1、 System Design

　　1. Requirement analysis

1) The front-end uses SDI high-definition cameras and ball cameras, totaling 8 power stations;

2) Each power station has two high-definition white light high-speed dome cameras and one high-definition infrared hemisphere, with a total of three points;

3) Each power station uses a four-way SDI optical transceiver with an Ethernet interface. The SDI interface transmits SDI high-definition front-end, while the Ethernet interface transmits information about temperature, humidity, and other related detection equipment in the power station;

4) The center uses an SDI video distributor to store SDI videos on one channel for SDI's DVR and on the other channel for the Red Apple PE90 high-definition digital matrix on a 9-channel splicing wall;

5) 4-channel VGA displays the temperature and humidity of the power station (computer display).

　　2. System Architecture Diagram

1) The entire video surveillance system adopts a high-definition SDI digital architecture form;

2) The front-end monitoring point cameras adopt high-definition SDI spherical cameras and infrared high-definition SDI hemispherical cameras according to different environmental requirements. SDI videos are directly connected to SDI optical transceivers;

3) Front end configuration with 4 SDI optical transceivers (with IP ports) responsible for connecting SDI camera videos and transmitting them to the center through fiber optic cables;

4) The temperature, humidity and other detectors at the front end are directly connected to the SDI optical transceiver through 485/422 bus communication and transmitted to the center;

5) The monitoring center is equipped with a high-definition digital matrix that supports mixed signal input: high-definition video signals from different interfaces such as HDMI/DVI/VGA/AV/SDI, as well as digital video signals transmitted over the network (H.264/RTP), can be simultaneously aggregated and accessed. When outputting a large screen, functions such as splicing, roaming, stacking, and transparency adjustment can be performed;

6) The center is equipped with an SDI optical transceiver, which directly outputs high-definition SDI video to the SDI input board of the high-definition digital matrix, and at the same time, outputs it to the SDI hard disk recorder for storage via loopback;

7) The temperature and humidity chart displayed on the workstation configured in the center is output via VGA (or HDMI) to the VGA (or HDMI) input board of the high-definition digital matrix, and can be switched to the large screen display through the main control keyboard (or PC);

8) The center is equipped with a 3X3 splicing screen to display various types of video images.