Remote communication data transmission system adaptive to downhole operation

Abstract

The invention relates to the technical field of communication data transmission, and particularly discloses a remote communication data transmission system adaptive to underground operation, which comprises an underground data acquisition and sending end, a data transmission node unit, a transmission node state analysis unit, a transmission node cooperation strategy unit and a ground data center server. The transmission node state analysis unit is utilized in advance to perform optimal node selection on the operation nodes in the data transmission node unit, and reasonable distribution of data traffic is performed on the selected optimal nodes, so that the condition of performance reduction or data loss caused by overload of some nodes is avoided, meanwhile, residual resources of other nodes are fully utilized, and the efficiency of data transmission is improved. And finally, an optimal communication data transmission scheme is generated in cooperation with a transmission node cooperation strategy unit, so that signals can be kept stable under the complex underground roadway structure and geological conditions, loss of data in the transmission process can be effectively reduced, and it is ensured that important data can be transmitted preferentially and rapidly.

Description

Technical Field

[0001] The present invention relates to the technical field of communication and data transmission, and in particular to a remote communication and data transmission system suitable for underground operations. Background Art

[0002] In underground operation environments, traditional communication and data transmission systems face many challenges. Due to the complex structure of underground tunnels and changeable geological conditions, signal transmission is easily interfered with, resulting in unstable signals and frequent data loss. At the same time, the existing system lacks effective analysis and management of data transmission nodes, and is unable to reasonably allocate data traffic according to the actual status of the nodes. Some nodes are often overloaded and performance degraded, while other node resources are idle. This not only affects the efficiency and reliability of data transmission, but also causes a waste of bandwidth resources, and cannot meet the needs of underground operations for real-time, accurate, and efficient communication.

[0003] At present, some underground communication systems try to improve signal transmission problems through simple signal enhancement technology or increasing the number of transmission nodes, but these methods are often only temporary solutions and not fundamental solutions. Signal enhancement technology may increase energy consumption and cost, and its effect is limited in complex environments. Simply increasing the number of nodes without reasonable node management and collaboration strategies will increase the complexity and difficulty of management of the system, and will not fundamentally solve the problems of uneven node resource utilization and poor data transmission quality. In addition, the evaluation of node status is relatively rough, lacking comprehensive and detailed parameter analysis and quantitative indicators, making it difficult to accurately identify the quality of node status, and thus unable to formulate efficient transmission node collaboration strategies. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a remote communication data transmission system suitable for underground operations, in order to solve the above-mentioned technical defects.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: a remote communication data transmission system adapted for underground operations, the remote communication data transmission system comprising: an underground data acquisition and sending end, a data transmission node unit, a transmission node status analysis unit, a transmission node cooperation strategy unit and an uphole data center server; the downhole data acquisition and sending end collects various communication data of underground operations and divides them into several copy files and sends them to the data transmission node unit for transfer; before the collected communication data is sent to the uphole data center server through the data transmission node unit, the transmission node status analysis unit is used to select the optimal node for the operation node in the data transmission node unit in advance, and the data flow of the selected optimal node is reasonably allocated; The downhole data acquisition transmitter is used to collect and acquire the working voltage, current, temperature parameters of various acquisition sensors and the status data of personnel in downhole operations in real time, and divide the data into multiple data packets and send them to the data transmission node unit, and record the signal transmission strength value and the total number of data packets sent by the downhole data acquisition transmitter in each transmission period in each transmission cycle; The data transmission node unit includes a plurality of node modules arranged in a distributed manner and a plurality of corresponding wireless communication transmission modules; The transmission node state analysis unit performs comprehensive calculation and analysis on the communication data transmission parameters of each node module in the distributed setting corresponding to each transmission time period in each transmission cycle, and obtains the node transmission state coefficient of each node module corresponding to each transmission time period in each transmission cycle. ; The transmission node cooperation strategy unit analyzes the node transmission status of each node module corresponding to each transmission cycle to generate the optimal transmission node cooperation strategy.

