Multi-area digital broadcast talkback communication system for nuclear power station gas coat

Abstract

The invention discloses a multi-zone digital broadcast talkback communication system for a nuclear power station gas coat, which is used for gas coat communication. The system comprises a communication host module and a plurality of zone communication stations in communication connection with the communication host module; the communication host module comprises a bus backboard unit, a main control unit and a plurality of zone communication units; the main control unit outputs each sub-power supply of the required specification after performing first processing on the connected main power supply, and the bus backboard unit performs optimized selection power supply after receiving each sub-unit. The multi-area digital broadcast talkback communication system for the nuclear power station gas coat, disclosed by the invention, is provided with the special communication host module with analog, digital and SIP (Session Initiation Protocol) full external line relays, the digital broadcast line interface and the specially designed broadcast unit, so that the defects in the prior art are overcome.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant gas suit communication, and in particular relates to a multi-region digital broadcast intercom communication system used for nuclear power plant gas suits. Background technique [0002] The air suit system is an important special system for nuclear power plants to prevent tritium. It consists of two parts, one part provides positive pressure fresh air, and the other part provides voice communication. The voice communication part is the air suit communication system, which is used to provide Staff provide voice communication. [0003] But the existing gas suit communication system used in nuclear power plants has the following disadvantages: [0004] 1. Pure software radio intercom system [0005] The host of this broadcast intercom system is a pure software system based on an operating system, for example, the application number is CN201810605132.5, and its technical solution disclos...

AI Technical Summary

Problems solved by technology

[0007] The host of this broadcast intercom system is an IPPBX or PBX system, which is combined with a power amplifier and an audio terminal to form a broadcast intercom system. For example, the application number is CN201611110887.5. Switcher, terminal, multi-channel audio bus and telephone relay module, the audio bus is connected to the central bus switcher, and the audio bus is connected with bus sockets at intervals, the central bus switcher is provided with the telephone relay module, the terminal is connected to the bus socket", which has the advantages of high stability, strong compatibility, and strong expandability, but the disadvantages are also obvious: 1) the broadcast extension line of the PBX host is an analog telephone line, with poor load capacity, Poor security; 2) Although the host of IPPBX can use IP channel to connect to the broadcasting terminal, its real-time and security are also compromised, and it is not suitable for the application places that require high security requirements for information exchange;

[0008] 3. Hostless broadcast intercom system

[0009] This type of system adopts a bus-type + repeater network, for example, the application number is CN201620631436.5, and its technical solution discloses "a broadcast intercom system without a host, including an I2C communication bus, a communication channel for transmitting voice information, and a power line And multiple telephone stations, each telephone station uses the I2C communication bus as the physical layer to build a bus-type communication network, transmits various control command information through the I2C communication bus to establish a call, and transmits voice information through the communication channel, the system every 30 telephone stations Set up a relay amplifier, the first station of the system is set as the main control station, and the others are Mandarin stations. After the system is initialized, the master station assigns addresses to other stations on the line through the I2C communication control circuit. The biggest advantage It is low cost and convenient to set up the system, but the shortcomings of this networking method are also very obvious, such as poor scalability, can only be used alone, and cannot be compatible with third-party networks. Using repeaters to expand will increase communication delays and line attenuation. thereby affecting the communication quality

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