应用德国Micronas公司的CDC3207G微控制器开发了一款汽车仪表板系统。详细地介绍了该系统的硬件原理，以及步进电机，音频控制，LCD显示，LED指示灯和报警灯等几个模块的实现方法。应用μC/OS-II实时操作系统开发软件。着重介绍了启动代码的设计和任务的规划。 Abstract: A dashboard system is developed by using CDC3207G microcontroller made by Micronas.The hardware of the sys-tem and the realization of the step motor module,audio module,LCD display and LED indicator and alarm module are ex-plained in detail.The μC/OS-II real-time operating system is used for the software development and the starting code design and the task planning is explained specifically.
上传时间： 2013-10-26
上传用户：x4587
对于传统的跑步机无法联机组网，保存历史数据，实时调试等问题，介绍了一个由多台跑步机通过RS-232串行总线与上位机相连组成的跑步机联网系统。系统采用W77E58作为下位机核心控制器件，它具有双串行通讯端口，其中一个串口用于与变频器通讯，另一个串口则与上位机相连，构成跑步机网络。 Abstract: The traditional running machine can not be connected to a network, saving historical data, real time debug etc.In this paper,a new network system which is composed of running machines connected by a RS-232 communication bus is introduced.In the system,W77E58 is used as a core control unit.W77E58 has two serial ports,one is connected to the inverter and the other is connected to the PC. Thus a network appears.
上传时间： 2014-12-27
上传用户：哇哇哇哇哇
介绍了MPC555与CS8900A扩展以太网的硬件设计图。以NUCLUES PLUS操作系统为基础，介绍了网卡软件驱动程序的编制，给出了以太网协议包嵌入NUCLEUS PLUS操作系统的实现方法。 Abstract: The Ethernet extension hardware design of MPC555 and CS8900A are introduced,and the software driven program based on NUCLEUS PLUS operation system and the technique that Ethernet protocol embedded in NUCLEUS PLUS real operation system are discussed.
上传时间： 2013-10-23
上传用户：xiehao13
对于沥青混凝土摊铺机自动找平控制系统来说，数字式控制系统的研制是目前的一个方向。介绍了一种基于CAN总线的数字式自动找平控制系统。该系统以CAN总线作为通信方式，PWM控制信号通过C8051F040单片机内部PCA可编程计数器阵列产生，并具有结构简单、信号稳定、实时性强、易扩展的特点。通过硬件实现和系统运行达到了比较理想的控制效果，验证了系统的可行性。 Abstract: A digital auto-leveling control system based on CAN Bus is introduced.It uses CAN Bus as the method of communication and creates PWM signals by programmable counter array in C8051F040 microcontroller. The system is simple, stable, real-time and expansive.
上传时间： 2013-10-09
上传用户：ligi201200
为了提高环境参数采集的自动化水平，提升效率，设计了无线传感器系统。本系统运用了传感器技术、通信技术和单片机技术，实现了对环境温度、湿度、光照度以及可燃性气体浓度等参数的检测。它能够实时地与上位机进行无线通信，满足对环境参数实时监测的要求。 Abstract: In order to increase the degree of automation and improve the efficiency of the environment monitoring parameters，the wireless sensor system was developed.Combining with the technique of sensor,automatic monitoring，communication and single-chip microcomputer，it realized real-time monitoring environment parameters,such as temperature，humidity，illumination，concentration of com- bustible gas and so on.At the same time it can communicate with upper personal computers，satisfy the desire of real-time monitoring.
上传时间： 2013-11-22
上传用户：longlong12345678
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
本文介绍了基于AT89C52 单片机的自动水温控制系统的设计及实现过程。该系统具有实时显示、温度测量、温度设定并能根据设定值对环境温度进行调节实现控温的目的以及达到上下限温度报警功能，控制算法是基于数字PID 算法。关键词 ：PID AT89C52 脉宽调制 实时 Abstract ： This article describes AT89C52 single-chip microcomputer-basedautomatic water temperature control system design and implementation process. Thesystem has real-time display, temperature measurement, temperature settings and theenvironment in accordance with the temperature settings adjusted to achieve thepurpose of temperature control and reach the upper and lower limits of temperaturealarm function, the control algorithm is based on the digital PID algorithm.Keyword: PID AT89C52 PWM real time
上传时间： 2013-10-10
上传用户：归海惜雪
STM32全系列处理器具有脚对脚、外设及软件的高度兼容性。这给应用带来很好的灵活性，易于将应用升级到不同存储空间或不同封装的平台。STM32处理器的产品全系列兼容，使得项目之间的代码重用和移植很方便。
上传时间： 2013-11-12
上传用户：zhengzg
NXP Semiconductor designed the LPC2400 microcontrollers around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded Trace. The LPC2400 microcontrollers have 512 kB of on-chip high-speedFlash memory. This Flash memory includes a special 128-bit wide memory interface andaccelerator architecture that enables the CPU to execute sequential instructions fromFlash memory at the maximum 72 MHz system clock rate. This feature is available onlyon the LPC2000 ARM Microcontroller family of products. The LPC2400 can execute both32-bit ARM and 16-bit Thumb instructions. Support for the two Instruction Sets meansEngineers can choose to optimize their application for either performance or code size atthe sub-routine level. When the core executes instructions in Thumb state it can reducecode size by more than 30 % with only a small loss in performance while executinginstructions in ARM state maximizes core performance.
上传时间： 2013-11-15
上传用户：zouxinwang
NEC 16位MCU参考手册 The 78K0R/IC3 is a 16-bit single-chip microcontroller that uses a 78K0R CPU core and incorporates peripheral functions, such as ROM/RAM, a multi-function timer, a multi-function serial interface, an A/D converter, a programmable gain amplifier (PGA), a comparator, a real-time counter, and a watchdog timer.
上传时间： 2013-11-02
上传用户：努力努力再努力
