A method, device, equipment and medium for determining fault of a gas monitoring device

Abstract

The present invention discloses a method, device, equipment and medium for determining a fault of a gas monitoring device. The method comprises: using a preset monitoring device to determine the measured concentration of each gas type in a first preset gas type set in a mixed gas to be tested generated by the combustion of a preset fuel; determining the fuel coefficient of the preset fuel, and using the correlation between the fuel coefficient and the measured concentration, determining the theoretical concentration of each gas type in a second preset gas type set in the mixed gas to be tested; determining the measurement deviation rate of each gas type in the second preset gas type set based on the measured concentration and the theoretical concentration, and if the measurement deviation rate is greater than a preset threshold, determining that a measurement channel in the preset monitoring device has failed, and correcting the measurement channel. The technical solution of the embodiment of the present invention solves the problem of inaccurate measurement of gas concentration due to inaccurate or untimely fault determination of the gas monitoring device, and ensures the accuracy of the monitored gas concentration.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission monitoring, and in particular to a fault determination method, device, equipment and medium for a gas monitoring device. Background Art

[0002] With the implementation of the country's dual carbon strategy, thermal power plants have added monitoring of greenhouse gas carbon dioxide and carbon monoxide concentrations on the basis of monitoring nitrogen oxides, sulfur dioxide and oxygen concentrations. These data are not only the basis for evaluating the operating economy of thermal power plants, but also the basis for emission charges and trading of emission rights.

[0003] At present, infrared measurement or electrochemical measurement is usually used to detect gas concentration and emission. The measurement principle of infrared measurement can be understood as using infrared rays to analyze gas, that is, based on the different concentrations of the gas to be measured, the absorbed radiation energy is different, the radiation energy causes the temperature in the detector to rise by different amounts, and the pressure on both sides of the moving film is different, which can generate corresponding electrical signals of the capacitance detector, thereby indirectly measuring the concentration of the gas contained in the gas to be measured. The measurement principle of electrochemical measurement can be understood as that the gas to be measured is input into the sensor chamber after dust removal and dehumidification, and then enters the electrolytic cell through the permeable membrane, so that the gas diffused and absorbed in the electrolyte is electrolyzed at the specified oxidation potential, and the concentration of the gas can be calculated based on the consumed electrolysis current.

[0004] However, after running for a period of time, measuring instruments are prone to problems such as instrument drift. Usually, manual regular calibration is used to calibrate the measuring instruments, but small instrument offsets may be ignored and the instrument may not be calibrated in time, thus affecting the accuracy of the measured concentrations of gases such as carbon dioxide, oxygen and carbon monoxide. Summary of the invention

[0005] The present invention provides a method, device, equipment and medium for determining a fault of a gas monitoring device, so as to solve the problem of inaccurate measurement of gas concentration caused by inaccurate or untimely determination of a fault of the gas monitoring device.

[0006] In a first aspect, an embodiment of the present invention provides a method for determining a fault of a gas monitoring device, comprising:

[0007] Determine, by using a preset monitoring device, the measured concentration of each gas type in a first preset gas type set in a mixed gas to be tested generated by combustion of a preset fuel, wherein the first preset gas type set includes at least three gas types;

[0008] Determine a fuel coefficient of the preset fuel, and determine a theoretical concentration of each gas type in a second preset gas type set in the mixed gas to be measured by using a correlation between the fuel coefficient and the measured concentration, wherein the second preset gas type set is a subset of the first preset gas type set;

[0009] Based on the measured concentration and the theoretical concentration, the measurement deviation rate of each gas type in the second preset gas type set is determined. If the measurement deviation rate is greater than a preset threshold, it is determined that a measurement channel in the preset monitoring device has failed, and the measurement channel is calibrated, wherein the measurement channel is used to determine the measured concentration.

[0010] In a second aspect, an embodiment of the present invention provides a fault determination device for a gas monitoring device, comprising:

[0011] A measurement concentration determination module, used to determine the measurement concentration of each gas type in a first preset gas type set in a mixed gas to be measured generated by combustion of a preset fuel using a preset monitoring device, wherein the first preset gas type set includes at least three gas types;

[0012] a theoretical concentration determination module, configured to determine a fuel coefficient of the preset fuel, and determine a theoretical concentration of each gas type in a second preset gas type set in the mixed gas to be measured by using a correlation between the fuel coefficient and the measured concentration, wherein the second preset gas type set is a subset of the first preset gas type set;

[0013] A fault determination and processing module is used to determine the measurement deviation rate of each gas type in the second preset gas type set based on the measured concentration and the theoretical concentration. If the measurement deviation rate is greater than a preset threshold, it is determined that a measurement channel in the preset monitoring device has a fault, and the measurement channel is calibrated, wherein the measurement channel is used to determine the measured concentration.

[0014] In a third aspect, an embodiment of the present invention provides an electronic device, the electronic device comprising:

[0015] at least one processor;

[0016] and a memory communicatively coupled to the at least one processor;

[0017] The memory stores a computer program executable by at least one processor, and the computer program is executed by at least one processor so that the at least one processor can execute the fault determination method of the gas monitoring device of the first aspect.

[0018] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium storing computer instructions, which are used to implement the fault determination method of the gas monitoring device of the first aspect when executed by a processor.

[0019] The fault determination scheme of the gas monitoring device provided in the embodiment of the present invention uses a preset monitoring device to determine the measured concentration of each gas type in a first preset gas type set in the mixed gas to be tested generated by combustion of a preset fuel in the mixed gas to be tested, wherein the first preset gas type set includes at least three gas types, determines the fuel coefficient of the preset fuel, and uses the correlation between the fuel coefficient and the measured concentration to determine the theoretical concentration of each gas type in a second preset gas type set in the mixed gas to be tested, wherein the second preset gas type set is a subset of the first preset gas type set, and determines the measurement deviation rate of each gas type in the second preset gas type set based on the measured concentration and the theoretical concentration. If the measurement deviation rate is greater than a preset threshold, it is determined that a measurement channel in the preset monitoring device has failed, and the measurement channel is calibrated, wherein the measurement channel is used to determine the measured concentration. By adopting the above technical scheme, the preset monitoring device is first used to determine the measured concentration of each gas type in the first preset gas type set in the mixed gas to be measured, and then the fuel coefficient is calculated, and the correlation between the fuel coefficient and the measured concentration is used to determine the theoretical concentration of each gas type in the second preset gas type set, and then the measurement deviation rate is determined based on the measured concentration and the theoretical concentration. If the measurement deviation rate is greater than the preset threshold, it is determined that the measurement channel in the preset monitoring device has a fault, and the measurement channel is calibrated. By calculating the measurement deviation rate of the gas concentration, it can be accurately determined whether the detected gas concentration is correct. When it is determined to be inaccurate, the monitoring device can be calibrated in time, which solves the problem of inaccurate measurement of gas concentration caused by inaccurate or untimely determination of the fault of the gas monitoring device, thereby ensuring the accuracy of the monitored gas concentration.

