Analysis method of gas analysis instrument

Abstract

The invention discloses an analysis method of a gas analysis instrument, and relates to the technical field of gas analysis, the gas analysis instrument comprises an information measuring module, a gas round-trip module and a concentration adjusting module, the information measuring module is used for monitoring the working environment of an underground mine in real time, obtaining various characteristic parameters and transmitting information to the concentration adjusting module, and the concentration adjusting module is used for adjusting the gas round-trip module. The gas back-and-forth module is used for reducing the concentration of harmful gas by circulating fresh air and preventing accidents caused by high-concentration harmful gas in the underground mine, and the concentration adjusting module is used for adjusting the concentration of the harmful gas and ensuring that the underground mine keeps a proper concentration range during working; the information measurement module comprises a personnel number counting module, an oxygen concentration detection module, a gas concentration detection module and a timing module, and the personnel number counting module and the gas concentration detection module are both electrically connected with the timing module and the information receiving and transmitting module.

Description

Technical Field

[0001] The invention relates to the technical field of gas analysis, and in particular to an analysis method of a gas analysis instrument. Background Art

[0002] In underground mine operations, the impact of oxygen and gas is a very important safety and health issue. Miners need enough oxygen to maintain normal metabolism. If the oxygen concentration is lower than normal, it will cause hypoxia. Gas mainly refers to methane (CH4), which is common in underground mines such as coal mines. Methane is a flammable gas. When the concentration reaches 5% to 15%, it will cause an explosion when it encounters a fire source, posing a great threat to the life safety of miners.

[0003] Existing underground mines often use a set of prescribed systems to regulate the supply of fresh air. However, if there are not many people in the underground mine, not so much oxygen is needed. If too much fresh air is continuously supplied, the operating cost of the coal mine will increase. Therefore, it is necessary to design an analysis method of a gas analysis instrument that can be adjusted in real time. Summary of the invention

[0004] The object of the present invention is to provide an analysis method for a gas analysis instrument to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an analysis method for a gas analysis instrument, comprising an information measurement module, a gas reciprocating module, and a concentration adjustment module. The information measurement module is used to monitor the working environment of an underground mine in real time, obtain various characteristic parameters, and transmit the information to the concentration adjustment module. The gas reciprocating module is used to reduce the concentration of harmful gases by circulating fresh air to prevent accidents in underground mines due to high concentrations of harmful gases. The concentration adjustment module is used to adjust the concentration of harmful gases to ensure that the underground mine maintains a suitable concentration range during operation.

[0006] According to the above technical solution, the information measurement module includes a personnel counting module, an oxygen concentration detection module, a gas concentration detection module, a timing module, and an information transceiver module. The personnel counting module, the oxygen concentration detection module, and the gas concentration detection module are all electrically connected to the timing module and the information transceiver module. The personnel counting module is used to detect the number of personnel according to the number of personnel and work intensity in the underground mine. The oxygen concentration detection module is installed in the mine tunnel of the underground mine to detect the concentration of fresh air. The gas concentration detection module is installed in the mine tunnel of the underground mine to detect the concentration of gas in the exhaust gas of the underground mine. The timing module is used to count the interval time of each measurement, and the information transceiver module is used to convert and transmit the signal to the concentration adjustment module;

[0007] The gas round-trip module includes an oxygen generator, a fresh air pump, and a fresh air pipeline. The oxygen generator is located in the fresh air pipeline and is used to adjust the concentration of oxygen in the fresh air pipeline and then adjust the concentration of oxygen in the mine tunnel. The fresh air pump is used to pump oxygen between the mine tunnel and the mine shaft. The fresh air pipeline is used to transport oxygen to realize supply circulation.

[0008] The concentration adjustment module includes a fresh air concentration calculation module, a database, and a ratio change module. The fresh air concentration calculation module is electrically connected to the oxygen concentration detection module. The fresh air concentration calculation module and the oxygen generator are electrically connected to the fresh air concentration calculation module. The fresh air concentration calculation module is used to calculate the most suitable fresh air concentration at present. The database is used to store various information measured each time. The ratio change module is used to adjust the ratio of parameters related to fresh air concentration according to the number of personnel in the underground mine.

