A portable air respirator monitoring method and system based on big data

Abstract

The present invention discloses a portable air respirator monitoring method and system based on big data, which relates to the field of physical testing technology. First, the external environment data of the portable air respirator is monitored and collected and analyzed, and the external environment monitoring impact value of the portable air respirator in each monitoring time period is obtained and an early warning is issued; at the same time, the performance is tested and monitored in a performance test environment, and the performance test parameters are obtained and analyzed to obtain a comprehensive performance index, which can comprehensively evaluate the appearance of the respirator. Detailed feedback prompts are generated, which helps to discover potential problems of the equipment in advance, ensure the safety and effective operation of the equipment, and provide a scientific basis for subsequent maintenance and improvement, which can effectively protect the safety and health of users in work and emergency environments.

Description

Technical Field

[0001] The present invention relates to the field of physical testing technology, and in particular to a portable air respirator monitoring method and system based on big data. Background Art

[0002] Portable respirator monitoring is designed to ensure the safety and health of users in various environments. These systems usually integrate sensor technology to monitor the oxygen concentration, harmful gas content and air quality parameters in the air in real time. Overall, portable respirator monitoring combines the Internet of Things, sensor technology, data analysis and human-computer interaction design to provide users with efficient and safe air quality monitoring solutions.

[0003] The prior art, such as the invention patent with announcement number CN103900839B, is a method and system for monitoring the respirator in the transformer, which includes: real-time acquisition of the gas flow value output by the respirator in the transformer; real-time acquisition of the temperature value and humidity value output by the transformer; obtaining the pre-set silicone performance of the respirator according to the model corresponding to the transformer; obtaining the pre-set hygroscopic characteristic curve of the respirator under the gas flow value, temperature value, and humidity value working conditions according to the silicone performance; drawing the moisture content curve of the current inhaled gas of the respirator according to the collected gas flow value, temperature value, and humidity value; determining the operating condition of the respirator according to the pre-set hygroscopic characteristic curve of the respirator and the moisture content curve of the current inhaled gas of the respirator. The gas flow value of the transformer is output through the flow meter serially connected to the respirator in the transformer, and the silicone characteristic curve is analyzed to determine whether the silicone in the respirator is invalid, so as to realize the monitoring of the silicone status of the existing transformer respirator.

[0004] The prior art, such as the invention patent with publication number CN117571359A, is an online automatic calibration device and method for a transformer breathing system, which belongs to the technical field of transformer breathing system status evaluation; it solves the problem that the existing detection methods or devices cannot perform online evaluation of the transformer breathing system; it includes an oil storage cabinet and a calibration device located inside the transformer, a capsule is suspended in the oil storage cabinet, a gas flow meter and a humidity sensor are arranged in the pipeline connecting the capsule and the respirator, and an environmental humidity simulation device is mounted on the respirator; oil level monitors are respectively arranged on the top and bottom of the oil storage cabinet; a partition is arranged in the calibration device, springs are respectively fixed between the partition and the top and bottom of the calibration device, an oil drain motor and an oil inlet motor are respectively connected between the partition and the top and bottom of the calibration device, the bottom of the calibration device housing is connected to the oil storage cabinet through an inlet and outlet oil pipe, and an oil flow detector and a solenoid valve are arranged on the inlet and outlet oil pipe; a control system is also arranged on the outside of the transformer.

[0005] However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the present application discovered that the above technology has at least the following technical problems: at present, although the monitoring technology of portable air respirators is constantly improving, portable air respirators still face problems of safety, performance reliability and low maintenance efficiency, resulting in low equipment maintenance efficiency and possible lack of real-time understanding of the status of the portable air respirator, thereby creating a risk of misuse. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a portable air respirator monitoring method and system based on big data, which can effectively solve the problems involved in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a portable air respirator monitoring method and system based on big data, including monitoring and collecting the external environmental conditions of the portable air respirator and analyzing them, obtaining the analysis results of the external environmental conditions of the portable air respirator and issuing an early warning.

[0008] The performance of the portable air respirator is tested and monitored in a performance test environment, the performance test parameters of the portable air respirator are obtained, and the comprehensive performance index of the portable air respirator is obtained through analysis.

[0009] Provide feedback on the performance of the portable air respirator based on the comprehensive performance index of the portable air respirator.

