Remote communication control method for spraying and diluting sulfur-gas-rich surrounding rock tunnel

Abstract

The invention discloses a remote communication control method for spraying and diluting a sulfur-gas-rich surrounding rock tunnel, and particularly relates to the technical field of underground construction environment safety. The remote communication control method comprises the steps that S1, a hydrogen sulfide sensor and a wireless communication module are installed in the tunnel; s2, a spray head, a connecting pump, a liquid storage tank, a pipeline, a valve and an electric appliance control system are installed in the tunnel; s3, the gas sensor monitors the hydrogen sulfide concentration in real time, and data are transmitted through the wireless communication module; s4, analyzing the data transmitted by the wireless communication module through the configuration control center; s5, making a decision instruction according to the analysis of the control center, and automatically starting spraying equipment to reduce the gas concentration; the sensor accurately measures the concentration of hydrogen sulfide according to the electrochemical detection principle and transmits data to a control center through the wireless communication module, and through the equipment, the health hazard of hydrogen sulfide gas to constructors can be effectively prevented, and the safety of tunnel construction and the quality of the working environment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground construction environment safety, and more specifically, to a remote communication control method for spraying and dilution of a sulfide-rich gas surrounding rock tunnel. Background Art

[0002] During tunnel construction, the monitoring and control of hydrogen sulfide gas has always been an important part of ensuring construction safety. Hydrogen sulfide gas is a toxic gas with a strong irritating odor. When the concentration is high, it is extremely harmful to the human body and may even be life-threatening. Traditional hydrogen sulfide gas monitoring and control methods usually rely on manual detection and manual operation, which have problems such as untimely response, cumbersome operation, and incomplete monitoring. With the continuous increase in tunnel construction projects and the increase in construction difficulty, the demand for automation and intelligence of hydrogen sulfide gas monitoring and control is becoming more and more urgent.

[0003] Although some automated gas detection and spraying systems have been adopted in the prior art, the following deficiencies still exist: first, the layout and installation position of the sensors are not reasonable enough to fully cover every corner of the tunnel, resulting in the existence of monitoring blind spots; second, the data transmission method is relatively backward and cannot achieve real-time and reliable data transmission, affecting the timeliness and accuracy of the monitoring data; third, the control method of the spraying system is single and lacks intelligent and automated adjustment means, making it difficult to make dynamic adjustments according to actual conditions, resulting in unsatisfactory spraying effects.

[0004] In order to solve the above problems, the present invention proposes a spraying and dilution method for sulfide-rich gas surrounding rock tunnels based on remote communication control. By reasonably arranging sensors and spraying systems, real-time monitoring and intelligent control of hydrogen sulfide gas can be achieved to ensure that the gas concentration in the tunnel is always maintained within a safe range, thereby protecting the health and safety of construction workers. This method combines modern communication technology, sensor technology and automatic control technology, and significantly improves the efficiency and reliability of hydrogen sulfide gas monitoring and control. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a remote communication control method for spraying and dilution of a sulfide-rich gas surrounding rock tunnel. The device realizes real-time monitoring and automatic control of the hydrogen sulfide concentration in the tunnel, and has significant beneficial effects. First, the sensor accurately measures the hydrogen sulfide concentration through the electrochemical detection principle, and transmits the data to the control center through the wireless communication module, realizing real-time and reliable transmission of data. Secondly, after receiving the data, the control center can analyze and make decisions in time, and start or stop the spraying equipment by automatically generating control instructions to ensure that the hydrogen sulfide concentration in the tunnel is always maintained within a safe range. In addition, the spraying system is scientifically designed, the nozzle installation position is reasonable, and the arrangement of the pump and the liquid storage tank ensures efficient transportation and spraying of the liquid. The automation and remote control functions of the entire system greatly reduce the need for manual intervention and improve operational efficiency and safety. Through this equipment, the health hazards of hydrogen sulfide gas to construction workers can be effectively prevented, and the safety of tunnel construction and the quality of the working environment can be improved.

