Control system for testing total moisture of coal sample

Abstract

The invention relates to the technical field of coal sample moisture test control, and particularly discloses a control system for coal sample total moisture test. Comprising a coal sample parameter acquisition module, a test temperature adjustment analysis module, a moisture evaporation rate analysis module, a coal sample test control evaluation module, a test particle detection analysis module, a test air pressure adjustment analysis module, a coal sample test adjustment evaluation module, a control terminal, a cloud database and test equipment. The method comprises the following steps: formulating a test comprehensive control evaluation rule of a coal sample in each test time period through comprehensive control parameters, further determining a test control evaluation result of the coal sample in each test time period through comprehensive adjustment coefficients, and determining the test control evaluation result of the coal sample in each test time period through combination of the comprehensive control parameters and the comprehensive adjustment coefficients. Further accurate control on the total moisture test of the coal sample can be realized, the accuracy and the reliability of the test are improved, and more powerful data support is provided for the total moisture test of the coal sample.

Description

Technical Field

[0001] This invention relates to the field of coal sample moisture testing and control technology, specifically to a control system for testing the total moisture content of coal samples. Background Technology

[0002] Existing methods for testing the total moisture content of coal samples mainly rely on empirical values ​​and correction coefficients for test control. Their accuracy is limited by the uncertainty of changes in coal sample characteristics and the lack of a real-time adjustment mechanism for control parameters. Test results are easily affected by factors such as ambient temperature, air pressure, and coal sample particle size, resulting in inaccurate moisture content data and failing to meet the coal industry's requirements for the accuracy of coal sample moisture testing.

[0003] Currently, the control and analysis techniques for coal sample moisture testing tend to focus on optimizing single test parameters, lacking solutions that comprehensively analyze multiple factors. For example, they may only focus on adjusting temperature or moisture evaporation rate, ignoring the impact of key factors such as coal sample particle size and test pressure on the test results, resulting in a lack of specificity and flexibility in the testing process.

[0004] In addition, existing coal sample moisture testing systems lack intelligent control functions and cannot automatically adjust the testing process in real time according to the actual situation of the coal sample, making it difficult to fully utilize the performance of the testing equipment. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides a control system for testing the total moisture content of coal samples, in order to solve the aforementioned technical defects.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a control system for testing the total moisture content of coal samples, comprising a coal sample parameter acquisition module, a test temperature adjustment and analysis module, a moisture evaporation rate analysis module, a coal sample test control and evaluation module, a test particle detection and analysis module, a test gas pressure adjustment and analysis module, a coal sample test adjustment and evaluation module, a control terminal, a cloud database, and testing equipment.

[0007] The coal sample parameter acquisition module is used to monitor and acquire the test parameters of the coal sample at each test time point in each test period in real time, and obtain the test parameters of the coal sample at each test time point in each test period.

[0008] The test temperature adjustment analysis module is used to calculate and analyze the temperature values ​​of the coal sample at each test time point in each test period, and obtain the temperature adjustment value of the coal sample at each test time point in each test period.

[0009] The moisture evaporation rate analysis module is used to calculate and analyze the initial moisture content values ​​of coal samples at each test time point in each test period, and obtain the moisture evaporation rate deviation index of coal samples at each test time point in each test period.

[0010] The coal sample testing control and evaluation module is used to comprehensively analyze the temperature deviation index and the moisture evaporation rate deviation index of the coal sample at each test time point in each test period, and obtain the comprehensive control parameters of the coal sample at each test time point in each test period.

[0011] The particle detection and analysis module is used to calculate and analyze the particle values ​​of coal samples at each test time point in each test period, and obtain the coal sample particle adjustment index at each test time point in each test period.

[0012] The test pressure adjustment analysis module is used to calculate and analyze the pressure values ​​of coal samples at each test time point in each test period, and obtain the test pressure adjustment index of coal samples at each test time point in each test period.

[0013] The coal sample test adjustment and evaluation module is used to comprehensively analyze the coal sample particle adjustment index and the test gas pressure adjustment index at each test time point in each test period of the coal sample, and obtain the comprehensive adjustment coefficient of the coal sample at each test time point in each test period.

[0014] The control terminal is used to intelligently regulate the heating power of the testing equipment based on the comprehensive control parameters and comprehensive adjustment coefficients of each test time point in each test period of the coal sample.

[0015] The cloud database is used to store the test parameters and corresponding standard values ​​of coal samples at each test time point in each test period.

[0016] Furthermore, the test parameters for each test time point in each test period of the coal sample include the particle size, air pressure, temperature, initial weight, test weight, initial moisture content, and heating power of the coal sample.

