Mine monitoring communication system and method

Abstract

The invention discloses a mine monitoring communication system and method, and belongs to the technical field of wireless communication, 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 arranged in a vertical mine tunnel; the first node is deployed at a preset monitoring position in a mine; the second node is deployed in the wearable device; the third node is deployed at a transfer position between the radio frequency transceiver and the first node and a transfer position between the radio frequency transceiver and the second node; according to the invention, the first node and the second node are used for monitoring static and dynamic physical quantities respectively, and the third node is used for transferring to ensure comprehensive monitoring in a complex mine environment; in the uplink communication and downlink communication process, data transmission and state confirmation between nodes are realized, the reliability and coverage range of communication are enhanced, the accuracy and reliability of data are ensured, and the overall stability is improved; the problems of limited signal transmission distance and serious signal attenuation in a mine environment are solved.

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 scale continues to expand and mining depth increases, the mine environment has become more complex and dangerous, and miners are facing many threats to their personal safety. Traditional mine monitoring methods mainly rely on wired communication networks or manual patrols, but these methods have many problems due to the geographical limitations of mines. For example, wired network deployment is complex and costly, and changes in mine structure can easily lead to line damage, affecting communication stability. At the same time, manual patrols are inefficient, data is inaccurate, and there is no real-time feedback, which makes it difficult to meet the needs of modern mine management.

[0003] In order to improve the real-time and reliability of mine monitoring, mine monitoring systems based on wireless communication technology have been widely studied and applied in recent years. However, the existing wireless communication systems face technical difficulties such as severe signal attenuation and limited communication distance in mines, resulting in unsatisfactory application effects in complex mine environments. Especially in closed and multi-obstacle environments such as mines, signal propagation is severely affected by geological structures, communication quality is unstable, and it is difficult to form 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 urgently solved in the current field of mine safety management. Summary of the invention

[0005] In view of the above 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 object, 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 the third node is also 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 when used for uplink communication, and receives the communication status confirmation data transmitted by the radio frequency transceiver via the third node when used for downlink communication;

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

[0014] In one embodiment, the first node is used to transmit the working state and static physical quantity 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 state and static physical quantity collected by itself 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 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;

[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 packetized data frame corresponding to the third data stream form includes:

[0031] A pilot signal, comprising 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 thereof, and the third training signal is used to detect a channel state;

[0032] A frame control field, including communication request data;

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

[0034] Check frame.

[0035] In one of the embodiments, the optimization problem corresponding to the deployment position of the third node is solved to obtain the deployment position of the third node, 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.

[0036] In one of the embodiments, 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 of the embodiments, 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, including: 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 scheme uses 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 achieved 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; solving the problems of limited signal transmission distance and severe signal attenuation in a mine environment.

[0041] (2) In this scheme, the first node is used to transmit the working status and static physical quantities collected by itself to the RF 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 RF 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; such a design has the advantage of having an accurate identity recognition function, being able to effectively monitor the channel status, ensure signal synchronization, optimize spectrum resource allocation, improve the system's anti-interference capability, 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 wearer's identity information corresponding to the wearable device and a second training signal for detecting the channel state; such a design has the advantage of strengthening personalized monitoring and real-time location tracking capabilities and improving the response efficiency in emergency events. Through real-time feedback of the channel state, the system can dynamically adjust the transmission strategy, optimize the 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 the idle frequency band according to the current channel status 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 conflict, and achieve stable communication transmission. At the same time, the system can flexibly switch communication nodes, balance the load, avoid communication interruption 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 scheme 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 state; such a design has the advantage that this design can achieve precise positioning of the RF transceiver, 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 scheme 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 that the communication coverage range is maximized, 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 integrate 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 the dependence on external power supply, which is particularly suitable for the environment of difficult energy supply in mines; the programmable data processing module enhances the data processing capability of the node, helps to 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 scheme 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 preprocessing data, and increases the flexibility and intelligence of the system. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0050] Figure 2 Schematic diagram of the working process of the mine monitoring communication system provided by Embodiment 1 of the present invention;

[0051] Figure 3 is a schematic diagram of the first and second data frame formats provided by Embodiment 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 in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain 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. 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 cave; 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 the first node transmits its own collected working status and static physical quantity to the radio frequency transceiver via the third node when used for uplink communication, and receives communication status confirmation data transmitted by the radio frequency transceiver via the third node when used for downlink communication; the second node transmits its own collected working status and static physical quantity to the radio frequency transceiver via the third node when used for uplink communication, and receives communication status confirmation data transmitted by the radio frequency transceiver via the third node when used for downlink communication.