[0006] To achieve the above object, the present invention provides the following technical solution: a remote communication control method for spraying and dilution of a sulfide-rich gas surrounding rock tunnel, wherein the protection method comprises the following steps:

[0007] S1: Install hydrogen sulfide sensors and wireless communication modules at tunnel entrances, exits, construction areas and low-lying areas;

[0008] S2: Install sprinklers every 30 meters in the tunnel, connect pumps, liquid storage tanks, pipes and valves;

[0009] S3: The gas sensor monitors the concentration of hydrogen sulfide in real time and transmits data through the wireless communication module;

[0010] S4: Analyze the data transmitted by the wireless communication module and make decision instructions through the configuration control center;

[0011] S5: According to the decision-making instructions of the control center, the spraying equipment is automatically started to reduce the gas concentration;

[0012] In a preferred embodiment: in step S1, hydrogen sulfide sensors and wireless communication modules are installed every 20-30 meters inside the tunnel and 1.5-2 meters above the ground. A wireless communication module is installed on the side of each hydrogen sulfide sensor, and the wireless communication module is electrically connected to the output end of the sensor through a wire. The hydrogen sulfide sensor adopts the electrochemical detection principle, and the electrode material reacts with the hydrogen sulfide gas to generate a current signal proportional to the concentration of the hydrogen sulfide gas;

[0013] The relationship between the current signal and the hydrogen sulfide gas concentration is expressed as:

[0014] Among them, I outputis the sensor output current, k is the sensor sensitivity coefficient, is the concentration of hydrogen sulfide gas;

[0015] In a preferred embodiment: in step S2, a nozzle is installed every 20-30 meters in the tunnel, the nozzle is installed on the top of the tunnel, and the nozzle is firmly installed by a bracket; the pump and the liquid storage tank are installed at the entrance and exit of the tunnel; the nozzle, the pump and the liquid storage tank are connected through a pipeline, a control pump and an electric valve are installed on the outer wall of the pipeline, and an electrical control system is set at the entrance of the tunnel, and the electrical control system is connected to the control pump and the electric valve by wires.

[0016] In a preferred embodiment: in step S3, the current signal output by the sensor is converted into a voltage signal through a load resistor: V output =I output ·R load ,

[0017] Among them, V output is the converted voltage signal, R load is the load resistance;

[0018] The wireless communication module transmits the sensor data to the remote control center via radio waves; the wireless communication module modulates the voltage signal and converts it into a wireless signal suitable for transmission;

[0019] The power loss and gain during transmission are: P recv =P trans -L path +G trans +G recv ;

[0020] Among them, P recv is the signal power at the receiving end, P trans is the signal power at the transmitting end, L path is the path loss, G trans is the transmitting antenna gain, G recv is the receiving antenna gain.

[0021] In a preferred embodiment: in step S4, the control center receives data from each hydrogen sulfide sensor in the tunnel through the wireless communication module, and then verifies the data through a CRC and checksum combination algorithm.

[0022] CRC: Where Data is the data to be sent, n is the order of the generator polynomial, and Generator Polynomial is the predefined generator polynomial.

[0023] Checksum:

[0024] Where Data i is the i-th data byte, and n is the number of bytes of data;

[0025] Data and checksum are combined to obtain: Combined Check = CRC (Checksum (Data)), where Checksum (Data) is the result of first performing checksum processing on the data, and then performing CRC processing on this result to obtain the final combined check code;

[0026] De-noising is performed on the received data, and the random noise in the signal is removed using a filtering algorithm, and invalid data points are detected and eliminated; a reasonable threshold range is set, and the normal data range is determined based on historical data and statistical analysis, and abnormal values ​​that exceed the threshold range are filtered out.

[0027] Outlier filtering:

[0028] Among them, μ is the mean of the data, σ is the standard deviation, and the reasonable threshold range is ±3 times the standard deviation of the mean;

[0029] Store the verified and filtered data in the database and record each data with a timestamp; analyze the received hydrogen sulfide concentration data:

[0030] in, is the average hydrogen sulfide concentration, N is the number of sampling times, is the hydrogen sulfide concentration of the i-th sampling;

[0031] Smooth the hydrogen sulfide concentration data:

[0032] in, is the hydrogen sulfide concentration after exponential smoothing, α is the smoothing coefficient (0<α<1), is the hydrogen sulfide concentration after the previous smoothing;

[0033] Perform weighted averaging on the data, centering on the current data point, and assigning different weights to different time points:

[0034] in, is the hydrogen sulfide concentration after exponential smoothing, α is the smoothing coefficient (0<α<1), is the hydrogen sulfide concentration after the previous smoothing;

[0035] Threshold judgment: Fixed threshold judgment: Set a fixed hydrogen sulfide concentration threshold. When the real-time monitored hydrogen sulfide concentration exceeds the threshold, the system triggers an alarm:

[0036]

[0037] Wherein, A is the alarm signal, Threshold is the preset fixed hydrogen sulfide concentration threshold;

[0038] Use the sliding window average algorithm to perform sliding window average processing on real-time data:

[0039] Where W is the sliding window size, is the hydrogen sulfide concentration after sliding window average,

[0040] Use the outlier removal algorithm to remove outliers from real-time data before judgment, and use the median absolute deviation method to detect and remove outliers: MAD = median

[0041]

[0042] The outlier threshold is set to k×MAD, where k is a constant. When the data exceeds this range, it is regarded as an outlier and removed.

