某贸易中心共10层，设有载客电梯1部。为了处理问题的方便，有以下的限定条件： （1） 电梯的运行规则是：可到达每层。 （2） 每部电梯的最大乘员量均为K人（K值可以根据仿真情况在10~20人之间确定）。 （3） 仿真开始时，电梯随机地处于其符合运行规则的任意一层，为空梯。 （4） 仿真开始后，有N人(>20人)在该国际贸易中心的1层，开始乘梯活动。 （5） 每个人初次所要到达的楼层是随机的，开始在底层等待电梯到来。 （6） 每个人乘坐电梯到达指定楼层后，再随机地去往另一楼层，依此类推，当每人乘坐过L次（L值可以根据仿真情况在3~10次之间确定）电梯后，第L+1次为下至底层并结束乘梯行为。到所有人结束乘梯行为时，本次仿真结束。 （7） 电梯运行速度为S秒/层（S值可以根据仿真情况在1~5之间确定），每人上下时间为T秒（T值可以根据仿真情况在2~10之间确定）。 （8） 电梯运行的方向由先发出请求者决定，不允许后发出请求者改变电梯的当前运行方向，除非是未被请求的空梯。
a total of 10 layers, with a passenger elevator. To address the issue of convenience, have the following qualifications : (a) lift the operating rules is : can be reached on each floor. (2) each lift crew of the largest volume of all K (K value can be based on the simulation of the 10 to 20 between determined). (3) simulation at the beginning, randomly located in the lift line with its rules of operation arbitrary layer of air staircase. (4) simulation began, a N (gt; 20) at the International Trade Center in one layer, started by ladder activities. (5) Each person must first reach the floors are random, in the bottom wait for the elevator arrived. (6) Each person taken the lift arrived at the designated floor and then another random foot to the floor, and so on, when each rode L (L value c (2005-06-12, C++, 9KB, 下载882次)
CELL-ID技术是目前最简单的定位技术，它的原理是通过获取目标手机所在的蜂窝小区ID来确定其所在的位置，提供给定位用户。它不需要移动台提供任何定位测量信息，也无须对现网进行改动，只需要在网络侧增加简单的定位流程处理即可，因而最容易实现，目前这种定位技术已经在各移动网络中广泛使用。它的定位原理很简单：网络根据移动台当前的服务基站的位置和小区覆盖来定位移动台。若小区为全向小区，则移动台的位置是以服务基站为中心，半径为小区覆盖半径的一个圆内；若小区分扇区，则可以进一步确定移动台处于某扇区覆盖的范围内。
err (2008-01-22, Visual Basic, 1264KB, 下载326次)
可编程程控滤波器MAX262驱动.可步进设置中心频率,Q,截止频率
MAX262 driver programmable filter program. Can stepping set center frequency, Q, cut-off frequency (2007-09-16, Others, 4KB, 下载309次)
通过键盘控制，选择max262不同的工作方式（低通，高通，带通）。用‘+’，‘-’及数字键来控制不同的中心频率，该文件就有详细的正确的C51程序及部分仿真电路。该源代码经过实际验证。
max262--Programmable Filtering (2009-09-17, C/C++, 286KB, 下载295次)
晶体塑性代码，黄永刚，91年，UMAT，abaqus，用户材料子程序，FCC,BCC,HCP
Crystal plasticity code黄永刚, 91 years, UMAT, abaqus, the user material subroutine, FCC, BCC, HCP (2009-05-29, Fortran, 16KB, 下载271次)
MSP430与GPRS短消息收发例程，短消息服务中心号码。
MSP430 SMS and GPRS transceiver routines, short message service center number. (2006-09-04, C/C++, 15KB, 下载180次)
GT033-TRX 是一款低成本的ISM 频段FSK 收发模块, 可工作在240--930MHZ 中任意频点。功率可以最大配
置为20dBm（si4432）,13dBm(si4431),接收灵敏度可达-118dBm,64 字节 TX/RX FIFOS,内置温度传感器，
8 位模数转换器,3 个I/O。支持跳频工作模式。可提供一个SPI 接口，通过MCU 设置就可调整各种参数（发
射功率.中心频点.带宽等）。无需外加功放电路就可实现远距离无线数据传输.
