Time division multiple access technology-based communication system for transmitting air situation and disaster situation early warning information

Abstract

The invention discloses a time division multiple access (TDMA) technology-based communication system for transmitting air situation and disaster situation early warning information. In the system, early warning information of various types of alarms such as air defense, disaster prevention and the like is transmitted by using the TDMA technology and a distributed network topological structure; meanwhile, message communication, data communication and acoustic code word communication are performed; and alarm information covers areas such as buildings, pits, tunnels, underground stores and the like by using various alarm information transmission technologies. The aims of quickly and reliably transmitting and returning various types of early warning information, reporting the various types ofalarm information and transmitting various types of service are fulfilled. The system has the function of quickly transmitting and distributing the various types of early warning information such as air defense, flood defense, shock resistance, fire prevention, flood discharge and the like, and can realize quick and accurate information transmission and all-around coverage of the alarm information, so that the alarms are reported without miss points or blind points, and real-time property, accuracy, high efficiency and all-around property of a civil air defense alarm are improved.

Description

technical field [0001] The invention relates to the field of information technology, in particular to a communication system for sending air disaster early warning information based on time division multiple access technology. Background technique [0002] The typical existing technology is a combination of star and tree topology using two-level control and three-level networking, an integrated alarm control system and an alarm distribution control system that use wireless frequency division (FM) multi-channel control. [0003] The comprehensive alarm control system is mainly composed of three parts: central station, intermediate station and terminal station. Among them, the central station includes computer, central controller, control software, encryption software, cable extension unit and antenna feeder system, etc.; the configuration of the intermediate station is basically the same as that of the central station; the terminal station includes electroacoustic electric al...

AI Technical Summary

Problems solved by technology

[0005] Existing air defense warning system means and pattern are single, audio coverage has blind spot, it is difficult to distinguish warning type and problems such as power outage can not be used, and existing this kind of warning system mainly has following drawbacks: the one, once central station or intermediate station break down ( For example, if it is destroyed), the terminal station cannot receive the signal and generate an alarm action; the second is that the types of alarms are limited. At present, the pre-air raid alarm, air raid alarm, and air raid release alarm used by the civil defense department define the audio format standard. Various disaster alarms such as typhoon alarms, tsunami alarms, flood control alarms, flood alarms, debris flow alarms, fire alarms, earthquake alarms, chemical accidents, etc. cannot be identified through sound discrimination; Distinguish the specific content and nature of the message; fourth, the terminal station did not feed back the signal to the central station, causing the central station to not know which terminal stations have carried out alarm processing, and which terminal stations have not carried out alarm processing, thereby affecting the alarm effect; fifthly, The coverage area of ​​the alarm information is limited, and the alarm information cannot be released in places with signal blind spots (such as "buildings", "tunnels", "tunnels", "underground stores" and other areas)

Images