视频监控技术在智能交通领域的应用
摘要：针对近年来城市交通的拥挤现象，存在驾驶员的违章现象、交通事故频发以及车辆尾气污染的各方面问题，出集现了电子及通讯、计算机以及信息技术等具有时代特色的高新技术于一体的，具有智能控制的交通指挥中心系统。安装了这种智能系统的道路后，城市道路的堵塞现象得到了很大的缓解，同时，使道路的通行能力得到了极大的提高。由于这种智能控制系统的出现，驾驶员的生命安全得到了保障，减少了许多交通事故，而且车辆的尾气排放也得到了很大的改善，降低了对环境的污染。今天，对于交通灯，可以采取很多种的控制方式，比如用单片机，标准逻辑器件，以及可编程序逻辑器件PLC等方案。由于单片机编程复杂不容易掌握，而且不便于维护，而标准逻辑器件在实现电路时，会受到逻辑器件如门电路等影响，这样会使调试工作极不容易。用PLC实现对交通信号灯控制，由于其内部定时器，计时器资源十分丰富，可以较好的适应道路的环境，而且编程简单明了，易于维护。综上，我选择用PLC来实现对交通信号灯的控制。在上位机监控方面，采用组态软件 MCGS对交通灯控制系统进行实时动态监控，加强了整个系统的人机交互性和可行性。
关键字： 交通监控 交通灯 PLC控制 MCGS
Design of multi point temperature intelligent detection system for barn
Abstract: the most important problem in the management of the barn is to monitor the temperature change in the grain. The state pays high cost for grain storage, mainly because of the high cost of monitoring equipment, the management mode is not advanced enough. On the basis of theoretical research and field experiment, the design and development of real-time online monitoring and control system for grain storage temperature were carried out. Temperature detection is of great significance to prevent grain mildew. On principle and method of grain depot temperature, can basically eliminate the accidents of grain mildew, and save a lot of manpower and material resources, and improve the efficiency of management of the grain depot, make the management of food safe and reliable protection. At present, the grain depot temperature and humidity detection is basically artificial detection, high labor intensity, because detection alarm is not timely, resulting in the phenomenon of storage grain loss. So the imminent intelligent granary temperature detection system is designed and developed with high ratio of performance to price. Due to the large granary distributed wide, large reserves, grain depot management and monitoring is difficult, design of the computer measuring system of grain depot management software based on, by each barn in the configuration of the lower position machine will grain data by the wireless data transmission module to send to the PC, the PC will be the lower position machine data is expressed in the form of curves and tables that clearly shows the warehouse temperature condition.
Key words: temperature,barn,testing system design
目 录
第1章 绪论…………………………………………………………………………………………………………….. 4
1.1 设计背景及意义…………………………………………………………………………………………… 4
1.2 课题当前研究现状………………………………………………………………………………………. 4
1.2.1 国际研究现状………………………………………………………………………………………. 4
1.2.2 国内研究现状………………………………………………………………………………………. 5
第2章 十字路口交通灯的介绍………………………………………………………………………………….. 5
2.1 十字路口交通灯的原理…………………………………………………………………………………. 5
2.1.1 十字路口交通灯的原理及示意图…………………………………………………………… 5
第3章 硬件部分介绍……………………………………………………………………………………………. 7
3.1 PLC的相关知识………………………………………………………………………………………….. 7
3.1.1 PLC产生和定义………………………………………………………………………………….. 7
3.1.2 PLC的基本组成………………………………………………………………………………….. 7
3.1.3 PLC的基本工作原理……………………………………………………………………………. 8
3.1.4 PLC的特点………………………………………………………………………………………… 8
3.2 PLC的应用与前景……………………………………………………………………………………….. 9
3.3 输入输出点分配表……………………………………………………………………………………… 10
3.4 十字路口交通灯的接线图……………………………………………………………………………. 10
3.4.1 PLC控制系统I/O接线图…………………………………………………………………… 10
3.4.2 十字路口交通灯的接线图…………………………………………………………………… 11
3.5 十字路口交通灯的控制时序图……………………………………………………………………… 12
3.6 十字路口交通灯的程序设计………………………………………………………………………… 14
第4章 软件部分介绍………………………………………………………………………………………………. 16
4.1 MCGS软件的整体介绍…………………………………………………………………………………………. 16
4.1.1 MCGS软件的基本概念………………………………………………………………………………. 16
4.1.2 MCGS软件的主要特点………………………………………………………………………………. 16
4.2 MCGS组态软件的整体结构…………………………………………………………………………….. 17
4.3 MCGS组态软件的功能和特点…………………………………………………………………………. 18
4.4 MCGS组态软件的工作方式…………………………………………………………………………….. 19
4.5组态界面画面的设计…………………………………………………………………………………….. 20
第5章 结 论…………………………………………………………………………………………………….. 21
致 谢…………………………………………………………………………………………………………………. 23
参考文献……………………………………………………………………………………………………………….. 24