[0006] Furthermore, each node module of the distributed arrangement is connected to the downhole data acquisition and transmission end through an optical fiber network for communication, and at the same time, several node modules of the distributed arrangement are connected to the uphole data center server through several corresponding wireless communication transmission modules.

[0007] Furthermore, the communication data transmission parameters include signal strength parameters, transmission rate parameters, packet loss rate and average delay.

[0008] Furthermore, the specific calculation and analysis method for the communication data transmission parameters of each node module in the distributed setting corresponding to each transmission time period in each transmission cycle is as follows: The signal receiving strength and signal transmission rate of each node module in each transmission period in each transmission cycle are obtained, and normalized to obtain the average signal strength and average transmission rate of each node module in each transmission period after normalization, which are recorded as and ; At the same time, the signal strength stability value of each node module in each transmission cycle is calculated by the standard deviation of the signal reception strength of each node module in each transmission period and the maximum signal reception strength of each node module in each transmission period. ; The transmission rate difference value of each node module in each transmission cycle is calculated by dividing the standard deviation of the transmission rate of each node module in each transmission cycle by the average transmission rate, and then the transmission rate difference value of each node module in each transmission cycle is calculated by combining the maximum transmission rate difference. ; The packet loss rate of each node module in each transmission period is calculated by the total number of received data packets in each transmission period of each node module, the total number of sent data packets recorded by the downhole data acquisition transmitter, and the set maximum packet loss rate, which is recorded as ; The average delay of each node module in each transmission cycle is calculated by calculating the time point of sending data packets and receiving data packets in each transmission period of each node module, which is recorded as ; By comprehensively calculating and analyzing the above signal strength parameters, transmission rate parameters, packet loss rate and average delay, and setting corresponding weight factors based on the influence of each parameter on the transmission state, the node transmission state coefficient of each node module corresponding to each transmission cycle is obtained. .

[0009] Furthermore, each node module corresponds to a node transmission state coefficient in each transmission cycle. , the specific calculation and analysis method is as follows: According to the formula Calculate the node transmission state coefficient of each node module corresponding to each transmission cycle , w1, w2, w3 and w4 all represent weight factors set for corresponding parameters.

[0010] Furthermore, the node transmission status of each node module in each transmission cycle is analyzed, and the specific analysis method is as follows: By collecting the node transmission state coefficients under different mining operation periods, different equipment operating conditions and different geological conditions, and calculating the average value, we take the value that is 10% higher as the good threshold of the node transmission state coefficient, and take the value that is 5% lower as the bad threshold of the node transmission state coefficient; The node transmission state coefficient of each node module corresponding to each transmission cycle is greater than the node transmission state coefficient excellent threshold value and is marked as a high-speed transmission node. The remaining bandwidth and processing capacity of each high-speed transmission node are obtained and recorded as ; Firstly, r high-speed transmission nodes are selected from q high-speed transmission nodes as selected transmission nodes for data transmission; By calculating the channel gains between each selected transmission node and the downhole data acquisition transmitter and the uphole data center server, they are respectively denoted as , and also calculate the channel gain between each high-speed transmission node except the selected transmission node and the downhole data acquisition transmitter and the uphole data center server. According to the formula Calculate the combined gain of each currently selected transmission node Then, the channel gains between each high-speed transmission node and the downhole data acquisition transmitter and the uphole data center server are replaced with each selected transmission node one by one, and the combined gain of each new selected transmission node after replacement is calculated. Calculate if , then each selected transmission node after replacement is selected as a new transmission node cooperation strategy; According to the formula Calculate the new data flow score of each high-speed transmission node, They are respectively represented as the remaining bandwidth and processing capacity of each selected transmission node, They represent the weight factors corresponding to the remaining bandwidth and processing capacity of each high-speed transmission node. They represent the weight factors corresponding to the remaining bandwidth and processing capacity of each selected transmission node, Represented as the total data traffic to be allocated.