GT033-TRX is a low-cost ISM band FSK transceiver modules can operate at 240- 930MHZ arbitrary frequency. Maximum power can be configured to 20dBm (si4432), 13dBm (si4431), receiver sensitivity up to-118dBm, 64-byte TX/RX FIFOS, built-in temperature sensors, 8-bit ADC, 3 I/O. Support frequency hopping mode. Provide a SPI interface to MCU setting can be adjusted by various parameters (transmit power. Center frequency. Bandwidths, etc.). No external power amplifier circuit can realize long-distance wireless data transmission. (2010-05-19, Visual C++, 842KB, 下载164次)
本文介绍了住宅智能化中的防盗防火报警系统。智能化住宅防盗防火报警系统集防盗防火功能于一体，可实现自动检测与自动电话拨号报警。自动检测是指由红外探测与微波探测器构成的双鉴探测器实现盗情检测，同时由温度探测器、光电感烟探测器和一氧化碳探测器集为一体的复合式火灾探测器完成火情检测。多传感器的应用实现了低误报率，增强了系统可靠性。自动电话拨号报警是指通过电话网络自动向相关部门发出语音求救信号。当防盗、防火探测器检测到险情的时候，向单片机发出中断申请，再由单片机控制电话接口电路，实现模拟摘机，根据险情类别，自动拨打相关部门的电话号码如小区管理中心电话。
The System is made up of MCU and GSM Modem. It will display the alarm content in Chinese directly at your mobile screen, and it recurs to the most reliable GSM mobile network. The system adopted initiative infrared sensor to detect, and it turned the traditional alarm net and alarm windows to immateriality. Besides, the system equipped the smog sensor and leakiness sensor of gas and guarded against fire and gas leakiness. (2010-05-19, WORD, 9154KB, 下载144次)
大学毕业设计作品：出租车计价器的设计：以AT89S52单片机为中心，通过金属传感器来测距，实现对出租车的计价统计。结合语音芯片ISD4004，时钟芯片DS1302，功放模块LM386N组成语音时间控制系统，最后通过液晶显示模块LCD12864显示单价、路程、总价、时间等。本系统可以实现单价、起步价、白天价、夜间价的显示和时间的修改。AT89S52通过P0口与外部语音报价电路相连，可以实现语音报价功能。
Graduated from college design work: the design of a taxi meter: The AT89S52 microcontroller as the center, ranging through the metal sensor to achieve statistical valuation of the taxi. Combination of voice chip ISD4004, clock chip DS1302, composed of voice amplifier module LM386N-time control system, the final adoption of liquid crystal display module LCD12864 show unit price, distance, total price and time. This system can achieve unit price, starting at daytime price, prices shown at night and the time changes. AT89S52 through the P0 port with an external circuit connected to voice offer, you can offer voice functionality. (2009-09-06, C/C++, 7KB, 下载116次)
基于LabVIEW实现PC与PLC的实时监控#应用图形化编程语言LabVIEW,根据台湾永宏FATEK FBs系列可编程控制器通信协议,开发出FBsPLC与LabVIEW串口通信程序,并以LabVIEW为平台实现PC与PLC的实时监控系统 还介绍了LRC校验码的实现方法#
Application graphical programming language LabVIEW, according to Taiwan-Hong Yong FATEK FBs series programmable logic controller communication protocol developed FBsPLC serial communication program with LabVIEW and LabVIEW for PC platform with the PLC real-time monitoring system also described the realization of LRC method Check# (2009-04-30, PDF, 520KB, 下载99次)
大功率永磁无刷直流电机及其系统研究(博士论文)
