·Stanford&IBM牛人经典之作 - Digital Control of Dynamic SystemsEditorial ReviewsProduct DescriptionThis well-respected, market-leading text discusses the use of digital computers in the real-time co
标签: nbsp Hardcover Digital Control
上传时间: 2013-07-31
上传用户:cuiyashuo
uC/OS II 详细的中文描述。非常适合学习uC/OS II用。
标签: ucos-ii
上传时间: 2013-04-24
上传用户:00.00
针对盘山路存在的转弯盲区,即在转弯时司机无法得知弯路对面是否有车辆通过,设计一种基于C8051F310的山路转弯预防警示系统。该系统利用一阶滤波算法检测山路转弯时是否有车辆通过。运用该算法可增强系统检测的实时性,提高检测机动车辆的灵敏度,同时大大减少环境温度对检测的干扰。试验表明该系统能够正确指示出在山路转弯时是否有车辆通过,目前该系统已安装在盘山路上,可大大减少事故的发生率。 Abstract: Aiming at passing hilly road,there is a turn blind spot.Motormen usually do not know if the passing of vehicles pass the road.So a system of defending accident on hilly road is designed,which is based on MCU C8051F310.The sys-tem uses the first-order filter algorithm to detect whether there are passing vehicles.This algorithm enhances the real-time detection and improves the sensitivity of detection vehicles.Meanwhile,it reduces the detection interference of environmen-tal temperature.The experimental results show that this system can exactly indicate if there are passing vehicles.At present,the system has been successfully applied to hilly road.The system can greatly decrease accident.
上传时间: 2013-10-10
上传用户:归海惜雪
介绍了当前普通标记机控制系统现状及其存在缺点,给出气动标记机及相频修正PWM模式的工作原理。采用ATmega16单片机和USB转换RS232接口器件CH341T实现驱动控制系统与PC的实时通讯,标记控制系统可升级到USB接口。采用基于ATmega16的相频修正PWM替换555振荡电路产生的PWM,可直接通过软件调整PWM信号。使用达林顿三极管TIP122替代直流继电器驱动高频电磁阀,使得电磁阀驱动电路简单,成本低廉。该控制系统已成功应用于气动标记机。 Abstract: In this paper,the actuality and demerit of the common gas marking machine control systems are described.The operation principle of the gas marking machine and the phase and frequency correct PWM of ATmega16is introduced.The real-time communication between the driving control system and PC by CH341T which its function is translated USB to RS232is realized,the control systems is updated grade to USB interface.The PWM signal can be adjustable by software for the555surge circuit was substituted by the phase and frequency.The high frequency electromagnetic value’s driving circuit by DC relay is replaced by TIP122,therefore,the circuit is become simple and the cost cheap.The control systems has been widely used in gas marking machine.
上传时间: 2013-10-18
上传用户:1427796291
为解决输油管道温度压力参数实时监测的问题,设计了以C8051F930单片机作为控制核心的超低功耗输油管道温度压力远程监测系统。现场仪表使用高精度电桥采集数据,通过433 MHz短距离无线通信网络与远程终端RTU进行通信,RTU通过GPRS网络与PC上位机进行远程数据传输,在上位机中实现数据存储和图形化界面显示,从而实现输油管道温度压力参数的实时监测和异常报警。经实验证明,该系统的12位数据采集精度满足设计要求,漏码率小于1%,正常工作时间超过5个月,能实时有效地监测输油管道的温度压力参数,节省大量人工成本,有效预防管道参数异常造成的经济损失和环境污染。 Abstract: In order to solve the problems on real-time monitoring of pipeline temperature and pressure parameters, the ultra-low power remote pipeline temperature and pressure monitoring system was designed by using the single chip processor C8051F930 as the control core. The high-precision electric bridge was used in field instruments for data collection, the 433MHz short-range wireless communication network was used to make communication between field instrument and RTU, the GPRS was used by the RTU to transmit data to the PC host computer, and the data was stored and displayed in the PC host computer, so the real-time monitoring and exception alerts of pipeline temperature and pressure parameters were achieved. The experiment proves that the system of which error rate is less than 1% over five months working with the 12-bit data acquisition accuracy can effectively monitor the pipeline temperature and pressure parameters in real time, it saves a lot of labor costs and effectively prevents environmental pollution and economic losses caused by abnormal channel parameters.