[0020] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a flow chart of a method for determining a fault of a gas monitoring device provided in accordance with Embodiment 1 of the present invention;

[0023] Figure 2 is a flow chart of a method for determining a fault of a gas monitoring device provided in accordance with a second embodiment of the present invention;

[0024] Figure 3 is a flow chart of a method for determining a fault of a gas monitoring device provided in accordance with Embodiment 3 of the present invention;

[0025] Figure 4 is a schematic structural diagram of a fault determination device for a gas monitoring device provided in accordance with a fourth embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of an electronic device provided according to Embodiment 5 of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In the description of the present invention, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are an "or" relationship. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] Embodiment 1

[0030] Figure 1 A flowchart of a method for determining a fault of a gas monitoring device is provided for the first embodiment of the present invention. This embodiment is applicable to situations where a fault of a gas monitoring device is determined. The method can be executed by a fault determination device of the gas monitoring device. The fault determination device of the gas monitoring device can be implemented in the form of hardware and / or software. The fault determination device of the gas monitoring device can be configured in an electronic device. The electronic device can be composed of two or more physical entities or one physical entity.

[0031] like Figure 1 As shown, the first embodiment of the present invention provides a method for determining a fault of a gas monitoring device, which specifically includes the following steps:

[0032] S101. Determine, using a preset monitoring device, the measured concentration of each gas type in a first preset gas type set in a mixed gas to be tested generated by combustion of a preset fuel, wherein the first preset gas type set includes at least three gas types.

[0033] In this embodiment, the preset monitoring device generally refers to a monitoring device for the flue gas components generated by the combustion of a preset fuel, such as a monitoring device for the flue gas generated by the combustion of coal. The device can continuously extract flue gas from the outlet chimney of the boiler of a thermal power plant. The flue gas is a mixture of smoke and mixed gas, and the mixed gas is the mixed gas to be tested. The preset monitoring device can detect the concentration of each gas in the multiple gases contained in the flue gas. Among them, in the actual production process, the flue gas mainly contains gases such as oxygen, carbon dioxide, carbon monoxide, sulfur dioxide and nitrogen monoxide. The gas types contained in the first preset gas type set can be oxygen, carbon dioxide, carbon monoxide and sulfur dioxide, that is, the number of gas types contained in the first preset gas type set can be equal to or less than the gas types actually contained in the flue gas, but at least three types must be included, and these three types can be the three gases with the highest content in the flue gas.

[0034] S102. Determine the fuel coefficient of the preset fuel, and use the correlation between the fuel coefficient and the measured concentration to determine the theoretical concentration of each gas type in a second preset gas type set in the mixed gas to be measured, wherein the second preset gas type set is a subset of the first preset gas type set.

[0035] In this embodiment, the industrial analysis components of the preset fuel, such as the coal fed into the furnace, such as the moisture, ash and volatile matter in the coal, can be determined first, and then the fuel coefficient can be calculated based on the industrial analysis components, and then the theoretical concentration of each gas type in the second preset gas type set can be calculated based on the correlation between the fuel coefficient, the measured concentration and the theoretical concentration. When the fuel coefficient and the measured concentration are known, the theoretical concentration can be calculated. Among them, the gas types included in the second preset gas type set exist in the first preset gas type set, but the number of gas types included in the second preset gas type set is less than the number of gas types included in the first preset gas type set.

[0036] S103. Determine the measurement deviation rate of each gas type in the second preset gas type set based on the measured concentration and the theoretical concentration. If the measurement deviation rate is greater than a preset threshold, determine that a measurement channel in the preset monitoring device has failed, and calibrate the measurement channel, wherein the measurement channel is used to determine the measured concentration.

[0037] In this embodiment, the measurement deviation rate of each gas type in the second preset gas type set can be calculated based on the obtained measured concentration and theoretical concentration, such as calculating the percentage of the deviation between the theoretical concentration and the measured concentration in the measured concentration. If the measurement deviation rate of a gas in the second preset gas type set is greater than a preset threshold, such as the measurement deviation rate of oxygen in the second preset gas type set is greater than 5%, it can be determined that the measurement channel of the preset gas, such as oxygen and / or carbon monoxide, in the preset monitoring device is faulty, and then the measurement channel is calibrated. Among them, the function of the measurement channel can be understood as measuring and determining the measured concentration of the gas in the flue gas.

[0038] The method for determining the fault of a gas monitoring device provided in an embodiment of the present invention first uses a preset monitoring device to determine the measured concentration of each gas type in a first preset gas type set in the mixed gas to be tested, then calculates the fuel coefficient, and uses the correlation between the fuel coefficient and the measured concentration to determine the theoretical concentration of each gas type in a second preset gas type set, and then determines the measurement deviation rate based on the measured concentration and the theoretical concentration. If the measurement deviation rate is greater than a preset threshold, it is determined that a measurement channel in the preset monitoring device has a fault, and the measurement channel is corrected. The technical solution of the embodiment of the present invention can accurately determine whether the detected gas concentration is correct by calculating the measurement deviation rate of the gas concentration. When it is determined to be inaccurate, the monitoring device can be corrected in time, which solves the problem of inaccurate measurement of gas concentration caused by inaccurate or untimely determination of the fault of the gas monitoring device, and ensures the accuracy of the monitored gas concentration.

[0039] Embodiment 2

[0040] Figure 2 This is a flow chart of a method for determining a fault of a gas monitoring device provided in Embodiment 2 of the present invention. The technical solution of the embodiment of the present invention is further optimized on the basis of the above-mentioned optional technical solutions, and provides a specific method for determining the fault of the gas monitoring device.

[0041] Optionally, the determination of the fuel coefficient of the preset fuel includes: determining the conversion coefficient, dry ash-free carbon, dry ash-free hydrogen and dry ash-free nitrogen according to the first received basis, dry ash-free fixed carbon and dry ash-free volatile matter of the preset fuel, wherein the first received basis includes received basis moisture and received basis ash; determining received basis oxygen and received basis according to the conversion coefficient, the dry ash-free carbon, the dry ash-free hydrogen, the dry ash-free nitrogen and the second received basis, wherein the second received basis includes received basis sulfur, the received basis ash and the received basis moisture, and the received basis includes received basis carbon, received basis hydrogen and received basis nitrogen; determining the fuel coefficient of the preset fuel according to the received basis oxygen and the received basis. The advantage of such a setting is that the fuel coefficient of the preset fuel can be accurately calculated, thereby ensuring the accuracy of the theoretical concentration.