大功率永磁无刷直流电机驱动系统由于运行效率高、调速性能好、可靠性高等优 点,在国外已成功应用于对系统效率、可靠性有特殊要求的推进领域中。然而,国际 上关于大功率永磁无刷电机及其驱动系统的成套技术一直对我实行封锁 在国内,永 磁无刷电机的研究主要集中在中小功率方面,大功率永磁无刷直流电机及其驱动系统 的研究尚处在起步阶段,在大功率永磁无刷电机的设计和驱动系统的研制方面都存在 大量值得研究的问题。 本课题为研究大功率永磁无刷直流电机及其驱动系统而设计了一台 50kW多相永 磁无刷直流电机,该电机的设计最大限度地模拟了某大功率多相永磁无刷直流电机的 基本结构,驱动系统也基本采用了某大功率永磁无刷直流电机的主电路结构。本文以 该电机为分析和研究对象,对大功率永磁无刷直流电机及其驱动系统的工作原理、参 数选取和电机工作情况进行了分析、总结和预测,为大功率永磁无刷直流电机及其驱 动系统的研制提供了宝贵的经验。全文内容如下: 首先,介绍了一种以晶闸管为主要功率元件的大功率永磁无刷直流电机驱动系统。
Due to high efficiency, excellent speed-adjustability, and high feasibility, the high-power Permanent Magnet Brushless DC Motor(PMBDCM)drive system has applied in the domains as ships, aircrafts and so on, where the attention is firstly paid to the running efficiency and feasibility of drive system. The equipments for high-power PMBDCM drive have been developed in foreign countries. (2009-05-14, PDF, 7803KB, 下载97次)
本文提出了一种基于ZigBee无线技术的校园供暖温度监测系统方案，并设计出了相应的无线传感器节点。本方案中使用基于AD590的温度测量电路，PIC16F877A微控制芯片和MRF24J20无线芯片搭建无线传感器网络。该无线传感器网络由一个位于控制室的协调器充当中心节点及若干个置放于各楼层暖气片旁的终端节点一起，构成一个星型网络。
In this paper, a ZigBee-based wireless technology campus heating temperature monitoring system programmes, and to design the corresponding wireless sensor nodes. The programme based on the use of the AD590 temperature measurement circuit, PIC16F877A chips and micro-control structures MRF24J20 wireless chip wireless sensor networks. The wireless sensor networks in the control room by a coordinator to act as the central node and several placed in each floor Heating-node next to the terminal together, constitute a satellite network. (2009-05-03, WORD, 422KB, 下载97次)
以51单片机为控制中心，ds18b20为温度检测器件，测得的温度通过1602lcd显示
51 microcomputer control center, ds18b20 for the temperature measurement device, the measured temperature displayed by 1602lcd (2010-04-18, C/C++, 19KB, 下载88次)
利用51单片机实现利用GPRS收发短信。GPRS模块与短信服务中心相通讯
Using 51 single chip using GPRS messaging (2010-08-28, C/C++, 45KB, 下载87次)
本电路以89S51 单片机为中心、附加A44E 霍尔传感器测距，实现对出租车计价统计，采用AT24C02 实现在系统掉电的时候保存单价和系统时间等信息，输出采用8 段数码显示管。本电路设计的计价器不但能实现基本的计价，而且还能根据白天、黑夜、中途等待来调节单价，同时在不计价的时候还能作为时钟为司机同志提供方便。
The single-chip circuitry to 89S51 as the center, an additional Hall sensor A44E ranging, to realize Taximeter statistics, using AT24C02 realize when the system power-down unit prices and save information such as system time, the output using 8 digital display tube. The circuit design of the meter will not only realize the basic valuation, but also according to the daytime, night, halfway to wait to adjust the unit price, while not denominated as a time clock can also provide convenience for the drivers comrades. (2008-04-19, Unix_Linux, 271KB, 下载85次)
DPLL由 鉴相器 模K加减计数器 脉冲加减电路 同步建立侦察电路 模N分频器 构成.
整个系统的中心频率(即signal_in和signal_out的码速率的2倍)
为clk/8/N. 模K加减计数器的K值决定DPLL的精度和同步建立时间,K越大,则同步建立时间长,同步精度高.反之则短,低.
