Mine wireless intercom and mine network telephone communication interconnection method and device

Abstract

The invention discloses a mining wireless talkback and mine network telephone communication interconnection method and device, and relates to the technical field of coal mine communication. Comprising the following steps: when a narrowband talkback module receives a first voice signal sent by at least one wireless talkback individual soldier device, triggering a mine network telephone module to automatically initiate a call to a call number; after the call is connected, converting the first voice signal into a second voice signal and transmitting the second voice signal to the called terminal; when the mine network telephone module receives and answers a third voice signal call from the calling number, the narrowband talkback module is triggered to enter a transmitting state; and converting the third voice signal into a fourth voice signal, and broadcasting the fourth voice signal to at least one wireless talkback individual soldier device. All communication media can be scheduled in a unified mode, and the communication efficiency, the coverage range and the emergency response efficiency of underground communication are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of coal mine communication technology, and in particular to a method and device for interconnecting mine wireless intercom and mine network telephone communication. Background Technology

[0002] Mining-based decentralized communication systems have become a powerful tool for emergency communication in coal mines due to their environmental adaptability, safety resilience, and convenient deployment. With the continuous expansion of mining operations and the increasing complexity of the working environment, underground communication has become a crucial link in ensuring safe production and emergency rescue. Without a stable, flexible, and rapidly recoverable communication system, information interruptions, command delays, or even loss of contact can easily occur in emergencies, seriously affecting emergency response efficiency and personnel safety.

[0003] Modern coal mines can use converged communication systems to connect various terminal devices that conform to standard protocols (such as SIP and RTP) to enable voice calls.

[0004] Most mainstream mine-use wireless intercom systems employ customized proprietary protocols, operating primarily in the UHF narrowband (e.g., 400-470MHz). This necessitates real-time communication between the ground command center and underground workers using UHF narrowband intercoms during mine accidents or routine production coordination. However, standard protocol commands and voice signals from the IP network cannot directly interact with the proprietary protocol signals of the mine-use wireless intercom system. This prevents the system from immediately connecting to the mine's IP converged communication platform, creating protocol silos and reducing the efficiency of underground communication. Summary of the Invention

[0005] Therefore, it is necessary to provide a method and device for interconnecting mine wireless intercom and mine network telephone communication to address the above-mentioned technical problems.

[0006] This invention provides a method for interconnecting mine wireless intercom and mine network telephone communication, comprising: Configure the operating parameters of the first wireless protocol to the narrowband intercom module, and configure the operating parameters of the second network protocol and the call number to the mine VoIP module; When the narrowband intercom module receives the first voice signal from at least one wireless intercom individual soldier device, the control unit triggers the mine network telephone module to automatically initiate a call to the preset calling number and establish an uplink voice channel; after the call is connected, the first voice signal is converted into a second voice signal that conforms to the working parameters of the second network protocol and transmitted to the called end; When the mine network telephone module receives and answers a third voice signal from a calling number, the control unit triggers the narrowband intercom module to enter the transmission state and establish a downlink voice channel; the third voice signal is converted into a fourth voice signal that conforms to the working parameters of the first wireless protocol, and broadcast to at least one wireless intercom individual device through the narrowband intercom module; During the call, the protocol conversion control module monitors the voice stream status in real time and controls the maintenance and release of the narrowband intercom module's transmission status according to preset rules.

[0007] Optionally, in the uplink voice channel, when the interruption of the third voice signal from the calling number is detected to exceed a first preset duration, the narrowband intercom module is controlled to release the transmission state; In the downlink voice channel, when a PTT pop-up signal is received from a wireless intercom individual soldier device or when the interruption of the first voice signal is detected to exceed the second preset duration, the mine network telephone module is controlled to hang up the current call.

[0008] Optionally, the first wireless protocol is a UHF narrowband protocol, and the second network protocol is an IP broadband protocol; the UHF narrowband protocol is a dPMR protocol or a DMR protocol, and the IP broadband protocol is a SIP protocol or a RTP protocol.

[0009] Optionally, the operating parameters of the first wireless protocol include: operating frequency band, device ID, group information, and trusted contact directory; the operating parameters of the second network protocol include: network identity parameters, call control parameters, and network and quality of service parameters.