[0017] Furthermore, the temperature values ​​of the coal sample at each test time point within each test period are calculated and analyzed. The specific calculation and analysis method is as follows:

[0018] The temperature values ​​of each test time point in each test period of the coal sample are obtained. The standard temperature range of the coal sample in each test period of total moisture is extracted from the cloud database. The maximum and minimum standard temperatures of the coal sample in each test period of total moisture are extracted. The temperature deviation value of the coal sample in each test period of total moisture is calculated. At the same time, the median standard temperature of the coal sample in each test period of total moisture is obtained. The average temperature deviation value of the coal sample in each test period of total moisture is calculated.

[0019] The temperature deviation index of the coal sample at each test time point in each test period was calculated using the above parameters.

[0020] Furthermore, the initial moisture content values ​​of the coal samples at each test time point within each test period are calculated and analyzed. The specific calculation and analysis method is as follows:

[0021] The initial weight value of the coal sample to be tested and the test weight value of the coal sample at each test time point in each test period are obtained. At the same time, the initial moisture content value of the coal sample at each test time point in each test period is obtained, and the moisture content value of the coal sample at each test time point in each test period is calculated.

[0022] The evaporation rate of coal sample moisture at each test time point in each test period is calculated by using the coal sample moisture content value and the initial moisture content value. At the same time, the dynamic value of coal sample moisture evaporation at each test time point in each test period is also calculated.

[0023] The deviation index of moisture evaporation rate at each test time point in each test period was calculated using the above parameters.

[0024] Furthermore, a comprehensive analysis is conducted on the temperature deviation index and the moisture evaporation rate deviation index of the coal sample at each test time point within each test period. The specific analysis method is as follows:

[0025] Two temperature deviation index thresholds, k1 and k2, are obtained from the cloud database to define the temperature deviation index of each test time point in each test period of the coal sample. The temperature deviation index of each test time point in each test period of the coal sample is compared and analyzed with k1 and k2 to obtain the definition of each test time point in each test period of the coal sample, including low temperature deviation, medium temperature deviation and high temperature deviation.

[0026] Two threshold values ​​for the moisture evaporation rate deviation index of coal samples at each test time point in each test period were obtained from the cloud database and denoted as g1 and g2, respectively. The moisture evaporation rate deviation index of coal samples at each test time point in each test period was compared and analyzed with g1 and g2 to obtain the definition of each test time point of coal samples in each test period, including low evaporation rate deviation, medium evaporation rate deviation and high evaporation rate deviation.

[0027] When the coal sample has a low temperature deviation at each test time point in each test period and a low evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P1, and P1 = P × (1 + 0.2), where P represents the actual output power of the test equipment at each test time point in each test period.

[0028] When the coal sample has a low temperature deviation at each test time point in each test period and a medium evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P2, and P2 = P × (1 + 0.1).

[0029] When the coal sample has a low temperature deviation at each test time point in each test period and a high evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P3, and P3 = P × (1 - 0.05).

[0030] When the coal sample has a medium temperature deviation at each test time point in each test period and a medium evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P4, and P4 = P.

[0031] When the coal sample has a medium temperature deviation at each test time point in each test period and a high evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P3.

[0032] When the coal sample has a high temperature deviation at each test time point in each test period and a high evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P5, and P1 = P × (1 - 0.15).

[0033] When the coal sample has a high temperature deviation at each test time point in each test period and a low evaporation rate deviation at each test time point in each test period, the comprehensive control parameter P5 is generated for each test time point in each test period, and the test time is shortened.

[0034] Furthermore, the particle size distribution of the coal sample at each test time point within each test period is calculated and analyzed. The specific calculation and analysis method is as follows:

[0035] Obtain the particle size distribution of the coal sample corresponding to the total moisture content test, and simultaneously obtain the particle diameter cutoff value of the coal sample corresponding to the total moisture content test. Divide the number of coal samples with particle size distribution smaller than the particle diameter cutoff value by the total number of coal samples to obtain the small particle ratio, denoted as Ps. Divide the number of coal samples with particle size distribution larger than the particle diameter cutoff value by the total number of coal samples to obtain the large particle ratio, denoted as Pl.

[0036] According to the formula The coal sample particle adjustment index KS is calculated for each test time point in each test period, where a1 and a2 represent the corresponding weighting factors.

[0037] Furthermore, the gas pressure values ​​at each test time point within each test period of the coal sample are calculated and analyzed. The specific calculation and analysis method is as follows:

[0038] Obtain the gas pressure value and standard gas pressure value at each test time point in each test period of the coal sample, and record them as Pt and Pc respectively;

[0039] According to the formula The test pressure adjustment index KP for each test time point in each test period of the coal sample is calculated, and a3 represents the corresponding weighting factor.

