Integrated Solution to Distributed Audio & Video System

2020-06-15 11:18:24 Guangzhou Xunkong

Overview of the Project

This project is to build the intelligent audio and video system for a command center complex. There are four regions: The Duty Room on the first floor (10 meters long, 10 meters wide, 3.5 meters high), the Command Center on the second floor (15 meters long, 12 meters wide, 4 meters high), the Conference Room on the third floor (12 meters long, 9 meters wide and 3.5 meters high) and the Leadership Office on the third floor (5 meters long, 6 meters wide, 3 meters high). It is required that all audio and video signals in the offices on the third floor can be interchangeable and seamlessly switched, and the audio and video signals of each area can be watched and controlled in the Leadership Office.

Goal of the Project

To design and build the intelligent command center that supports information interchange, it adopts the distributed audio & video signal and control signal transmission technology of Xunkong SVS brand to establish an efficient and practical real-time command system. With this distributed signal transmission and control system, the audio and video signals in multiple regions can be interchanged and shared with each other, and the equipment in different regions of the project can be flexibly and freely controlled, which can finally unify and integrate the management and control of multiple signals.      

1. Overview of Distributed Signal Transmission and Control System

With rapid development of the current high-definition video technology and network technology, they are applied in more and more industry and environment. To meet the requirements of modern intelligent conference room, this project applied the distributed signal transmission and control system (D3050) independently researched and developed by Xunkong. Based on network, the system integrates the audio and video signal transmission and seamless switch technology, intelligent control technology, KVM switch and transmission technology, high-definition image processing technology and digital network communication technology. And it is quite convenient to flexibly connect audio and video signals, control signals and computer KVM signals in each area in the network to the system, which is more convenient and efficient than traditional wiring installation and after-sales maintenance.

2. Distributed System Architecture Diagram


3. Application Diagram of the Project


4. The Display System Scheme for Offices in Different Floors

4.1   In the duty room on the first floor, five 65-inch LCD televisions for main display devices to display video signals from each floor and each area in real time. The system topology diagram is as follows:


4.2 The command center on the second floor applied 20 pieces of high-definition LCD display unit (D5001) in 46 inches with 3.5 mm ultra narrow splicing gap to form an LCD splicing display screen. Besides, there were two LCD displayers designed for each seat, 1 for a local computer screen, and the other for access to external distributed signal. The system topology diagram is as follows:


4.3 The meeting room on the third floor applied four 55-inch 3.5mm ultra-narrow LCD splice screens (D5002) as the main display, and two 70-inch LCD TVs as the auxiliary display.  The system diagram is as follows:


4.4  The Leader's Office has a 70-inch LCD TV as the main display, which can visualize the video and audio signal from different areas. The system diagram is as follows:


5.   Visual Signal Management Platform of Distributed System


Based on gigabit network, the management platform adopts the industry-leading distributed processing architecture, which transmits signals through digital encoding and decoding and uses touch screen as the control terminal to drag and drop various audio and video signals in the system to any distributed output terminal for display. Besides, it supports preview and grouping of the image signal, and coordinates with the large screen to realize image splicing and roaming, overlay and window size scaling and stretching. It supports real-time preview of input source signal image, window enlargement preview and virtual screen. It can also monitor the signal image displayed on each screen in real time, and support one-to-one or one to many drag-and-drops for seamless signal switching.

6.   Schematic Diagram for Connecting Audio and Video Signal of the System


The sound reinforcement system of command center and conference room is designed according to the national sound reinforcement standard level 1 of Functional hall, adopting professional array speaker (D2022), which is dispersed and mounted on the wall. The array speaker has artistic configuration and uniform sound field coverage, which can offer satisfactory sound effect and sound pressure level for the command center. Besides, the system has automatic tracking function—applying time-keeping microphone built with OLED display screen as a speaking unit and HD1080 as meeting camera to track the attendee in a presentation, which is convenient for conference room, command center and duty room to hold interactive video meetings.


7.  Schematic Diagram of KVM Signal Switch in the System


It is convenient for the managers of each floor to take over and control the computers in each area.

8.  Central Control Diagram for the System


With the management system at disposal, the personnel on the site can use the wireless touch screen to manage and control the equipment and signals in various areas. It manages the large screen image display, turns on/off the equipment, adjusts the volume, control the lights, supports KVM management, etc. The system can add distributed encoding and decoding terminals at will, which is convenient for maintenance and upgrading in the future.


The distributed system will create an advanced, intelligent, efficient and stable signal integrated management platform for users.


(Duty Room at the 1st Floor)

(Command Center at the 2nd Floor)

(Meeting Room at the 3rd Floor)

Products of Distributed System