Detailed discussion on the design of hospital high-definition network monitoring system

    In combination with XXX Hospital's demand for system functions, after many discussions, communications and careful research with the hospital, and combined with our company's many years of experience in implementing digital monitoring of medical systems, our company adopted a digital network structure and a new generation of network image monitoring system - AN3 (An Cube) digital matrix system to build this project and provide solutions. 

    This project is the network digital security monitoring system of XXXX Hospital. The following is the design of the whole set of XXX Hospital network monitoring system.

    Design of high-definition monitoring system for hospitals

    The hospital monitoring system adopts a digital network audio and video structure. The classroom is equipped with a network dome camera, which is connected to the floor switch through a network cable to transmit the video image back to the monitoring center. The monitoring center is built with a network digital matrix as the core and LCD monitors as display devices, as shown in the figure below.

Network system monitoring diagram

   Design Description:

    Front-end acquisition design

    A total of 130 high-definition network dome cameras are deployed in the outpatient department, inpatient building, and the surrounding areas of the hospital. They are installed in the lobby, passages, registration areas, western medicine pharmacies, Chinese medicine pharmacies on each floor of the outpatient department, the lobby, passages of the inpatient building, the hospital gate, parking lot, and surrounding areas to provide real-time monitoring of the lobby, passages, registration areas, pharmacies, medicine collection areas, and the entrances of important departments in the hospital.

    Monitoring center design

    Configured with 2 Ancube AN-IP3016D network intelligent digital matrix, each VGA output can simultaneously decode and display 16-screen D1 format video images, each digital matrix VGA signal can be split and displayed in 1, 4, 6, 7, 9, 12, 14, 16 screens, and two digital matrices can simultaneously display up to 96 D1 format video images on 6 LCD splicing TV walls. The two matrices are seamlessly linked, the system is self-contained, and the video images between them can be freely called and switched.

    The TV wall is equipped with a set of 46-inch 2*3DID LCD splicing screens, 6 AN-MP2000 splicers and 1 8-input and 8-output VGA switching matrix. Through the large-screen control system, the 2*3 LCD splicing screen can be a single screen to display any VGA signal image, or any 2*1 splicing, 2*2 splicing, 2*3 splicing, forming a format splicing display mode.

    The center is equipped with two management main control computers. One is used as the control host of the network monitoring system to manage the monitoring system and the digital matrix main control system. It can call, group, split, switch, and patrol the video images of the matrix system, and manage system parameter configuration, permissions and other system information. The operator can easily switch the video image to the monitor of the monitoring station through the real-time browsing interface for close monitoring. The other is used as a control unit to manage the function operation, configuration, information, control, etc. of the LCD splicing screen.

    AN3 network intelligent digital matrix comes with a 1000M network interface, with powerful real-time streaming media forwarding and multiple clients' simultaneous access capabilities, supporting multiple users on the LAN and the Internet to access one video at the same time, and has a single-channel video 1-to-64 forwarding function, that is, 1 video channel supports 64 different sub-control points for simultaneous access control.

    The center management system has a complete multi-level authority control system and powerful multi-level networking management capabilities, which is suitable for the construction and management of single or multiple centers. It supports smooth access, seamless cascading and unified management of multiple matrix devices.

    Fully digital technology, the use of digital technology not only simplifies the wiring installation, but also can point-to-point locate the equipment and lines based on IP to see if they are working properly, which is very beneficial for later maintenance work. At the same time, there is no need to rewire when expanding in the future, and expansion work at any location can be easily carried out through ordinary switches.

    Configure a 24-port 10/100/1000M adaptive network switch as the monitoring center network link data exchange, and form the system monitoring information network through the central network switch.

    Design of splicing screen TV wall display system

    The main screen of the Ancube LCD large-screen splicing display system is spliced ​​by 6 46-inch DID display units with a side width of 3.65mm, spliced ​​in a 2×3 manner, with 2 rows horizontally and 3 columns vertically, as follows:

LCD splicing diagram

    No. Item Specification Configuration

    146 inch DIDLCD display unit W2000

    2 Seam 7.3mm

    3Splicing scale 2 (rows) × 3 (columns) Total: 6 units

    4-unit size 1025.653mm (width) × 579.884mm (height) × 200mm (thickness)

    5Full screen size 3076.959mm (width) × 1159.768mm (height) × 200mm (thickness)

    6Full screen resolution 4098×2304 pixels

    Select any signal to enlarge the entire screen in full screen mode

LCD large screen display

    Through the matrix, you can select 12 signals at will to display them on the LCD screen in single screen mode.

Single screen display

    Select any signal for 3*3 splicing, and the remaining LCD screens will be in single-screen display mode.

Single screen display

   Coding and transmission link

    coding:

    The H.264 compression format real-time network camera is used as system storage and network encoding. The microphone is directly connected to the network camera, and after being encoded by the network camera, it is synchronously transmitted back to the monitoring center with the video.

    Transmission link:

    This solution adopts the backbone gigabit optical fiber network design. According to the distribution characteristics of the front-end network cameras, network switches are installed in appropriate weak-current rooms on each floor, and the nearest camera video is connected to the switch. In the system, the network video stream is connected to the nearest floor switch through the network cable, and finally the floor switch is transmitted back to the monitoring center through the optical fiber. It can also be transmitted back to the monitoring center through the hospital LAN.

    Central storage design

    The center is equipped with a network streaming media storage management server (the number of servers is determined by the number of front-end monitoring points and time). The network streaming media storage server adopts advanced disk array server design, supports hot-swappable redundancy technology for component hard disks and power supplies, and can replace and maintain components without shutting down the system, which improves the availability of the system. Advanced memory hot standby and memory mirroring technology also improve the availability of the system. Integrated SATA controller, supports RAID0, 1, 5; SAS model integrates 8-channel SAS controller, supports RAID0, 1, 10, and provides reliable and stable data protection solutions for massive storage. The center's network streaming media storage server supports up to 20 hard disk slots per machine, runs independently, and can seamlessly access multiple machines. The video materials in any streaming media storage server can be easily checked, played back, and downloaded through the monitoring center's main control system or authorized client system.

    Storage system capacity calculation:

    The capacity requirement for surveillance video data is relatively large. We assume that there are 200 surveillance access points, requiring the use of FULLD1 resolution (720×576), 1500Kbit/s real-time bit rate, and storage for 30 days.

    The storage data of a single channel image in one day is: 1500Kbps×3600×24/8=16200000KB

    Converted to MB: 15820MB

    The storage data of a single channel image for 30 days is: 15820MB×30=474600MB

    Converted to GB: 464GB

    The data storage capacity of 130 images for 30 days is: 464GB×130=60320GB

    Converted to TB: 59TB

    If a 1500G video hard disk is used, approximately 40 hard disks will be required.