[0040] Furthermore, the comprehensive analysis of the coal sample particle adjustment index and the test gas pressure adjustment index at each test time point within each test period is as follows:

[0041] According to the formula Calculate the comprehensive adjustment coefficient for each test time point in each test period for the coal sample, where This represents the corresponding weighting factor, 0 < <1;

[0042] If C > 1, it means that the test conditions of the coal sample at each test time point in each test period are conducive to moisture evaporation. The comprehensive adjustment coefficient of the coal sample at each test time point in each test period is defined as P6, P6 = P × [1 - q1 × (C - 1)], where q1 represents the set adjustment factor.

[0043] If C < 1, it means that the test conditions of the coal sample at each test time point in each test period are not conducive to moisture evaporation. The comprehensive adjustment coefficient of the coal sample at each test time point in each test period is defined as P7, P7 = P × [1 + q2 × (1 - C)], where q2 represents the set adjustment factor.

[0044] The beneficial effects of this invention are:

[0045] 1. This invention controls and analyzes the total moisture content test of coal samples from two aspects. First, it analyzes the temperature and moisture evaporation rate of the coal sample during the total moisture content test. Based on the analysis results of different test temperatures and moisture evaporation rates, comprehensive control parameters are generated, and comprehensive control evaluation rules for the coal sample in each test period are formulated. Then, by analyzing and calculating the particle size and test pressure of the coal sample during the total moisture content test, a comprehensive adjustment coefficient is obtained, further determining the test control evaluation results for the coal sample in each test period. By combining the comprehensive control parameters and the comprehensive adjustment coefficient, further precise control of the total moisture content test of coal samples can be achieved, improving the accuracy and reliability of the test and providing stronger data support for the total moisture content test of coal samples.

[0046] 2. In this invention, the initial weight of the coal sample to be tested and the test weight at each test time point in each test period are obtained. Combined with the initial moisture content of the coal sample at each test time point in each test period, the moisture content of the coal sample is calculated, and then the coal moisture evaporation rate is obtained, reflecting the dynamic change of the coal sample moisture over time. By calculating the dynamic value of moisture evaporation, the moisture evaporation rate deviation index is finally determined. The moisture evaporation of the coal sample in different test periods and time points is comprehensively analyzed, providing a scientific basis and accurate data support for the control and adjustment of the coal sample in the whole moisture test process.

[0047] 3. In this invention, corresponding comprehensive control parameters are generated based on different combinations of deviations. For example, when the coal sample has a low temperature deviation and a low moisture evaporation rate, the comprehensive control parameters will increase the actual output power of the testing equipment to improve the testing environment; while under high temperature and high moisture evaporation rate conditions, the testing power will be reduced accordingly to ensure safety, and even the testing time may be shortened if necessary. Through reasonable parameter adjustment, the testing accuracy and safety of the coal sample can be effectively improved, while taking into account energy efficiency, ensuring that the testing process is carried out efficiently and accurately.

[0048] 4. This invention generates corresponding comprehensive control parameters and adjustment coefficients by comprehensively analyzing the temperature deviation index and moisture evaporation rate deviation index of coal samples at different testing periods and time points, as well as particle size and air pressure values, thereby achieving intelligent control of the testing equipment. Specifically, during coal sample testing, the control system generates different comprehensive control parameters based on different combinations of temperature and moisture evaporation rate. When the coal sample is at a low temperature and the moisture evaporation rate is low, the heating power of the testing equipment is increased to improve the testing environment; while at a high temperature and the moisture evaporation rate is high, the heating power is reduced to ensure safety, and even shorten the testing time. Simultaneously, through the calculation and analysis of particle size and air pressure values, the testing parameters can be further adjusted to ensure that the coal sample testing is both efficient and safe. The introduction of the comprehensive adjustment coefficient allows the control system to more precisely control the heating power according to the coal sample testing state. For example, if the coal sample testing state is favorable for moisture evaporation, the heating power is reduced; conversely, if the state is unfavorable, the heating power is increased, thereby effectively improving the accuracy and safety of coal sample testing while also considering energy efficiency, ensuring that the testing process is efficient and accurate. Attached Figure Description

[0049] The invention will now be further described with reference to the accompanying drawings.

[0050] Figure 1 This is a schematic diagram of a control system for testing the total moisture content of a coal sample, according to an embodiment of the present invention. Detailed Implementation

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.

[0052] As indicated in this invention and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0053] While this invention makes various references to certain modules in systems according to embodiments of the invention, any number of different modules can be used and run on user terminals and / or servers. The modules are merely illustrative, and different aspects of the systems and methods may use different modules.

[0054] This invention uses flowcharts to illustrate the operations performed by the system according to embodiments of the invention. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. Instead, various steps can be processed in reverse order or simultaneously, as needed. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0055] Hereinafter, exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments of the present invention. It should be understood that the present invention is not limited to the exemplary embodiments described herein.