[0042] Optionally, the use of the correlation between the fuel coefficient and the measured concentration to determine the theoretical concentration of each gas type in the second preset gas type set in the mixed gas to be measured includes: if the measured concentration of carbon monoxide in the first preset gas is zero, then determining the first sum of the measured concentration of carbon dioxide and the measured concentration of sulfur dioxide in the first preset gas, and the second sum of the preset value and the fuel coefficient; determining the first difference between the preset coefficient and the product of the first sum and the second sum, and determining the first difference as the first theoretical concentration of oxygen, wherein the oxygen belongs to the second preset gas type set. The advantage of this setting is that the theoretical concentration of oxygen is accurately determined, ensuring the accuracy of the measurement deviation rate.

[0043] Optionally, the method of determining the theoretical concentration of each gas type in the second preset gas type set in the mixed gas to be tested by using the correlation between the fuel coefficient and the measured concentration further includes: if the measured concentration of carbon monoxide in the first preset gas is greater than zero, then determining the second theoretical concentration of oxygen, the third sum of the measured concentration of carbon dioxide and the measured concentration of sulfur dioxide in the first preset gas, the fourth sum of the preset value and the fuel coefficient, and the product of the third sum and the fourth sum, wherein the determination method of the second theoretical concentration is consistent with the determination method of the first theoretical concentration; determining the preset coefficient, the second difference between the sum of the product value and the measured concentration of oxygen in the first preset gas, and determining the quotient of the second difference and the preset sum, and determining the quotient as the theoretical concentration of carbon monoxide, wherein the carbon monoxide also belongs to the second preset gas type set, and the preset sum is the sum of the fuel coefficient and the preset empirical value. The advantage of such a setting is that not only the theoretical concentration of oxygen is calculated, but also the theoretical concentration of carbon monoxide is determined when the measured concentration of carbon monoxide is not zero, thereby increasing the judgment range of whether the gas channel is faulty.

[0044] like Figure 2 As shown, a method for determining a fault of a gas monitoring device provided in Embodiment 2 of the present invention specifically includes the following steps:

[0045] S201. Determine, by using a preset monitoring device, the measured concentration of each gas type in a first preset gas type set in a mixed gas to be tested generated by combustion of a preset fuel.

[0046] S202. Determine the conversion coefficient, dry ash-free carbon, dry ash-free hydrogen and dry ash-free nitrogen according to the first received basis, dry ash-free fixed carbon and dry ash-free volatile matter of the preset fuel.

[0047] Among them, the first received basis includes received basis moisture and received basis ash.

[0048] Exemplarily, the conversion coefficient K can be determined by:

[0049]

[0050] Among them, M ar To receive the base moisture, A ar To receive the ash content, dry ash-free carbon C daf The determination method can be C daf =FC daf +0.9*(V daf -14), among which FC daf For dry ash-free fixed carbon, V daf The dry ash-free basis volatile matter, dry ash-free basis hydrogen Hdaf The method for determining

[0051]

[0052] Dry ash-free nitrogen N daf The method for determining

[0053] N daf =2.1-0.012*V daf .

[0054] S203. Determine the received basis oxygen and the received basis according to the conversion coefficient, the dry ash-free basis carbon, the dry ash-free basis hydrogen, the dry ash-free basis nitrogen and the second received basis.

[0055] Among them, the second received basis includes received basis sulfur, received basis ash and received basis moisture, and the received basis includes received basis carbon, received basis hydrogen and received basis nitrogen.

[0056] For example, the received carbon C ar The determination method can be C ar =K*C daf , received radical hydrogen H ar The determination method can be H ar =K*H daf , received nitrogen radical N ar The determination method can be N ar =K*N daf , received radical oxygen O ar The determination method can be O ar =100-C ar -H ar -S ar -M ar -A ar Among them, S ar For the received basis sulfur, the received basis sulfur, the received basis ash and the received basis moisture can be determined by a preset monitoring device.

[0057] S204. Determine the fuel coefficient of the preset fuel according to the received base oxygen and the received base.

[0058] For example, the fuel coefficient C ar The method for determining

[0059]

[0060] The fuel coefficient can be calculated based on the received radical oxygen and received radical obtained above.

[0061] S205 , determining whether the measured concentration of carbon monoxide in the first preset gas is zero, if so, executing step 206 , if not, executing step 208 .

[0062] Specifically, if the measured concentration of carbon monoxide detected by the preset monitoring device is zero, step 206 is executed, otherwise step 208 is executed.

[0063] S206: Determine a first sum of the measured concentration of carbon dioxide and the measured concentration of sulfur dioxide in the first preset gas, and a second sum of the preset value and the fuel coefficient.

[0064] For example, if the preset value is 1, the measured concentration of carbon dioxide is The measured concentration of sulfur dioxide is The first sum The second sum ρ 2 =1+β.

[0065] S207 , determining a first difference between the preset coefficient and the first product value, determining the first difference as a first theoretical concentration of oxygen, and executing step 210 .

[0066] Among them, oxygen belongs to the second preset gas type set, and the first product value is the product value of the first sum value and the second sum value.

[0067] For example, if the preset coefficient is 21, as described in the above example, the first theoretical concentration O 2,js1 O 2,js1 =21-ρ 1 *ρ 2 , where ρ 1 *ρ 2 is the first product value.

[0068] S208, determining a second theoretical concentration of oxygen, a third sum of the measured concentrations of carbon dioxide and sulfur dioxide in the first preset gas, a fourth sum of the preset value and the fuel coefficient, and a second product value of the third sum and the fourth sum.

[0069] The second theoretical concentration is determined in the same manner as the first theoretical concentration.

[0070] Specifically, the second theoretical concentration of oxygen may be determined by first determining a first calculated sum of the measured concentration of carbon dioxide and the measured concentration of sulfur dioxide in the first preset gas, and a second calculated sum of the preset value and the fuel coefficient, and then determining a difference between the preset coefficient and the calculated product, and determining the difference as the second theoretical concentration of oxygen. The calculated product is the product of the first calculated sum and the first calculated sum.

[0071] For example, if the measured concentration of carbon monoxide detected by the preset monitoring device is greater than zero, the preset coefficient is 21, then the second theoretical concentration O 2,js2 O 2,js2 =21-ρ′1 *ρ′ 2 , where ρ′ 1 is the sum of the measured concentrations of carbon dioxide and sulfur dioxide when the measured concentration of carbon monoxide is greater than zero, ρ′ 2 When the measured concentration of carbon monoxide is greater than zero, the sum of the preset value and the fuel coefficient, ρ′ 1 Also the third sum, ρ′ 2 This is also the fourth sum value, and the second product value is ρ′ 1 *ρ′ 2 The calculation result of .

