Mine monitoring communication system and method

Abstract

The present invention discloses a mine monitoring communication system and method, belonging to the field of wireless communication technology. The mine monitoring communication system comprises: a radio frequency transceiver, a first node, a second node and a third node; the radio frequency transceiver is deployed in a vertical mine tunnel; the first node is deployed at a preset monitoring position in the mine; the second node is deployed on a wearable device; the third node is deployed at a transfer position between the radio frequency transceiver and the first node, and between the radio frequency transceiver and the second node; the present invention utilizes the first node and the second node to monitor static and dynamic physical quantities respectively and transfers through the third node to ensure comprehensive monitoring in a complex mine environment; data transmission and status confirmation between nodes are realized during uplink and downlink communication, thereby enhancing the reliability and coverage of communication, ensuring the accuracy and reliability of data, and improving the overall stability; and solving the problems of limited signal transmission distance and severe signal attenuation in a mine environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of wireless communications, and more specifically, relates to a mine monitoring communication system and method. Background Art

[0002] As mining continues to expand in scale and depth, the mine environment has become more complex and dangerous, posing numerous threats to miners' safety. Traditional mine monitoring methods rely primarily on wired communication networks or manual patrols, but these methods present numerous challenges due to the geographical constraints of mines. For example, wired network deployment is complex and costly, and changes in mine structure can easily damage lines, impacting communication stability. Furthermore, manual patrols are inefficient, produce inaccurate data, and lack real-time feedback, making them inadequate for modern mine management.

[0003] To improve the real-time and reliability of mine monitoring, mine monitoring systems based on wireless communication technology have been widely researched and applied in recent years. However, existing wireless communication systems face technical challenges in mines, such as severe signal attenuation and limited communication distance, resulting in suboptimal application in complex mine environments. In such enclosed and obstructed environments, signal propagation is severely affected by geological structures, resulting in unstable communication quality and difficulty in achieving effective coverage and continuous monitoring.

[0004] Therefore, how to build an efficient and wide-coverage monitoring and communication system in a mine environment has become a technical problem that needs to be solved urgently in the field of mine safety management. Summary of the Invention

[0005] In response to the above-mentioned defects or improvement needs of the prior art, the present invention provides a mine monitoring communication system and method, which aims to solve the technical problems that the signal propagation in existing closed mines is seriously affected by the geological structure, the communication quality is unstable, and it is difficult to form effective coverage and continuous monitoring.

[0006] To achieve the above objectives, according to one aspect of the present invention, a mine monitoring communication system is provided, comprising:

[0007] Radio frequency transceivers are deployed in vertical mine tunnels;

[0008] The first node is deployed at a preset monitoring location in the mine;

[0009] The second node is deployed on the wearable device;

[0010] a third node, deployed at a transfer position between the radio frequency transceiver and the first node, and further deployed at a transfer position between the radio frequency transceiver and the second node;

[0011] in,

[0012] The first node transmits the working status and static physical quantity collected by itself to the radio frequency transceiver via the third node during uplink communication, and receives communication status confirmation data transmitted by the radio frequency transceiver via the third node during downlink communication;

[0013] The second node transmits its collected working status and static physical quantities to the RF transceiver via the third node during uplink communication, and receives communication status confirmation data transmitted by the RF transceiver via the third node during downlink communication.

[0014] In one embodiment, the first node is configured to transmit the collected working status and static physical quantity to the radio frequency transceiver in the form of a first data stream during uplink communication; the second node is configured to transmit the collected working status and static physical quantity to the radio frequency transceiver in the form of a second data stream during uplink communication; the first data stream form and the second data stream form both include: communication rejection data, communication request data, and monitoring data;

[0015] Among them, the communication rejection data indicates that the current node is in a dormant state and has no communication demand; the communication request data indicates that the current node is in a working state and requests the RF transceiver to reserve communication resources; the monitoring data in the form of the first data stream is the static physical quantity monitored by the first node; the monitoring data in the form of the second data stream is the dynamic physical quantity monitored by the second node.