[0010] The monitoring collects and analyzes the external environmental conditions of the portable air respirator, obtains the analysis results of the external environmental conditions of the portable air respirator and issues an early warning. The specific analysis process is as follows:

[0011] Arrange a number of monitoring time periods, and monitor and collect the external environmental conditions of the portable air respirator in each monitoring time period, wherein the external environmental conditions of the air respirator include external atmospheric pressure, total concentration of pollutants in the air, and light intensity, and obtain the external environmental monitoring impact value of the portable air respirator in each monitoring time period after processing.

[0012] According to the external environment monitoring impact value of the portable air respirator in each monitoring time period, it is compared with the set external environment monitoring impact threshold. If the external environment monitoring impact value of the portable air respirator in a certain monitoring time period is higher than or equal to the external environment monitoring impact threshold, the monitoring time period is marked as an abnormal monitoring time period. In this way, each abnormal monitoring time period is traversed as the external environment condition analysis result of the portable air respirator, and an early warning is issued.

[0013] The performance comprehensive index of the portable air respirator is specifically analyzed under the following conditions:

[0014] ;

[0015] In the formula, Indicates the comprehensive performance index of portable air respirator. Indicates the first stable performance characterization value inside the gas cylinder of a portable air breathing apparatus. Indicates the second stable performance characterization value inside the gas cylinder of the portable air breathing apparatus. Indicates the weight factor corresponding to the first stable characterization value of the internal performance of the gas cylinder, Indicates the weight factor corresponding to the second performance stability characterization value inside the gas cylinder.

[0016] The specific analysis conditions of the external environment monitoring impact value of the portable air respirator in each monitoring time period are:

[0017] ;

[0018] In the formula, represents the external environment monitoring impact value of the portable air respirator in the i-th monitoring period, represents the external atmospheric pressure of the portable air respirator during the i-th monitoring period, represents the total concentration of pollutants in the air during the i-th monitoring period, represents the light intensity in the i-th monitoring time period, Indicates the set reference external atmospheric pressure, Indicates the total concentration of reference pollutants. Indicates the set reference light intensity. Indicates the correction factor corresponding to the set external atmospheric pressure, Indicates the correction factor corresponding to the set total pollutant concentration, It indicates the correction factor corresponding to the set light intensity, i indicates the number of each monitoring time period, , n represents the total number of monitoring time periods.

[0019] Furthermore, the external environment monitoring impact value of the portable air respirator in each monitoring time period is obtained by analyzing the external environment conditions of the portable air respirator, and is used to quantify the degree of influence of the external environment on the performance and safety of use of the respirator in each monitoring time period.

[0020] Furthermore, the performance test parameters of the portable air respirator include the internal pressure of the gas cylinder, the oxygen concentration inside the gas cylinder, the carbon dioxide concentration inside the gas cylinder, and the air flow rate inside the gas cylinder.

[0021] Furthermore, the analysis obtains a comprehensive performance index of the portable air respirator, and the specific analysis process is: in each monitoring time period, the internal pressure of the gas cylinder of the portable air respirator and the air flow rate inside the gas cylinder are counted at each moment, and the first performance stability characterization value inside the gas cylinder of the portable air respirator is obtained after processing.

[0022] The oxygen concentration inside the gas cylinder of the portable air respirator and the carbon dioxide concentration inside the gas cylinder at each moment in each monitoring time period are counted, and the second performance stability characterization value inside the gas cylinder of the portable air respirator is obtained after processing.

[0023] According to the first stable performance characterization value inside the gas cylinder of the portable air breathing apparatus and the second stable performance characterization value inside the gas cylinder of the portable air breathing apparatus, a comprehensive performance index of the portable air breathing apparatus is obtained by integration.

[0024] Furthermore, the comprehensive performance index of the portable air respirator is an analysis of performance test parameters of the portable air respirator in a performance test environment, and is used to quantify the overall performance and reliability of the portable air respirator.

[0025] Furthermore, the feedback prompt on the performance of the portable air respirator is specifically performed as follows: based on the comprehensive performance index of the portable air respirator, the performance index is compared with a set comprehensive performance threshold of the portable air respirator; if the comprehensive performance index of the portable air respirator is lower than or equal to the comprehensive performance threshold of the portable air respirator, feedback prompt is performed.

