基于STC89C52单片机的声光控毕业设计Protuse仿真
上传时间: 2013-11-23
上传用户:onewq
TTL电平和CMOS电平总结
上传时间: 2013-10-09
上传用户:Zxcvbnm
基于单片机的智能光控路灯的设计基于单片机的智能光控路灯的设计
上传时间: 2013-10-27
上传用户:lhc9102
带触摸屏或鼠标的HMI智能终端,为了减少用户的代码量,简化编程,可以通过预先制作配置文件(即触摸界面切换BIN文件)到HMI中,并把HMI配置为触控界面自动切换模式来实现触控界面的用户“免干预”。
上传时间: 2013-10-20
上传用户:极客
摘要:中国大洋协会(coM卫A)多金属结核中试采矿系统的测控实验系统为采矿系统的虚拟研究提 供了一个高性能的模拟实验平台。本文以采用AT9054434型AVR单片机设计开发的模拟集矿机精确 测控系统为例,介绍了AVR单片机的特点和工作机理,详细阐述了基于AVR单片机的精确驱动控制 系统的设计与开发方法,具有一定的参考和推广价值。
上传时间: 2013-11-30
上传用户:破晓sunshine
在航电系统维护过程中,为解决定位故障的效率和降低维修成本等问题,提出了基于ICD(Interface Control Document,接口控制文件)的1553B总线的信息监控系统模型。该系统运用数据采集卡对总线中传输的信号有无失真、偏差等电气特性进行检测,并使用1553B通讯卡通过测控软件LabWindows/CVI编程与ICD数据库的动态链接,实现总线信息的解析和故障的判断。与传统的维护过程相比,这种模型能够从信号的电气特性以及信息的解析等全方位的去检测判断故障的来源,并且能够广泛在其他1553B总线系统内扩展应用。验证表明该监控系统可以对总线信息进行快速有效地监测分析,能满足应用需求。 Abstract: In the process of avionics system maintenance, to solve the problems such as improving the efficiency of fast orientation to troubles and reducing maintenance cost, system of 1553B bus information monitor model based on ICD was proposed. The system observed whether the data which transmitted on the bus appear distortion and deviation by using data acquisition card. And using 1553B communication card programming of the measure software LabWindows/CVI and the dynamic linking of ICD database, message analysis and fault estimation could be realized. Compared with traditional maintenance, this model can all-dimensionally detect and analyze the source of faults from both electrical characteristics of the signal and message analysis, and it can be widely applied in the other 1553B system. Experiment shown that this monitor system can effectively detect and analyze the bus message and can meet the application requirements.
上传时间: 2013-11-23
上传用户:18752787361
提出了一种可根据环境光强、红外和温度变化而实现自动开关、调节亮度的LED照明系统的设计方案。采用单片机C8051F020为系统控制核心,设计了由硅光电池和集成运放组成的光强传感器,选用热释电模块作为红外无线感应器,采用DS18B20为温度传感器,还利用液晶实现了工作信息显示。实验结果表明,系统在光强大于2 170 lx或温度高于82.5 ℃时能自动关断,当光强小于1 040 lx或温度低于49.3 ℃时能自动开启;当光强在1 000~2 000 lx变化时,LED亮度能自动调节,以维持环境照度基本稳定。
上传时间: 2013-10-10
上传用户:xaijhqx
第一章 概述 第二章 微型测控系统常用器件 第三章 工业控制计算技术要点 第四章 单片机存储系统扩展 第五章 标准总线和串行通信 第六章微型机应用系统常用可编程接口芯片 ............................
上传时间: 2014-01-09
上传用户:dbs012280
以C8051F020为核心处理器,设计无线传感器网络数据采集系统。系统采用SZ05-ADV型无线通讯模块组建Zigbee无线网络,结合嵌入式系统的软硬件技术,完成终端节点的8路传感器信号的数据采集。现场8路信号通过前端处理后,分别送入C8051F020的12位A/D转换器进行转换。经过精确处理、存储后的现场数据,通过Zigbee无线网络传送到上位机,系统可达到汽车试验中无线测试的目的。 Abstract: This paper designs a wireless sensor network system for data acquisition with C8051F020 as core processors.The system used SZ05-ADV wireless communication module,set up a Zigbee wireless network, combined with hardware and software technologies of embedded systems,completed the end-node 8-locale sensor signal data acquisition.Eight locale signals were sent separately into the 12-bit ADC of C8051F020 for conversion through front treatment.After accurate processing and storage,the locale data was transmitted to the host computer through Zigbee wireless.The system achieves the purpose of wireless testing in vehicle trial.
标签: C8051F020 Zigbee 汽车测试 系统设计
上传时间: 2013-11-23
上传用户:dsgkjgkjg
首先研究CAN总线和SAE J1939协议,提出一种基于MC9S12HZ256微控制器的总线式汽车数字仪表解决方案。详细介绍SAE J1939协议的报文帧格式及应用层协议中发动机相关参数的定义,以及步进电机及其驱动和车速信号的处理方法。该数字仪表系统硬件平台由微处理器和信号采集和信息处理及显示等模块组成。软件设计部分编程实现了对CAN总线和各传感器数据的读取、处理。该系统能够实时反映车辆工况。 Abstract: In this paper,CAN bus and SAE J1939protocol are researched,and a vehicle digital instrument solution based on MC9S12HZ256MCU is proposed.The message frame format and some engine-related parameters’definition in SAE J1939application layer protocol are introduced in detail.Stepper motor and its driver,the methods of speed signal process-ing are also introduced.The hardware platform of vehicle digital instrument is composed by MCU,signal acquisition mod-ule,and signal processing and displaying module.Data receiving and processing from CAN bus and sensors are accom-plished by programming,and vehicle condition can be reflected in real-time.
上传时间: 2013-10-20
上传用户:huannan88