[0016] In one embodiment, the packetized data frame corresponding to the first data stream format includes:

[0017] The pilot signal includes: a first identity number determined by the order in which the first nodes join the system and a first training signal for detecting a channel state;

[0018] A frame control field including communication rejection data or communication request data;

[0019] The sub-control field contains an identifier indicating the data type of the information frame that follows it;

[0020] Information frames, including monitoring data;

[0021] Check frame.

[0022] In one embodiment, the packetized data frame corresponding to the second data stream format includes:

[0023] The pilot signal includes: a second identity number representing the identity information of the wearer corresponding to the wearable device and a second training signal for detecting a channel state;

[0024] A frame control field including communication rejection data or communication request data;

[0025] The sub-control field contains an identifier indicating the data type of the information frame that follows it;

[0026] Information frames, including monitoring data;

[0027] Check frame.

[0028] In one embodiment, the first node and the second node are both configured to receive communication status confirmation data transmitted by the radio frequency transceiver in the form of a third data stream during downlink communication; the third data stream includes communication request data, positive feedback data, and negative feedback data;

[0029] The communication request data is used to indicate that the radio frequency transceiver requests communication from the first node or the second node, and confirms an idle frequency band according to the current channel status to ensure that the corresponding node can join the idle frequency band.

[0030] In one embodiment, the packaged data frame corresponding to the third data stream format includes:

[0031] A pilot signal including a third identity number and a third training signal, wherein the third identity number and the identity number of the radio frequency transceiver are determined by the location of the radio frequency transceiver, and the third training signal is used to detect a channel state;

[0032] Frame control field, including communication request data;

[0033] Information frame, including positive feedback data or negative feedback data;

[0034] Check frame.

[0035] In one embodiment, the optimization problem corresponding to the deployment position of the third node is solved with the communication connection between the RF transceiver and the third node and the communication connection between the third nodes as constraints, and the communication coverage range as the optimization target to obtain the deployment position of the third node.

[0036] In one embodiment, the first node and the second node each include a plurality of radio frequency switches tuned to different frequency bands, and integrate an energy harvesting circuit and a programmable data processing module.

[0037] In one embodiment, the third node integrates a passive reflective array and a programmable data processing module.

[0038] According to another aspect of the present invention, a mine monitoring communication method is provided, comprising: utilizing the above-mentioned mine monitoring communication system to perform uplink communication and downlink communication.

[0039] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0040] (1) The present invention provides a mine monitoring communication system, comprising: a radio frequency transceiver, a first node, a second node and a third node; the radio frequency transceiver is deployed in a vertical mine tunnel; the first node is deployed at a preset monitoring position in the mine; the second node is deployed on a wearable device; the third node is deployed at a transfer position between the radio frequency transceiver and the first node and at a transfer position between the radio frequency transceiver and the second node; the mine monitoring communication system provided by this solution utilizes the first node and the second node to monitor static and dynamic physical quantities respectively, and transfers through the third node to ensure comprehensive monitoring in a complex mine environment; data transmission and status confirmation between nodes can be realized during uplink and downlink communications, thereby enhancing the reliability and coverage of communication, ensuring the accuracy and reliability of data, and improving the overall stability; and solving the problems of limited signal transmission distance and severe signal attenuation in a mine environment.

[0041] (2) In this solution, the first node is used to transmit the working status and static physical quantities collected by itself to the radio frequency transceiver in the form of a first data stream during uplink communication; the second node is used to transmit the working status and static physical quantities collected by itself to the radio frequency transceiver in the form of a second data stream during uplink communication; the advantage of such a design is that through the classified transmission of data streams, efficient separation and transmission of data is achieved, the communication efficiency and reliability of the system are enhanced, and the adaptability and scalability of the system in complex mine environments are improved.