[0043] In a preferred embodiment: in step S5, the control center obtains an alarm signal A through data analysis of S4:

[0044] Among them I decision : is a decision instruction variable, Start Spray is an instruction to start the spraying equipment, and Stop Spray is an instruction to stop the spraying equipment;

[0045] After receiving the control command, the spraying equipment control system performs the corresponding operation:

[0046] If A=1, it means the real-time monitored hydrogen sulfide concentration If the preset fixed threshold Threshold is exceeded, the command Start Spray is generated, i.e. the spraying equipment is started;

[0047] Start the spraying equipment: Start the pump: control the pump to start and transport the spraying liquid in the storage tank to the sprinkler through the pipeline;

[0048] Open valve: control the valve to open, allowing the spraying liquid to flow to the nozzle;

[0049] Spraying liquid: Control the nozzle to start spraying liquid to reduce the concentration of hydrogen sulfide in the tunnel;

[0050] If A = 0, it means the real-time monitored hydrogen sulfide concentration C H2S,real-timeIf it is lower than the preset fixed threshold Threshold, the command Stop Spray is generated, that is, the spraying equipment is stopped;

[0051] Stop spraying equipment: Close valve: Control valve to close and stop liquid flow;

[0052] Stop pump: Control the pump to stop running and stop liquid delivery.

[0053] Technical effects and advantages of the present invention: The equipment realizes real-time monitoring and automatic control of hydrogen sulfide concentration in the tunnel, and has significant beneficial effects. First, the sensor accurately measures the hydrogen sulfide concentration through the electrochemical detection principle, and transmits the data to the control center through the wireless communication module, realizing real-time and reliable transmission of data. Secondly, after receiving the data, the control center can analyze and make decisions in time, and start or stop the spraying equipment by automatically generating control instructions to ensure that the hydrogen sulfide concentration in the tunnel is always maintained within a safe range. In addition, the spraying system is scientifically designed, the nozzle is reasonably installed, and the arrangement of the pump and the liquid storage tank ensures efficient delivery and spraying of the liquid. The automation and remote control functions of the entire system greatly reduce the need for manual intervention and improve operational efficiency and safety. Through this equipment, the health hazards of hydrogen sulfide gas to construction workers can be effectively prevented, and the safety of tunnel construction and the quality of the working environment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a schematic diagram of the working steps of the present invention. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] Example embodiments will now be described more fully with reference to the accompanying drawings, S1: installing a hydrogen sulfide sensor and a wireless communication module inside a tunnel;

[0057] S2: Install sprinklers in the tunnel and connect pumps, liquid storage tanks, pipes, valves and electrical control systems;

[0058] S3: The gas sensor monitors the concentration of hydrogen sulfide in real time and transmits data through the wireless communication module;

[0059] S4: Analyze and make analysis of the data transmitted by the wireless communication module through the configuration control center;

[0060] S5: Make decision instructions based on the analysis of the control center, automatically start the spraying equipment and reduce the gas concentration;

[0061] In step S1, hydrogen sulfide sensors and wireless communication modules are installed every 20-30 meters inside the tunnel and at a height of 1.5-2 meters from the ground. A wireless communication module is installed on the side of each hydrogen sulfide sensor, and the wireless communication module is electrically connected to the output end of the sensor through a wire. The hydrogen sulfide sensor adopts the electrochemical detection principle, and the electrode material reacts with the hydrogen sulfide gas to generate a current signal proportional to the concentration of the hydrogen sulfide gas;

[0062] The relationship between the current signal and the hydrogen sulfide gas concentration is expressed as:

[0063] Among them, I output is the sensor output current, k is the sensor sensitivity coefficient, is the concentration of hydrogen sulfide gas;

