1. The construction of the project background
As modern life rhythm, people's time is more valuable, in order to work, people may have to leave a lot of other issues, including the care of young children; Other people care about situation of their children is time, so we designed the remote monitoring system, let the children's parents can always care to their children, including at home and in kindergarten at any time.
2. The application scheme and concrete realization
2.1 system adopts SGARN network cameras. Direct access to the internal LAN all cameras. When the concrete implementation can be flexible change in light of the actual situation. The equipment is mainly complete image acquisition, transmission control, etc.
Video signal by the network camera for the front-end acquisition digital signal, through private network transmission to the monitoring center.
The monitoring center management system for all video footage, monitoring and management, and other tasks. You install and run each of one Enterprise Ver2.0 management software of multifunctional network to monitor the storage server, realize the image segmentation, image remote storage. This server at the same time also have the function of WEB services and database service.
Receive the monitoring center to complete the scene images, the user login management, priority allocation, control signal coordination, etc. The backbone of the monitoring center is to complete the whole system, undertaking the task of interface with users and front-end equipment, its design principle should be:
Powerful, able to manage multiple front-end system as well as multiple online users, front-end system adjustment or increase the number in the future, need not to increase the hardware device, or changes to the system, increase the capital investment;
Perfect user authentication mechanism (username, password, front-end system password, priority) mechanism;
Multiple activities of video image at the same time receiving, forward to meet all customers online application;
Powerful center coordination mechanism (alarm management, image forwarding, recording application, concurrency control coordination, etc.);
Advanced software platform, conform to the standard and the direction in the future.
2.2 the network bandwidth
The network camera is based on the broadband network products, in 320 * 240 resolution and image secondary compression can be achieved under the condition of 25 frames per second, each device requires the bandwidth of the 2.1 M or so at this time. Considering the different network application environment, the network camera provides the bandwidth management technology, can according to user's actual situation, to adjust the bandwidth.
2.3. Image storage section
The network cameras have a variety of different compression methods for users to choose, save the image size changes with different compression ratio. Note: to save images, the size of the actual will be slightly different because the scene is: general advice to save the image to select a resolution of 320 * 320 for mpeg-4 compression way, generally a frame image size in engineering at about 10 KB, graphic size mainly decided by the screen graphical richness, graphic picture more rich, the greater the graphic file size.
In the system of video can be implemented in two ways, namely, MPEG4 and M - JPEG, the following two ways are calculated separately, and the space usage.
(1) in the M - JPEG way
According to the requirements of all monitoring points to convert the 24 hours continuous real-time video and stream file to save, is 1 road store 30 days needed for video total storage capacity calculation is as follows:
10 KB/f 10 f/s, 3600 s/h x x x 24 h/d x 1 x / 1024/1024/1024 = 0.72 TB
According to the computer storage characteristics and actual motion detecting video features, we estimate the video surveillance video the required storage capacity is about 1 t.
(2) take the form of MPEG4
Images according to the requirements of all monitoring points in the flow of MPEG4, 24 hours continuous real-time video to save, is 30 days 1 road store video required total storage capacity calculation is as follows:
300 MB x 24 h/d x 30 d / 1024 x 1/1024 = 0.2 TB
features
Fully digital, networked, Enterprise Ver2.0 management center system software to network cameras, video and control the transmission of data, management, storage, etc all links based on network platform, using standard TCP/IP protocol, powerful, flexible network.
Through Ethernet, spread the configuration of monitoring points, all levels of the monitoring center into a large tree multi-level application management framework, using the large background database centralized management of users, monitor equipment. Real distributed monitoring and centralized management
Any combination, any call, several different client only within the network to watch and control different permissions within the lens group.
Synchronous support multiple image processing, real-time display and lens group functions.
Provide open interface, support for multiple vendors, multiple protocols of the grade, type of ball mill and yuntai. At the same time realize the normal control and some special functions, such as: preset a call, automatic inspection, etc.
Has perfect video, search and playback function, provide video, mobile video and alarm video three consecutive video mechanism, the user can according to the actual need to formulate different video strategy.
With perfect user authentication management mechanism
Have the event log function, complete system of record information, video information, alarm information.
Support alarm linkage. System can be connected with various front-end alarm equipment, and can decide the strategies of protection/removal in advance.
Ver2.0 Enterprise management software, to fully support through IE monitoring management, remote monitoring of digital implementation is based on the Internet, greatly expand the video surveillance applications.