[0056] Example 1:

[0057] Please see Figure 1 As shown, a control system for testing the total moisture content of coal samples includes: a coal sample parameter acquisition module, a test temperature adjustment and analysis module, a moisture evaporation rate analysis module, a coal sample test control and evaluation module, a test particle detection and analysis module, a test gas pressure adjustment and analysis module, a coal sample test adjustment and evaluation module, a control terminal, a cloud database, and test equipment.

[0058] It should be noted that the control system of this invention analyzes and controls the total moisture content test of coal samples from two aspects. First, it analyzes the temperature and moisture evaporation rate of the coal sample during the total moisture content test. Based on the analysis results of different test temperatures and moisture evaporation rates, comprehensive control parameters are generated, and comprehensive control evaluation rules for the coal sample in each test period are formulated. Then, by analyzing and calculating the particle size and test pressure of the coal sample during the total moisture content test, a comprehensive adjustment coefficient is obtained, further determining the test control evaluation results for the coal sample in each test period. By combining the comprehensive control parameters and the comprehensive adjustment coefficient, further precise control of the total moisture content test of coal samples can be achieved, improving the accuracy and reliability of the test and providing stronger data support for the total moisture content test of coal samples.

[0059] The coal sample parameter acquisition module is used to monitor and acquire the test parameters of the coal sample at each test time point in each test period in real time, and obtain the test parameters of the coal sample at each test time point in each test period.

[0060] The test parameters for each test time point in each test period for the coal sample include the particle size, air pressure, temperature, initial weight, test weight, initial moisture content, and heating power of the coal sample.

[0061] The test parameters for each test time point within each test period of the coal sample were obtained using the following method:

[0062] The particle size of the coal sample to be tested is determined by a particle size analyzer to obtain the particle size value of the coal sample to be tested.

[0063] The test pressure of the coal sample at each test time point in each test period is measured by a barometer to obtain the test pressure value of the coal sample at each test time point in each test period.

[0064] The temperature of the coal sample at each test time point in each test period is monitored by a temperature sensor to obtain the temperature value of the coal sample at each test time point in each test period.

[0065] The weight of the coal sample to be tested is measured at each test time point in each test period by a weight sensor, so as to obtain the initial weight value of the coal sample to be tested and the test weight value of the coal sample at each test time point in each test period.

[0066] The initial moisture content of the coal sample to be tested is measured using a moisture meter to obtain the initial moisture content value of the coal sample to be tested.

[0067] Record the actual output power of the testing equipment used for the coal sample to be tested at each test time point in each test period.

[0068] In one specific embodiment, the present invention monitors and acquires multiple key parameters of coal samples at each test time point during each test period in real time, ensuring the accurate acquisition and real-time nature of each parameter, thereby providing reliable data support for subsequent analysis and evaluation.

[0069] The test temperature adjustment analysis module is used to calculate and analyze the temperature values ​​of the coal sample at each test time point within each test period, obtaining the temperature adjustment value of the coal sample at each test time point within each test period. The specific calculation and analysis method is as follows:

[0070] Obtain the temperature value of the coal sample at each test time point during each test period, denoted as T. i i represents the number of each test time point, i=1,2,...,n, and n represents the total number of test time point numbers;

[0071] The standard temperature range for each total moisture test period of the coal sample is extracted from the cloud database, and the maximum and minimum standard temperatures for each total moisture test period are extracted and denoted as Tmax and Tmin, respectively. This is then analyzed using the formula... Calculate the temperature deviation value TP for each testing period of total moisture content in the coal sample, and simultaneously obtain the median standard temperature for each testing period of total moisture content in the coal sample, denoted as Tz. Then, use the formula... Calculate the average temperature deviation (TP) of the coal sample during each testing period for total moisture content;

[0072] According to the formula The temperature deviation index KT of the coal sample at each test time point in each test period is calculated. α1 and α2 represent the corresponding weighting factors, and α1+α2≤1.

[0073] In one specific embodiment, this invention obtains the actual temperature values ​​of each test time point in each test period of the coal sample, and calculates the temperature deviation value for each test period by combining the maximum and minimum values ​​of the standard temperature range extracted from the cloud database. Combined with the median standard temperature of each test period corresponding to the total moisture content of the coal sample, a specific calculation formula is used to derive the temperature deviation index for each test time point. By comparing the actual measurement data with the standard temperature, the temperature values ​​of each test time point of the coal sample are effectively adjusted, making the test results more accurately reflect the actual state of the coal sample, improving the reliability and accuracy of the test results, and thus providing more precise data support for subsequent coal quality analysis.