[0072] S209, determining a second difference between the preset coefficient and the fifth sum, and determining a quotient of the second difference and the preset sum, and determining the quotient as the theoretical concentration of carbon monoxide.

[0073] Among them, the carbon monoxide also belongs to the second preset gas type set, the preset sum value is the sum of the fuel coefficient and the preset empirical value, and the fifth sum value is the sum of the second product value and the measured concentration of oxygen in the first preset gas.

[0074] For example, if the preset empirical value is 0.65, as described in the above example, the theoretical concentration of carbon monoxide CO js for in, It is the measured concentration of oxygen detected by the preset monitoring device.

[0075] S210. Determine the measurement deviation rate of each gas type in the second preset gas type set based on the measured concentration and the theoretical concentration. If the measurement deviation rate is greater than a preset threshold, determine that a measurement channel in the preset monitoring device fails, and calibrate the measurement channel.

[0076] Specifically, based on the obtained measured concentration and theoretical concentration, the measurement deviation rate of oxygen and / or carbon monoxide can be calculated, such as calculating the percentage of the deviation between the theoretical concentration and the measured concentration in the measured concentration. If the measurement deviation rate is greater than a preset threshold, it can be determined that the measurement channel of the preset gas in the preset monitoring device has failed, and then the measurement channel is calibrated.

[0077] The fault determination method of the gas monitoring device provided by the embodiment of the present invention first uses a preset monitoring device to determine the measured concentration of each gas type in the first preset gas type set in the mixed gas to be tested, and then determines the fuel coefficient of the preset fuel according to the received base oxygen and the received base in the preset fuel, and for the cases where the measured concentration of carbon monoxide is zero and non-zero, uses the correlation between the fuel coefficient and the measured concentration to determine the theoretical concentration of each gas type in the second preset gas type set, and then determines the measurement deviation rate according to the measured concentration and the theoretical concentration. If the measurement deviation rate is greater than a preset threshold, it is determined that the measurement channel in the preset monitoring device has a fault, and the measurement channel is calibrated. The fuel coefficient is accurately determined using the received base oxygen and the received base in the preset fuel, and the theoretical concentration of oxygen and / or carbon monoxide is determined for different situations of the concentration of carbon monoxide (zero and non-zero), thereby realizing the accuracy judgment of the measured concentration of oxygen and carbon monoxide. The corresponding faulty measurement channel can be determined according to the judgment result, solving the problem of inaccurate measurement of gas concentration caused by inaccurate or untimely fault determination of the gas monitoring device, and ensuring the accuracy of the monitored gas concentration.

[0078] Embodiment 3

[0079] Figure 3 This is a flow chart of a method for determining a fault of a gas monitoring device provided in Embodiment 3 of the present invention. The technical solution of the embodiment of the present invention is further optimized on the basis of the above-mentioned optional technical solutions, and provides a specific method for determining a fault of a gas monitoring device.

[0080] Optionally, the first preset gas type set includes oxygen, carbon monoxide, carbon dioxide and sulfur dioxide, wherein the measurement deviation rate of each gas type in the second preset gas type set is determined according to the measured concentration and the theoretical concentration, including: if the measured concentration of carbon monoxide is zero, then the absolute value of the ratio of the difference between the theoretical concentration and the measured concentration of oxygen to the measured concentration of oxygen is determined to obtain the first measurement deviation rate of oxygen, wherein the oxygen belongs to the second preset gas type set; if the measured concentration of carbon monoxide is greater than zero, then the second measurement deviation rate of oxygen is determined, and the absolute value of the ratio of the difference between the theoretical concentration and the measured concentration of carbon monoxide to the measured concentration of carbon monoxide is determined to obtain the measurement deviation rate of carbon monoxide, wherein the determination method of the second measurement deviation rate is consistent with the determination method of the first measurement deviation rate, and the carbon monoxide also belongs to the second preset gas type set. The advantage of such a setting is that the deviation rate between the measured value and the theoretical value of the gas concentration is accurately determined for the two cases where the measured concentration of carbon monoxide is zero and non-zero.

[0081] Optionally, if the measurement deviation rate is greater than a preset threshold, it is determined that the measurement channel in the preset monitoring device is faulty, including: if the measured concentration of carbon monoxide is zero, and the first measurement deviation rate is greater than the first preset threshold, it is determined that at least one of the oxygen measurement channel and the carbon dioxide measurement channel in the preset monitoring device is faulty; if the measured concentration of carbon monoxide is greater than zero, and the measurement deviation rate of carbon monoxide is greater than the second preset threshold, it is determined that at least one of the carbon monoxide measurement channel, the oxygen measurement channel and the carbon dioxide measurement channel in the preset monitoring device is faulty; if the measured concentration of carbon monoxide is greater than zero, the measurement deviation rate of carbon monoxide is greater than the second preset threshold, and the second measurement deviation rate is less than or equal to the second preset threshold, it is determined that the carbon monoxide measurement channel in the preset monitoring device is faulty. The advantage of this setting is that for the two situations where the measured concentration of carbon monoxide is zero and not zero, and the size relationship between the measurement deviation rate and the preset threshold, the gas measurement channel that may have a fault can be accurately judged.

[0082] Optionally, the calibration of the measurement channel includes: if it is determined that at least one of the oxygen measurement channel and the carbon dioxide measurement channel fails, setting calibration of the oxygen measurement channel and the carbon dioxide measurement channel, wherein the setting calibration includes at least zero calibration and range calibration; if it is determined that at least one of the carbon monoxide measurement channel, the oxygen measurement channel and the carbon dioxide measurement channel fails, setting calibration of the carbon monoxide measurement channel, the oxygen measurement channel and the carbon dioxide measurement channel; if it is determined that the carbon monoxide measurement channel fails, setting calibration of the carbon monoxide measurement channel. The advantage of such a setting is that the preset monitoring device can be restored to normal in time by calibrating the gas measurement channel that may fail.

[0083] like Figure 3 As shown, a method for determining a fault of a gas monitoring device provided in Embodiment 3 of the present invention specifically includes the following steps:

[0084] S301. Determine, by using a preset monitoring device, the measured concentration of each gas type in a first preset gas type set in a mixed gas to be tested generated by combustion of a preset fuel.

[0085] S302. Determine the conversion coefficient, dry ash-free carbon, dry ash-free hydrogen and dry ash-free nitrogen according to the first received basis, dry ash-free fixed carbon and dry ash-free volatile matter of the preset fuel.

[0086] S303. Determine the received basis oxygen and the received basis according to the conversion coefficient, the dry ash-free basis carbon, the dry ash-free basis hydrogen, the dry ash-free basis nitrogen and the second received basis.