[0010] This invention provides a mine-use wireless intercom and mine VoIP communication interconnection device, comprising: an intrinsically safe housing and a narrowband intercom module, a mine VoIP module, and a protocol conversion control module disposed inside the intrinsically safe housing. A narrowband intercom module for wireless communication with at least one wireless intercom soldier device via an intercom module antenna based on a first wireless protocol. The mine VoIP module is used to communicate with the mine's integrated communication system via a wired network based on a second network protocol. The protocol conversion control module is electrically connected to the narrowband intercom module and the mine network telephone module respectively via voice signal lines; The protocol conversion control module specifically includes: a protocol conversion gateway and a control unit; The control unit is used to control the establishment, maintenance and release of the voice channel, as well as trigger automatic calls, based on the input signals from the narrowband intercom module and the mine network telephone module. The protocol conversion gateway is used to perform bidirectional protocol conversion of voice signals transmitted between the narrowband intercom module and the mine network telephone module.

[0011] Optionally, the narrowband intercom module is a self-organizing network intercom module that supports the UHF narrowband protocol, and the mine network telephone module is a VoIP module that supports the IP broadband protocol.

[0012] Optionally, the protocol conversion and control unit also includes a SIP interface for enabling the exchange of control signals and status information between the control unit and the mine network telephone module.

[0013] Optionally, it also includes indicator lights electrically connected to the protocol conversion control module to display the operating status, network status, and call status of the protocol conversion control module.

[0014] Optionally, a 12V intrinsically safe power supply is also included to power the narrowband intercom module, the mine VoIP module, and the protocol conversion control module.

[0015] The above-described method and apparatus for interconnecting mine wireless intercom and mine network telephone communication provided by the embodiments of the present invention have the following advantages compared with the prior art: This invention introduces a protocol conversion gateway with bidirectional protocol conversion capabilities. One end of the gateway, a narrowband intercom module, is responsible for accessing and parsing signals from a decentralized intercom system using the UHF narrowband protocol. The other end, a mine network telephone module, is responsible for accessing a converged communication network based on the IP broadband protocol. Through intelligent scheduling and real-time protocol conversion by the control logic unit, a bidirectional, low-latency voice channel is successfully established between two incompatible heterogeneous networks. This technical process enables the previously closed UHF narrowband intercom voice to be converted into standard IP voice data in real time, achieving direct interconnection between underground wireless intercom terminals and IP-based terminals such as ground administrative telephones and dispatch consoles. It allows for unified scheduling of all communication media, significantly improving the communication efficiency, coverage, and emergency response efficiency of underground communications. Attached Figure Description

[0016] Figure 1 This is a system diagram of a method for interconnecting a mine wireless intercom and a mine network telephone communication in one embodiment; Figure 2 The flowchart illustrates the call-initiating function of a mine VoIP user in a method for interconnecting mine wireless intercom and mine VoIP communication in one embodiment. Figure 3 This is a flowchart illustrating the call-initiating function of a mine wireless intercom and mine network telephone communication interconnection method provided in one embodiment; Figure 4 This is a diagram of a connection system for a mine wireless intercom and mine network telephone communication interconnection method provided in one embodiment. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] 1. Technical introduction.

[0019] like Figure 1 As shown, the mine-use centerless wireless intercom conversion device is a communication device designed specifically for the mining environment. It achieves base station-free communication through self-organizing network technology and supports protocol signal conversion to ensure real-time communication for underground personnel in complex environments.

[0020] PTT (Push-to-talk) is a communication method that uses a switch to toggle between sending and receiving signals. It is commonly used in half-duplex communication channels, including two-way radio systems.

[0021] Centralized network intercom individual soldier device: A portable communication terminal designed for complex environments. It achieves base station-free communication through self-organizing network technology, supports voice functions, and is widely used in mining, emergency rescue, public safety and other fields.

[0022] 2. Implementation process.

[0023] This invention provides a method for interconnecting a mine wireless intercom with a mine network telephone, the method comprising: Configure the operating parameters of the first wireless protocol to the narrowband intercom module, and configure the operating parameters of the second network protocol and the call number to the mine VoIP module.

[0024] When the narrowband intercom module receives a first voice signal from at least one wireless intercom individual soldier device, the control unit triggers the mine network telephone module to automatically initiate a call to a preset calling number, establishing an uplink voice channel. After the call is connected, the first voice signal is converted into a second voice signal conforming to the operating parameters of the second network protocol and transmitted to the called party.