[0074] The moisture evaporation rate analysis module is used to calculate and analyze the initial moisture content values ​​of coal samples at each test time point within each test period, and to obtain the moisture evaporation rate deviation index of coal samples at each test time point within each test period. The specific calculation and analysis method is as follows:

[0075] Obtain the initial weight value of the coal sample to be tested and the test weight value of the coal sample at each test time point in each test period, denoted as W0 and W1, respectively. t Simultaneously, the initial moisture content value of the coal sample at each test time point in each test period is obtained and denoted as M0.

[0076] Through formula Calculate the moisture content M of the coal sample at each test time point within each test period. t ;

[0077] Through formula Calculate the moisture evaporation rate V of the coal sample at each test time point in each test period;

[0078] Through formula Calculate the dynamic value V of coal sample moisture evaporation at each test time point during each test period. t ;

[0079] Through formula The deviation index KV of moisture evaporation rate at each test time point in each test period of the coal sample is calculated, where β represents the corresponding weighting factor and e represents a constant, and β≤1.

[0080] In one specific embodiment, this invention obtains the initial weight of the coal sample to be tested and the test weight at each test time point during each test period. Combined with the initial moisture content of the coal sample at each test time point during each test period, the moisture content of the coal sample is calculated, thereby deriving the coal moisture evaporation rate, reflecting the dynamic change of the coal sample moisture over time. Furthermore, by calculating the dynamic value of moisture evaporation, the moisture evaporation rate deviation index is finally determined. This comprehensively analyzes the moisture evaporation of the coal sample at different test periods and time points, providing a scientific basis and accurate data support for the control and adjustment of the coal sample during the full moisture testing process.

[0081] The coal sample testing control and evaluation module is used to comprehensively analyze the temperature deviation index and the moisture evaporation rate deviation index of the coal sample at each test time point within each test period, thereby obtaining the comprehensive control parameters for the coal sample at each test time point within each test period. The specific analysis method is as follows:

[0082] Two temperature deviation index thresholds, k1 and k2, are obtained from the cloud database to define the temperature deviation index at each test time point in each test period of the coal sample; where k1 < k2.

[0083] If KT < k1, then the low temperature deviation is defined as each test time point in each test period corresponding to the coal sample.

[0084] If k1 < KT < k2, then the medium temperature deviation is defined as the test time point corresponding to each test period of the coal sample.

[0085] If KT>k2, then the high temperature deviation is defined for each test time point in each test period of the coal sample.

[0086] Two threshold values ​​for the deviation of moisture evaporation rate at each test time point in each test period are obtained from the cloud database and are denoted as g1 and g2, respectively; where g1 < g2.

[0087] If KV < g1, then the low evaporation rate deviation is defined for each test time point in each test period of the coal sample.

[0088] If g1 < KV < g2, then the evaporation rate deviation is defined as the test time point corresponding to each test period of the coal sample.

[0089] If KV > g2, then the high evaporation rate deviation is defined for each test time point in each test period of the coal sample.

[0090] When the coal sample has a low temperature deviation at each test time point in each test period and a low evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P1, and P1 = P × (1 + 0.2), where P represents the actual output power of the test equipment at each test time point in each test period.

[0091] When the coal sample has a low temperature deviation at each test time point in each test period and a medium evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P2, and P2 = P × (1 + 0.1).

[0092] When the coal sample has a low temperature deviation at each test time point in each test period and a high evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P3, and P3 = P × (1 - 0.05).

[0093] When the coal sample has a medium temperature deviation at each test time point in each test period and a medium evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P4, and P4 = P.

[0094] When the coal sample has a medium temperature deviation at each test time point in each test period and a high evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P3.

[0095] When the coal sample has a high temperature deviation at each test time point in each test period and a high evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P5, and P1 = P × (1 - 0.15).

[0096] When the coal sample has a high temperature deviation at each test time point in each test period and a low evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P5, and the test time is shortened.

[0097] In one specific embodiment, the present invention generates corresponding comprehensive control parameters based on different combinations of deviations. For example, when the coal sample exhibits a low temperature deviation and a low moisture evaporation rate, the comprehensive control parameters will increase the actual output power of the testing equipment to improve the testing environment. Conversely, under conditions of high temperature and high moisture evaporation rate, the testing power will be reduced accordingly to ensure safety, and the testing time may even be shortened if necessary. Through reasonable parameter adjustments, the testing accuracy and safety of the coal sample can be effectively improved, while also taking energy efficiency into account, ensuring that the testing process is carried out efficiently and accurately.