[0009] According to the above technical solution, the working method of the system includes:

[0010] S1. When the underground mine is in operation, the gas concentration in the mine tunnel of the underground mine is detected, and the fresh air concentration in the fresh air pipeline is detected, and the current number of personnel in the underground mine is detected;

[0011] S2. Calculate the most suitable fresh air concentration at present, and adjust the power of the oxygen generator according to the calculated value and the measured value, so as to adjust the concentration of the fresh air;

[0012] S3. After the fresh air is adjusted, the underground mine continues to operate for a period of time to measure whether the personnel experience hypoxia. If not, various information is tested at fixed intervals. If hypoxia occurs, manual intervention is performed to stop the operation of the underground mine and reset the parameters related to the appropriate fresh air concentration.

[0013] According to the above technical solution, in S1, the oxygen concentration detection module completes the oxygen concentration measurement in the fresh air duct, divides the fresh air duct into several measurement positions, and detects the oxygen concentration at 3 to W positions of the fresh air duct. Each concentration sensor measures 3 to W groups of information each time, and the concentration measurement value Gx is obtained after averaging, wherein the size of W is specifically determined according to the actual situation of the underground mine.

[0014] According to the above technical solution, the information of the concentration measurement value Gx is analyzed to obtain a stable value;

[0015]

[0016] Where Tzn is the effective value of the nth adjustment, Gx is the xth measurement value of the nth adjustment, MAX() and MIN() are the maximum and minimum values ​​in the measurement information queue of the measurement position, which are discarded. After Tzn is obtained, the oxygen concentration is guided by it and the concentration is increased or decreased on this basis.

[0017] According to the above technical solution, in the above step S2, the calculation of the appropriate fresh air concentration needs to be based on the following factors:

[0018] During the first adjustment, the suitable fresh air concentration is positively correlated with the original fresh air concentration and gas concentration; when calculating the suitable fresh air concentration in subsequent adjustments, the gas concentration in the mine after the last adjustment is recorded and compared with the gas concentration in the mine after the second to last adjustment. If it tends to decrease, the suitable fresh air concentration will not be changed; if it tends to increase, the suitable fresh air concentration will be further adjusted according to the proportion of the increase.

[0019] According to the above technical solution, in the above step S2, the appropriate fresh air concentration G n The calculation formula is:

[0020] When Q n ≤Q n-1 When G n =G n-1 ;

[0021] When Q n >Q n-1 hour,

[0022] Among them G n-1 is the suitable fresh air concentration obtained after the penultimate adjustment, Q n is the gas concentration measured at the last adjustment, Q n-1 is the gas concentration measured at the penultimate adjustment, k is the weight parameter considered when calculating the appropriate fresh air concentration, and p is the weight parameter considered when calculating the appropriate fresh air concentration for the changing trend of the gas concentration.

[0023] According to the above technical solution, in the above S2, the functional relationship between k and p is: And k+p=c, where P0 is the standard number of people operating in an underground mine, P n is the real-time number of people operating in the underground mine at the time of the last adjustment, and c is a constant value determined by personnel in this field based on actual conditions.

[0024] Personnel counting module: real-time monitoring of the number of personnel in the underground mine. This module evaluates the demand for oxygen based on the number of personnel and work intensity. Oxygen concentration detection module: installed in the mine tunnel to detect the current oxygen concentration in the air. When the oxygen concentration is lower than the safety standard, an alarm will be sounded. Gas concentration detection module: also installed in the mine tunnel to monitor the gas concentration to prevent gas leakage. When the gas concentration is too high, safety measures will be triggered. Timing module: responsible for recording the time interval between each measurement for timed monitoring and data statistics. Information transceiver module: summarizes the measurement results and alarm information of each module and transmits them to the downstream concentration adjustment module. This module is also responsible for receiving adjustment instructions from the concentration adjustment module. Oxygen generator in the gas round-trip module: located in the fresh air pipeline, it can adjust the oxygen concentration in the fresh air pipeline, thereby affecting the oxygen concentration in the mine tunnel. Fresh air pump: pumps oxygen to form a gas flow between the mine tunnel and the mine to ensure the supply of oxygen. Fresh air pipeline: used to transport oxygen and form a supply cycle to ensure that the air quality in the mine tunnel remains within a safe range.

