十字路口车辆穿梭，行人熙攘，车行车道，人行人道，有条不紊。那么靠什么来实现这井然秩序呢？靠的是交通信号灯的自动指挥系统。交通信号灯控制方式很多。本设计主要分为五大模块输入控制电路、时钟控制电路、片内外程序切换控制、显示电路。以MSC-51系列单片机IntelAT89C51为中心器件来设计交通灯控制器，实现了AT89C51芯片的P0口设置红、绿灯、黄灯燃亮时间的功能；为了系统稳定可靠采用了74LS14施密特触发器芯片的消抖电路，避免了系统因输入信号抖动产生误操作；显示时间直接通过AT89C51的P2口输出，由CD4511驱动LED数码管显示红灯燃亮时间。
Crossroads shuttle vehicles, pedestrians bustling, car lanes, walkways, everything in good order and well arranged. So what can we do to achieve this orderly order? It depends on the automatic command system of traffic lights. There are many ways to control traffic lights. This design is mainly divided into five modules, input control circuit, clock control circuit, chip internal and external program switching control, display circuit. MSC-51 series microcontroller IntelAT89C51 centric devices to design the traffic light controller, the AT89C51 chip P0 port set of red, green, yellow light to kindle the function of time; the system is stable and reliable with shake eliminating circuit 74LS14 Schmidt trigger chip, avoids the system for input signal jitter generation misoperation; direct display time AT89C51 through the P2 port output, driven by CD4511 LED digital tube display lights burning time. (2017-10-31, WINDOWS, 142KB, 下载5次)
熙熙攘攘的街头，人流车水有条不紊地行进着，靠的是交通灯的指挥作用，交通灯的绿、红、黄灯交替工作着，指挥着交通，维持着秩序。
课程设计采用单片机AT89C51为中心器件来设计交通灯，从而模拟十字路口交通灯的各种状态显示。设计由单片机AT89C51，LED八位数码显示管等组成。软件上采用C语言编程实现。主要编写了主程序，数码管显示程序和延时程序，经模拟，实现交通灯的功能。操作简单，设计简单易懂，但由于采用的是纯延时，因此会有一定的误差，但不影响总体效果。
在遇紧急情况时，可通过按键控制交通灯全亮红灯，从而解决紧急情况的交通问题。
Bustling streets, traffic cars, water methodically moving, relying on the command of the traffic lights, traffic lights green, red and yellow lights alternating work, directing traffic, maintaining order.
The curriculum design uses the single chip microcomputer AT89C51 as the central device to design the traffic lights, thus simulates each kind of status display of the intersection traffic lights. Design by SCM, AT89C51, LED, eight bit digital display tube and so on. The software is programmed with C language. Mainly written in the main program, digital display procedures and delay procedures, by simulation, to achieve traffic lights function. The operation is simple, the design is simple and easy to understand, but because of the adoption of pure delay, there will be some errors, but it does not affect the overall effect.
In case of emergency, the traffic lights can be controlled by a button to complete the red light, thus solving the traffic problems in an emergency. (2017-08-04, C51, 54KB, 下载2次)
该TCS3200与TCS3210可编程色彩
相结合的置信光 - 频率转换器
可配置硅光电二极管和一个电流 - 频
在一个单片CMOS昆西转换器
集成电路。的输出是一个方波
（50％占空比）以频率直接成比例
佐丹奴国光强度（辐射）。
满刻度输出频率可以通过三个预设值之一通过两个控制输入引脚进行缩放。数字
输入和数字输出允许直接接口到一个微控制器或其它逻辑电路。输出使能（OE
）
放置用于多单元共享一个微控制器输入线中的高阻抗状态的输出。
在TCS3200，光 - 频率转换器读取光电二极管的一个8×8的阵列。十六光电二极管有
蓝滤光片，光电二极管16是绿色过滤器，光电二极管16有红色的过滤器和光电二极管16都清楚
不带过滤器。
在TCS3210，光 - 频率转换器读取一个4×6阵列的光电二极管。六光电二极管有蓝色的
过滤器，光电二极管6是绿色过滤器，光电二极管6有红色的过滤器和光电二极管6是明确的，没有
过滤器。
的四种类型的光电二极管（颜色）相互交叉，以尽量减少非均匀事件的效果
辐照度。
相同颜色的所有光电二极管并联连接。销S2和S3用于选择
组
光电二极管（红，绿，蓝，透明）是活动的。光电二极管110
μ
米×110
μ
米的尺寸和上
134-
μ
米中心。
The TCS3200 and TCS3210 programmable color
light-to-frequency converters that combine confi-
gurable silicon photodiodes and a current-to-fre-
quency converter on a single monolithic CMOS
integrated circuit. The output is a square wave
(50 duty cycle) with frequency directly propor-
tional to light intensity (irradiance).
The full-scale output frequency can be scaled by one of three preset values via two control input pins. Digital
inputs and digital output allow direct interface to a microcontroller or other logic circuitry. Output enable (OE
)
places the output in the high-impedance state for multiple-unit sharing of a microcontroller input line.
In the TCS3200, the light-to-frequency converter reads an 8 x 8 array of photodiodes. Sixteen photodiodes have
blue filters, 16 photodiodes have green filters, 16 photodiodes have red filters, and 16 photodiodes are clear
with no filters.