[0098] The particle detection and analysis module is used to calculate and analyze the particle values ​​of coal samples at each test time point within each test period, obtaining the coal sample particle adjustment index at each test time point within each test period. The specific calculation and analysis method is as follows:

[0099] Obtain the particle size distribution of the coal sample corresponding to the total moisture content test, and simultaneously obtain the particle diameter cutoff value of the coal sample corresponding to the total moisture content test. Divide the number of coal samples with particle size distribution smaller than the particle diameter cutoff value by the total number of coal samples to obtain the small particle ratio, denoted as Ps. Divide the number of coal samples with particle size distribution larger than the particle diameter cutoff value by the total number of coal samples to obtain the large particle ratio, denoted as Pl.

[0100] According to the formula The coal sample particle adjustment index KS is calculated for each test time point in each test period, where a1 and a2 represent the corresponding weighting factors.

[0101] The test pressure adjustment analysis module is used to calculate and analyze the pressure values ​​of coal samples at each test time point during each test period, and to obtain the test pressure adjustment index for each test time point during each test period. The specific calculation and analysis method is as follows:

[0102] Obtain the gas pressure value and standard gas pressure value at each test time point in each test period of the coal sample, and record them as Pt and Pc respectively;

[0103] According to the formula The test pressure adjustment index KP for each test time point in each test period of the coal sample is calculated, and a3 represents the corresponding weighting factor.

[0104] The coal sample testing adjustment and evaluation module is used to comprehensively analyze the coal sample particle adjustment index and the test gas pressure adjustment index at each test time point within each test period of the coal sample, and obtain the comprehensive adjustment coefficient for each test time point within each test period of the coal sample. The specific analysis method is as follows:

[0105] According to the formula Calculate the comprehensive adjustment coefficient for each test time point in each test period for the coal sample, where This represents the corresponding weighting factor, 0 < <1;

[0106] If C > 1, it means that the test conditions of the coal sample at each test time point in each test period are conducive to moisture evaporation. The comprehensive adjustment coefficient of the coal sample at each test time point in each test period is defined as P6, P6 = P × [1 - q1 × (C - 1)], where q1 represents the set adjustment factor.

[0107] If C < 1, it means that the test conditions of the coal sample at each test time point in each test period are not conducive to moisture evaporation. The comprehensive adjustment coefficient of the coal sample at each test time point in each test period is defined as P7, P7 = P × [1 + q2 × (1 - C)], where q2 represents the set adjustment factor.

[0108] The control terminal is used to intelligently regulate the heating power of the testing equipment based on the comprehensive control parameters and comprehensive adjustment coefficients of each test time point in each test period of the coal sample.

[0109] When the comprehensive control parameters for each test time point in each test period of the coal sample are P1 and P2, and the comprehensive adjustment coefficient for each test time point in each test period of the coal sample is P7, then the heating power of the test equipment for each test time point in each test period of the coal sample is set to P7.

[0110] When the comprehensive control parameters of each test time point in each test period of the coal sample are P1 and P2, and the comprehensive adjustment coefficient of each test time point in each test period of the coal sample is P6, the various test parameters of the test equipment are checked and adjusted.

[0111] When the comprehensive control parameters for each test time point in each test period of the coal sample are P3 and P5, and the comprehensive adjustment coefficient for each test time point in each test period of the coal sample is P6, then the heating power of the test equipment for each test time point in each test period of the coal sample is set to P6.

[0112] When the comprehensive control parameters for each test time point in each test period of the coal sample are P3 and P5, and the comprehensive adjustment coefficient for each test time point in each test period of the coal sample is P7, the various test parameters of the testing equipment are checked and adjusted.

[0113] In one specific embodiment, this invention generates corresponding comprehensive control parameters and comprehensive adjustment coefficients by comprehensively analyzing the temperature deviation index and moisture evaporation rate deviation index of coal samples at different test periods and time points, as well as particle size and air pressure values, thereby achieving intelligent control of the testing equipment. Specifically, during the coal sample testing process, the control system generates different comprehensive control parameters based on different combinations of temperature and moisture evaporation rate. When the coal sample is at a low temperature and the moisture evaporation rate is low, the heating power of the testing equipment is increased to improve the testing environment; while at a high temperature and a high moisture evaporation rate, the heating power is reduced to ensure safety, and even shorten the testing time. Simultaneously, through the calculation and analysis of particle size and air pressure values, the testing parameters can be further adjusted to ensure that the coal sample testing is both efficient and safe. The introduction of the comprehensive adjustment coefficient allows the control system to more finely control the heating power according to the coal sample testing state. For example, if the coal sample testing state is favorable for moisture evaporation, the heating power is reduced; conversely, if the coal sample testing state is unfavorable, the heating power is increased, thereby effectively improving the accuracy and safety of the coal sample testing while also considering energy efficiency, ensuring that the testing process is efficient and accurate.

[0114] The cloud database is used to store the test parameters and corresponding standard values ​​of coal samples at each test time point in each test period.