[0011] Beneficial effects of the present invention: 1. After the underground data collection and sending end collects various communication data of underground operations, it is divided into several copy files and sent to the data transmission node unit for transfer. Before the collected communication data is sent to the uphole data center server through the data transmission node unit, the transmission node status analysis unit is used to select the optimal node for the operation node in the data transmission node unit in advance, and the data flow of the selected optimal node is reasonably allocated to avoid the performance degradation or data loss of some nodes due to overload, and at the same time, the remaining resources of other nodes are fully utilized. Finally, the transmission node cooperation strategy unit is used to generate the optimal communication data transmission plan, which can not only make the signal stable under the complex tunnel structure and geological conditions underground, but also effectively reduce the loss of data during transmission, ensuring that important data can be transmitted first and quickly, and at the same time, the remaining bandwidth can be fully utilized to transmit other data, thereby improving the bandwidth utilization of the entire system.

[0012] 2. In the present invention, various data of underground operations are collected in real time through the underground data acquisition and sending end and divided into copies for sending, so as to ensure the comprehensiveness and reliability of data collection; the data transmission node unit adopts a distributed setting and a communication method combining optical fiber and wireless, which enhances the stability and flexibility of the system; the transmission node state analysis unit performs comprehensive calculation and analysis on the communication and data transmission parameters of each node module to obtain the node transmission state coefficient, which provides a basis for subsequent optimization, can keep the signal stable in the complex environment of the underground and reduce data loss; the transmission node cooperation strategy unit distinguishes the node state by setting a threshold, selects the high-speed transmission node and calculates the combined gain and the data flow score, and generates the optimal cooperation strategy, which can make full use of node resources, avoid overload, improve bandwidth utilization, and can also dynamically adjust the transmission node cooperation strategy according to actual conditions; the data center server on the well receives data in real time and issues abnormal warnings to ensure the safety and efficiency of underground operations. The overall solution effectively improves the reliability, stability and resource utilization efficiency of remote communication data transmission of underground operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a principle block diagram of a remote communication data transmission system adapted for underground operations according to an embodiment of the present invention; Figure 2 It is a principle block diagram of the data transmission node unit of the present invention. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present invention.

[0016] As shown in the present invention and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0017] Although the present invention has made various references to certain modules in the system according to an embodiment of the present invention, any number of different modules can be used and run on a user terminal and / or server. The modules are only illustrative, and different aspects of the system and method can use different modules.

[0018] The present invention uses a flow chart to illustrate the operations performed by the system according to an embodiment of the present invention. It should be understood that the preceding or following operations are not necessarily performed precisely in order. On the contrary, various steps may be processed in reverse order or simultaneously as required. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0019] Below, the exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described here.

[0020] Embodiment 1: See also Figure 1 As shown, a remote communication data transmission system adapted for underground operations includes: an underground data acquisition and transmission end, a data transmission node unit, a transmission node status analysis unit, a transmission node cooperation strategy unit and an uphole data center server; various communication data of underground operations are collected by the underground data acquisition and transmission end and then divided into several copy files and sent to the data transmission node unit for transfer; before the collected communication data is sent to the uphole data center server through the data transmission node unit, the transmission node status analysis unit is used to select the optimal node for the operation node in the data transmission node unit in advance, and the data flow of the selected optimal node is reasonably allocated to avoid the performance degradation or data loss of some nodes due to overload, and at the same time, the remaining resources of other nodes are fully utilized, and finally, the transmission node cooperation strategy unit is cooperated to generate the optimal communication data transmission plan, which can not only make the signal stable under the complex tunnel structure and geological conditions underground, but also effectively reduce the loss of data during transmission, ensure that important data can be transmitted preferentially and quickly, and at the same time, the remaining bandwidth can be fully utilized to transmit other data, thereby improving the bandwidth utilization of the entire system.