[0025] Fresh air concentration calculation module: electrically connected to the oxygen concentration detection module, calculates the most suitable oxygen concentration based on real-time monitoring data, and gives adjustment suggestions. Database: stores each measurement result and related information, and can trace and analyze past data to facilitate trend analysis and improvement measures. Ratio change module: adjusts the relevant parameters of fresh air concentration according to the actual number of people and needs, and optimizes the gas concentration automatically or manually.

[0026] Workflow

[0027] 1. Monitoring: The system regularly monitors the number of personnel, oxygen concentration and gas concentration through various measurement modules.

[0028] 2. Data analysis: Record the time intervals and collected data through the timing module and upload them to the concentration adjustment module.

[0029] 3. Calculation and adjustment: The concentration adjustment module processes this data, calculates the required oxygen concentration and makes the necessary adjustments through the ratio change module.

[0030] 4. Gas regulation: According to the calculation results, the oxygen generator and fresh air pump will start working to adjust the oxygen concentration in the mine to ensure the safety and health of personnel.

[0031] 5. Information feedback: The system continuously monitors and adjusts, and promptly feeds back information to monitoring personnel so that they can make appropriate decisions and countermeasures.

[0032] Through this comprehensive control and detection system, the safety of underground mines can be effectively ensured and the risk of accidents can be reduced.

[0033] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention measures the gas concentration and adjusts the most suitable concentration of fresh air based on the number of operating personnel in the underground mine, thereby effectively reducing the accumulation of gas. At the same time, it also avoids the problem of unstable concentration in the underground mine caused by too low fresh air concentration, and balances the relationship between various performances as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 It is a schematic diagram of the overall module structure of the present invention. DETAILED DESCRIPTION

[0036] 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.

[0037] See also Figure 1 , the present invention provides a technical solution: an analysis method of a gas analysis instrument, comprising an information measurement module, a gas round-trip module, and a concentration adjustment module, wherein the information measurement module is used to monitor the working environment of an underground mine in real time, obtain various characteristic parameters, and transmit the information to the concentration adjustment module, the gas round-trip module is used to reduce the concentration of harmful gases by circulating fresh air to prevent accidents in underground mines due to high concentrations of harmful gases, and the concentration adjustment module is used to adjust the concentration of harmful gases to ensure that the underground mine maintains a suitable concentration range during operation;

[0038] The information measurement module includes a personnel counting module, an oxygen concentration detection module, a gas concentration detection module, a timing module, and an information transceiver module. The personnel counting module, the oxygen concentration detection module, and the gas concentration detection module are all electrically connected to the timing module and the information transceiver module. The personnel counting module is used to detect the number of personnel according to the number of personnel and work intensity in the underground mine. The oxygen concentration detection module is installed in the mine tunnel of the underground mine and is used to detect the concentration of fresh air. The gas concentration detection module is installed in the mine tunnel of the underground mine and is used to detect the concentration of gas in the exhaust gas of the underground mine. The timing module is used to count the interval time of each measurement. The information transceiver module is used to convert and transmit the signal to the concentration adjustment module;

[0039] The gas round-trip module includes an oxygen generator, a fresh air pump, and a fresh air pipeline. The oxygen generator is located in the fresh air pipeline and is used to adjust the concentration of oxygen in the fresh air pipeline and then adjust the concentration of oxygen in the mine tunnel. The fresh air pump is used to pump oxygen between the mine tunnel and the mine shaft. The fresh air pipeline is used to transport oxygen to realize the supply cycle.

[0040] The concentration adjustment module includes a fresh air concentration calculation module, a database, and a ratio change module. The fresh air concentration calculation module is electrically connected to the oxygen concentration detection module. The fresh air concentration calculation module and the oxygen generator are electrically connected to the fresh air concentration calculation module. The fresh air concentration calculation module is used to calculate the most suitable fresh air concentration at present. The database is used to store various information measured each time. The ratio change module is used to adjust the ratio of parameters related to fresh air concentration according to the number of personnel in the underground mine.