[0115] The above formulas are all dimensionless calculations. The formulas are derived from software simulations based on a large amount of collected data to obtain the most recent real-world results. The size of the coefficients is to quantify each parameter to obtain a specific value. Regarding the size of the coefficients, it is acceptable as long as it does not affect the proportional relationship between the parameter and the quantized value.

[0116] Furthermore, those skilled in the art will understand that aspects of the present invention can be described and illustrated through several patentable types or situations, including any new and useful combination of processes, machines, products, or substances, or any new and useful improvements thereof. Accordingly, aspects of the present invention can be implemented entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. All of the above hardware or software may be referred to as a "data block," "module," "engine," "unit," "component," or "system." Furthermore, aspects of the present invention may be embodied as a computer product located on one or more computer-readable media, the product comprising computer-readable program code.

[0117] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in a common dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0118] The foregoing description is illustrative of the invention and should not be construed as limiting it. Although several exemplary embodiments of the invention have been described, those skilled in the art will readily understand that many modifications can be made to the exemplary embodiments without departing from the novel teachings and advantages of the invention. Therefore, all such modifications are intended to be included within the scope of the invention as defined in the claims. It should be understood that the foregoing description is illustrative of the invention and should not be construed as limiting it to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The invention is defined by the claims and their equivalents.

Claims

1. A control system for testing the total moisture content of coal samples, comprising a coal sample parameter acquisition module, a test temperature adjustment and analysis module, a moisture evaporation rate analysis module, a coal sample test control and evaluation module, a test particle detection and analysis module, a test gas pressure adjustment and analysis module, a coal sample test adjustment and evaluation module, a control terminal, a cloud database, and test equipment, characterized in that: The coal sample parameter acquisition module is used to monitor and acquire the test parameters of the coal sample at each test time point in each test period in real time, and obtain the test parameters of the coal sample at each test time point in each test period. The test temperature adjustment analysis module is used to calculate and analyze the temperature values ​​of the coal sample at each test time point in each test period, and obtain the temperature adjustment value of the coal sample at each test time point in each test period. The moisture evaporation rate analysis module is used to calculate and analyze the initial moisture content values ​​of coal samples at each test time point in each test period, and obtain the moisture evaporation rate deviation index of coal samples at each test time point in each test period. The coal sample testing control and evaluation module is used to comprehensively analyze the temperature deviation index and the moisture evaporation rate deviation index of the coal sample at each test time point in each test period, and obtain the comprehensive control parameters of the coal sample at each test time point in each test period. The particle detection and analysis module is used to calculate and analyze the particle values ​​of coal samples at each test time point in each test period, and obtain the coal sample particle adjustment index at each test time point in each test period. The test pressure adjustment analysis module is used to calculate and analyze the pressure values ​​of coal samples at each test time point in each test period, and obtain the test pressure adjustment index of coal samples at each test time point in each test period. The coal sample test adjustment and evaluation module is used to comprehensively analyze the coal sample particle adjustment index and the test gas pressure adjustment index at each test time point in each test period of the coal sample, and obtain the comprehensive adjustment coefficient of the coal sample at each test time point in each test period. The control terminal is used to intelligently regulate the heating power of the testing equipment based on the comprehensive control parameters and comprehensive adjustment coefficients of each test time point in each test period of the coal sample. The cloud database is used to store the test parameters and corresponding standard values ​​of coal samples at each test time point in each test period.

2. The control system for testing total moisture content in coal samples according to claim 1, characterized in that: The test parameters for each test time point in each test period of the coal sample include the particle size, air pressure, temperature, initial weight, test weight, initial moisture content, and heating power of the coal sample.

3. The control system for testing total moisture content in coal samples according to claim 1, characterized in that: The temperature values ​​of the coal sample at each test time point during each test period are calculated and analyzed. The specific calculation and analysis method is as follows: The temperature values ​​of each test time point in each test period of the coal sample are obtained. The standard temperature range of the coal sample in each test period of total moisture is extracted from the cloud database. The maximum and minimum standard temperatures of the coal sample in each test period of total moisture are extracted. The temperature deviation value of the coal sample in each test period of total moisture is calculated. At the same time, the median standard temperature of the coal sample in each test period of total moisture is obtained. The average temperature deviation value of the coal sample in each test period of total moisture is calculated. The temperature deviation index of the coal sample at each test time point in each test period was calculated using the above parameters.