[0057] like Figure 2As shown, the working process of the mine monitoring communication system is as follows: the RF transceiver initiates a communication request to the first node or the second node. If the first node or the second node is in a dormant state before and has no transmission demand, the communication rejection data is returned, and the RF transceiver resends the communication request after waiting for a period of time; if the first node or the second node is currently in a working state, the communication request data is returned to request the RF transceiver to reserve communication resources. Subsequently, the first node or the second node starts to transmit monitoring data. After receiving the data, the RF transceiver verifies whether an error occurs in the communication according to the inspection frame. If there is an error, negative feedback data is returned to request the first node or the second node to retransmit; if there is no error, positive feedback data is returned, and the first node or the second node continues to transmit monitoring data. At the same time, the RF transceiver extends the reserved time of the communication resources according to the frame control field until the reserved time ends, and then closes the communication channel.

[0058] In the uplink communication, the first node and the second node are used as senders, and the radio frequency transceiver is used as the receiver. In this method, the first node is responsible for reporting its working state and static physical quantity, which are sent to the radio frequency transceiver through the first data stream; the second node reports its working state and dynamic physical quantity, which are sent to the radio frequency transceiver through the second data stream.

[0059] Furthermore, the first node is used to transmit its own collected working status and static physical quantities to the RF 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 RF 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 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.

[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 the first node or the second node is received by the RF transceiver. The RF transceiver sends communication status confirmation data to the first node or the second node through the third data stream, and the data stream is also responsible for providing RF energy to the first node and the second node.

[0063] The relay communication is carried out by the third node as the sender, and the RF transceiver or the first node or the second node as the receiver. The function of the third node is to forward the first data stream and the second data stream to the RF transceiver when it receives the first data stream and the second data stream; and to forward the data to the first node or the second node when it receives the third data stream, thereby realizing the relay transmission of data.

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

[0065] Furthermore, the packaged data frame corresponding to the third data stream form 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] A frame control field, including communication request data;

[0068] An 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 to obtain the deployment position of the third node, 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.

[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 values ​​of individuals in the population, and selects individuals with high fitness for reproduction based on the roulette wheel selection method;

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

[0075] S4, repeat S1-S3 until the preset termination condition is reached; through multiple iterations, the individuals are continuously optimized 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 collection 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: using the above-mentioned mine monitoring communication system to perform uplink communication and downlink communication.

[0081] Specifically, the radio frequency transmitter starts the 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] Then, after receiving the transmission request from the RF transmitter, the first node and the second node respond according to their current working status. If the node is in a dormant state or the data is not updated, the communication request of the RF transmitter is rejected by sending a specific frame control field, which corresponds to the communication rejection data in the uplink communication. At this time, the RF transmitter will execute the delay strategy and then resend the transmission request to ensure the periodic update of the data. On the other hand, when the first node and the second node have data to be transmitted, it adjusts the frame control field and initiates a communication resource reservation request to the RF transceiver. This request includes resources such as channels and antennas, which provide necessary conditions for the effective transmission of data, which corresponds to the communication request data in the uplink communication.

[0083] Subsequently, the first node and the second node start to send data packets in sequence according to the internal clock synchronization signal. Each data packet strictly follows the predetermined data frame structure, including the pilot signal, the frame control field, the sub-control field, the information frame and the check frame, to ensure the integrity and verifiability of the data. When the third node receives the first data stream and the second data stream, it forwards these data to the radio frequency transceiver. When the third node receives the third data stream, it forwards these data to the first node or the second node.

[0084] Furthermore, after receiving each data packet, the RF transceiver performs a cyclic redundancy check to verify the accuracy of the data. If the check result indicates that the data is erroneous, the RF transceiver will send a negative feedback data signal to instruct the first node and the second node to retransmit the erroneous data packet. If the data packet passes the check, the RF transceiver responds with a positive feedback data signal to allow the first node and the second node to continue to send subsequent data packets.

[0085] Then, after the data transmission is completed, the first node and the second node will close the communication channel and end the current transmission cycle. After confirming that all data packets have been correctly received and processed, the RF transceiver will also close the communication channel to complete the entire data exchange process. The RF receiver extracts the gas concentration data through the demodulation circuit and transmits the data 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 gases such as carbon monoxide exceeds the threshold, the event is marked as exceeding the standard and triggers the emergency analysis process. Using the terminal ID in the data frame and combining the positioning data, the system can accurately determine the location of the exceeding 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 the evacuation order is determined.

