road- surveillance system of city solution
With the fast developing economies, it follows the sharp increase of transportation vehicles. Although there is a great improvement in road infrastructure, but the traffic congestion phenomenon actually becomes more serious. For the increase of vehicles, it is necessary to carry out real-time surveillance at each important traffic crossing. At the same time, a good surveillance system for roads should be transparent, thus the drivers in different road region may keep abreast of other road traffic so as to achieve the adjustment of driving direction.
With the rapid development of network communications technology, image-compression processing and transmission technology, the newest computer, camera, communication and image processing techniques can be used on road so that it can provide efficient, workable and low-price solutions to realize road- surveillance system by transmitting digital images through computer network.
1, The solutions for the system:
The solutions include three parts: front-end part, transmission part, the controlling center .
The Front-end part is mainly used to collect the signals of video, saudio and traffic lights.
The transmission system is called on to transmit the signal collected by front-end part to surveillance centers such as traffic police brigade, transportation surveillance cener. Generally, there are 2-4 cameras at each surveillance point. We suggest to use telecommunication E1 special line, ADSL special line or city area net, which can provide at least more than 500 Ks north bound bandwidth.
The controlling center is the center of the whole road- surveillance system of city. It is mainly used to display, store and back play the real-time control from equipment of the front-end and video streaming, and provide system management function, analyze and make decisions about traffic signals. Thus it may greatly expand the traffic capacity.
Different number of IP cameras should be installed in traffic intersection.Through the platform of IP video surveillance system, traffic police can promptly know the accident condition and adjust the number of vehicles crossing to ensure smooth traffic.
Different number of network cameras should be installed in traffic accident black spots. Through the platform of network video monitoring system to promptly know the accident condition, authorities of the Traffic controlling can know the accident most quickly and send officers to deal with immediately.