[0025] When the mine VoIP module receives and answers a third voice signal from a calling number, the control unit triggers the narrowband intercom module to enter the transmission state, establishing a downlink voice channel. The third voice signal is converted into a fourth voice signal conforming to the operating parameters of the first wireless protocol, and broadcast through the narrowband intercom module to at least one wireless intercom individual soldier device.

[0026] During the call, the protocol conversion control module monitors the voice stream status in real time and controls the maintenance and release of the narrowband intercom module's transmission status according to preset rules.

[0027] Preferably, in the uplink voice channel, when a third voice signal interruption from the calling number is detected to exceed a first preset duration, the narrowband intercom module is controlled to release the transmission state. In the downlink voice channel, when a PTT pop-up signal is received from the wireless intercom individual soldier device or when a first voice signal interruption is detected to exceed a second preset duration, the mine network telephone module is controlled to hang up the current call.

[0028] Preferably, the first wireless protocol is a UHF narrowband protocol, and the second network protocol is an IP broadband protocol. The UHF narrowband protocol is either dPMR or DMR, and the IP broadband protocol is either SIP or RTP.

[0029] Preferably, the operating parameters of the first wireless protocol include: operating frequency band, device ID, group information, and a directory of trusted contacts. The operating parameters of the second network protocol include: network identity parameters, call control parameters, and network and quality of service parameters.

[0030] A specific embodiment of the present invention is provided: Configure the narrowband intercom module of the mine-use centerless wireless intercom conversion device using the keyboard or Ethernet debugging tool. Configure the intercom call frequency band based on the UHF narrowband protocol, such as 401.25MHz, set this frequency band as group 1, the intercom module ID as 21, and add ID numbers 11 and 12 to the trusted contacts directory.

[0031] Configure the UHF narrowband protocol-based intercom call frequency band, such as 401.25MHz, for the decentralized network intercom individual soldier device using a keyboard or Ethernet debugging tool. Set this frequency band as group 1. The ID number of decentralized network intercom individual soldier device A is 11, and the ID number of decentralized network intercom individual soldier device B is 12. Add ID numbers 11, 12, and 21 to their respective trusted contact directories.

[0032] Configure the mine VoIP module of the decentralized network intercom conversion device using a keyboard or Ethernet debugging tool. This includes setting the device IP address, SIP account, call number (control center number), and other parameters that affect communication performance. For example, set the IP address to 192.168.1.101, the mine VoIP account to 8001, and the call number to 8002.

[0033] like Figure 2As shown, when the control center number or other mine VoIP phones call the centralized network intercom individual soldier device, the call will be routed to the corresponding centralized network intercom conversion device's mine VoIP circuit module. The mine VoIP circuit module can automatically answer the call. After answering, the mine VoIP circuit module triggers the PTT function of the narrowband intercom module, establishing a downlink voice channel. When the control center number speaks, the mine VoIP circuit module can transmit the voice information to the narrowband intercom module of the mine-use centralized wireless intercom conversion device, and then this module transmits it to other centralized network intercom individual soldier devices.

[0034] During a call, the mine's VoIP circuit module needs to monitor the control center's voice data in real time. When a remote network intercom device stops speaking, a margin check is performed. If there is no voice stream within one second, the PTT function of the narrowband intercom module of the mine's remote wireless intercom converter is released, giving other remote network intercom devices time to speak. When the control center VoIP device speaks again, the PTT function of the narrowband intercom module of the remote wireless intercom converter is triggered again. When the control center VoIP device terminates the call, the call ends and the PTT function of the narrowband intercom module of the remote wireless intercom converter is completely released.

[0035] like Figure 3 As shown, in the undialed state, when the operator of the mine's decentralized wireless intercom presses the PTT button to start speaking, the narrowband intercom module of the mine's decentralized wireless intercom conversion device will output voice. The mine's VoIP circuit module will monitor the interface status of the narrowband intercom module in real time. Once voice output is detected, the mine's VoIP circuit module will immediately dial the control center with a fixed mine VoIP phone number (e.g., 8002) and transmit the voice from the operator of the decentralized network intercom to the control center.