[0026] Furthermore, the first performance stability characterization value inside the gas cylinder of the portable air respirator is specifically analyzed under the following conditions:

[0027] ;

[0028] In the formula, Indicates the first stable performance value inside the gas cylinder of a portable air respirator. represents the internal pressure of the gas cylinder of the portable air breathing apparatus at the jth moment in the i-th monitoring period, represents the air flow rate inside the cylinder of the portable air respirator at the jth moment in the i-th monitoring period, represents the internal pressure of the gas cylinder of the portable air breathing apparatus at the j-1th moment in the i-th monitoring period, represents the air flow rate inside the cylinder of the portable air respirator at the j-1th moment in the i-th monitoring period, Indicates the set reference pressure change value, Indicates the set reference air velocity change value, Indicates the correction factor corresponding to the set internal pressure of the gas cylinder, It indicates the correction factor corresponding to the set air velocity, i indicates the number of each monitoring time period, , n represents the total number of monitoring time periods, j represents the number of each moment, , m represents the total number of moments.

[0029] The second aspect of the present invention also provides a portable air respirator monitoring system based on big data, including: an external environmental condition analysis module, which is used to monitor and collect the external environmental conditions of the portable air respirator and analyze them, obtain the external environmental condition analysis results of the portable air respirator and issue an early warning.

[0030] The performance analysis module of the portable air respirator is used to perform performance testing and monitoring on the portable air respirator in a performance testing environment, obtain the performance test parameters of the portable air respirator, and analyze and obtain the comprehensive performance index of the portable air respirator.

[0031] The feedback prompt module is used to provide feedback prompts on the performance of the portable air respirator according to the comprehensive performance index of the portable air respirator.

[0032] The present invention has the following beneficial effects:

[0033] (1) The present invention provides a portable air respirator monitoring method based on big data. First, the external environment data of the portable air respirator is monitored and collected and analyzed to obtain the external environment monitoring impact value of the portable air respirator in each monitoring time period and issue an early warning; at the same time, the performance test and monitoring are performed in a performance test environment, and the performance test parameters are obtained and analyzed to obtain a comprehensive performance index, which can comprehensively evaluate the appearance of the respirator. Detailed feedback prompts are generated to help discover potential problems of the equipment in advance, ensure the safety and effective operation of the equipment, and provide a scientific basis for subsequent maintenance and improvement, which can effectively protect the safety and health of users in work and emergency environments;

[0034] (2) The present invention can deeply evaluate the impact patterns of different external environmental conditions on the portable air respirator by obtaining the external environmental monitoring impact values ​​of the portable air respirator in each monitoring time period, thereby realizing timely identification and early warning of abnormal situations, improving the safety and reliability of the air respirator during use, and providing managers and users with real-time environmental impact analysis to help them make more scientific and effective decisions, thereby ensuring the reliable operation of the air respirator in various working environments and protecting the health of users;

[0035] (3) The present invention obtains a comprehensive performance index of a portable air respirator, combines the effects of multiple factors such as flow rate and temperature on the performance of the respirator, and can fully understand the performance of the device under different working conditions through comprehensive data evaluation and analysis, which can help to timely discover and diagnose performance problems of the portable air respirator, such as pressure changes, air flow velocity stability and gas concentration changes. It also provides a scientific basis for the safe use and maintenance of the portable air respirator, improves the reliability and efficiency of the portable air respirator, and helps to ensure its safe application in various working environments;

[0036] (4) The present invention can further identify the possible appearance damage or performance degradation of the portable air respirator in a timely manner through the quantitative evaluation of the appearance characterization value of the portable air respirator and the comprehensive performance index of the portable air respirator, and help users to maintain a high degree of vigilance in the safety and effectiveness of the portable air respirator. It not only improves the management efficiency of the portable air respirator, but also enhances the user's ability to understand the status of the portable air respirator in real time, effectively reducing potential safety risks and operational inconveniences. Through timely feedback prompts, it helps the reliability and durability of the portable air respirator under various working conditions;

[0037] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the method flow of the present invention;

[0039] Figure 2 The performance comprehensive index curve of the portable air respirator provided by the present invention;

[0040] Figure 3 This is a schematic diagram of the connection of the system modules of the present invention.

[0041] in, Figure 2 The legends a, b, and c are respectively three relationship curves of the comprehensive performance index of the portable air respirator provided by the present invention, a is the comprehensive performance index curve of the portable air respirator when the second performance stability characterization value inside the gas cylinder of the portable air respirator is 0.73, b is the comprehensive performance index curve of the portable air respirator when the second performance stability characterization value inside the gas cylinder of the portable air respirator is 0.85, and c is the comprehensive performance index curve of the portable air respirator when the second performance stability characterization value inside the gas cylinder of the portable air respirator is 1.56. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] See also Figure 1 As shown, an embodiment of the present invention provides a technical solution: a portable air respirator monitoring method and system based on big data, including monitoring and collecting the external environmental conditions of the portable air respirator and analyzing them, obtaining the analysis results of the external environmental conditions of the portable air respirator and issuing an early warning.