[0021] Specifically, the downhole data acquisition and transmission end is used to collect and acquire the working voltage, current, temperature parameters of various acquisition sensors of downhole operations and the status data of personnel in downhole operations in real time, and divide the data into multiple data packets and send them to the data transmission node unit, and at the same time record the signal transmission strength value and the total number of data packets sent by the downhole data acquisition and transmission end corresponding to each transmission time period in each transmission cycle; The data transmission node unit includes a plurality of node modules and a plurality of corresponding wireless communication transmission modules (such as Figure 2As shown), each node module of the distributed arrangement is connected to the downhole data acquisition sending end by using an optical fiber network for communication, and at the same time, several node modules of the distributed arrangement are connected to the uphole data center server through several correspondingly arranged wireless communication transmission modules; Furthermore, the transmission node state analysis unit performs a comprehensive calculation and analysis on the communication data transmission parameters of each node module in the distributed arrangement corresponding to each transmission time period in each transmission cycle, and obtains the node transmission state coefficient of each node module corresponding to each transmission time period in each transmission cycle. ; Among them, the communication data transmission parameters include signal strength parameters, transmission rate parameters, packet loss rate and average delay.

[0022] The specific calculation and analysis methods are as follows: The signal receiving strength of each node module in each transmission time period in each transmission cycle is obtained. The average signal strength of each node module in each transmission cycle is obtained by summing the signal receiving strength of each node module in each transmission time period in each transmission cycle and dividing it by m. The average signal strength of each node module in each transmission cycle is divided by the maximum signal receiving strength in each transmission time period in each transmission cycle of each node module. The normalized average signal strength of each node module in each transmission cycle is obtained, which is recorded as ; Wherein i=1,2,...,n, i represents the number of each distributed node module, n represents the total number of distributed node modules, j=1,2,...,m, j represents the number of each transmission time period, m represents the total number of each transmission time period.

[0023] The standard deviation of the signal receiving strength of each node module corresponding to each transmission cycle is calculated by the standard deviation calculation formula, which is recorded as , according to the formula Calculate the signal strength and stability value of each node module corresponding to each transmission cycle ;in, It is represented by the maximum signal receiving strength of each node module in each transmission time period within each transmission cycle.

[0024] The signal strength parameter is composed of the average signal strength and signal strength stability value of each node module in each transmission cycle after normalization.

[0025] Obtain the signal transmission rate and maximum signal transmission rate of each node module in each transmission period corresponding to each transmission cycle, calculate the average transmission rate and standard deviation of the transmission rate of each node module in each transmission cycle in the same way, divide the average transmission rate by the maximum signal transmission rate, and obtain the normalized average transmission rate of each node module in each transmission cycle, recorded as ; The transmission rate difference value of each node module in each transmission cycle is obtained by dividing the standard deviation of the transmission rate of each node module in each transmission cycle by the average transmission rate. Then, based on historical data and reference industry standards, the maximum transmission rate difference value of each node module in each transmission cycle is set. The transmission rate difference value is divided by the maximum transmission rate difference value to obtain the normalized transmission rate difference value of each node module in each transmission cycle, which is recorded as ; The transmission rate parameter is composed of the average transmission rate and the transmission rate difference value of each node module in each transmission cycle after normalization.

[0026] Obtain the total number of received data packets of each node module in each transmission period in each transmission cycle, subtract the total number of received data packets of each node module in each transmission period in each transmission cycle from the total number of sent data packets recorded by the downhole data acquisition transmitter, and divide the result by the set maximum packet loss rate to obtain the normalized packet loss rate of each node module in each transmission cycle, recorded as ; Get the time point of sending and receiving data packets of each node module corresponding to each transmission period in each transmission cycle, take the absolute value of the difference between the two time points as the delay value, sum the delay values ​​of each data transmission in each transmission cycle and divide them by m to get the average delay, then divide the average delay by the set maximum delay to get the normalized average delay of each node module corresponding to each transmission cycle, recorded as ; By comprehensively calculating and analyzing the above signal strength parameters, transmission rate parameters, packet loss rate and average delay, and setting corresponding weight factors based on the influence of each parameter on the transmission state, the node transmission state coefficient of each node module corresponding to each transmission cycle is obtained. , the specific calculation and analysis method is as follows: According to the formula Calculate the node transmission state coefficient of each node module corresponding to each transmission cycle , w1, w2, w3 and w4 all represent weight factors set for corresponding parameters.