[0087] S304. Determine the fuel coefficient of the preset fuel according to the received base oxygen and the received base.

[0088] S305 , determining whether the measured concentration of carbon monoxide in the first preset gas is zero, if so, executing step 206 , if not, executing step 308 .

[0089] S306: Determine a first sum of the measured concentration of carbon dioxide and the measured concentration of sulfur dioxide in the first preset gas, and a second sum of the preset value and the fuel coefficient.

[0090] S307 , determining a first difference between the preset coefficient and the first product value, determining the first difference as a first theoretical concentration of oxygen, and executing step 310 .

[0091] S308, determining a second theoretical concentration of oxygen, a third sum of the measured concentrations of carbon dioxide and sulfur dioxide in the first preset gas, a fourth sum of the preset value and the fuel coefficient, and a second product value of the third sum and the fourth sum.

[0092] S309 , determining a second difference between the preset coefficient and the fifth sum value, and determining a quotient of the second difference and the preset sum value, determining the quotient as the theoretical concentration of carbon monoxide, and executing step 311 .

[0093] S310, determine the absolute value of the ratio of the difference between the theoretical concentration of oxygen and the measured concentration of oxygen to the measured concentration of oxygen, obtain a first measurement deviation rate of oxygen, and determine whether the first measurement deviation rate is greater than a first preset threshold value. If so, execute step 312, otherwise end.

[0094] Among them, oxygen belongs to the second preset gas type set, and the first preset gas type set includes oxygen, carbon monoxide, carbon dioxide and sulfur dioxide.

[0095] For example, if the theoretical concentration of oxygen is 4.5%, the measured concentration is 5%, and the first preset threshold is 5%, then the first measurement deviation rate is (4.5%-5%) / 5%, that is, 10%, and it can be concluded that the first measurement deviation rate is greater than the first preset threshold. If the first measurement deviation rate is equal to or less than the first preset threshold, it indicates that the deviation between the theoretical concentration and the measured concentration is small and can be ignored. Among them, the theoretical concentration and measured concentration of the gas can be expressed in the form of percentage, that is, the proportion of the gas content in the total flue gas.

[0096] S311. Determine the second measurement deviation rate of oxygen, and determine the absolute value of the ratio of the difference between the theoretical concentration and the measured concentration of carbon monoxide to the measured concentration of carbon monoxide, to obtain the measurement deviation rate of carbon monoxide, and determine whether the measurement deviation rate of carbon monoxide is greater than the second preset threshold value. If so, execute step 313, otherwise end.

[0097] The second measurement deviation rate is determined in the same manner as the first measurement deviation rate, and carbon monoxide also belongs to the second preset gas type set.

[0098] Specifically, when the measured concentration of carbon monoxide is greater than zero, the second measurement deviation rate of oxygen may be obtained by calculating the absolute value of the ratio of the difference between the theoretical concentration of oxygen and the measured concentration of oxygen to the measured concentration of oxygen, and determining the absolute value as the second measurement deviation rate.

[0099] Exemplarily, the second measurement deviation rate of oxygen can be determined in the manner of the example in step 310. If the second measurement deviation rate of oxygen is 6%, the theoretical concentration of carbon monoxide is 0.017%, the measured concentration is 0.015, and the second preset threshold is 5%, then the measurement deviation rate of carbon monoxide is approximately 13.3%. It can be determined that the measurement deviation rate of carbon monoxide is greater than the second preset threshold. Otherwise, it indicates that the deviation between the theoretical concentration and the measured concentration is small and can be ignored.

[0100] S312: Determine that at least one of the oxygen measurement channel and the carbon dioxide measurement channel in the preset monitoring device fails, and execute step 316.

[0101] Specifically, if the first measurement deviation rate of oxygen is greater than a first preset threshold, it can be determined that a failure occurs in the oxygen measurement channel and / or the carbon dioxide measurement channel.

[0102] S313, determine whether the second measurement deviation rate is less than or equal to the second preset threshold, if so, execute step 314, if not, execute step 315.

[0103] Specifically, as described above, if the second measurement deviation rate of oxygen is 6%, which is greater than the second preset threshold of 5%, it can be determined that the second measurement deviation rate of oxygen is greater than the second preset threshold.

[0104] S314 , determining that a carbon monoxide measurement channel in a preset monitoring device fails, and executing step 317 .

[0105] Specifically, if the second measurement deviation rate of oxygen is less than or equal to the second preset threshold, it can be determined that the carbon monoxide measurement channel fails.

[0106] S315 , determining that at least one of the carbon monoxide measurement channel, the oxygen measurement channel, and the carbon dioxide measurement channel in the preset monitoring device fails, and executing step 318 .

[0107] Specifically, if the measurement deviation rate of carbon monoxide is greater than the second preset threshold, and the second measurement deviation rate of oxygen is greater than the second preset threshold, it can be determined that the carbon monoxide measurement channel, the oxygen measurement channel and / or the carbon dioxide measurement channel is faulty.

[0108] S316: Set and calibrate the oxygen measurement channel and the carbon dioxide measurement channel.

[0109] The setting calibration includes at least zero point calibration and range calibration.

[0110] Specifically, the name of the inaccurate gas can be displayed as an alarm through the preset display screen, such as "inaccurate oxygen concentration fault", to remind the operator to pay attention, and automatically switch the preset monitoring device to the calibration state, and start zero point calibration and range calibration for the oxygen measurement channel and the carbon dioxide measurement channel one by one. After the calibration is completed, the preset monitoring device can be automatically switched from the calibration state to the normal monitoring state to resume monitoring of the flue gas components of the thermal power plant. Among them, zero point calibration and range calibration are commonly used calibration methods for instruments, and the set calibration can also be other calibration methods, which are not limited here.

[0111] S317. Set and calibrate the carbon monoxide measurement channel.

[0112] S318. Set and calibrate the carbon monoxide measurement channel, the oxygen measurement channel, and the carbon dioxide measurement channel.

[0113] The fault determination method of the gas monitoring device provided by the embodiment of the present invention first uses a preset monitoring device to determine the measured concentration of each gas type in a first preset gas type set in the mixed gas to be tested, then determines the fuel coefficient of the preset fuel according to the received base oxygen and the received base in the preset fuel, and for the cases where the measured concentration of carbon monoxide is zero or non-zero, uses the correlation relationship between the fuel coefficient and the measured concentration to determine the theoretical concentration of each gas type in a second preset gas type set, then determines the measurement deviation rate according to the measured concentration and theoretical concentration of oxygen and / or carbon monoxide, and finally determines the measurement deviation rate according to the size relationship between the measurement deviation rate and the preset threshold value. Determine the measurement channel that may have faults in the preset monitoring device, and calibrate the measurement channel. For the two cases where the measured concentration of carbon monoxide is zero and non-zero, as well as the relationship between the measurement deviation rate and the preset threshold, accurately judge the gas measurement channel that may have faults, and by correcting the gas measurement channel that may have faults, the preset monitoring device is restored to normal in time, solving the problem of inaccurate gas concentration measurement caused by inaccurate or untimely fault determination of the gas monitoring device, ensuring the accuracy of the monitored gas concentration, and providing an accurate reference basis for carbon emission trading and gaseous pollutant charges under the dual carbon goals.

