With the continuous advancement and rapid development of air transportation in China, it has a strong driving effect on the construction of airports across the province. At the same time, it also exerts a certain boosting effect on the economic and social development of the city where the airport is located. Of course, as people's acceptance of the aviation industry and air traffic flow increase year by year, airport operations must ensure safe and reliable flight and orderly aviation, and increase air transportation capacity and improve dispatch efficiency. In this way, the actual operation of the airport gradually highlights some problems, such as tight airspace resources, busy dispatching of the airport control area, the construction of an integrated transportation hub, and the rapid response mechanism of sudden weather conditions, all of which have caused the airports in operation to continue to be exposed. A variety of tests. This article refers to the address: http:// With the continuous advancement and rapid development of air transportation in China, it has a strong driving effect on the construction of airports across the province. At the same time, it also exerts a certain boosting effect on the economic and social development of the city where the airport is located. Of course, as people's acceptance of the aviation industry and air traffic flow increase year by year, airport operations must ensure safe and reliable flight and orderly aviation, and increase air transportation capacity and improve dispatch efficiency. In this way, the actual operation of the airport gradually highlights some problems, such as tight airspace resources, busy dispatching of the airport control area, the construction of an integrated transportation hub, and the rapid response mechanism of sudden weather conditions, all of which have caused the airports in operation to continue to be exposed. A variety of tests. This will provide a complete video command and dispatch system for the airport by means of advanced technical means, which will greatly assist the airport security construction and shipping dispatch. The airport video command and dispatch system will serve the airport in a multi-faceted manner. On the one hand, when various security problems occur in the airport monitoring area, the system will monitor display, alarm linkage, dispatch calls, place video, etc. During the shipping dispatch, the system will display images such as runways, taxiways, aprons, etc., multi-level scheduling, dispatching calls, and vehicle personnel positioning. In addition, when sudden situations occur, such as heavy rain, snow or fog, the visual command and dispatch system will also serve as an important platform for multi-level coordination and rapid emergency command, rationally dispatch personnel and vehicles in the airport control area, and reduce the airport. Confusion. In response to the above requirements, how to build a video command and dispatch system with intelligent mechanism for the airport, this system architecture must fully consider the accessibility of diversified data information and the integration of multiple applications, not just multiple The simple superposition of the video application subsystem is a highly integrated integration of video surveillance, command and dispatch, image intelligence analysis, voice scheduling, video conferencing, alarm linkage, electronic map, positioning patrol, data information intercommunication and other functions. The system can realize unified command and centralized management. From the technical realization, the architecture of the airport video command and dispatch system will be based on the IP network, based on the application of the open softswitch technology system, using distributed control structure and high-definition MPEG-4/H.264 digital video. The coding technology fully follows the layered, fully open architecture of Next Generation Network (NGN), supports the standard SIP protocol and H.323 protocol, and forms an open, complete and standardized softswitch architecture to realize service control and Business bearers are separated from each other. At the same time, it provides a standard secondary development interface, which is convenient for third-party application integration and easy to expand and upgrade. Realize the customization of the application, provide applications such as video command, video conferencing, video surveillance, video alarm linkage, etc., and integrate and integrate with other business systems such as GIS, DSS, GPS, etc. Architecture diagram In the system function architecture, the various image and video resources of airport security and shipping scheduling are fully integrated, and the video dispatching command, video surveillance, video conferencing, intelligent analysis, voice scheduling, data collection and integration are integrated, and the system structure design and deployment are also integrated. According to the security structure of the airport and the control and dispatching organization structure, the security and dispatching integration application can be realized. The security management can conduct security monitoring and security management throughout the airport, and browse and deploy the monitoring site at any time to keep track of the scene. As the tower dispatching command center, the command and dispatch of the airport control area can be carried out longitudinally. In response to an emergency, as the main command center of the airport can simultaneously see the scene of the incident, and carry out remote audio and video two-way dispatching and commanding with all departments responsible for all aspects of the operation of the airport and the emergency command communication vehicle; You can use the video conferencing system to conveniently and intuitively deploy your work, listen to work reports, and see relevant documents, charts, pictures, etc. while seeing the minutes of the venue and hearing the sound of the venue. In the process of system construction, the airport video command and dispatch system adopts a network-based distributed control structure, which can access the current international and domestic multi-factory video surveillance systems and achieve centralized monitoring and unified management; support video conferencing functions, and The standard H.323 video conferencing system realizes interconnection and intercommunication; can support voice telephony scheduling and realize two-way voice communication with scheduled telephones such as fixed line and mobile phone in the command and conference process; and can access display data of various application systems and Achieve centralized display and centralized supervision. Ultimately, it achieves all-round access, versatile scheduling, versatile convergence and omnipotent presentation of various video and voice systems. In the specific deployment, the whole system is connected to the monitoring and control center of the general command and dispatch center, the tower dispatching center, the security monitoring center and the airport through the internal network of the airport, and is divided into the main control command and dispatch center subsystem, the sub-control command and dispatch center subsystem, Monitor the front-end subsystem and structure as shown below. As shown in the figure, the first-level master command and dispatch center subsystem deployed in the airport command and dispatch center includes the core integrated video switch, the core voice dispatching exchange server, the streaming media forwarding server, the command recording server, the alarm server, and the intelligent analysis server. The main functions of the fax server and recording server are: to realize the signaling, scheduling control, authority and level management of video and telephone; video stream, voice stream, data stream, intelligent analysis, alarm information forwarding, data information storage and equipment maintenance management. .
Silicon Rubber Insulated Power Cable
1. Introduction and Application
This product is suitable for as connection cable of fixed laying down power transmission line or movable electric equipment with 0.6/1kv of AC rated voltage or below.Like Rubber Cable,frame retardant cable,Mica Tape Insulated Cable. It features heat radiation resistant, cold resistant, acid and alkali resistant, corrosive gases resistant, waterproof and so on, flexible cable structure , constant electric performance at the environment of high temperature(high and cold),outstanding anti-ageing performance, long life.. It is wide used for many industries such as metallurgy, electric power, petrochemical, electronic and automobile manufacturing, etc.
2. Product standard: Enterprise standard
The test of fire retardant and fireproof characteristic should be carried out in accordance with GB/T18380.3-2001, GB/T19216.21-2003.
3. Operating characteristics
a. The rated voltage: U0/U 0.6/1kv
Max. operating temperature: 180℃
Min. ambient temperature:-60℃
b. Laying temperature of cable not less than -25℃
c. Permissible bending radius of cable: Min. 10 times of diameter
4. Type and Designation
Type: YGC, YGCR, YGCP, YGC22, YGG, YGGR, YGGP, YHXG
Designation:
YGC: Silicon rubber insulated and sheathed power cable
YGCR: Silicon rubber insulated and sheathed movable flexible power cable
YGCP: Silicon rubber insulated and sheathed copper wire screened power cable
YGC22: Silicon rubber insulated and sheathed steel tape armored power cable
YGG: Silicon rubber insulated and sheathed installation line
YGGR: Silicon rubber insulated and sheathed movable installation line
YGGP: Silicon rubber insulated and sheathed copper wire braided screened installation line
Remarks: if in front of type of fire retardant silicon rubber cable adds ZR, if in front of type of flame retardant silicon rubber cable adds ZR, copper wire in conductor line core may be tin electroplating.
5. Main performance
â‘ DC resistance of finished cable conformity with GB/T3956.
② Insulation resistance is not less than 100MΩ·km at 20℃..
â‘¢ Cable withstands the test of AC 50Hz 3.5kV for 5 min, without breakdown.
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