[0042] (3) The pilot signal in the packaged data frame corresponding to the first data stream form of this scheme includes: a first identity number determined by the order in which each of the first nodes joins the system and a first training signal for detecting the channel status; the advantage of such a design is that it has an accurate identity recognition function, can effectively monitor the channel status, ensure signal synchronization, optimize spectrum resource allocation, improve the system's anti-interference ability, and quickly diagnose fault conditions to adapt to the dynamic mine environment.

[0043] (4) The pilot signal in the packaged data frame corresponding to the second data stream form of this solution includes: a second identity number representing the identity information of the wearer corresponding to the wearable device and a second training signal for detecting the channel status; the advantage of such a design is that it enhances personalized monitoring and real-time location tracking capabilities, and improves the response efficiency in emergency events. Through real-time feedback on the channel status, the system can dynamically adjust the transmission strategy, optimize transmission efficiency and communication reliability, and ensure stable wireless communication in the complex environment of the mine.

[0044] (5) The communication request data in the third data stream form described in this solution is used to indicate that the RF transceiver requests communication from the first node or the second node, and confirms an idle frequency band based on the current channel conditions to ensure that the corresponding node can join the idle frequency band. The advantage of such a design is that the RF transceiver can actively manage communication resources, optimize frequency band utilization, reduce channel interference and conflicts, and achieve stable communication transmission. At the same time, the system can flexibly switch communication nodes, balance the load, avoid communication interruptions caused by channel congestion, and improve the overall communication performance and stability of the system.

[0045] (6) The pilot signal in the packaged data frame corresponding to the third data stream form described in this solution includes: a third identity number and a third training signal, wherein the third identity number and the identity number of the RF transceiver are determined by its location, and the third training signal is used to detect the channel status; the advantage of such a design is that this design can achieve precise positioning of the RF transceiver, and dynamically adjust the communication strategy according to environmental changes, optimize transmission quality, enhance anti-interference capability, and simplify the fault diagnosis process.

[0046] (7) The optimization problem corresponding to the deployment position of the third node described in this solution is solved by taking the communication connection between the RF transceiver and the third node and the communication connection between the third nodes as constraints, and taking the communication coverage range as the optimization goal to obtain the deployment position of the third node. The advantage of such a design is that the position of the third node is adjusted by using the optimization algorithm to ensure the maximization of the communication coverage range, thereby further improving the real-time performance and coverage accuracy of the monitoring system.

[0047] (8) The first and second nodes described in this solution are equipped with multiple radio frequency switches tuned to different frequency bands, and are integrated with energy harvesting circuits and programmable data processing modules. The advantage of such a design is that it provides flexible frequency band switching capabilities, avoids communication congestion, and improves the communication efficiency and reliability of the system. The energy harvesting circuit reduces dependence on external power sources and is particularly suitable for environments such as mines where energy supply is difficult. The programmable data processing module enhances the data processing capabilities of the node, helps reduce the burden on the central processing unit, and improves the intelligence level and processing efficiency of the system.

[0048] (9) The third node described in this solution includes a passive reflective array and a programmable data processing module; the advantage of such a design is that it enhances the communication range, reduces power consumption, improves transmission efficiency by pre-processing data, and increases the flexibility and intelligence of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 Schematic diagram of the structure of the mine monitoring communication system provided in Example 1 of the present invention;

[0050] Figure 2 This is a schematic diagram of the working process of the mine monitoring communication system provided in Example 1 of the present invention;

[0051] Figure 3 is a schematic diagram of the first and second data frame formats provided in Example 1 of the present invention;

[0052] Figure 4 A schematic diagram of a mine monitoring and early warning system provided in Example 3 of the present invention;

[0053] Figure 5 Schematic diagram of an environment in which a safety helmet worn by a miner is equipped with a mobile tag, as provided in Example 3 of the present invention. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. In the present invention, the terms "first", "second", etc. (if any) in the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0055] Example 1

