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The mine broadcasting communication system is an advanced broadcasting and scheduling system based on the LPPBK soft-switch platform, featuring strong interoperability and excellent scalability. It employs digital technology, single-chip microcomputer encoding/decoding technology, and advanced software programming techniques to develop a digital addressable mine intelligent emergency rescue voice system. This system integrates safety announcements, scheduling and command, safety monitoring, and public voice functions, representing a new generation of digital voice systems.
The mine broadcasting communication system consists of both above-ground and underground equipment.
Underground equipment mainly includes underground switches, main speakers, secondary speakers, and DC regulated power supplies, with explosion-proof phones as an option.
Above-ground equipment primarily comprises a broadcasting scheduling console, broadcasting server, switch, IP phones, voice gateways, and local programmed switches, with paging machines and broadcasting intercom terminals as options.
System Overview
The system primarily broadcasts emergency real-time announcements, background music, educational content, and other audio from the ground scheduling center to underground tunnels, parking lots, rest rooms, mining faces, and other locations. It provides music and safety education for underground workers, as well as safety evacuation notifications in emergencies. Simultaneously, it enables two-way communication between production sites and the ground scheduling room. Explosion-proof phones can be added underground, and the existing phone system on the ground can be integrated with the telephone operator's network to allow mutual calling.
（1）Integration: The voice broadcasting system is designed and developed based on the SIP protocol. Voice broadcasting speakers only need to register to the voice broadcasting system server via the IP network to function. It is compatible with scheduling systems and wireless communication systems, and video broadcasting can be added later.
（2）Click-to-Broadcast: The voice broadcaster can broadcast to selected speakers by clicking on the broadcast icons in the broadcasting control software interface.
（3）Broadcast Group Division: The voice broadcasting system supports dividing speakers into groups based on actual needs (e.g., by region). Broadcasting to a specific group of speakers can be easily achieved by clicking on the broadcast control interface.
（4）Broadcast Preset: The voice broadcasting system server supports playing pre-set broadcast recordings on specific speakers at scheduled times.
（5）Full-Duplex Intercom: The system supports full-duplex intercom broadcast stations, enabling full-duplex communication between speakers and the broadcasting room. Speakers with dialing button functions also support full-duplex voice intercom between speakers.
（6）One-Click Call: In emergencies, the call button on the speaker allows for a one-click direct call to the broadcasting room to report underground situations to the scheduling center.
（7）Graphical Broadcasting Console: The voice broadcasting system features intuitive graphical broadcasting software, providing clear visibility of terminal information and status. Broadcasting can be initiated with simple clicks.
（8）Speaker Status Monitoring: The voice broadcasting system displays the status of all speakers (online/offline, broadcasting/not broadcasting, etc.).
（9）Broadcast Recording: The voice broadcasting system supports recording broadcast content to ensure strict control over the content.
（10）Telephone Broadcasting: The broadcasting server has rich telephone interfaces (E1, analog interfaces) that can connect with analog telephone switches, allowing broadcasts to be made through authorized phones.
（11）Environmental Monitoring: The voice broadcasting system can monitor the surrounding environment through full-duplex conversations. It also features broadcast volume control and automatic volume memory.
（12）Transmission Medium: Based on the current situation of mines and application development requirements, the system flexibly utilizes optical fiber, network cables, or hybrid transmission media for networking.