4. The control system for testing total moisture content in coal samples according to claim 1, characterized in that: The initial moisture content values ​​of the coal samples at each test time point within each test period are calculated and analyzed. The specific calculation and analysis method is as follows: The initial weight value of the coal sample to be tested and the test weight value of the coal sample at each test time point in each test period are obtained. At the same time, the initial moisture content value of the coal sample at each test time point in each test period is obtained, and the moisture content value of the coal sample at each test time point in each test period is calculated. The evaporation rate of coal sample moisture at each test time point in each test period is calculated by using the coal sample moisture content value and the initial moisture content value. At the same time, the dynamic value of coal sample moisture evaporation at each test time point in each test period is also calculated. The deviation index of moisture evaporation rate at each test time point in each test period was calculated using the above parameters.

5. A control system for testing total moisture content in coal samples according to claim 1, characterized in that: The temperature deviation index and moisture evaporation rate deviation index of the coal sample at each test time point in each test period are comprehensively analyzed. The specific analysis method is as follows: Two temperature deviation index thresholds, k1 and k2, are obtained from the cloud database to define the temperature deviation index of each test time point in each test period of the coal sample. The temperature deviation index of each test time point in each test period of the coal sample is compared and analyzed with k1 and k2 to obtain the definition of each test time point in each test period of the coal sample, including low temperature deviation, medium temperature deviation and high temperature deviation. Two threshold values ​​for the moisture evaporation rate deviation index of coal samples at each test time point in each test period were obtained from the cloud database and denoted as g1 and g2, respectively. The moisture evaporation rate deviation index of coal samples at each test time point in each test period was compared and analyzed with g1 and g2 to obtain the definition of each test time point of coal samples in each test period, including low evaporation rate deviation, medium evaporation rate deviation and high evaporation rate deviation. When the coal sample has a low temperature deviation at each test time point in each test period and a low evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P1, and P1 = P × (1 + 0.2), where P represents the actual output power of the test equipment at each test time point in each test period. When the coal sample has a low temperature deviation at each test time point in each test period and a medium evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P2, and P2 = P × (1 + 0.1). When the coal sample has a low temperature deviation at each test time point in each test period and a high evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P3, and P3 = P × (1 - 0.05). When the coal sample has a medium temperature deviation at each test time point in each test period and a medium evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P4, and P4 = P. When the coal sample has a medium temperature deviation at each test time point in each test period and a high evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P3. When the coal sample has a high temperature deviation at each test time point in each test period and a high evaporation rate deviation at each test time point in each test period, the comprehensive control parameter for each test time point in each test period is P5, and P1 = P × (1 - 0.15). When the coal sample has a high temperature deviation at each test time point in each test period and a low evaporation rate deviation at each test time point in each test period, the comprehensive control parameter P5 is generated for each test time point in each test period, and the test time is shortened.

6. A control system for testing total moisture content in coal samples according to claim 1, characterized in that: The particle size distribution of the coal sample at each test time point within each test period is calculated and analyzed. The specific calculation and analysis method is as follows: Obtain the particle size distribution of the coal sample corresponding to the total moisture content test, and simultaneously obtain the particle diameter cutoff value of the coal sample corresponding to the total moisture content test. Divide the number of coal samples with particle size distribution smaller than the particle diameter cutoff value by the total number of coal samples to obtain the small particle ratio, denoted as Ps. Divide the number of coal samples with particle size distribution larger than the particle diameter cutoff value by the total number of coal samples to obtain the large particle ratio, denoted as Pl. According to the formula The coal sample particle adjustment index KS is calculated for each test time point in each test period, where a1 and a2 represent the corresponding weighting factors.

7. A control system for testing total moisture content in coal samples according to claim 1, characterized in that: The gas pressure values ​​at each test time point in each test period of the coal sample are calculated and analyzed. The specific calculation and analysis method is as follows: Obtain the gas pressure value and standard gas pressure value at each test time point in each test period of the coal sample, and record them as Pt and Pc respectively; According to the formula The test pressure adjustment index KP for each test time point in each test period of the coal sample is calculated, and a3 represents the corresponding weighting factor.

8. A control system for testing total moisture content in coal samples according to claim 1, characterized in that: The analysis of the coal sample particle adjustment index and the test gas pressure adjustment index at each test time point within each test period is as follows: According to the formula Calculate the comprehensive adjustment coefficient for each test time point in each test period for the coal sample, where This represents the corresponding weighting factor, 0 < <1; If C > 1, it means that the test conditions of the coal sample at each test time point in each test period are conducive to moisture evaporation. The comprehensive adjustment coefficient of the coal sample at each test time point in each test period is defined as P6, P6 = P × [1 - q1 × (C - 1)], where q1 represents the set adjustment factor. If C < 1, it means that the test conditions of the coal sample at each test time point in each test period are not conducive to moisture evaporation. The comprehensive adjustment coefficient of the coal sample at each test time point in each test period is defined as P7, P7 = P × [1 + q2 × (1 - C)], where q2 represents the set adjustment factor.

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