[0056] This embodiment provides a mine monitoring communication system, such as Figure 1 As shown, it includes: a radio frequency transceiver, a first node, a second node and a third node; the radio frequency transceiver is deployed in a vertical mine tunnel; the first node is deployed at a preset monitoring position in the mine; the second node is deployed on a wearable device; the third node is deployed at a transfer position between the radio frequency transceiver and the first node, and the third node is also deployed at a transfer position between the radio frequency transceiver and the second node; wherein, when the first node is used for uplink communication, it transmits its own collected working status and static physical quantities to the radio frequency transceiver via the third node, and when it is used for downlink communication, it receives communication status confirmation data transmitted by the radio frequency transceiver via the third node; when the second node is used for uplink communication, it transmits its own collected working status and static physical quantities to the radio frequency transceiver via the third node, and when it is used for downlink communication, it receives communication status confirmation data transmitted by the radio frequency transceiver via the third node.

[0057] like Figure 2As shown, the mine monitoring communication system operates as follows: the RF transceiver initiates a communication request to the first or second node. If the first or second node is currently dormant and has no transmission requirements, it returns a communication rejection message, and the RF transceiver waits for a period of time before resending the communication request. If the first or second node is currently active, it returns a communication request message, requesting the RF transceiver to reserve communication resources. Subsequently, the first or second node begins transmitting monitoring data. After receiving the data, the RF transceiver verifies the communication for errors based on the frame check. If an error occurs, it returns negative feedback message requesting the first or second node to retransmit. If no error occurs, it returns positive feedback message requesting the first or second node to continue transmitting monitoring data. Simultaneously, the RF transceiver extends the reserved time for communication resources based on the frame control field until the reserved time expires, at which point the communication channel is closed.

[0058] In uplink communication, the first and second nodes act as senders, and the RF transceiver acts as the receiver. In this method, the first node reports its operating status and static physical quantities via a first data stream to the RF transceiver; the second node reports its operating status and dynamic physical quantities via a second data stream to the RF transceiver.

[0059] Furthermore, the first node is used to transmit its own collected working status and static physical quantities to the radio frequency transceiver in the form of a first data stream during uplink communication; the second node is used to transmit its own collected working status and static physical quantities to the radio frequency transceiver in the form of a second data stream during uplink communication; the first data stream form and the second data stream form both include: communication rejection data, communication request data and monitoring data.

[0060] Among them, the communication rejection data indicates that the current node is in a dormant state and has no communication needs; the communication request data indicates that the current node is in a working state and requests the RF transceiver to reserve communication resources; the monitoring data in the form of the first data stream is the static physical quantity monitored by the first node; the monitoring data in the form of the second data stream is the dynamic physical quantity monitored by the second node.

[0061] The first data stream and the second data stream in the uplink communication method include three types of data to reflect three working states of the first node and the second node, specifically including: communication rejection data, communication request data, and monitoring data.

[0062] Downlink communication is sent by the RF transceiver and received by the first or second node. The RF transceiver sends communication status confirmation data to the first or second node via a third data stream, which also provides RF energy to the first and second nodes.

[0063] In relay communication, a third node acts as the sender, and the RF transceiver, the first node, or the second node acts as the receiver. The third node's function is to forward the first and second data streams to the RF transceiver upon receiving them. Upon receiving the third data stream, the third node forwards the data to the first or second node, thereby achieving data relay transmission.

[0064] Further, if Figure 3 As shown, the packaged data frames corresponding to the first data stream form and the second data stream form both include: a pilot signal, a frame control field, a sub-control field, an information frame, and a check frame; the pilot signal serves as the terminal's identity number, and its basic naming format is determined by the terminal's location. Terminal number 0 is closest to the base station, and the pilot signal serves as an important basis for the decoding process. The frame control field reflects the terminal's status and defines the expected transmission time of the data frame, the terminal's sleep state, and the recovery of the working state. The sub-control field contains identification information that is used to inform the data type represented by the subsequent information frame. The information frame contains specific data collected by the sensor and is the main content of the data frame. The check frame can be formed using a cyclic redundancy check method.