[0064] A hydrogen sulfide sensor is installed every 20-30 meters inside the tunnel. These sensors are installed at a height of 1.5-2 meters from the ground to better monitor the concentration of hydrogen sulfide in the tunnel. Each hydrogen sulfide sensor is equipped with a wireless communication module on the side. These modules are connected to the output end of the sensor through wires to ensure that the data can be transmitted accurately. The hydrogen sulfide sensor uses the electrochemical detection principle. The electrode material inside the sensor reacts chemically with the hydrogen sulfide gas to generate a current signal. The intensity of this current signal is proportional to the concentration of hydrogen sulfide gas. In other words, when the concentration of hydrogen sulfide gas increases, the current signal generated by the sensor will also increase. Specifically, the relationship between the current signal and the concentration of hydrogen sulfide gas can be simply understood as follows: the greater the current generated by the sensor, the higher the concentration of hydrogen sulfide in the air. This sensor has high sensitivity and can detect changes in hydrogen sulfide gas in the tunnel in a timely manner, ensuring that measures can be taken quickly when the concentration exceeds the standard.

[0065] A nozzle is installed every 20-30 meters in the tunnel. The nozzle is installed on the top of the tunnel and is firmly installed by a bracket. The pump and the liquid storage tank are installed at the entrance and exit of the tunnel. The nozzle, pump and liquid storage tank are connected through pipes. A control pump and an electric valve are installed on the outer wall of the pipe. An electrical control system is set at the entrance of the tunnel. The electrical control system is connected to the control pump and the electric valve by wires. A nozzle is installed every 20-30 meters inside the tunnel. These nozzles are installed on the top of the tunnel and firmly fixed by brackets to ensure the stability and coverage of the spraying system. Each nozzle is designed to spray liquid evenly and effectively reduce the concentration of hydrogen sulfide in the tunnel. The pump and liquid storage tank are installed at the entrance and exit of the tunnel respectively to ensure that the liquid can be delivered to various locations in the tunnel in time. The nozzle, pump and liquid storage tank are connected by pipes to form a complete spraying system. These pipes are scientifically designed to efficiently transport liquids and ensure the normal operation of the spraying system. Devices for controlling pumps and electric valves are installed on the outer wall of the pipe to facilitate precise control of the spraying system. These control devices are connected to the electrical control system at the tunnel entrance through wires to form an integrated control network. The electrical control system can automatically adjust the operating status of the spraying equipment according to the monitored hydrogen sulfide concentration, including starting and stopping the pump, opening and closing the electric valve and other operations. The design of the electrical control system ensures that the spraying system in the tunnel can quickly respond to changes in hydrogen sulfide concentration, spray in time, reduce gas concentration, and ensure the air quality in the tunnel and the safety of construction workers.

[0066] In step S3, the current signal output by the sensor is converted into a voltage signal through a load resistor: V output =I output ·R load ,

[0067] Among them, V output is the converted voltage signal, R load is the load resistance;

[0068] The wireless communication module transmits the sensor data to the remote control center via radio waves; the wireless communication module modulates the voltage signal and converts it into a wireless signal suitable for transmission;

[0069] The power loss and gain during transmission are: P recv =P trans -L path +G trans +G recv ;

[0070] Among them, P recv is the signal power at the receiving end, P trans is the signal power at the transmitting end, L path is the path loss, Gtrans is the transmitting antenna gain, G recv is the receiving antenna gain;

[0071] The gas sensor monitors the concentration of hydrogen sulfide in the tunnel in real time and transmits the data to the remote control center through the wireless communication module. The hydrogen sulfide sensor adopts the electrochemical detection principle, and the electrode material reacts with the hydrogen sulfide gas to generate a current signal proportional to the concentration of hydrogen sulfide gas. In order to be able to process and transmit these signals later, the current signal output by the sensor is converted into a voltage signal using a load resistor. After receiving the voltage signal from the sensor, the wireless communication module modulates the signal and converts it into a signal suitable for wireless transmission. The modulated wireless signal is transmitted to the remote control center via radio waves to ensure that the data can be sent in real time and reflect the hydrogen sulfide concentration in the tunnel in a timely manner. During the transmission process, the wireless communication module will process the power loss and gain of the signal to ensure the transmission quality of the signal. Specifically, factors such as the signal power, path loss, transmitting antenna gain and receiving antenna gain at the transmitting end are taken into account to ensure that the signal can be effectively transmitted to the receiving end. This series of operations ensures the real-time and accurate transmission of hydrogen sulfide concentration data, providing a reliable basis for subsequent control decisions.