[0041] Personnel counting module: real-time monitoring of the number of personnel in the underground mine. This module evaluates the demand for oxygen based on the number of personnel and work intensity. Oxygen concentration detection module: installed in the mine tunnel to detect the current oxygen concentration in the air. When the oxygen concentration is lower than the safety standard, an alarm will be sounded. Gas concentration detection module: also installed in the mine tunnel to monitor the gas concentration to prevent gas leakage. When the gas concentration is too high, safety measures will be triggered. Timing module: responsible for recording the time interval between each measurement for timed monitoring and data statistics. Information transceiver module: summarizes the measurement results and alarm information of each module and transmits them to the downstream concentration adjustment module. This module is also responsible for receiving adjustment instructions from the concentration adjustment module. Oxygen generator in the gas round-trip module: located in the fresh air pipeline, it can adjust the oxygen concentration in the fresh air pipeline, thereby affecting the oxygen concentration in the mine tunnel. Fresh air pump: pumps oxygen to form a gas flow between the mine tunnel and the mine to ensure the supply of oxygen. Fresh air pipeline: used to transport oxygen and form a supply cycle to ensure that the air quality in the mine tunnel remains within a safe range.

[0042] Fresh air concentration calculation module: electrically connected to the oxygen concentration detection module, calculates the most suitable oxygen concentration based on real-time monitoring data, and gives adjustment suggestions. Database: stores each measurement result and related information, and can trace and analyze past data to facilitate trend analysis and improvement measures. Ratio change module: adjusts the relevant parameters of fresh air concentration according to the actual number of people and needs, and optimizes the gas concentration automatically or manually.

[0043] Workflow

[0044] 1. Monitoring: The system regularly monitors the number of personnel, oxygen concentration and gas concentration through various measurement modules.

[0045] 2. Data analysis: Record the time intervals and collected data through the timing module and upload them to the concentration adjustment module.

[0046] 3. Calculation and adjustment: The concentration adjustment module processes this data, calculates the required oxygen concentration and makes the necessary adjustments through the ratio change module.

[0047] 4. Gas regulation: According to the calculation results, the oxygen generator and fresh air pump will start working to adjust the oxygen concentration in the mine to ensure the safety and health of personnel.

[0048] 5. Information feedback: The system continuously monitors and adjusts, and promptly feeds back information to monitoring personnel so that they can make appropriate decisions and countermeasures.

[0049] Through this comprehensive control and detection system, the safety of underground mines can be effectively ensured and the risk of accidents can be reduced.

[0050] The system's working methods include:

[0051] S1. When the underground mine is in operation, the gas concentration in the mine tunnel of the underground mine is detected, and the fresh air concentration in the fresh air pipeline is detected, and the current number of personnel in the underground mine is detected;

[0052] S2. Calculate the most suitable fresh air concentration at present, and adjust the power of the oxygen generator according to the calculated value and the measured value, so as to adjust the concentration of the fresh air;

[0053] S3. After the fresh air is adjusted, the underground mine continues to operate for a period of time to measure whether the personnel experience hypoxia. If not, various information tests are performed at fixed intervals. If hypoxia occurs, manual intervention is performed to stop the underground mine operation and reset the parameters related to the appropriate fresh air concentration.