[0065] Furthermore, the packaged data frame corresponding to the third data stream format includes:

[0066] A pilot signal including a third identity number and a third training signal, wherein the third identity number of the radio frequency transceiver is determined by its location, and the third training signal is used to detect a channel state;

[0067] Frame control field, including communication request data;

[0068] Information frame, including positive feedback data or negative feedback data;

[0069] Check frame.

[0070] Furthermore, the optimization problem corresponding to the deployment position of the third node is solved with the communication connection between the RF transceiver and the third node and the communication connection between the third nodes as constraints, and the communication coverage range as the optimization goal to obtain the deployment position of the third node.

[0071] Specifically, a genetic algorithm can be used, and the steps include:

[0072] S1, defines the individual as the reflection coefficient and tilt direction of a third node, and the initial population consists of multiple individuals;

[0073] S2, calculates the fitness value of individuals in the population and selects individuals with high fitness for reproduction based on the roulette wheel selection method;

[0074] S3, perform crossover and mutation operations on the selected individuals;

[0075] S4, repeat S1-S3 until the preset termination condition is reached; through multiple iterations, continuously optimize the individuals to obtain the optimal deployment plan for the third node.

[0076] Furthermore, the first node and the second node each include a plurality of radio frequency switches tuned to different frequency bands, and integrate an energy harvesting circuit and a programmable data processing module.

[0077] Furthermore, the third node integrates a passive reflective array and a programmable data processing module.

[0078] A mine monitoring communication method comprises: utilizing the mine monitoring communication system to perform uplink communication and downlink communication.

[0079] Example 2

[0080] This embodiment provides a mine monitoring communication method, including: utilizing the above-mentioned mine monitoring communication system to perform uplink communication and downlink communication.

[0081] Specifically, the radio frequency transmitter starts a communication sequence and sends a transmission request to the first node and the second node, which corresponds to the communication status confirmation data in the downlink communication and is used to activate the node and prepare to read the sensor data.

[0082] After receiving the transmission request from the RF transmitter, the first and second nodes respond based on their current operating states. If a node is in a dormant state or its data has not been updated, it rejects the RF transmitter's communication request by sending a specific frame control field. This corresponds to the communication rejection data in uplink communication. At this point, the RF transmitter implements a delay strategy and resends the transmission request to ensure periodic data updates. On the other hand, when the first and second nodes have data to transmit, they adjust the frame control field and initiate a communication resource reservation request to the RF transceiver. This request includes resources such as channels and antennas, providing the necessary conditions for efficient data transmission. This corresponds to the communication request data in uplink communication.

[0083] Subsequently, the first and second nodes begin sending data packets sequentially based on their internal clock synchronization signals. Each data packet strictly adheres to the predetermined data frame structure, including a pilot signal, a frame control field, a sub-control field, an information frame, and a check frame, ensuring data integrity and verifiability. Upon receiving the first and second data streams, the third node forwards these data streams to the RF transceiver. Upon receiving the third data stream, the third node forwards these data streams to either the first or second node.

[0084] Furthermore, after receiving each data packet, the RF transceiver performs a cyclic redundancy check (CRC) to verify the data's accuracy. If the CRC indicates an error, the RF transceiver sends a negative feedback signal, instructing the first and second nodes to retransmit the erroneous data packet. If the data packet passes the CRC, the RF transceiver responds with a positive feedback signal, allowing the first and second nodes to continue sending subsequent data packets.

[0085] Once data transmission is complete, the first and second nodes close the communication channel, ending the current transmission cycle. After confirming that all data packets have been correctly received and processed, the RF transceiver also closes the communication channel, completing the data exchange process. The RF receiver extracts the gas concentration data through a demodulation circuit and transmits it to the central processing unit.