[0045] The performance of the portable air respirator is tested and monitored in a performance test environment, the performance test parameters of the portable air respirator are obtained, and the comprehensive performance index of the portable air respirator is obtained through analysis.

[0046] Provide feedback on the performance of the portable air respirator based on the comprehensive performance index of the portable air respirator.

[0047] Specifically, the external environmental conditions of the portable air respirator are monitored and collected and analyzed, the analysis results of the external environmental conditions of the portable air respirator are obtained and an early warning is issued. The specific analysis process is: arrange several monitoring time periods, monitor and collect the external environmental conditions of the portable air respirator in each monitoring time period, wherein the external environmental conditions of the air respirator include external atmospheric pressure, total concentration of pollutants in the air and light intensity, and the external environmental monitoring impact value of the portable air respirator in each monitoring time period is obtained after processing.

[0048] In a specific embodiment, the correction factor corresponding to the external atmospheric pressure ranges from 0 to 1. The correction factor corresponding to the external atmospheric pressure is extracted from a cloud database. A mapping set that comprehensively evaluates the impact of the external atmospheric pressure on the air tightness, ventilation efficiency, and filtration efficiency of a portable air respirator can be constructed through historical air external atmospheric pressure monitoring data and expert evaluation. The real-time external atmospheric pressure is input to obtain the correction factor corresponding to the external atmospheric pressure from the mapping set.

[0049] In a specific embodiment, the correction factor corresponding to the total pollutant concentration ranges from 0 to 1. The correction factor corresponding to the total pollutant concentration is extracted from a cloud database. A mapping set that comprehensively evaluates the impact of the total pollutant concentration on the filtration efficiency, ventilation efficiency, and pollutant entry amount of a portable air respirator can be constructed through historical air pollutant total concentration monitoring data and expert evaluation. The real-time total pollutant concentration is input to obtain the correction factor corresponding to the corresponding total pollutant concentration from the mapping set.

[0050] In a specific embodiment, the correction factor corresponding to the light intensity ranges from 0 to 1. The correction factor corresponding to the light intensity is extracted from a cloud database. A mapping set that comprehensively evaluates the impact of light intensity on the transmittance and field of view clarity of a portable air respirator can be constructed through historical light intensity monitoring data and expert evaluation. The real-time light intensity is input to obtain the corresponding correction factor corresponding to the light intensity from the mapping set.

[0051] According to the external environment monitoring impact value of the portable air respirator in each monitoring time period, it is compared with the set external environment monitoring impact threshold. If the external environment monitoring impact value of the portable air respirator in a certain monitoring time period is higher than or equal to the external environment monitoring impact threshold, the monitoring time period is marked as an abnormal monitoring time period. Thus, each abnormal monitoring time period is traversed to obtain the external environment condition analysis result of the portable air respirator, and an early warning is issued. It should be noted that the external environment monitoring impact threshold is based on the existing monitoring experimental data in the database, and the portable air respirator is analyzed under different external environmental conditions, including external atmospheric pressure, total concentration of pollutants in the air, and light intensity. The critical point value of each environmental factor that has a negative impact on the performance of the respirator is found, and the corresponding weight coefficient is set. The critical point value of each external environmental factor is multiplied by the corresponding weight coefficient and then added. Then, on this basis, a safety margin is added, such as 10%-50%, and the external environment monitoring impact threshold is finally obtained.

[0052] Specifically, the external environment monitoring impact value of the portable air respirator in each monitoring time period is obtained by analyzing the external environment conditions of the portable air respirator, and is used to quantify the impact of the external environment on the performance and safety of use of the respirator in each monitoring time period.

[0053] Specifically, the performance test parameters of the portable air respirator include the internal pressure of the gas cylinder, the oxygen concentration inside the gas cylinder, the carbon dioxide concentration inside the gas cylinder, and the air flow rate inside the gas cylinder.

