The extension of high-altitude observation surveillance from the 1980s

Before completing the high-altitude viewing technology, from the Hangzhou saying "Watching the fire from the city God Mountain", it was possible to find a fundamental understanding of people's monitoring of fire conditions by climbing high. In particular, many centers began to use or build relatively tall buildings as early as the middle of the last century, and adopted the method of sending people to take turns on duty, using manual hand-held telescopes to climb up to monitor, and to prevent high-altitude views of urban fires. For example: the 30-meter-high fire observation tower in the Yuexiu Fire Squadron compound in Guangzhou was not cancelled until the early 1980s; the 11 existing fire observation towers in Shanghai did not withdraw from the stage of history until 1997, and are now regarded as historical Witnesses and cultural relics have been repaired and maintained; Wuhan's Guishan TV Tower, as the first-generation fire observation tower in Wuhan, has made great contributions to dispatching firefighting forces in a timely manner and extinguishing the fire. The main function of these fire observation towers, which are taller buildings in the city, is to detect the fire at the first time and notify the fire brigade to dispatch, and to monitor the dispatch status of the fire squadron, as well as the deployment of the battle and the water discharge status after arrival. high-altitude surveillance With the development of monitoring technology and high-altitude viewing technology, many manufacturers have carried out high-altitude viewing monitoring, such as maritime affairs, forest fire prevention, etc. The high-altitude viewing technology adopts the third-generation networked digital video monitoring system based on embedded video The existing network system adopts the embedded "network video server", through intelligent computer software to complete the digital processing from the front end of the monitoring point, the monitoring center to the monitoring workstation, so that the high-altitude viewing technology is more mature, the control is more convenient, and the image The acquisition clarity has also been greatly improved, and the corresponding storage space has been greatly reduced. This also lays a solid foundation for the application of high-altitude viewing technology to the field of urban fire monitoring. Compared with the first generation of analog video surveillance systems, the second generation of computer platform-based digital video surveillance (DVR) and embedded DVR surveillance systems, networked digital video surveillance based on embedded video servers has applications in existing systems. Network resources, do not need to lay optical cables and add equipment for the new monitoring system, and easily complete remote video monitoring; system expansion capability is strong, and new monitoring points can be expanded only by adding monitoring point equipment in the center of the network; low maintenance costs, network The maintenance is maintained by the network provider, and the front-end equipment is a plug-and-play, maintenance-free system; the system has powerful functions, flexible applications, and all-digital video recording is convenient for storage and retrieval; every computer in the network only needs to be installed with the client's The software can become a monitoring workstation and other features by giving the corresponding permissions. The system digitizes traditional video, audio and control signals, and transmits them on the network in the form of IP packets, completing the digitization of video/audio, system networking, application multimedia and management intelligence.