[0027] Furthermore, the transmission node cooperation strategy unit analyzes the node transmission status of each node module in each transmission cycle to generate the optimal transmission node cooperation strategy. The specific analysis method is as follows: By collecting the node transmission state coefficients under different mining operation periods, different equipment operating conditions and different geological conditions, and calculating the average value, we take the value that is 10% higher as the good threshold of the node transmission state coefficient, and take the value that is 5% lower as the bad threshold of the node transmission state coefficient; The node transmission state coefficient of each node module corresponding to each transmission cycle A comparison analysis is performed with the good threshold value of the node transmission state coefficient and the poor threshold value of the node transmission state coefficient, and the node transmission state coefficient of each node module corresponding to each transmission cycle is greater than the good threshold value of the node transmission state coefficient, and is marked as a high-speed transmission node; the node transmission state coefficient of each node module corresponding to each transmission cycle is less than the poor threshold value of the node transmission state coefficient, and is marked as a delayed transmission node; the node transmission state coefficient of each node module corresponding to each transmission cycle is between the good threshold value of the node transmission state coefficient and the poor threshold value of the node transmission state coefficient, and is marked as a pending transmission node; Get the remaining bandwidth and processing capacity of each high-speed transmission node, which are recorded as , where the remaining bandwidth The processing capacity is obtained by subtracting the used bandwidth from the total bandwidth of each high-speed transmission node. It is represented by the number of data packets that each high-speed transmission node can process per second, g=1,2,…,q, g is represented by the number of each high-speed transmission node, q is represented by the total number of the high-speed transmission node numbers; First, r high-speed transmission nodes are selected from q high-speed transmission nodes as selected transmission nodes for data transmission, where r=1, 2, ..., f, r represents the number of each selected transmission node, f represents the total number of the selected transmission node numbers, and f≤q; By calculating the channel gains between each selected transmission node and the downhole data acquisition transmitter and the uphole data center server, they are respectively denoted as , and also calculate the channel gain between each high-speed transmission node except the selected transmission node and the downhole data acquisition transmitter and the uphole data center server. According to the formula Calculate the combined gain of each currently selected transmission node Then, the channel gains between each high-speed transmission node and the downhole data acquisition transmitter and the uphole data center server are replaced with each selected transmission node one by one, and the combined gain of each new selected transmission node after replacement is calculated. Calculate if , then each selected transmission node after replacement is selected as a new transmission node cooperation strategy; According to the formula Calculate the new data flow score of each high-speed transmission node, They are respectively represented as the remaining bandwidth and processing capacity of each selected transmission node, They represent the weight factors corresponding to the remaining bandwidth and processing capacity of each high-speed transmission node. They represent the weight factors corresponding to the remaining bandwidth and processing capacity of each selected transmission node, Represented as the total data traffic to be allocated.

[0028] It should be noted that the channel gain between each selected transmission node and the downhole data acquisition transmitter and the uphole data center server, as well as the channel gain between each high-speed transmission node other than the selected transmission node and the downhole data acquisition transmitter and the uphole data center server, are calculated by dividing the signal transmission strength of the downhole data acquisition transmitter by the signal receiving strength of the transmission node, and the signal transmission strength of the transmission node by the signal receiving strength of the uphole data center server. Specifically, if the signal transmission strength of the downhole data acquisition transmitter is 0.1W and the signal receiving strength of a selected transmission node is 0.001W, then the channel gain between the selected transmission node and the downhole data acquisition transmitter is 0.001 / 0.1=0.01.

[0029] The communication data transmission of underground operations is received in real time through the server in the uphole data center, and abnormal warnings are issued based on the received communication data of underground operations.