[0072] In step S4, the control center receives data from each hydrogen sulfide sensor in the tunnel through the wireless communication module, and then verifies the data through the CRC and checksum combination algorithm.

[0073] CRC: Where Data is the data to be sent, n is the order of the generator polynomial, and Generator Polynomial is the predefined generator polynomial.

[0074] Checksum:

[0075] Where Data i is the i-th data byte, and n is the number of bytes of data;

[0076] Data and checksum are combined to obtain: Combined Check = CRC (Checksum (Data)), where Checksum (Data) is the result of first performing checksum processing on the data, and then performing CRC processing on this result to obtain the final combined check code;

[0077] De-noising is performed on the received data, and the random noise in the signal is removed using a filtering algorithm, and invalid data points are detected and eliminated; a reasonable threshold range is set, and the normal data range is determined based on historical data and statistical analysis, and abnormal values ​​that exceed the threshold range are filtered out.

[0078] Outlier filtering:

[0079] Among them, μ is the mean of the data, σ is the standard deviation, and the reasonable threshold range is ±3 times the standard deviation of the mean;

[0080] Store the verified and filtered data in the database and record each data with a timestamp; analyze the received hydrogen sulfide concentration data:

[0081] in, is the average hydrogen sulfide concentration, N is the number of sampling times, is the hydrogen sulfide concentration of the i-th sampling;

[0082] Smooth the hydrogen sulfide concentration data:

[0083] in, is the hydrogen sulfide concentration after exponential smoothing, α is the smoothing coefficient (0<α<1), is the hydrogen sulfide concentration after the previous smoothing;

[0084] Perform weighted averaging on the data, centering on the current data point, and assigning different weights to different time points:

[0085] in, is the hydrogen sulfide concentration after exponential smoothing, α is the smoothing coefficient (0<α<1), is the hydrogen sulfide concentration after the previous smoothing;

[0086] Threshold judgment: Fixed threshold judgment: Set a fixed hydrogen sulfide concentration threshold. When the real-time monitored hydrogen sulfide concentration exceeds the threshold, the system triggers an alarm:

[0087]

[0088] Wherein, A is the alarm signal, Threshold is the preset fixed hydrogen sulfide concentration threshold;

[0089] Use the sliding window average algorithm to perform sliding window average processing on real-time data:

[0090] Where W is the sliding window size, is the hydrogen sulfide concentration after sliding window averaging,

[0091] Use the outlier removal algorithm to remove outliers from real-time data before judgment, and use the median absolute deviation method to detect and remove outliers: MAD = median

[0092]

[0093] The outlier threshold is set to k×MAD, where k is a constant. When the data exceeds this range, it is considered as an outlier and removed.

[0094] The control center receives data from various hydrogen sulfide sensors in the tunnel through the wireless communication module and analyzes and processes the data. First, after receiving the data transmitted by the sensor, the control center will verify the data to ensure that there are no errors in the data transmission process. The combination of cyclic redundancy check (CRC) and checksum can effectively detect and correct errors in data transmission. Next, the control center will denoise the received data, use a filtering algorithm to remove random noise in the signal, and detect and remove invalid data points to ensure the reliability of the data. The processed data will be stored in the database, which uses a timestamp to record each data for subsequent analysis. In the data analysis stage, the control center will calculate and analyze the received hydrogen sulfide concentration data, calculate the average value, and smooth the data to ensure the accuracy and reliability of the data analysis. According to historical data and statistical analysis, a reasonable hydrogen sulfide concentration threshold is set. When the real-time monitored hydrogen sulfide concentration exceeds the preset threshold, the system will trigger an alarm signal. Through these steps, the control center can monitor the hydrogen sulfide concentration in the tunnel in real time and respond in time when the concentration exceeds the safety threshold to ensure the safety of construction workers.