[0114] Embodiment 4

[0115] Figure 4 This is a schematic diagram of the structure of a fault determination device for a gas monitoring device provided in Embodiment 3 of the present invention. Figure 4 As shown, the device includes: a measured concentration determination module 401, a theoretical concentration determination module 402 and a fault determination and processing module 403, wherein:

[0116] A measurement concentration determination module, used to determine the measurement concentration of each gas type in a first preset gas type set in a mixed gas to be measured generated by combustion of a preset fuel using a preset monitoring device, wherein the first preset gas type set includes at least three gas types;

[0117] a theoretical concentration determination module, configured to determine a fuel coefficient of the preset fuel, and determine a theoretical concentration of each gas type in a second preset gas type set in the mixed gas to be measured by using a correlation between the fuel coefficient and the measured concentration, wherein the second preset gas type set is a subset of the first preset gas type set;

[0118] A fault determination and processing module is used to determine the measurement deviation rate of each gas type in the second preset gas type set based on the measured concentration and the theoretical concentration. If the measurement deviation rate is greater than a preset threshold, it is determined that a measurement channel in the preset monitoring device has a fault, and the measurement channel is calibrated, wherein the measurement channel is used to determine the measured concentration.

[0119] The fault determination device of the gas monitoring device provided in the embodiment of the present invention first uses a preset monitoring device to determine the measured concentration of each gas type in a first preset gas type set in the mixed gas to be tested, then calculates the fuel coefficient, and uses the correlation between the fuel coefficient and the measured concentration to determine the theoretical concentration of each gas type in a second preset gas type set, and then determines the measurement deviation rate based on the measured concentration and the theoretical concentration. If the measurement deviation rate is greater than a preset threshold, it is determined that a measurement channel in the preset monitoring device has a fault, and the measurement channel is calibrated. By calculating the measurement deviation rate of the gas concentration, it can be accurately determined whether the detected gas concentration is correct. When it is determined to be inaccurate, the monitoring device can be calibrated in time, thereby solving the problem of inaccurate measurement of gas concentration due to inaccurate or untimely fault determination of the gas monitoring device, thereby ensuring the accuracy of the monitored gas concentration.

[0120] Optionally, the theoretical concentration determination module includes:

[0121] A first determination unit is used to determine a conversion coefficient, a dry ash-free basis carbon, a dry ash-free basis hydrogen, and a dry ash-free basis nitrogen according to a first received basis, a dry ash-free basis fixed carbon, and a dry ash-free basis volatile matter of the preset fuel, wherein the first received basis includes a received basis moisture content and a received basis ash content;

[0122] a second determining unit, for determining a received basis oxygen and a received basis according to the conversion coefficient, the dry ash-free basis carbon, the dry ash-free basis hydrogen, the dry ash-free basis nitrogen, and a second received basis, wherein the second received basis includes a received basis sulfur, the received basis ash, and the received basis moisture, and the received basis includes a received basis carbon, a received basis hydrogen, and a received basis nitrogen;

[0123] A fuel coefficient determination unit is used to determine the fuel coefficient of the preset fuel according to the received basis oxygen and the received basis.

[0124] Optionally, the theoretical concentration determination module includes:

[0125] a first sum value determining unit, configured to determine a first sum value of a measured concentration of carbon dioxide and a measured concentration of sulfur dioxide in the first preset gas, and a second sum value of a preset value and the fuel coefficient if the measured concentration of carbon monoxide in the first preset gas is zero;

[0126] An oxygen concentration determination unit is used to determine a first difference between a preset coefficient and a first product value, and determine the first difference as a first theoretical concentration of oxygen, wherein the oxygen belongs to the second preset gas type set, and the first product value is the product of the first sum value and the second sum value.

[0127] Optionally, the theoretical concentration determination module further includes:

[0128] a third determining unit, configured to determine, if the measured concentration of carbon monoxide in the first preset gas is greater than zero, a second theoretical concentration of oxygen, a third sum of the measured concentrations of carbon dioxide and sulfur dioxide in the first preset gas, a fourth sum of the preset value and the fuel coefficient, and a second product of the third sum and the fourth sum, wherein the second theoretical concentration is determined in the same manner as the first theoretical concentration;

[0129] A carbon monoxide concentration determination unit is used to determine a second difference between the preset coefficient and the fifth sum value, and to determine a quotient of the second difference and the preset sum value, and to determine the quotient value as a theoretical concentration of carbon monoxide, wherein the carbon monoxide also belongs to the second preset gas type set, the preset sum value is the sum of the fuel coefficient and a preset empirical value, and the fifth sum value is the sum of the second product value and the measured concentration of oxygen in the first preset gas.

[0130] Optionally, the first preset gas type set includes oxygen, carbon monoxide, carbon dioxide and sulfur dioxide, and the fault determination and processing module includes:

[0131] a first deviation rate determining unit, configured to determine, if the measured concentration of carbon monoxide is zero, an absolute value of a ratio of a difference between a theoretical concentration of oxygen and a measured concentration of oxygen to the measured concentration of oxygen, to obtain a first measurement deviation rate of oxygen, wherein the oxygen belongs to the second preset gas type set;

[0132] A second deviation rate determination unit is used to determine the second measurement deviation rate of oxygen if the measured concentration of carbon monoxide is greater than zero, and determine the absolute value of the ratio of the difference between the theoretical concentration and the measured concentration of carbon monoxide to the measured concentration of carbon monoxide, to obtain the measurement deviation rate of carbon monoxide, wherein the determination method of the second measurement deviation rate is consistent with the determination method of the first measurement deviation rate, and the carbon monoxide also belongs to the second preset gas type set.

[0133] Optionally, the fault determination and processing module includes:

[0134] a first fault determination unit, configured to determine that at least one of the oxygen measurement channel and the carbon dioxide measurement channel in the preset monitoring device has a fault if the measured concentration of the carbon monoxide is zero and the first measurement deviation rate is greater than a first preset threshold;

[0135] a second fault determination unit, configured to determine that at least one of the carbon monoxide measurement channel, the oxygen measurement channel, and the carbon dioxide measurement channel in the preset monitoring device has a fault if the measured concentration of the carbon monoxide is greater than zero and the measurement deviation rate of the carbon monoxide is greater than a second preset threshold;

[0136] The third fault determination unit is used to determine that a fault occurs in the carbon monoxide measurement channel in the preset monitoring device if the measured concentration of carbon monoxide is greater than zero, the measured deviation rate of carbon monoxide is greater than the second preset threshold, and the second measurement deviation rate is less than or equal to the second preset threshold.

