为解决我国水位监测野外条件下长期无人看守的问题,研制开发了基于MSP430单片机的智能水位计。从其组成到各功能分别进行了详细的介绍,该智能水位计不仅实现了水位数据的实时监测、记录和定期采集等多种工作模式,而且提高了水位监测精度,实现了水位监测的智能化。 Abstract: In order to solve the problems of long-term unmanned observation in the field water monitoring,an intelligence water-level meter based on MSP430 is developed composition and every function moduce of the water level meter was introduced in detail. It not only realizes water level data collection and storage, regularly gathering and so on, but also improves the water-level precision , finally realizes the intelligence.
上传时间: 2013-11-17
上传用户:417313137
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
介绍了一种用单片机控制的智能微波信号源发生器,以美国国家半导体公司的低功率,高性能的δ-Σ小数分频数字锁相环电路LMX2485和YTO为核心构成.微波信号源的工作频率范围为8~14GHz,频率分辨率为40GHz.分析了设计方案及实现过程中的关键技术,给出了部分实验结果.
上传时间: 2013-10-20
上传用户:banlangen
摘要:本文介绍了一种基于单片机和测量电压真有效值方案设计的智能数字交流毫伏表。它能精确测量任意波形的低频模拟周期信号并同时显示其有效值和分贝值。具有智能量程转换功能。 关键词:单片机 数字毫伏表 真有效值 智能量程转换
上传时间: 2013-11-09
上传用户:gaoqinwu
从系统硬件设计和软件构成上,介绍一种以AT89C52单片机为核心,通过无线遥控方法实现对预设电话自动拨号报警的智能呼救系统。系统提供了患者在紧急情况下无法使用电话报警时的一种报警手段。由用户预设的多组电话号码作为语音报警对象,预录可长达20 s的语音信号来说明患者所处地点及病情,并通知患者家人。 Abstract: This paper introduces a intelligent alarming system which is realized by wireless remote control system.This system chiefly consists of AT89C51 the system can processor.User can input several groups of telephone number regarded as alarming objects,The system can record some information 20 seconds to tell the site of the patient.And notice the rokonok of the patient.
上传时间: 2013-11-19
上传用户:wd450412225
介绍了电力操作电源与智能电池巡检系统的特点,给出了一种基于超低功耗单片机MSP430 F149针对中小型变电站自动化运行的专用设备的基本设计原理及实现方法,最后给出了详细硬件构成和软件实现。该系统能满足中小型变电站安全、可靠、自动运行的要求,并通过与上位机的串行通信实现变电站的远程管理和控制。 Abstract: The characters of the intelligent battery data logging system of the electric operation power are introduced.The basic design principle and the implemented methods of the special equipment which only designed for the middle or small transformer substation based on MSP430F149 are prescribed. Finally, the hardware block diagram and the software flow chart are also given. The function that the system finally needs to realize can basically meet with the middle or small transformer substation’s satisfy, reliably,and automatic running.And it can also realize the transformer substation long-distance management and control by serial communicating with the host computer.
上传时间: 2013-11-25
上传用户:黄华强
出了一种利用ATmega8单片机对ISD2500系列语音芯片进行控制的智能语音系统,此系统使用灵活,易于功能升级,具有良好的应用前景。提供了硬件连接电路和关键源程序。 Abstract: An intelligent voice system using ISD2500 series voice chips based on ATmega8 MCU is described.This system is flexible and easy to upgrade for users,and it has pretty good using foreground. The circuit diagram and the key program are also provided.
上传时间: 2014-01-22
上传用户:Artemis
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
上传时间: 2013-11-06
上传用户:李彦东
对智能仪器系统中的在系统编程(ISP)技术及其在仪器系统中在线编程的实现、应用前景等进行了分析。介绍了P89C669相对于传统51系列单片机的增强特性,并给出P89C669快闪存储器的ISP实现电路和具体方法。结合实际介绍了一种可以在系统编程的智能键盘、数码管显示系统。
上传时间: 2013-12-27
上传用户:LouieWu
摘要:传统的门锁既要备有大量的钥匙,又要担心钥匙丢失后的麻烦。随着单片机的问世,出现了带微处理器的密码锁,它除具有电子密码锁的功能外,还引入了智能化、科技化等功能,从而使密码锁具有很高的安全性、可靠性,受到了广大用户的亲睐。本文介绍一种基于单片机和串行EEPROM的智能密码锁,对系统硬件设计和软件实现进行了详细的描述。该系统采用STC89C51单片机和AT24C02串行EEPROM,通过STC89C51模拟I2C总线和AT24C02通讯来读取存储的密码,用户通过键盘输入的密码,实现密码锁的功能。
上传时间: 2013-12-09
上传用户:JasonC