[0036] During a call, the mine network telephone circuit module of the centralized network intercom conversion device needs to perform a margin judgment on the communication status between the centralized network intercom individual device and the control center number. If a PTT pop-up message is received from the centralized network intercom individual device, the current conversation is interrupted. If there is no voice within 10 seconds, but no PTT pop-up message is received from the intercom individual device, and the control center number does not actively end the call, it is assumed that the hang-up signal was lost due to network issues, and the call will be actively disconnected and the PTT function of the internal narrowband intercom module will be released.

[0037] like Figure 4As shown, usability was tested through the following functions: (1) Function of a single-soldier device without a central network intercom actively calling a mine network phone. (2) Function of a mine network phone actively calling a single-soldier device without a central network intercom. (3) Function of single-soldier devices without a central network intercom (A and B) calling each other. (4) Function of a single-soldier device without a central network intercom actively hanging up. (5) Function of a mine network phone (SIP phone) actively hanging up.

[0038] Based on the same inventive concept, this invention provides a mine wireless intercom and mine network telephone communication interconnection device, characterized in that it includes: an intrinsically safe housing and a narrowband intercom module, a mine network telephone module and a protocol conversion control module disposed inside the intrinsically safe housing.

[0039] A narrowband intercom module for wireless communication with at least one wireless intercom soldier device via the intercom module antenna based on a first wireless protocol.

[0040] The mine VoIP module is used to communicate with the mine's integrated communication system via a wired network based on a second network protocol.

[0041] The protocol conversion control module is electrically connected to the narrowband intercom module and the mine network telephone module via voice signal lines.

[0042] The protocol conversion control module specifically includes a protocol conversion gateway and a control unit.

[0043] The control unit is used to control the establishment, maintenance, and release of the voice channel, as well as trigger automatic calls, based on the input signals from the narrowband intercom module and the mine network telephone module.

[0044] The protocol conversion gateway is used to perform bidirectional protocol conversion of voice signals transmitted between the narrowband intercom module and the mine network telephone module.

[0045] Preferably, the narrowband intercom module is a self-organizing network intercom module that supports the UHF narrowband protocol, and the mine network telephone module is a VoIP module that supports the IP broadband protocol.

[0046] Preferably, the protocol conversion and control unit also includes a SIP interface for enabling the exchange of control signals and status information between the control unit and the mine network telephone module.

[0047] Preferably, it also includes indicator lights for the protocol conversion control module, used to display the working status of the protocol conversion control module, network status, and call status.

[0048] Preferably, it also includes a 12V intrinsically safe power supply for supplying power to the narrowband intercom module, the mine network telephone module, and the protocol conversion control module.

[0049] 3. Technical effects.

[0050] 1) Adopting a fully distributed architecture, each wireless terminal has a forwarding function and can achieve autonomous pathfinding based on the connection status. It supports multi-level relay with ≥31 hops. When a single node fails, the network can be automatically reconstructed within 200ms. Traditional mine communication systems rely heavily on base stations. Once an emergency occurs and the base station cannot be used or fails, it will cause communication paralysis in the area. This design fundamentally solves this vulnerability problem. In particular, it can ensure the survivability of communication functions when a mine accident causes local network damage.

[0051] 2) A mine-use intrinsically safe embedded protocol conversion gateway was developed, implementing bidirectional protocol parsing at the physical and data link layers. This gateway detects voice stream or PTT status (press / release) to achieve bidirectional conversion between UHF narrowband protocols (such as dPMR / DMR) and IP broadband protocols (SIP / RTP). Initially, the decentralized network intercom individual soldier device uses the dPMR / DMR protocol, while the mine VoIP module uses the SIP / RTP protocol. The conversion operation includes signal reception, protocol parsing, data format conversion, and voice stream transmission, with conversion latency controlled within 50ms, meeting the real-time requirements of mine voice communication.

[0052] 3) Ultra-low power consumption design: the device consumes ≤5mA when idle. With a replaceable backup power supply, it can work continuously for more than 8 hours in disaster environments to meet emergency communication needs.

[0053] 4) This technology not only solves the long-standing problem of “inflexible wired and difficult wireless integration” in mine communications, but also builds a new generation of infrastructure for intelligent mine communications through breakthroughs in security and performance, and has verified its key value in many mine rescue operations.