[0054] In S1, the oxygen concentration detection module completes the oxygen concentration measurement in the fresh air pipeline, divides the fresh air pipeline into several measurement positions, detects the oxygen concentration at 3 to W positions of the fresh air pipeline, and each concentration sensor measures 3 to W groups of information each time, and the concentration measurement value Gx is obtained after averaging, where the value of W is specifically determined according to the actual situation of the underground mine;

[0055] Analyze the information of the concentration measurement value Gx to obtain a stable value;

[0056]

[0057] Where Tzn is the effective value of the nth adjustment, Gx is the xth measurement value of the nth adjustment, MAX() and MIN() are the maximum and minimum values ​​in the measurement information queue of the measurement position, respectively, which are discarded. After Tzn is obtained, the oxygen concentration is guided by it and the concentration is increased or decreased on this basis;

[0058] In step S2, the calculation of the appropriate fresh air concentration needs to be based on the following factors:

[0059] During the first adjustment, the suitable fresh air concentration is positively correlated with the original fresh air concentration and gas concentration; during the subsequent adjustment of the calculation of the suitable fresh air concentration, the gas concentration in the mine after the last adjustment is recorded and compared with the gas concentration in the mine after the penultimate adjustment. If it tends to decrease, the suitable fresh air concentration will not be changed; if it tends to increase, the suitable fresh air concentration will be further adjusted according to the increase ratio;

[0060] In step S2, the appropriate fresh air concentration G n The calculation formula is:

[0061] When Q n ≤Q n-1 When G n =G n-1 ;

[0062] When Q n >Q n-1 hour,

[0063] Among them G n-1 is the suitable fresh air concentration obtained after the penultimate adjustment, Q n is the gas concentration measured at the last adjustment, Q n-1 is the gas concentration measured during the penultimate adjustment, k is the weight parameter of gas concentration when calculating the appropriate fresh air concentration, and p is the weight parameter of gas concentration change trend when calculating the appropriate fresh air concentration;

[0064] In S2, the functional relationship between k and p is: And k+p=c, where P0 is the standard number of people operating in an underground mine, P n is the real-time number of people operating in the underground mine at the time of the last adjustment, and c is a constant value determined by personnel in this field based on actual conditions.

[0065] The present invention measures the gas concentration and adjusts the most suitable concentration of fresh air based on the number of operators in the underground mine, thereby effectively reducing the accumulation of gas. At the same time, it also avoids the problem of unstable concentration in the underground mine caused by too low fresh air concentration, and balances the relationship between various performances as much as possible.

[0066] By monitoring the gas concentration in real time and adjusting the concentration of fresh air according to the number of operators and activities in the underground mine, the cumulative risk of gas can be effectively reduced. The appropriate oxygen concentration can support the life activities of miners while ensuring that the gas concentration is maintained within a safe range, thereby reducing the probability of accidents; with the help of advanced gas monitoring technology, data on gas and oxygen concentrations in the mine can be obtained in real time. These data provide a basis for adjusting the ventilation system, which can achieve precise ventilation, avoid energy waste and operational errors, and by reasonably adjusting the concentration of fresh air, the work efficiency and resource utilization of the mine can be maximized while ensuring the safety and health of miners. This balance helps to achieve a win-win situation for economic benefits and safety management.

[0067] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0068] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An analysis method for a gas analysis instrument, characterized in that: The method adopts an analysis system, which includes an information measurement module, a gas reciprocating module, and a concentration adjustment module. The information measurement module is used to monitor the working environment of the underground mine in real time, obtain various characteristic parameters, and transmit the information to the concentration adjustment module. The gas reciprocating module is used to reduce the concentration of harmful gases by circulating fresh air to prevent accidents in the underground mine due to high concentrations of harmful gases. The concentration adjustment module is used to adjust the concentration of harmful gases to ensure that the underground mine maintains a suitable concentration range when working.

