Emergency Lighting
Fire emergency lighting systems mainly include emergency lighting, emergency exit signs, and indicator lights. They are installed to guide trapped personnel to evacuate or to facilitate firefighting and rescue operations after the normal lighting power is cut off during a fire. However, routine inspections have revealed many problems in the selection, installation, and use of fire emergency lighting fixtures. Therefore, the proper selection of power supply control methods and wiring methods for emergency lighting systems, as well as proper daily maintenance, directly affect the effectiveness of fire emergency lighting systems.
Broadband Visualization
In recent years, my country has experienced a high frequency and large scale of sudden disasters, with increasing impacts on the economy and society, drawing significant attention from society and government departments at all levels. After a disaster, in the extremely complex disaster scene, the ability to quickly and promptly establish an on-site emergency communication system to transmit large amounts of data, images, voice, and video from the disaster site to the rear, and to efficiently direct on-site rescue personnel, becomes particularly important. Traditional emergency communications have played a significant role in major events over the years, but their shortcomings have also become apparent. These include slow speed, lack of large-scale high-speed broadband wireless networking capabilities, small communication capacity, narrow bandwidth, weak video image capture and real-time transmission capabilities, long activation times, low reliability, and inability to meet the basic requirements of emergency rescue communications such as portability, flexibility, rapid deployment, and ease of maintenance. Furthermore, the lack of a unified, open, and interoperable platform among different communication operators further exacerbates these issues. With the establishment of the IEEE 802.16e and IEEE 802.16m mobile WiMAX standards, WiMAX technology, due to its high-speed access rate, can provide interoperability and complementarity with other 3G/4G satellite communication systems and ultra-wideband communication systems. Therefore, mobile WiMAX technology has a very promising future as a new communication system platform for disaster relief.
When the roadbed infrastructure is intact or only minimally damaged, and the existing communication conditions cannot meet the communication command requirements at the disaster relief site, emergency communication vehicles based on mobile WiMAX can be used to quickly reach the site and interconnect with the existing core communication network. This supports uninterrupted wireless broadband access applications under large-scale, high-speed movement, meeting the needs of data scheduling, mobile video surveillance, vehicle and personnel positioning, and emergency communication for mobile command vehicles. This approach features fast networking speed, high reliability, high transmission rate, and low transmission cost. It not only meets the data exchange needs between on-site rescue personnel but also maintains high-bandwidth, uninterrupted communication with the rear command center.
