共查询到20条相似文献,搜索用时 62 毫秒
1.
2.
采用单片机AT89S52为硬件核心,设计了数字式皮革收缩温度测试仪,软件采用基于单片机C51语言的单片机测量系统软件和采用Visual C++6.0开发平台编译而成的可视化人机交互计算机测量系统软件。本设计采用霍尔传感器的非接触式检测,从而实现了同时测量四个样品的高效率。 相似文献
3.
4.
单片机具有可靠性高、易扩展和控制功能强等优点,是制作智能玩具小车的首选技术之一.采用STC公司16位单片机STC89C52作为核心控制单元,通过单片机控制传感器模块检测信号,并根据程序控制小车电机运行,实现玩具小车自动循迹、避障、语音播报行驶状态信息、光电显示等功能.实验结果表明,该智能玩具小车设计符合实用要求,具有一定的应用参考价值. 相似文献
5.
6.
7.
叙述了一种基于单片机的多功能参数检测装置的设计与实现过程,采用STC89C52型单片机,设计了参数检测电路、电流电压转换电路、A/D转换接口电路、LCD1602显示电路、按键接口电路等,能够实时对温度、压力、流量、液位等物理量的采集与显示。 相似文献
8.
9.
10.
针对2011年全国大学生电子竞赛C题-智能小车的设计要求,本系统采用飞思卡尔公司MC9S12XS128单片机为主、STC89C52单片机为辅作为智能小车的检测和控制核心。系统采用TCRT5000红外识别技术和超声波探测技术,将检测到的数据传送给单片机,对数据进行相应处理,LCD液晶显示及语音播报。实验证明,系统方案合理,性能良好,能够实现竞赛题目的各项要求。 相似文献
11.
12.
本文对于金属切削这一生产过程中所出现的不稳定问题,利用频率特性法中的奈氏判据,对其进行分析,从而找出消除自激振荡和达到切削过程绝对稳定的条件 相似文献
13.
人体测量学并不是现代社会的产物。有着很长发展历史的人体比例理论中就包含了现代人体测量学的基本内容,尽管其还不够系统完整,但至少说明了在艺术创作中诞生的人体比例理论对现代人体测量学的影响。并随着时间的推移而不断的完善发展,为现代人体测量学的系统提出奠定了坚实的基础。 相似文献
14.
目的:解决在FLASH中导入声音的问题.方法:对FLASH不支持的声音格式采取音频压缩的方法.结果:可成功将压缩后的声音文件导入到FLASH中.结论:在FLASH中使用声音可以使FLASH动画具有良好的动画效果. 相似文献
15.
David Smith 《AI & Society》2003,17(1):1-11
The paper questions the ability of current university systems to respond appropriately to the complex demands of an Information
Economy. It argues that new relationships between creative subjects and technology require new thinking about the nature and
purpose of universities per se. In particular, attention is drawn to the growing involvement of the private sector in higher
education. It is argued that it may not be appropriate to think of the `university of the future' in terms of current public
sector and quasi public sector institutions, but rather in terms of an emporium, based on an international trade in educational
services, and with the `University' as we now understand it occupying the functions of licensing, quality assurance and cultural
custodianship.
Accepted: 25 June 2002 相似文献
16.
熊林 《数字社区&智能家居》2007,3(14):428-429
虚拟化技术是当今服务器技术的一个主流方向,也是一项在计算机领域具有革命性意义的技术.作为x86架构体系下虚拟化技术的领军者-VMware,在技术上有其独到之处.研究VMware的技术与应用,对探知其优秀的技术特点,了解其成熟的产品体系有着现实意义. 相似文献
17.
All titanium alloys are highly reactive in the molten condition and so are usually melted in a water-cooled copper crucible to avoid contamination using processes such as Induction Skull Melting (ISM). These provide only limited superheat which, coupled with the surface turbulence inherent in most conventional mould filling processes, results in entrainment defects such as bubbles in the castings. To overcome these problems, a novel tilt-casting process has been developed in which the mould is attached directly to the ISM crucible holding the melt and the two are then rotated together to achieve a tranquil transfer of the metal into the mould. From the modelling point of view, this process involves complex three-phase flow, heat transfer and solidification. In this paper, the development of a numerical model of the tilt-casting process is presented featuring several novel algorithm developments introduced into a general CFD package (PHYSICA) to model the complex dynamic interaction of the liquid metal and melting atmosphere. These developments relate to the front tracking and heat transfer representations and to a casting-specific adaptation of the turbulence model to account for an advancing solid front. Calculations have been performed for a 0.4 m long turbine blade cast in a titanium aluminide alloy using different mould designs. It is shown that the feeder/basin configuration has a crucial influence on the casting quality. The computational results are validated against actual castings and are used to support an experimental programme. Although fluid flow and heat transfer are inseparable in a casting, the emphasis in this paper will be on the fluid dynamics of mould filling and its influence on cast quality rather than heat transfer and solidification which has been reported elsewhere. 相似文献
18.
本文通过计量工作中用对等网实现多台微机电子秤的互联,实现数据的自动采集和共享,阐述了系统的硬件构成及软件设计,系统具有计量准确、快速、技术先进等特点,可大大提高工作效率,对企业实现计量管理网络化将起到有益的帮助。 相似文献
19.
20.
本文将水的导电特性与集成编、译码技术结合讨论了集成编、译码器MC145026、MC145028在水位数字化检测领域中的应用原理。对该系统的结构、特点和工作原理作了较详细的介绍。 相似文献