[0095] In step S5, the control center obtains an alarm signal A through data analysis in S4:

[0096] Among them I decision : is a decision instruction variable, Start Spray is an instruction to start the spraying equipment, and Stop Spray is an instruction to stop the spraying equipment;

[0097] After receiving the control command, the spraying equipment control system performs the corresponding operation:

[0098] If A = 1, it means the real-time monitored hydrogen sulfide concentration C H2S,real-time If the preset fixed threshold Threshold is exceeded, the command Start Spray is generated, i.e. the spraying equipment is started;

[0099] Start the spraying equipment: Start the pump: control the pump to start and transport the spraying liquid in the storage tank to the sprinkler through the pipeline;

[0100] Open valve: control the valve to open, allowing the spraying liquid to flow to the nozzle;

[0101] Spraying liquid: Control the nozzle to start spraying liquid to reduce the concentration of hydrogen sulfide in the tunnel;

[0102] If A = 0, it means the real-time monitored hydrogen sulfide concentration C H2S,real-time If it is lower than the preset fixed threshold Threshold, the command Stop Spray is generated, that is, the spraying equipment is stopped;

[0103] Stop spraying equipment: Close valve: Control valve to close and stop liquid flow;

[0104] Stop pump: control the pump to stop running and stop liquid delivery;

[0105] According to the analysis results of the control center, the system will make corresponding decision instructions and automatically start the spraying equipment to reduce the concentration of hydrogen sulfide in the tunnel. The control center first compares the real-time monitored hydrogen sulfide concentration data with the preset fixed threshold to determine whether the spraying equipment needs to be started. If the monitored hydrogen sulfide concentration exceeds the preset threshold, the system will generate an instruction to start the spraying equipment; if the concentration is lower than the threshold, an instruction to stop the spraying equipment is generated. The generated control instruction is sent to the spraying equipment control system in the tunnel through the wireless communication module. After receiving the control instruction, the spraying equipment control system performs the corresponding operation: when receiving the start instruction, the system will start the pump to transport the spraying liquid in the storage tank to the nozzle through the pipeline, and open the valve at the same time to allow the liquid to flow to the nozzle, start spraying the liquid, and reduce the concentration of hydrogen sulfide in the tunnel; when receiving the stop instruction, the system will close the valve, stop the flow of liquid, and stop the operation of the pump. The control center will continuously monitor the concentration of hydrogen sulfide in the tunnel, dynamically adjust the operating status of the spraying equipment according to real-time data, and ensure that the concentration of hydrogen sulfide remains within a safe range. Through the above steps, the system can automatically control the operation of the spraying equipment efficiently and accurately, ensuring the air quality in the tunnel and the safety of construction workers.

[0106] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0107] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0108] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0109] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0110] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0111] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0112] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A remote communication control method for spraying and dilution of a sulfide-rich gas surrounding rock tunnel, characterized in that: The protection method comprises the following steps: S1: Install hydrogen sulfide sensors and wireless communication modules inside the tunnel; S2: Install sprinklers in the tunnel and connect pumps, liquid storage tanks, pipes, valves and electrical control systems; S3: The gas sensor monitors the concentration of hydrogen sulfide in real time and transmits data through the wireless communication module; S4: Analyze and make analysis of the data transmitted by the wireless communication module through the configuration control center; S5: Make decision instructions based on the analysis of the control center, automatically start the spraying equipment and reduce the gas concentration.

2. The remote communication control method for spraying and dilution of a sulfide-rich gas surrounding rock tunnel according to claim 1 is characterized in that: In step S1, hydrogen sulfide sensors and wireless communication modules are installed every 20-30 meters inside the tunnel and at a height of 1.5-2 meters from the ground. A wireless communication module is installed on the side of each hydrogen sulfide sensor, and the wireless communication module is electrically connected to the output end of the sensor through a wire. The hydrogen sulfide sensor adopts the electrochemical detection principle, and the electrode material reacts with the hydrogen sulfide gas to generate a current signal proportional to the concentration of the hydrogen sulfide gas; The relationship between the current signal and the hydrogen sulfide gas concentration is expressed as: Among them, I output is the sensor output current, k is the sensor sensitivity coefficient, is the concentration of hydrogen sulfide gas.

3. The remote communication control method for spraying and dilution of a sulfide-rich gas surrounding rock tunnel according to claim 1 is characterized in that: In step S2, a nozzle is installed every 20-30 meters in the tunnel. The nozzle is installed on the top of the tunnel and is firmly installed by a bracket; the pump and the liquid storage tank are installed at the entrance and exit of the tunnel; the nozzle, the pump and the liquid storage tank are connected through a pipeline, a control pump and an electric valve are installed on the outer wall of the pipeline, and an electrical control system is set at the entrance of the tunnel, and the electrical control system is connected to the control pump and the electric valve by wires.