[0086] Furthermore, after the RF transceiver receives these modulated signals, the built-in data processing unit demodulates them and extracts the monitoring data. In the mine gas monitoring and early warning system, the analysis process of the received data is the key to identifying excessive gas concentrations and triggering emergency responses. The system first receives and decodes the data frames from the first node and the second node, extracting the gas concentration information and the terminal identity code (ID). Subsequently, the system automatically compares the extracted concentration value with the preset safety threshold. If the concentration of a gas such as carbon monoxide exceeds the threshold, the event is marked as excessive and an emergency analysis process is triggered. Using the terminal ID in the data frame and combining it with the positioning data, the system can accurately determine the location of the excessive event. Through the gas diffusion model, the area that may be affected by the excessive gas is evaluated, and then the radius range of the miners who need to receive evacuation instructions is determined.

[0087] Furthermore, the first node and the second node are both used to receive communication status confirmation data transmitted by the RF transceiver in the form of a third data stream during downlink communication; communication request data: the RF transceiver initiates a communication request to the first node or the second node, confirms an idle frequency band based on the current channel conditions, and ensures that the first node or the second node can access the idle frequency band for communication. Positive feedback data: after receiving the first data stream or the second data stream, the RF transceiver verifies the accuracy of the transmitted data through a cyclic redundancy check. If the data is correct, the RF transceiver will return positive feedback data to the first node or the second node, and extend the channel retention time based on the expected transmission time in the frame control field. Negative feedback data: if the RF transceiver finds that there is an error in the transmitted data through the CRC check frame, it will return negative feedback data to the first node or the second node to request retransmission.

[0088] Example 3

[0089] This embodiment provides a disaster warning system, including a radio frequency transceiver and first, second and third nodes. Figure 4, also includes RF transmitter, passive tag module, RF receiver and visualization platform.

[0090] The RF transmitter transmits RF signals to activate the first and second nodes and transmit control commands. The RF transmitter uses a signal generation mechanism that combines software and hardware, making it compatible with different types of environmental equipment.

[0091] The passive tag module is a key component of the present invention. The module can communicate with the radio frequency transmitter and the radio frequency receiver under passive conditions by utilizing the radio frequency energy collected in space.

[0092] Specifically, gas sensors include: carbon monoxide, oxygen, methane, and carbon dioxide sensors, which are used to monitor the gas concentration in the mine in real time.

[0093] like Figure 5 As shown in the figure, the safety helmets worn by miners are equipped with mobile tags, which are configured as the second node as follows:

[0094] The camera module is mounted directly in front of the helmet, above the brim. The antenna for the energy harvesting circuit is mounted on the outside of the helmet to provide power to the other electronic devices on the helmet. A heart rate sensor is built into the top of the helmet to monitor the miner's vital signs in real time. The microphone module is located on the side of the helmet to send a distress signal in an emergency. The speaker module is located to the side of the microphone module to guide miners to evacuate to a safe area in the event of a mining accident.

[0095] Passive backscatter tags are also installed inside hard hats to enhance safety monitoring for miners. These mobile tags monitor gas concentrations and provide positioning capabilities, transmitting data to a radio frequency receiver via backscatter communication technology. Furthermore, hard hats are equipped with voice modules, allowing workers to send distress calls and receive escape instructions.

[0096] The third node is used to enhance communication coverage in horizontal and inclined lanes. It contains an array of reflective elements that adjust the propagation direction of data streams based on the lane's location and reflect the data stream back to the RF transceiver. The third node is deployed based on an optimization algorithm, with the communication connection between the RF transceiver and the third node as the constraint and the communication coverage as the optimization objective.

[0097] The mine monitoring and early warning system generates and receives RF signals through RF transceivers, communicating with a first node deployed at a key location in the mine and a second node that moves with the miners, respectively monitoring static and dynamic physical quantities within the mine. The first and second nodes are equipped with energy harvesters that capture energy and data from RF signals. The first node collects physical data about the mine environment, while the second node, mounted on a wearable device, monitors the miners' dynamic changes in real time. The third node is responsible for enhancing communication coverage, adjusting the signal propagation direction through its array of reflective elements to ensure effective signal propagation within the tunnel. The system uses a cyclic redundancy check to ensure accurate data transmission, and intelligently manages communication resources through a dynamic response mechanism and optimization algorithm to achieve comprehensive monitoring of the mine environment and ensure the safety of miners.

