sscom30丁丁串口调试工具,可以自由设置波特率,速度,方向等等!学习串口控制的必备软件, 非常方便简单易用
上传时间: 2013-11-08
上传用户:coeus
针对科研实验中对拉压千斤顶加载过程控制的需要,采用ATmega128单片机控制步进电机进而实现对执行系统的电动泵站实行自动控制。对力和位移的数据采集与处理及用步进电机控制电动泵站手柄的技术细节作了重点描述。通过单片机的A/D变换器对AMP放大模块采集的电桥信号作量化处理,千斤顶的操控手柄位置依电动油泵阀门开启的方向和大小作若干定位,单片机根据力或位移传感器信号,实时控制步进电机驱动手柄旋转到相应操控位置。 Abstract: This article describes the use of ATmega128 AVR microcontroller series of DBS electric pumping stations and QF100/200 separate twoway hydraulic jack to automate the process of manipulating the work of the technical content. Articles on force and displacement data acquisition and processing, and stepper motor control electric pump with the handle of the key technical details were described. Through the MCU’s A / D converter module is collected on the AMP amplification quantify the signal bridge, jack handle position control valve opening according to the direction of electric pumps for a number of positioning and size of the microcontroller based on force or displacement sensor signals, real-time control stepper motor drive control handle rotate to the appropriate location.
上传时间: 2014-01-16
上传用户:hasan2015
为解决电致变色器件的颜色变化受外界环境颜色控制的问题,设计了一种基于单片机的便携式颜色自适应识别电路。与传统颜色识别电路相比较,该电路利用数字式的颜色传感器来获取外界环境颜色,产生的数字颜色信号易于单片机进行处理。在电路中,下位机部分主要负责获取电致变色器件变色参数及控制电致变色器件的颜色变化;而上位机部分主要负责把下位机获取的电致变色器件变色参数进行电压到颜色的曲线拟合,并通过蓝牙通信把拟合曲线参数传递给下位机。结果表明,该电路能自动根据环境颜色提供-4~4 V范围步进为0.1 V的电压来驱动电致变色器件的颜色显示,与传统的颜色识别电路设计相比,识别的精度和速度都得到了明显改善。 Abstract: In this paper, a portable adaptive circuit for color identification(PACCI) based on MCU was designed. Compared to the traditional color identification circuit, the PACCI adopts digital sensor to detect the color data from external environment and further generate digital color data, which can be processed easily by MCU. In PACCI, the slave is mainly responsible for detecting the color parameters of the corresponding elcreochromic device and further driving it. For the master, which is mainly responsible for the color curve fitting based on the parameters of the electrochromic device, and transmits the fitting parameters to the slave through the bluetooth device. The results show that the PACCI can provide the basis voltage range from -4V to 4V automatically based on the colors of external environment with step as 0.1V to drive the corresponding electrochromic device. Compared to the traditional color recognition circuit, the recognition accuracy and speed of PACCI have been improved significantly.
上传时间: 2013-11-09
上传用户:franktu
现有基于MAX7219芯片的数码管驱动电路只适用于小尺寸LED,为扩展其使用范围,在介绍动态显示芯片MAX7219功能的基础上,提出了一个基于该芯片的8位高亮度8英寸数码管驱动电路。电路保留了MAX7219芯片的功能强大、编程简单等优点,通过74LS273锁存器和ULN2803达林顿驱动器,实现了对任意大尺寸数码管提供较高电压和电流驱动的静态显示,并亮度可调。 Abstract: The existing display-driving circuit based on MAX7219 was only applicable to small-size LED. To expand its use, based on the function introduction of dynamic display chip MAX7219, a display-driving circuit for high-brightness 8-bit LED with the size of 8-inch was proposed. The advantages of MAX7219 were retained, such as powerful function and simple programming. Static display with adjustable brightness for large-size LED with higher voltage and current was achieved with the help of 74LS273 and ULN2803.
上传时间: 2013-10-23
上传用户:31633073
为了有效地提升铅酸蓄电池的使用寿命,同时实现对充电过程的监控,设计出一种用单片机控制的36 V铅酸蓄电池充电电源。本电路采用反激式拓扑,连续电流工作模式,电源管理IC设计在电源的副边,由ELAN公司的EM78P258N单片机模拟,是用可编程器件模拟电源管理IC,实现智能电源低成本化的一次成功尝试,通过对单片机的软件设计实现了充电电源的状态显示、充电时间控制、报警、过温保护、过压保护、过流保护等功能。本充电器真正的实现了铅酸蓄电池的三段式充电过程,其最高输出功率可达90 W,效率约85%,成本不到20元,具有很高的市场竞争力。 Abstract: In order to extend the life of lead-acid battery efficiently and supervise the charging process meanwhile, a 36V lead-acid battery charge powe supply controlled by microcontroller is designed. The charger is flyback switching power supply and works in CCM mode. A EM78P258N microcontroller made by ELAN microelectronics corporation is used as power management IC which is designed at the secondary circuit. The project is a successful attempt to low-cost intelligent power used microcontroller simulating power management IC. The charger also has the functions of the status reveal, charge time control, alarming, thermal protect, current limit and overvoltage protect by the software design. The circuit actually implements the three-step charge process, whose power is up to 90W and whose efficiency can get 85%. The net cost of this charger is less than 20 RMB, so that the charger is of powerful market competitiveness.