[0030] To sum up, in the present invention, various data of underground operations are collected in real time through the underground data acquisition sending end and divided into copies for sending, so as to ensure the comprehensiveness and reliability of data collection; the data transmission node unit adopts a distributed setting and a communication method combining optical fiber and wireless, which enhances the stability and flexibility of the system; the transmission node state analysis unit performs comprehensive calculation and analysis on the communication and data transmission parameters of each node module to obtain the node transmission state coefficient, which provides a basis for subsequent optimization, can keep the signal stable in the complex environment of the underground, and reduce data loss; the transmission node collaboration strategy unit distinguishes the node state by setting a threshold, selects the high-speed transmission node and calculates the combined gain and the data flow score, and generates the optimal collaboration strategy, which can make full use of node resources, avoid overload, improve bandwidth utilization, and can also dynamically adjust the transmission node collaboration strategy according to actual conditions; the on-site data center server receives data in real time and issues abnormal warnings to ensure the safety and efficiency of underground operations. The overall solution effectively improves the reliability, stability and resource utilization efficiency of remote communication data transmission of underground operations.

[0031] The above formulas are all dimensionless and numerical calculations. The formula is a formula that is obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The size of the coefficient is to quantify each parameter to obtain a specific value. Regarding the size of the coefficient, it is acceptable as long as it does not affect the proportional relationship between the parameter and the quantified value.

[0032] In addition, those skilled in the art will appreciate that various aspects of the present invention may be illustrated and described by a number of patentable categories or situations, including any new and useful process, machine, product or combination of substances, or any new and useful improvements thereto. Accordingly, various aspects of the present invention may be performed entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. The above hardware or software may all be referred to as "data blocks", "modules", "engines", "units", "components" or "systems". In addition, various aspects of the present invention may be represented as a computer product located in one or more computer-readable media, which includes computer-readable program code.

[0033] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0034] The above is an explanation of the present invention and should not be considered as a limitation thereof. Although several exemplary embodiments of the present invention have been described, it will be readily appreciated by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present invention. Therefore, all such modifications are intended to be included within the scope of the present invention as defined in the claims. It should be understood that the above is an explanation of the present invention and should not be considered as being limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The present invention is defined by the claims and their equivalents.

Claims

1. A remote communication data transmission system adapted for underground operations, characterized in that: The remote communication data transmission system comprises: a downhole data acquisition and transmission end, a data transmission node unit, a transmission node status analysis unit, a transmission node cooperation strategy unit and an uphole data center server; the downhole data acquisition and transmission end collects various communication data of downhole operations and divides them into several copy files and sends them to the data transmission node unit for transfer; before the collected communication data is sent to the uphole data center server through the data transmission node unit, the transmission node status analysis unit is used to select the optimal node for the operation node in the data transmission node unit in advance, and the data flow is reasonably allocated to the selected optimal node; The downhole data acquisition transmitter is used to collect and acquire the working voltage, current, temperature parameters of various acquisition sensors and the status data of personnel in downhole operations in real time, and divide the data into multiple data packets and send them to the data transmission node unit, and record the signal transmission strength value and the total number of data packets sent by the downhole data acquisition transmitter in each transmission period in each transmission cycle; The data transmission node unit includes a plurality of node modules arranged in a distributed manner and a plurality of corresponding wireless communication transmission modules; The transmission node state analysis unit performs comprehensive calculation and analysis on the communication data transmission parameters of each node module in the distributed setting corresponding to each transmission time period in each transmission cycle, and obtains the node transmission state coefficient of each node module corresponding to each transmission time period in each transmission cycle. ; The transmission node cooperation strategy unit analyzes the node transmission status of each node module corresponding to each transmission cycle to generate the optimal transmission node cooperation strategy.

2. The remote communication data transmission system suitable for underground operations according to claim 1, characterized in that: Each node module of the distributed arrangement is connected to the downhole data acquisition and transmission end by means of an optical fiber network for communication, and at the same time, several node modules of the distributed arrangement are connected to the uphole data center server through several correspondingly arranged wireless communication transmission modules.

