系统进行对比实验,结果表明:该无线遥控模块接收效率高,控制效果明显。     

基于蓝牙控制的智能小车设计

本文研究蓝牙遥控的多功能智能小车,采用无线蓝牙技术对各种智能模块进行控制,用户可以通过手机客户 端直接对小车进行实时操控。本系统由C51 单片机为主控芯片,L298N 为电机驱动芯片、HC-06 蓝牙无线模块、1602 液晶显 示模块、超声波模块等电路组成。基于手机平台,借助于蓝牙技术,最终实现为一个完整的多功能智能小车系统,实现了智能 小车的蓝牙无线遥控、自动壁障等功能。     

基于单片机的智能清洁机器人

本文智能清洁机器人是基于单片机核心的车载机器人,主要由传感器,硬件电路和智能控制端组成。主要传感器包括红外对管,红外开关,遥控器,机械手,红外接收头。主要电路有电击驱动,红外驱动和232串口电路。控制端有红外遥控和VI上位机控制两部分。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。