上传时间: 2013-11-16
上传用户:cepsypeng
以太网和CAN总线应用广泛,但由于其通信协议不同,两种总线器件间无法进行数据通信,因此,设计了基于CP2200与C8051F040的以太网总线与CAN总线接口转换电路,并给出部分相关硬件电路与软件设计分析。在保证数据完整和协议可靠的前提下,通过握手协议和简化的以太网协议,不仅实现了以太网数据与CAN数据的转发,同时还顺利的解决了以太网的高速性与CAN的低速率冲突,以及两者数据包之间的大小不同的矛盾。 Abstract: In the development of actual application, Ethernet and CAN bus are used very extensively. Owing to its various communication protocols, the communicating between two kinds of bus device can’t be carried out. Therefore, in order to solve this problem, the Ethernet-CAN bus interface circuit based on CP2200 and C8051F040 was designed in this paper, and part of the related hardware circuit and software design analysis were given. On the condition of data’s integrity and protocols’reliability, through the handshaking protocols and the simplified the Ethernet protocol, not only the data switching between CAN and Ethernet was realized, but also the differ in velocity and packet size was solved.
上传时间: 2013-10-15
上传用户:Ants
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
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.
上传时间: 2013-10-19
上传用户:xz85592677
AVRPRO烧录器,是针对ATMEL公司的90系列AVR精简指令单片机设计的专用烧录工具该产品只有软件部分,无需硬件支持,仅仅只需4根线,将计算机并口和用户板相连,这都是因为采用了ISP串行编程。软件支持擦、写、校验、写保护位以及批处理。使用极其方便。 该产品的最大优点有: 1. 使用串行编程,达到了在线编程,节省了购买万用编程器和适配器的费用(万用编程器需2千元左右,适配器需3、4百元,并各个芯片和封装需不同适配器)。用户板也无需在焊插座(带来可靠性下降),而且为软件升级带来了极大的便利。 2. 使用方便,无需硬件,给现场调试带来了极大的便利,不用再带笨重的编程器,而且为AVR单片机的使用上带来了方便。 3. 价格实在太便宜,为您省了不少钱。 硬件使用说明: 并口和用户板连接说明 并口2脚<―――>用户板单片机MOSI 并口3脚<―――>用户板单片机SCK 并口12脚<―――>用户板单片机MISO 并口25脚<―――>用户板单片机GND 软件使用说明: 软件名是AVRPRO.EXE,支持DOS,WIN9x,支持.hex(intel)格式,可直接运行AVRPRO.EXE,也可以键入AVRPRO.EXE 目录\文件名.HEX,直接运行时可进入菜单,可选择擦、写、校验、写保护位以及批处理。键入文件名时,软件运行批处理,自动完成擦、写、校验、写保护位
上传时间: 2014-12-27
上传用户:zhang97080564
串行传送的特点 随着多微机系统的应用和微机网络的发展,通信功能显得越来越重要。这里所说的通信是指计算机与外界的信息交换。因此,通信既包括计算机与外部设备之间,也包括计算机和计算机之间的信息交换。由于串行通信所用的传输线少,并且可以借助现存的电话网进行信息传送,因此,特别适合于远距离传送。对于那些与计算机相距不远的人机交换设备和串行存储的外部设备(磁盘等),采用串行方式交换数据也很普遍。在实时控制和管理方面,采用多台微处理机组成分级分布式控制系统,其中各CPU之间的通信一般都是串行方式。所以,串行接口是微机应用系统常用的接口。串行传送是在一根传输线上一位一位的传送,这根线既做数据线又做联络线,也就是说要在一根传输线上既传送数据信息,又传送联络控制信息,这就是串行方式传送的第一个特点。那么,如何来识别在一根线串行传送的信息流中,哪一部分是联络信号,哪一部分是数据信号。为解决这个问题,就引出了串行通信的数据格式的约定。因此,串行传送的第二个特点是它的数据格式有固定的要求(即固定的数据格式),分异步和同步数据格式,与此相应,就有异步通信和同步通信两种方式。异步通信方式是按字符传送的,而同步通信是按数据块传送的。
上传时间: 2014-12-27
上传用户:shen007yue