3. The remote communication data transmission system suitable for underground operations according to claim 1, characterized in that: The communication data transmission parameters include signal strength parameters, transmission rate parameters, packet loss rate and average delay.

4. The remote communication data transmission system suitable for underground operations according to claim 3, characterized in that: The specific calculation and analysis method for the communication data transmission parameters of each node module in the distributed setting corresponding to each transmission time period in each transmission cycle is as follows: The signal receiving strength and signal transmission rate of each node module in each transmission period in each transmission cycle are obtained, and normalized to obtain the average signal strength and average transmission rate of each node module in each transmission period after normalization, which are recorded as and ; At the same time, the signal strength stability value of each node module in each transmission cycle is calculated by the standard deviation of the signal reception strength of each node module in each transmission period and the maximum signal reception strength of each node module in each transmission period. , The transmission rate difference value of each node module in each transmission cycle is calculated by dividing the standard deviation of the transmission rate of each node module in each transmission cycle by the average transmission rate, and then the transmission rate difference value of each node module in each transmission cycle is calculated by combining the maximum transmission rate difference. , The packet loss rate of each node module in each transmission period is calculated by the total number of received data packets in each transmission period of each node module, the total number of sent data packets recorded by the downhole data acquisition transmitter, and the set maximum packet loss rate, which is recorded as , The average delay of each node module in each transmission cycle is calculated by the time point of sending data packets and receiving data packets in each transmission period of each node module, which is recorded as , By comprehensively calculating and analyzing the above signal strength parameters, transmission rate parameters, packet loss rate and average delay, and setting corresponding weight factors based on the influence of each parameter on the transmission state, the node transmission state coefficient of each node module corresponding to each transmission cycle is obtained. .

5. The remote communication data transmission system suitable for underground operations according to claim 4, characterized in that: Each node module corresponds to a node transmission state coefficient in each transmission cycle , the specific calculation and analysis method is as follows: According to the formula Calculate the node transmission state coefficient of each node module corresponding to each transmission cycle , w1, w2, w3 and w4 all represent weight factors set for corresponding parameters.

6. The remote communication data transmission system suitable for underground operations according to claim 1, characterized in that: The node transmission status of each node module in each transmission cycle is analyzed. The specific analysis method is as follows: By collecting the node transmission state coefficients under different mining operation periods, different equipment operating conditions and different geological conditions, and calculating the average value, we take the value that is 10% higher as the good threshold of the node transmission state coefficient, and take the value that is 5% lower as the bad threshold of the node transmission state coefficient; The node transmission state coefficient of each node module corresponding to each transmission cycle is greater than the node transmission state coefficient excellent threshold value and is marked as a high-speed transmission node. The remaining bandwidth and processing capacity of each high-speed transmission node are obtained and recorded as ; First, r high-speed transmission nodes are selected from q high-speed transmission nodes as the selected transmission nodes for data transmission. The channel gains between each selected transmission node and the downhole data acquisition transmitter and the uphole data center server are calculated and recorded as , and also calculate the channel gain between each high-speed transmission node except the selected transmission node and the downhole data acquisition transmitter and the uphole data center server. According to the formula Calculate the combined gain of each currently selected transmission node Then, the channel gains between each high-speed transmission node and the downhole data acquisition transmitter and the uphole data center server are replaced with each selected transmission node one by one, and the combined gain of each new selected transmission node after replacement is calculated. Calculate if , then each selected transmission node after replacement is selected as a new transmission node cooperation strategy; According to the formula Calculate the new data flow score of each high-speed transmission node, They are respectively represented as the remaining bandwidth and processing capacity of each selected transmission node, They represent the weight factors corresponding to the remaining bandwidth and processing capacity of each high-speed transmission node. They represent the weight factors corresponding to the remaining bandwidth and processing capacity of each selected transmission node, Represented as the total data traffic to be allocated.

Images