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  • SAM8系列S3C825A型单片机软件设计

    以S3C825A为例介绍三星公司SAM8系列单片机的内部结构及其软件开发环境,详细描述采用混合编程法来对SAM8系列单片机进行软件设计的一般方法,最后给出用混合编程法对S3C825A进行软件设计的具体应用实例。 Abstract:  With S3C825A,this paper firstly introduces the SAM8 series single-chip microcontrollers and their software development environment, then introduces mixed programming technology for SAM8 series single-chip microcontrollers. In the end, the application program is also given.

    标签: S3C825A SAM8 单片机 软件设计

    上传时间: 2013-12-09

    上传用户:ZZJ886

  • 基于C8051F系列单片机的无线收发电路设计

    基于幅移键控技术ASK(Amplitude-Shift Keying),以C8051F340单片机作为监测终端控制器,C8051F330D单片机作为探测节点控制器,采用半双工的通信方式,通过监控终端和探测节点的无线收发电路,实现数据的双向无线传输。收发电路采用直径为0.8 mm的漆包线自行绕制成圆形空心线圈天线,天线直径为(3.4±0.3)cm。试验表明,探测节点与监测终端的通信距离为24 cm,通过桥接方式,节点收发功率为102 mW时,节点间的通信距离可达20 cm。与传统无线收发模块相比,该无线收发电路在受体积、功耗、成本限制的场合有广阔的应用前景。 Abstract:  Based on ASK technology and with the C8051F340 and C8051F330D MCU as the controller, using half-duplex communication mode, this paper achieves bi-directional data transfer. Transceiver circuit constituted by enameled wire which diameter is 0.8mm and wound into a diameter (3.4±0.3) cm circular hollow coil antenna. Tests show that the communication distance between detection and monitoring of the terminal is 24cm,the distance is up to 20cm between two nodes when using the manner of bridging and the node transceiver power is 102mW. Compared with the conventional wireless transceiver modules, the circuit has wide application prospect in small size, low cost and low power consumption and other characteristics.

    标签: C8051F 单片机 无线收发 电路设计

    上传时间: 2013-10-19

    上传用户:xz85592677

  • 基于单片机与ADS1121的示波器数字多用表实现

    以FPGA为数字逻辑平台,借助继电器矩阵和多路模拟开关,以ADS1211为核心,在单片机控制下,联合实现手持式虚拟/智能存储示波表中数字多用表功能,实验表明该设计是行之有效的。文中介绍了数字多用表的系统结构,重点讨论了其测量电路和智能控制方案。   Abstract:  The digital multimeter in virtual/intellect digital-oscillorgaph was fulfilled, which was controlled by singlechip computer by relay matrix and analogue switches,in which FPGA was used for digital logical plot-form, ADS1211 for kernel chip, the experiment showed the design was feasible, the system struction was present-ed in the paper, measure circuit and intellect control plan of digital multimeter were mainly given.

    标签: 1121 ADS 单片机 示波器

    上传时间: 2013-11-02

    上传用户:瓦力瓦力hong

  • 基于ROM单片机的汉字输入法的实现

    在需要实时大量输入汉字的显示控制处理应用中,利用传统单片机实现显示控制的设计方法是较难实现的。带汉字字库的液晶模块的使用使得小容量ROM单片机的大量汉字信息输入与显示成为可能。提出了针对汉字字库编码的二级索引拼音输入检索方法,介绍了以ST7920作为控制器的带汉字字库的液晶显示模块的接口方法及汉字显示和控制原理,给出了通用计算机键盘在单片机中的串行接口,采用该技术可大大增强单片机的汉字输入功能。为小容量ROM单片机的大批量汉字信息处理提供了一种汉字输入解决方案。 Abstract:  It is difficult to realize Chinese characters input method based on the embedded system by using the traditional design method of display control. It is possible to input and display Chinese characters based on the embedded system with the ROM of small content by using the LCD module with Chinese characters.Chinese characters input method of the quadric index recall in allusion to Chinese characters code is brought forward.The interface and the principle of Chinese characters display control based on the LCD module controlled with the ST7920 is introduced too.The serial interface of the computer keyboard in common use and the embedded system is given at the same time. It can enhance the embedded system function of Chinese characters input by using this technology, and provide a kind of Chinese characters input scheme for the embedded system with small capacity ROM.

