基于对相关电力企业安全工器具的调研，针对现有的对安全工器具的管理比较落后，从而导致难以对安全工器具进行有效监控的问题，提出了一种简单有效、容易实施的安全工器具监控方案。首先从整体上描述了安全工器具监控系统的总体结构，然后分别从硬件设计和软件设计两个方面对系统进行了详细阐述。该系统已经成功运用于某电力企业的安全工器具监控，运行稳定，达到了设计的预期目的。
上传时间： 2013-11-05
上传用户：blacklee
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
介绍一种基于C8051单片机的动态心电监护系统。该系统由两部分组成：以C8051F320单片机为核心的数据采集装置和以PC机为平台的分析处理系统。硬件电路功耗低，由单片机自带的USB接口将数据传送给PC机。软件平台采用LabVIEW可视化虚拟仪器系统开发平台，将传统仪器的功能模块集成到计算机中，用户可通过修改虚拟仪器的程序改变其功能。采用USB接口实时传输心电数据，并将数据采集模块设计为计算机外设，使该系统高速快捷、小巧便携。 Abstract: In this design，a low-cost ECG electrocardiogram monitoring system is introduced，which consists of two parts:data acquisition device based on C8051F320and PC terminal as the analysis and processing system.The system is low-power consumption，the data is transmitted to the PC terminal by USB interface of the C8051F320.By using the visible virtual instrument system developing platform LabVIEW，the traditional instruments function modules are integrated into the computer，so the user can modify virtual instrument software to change its function to meet their needs.Using USB in-terface to realize real-time ECG data transmission，in addition，ECG data acquisition module is designed as the computer peripheral，which makes the syetem high-speed and portable.
上传时间： 2013-11-13
上传用户：zhangzhenyu
介绍了一种基于C8051F020单片机的多路压力测量仪。该测量仪选用电阻应变式压力传感器采集压力信号，并经放大电路处理后送入C8051F020单片机，再由C8051F020单片机内部的A/D转换器将采集到的压力信号进行模数转化，然后分别对数据进行存储和显示。该测量仪能测量6路压力信号，并且各测量点都能单独检测和设置。由于采用了C8051F020单片机，简化了硬件电路，增强了抗干扰能力，使得测量仪具有测量精度高，冲击小等特点。 Abstract: A measurement apparatus for multi-channel pressure based on single chip microcomputer is introduced.It can measure 6 channels signal of the pressure，and the pressure measure points can be detection and located individually.The pressure signal sampling is obtained by resistor stress-type pressure sensors，the digital signals of 6 channels are collected through amplifying and adjustment circuit of pressure signals and internal integrated A/D converter of MCU.Finally，and it realizes the function to store and display data separately.C8051F020 was used to made hardware circuit simple，and it also enhanced the anti-interference ability.It features high precision and little impact.
上传时间： 2013-11-16
上传用户：yare
介绍一种简单射频识别系统设计。该设计包括阅读器、应答器和线圈3部分。由单片机控制阅读器向应答器发射无线信号，并接收应答器回送的信号，再通过分析回送信号识别物品。阅读器和应答器之间以半双工通信方式通信。 Abstract: A simple design of radio frequency identification system is given in this paper.The design includes reader,responder and winding.Through MCU，signals are sent to responder from reader，then corresponding signals are sent back. According to the analysis of the signals sent back，the objects can be identified.Half-duplex communication is adopted? between? reader? and? responder.
上传时间： 2013-10-11
上传用户：plsee
将现行的供暖计费方式由按建筑面积计费变为按消耗的热能计费是供暖计费方式发展趋势，为了满足这一计费方式变化的需要，设计了基于IC卡的预付费式新型供暖计费系统，通过测量用户采暖系统进出口的温度和流量，计算用户消耗的热能，利用IC卡记录用户预付费的金额和当年热能的单价，根据热能消耗和当年热能的单价计算用户采暖费，根据实际发生的供暖费用和预付费金额控制供暖的开停，这一计费方式的变化使供暖计费更趋合理。 Abstract: It is trend that the mode of heat charging is changed from billing by building area to by thermal energy. In order to meet the needs of heat charging mode changing， a new system of heat charging based on IC card is proposed. The user?蒺s energy consumption is calculated by measuring the user inlet and outlet temperature and flow，using the IC card to record the prepaid amount and the current price of heat. The user?蒺s heating costs is calculated according to energy consumption and current price， according to actual heating costs and prepaid amount，the system controls the heating opening or stopping. It is more reasonable that calculated heating costs by user heat consumption
上传时间： 2013-10-14
上传用户：大融融rr
摘要：根据空气压缩机控制系统的要求和特点，介绍了一种基于51单片机的螺杆式空气压缩机控制器的设计方法。控制器以单片机为控制核心，结合外围信号采集放大电路、键般扫描电路、液晶显示电路和继电器电路等。关键词：单片机；信号采集；螺杆式空气压缩机
上传时间： 2013-10-14
上传用户：cuiyashuo
摘要：介绍了由AT89C51和一些外围器件组成的智能门锁控制系统。较为详细地阐述了系统的设计思路，并时部分硬件电路进行了分析和介绍。该系统可以自动完成读卡、识剐用户、开锁、自动报警等功能，运行稳定可靠。关键词：控制系统；智能门锁；AT98C51单片机；读卡器；串口通信
上传时间： 2013-10-14
上传用户：bruce5996
基于SH88F516 单片机的人民币伪钞鉴别仪的实现在与假钞技术展开的拉锯战中，为了最大程度的维护消费者利益和财产，验钞机的鉴伪能力亟待提高和更新。验钞机市场潜在的发展空间是巨大的。目前基于验钞机的国家标准为1997 年国家技术监督局批准的GB 16999-1997。 1. 验钞机系统的性能及技术指标相关的主要性能及技术指针如下列表所示：
上传时间： 2013-11-12
上传用户：XLHrest
基于MSP430 单片机设计了一种近红外水分分析仪，采用了很好的模型建立方法，提高了测量的准确性和可靠性，同时由于MSP430 单片机片上外围部件集成度高和低功耗的特性,使得系统结构紧凑,节约了成本，增强的用户使用界面,使得操作简便。
上传时间： 2013-11-15
上传用户：sqq