[0087] Furthermore, 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; Communication request data: the radio frequency transceiver initiates a communication request to the first node or the second node, confirms the idle frequency band according to the current channel status, 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 radio frequency transceiver verifies the accuracy of the transmitted data through a cyclic redundancy check. If the data is correct, the radio frequency transceiver will return positive feedback data to the first node or the second node, and extend the channel retention time according to the expected transmission time in the frame control field. Negative feedback data: if the radio frequency 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 is used to transmit RF signals to stimulate the first node and the second node to work and transmit control commands. The RF transmitter adopts a signal generation mechanism that combines software and hardware, and is compatible with different types of environmental equipment.

[0091] The passive tag module is a key component of the present invention, and the module can utilize the radio frequency energy collected in space to achieve communication with the radio frequency transmitter and the radio frequency receiver under passive conditions.

[0092] Specifically, the 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 installed in front of the helmet, above the brim. The antenna of the energy harvesting circuit is installed on the outside of the helmet, and its function is to provide energy for other electronic devices on the helmet. The heart rate sensor is built into the top of the helmet to monitor the miners' vital signs in real time. The microphone module is placed on the side of the helmet, and its function is to send a distress signal in an emergency. The speaker module is located on the side of the microphone module, and is used to guide miners to evacuate to a safe area when a mining accident occurs.

[0095] In addition, passive backscatter tags are installed inside the helmets to enhance the safety monitoring of miners. These mobile tags can monitor gas concentrations and have positioning functions, transmitting data to radio frequency receivers through backscatter communication technology; in addition, the helmets are equipped with voice modules to facilitate workers to send out distress messages and receive escape instructions.

[0096] The third node is used to enhance the communication coverage of horizontal and inclined lanes. It contains a reflection unit array that can adjust the propagation direction of the data stream according to the location of the lane 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 condition and the communication coverage as the optimization goal.

[0097] The mine monitoring and early warning system generates and receives radio frequency signals through radio frequency transceivers, communicates with the first node deployed at key locations in the mine and the second node that moves with the miners, and monitors the static and dynamic physical quantities in the mine respectively. The first node and the second node are equipped with energy harvesters, which obtain energy and collect data through radio frequency signals. The first node collects physical quantity data of the mine environment, and the second node is carried on a wearable device to monitor the dynamic changes of miners in real time. The third node is responsible for enhancing communication coverage, adjusting the direction of signal propagation through its reflection unit array to ensure effective propagation of the signal in the tunnel. The system uses a cyclic redundancy check method to ensure the accuracy of data transmission, and intelligently manages communication resources through a dynamic response mechanism and optimization algorithm to achieve comprehensive monitoring of the mine environment and safety of miners.

[0098] It will be easily understood by those skilled in the art that the above description is only 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 protection scope 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 the third node is also 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 when used for uplink communication, and receives the communication status confirmation data transmitted by the radio frequency transceiver via the third node when used for downlink communication; The second node transmits its collected working status and static physical quantity to the RF transceiver via the third node when used for uplink communication, and receives communication status confirmation data transmitted by the RF transceiver via the third node when used for downlink communication.

2. The mine monitoring communication system according to claim 1, characterized in that: The first node is used to transmit the working status and static physical quantity 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 quantity collected by itself 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; 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.

3. The mine monitoring communication system according to claim 2, characterized in that: The packaged data frame corresponding to the first data stream form 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.

4. The mine monitoring communication system according to claim 2, characterized in that: The packaged data frame corresponding to the second data stream form 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.

5. The mine monitoring communication system according to claim 1, characterized in that: 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.

6. The mine monitoring communication system according to claim 5, characterized in that: The packaged data frame corresponding to the third data stream form includes: A pilot signal, comprising 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 thereof, and the third training signal is used to detect a channel state; A frame control field, including communication request data; An information frame, including positive feedback data or negative feedback data; Check frame.

7. The mine monitoring communication system according to claim 1, characterized in that: The optimization problem corresponding to the deployment position of the third node 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 target to obtain the deployment position of the third node.

8. The mine monitoring communication system according to any one of claims 1 to 7, 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 energy collection circuits and programmable data processing modules.

9. The mine monitoring communication system according to any one of claims 1 to 7, characterized in that: The third node integrates a passive reflective array and a programmable data processing module.

10. A mine monitoring communication method, characterized in that: include: The mine monitoring communication system described in claims 1-9 is used for uplink communication and downlink communication.

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