[0054] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A method for interconnecting a mine wireless intercom with a mine network telephone communication system, characterized in that, include: Configure the operating parameters of the first wireless protocol to the narrowband intercom module, and configure the operating parameters of the second network protocol and the call number to the mine VoIP module; When the narrowband intercom module receives a first voice signal from at least one wireless intercom individual soldier device, the control unit triggers the mine network telephone module to automatically initiate a call to a preset calling number and establish an uplink voice channel; after the call is connected, the first voice signal is converted into a second voice signal that conforms to the working parameters of the second network protocol and transmitted to the called end; When the mine network telephone module receives and answers a third voice signal from a calling number, the control unit triggers the narrowband intercom module to enter the transmission state and establish a downlink voice channel; the third voice signal is converted into a fourth voice signal that conforms to the working parameters of the first wireless protocol, and broadcast to at least one of the wireless intercom individual devices through the narrowband intercom module; During the call, the protocol conversion control module monitors the voice stream status in real time and controls the maintenance and release of the transmission status of the narrowband intercom module according to preset rules.

2. The method for interconnecting mine wireless intercom and mine network telephone communication as described in claim 1, characterized in that, In the uplink voice channel, when the interruption of the third voice signal from the calling number is detected to exceed the first preset duration, the narrowband intercom module is controlled to release the transmission state. In the downlink voice channel, when the PTT pop-up signal of the wireless intercom individual soldier device is received or the interruption of the first voice signal is detected to exceed the second preset duration, the mine network telephone module is controlled to hang up the current call.

3. The method for interconnecting mine wireless intercom and mine network telephone communication as described in claim 1, characterized in that, The first wireless protocol is a UHF narrowband protocol, and the second network protocol is an IP broadband protocol; the UHF narrowband protocol is a dPMR protocol or a DMR protocol, and the IP broadband protocol is a SIP protocol or an RTP protocol.

4. The method for interconnecting mine wireless intercom and mine network telephone communication as described in claim 1, characterized in that, The operating parameters of the first wireless protocol include: operating frequency band, device ID, group information, and trusted contact directory; the operating parameters of the second network protocol include: network identity parameters, call control parameters, and network and quality of service parameters.

5. A mine-use wireless intercom and mine network telephone communication interconnection device based on the mine-use wireless intercom and mine network telephone communication interconnection method according to any one of claims 1-4, characterized in that, Includes: an intrinsically safe housing and a narrowband intercom module, a mine VoIP module, and a protocol conversion control module housed within the intrinsically safe housing. The narrowband intercom module is used to wirelessly communicate with at least one wireless intercom soldier device through the intercom module antenna based on a first wireless protocol. The mine VoIP module is used to communicate with the mine's integrated communication system via a wired network based on a second network protocol; The protocol conversion control module is electrically connected to the narrowband intercom module and the mine network telephone module respectively via voice signal lines; Specifically, the protocol conversion control module includes: a protocol conversion gateway and a control unit; The control unit is used to control the establishment, maintenance and release of the voice channel, as well as trigger automatic calls, based on the input signals from the narrowband intercom module and the mine network telephone module. The protocol conversion gateway is used to perform bidirectional protocol conversion on the voice signals transmitted between the narrowband intercom module and the mine network telephone module.

6. The mine wireless intercom and mine network telephone communication interconnection device as described in claim 5, characterized in that, The narrowband intercom module is a self-organizing network intercom module that supports the UHF narrowband protocol, and the mine network telephone module is a VoIP module that supports the IP broadband protocol.

7. The mine wireless intercom and mine network telephone communication interconnection device as described in claim 5, characterized in that, The protocol conversion and control unit also includes a SIP interface for enabling the exchange of control signals and status information between the control unit and the mine network telephone module.

8. The mine wireless intercom and mine network telephone communication interconnection device as described in claim 5, characterized in that, It also includes indicator lights electrically connected to the protocol conversion control module, used to display the working status, network status and call status of the protocol conversion control module.

9. A mine-use wireless intercom and mine network telephone communication interconnection device as described in claim 5, characterized in that, It also includes a 12V intrinsically safe power supply for supplying power to the narrowband intercom module, the mine network telephone module, and the protocol conversion control module.

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