The design of video security monitoring system should be based on the actual field investigation, and comprehensively consider environmental conditions, monitoring objects, investment scale, maintenance and monitoring methods and other factors. The design of the system should meet the requirements of relevant risk levels and protection levels, and meet the relevant design specifications, design task books and the management and use requirements of the owner.

2 advanced and interchangeability

The design of video security monitoring system should be technologically advanced and interchangeable, leaving room for system expansion and/or transformation.

3 accuracy

The video security monitoring system should be able to monitor the protected object accurately and in real time under the site environmental conditions and the selected equipment conditions, and can clearly display and/or record the available images of the protected object according to the design requirements.

4 integrity

The system should keep the original integrity and real-time of image information and sound information, that is, no matter how the intermediate process is handled, the images and sounds finally displayed, recorded and played back should be consistent with the original scene, that is, they have the greatest similarity (subjective evaluation) with the scene in terms of color restoration, image contour restoration (gray scale), event continuity and sound characteristics, and the delay time between the real-time display of back-end images and sounds and the occurrence of on-site events should be within a reasonable range.