2. The analysis method of a gas analysis instrument according to claim 1, characterized in that: The information measurement module includes a personnel counting module, an oxygen concentration detection module, a gas concentration detection module, a timing module, and an information transceiver module. The personnel counting module, the oxygen concentration detection module, and the gas concentration detection module are all electrically connected to the timing module and the information transceiver module. The personnel counting module is used to detect the number of personnel according to the number of personnel and work intensity in the underground mine. The oxygen concentration detection module is installed in the mine tunnel of the underground mine to detect the concentration of fresh air. The gas concentration detection module is installed in the mine tunnel of the underground mine to detect the concentration of gas in the exhaust gas of the underground mine. The timing module is used to count the interval time of each measurement. The information transceiver module is used to convert and transmit the signal to the concentration adjustment module; The gas round-trip module includes an oxygen generator, a fresh air pump, and a fresh air pipeline. The oxygen generator is located in the fresh air pipeline and is used to adjust the concentration of oxygen in the fresh air pipeline and then adjust the concentration of oxygen in the mine tunnel. The fresh air pump is used to pump oxygen between the mine tunnel and the mine shaft. The fresh air pipeline is used to transport oxygen to realize supply circulation. The concentration adjustment module includes a fresh air concentration calculation module, a database, and a ratio change module. The fresh air concentration calculation module is electrically connected to the oxygen concentration detection module. The fresh air concentration calculation module and the oxygen generator are electrically connected to the fresh air concentration calculation module. The fresh air concentration calculation module is used to calculate the most suitable fresh air concentration at present. The database is used to store various information measured each time. The ratio change module is used to adjust the ratio of parameters related to fresh air concentration according to the number of personnel in the underground mine.

3. The analysis method of a gas analysis instrument according to claim 2, characterized in that: The working method of the system includes: S1. When the underground mine is in operation, the gas concentration in the mine tunnel of the underground mine is detected, and the fresh air concentration in the fresh air pipeline is detected, and the current number of personnel in the underground mine is detected; S2. Calculate the most suitable fresh air concentration at present, and adjust the power of the oxygen generator according to the calculated value and the measured value, so as to adjust the concentration of the fresh air; S3. After the fresh air is adjusted, the underground mine continues to operate for a period of time to measure whether the personnel experience hypoxia. If not, various information is tested at fixed intervals. If hypoxia occurs, manual intervention is performed to stop the operation of the underground mine and reset the parameters related to the appropriate fresh air concentration.

4. The analysis method of a gas analysis instrument according to claim 3, characterized in that: In S1, the oxygen concentration detection module completes the oxygen concentration measurement in the fresh air duct, divides the fresh air duct into several measurement positions, and detects the oxygen concentration at 3 to W positions of the fresh air duct. Each concentration sensor measures 3 to W groups of information each time, and the concentration measurement value Gx is obtained after averaging, where the size of W is specifically determined according to the actual situation of the underground mine.

5. The analysis method of a gas analysis instrument according to claim 4, characterized in that: Analyze the information of the concentration measurement value Gx to obtain a stable value; Where Tzn is the effective value of the nth adjustment, Gx is the xth measurement value of the nth adjustment, MAX() and MIN() are the maximum and minimum values ​​in the measurement information queue of the measurement position, which are discarded. After Tzn is obtained, the oxygen concentration is guided by it and the concentration is increased or decreased on this basis.

6. The analysis method of a gas analysis instrument according to claim 5, characterized in that: In the above step S2, the calculation of the appropriate fresh air concentration needs to be based on the following factors: During the first adjustment, the suitable fresh air concentration is positively correlated with the original fresh air concentration and gas concentration; when calculating the suitable fresh air concentration in subsequent adjustments, the gas concentration in the mine after the last adjustment is recorded and compared with the gas concentration in the mine after the second to last adjustment. If it tends to decrease, the suitable fresh air concentration will not be changed; if it tends to increase, the suitable fresh air concentration will be further adjusted according to the proportion of the increase.

7. The analysis method of a gas analysis instrument according to claim 6, characterized in that: In the above step S2, the appropriate fresh air concentration G n The calculation formula is: When Q n ≤Q n-1 When G n =G n-1 ; Among them G n-1 is the suitable fresh air concentration obtained after the penultimate adjustment, Q n is the gas concentration measured at the last adjustment, Q n-1 is the gas concentration measured at the penultimate adjustment, k is the weight parameter considered when calculating the appropriate fresh air concentration, and p is the weight parameter considered when calculating the appropriate fresh air concentration for the changing trend of the gas concentration.

8. The analysis method of a gas analysis instrument according to claim 7, characterized in that: In the above S2, the functional relationship between k and p is: And k+p=c, where P0 is the standard number of people operating in an underground mine, P n is the real-time number of people operating in the underground mine at the time of the last adjustment, and c is a constant value determined by personnel in this field based on actual conditions.

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