上传时间: 2013-11-07
上传用户:cuibaigao
μC/OS-II调试插件支持μC/OS-II各种设施的观察。包含任务、信号量、互斥量、邮箱、消息队列、标志、定时器和存储区等。同时可自定义刷新时间,动态的刷新各设施的数据显示,还可以将任务信息保存到日志文件中
上传时间: 2014-12-28
上传用户:shen007yue
摘要: 串行传输技术具有更高的传输速率和更低的设计成本, 已成为业界首选, 被广泛应用于高速通信领域。提出了一种新的高速串行传输接口的设计方案, 改进了Aurora 协议数据帧格式定义的弊端, 并采用高速串行收发器Rocket I/O, 实现数据率为2.5 Gbps的高速串行传输。关键词: 高速串行传输; Rocket I/O; Aurora 协议 为促使FPGA 芯片与串行传输技术更好地结合以满足市场需求, Xilinx 公司适时推出了内嵌高速串行收发器RocketI/O 的Virtex II Pro 系列FPGA 和可升级的小型链路层协议———Aurora 协议。Rocket I/O支持从622 Mbps 至3.125 Gbps的全双工传输速率, 还具有8 B/10 B 编解码、时钟生成及恢复等功能, 可以理想地适用于芯片之间或背板的高速串行数据传输。Aurora 协议是为专有上层协议或行业标准的上层协议提供透明接口的第一款串行互连协议, 可用于高速线性通路之间的点到点串行数据传输, 同时其可扩展的带宽, 为系统设计人员提供了所需要的灵活性[4]。但该协议帧格式的定义存在弊端,会导致系统资源的浪费。本文提出的设计方案可以改进Aurora 协议的固有缺陷,提高系统性能, 实现数据率为2.5 Gbps 的高速串行传输, 具有良好的可行性和广阔的应用前景。
上传时间: 2013-11-06
上传用户:smallfish
主要针对货车动态称重系统中大量实时载重数据存取的需求而做的设计。该设计基于ARM9和μC/OS-II相结合的软硬件平台,实现了一种SD卡文件系统。SD卡的接口电路采用SD总线模式连接,软件设计基于嵌入式操作系μC/OS-II ,文件系统的实现参照FAT32规范。实际应用表明,该设计能够满足大量数据的存取效率以及文件管理的技术指标。
上传时间: 2013-11-04
上传用户:rlgl123
针对在51单片机上移植实时操作系统μC/OS-II的目的,以μC/OS-II工作原理为基础,结合51单片机堆栈空间少的情况,采用改变堆栈指针到不同任务寄存器组的方法,通过改变堆栈指针的实验,得出在堆栈空间较少的情况下,也能够实现μC/OS-II在51单片机上的运行的结论。
上传时间: 2013-11-13
上传用户:hz07104032
基于Nios-II设计和实现了支持PSTN网络、Internet网络的双网传真机系统,利用FPGA实现了传真机系统的多个电路模块,包括A/D采样控制逻辑、二值化图像处理模块、MH编码模块、MH译码模块和CIS扫描、TPH打印、电机控制模块。基于μC/OS-II、Niche TCP/IP实现了T30协议通信、非实时网络传真通信、Tiff文件创建、Tiff文件解析模块。使用Altera Cyclone EP1C20开发板实现和验证了整机系统,经过软硬件联调,达到了系统设计指标和功能。
上传时间: 2013-11-13
上传用户:xwd2010