4. The remote communication control method for spraying and dilution of a sulfide-rich gas surrounding rock tunnel according to claim 1 is characterized in that: In step S3, the current signal output by the sensor is converted into a voltage signal through a load resistor: V output =I output ·R load , Among them, V output is the converted voltage signal, R load is the load resistance; The wireless communication module transmits the sensor data to the remote control center via radio waves; the wireless communication module modulates the voltage signal and converts it into a wireless signal suitable for transmission; The power loss and gain during transmission are: P recv =P trans -L path +G trans +G recv ; Among them, P recv is the signal power at the receiving end, P trans is the signal power at the transmitting end, L path is the path loss, G trans is the transmitting antenna gain, G recv is the receiving antenna gain.

5. The remote communication control method for spraying and dilution of a sulfide-rich gas surrounding rock tunnel according to claim 1 is characterized in that: In step S4, the control center receives data from each hydrogen sulfide sensor in the tunnel through the wireless communication module, and then verifies the data through the CRC and checksum combination algorithm. CRC: Where Data is the data to be sent, n is the order of the generator polynomial, and Generator Polynomial is the predefined generator polynomial. Checksum: Where Data i is the i-th data byte, and n is the number of bytes of data; Data and checksum are combined to obtain: Combined Check = CRC (Checksum (Data)), where Checksum (Data) is the result of first performing checksum processing on the data, and then performing CRC processing on this result to obtain the final combined check code; De-noising is performed on the received data, and the random noise in the signal is removed using a filtering algorithm, and invalid data points are detected and eliminated; a reasonable threshold range is set, and the normal data range is determined based on historical data and statistical analysis, and abnormal values ​​that exceed the threshold range are filtered out. Outlier filtering: Among them, μ is the mean of the data, σ is the standard deviation, and the reasonable threshold range is ±3 times the standard deviation of the mean; Store the verified and filtered data in the database and record each data with a timestamp; analyze the received hydrogen sulfide concentration data: in, is the average hydrogen sulfide concentration, N is the number of sampling times, is the hydrogen sulfide concentration of the i-th sampling; Smooth the hydrogen sulfide concentration data: in, is the hydrogen sulfide concentration after exponential smoothing, α is the smoothing coefficient (0<α<1), is the hydrogen sulfide concentration after the previous smoothing; Perform weighted averaging on the data, centering on the current data point, and assigning different weights to different time points: in, is the hydrogen sulfide concentration after exponential smoothing, α is the smoothing coefficient (0<α<1), is the hydrogen sulfide concentration after the previous smoothing; Threshold judgment: Fixed threshold judgment: Set a fixed hydrogen sulfide concentration threshold. When the real-time monitored hydrogen sulfide concentration exceeds the threshold, the system triggers an alarm: Wherein, A is the alarm signal, Threshold is the preset fixed hydrogen sulfide concentration threshold; Use the sliding window average algorithm to perform sliding window average processing on real-time data: Where W is the sliding window size, is the hydrogen sulfide concentration after sliding window averaging, Use the outlier removal algorithm to remove outliers from real-time data before judgment, and use the median absolute deviation method to detect and remove outliers: The outlier threshold is set to k×MAD, where k is a constant. When the data exceeds this range, it is regarded as an outlier and removed.

6. The remote communication control method for spraying and dilution of a sulfide-rich gas surrounding rock tunnel according to claim 1 is characterized in that: In step S5, the control center obtains an alarm signal A through data analysis in S4: Among them I decision : is a decision instruction variable, Start Spray is an instruction to start the spraying equipment, and Stop Spray is an instruction to stop the spraying equipment; After receiving the control command, the spraying equipment control system performs the corresponding operation: If A = 1, it means the real-time monitored hydrogen sulfide concentration C H2S,real-time If the preset fixed threshold Threshold is exceeded, the command Start Spray is generated, i.e. the spraying equipment is started; Start the spraying equipment: Start the pump: control the pump to start and transport the spraying liquid in the storage tank to the sprinkler through the pipeline; Open valve: control the valve to open, allowing the spraying liquid to flow to the nozzle; Spraying liquid: Control the nozzle to start spraying liquid to reduce the concentration of hydrogen sulfide in the tunnel; If A = 0, it means the real-time monitored hydrogen sulfide concentration C H2S,real-time If it is lower than the preset fixed threshold Threshold, the command Stop Spray is generated, that is, the spraying equipment is stopped; Stop spraying equipment: Close valve: Control valve to close and stop liquid flow; Stop pump: Control the pump to stop running and stop liquid delivery.

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