[0137] Optionally, the fault determination and processing module includes:

[0138] a first fault processing unit, configured to perform setting correction on the oxygen measurement channel and the carbon dioxide measurement channel if it is determined that at least one of the oxygen measurement channel and the carbon dioxide measurement channel fails, wherein the setting correction at least includes zero point correction and range correction;

[0139] a second fault processing unit, configured to perform the setting correction on the carbon monoxide measurement channel, the oxygen measurement channel and the carbon dioxide measurement channel if it is determined that at least one of the carbon monoxide measurement channel, the oxygen measurement channel and the carbon dioxide measurement channel is faulty;

[0140] The third fault processing unit is configured to perform the setting correction on the carbon monoxide measurement channel if it is determined that the carbon monoxide measurement channel fails.

[0141] The fault determination device of the gas monitoring device provided in the embodiment of the present invention can execute the fault determination method of the gas monitoring device provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0142] Embodiment 5

[0143] Figure 5A schematic diagram of an electronic device 50 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0144] like Figure 5 As shown, the electronic device 50 includes at least one processor 51, and a memory connected to the at least one processor 51 in communication, such as a read-only memory (ROM) 52, a random access memory (RAM) 53, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 51 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 52 or the computer program loaded from the storage unit 58 to the random access memory (RAM) 53. In the RAM 53, various programs and data required for the operation of the electronic device 50 can also be stored. The processor 51, the ROM 52, and the RAM 53 are connected to each other via a bus 54. An input / output (I / O) interface 55 is also connected to the bus 54.

[0145] A number of components in the electronic device 50 are connected to the I / O interface 55, including: an input unit 56, such as a keyboard, a mouse, etc.; an output unit 57, such as various types of displays, speakers, etc.; a storage unit 58, such as a disk, an optical disk, etc.; and a communication unit 59, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 59 allows the electronic device 50 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0146] The processor 51 may be a variety of general and / or dedicated processing components with processing and computing capabilities. Some examples of the processor 51 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 51 executes the various methods and processes described above, such as a fault determination method for a gas monitoring device.

[0147] In some embodiments, the fault determination method of the gas monitoring device may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 58. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 50 via the ROM 52 and / or the communication unit 59. When the computer program is loaded into the RAM 53 and executed by the processor 51, one or more steps of the fault determination method of the gas monitoring device described above may be performed. Alternatively, in other embodiments, the processor 51 may be configured to execute the fault determination method of the gas monitoring device in any other appropriate manner (e.g., by means of firmware).

[0148] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0149] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0150] The computer device provided above can be used to execute the fault determination method of the gas monitoring device provided in any of the above embodiments, and has corresponding functions and beneficial effects.

[0151] Embodiment 6

[0152] In the context of the present invention, a computer-readable storage medium may be a tangible medium, wherein the computer-executable instructions, when executed by a computer processor, are used to perform a fault determination method of a gas monitoring device, the method comprising:

[0153] Determine, by using a preset monitoring device, the measured concentration of each gas type in a first preset gas type set in a mixed gas to be tested generated by combustion of a preset fuel, wherein the first preset gas type set includes at least three gas types;

[0154] Determine a fuel coefficient of the preset fuel, and determine a theoretical concentration of each gas type in a second preset gas type set in the mixed gas to be measured by using a correlation between the fuel coefficient and the measured concentration, wherein the second preset gas type set is a subset of the first preset gas type set;

[0155] According to the measured concentration and the theoretical concentration, the measurement deviation rate of each gas type in the second preset gas type set is determined. If the measurement deviation rate is greater than a preset threshold, it is determined that a measurement channel in the preset monitoring device fails, and the measurement channel is calibrated, wherein the measurement channel is used to determine the measured concentration.

[0156] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by an instruction execution system, device or equipment or used with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0157] The computer device provided above can be used to execute the fault determination method of the gas monitoring device provided in any of the above embodiments, and has corresponding functions and beneficial effects.

[0158] It is worth noting that in the embodiment of the fault determination device of the above-mentioned gas monitoring device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0159] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for determining a fault of a gas monitoring device, characterized in that: include: Determine, by using a preset monitoring device, the measured concentration of each gas type in a first preset gas type set in the mixed gas to be tested generated by the combustion of a preset fuel, wherein the first preset gas type set includes at least three gas types; the first preset gas type set includes oxygen, carbon monoxide, carbon dioxide and sulfur dioxide; Determine a fuel coefficient of the preset fuel, and determine a theoretical concentration of each gas type in a second preset gas type set in the mixed gas to be measured by using a correlation between the fuel coefficient and the measured concentration, wherein the second preset gas type set is a subset of the first preset gas type set; Determine the measurement deviation rate of each gas type in the second preset gas type set according to the measured concentration and the theoretical concentration, and if the measurement deviation rate is greater than a preset threshold, determine that a measurement channel in the preset monitoring device fails, and calibrate the measurement channel, wherein the measurement channel is used to determine the measured concentration; Wherein, the determining the theoretical concentration of each gas type in the second preset gas type set in the mixed gas to be measured by using the correlation between the fuel coefficient and the measured concentration includes: If the measured concentration of carbon monoxide in the first preset gas is zero, determining a first sum of the measured concentration of carbon dioxide and the measured concentration of sulfur dioxide in the first preset gas, and a second sum of a preset value and the fuel coefficient; Determine a first difference between a preset coefficient and a first product value, and determine the first difference as a first theoretical concentration of oxygen, wherein the oxygen belongs to the second preset gas type set, and the first product value is a product value of the first sum value and the second sum value; If the measured concentration of carbon monoxide in the first preset gas is greater than zero, then determining a second theoretical concentration of oxygen, a third sum of the measured concentrations of carbon dioxide and sulfur dioxide in the first preset gas, a fourth sum of the preset value and the fuel coefficient, and a second product of the third sum and the fourth sum, wherein the second theoretical concentration is determined in the same manner as the first theoretical concentration; Determine a second difference between the preset coefficient and the fifth sum value, and determine a quotient of the second difference and the preset sum value, and determine the quotient value as a theoretical concentration of carbon monoxide, wherein the carbon monoxide belongs to the second preset gas type set, the preset sum value is the sum of the fuel coefficient and a preset empirical value, and the fifth sum value is the sum of the second product value and the measured concentration of oxygen in the first preset gas; Wherein, determining the measurement deviation rate of each gas type in the second preset gas type set according to the measured concentration and the theoretical concentration includes: If the measured concentration of carbon monoxide is zero, determining an absolute value of a ratio of a difference between a theoretical concentration of oxygen and a measured concentration of oxygen to the measured concentration of oxygen, to obtain a first measurement deviation rate of oxygen, wherein the oxygen belongs to the second preset gas type set; If the measured concentration of carbon monoxide is greater than zero, the second measurement deviation rate of oxygen is determined, and the absolute value of the ratio of the difference between the theoretical concentration and the measured concentration of carbon monoxide to the measured concentration of carbon monoxide is determined to obtain the measurement deviation rate of carbon monoxide, wherein the method for determining the second measurement deviation rate is consistent with the method for determining the first measurement deviation rate, and the carbon monoxide also belongs to the second preset gas type set.