DPLL phase detector by the addition and subtraction counter modulus K synchronous pulse addition and subtraction circuit detection circuit establishing mode N divider constituted. The entire system of the center frequency (ie signal_in and signal_out the code rate of 2 times) for clk/8/N. Modulus K addition and subtraction of the K value of Counter DPLL decision accuracy and synchronization set-up time, K the greater the synchronization set-up time is long, synchronous and high accuracy. In contrast the short and low. (2007-10-22, Others, 1KB, 下载84次)
用单片机AT89s52对可编程滤波器芯片MAX262 进行程序控制，可以同时对两路输入信号进行二阶低通、高通、带通、带阻以及全通滤波处理，滤波器的中心频率在15kHz～50kHz 频率范围内实现64 级程控调节，其Q 值在0.5～64 范围实现128 级程控调节。
In a simple, accurate, reliable, stable and universal principles, use of a hierarchical design to match the idea of interconnection. The characteristics of the system is: through the analog switch to change the feedback resistor value, thus changing the amplifier gain, gain from 10dB to 60dB adjustable step to 10dB.
With single-chip programmable filter AT89s52 of MAX262 chip to program, you can at the same time the input signal for two second-order low-pass, high pass, band-pass, band-stop and all-pass filter processing, filter center frequency in 15kHz ~ 50kHz frequency range of 64 to achieve adjustment program, the Q value in the range of 0.5 ~ 64 conditioning program to achieve 128. (2009-08-02, C/C++, 46KB, 下载84次)
用c语言设计实现一个用事件驱动的“救护车调度”离散模型，模拟120急救中心响应每个病人的呼救信号统一调度救护车运行的情况。 我们对问题作适当简化，假设：某城市共有m个可能的呼救点(居民小区、工厂、学校、公司、机关、单位等)，分布着n所医院(包含在m个点中)，有k辆救护车分派在各医院待命，出现呼救病人时，由急救中心统一指派救护车接送至最近的医院救治。救护车完成一次接送任务后即消毒，并回原处继续待命。假定呼救者与急救中心、急救中心与救护车之间的通讯畅通无阻，也不考虑道路交通堵塞的影响。可以用m个顶点的无向网来表示该城市的各地点和道路。时间可以分钟为单位，路段长可表示为救护车行驶化费的分钟数。 这里设m=10,n=3,k=2。并且令消毒时间为２分钟
language used to achieve a design using event-driven "ambulance dispatch" dispersion model to simulate 120 emergency response center each patient's distress signal unified dispatching ambulances running. We issue the appropriate simplified assumptions : m in a certain city a total of 000 points possible hue (residential quarters, factories, schools, companies, organizations, units, etc.), distributed by the hospital n (m included in the points), k ambulances were deployed in the various hospitals on standby there cries of the patients, from the first-aid center unified ambulance escort assigned to the nearest hospital for treatment. Ambulance completed a Shuttle mission after disinfection, and to continue the original standby. Assuming hue with the first-aid center, a medical (2005-03-02, C++, 15KB, 下载83次)
这是一个PIC18F4550 USB-HID简单的数据传输例子，编译器是MCC18，如果你觉得Microchip提供的MCHPFSUSB Firmware程序难以看懂的话，我相信这个例子更加适合你，因为里边最让人头疼的平台扩展信息都删掉了，保证让你最少时间获取最中心的内容。
PIC18F4550 USB-HID example. (2012-07-24, C/C++, 147KB, 下载78次)
楼宇对讲系统里用的文字信息接收。用可视对讲话机的TFT屏可看到从管理中心发过来的广播信息和本户的特发信息，采用二键式菜单式查询等功能。
buildings Talkback system that used to receive text messages. Visualization of his machine TFT screen can be seen from the management center sent the information and broadcasting operators of the idiopathic information, using two-button menu inquiry capabilities. (2006-02-21, C/C++, 279KB, 下载77次)