自动化公路的组成原理表明自动化公路系统是辟出一条车道或一组车道,来让装有专门设备的小汽车、卡车和公共汽车等在计算机的控制下结队行驶，通过一个小型计算机网络（这些小型计算机安装在汽车内以及某些路段的路边）来协调车流,从而增大车流量,提高公路的运输能力。自动化公路交通所需的新技术大部分集中在汽车中,　一个前视传感器或一个摄像机探测前方的危险障碍物和其它车辆以及车道边界,这些设备与计算机相连,由计算机迅速处理得到的图像,然后操纵汽车转向、刹车,使车辆保持适当的速度和姿态。每辆汽车上都载有数字无线电设备,它使车上的计算机能够同附近的其它车辆通信,也能同监控公路的监视计算机通信,使驾车者得知有关汽车运行情况的信息。汽车驾驶员在进入自动化公路之前,把他要去的目的地输入计算机,然后通过一条专用驶入坡道进入自动化公路，当驾驶员接近公路的进入点时,安装在路旁的装置将通过电子方式对汽车进行询问,以确定它的目的地并检查它是否拥有处于正常工作状态的适当的自动化设备。在断定汽车通过了这些检查后,公路系统将引导驾驶员穿过一道门,驶向自动化车道,自动驾驶就开始了,驾驶员此时可以离开驾驶座去看书,做其它事情,甚至睡觉。自动化公路上车流的协调,可以采取自由代理人方式或成组汽车方式。自由代理人方式是各自独立地行驶,每辆车的行驶方式都保证即使它前面的一辆车全力刹车时,都能及时停下而不发生意外，两辆车之间所需要的间隔距离将取决于它们的刹车性能,路面的状况以及控制设备的电子反应时间等。成组汽车方式指在公路上行驶的是一组组相互间密切配合的汽车,这些汽车将通过一个无线局域通讯网互相联系,该网络可以连续不断地交换有关汽车的速度、加速度、刹车、障碍物以及其它诸如此类的信息。这样不断的信息交流使得一组中的汽车，实际上，变成了通过电子方式联接起来的列车，每一组可能有１０～２０辆自动汽车。然而与铁路列车不同的是,这些汽车列车将是动态的,它们将按照交通状况和各辆车目的地的要求而不断地组成,分开并重新组合。借助于的控制,可以使一组内各成员车的间距缩小到只有几米。由于各车之间的相对速度很小,发生碰撞的几率较小,即使相撞也只可能发生微不足道的损坏。相邻各组汽车之间的距离将足够大,以保证即使在前面一组突然停下时,它们不会撞在一起。汽车退出自动化公路的过程是把它进入自动化车流的过程颠倒过来。但此时可能发生驾车者尚未接过方向盘操纵汽车或睡着了等特殊情况,自动化公路系统必须提醒驾车者注意他快要到出口了,然后在驾车者承担起有限的操纵任务的情况下观察汽车的行驶状况。如果驾车者的动作正常,计算机就将完全放弃控制,而转由驾车者来完成退出自动化车道的过程。但是,如果驾车者没有做出正确的反应,报警器就将响起来。如果这样的催促不能叫醒驾车者,自动化系统就将通知有关部门说发生了意外情况,并让汽车在附近的待留区中地停下来。 一条典型的高速公路车道每小时可通过约２千辆汽车,而一条配备特殊装置后可自动引导车流的车道,每小时将能通过约６千辆汽车。由于不需要修建新的公路和拓宽现有的公路,节省下来的钱用来支付汽车自动行驶所需的复杂电子设备的费用绰绰有余。因此,总的责任费用将会下降。研究和发展自动化高速公路已是迫在眉睫的问题，相信在不远的将来，自动化公路会有长足的发展！某宾馆415工程项目是上海市重点工程项目。上海西门子公司负责其中低压配电监视部分工程。

1. 项目规模：低压配电室共有22台低压配电盘，配电回路80个。某宾馆配电枢纽。

2.系统性能：PLC可编程序控制器用于采集现场信号，现场信号直接或通过现场总线传给PLC可编程控制器CPU。经过PLC可编程控制器处理后，通过网关模块，将信号转变为MODBUS协议信号，传给总控制室DCS系统。在DCS系统中,本系统中PLC可编程控制器作为MODBUS从站。在总控制室内可以读取PLC中的数据，也可以向PLC中写数据，即可以在总控制室内控制现场的开关。

3. 系统特点：

现场总线DP-PROFIBUS直接与仪表通讯，读取仪表数据

MODBUS协议通讯data

 

Modbus protocol communication

 

PLC configuration:

 

Programmable controller CPU 315-2d 1

 

7 digital input modules di32324v

 

10 analog input modules ai8324v

 

2 I / O distribution slave stations et200m

 

6 multi-function meters umg503 (in low-voltage switchgear)

 

Gateway module CP341 due to China's huge automobile market, various international automobile giants have invested and built factories all over China. In order to expand brand share and automobile sales, automobile manufacturers will expand or transform their original plants or production lines. At the same time, the construction and transformation of automobile manufacturers will inevitably drive the competition among relevant parts manufacturers, Thus, parts manufacturers will also take corresponding measures to expand production. Therefore, more and more advanced production equipment and systems are needed to expand China's huge automobile market. At present, various international automobile giants have invested and built factories all over China. Automobile manufacturers have expanded brand share and automobile sales, The original plant or production line will be expanded or transformed. At the same time, the construction and transformation of automobile manufacturers will inevitably drive the competition among relevant parts manufacturers. Therefore, parts manufacturers will also take corresponding measures to expand production. Therefore, more and more advanced production equipment and systems are needed to expand their production, improve efficiency and reduce costs. The development of automotive automation system has become one of the focuses of the industry. 1、 The control system is developing in the direction of fieldbus. For the application needs of every industry, in order to promote the benefits of field intelligence, decentralized control functions and open control system,

 

Industrial Ethernet

 

This is a good choice for Ethernet manufacturing industry, and it is indeed a good contribution to the production of Ethernet. In the automobile manufacturing industry, large international investment projects have entered the Chinese market in recent years, especially the projects of the three major automobile companies in Japan. As a leading brand of application solutions in the automotive industry, Omron system solutions are being launched in various projects, including production execution system (MES), equipment monitoring and management system (FMCS), intelligence information system (RFID, 2-dimension code, BCR), wireless means of production communication system (wt30, wd30), etc. Take Omron's Fieldbus for example, it is built based on DeviceNet platform. Of course,