In the TCS3210, the light-to-frequency converter reads a 4 x 6 array of photodiodes. Six (2015-07-08, Visual C++, 33KB, 下载7次)
十字路口车辆穿梭，行人熙攘，车行车道，人行人道，有条不紊。那么靠什么来实现这井然秩序呢？靠的就是交通信号灯的自动指挥系统。交通信号灯控制方式很多。本系统采用MSC-51系列单片机ATSC51和可编程并行I/O接口芯片8255A为中心器件来设计交通灯控制器，实现了能根据实际车流量通过8051芯片的P1口设置红、绿灯燃亮时间的功能；红绿灯循环点亮，倒计时剩5秒时黄灯闪烁警示（交通灯信号通过PA口输出，显示时间直接通过8255的PC口输出至双位数码管）；车辆闯红灯报警；绿灯时间可检测车流量并可通过双位数码管显示。本系统实用性强、操作简单、扩展功能强。过上、下限温度时，进行声音（蜂鸣器）报警。
Crossroads shuttle vehicles, pedestrians bustling, car dealers driveway, walkway person, methodical. So rely on to achieve this orderly order it? Rely on automatic command system traffic lights. Traffic signal control many ways. The system uses the MSC-51 series MCU ATSC51 and programmable parallel I/O interface chip 8255A-centric device designed to traffic light controller realized according to the actual traffic flow through the P1 port 8051 set of red, green kindle time function traffic light cycle light, countdown five seconds flashing yellow warning (traffic light signal through the PA output, display time directly through the 8255 PC port output to double-digit LED) vehicles ran a red light alarm green time can detect vehicles Traffic and through the double-digit digital display. The system is practical, simple operation, expand strong function. Over the upper and lower temperature, for sound (buzzer) alarms. (2013-06-06, C/C++, 268KB, 下载7次)
存在很多局限。例如：报警中心地点和人员需固定，报警通信速度慢，反向查询、控制等
操作困难而专业，电话线断线问题难以解决，通信费用、尤其是远程通信费用较高，不利于
组建远程网络，通信带宽太小，加载信息量少，音视频信号的技术手段应用困难， 很难应
用于家庭安防市场等等。
而彩信业务自中国移动从2002 年9 月正式推出以来，随着彩信网络工程的建立和不
断地优化，彩信逐渐进入了高速发展和稳定应用阶段。所以人们越来越关注于依托中国移动
网络、基于彩信业务来发展现代的电子防盗报警系统， 从而能在此系统上发挥其随时随地
监控、网络涵盖范围大、查询控制等操作简便、费用低、报警通信速度快、音视频应用简易
等众多优势，使其能广泛应用于家庭、办公、工厂、商铺等等各种场所。
系统硬件设计
There are many limitations. For example: alarm center location and staff should be fixed, alarm communications speed slow, reverse inquiry, control and so on
Difficult operation, and professional, the telephone line break the problem is difficult to solve, communication costs, especially the remote communication cost is higher, go against
Form a remote network, communication bandwidth is too small, loading less information, audio and video signal technology application difficulty, it is difficult to should be
Used for family security market, and so on.
And MMS business since China mobile from September 2002 officially launched since, with the establishment of the network project, the MMS and not
Break the ground optimization, MMS gradually into the high speed development and stability application stage. So people pay more and more attention to rely on China mobile
Network, based on the development of modern business MMS to electronic security alarm system, thus in the system can (2012-06-06, C++ Builder, 1868KB, 下载8次)
火灾报警显示盘是一种用单片机设计开发的可以安装在楼层或独立防火区内的数字式火灾报警显示装火灾报警显示盘置。它通过总线与火灾报警控制器相连，处理并显示控制器传送过来的数据。当建筑物内发生火灾后，消防控制中心的火灾报警控制器产生报警，同时把报警信号传输到失火区域的火灾报警显示盘上，火灾报警显示盘将产生报警的探测器编号及相关信息显示出来同时发出声光报警信号，以通知失火区域的人员，火灾报警显示盘设有8位报警信息显示窗，可将报警探测器的编码号显示出来，满足大范围的报警显示要求。当用一台报警控制器同时监控数个楼层或防火分区时，可在每个楼层或防火分区设置火灾报警显示盘以取代区域报警控制器。
Fire Alarm display panel developed a single-chip design can be installed on the floor or an independent fire district digital fire alarm fire alarm display mounted display panel set. It is connected by bus and fire alarm control and display controller transmitted over the data. When the fire in the building, the fire control center of fire alarm control alarm, fire alarm while the alarm signal is transmitted to the fire region on the display panel, fire alarm display panel will generate alarm detector number and related information is displayed audible and visual alarm signal to inform the personnel of the fire region, fire alarm display panel has 8 alarm information display window, the alarm detector code number is displayed, to meet a wide range of alarm display requirements. When an alarm controller to monitor the number of floors or fire partition, fire alarm on each floor or fire district set the display panel to replace the area alarm controller.
(2012-03-04, C/C++, 44KB, 下载11次)
滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f，品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB，通过单片机控制DA进行分压，可精确实现要求的10dB步进，误差小于0.5 ，通带为100Hz-500KHz，输入电压峰－峰值范围为10mV，在输入范围内无明显失真。由MAX264为核心的滤波器，可设置为高通、低通滤波器。通过单片机直接给出控制频率，使-3dB截止频率在1KHz-20KHz内可调，步进1KHz，误差小于1 。整个系统以52单片机为控制核心，电路简单，性能稳定，且具有较高精度，滤波参数调节通过单片机控制，较为方便。
Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for (2011-07-17, Visual C++, 1597KB, 下载12次)