[0098] It will be easily understood by those skilled in the art that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mine monitoring communication system, characterized in that: include: Radio frequency transceivers are deployed in vertical mine tunnels; The first node is deployed at a preset monitoring location in the mine; The second node is deployed on the wearable device; a third node, deployed at a transfer position between the radio frequency transceiver and the first node, and further deployed at a transfer position between the radio frequency transceiver and the second node; in, The first node transmits the working status and static physical quantity collected by itself to the radio frequency transceiver via the third node during uplink communication, and receives communication status confirmation data transmitted by the radio frequency transceiver via the third node during downlink communication; The second node transmits the working status and static physical quantity collected by itself to the radio frequency transceiver via the third node during uplink communication, and receives communication status confirmation data transmitted by the radio frequency transceiver via the third node during downlink communication; The first node is used to transmit the working status and static physical quantities collected by itself to the radio frequency transceiver in the form of a first data stream during uplink communication; The second node is used to transmit the working status and static physical quantities collected by itself to the radio frequency transceiver in the form of a second data stream during uplink communication; Both the first data stream form and the second data stream form include: communication rejection data, communication request data and monitoring data; the communication rejection data indicates that the current node is in a dormant state and has no communication requirements; the communication request data indicates that the current node is in a working state and requests the RF transceiver to reserve communication resources; the monitoring data in the first data stream form is the static physical quantity monitored by the first node; the monitoring data in the second data stream form is the dynamic physical quantity monitored by the second node.

2. The mine monitoring communication system according to claim 1, characterized in that: The packaged data frame corresponding to the first data stream format includes: The pilot signal includes: a first identity number determined by the order in which the first nodes join the system and a first training signal for detecting a channel state; A frame control field including communication rejection data or communication request data; The sub-control field contains an identifier indicating the data type of the information frame that follows it; Information frames, including monitoring data; Check frame.

3. The mine monitoring communication system according to claim 1, wherein: The packaged data frame corresponding to the second data stream format includes: The pilot signal includes: a second identity number representing the identity information of the wearer corresponding to the wearable device and a second training signal for detecting a channel state; A frame control field including communication rejection data or communication request data; The sub-control field contains an identifier indicating the data type of the information frame that follows it; Information frames, including monitoring data; Check frame.

4. The mine monitoring communication system according to claim 1, wherein: The first node and the second node are both used to receive communication status confirmation data transmitted by the radio frequency transceiver in the form of a third data stream during downlink communication; The third data stream form includes communication request data, positive feedback data and negative feedback data; The communication request data is used to indicate that the radio frequency transceiver requests communication from the first node or the second node, and confirms an idle frequency band according to the current channel status to ensure that the corresponding node can join the idle frequency band.

5. The mine monitoring communication system according to claim 4, characterized in that: The packaged data frames corresponding to the third data stream form include: A pilot signal including a third identity number and a third training signal, wherein the third identity number and the identity number of the radio frequency transceiver are determined by the location of the radio frequency transceiver, and the third training signal is used to detect a channel state; Frame control field, including communication request data; Information frame, including positive feedback data or negative feedback data; Check frame.

6. The mine monitoring communication system according to claim 1, wherein: The optimization problem corresponding to the deployment position of the third node is solved with the communication connection between the RF transceiver and the third node and the communication connection between the third nodes as constraints, and the communication coverage range as the optimization goal to obtain the deployment position of the third node.

7. The mine monitoring communication system according to any one of claims 1 to 6, characterized in that: The first node and the second node both include a plurality of radio frequency switches tuned to different frequency bands, and integrate an energy harvesting circuit and a programmable data processing module.

8. The mine monitoring communication system according to any one of claims 1 to 6, characterized in that: The third node integrates a passive reflective array and a programmable data processing module.

9. A mine monitoring communication method, characterized in that: include: The mine monitoring communication system according to any one of claims 1 to 8 is used for uplink communication and downlink communication.

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