2. The method according to claim 1, characterized in that The step of determining the fuel coefficient of the preset fuel comprises: Determine a conversion coefficient, dry ash-free carbon, dry ash-free hydrogen, and dry ash-free nitrogen according to a first received basis, dry ash-free fixed carbon, and dry ash-free volatile matter of the preset fuel, wherein the first received basis includes received basis moisture and received basis ash; Determine a received basis oxygen and a received basis according to the conversion coefficient, the dry ash-free basis carbon, the dry ash-free basis hydrogen, the dry ash-free basis nitrogen and a second received basis, wherein the second received basis includes received basis sulfur, the received basis ash and the received basis moisture, and the received basis includes received basis carbon, received basis hydrogen and received basis nitrogen; The fuel coefficient of the preset fuel is determined according to the received radical oxygen and the received radical.

3. The method according to claim 1, characterized in that If the measurement deviation rate is greater than a preset threshold, determining that a measurement channel in the preset monitoring device fails includes: If the measured concentration of carbon monoxide is zero and the first measurement deviation rate is greater than a first preset threshold, it is determined that at least one of the oxygen measurement channel and the carbon dioxide measurement channel in the preset monitoring device is faulty; If the measured concentration of carbon monoxide is greater than zero, and the measured deviation rate of carbon monoxide is greater than a second preset threshold, it is determined that at least one of the carbon monoxide measurement channel, the oxygen measurement channel, and the carbon dioxide measurement channel in the preset monitoring device is faulty; If the measured concentration of carbon monoxide is greater than zero, the measured deviation rate of carbon monoxide is greater than the second preset threshold, and the second measured deviation rate is less than or equal to the second preset threshold, it is determined that the carbon monoxide measurement channel in the preset monitoring device is faulty.

4. The method according to claim 3, characterized in that The calibrating the measurement channel comprises: If it is determined that at least one of the oxygen measurement channel and the carbon dioxide measurement channel fails, setting and correcting the oxygen measurement channel and the carbon dioxide measurement channel, wherein the setting and correction at least includes zero point correction and range correction; If it is determined that at least one of the carbon monoxide measurement channel, the oxygen measurement channel and the carbon dioxide measurement channel fails, performing the setting correction on the carbon monoxide measurement channel, the oxygen measurement channel and the carbon dioxide measurement channel; If it is determined that the carbon monoxide measurement channel fails, the setting correction is performed on the carbon monoxide measurement channel.

5. A fault determination device for a gas monitoring device, characterized in that: include: A measurement concentration determination module, used to determine the measurement concentration of each gas type in a first preset gas type set in a mixed gas to be tested generated by combustion of a preset fuel using a preset monitoring device, wherein the first preset gas type set includes at least three gas types; the first preset gas type set includes oxygen, carbon monoxide, carbon dioxide and sulfur dioxide; a theoretical concentration determination module, configured to determine a fuel coefficient of the preset fuel, and determine a theoretical concentration of each gas type in a second preset gas type set in the mixed gas to be measured by using a correlation between the fuel coefficient and the measured concentration, wherein the second preset gas type set is a subset of the first preset gas type set; a fault determination and processing module, configured to determine a measurement deviation rate of each gas type in the second preset gas type set according to the measured concentration and the theoretical concentration, and if the measurement deviation rate is greater than a preset threshold, determine that a measurement channel in the preset monitoring device fails, and calibrate the measurement channel, wherein the measurement channel is used to determine the measured concentration; Wherein, the theoretical concentration determination module includes: a first sum value determining unit, configured to determine a first sum value of a measured concentration of carbon dioxide and a measured concentration of sulfur dioxide in the first preset gas, and a second sum value of a preset value and the fuel coefficient if the measured concentration of carbon monoxide in the first preset gas is zero; an oxygen concentration determination unit, configured to determine a first difference between a preset coefficient and a first product value, and determine the first difference as a first theoretical concentration of oxygen, wherein the oxygen belongs to the second preset gas type set, and the first product value is a product value of the first sum value and the second sum value; a third determining unit, configured to determine, if the measured concentration of carbon monoxide in the first preset gas is greater than zero, a second theoretical concentration of oxygen, a third sum of the measured concentrations of carbon dioxide and sulfur dioxide in the first preset gas, a fourth sum of the preset value and the fuel coefficient, and a second product of the third sum and the fourth sum, wherein the second theoretical concentration is determined in the same manner as the first theoretical concentration; a carbon monoxide concentration determination unit, configured to determine a second difference between the preset coefficient and the fifth sum value, and determine a quotient of the second difference and the preset sum value, and determine the quotient value as a theoretical concentration of carbon monoxide, wherein the carbon monoxide belongs to the second preset gas type set, the preset sum value is the sum of the fuel coefficient and a preset empirical value, and the fifth sum value is the sum of the second product value and a measured concentration of oxygen in the first preset gas; Wherein, the fault determination and processing module includes: a first deviation rate determining unit, configured to determine, if the measured concentration of carbon monoxide is zero, an absolute value of a ratio of a difference between a theoretical concentration of oxygen and a measured concentration of oxygen to the measured concentration of oxygen, to obtain a first measurement deviation rate of oxygen, wherein the oxygen belongs to the second preset gas type set; A second deviation rate determination unit is used to determine the second measurement deviation rate of oxygen if the measured concentration of carbon monoxide is greater than zero, and determine the absolute value of the ratio of the difference between the theoretical concentration and the measured concentration of carbon monoxide to the measured concentration of carbon monoxide, to obtain the measurement deviation rate of carbon monoxide, wherein the determination method of the second measurement deviation rate is consistent with the determination method of the first measurement deviation rate, and the carbon monoxide also belongs to the second preset gas type set.

6. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the fault determination method of the gas monitoring device according to any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the fault determination method of the gas monitoring device according to any one of claims 1 to 4 when executed.

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