Design scheme of the hottest Jingyang intelligent

Jingyang intelligent city road monitoring system design scheme (Figure)

I. overview:

in recent years, the investment in infrastructure has been increasing, and road construction is one of them. As the road construction period is generally long, its growth rate is far from keeping up with the rapid growth of vehicles, making the traffic situation worse, which is a common problem in almost all cities. Therefore, establishing a fully functional traffic monitoring system in the urban traffic management department is an effective solution to improve the current traffic situation. Through the traffic monitoring system, we can strengthen traffic management, improve the traffic capacity of existing roads, coordinate and deal with sudden traffic events, ease traffic congestion, and improve traffic conditions

the traffic monitoring system with perfect functions includes traffic signal control system, television monitoring system, traffic management information system, communication system, traffic guidance system, etc. In order to effectively manage traffic, we must use the monitoring system to collect, sort out and analyze the urban traffic information, and put forward traffic control strategies for these data. Therefore, the collection of traffic information plays a very important role in traffic monitoring

during the engineering design of the closed-circuit monitoring (CCTV) system, according to the basic requirements of customers for the road monitoring system, our company takes reasonable structure, safety and reliability, mainstream products, low cost and low maintenance as the starting point, and based on this, we provide customers with advanced, safe, reliable and efficient solutions. Easy integration, reliable performance, simple operation, advanced technology, strong scalability and convenient maintenance are our design ideas; For the sake of users, making the owners' investment more reasonable is our purpose

II. System design

system design basis

the design of this security system fully conforms to the relevant regulations and specifications of the Ministry of public security of the people's Republic of China, Including:

1 security engineering procedure  GA/T

2 general graphical symbols of security system GA/T

3 preparation method of cost estimate and budget of security engineering GA/

4 cost quota of electronic equipment installation hyd

5 provisions of risk level and protection level ga/t

6 civil buildings according to the requirements of power batteries and energy storage batteries GB

7 general technology of anti theft alarm controller Conditions GB

8 code for electrical design of civil buildings JGJ/T

9 code for construction and acceptance of electrical installation engineering in China GBJ

10 code for engineering design of generic cabling system in buildings and building complexes CECS 72.95

11 system grounding form and safety technical requirements GB

III The system needs to connect finance and real economy through the Internet

1 Camera part

the camera part is the front part of the TV monitoring system and the "eye" of the whole system. It is arranged at a certain position of the monitored place, so that its field of view angle can cover the whole monitored parts. Sometimes, the area of the monitored place is large. In order to save the number of cameras and simplify the transmission system and control and display system, an electric (remotely controllable) variable focal length (zoom) lens is added to the camera to make the distance that the camera can observe longer and clearer. At the same time, the camera is also installed on the electric PTZ. Through the control of the controller, the PTZ can drive the camera to rotate horizontally and vertically, So that the camera can cover a larger angle and area. In a word, the camera is like the eye of the whole system in which the differential current of the torque motor is proportional to the displacement of the valve core in the balanced state. It changes the monitored content into an image signal and transmits it to the monitor of the control center

2. Transmission part

the transmission part is the channel of system image signal, sound signal, control signal, etc. At present, most TV monitoring systems use video baseband transmission. If the camera is far away from the control center, RF transmission mode or optical fiber transmission mode is also adopted. Generally, hotels require that the transmission distance is relatively close, and baseband transmission mode can be adopted, that is, 75 ohm video coaxial cable. The key requirements for image signal transmission are that after the image signal passes through the transmission system, it will not produce obvious noise and distortion (neither chrominance signal nor brightness signal will produce obvious distortion), so as to ensure that the clarity and gray level of the original image signal (the image signal output from the camera) will not decline significantly

3. Control part

the control part is the "heart" and "brain" of the whole system, and it is the command center to realize the functions of the whole system. The control part is mainly composed of the main console (some systems also have auxiliary consoles). The main functions of the main console are: video signal amplification and distribution, image signal correction and compensation, image signal switching, image signal recording, etc; Remote control the camera, electric zoom lens, pan tilt, etc. to complete the comprehensive and detailed monitoring or tracking monitoring of the monitored places in pairs; Carry out defense deployment, defense removal and other functions for the defense area of the system. When there is an illegal intrusion in the front defense area, the alarm signal is transmitted to the general console, which can display the alarm defense area, linkage alarm signal, flashing light, front-end light, video recorder and other equipment

when assembling the console, the main principles are as follows:

select the maximum number of input channels of the video switcher according to the number of cameras in the system. The maximum number of input channels of the video switcher should generally be greater than the number of cameras, so as to leave room for future expansion. Select the number of video recorders according to the risk level of the system and the number of key locations in the area. If continuous video recording is required, select "digital hard disk video recorder"

in addition, according to the requirements of system control, consider whether to set a sub console outside the main console

according to the power supply requirements of the whole system, consider the setting of power supply

when the system has multiple long-distance signal transmission, it should also consider whether a demodulation device (corresponding to optical fiber transmission or radio frequency transmission) should be added in the console according to the way of long-distance signal transmission (video transmission, optical fiber transmission, radio frequency balanced transmission, etc.)