    标签: ROM 单片机 汉字输入法

    上传时间: 2013-11-19

    上传用户:jhksyghr

  • 高性价比单片机P89LPC932及其应用

    P89LPC932是Philips公司推出的高性价比单片机,该器件内含增强型CPU,同一工作频率下的速度为标准80C51单片机的6倍。文中介绍了P89LPC932的主要特点,给出了基于P89LPC932的车辆数据采集系统的组成框图。 Abstract:  The Philips P89LPC932 is a high cost-effective 8051-based microcontroller.High performance 2-clock 80C51 CPU providing 6 times the preformance of the standard 80C51.The main characteristic of P89LPC932? and its application in vehicle data collection system are given.

    标签: P89 LPC 932 89

    上传时间: 2013-10-28

    上传用户:gyq

  • 基于MSP430F149的无线环境监测传感器系统设计

    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.

    标签: 430F F149 MSP 430

    上传时间: 2013-11-22

    上传用户:longlong12345678

  • 文字转发音单片处理器WTS701的原理及应用

    WTS701是华邦公司推出的内建喇叭驱动功能的“文字转发音”单芯片集成电路。该芯片将连续运算法与华邦专有的多层次储存技术相结合,从而实现了真正将“文字转发音”的完整功能。文中介绍了该芯片的原理及典型应用,给出了Cygnal F120 MPU与WTS701 的接口电路,并根据相应的芯片指令给出了其控制软件的代码程序。 Abstract:  WTS701 is really a single chip on “text-to-speech” produced by Winbond company building-in algorithm with the company's patented multi-level storageMLS technology熏 different from other chips that “text-to-speech” on the market at present. The principle and typical application of this chip are introduced in this article the interface circuit of Cygnal F120 MPU and WTS701 is presented. The corresponding? control software is provided.

    标签: WTS 701 发音 单片处理

    上传时间: 2013-10-08

    上传用户:旗鱼旗鱼

  • 基于DS1991和PIC单片机的智能水卡设计

    DS1991是一种多密钥信息纽扣,文章介绍了DS1991的主要特点、工作原理及读写方法。给出了一种基于DS1991和PIC单片机的智能水卡设计方案,同时给出了整个系统的硬件组成原理和软件设计方法。 Abstract:  DS1991 is a multikey iButton. The characteristic operation principle and the way of read/write of DS1991 are introduced in the paper. A smart water card based on DS1991 and PIC singlechip is presented the design of hardware and software are also given

    标签: 1991 PIC DS 单片机

    上传时间: 2013-11-06

    上传用户:李彦东

  • 基于PIC单片机的光电感烟探测器设计

    介绍了点型光电感烟探测器的工作原理,阐述了PIC16F676单片机的特殊功能,同时给出了该功能在探测器设计中的应用方法,最后给出了基于PIC16F676单片机设计的探测器的硬件构成和软件程序。 Abstract:  To begin with ,the principle of point type optical smoke detector is simply introduced and then the spe-cific functions of PIC16F676 are emphatically illuminated and it is also expounded that how to apply the specific functions in design of the detector.Furthermore the hardware and software design of detector are provided.

    标签: PIC 单片机 光电 感烟探测器

    上传时间: 2013-11-18

    上传用户:hanwudadi

  • 基于C8051F930的管道温度压力远程监测系统

       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.

    标签: C8051F930 温度 压力 远程监测系统

    上传时间: 2013-11-07

    上传用户:cuibaigao