[0054] Specifically, the comprehensive performance index of the portable air respirator is obtained by analysis. The specific analysis process is: in each monitoring time period, the internal pressure of the gas cylinder of the portable air respirator and the air flow rate inside the gas cylinder are counted at each moment, and the first performance stability characterization value inside the gas cylinder of the portable air respirator is obtained after processing.

[0055] It should be noted that during the actual use of the respirator, the breathing rate and flow of the breather will constantly change, such as from shallow breathing to deep breathing, from low flow to high flow. These changes will affect the working state of the pressure reducer. The main function of the pressure reducer is to adjust the high-pressure gas to a low-pressure gas suitable for breathing, and to maintain a stable output pressure under different breathing flows. By testing the internal pressure of the gas cylinder at different times, it can help ensure that the pressure reducer can provide stable pressure under various breathing conditions, ensuring smooth breathing for the user.

[0056] It should be noted that analyzing performance tests at different time periods can help more accurately identify potential problems that may exist in the pressure reducer of the respirator under high or low loads.

[0057] The oxygen concentration inside the gas cylinder of the portable air respirator and the carbon dioxide concentration inside the gas cylinder at each moment in each monitoring time period are counted, and the second performance stability characterization value inside the gas cylinder of the portable air respirator is obtained after processing.

[0058] It should be noted that the specific analysis conditions for the second performance stability characterization value inside the gas cylinder of the portable air respirator are:

[0059] ;

[0060] In the formula, Indicates the second stable performance characterization value inside the gas cylinder of the portable air breathing apparatus. represents the oxygen concentration inside the cylinder of the portable air respirator at the jth moment in the i-th monitoring period, represents the carbon dioxide concentration inside the cylinder of the portable air respirator at the jth moment in the i-th monitoring period, represents the oxygen concentration of the portable air respirator at the j-1th moment in the i-th monitoring period, represents the carbon dioxide concentration inside the gas cylinder of the portable air respirator at the j-1th moment in the i-th monitoring period, Indicates the set reference oxygen concentration change value. Indicates the set reference carbon dioxide concentration change value, Indicates the correction factor corresponding to the set oxygen concentration. It indicates the correction factor corresponding to the set carbon dioxide concentration, i indicates the number of each monitoring time period, , n represents the total number of monitoring time periods, j represents the number of each moment, , m represents the total number of moments, and e represents a natural constant.

[0061] It should be noted that a portable or fixed oxygen analyzer can be connected to the air cylinder of the air respirator to continuously measure the oxygen concentration and store and analyze the changes in oxygen concentration over time.

[0062] It should be noted that fixed oxygen analyzers can be connected to gas cylinders to perform regular or continuous oxygen concentration measurements. These devices usually have data logging capabilities that can store and analyze changes in oxygen concentration over time. Fixed carbon dioxide analyzers are used to perform regular or continuous measurements of carbon dioxide concentration inside gas cylinders to monitor changes in carbon dioxide concentration over time.

[0063] It should be noted that the correction factor corresponding to the oxygen concentration ranges from 0 to 1. The correction factor corresponding to the oxygen concentration is extracted from the cloud database. Through the historical internal oxygen concentration monitoring data of the air respirator and expert evaluation, a mapping set that comprehensively evaluates the impact of oxygen concentration on the internal gas supply of the portable air respirator can be constructed. The real-time oxygen concentration is input and the corresponding correction factor corresponding to the oxygen concentration is obtained from the mapping set.

[0064] It should be noted that the correction factor corresponding to the carbon dioxide concentration ranges from 0 to 1. The correction factor corresponding to the carbon dioxide concentration is extracted from the cloud database. The carbon dioxide concentration data measured under different conditions can be recorded through the historical internal carbon dioxide concentration monitoring of the air respirator. At the same time, the corresponding temperature and pressure values ​​and expert evaluation can be recorded to construct a mapping set that comprehensively evaluates the impact of carbon dioxide concentration on the internal gas supply of the portable air respirator. The real-time carbon dioxide concentration is input to obtain the corresponding correction factor corresponding to the carbon dioxide concentration from the mapping set.

[0065] According to the first stable performance characterization value inside the gas cylinder of the portable air breathing apparatus and the second stable performance characterization value inside the gas cylinder of the portable air breathing apparatus, a comprehensive performance index of the portable air breathing apparatus is obtained by integration.

[0066] Specifically, the comprehensive performance index of the portable air respirator is an analysis of the performance test parameters of the portable air respirator in a performance test environment, and is used to quantify the overall performance and reliability of the portable air respirator.

[0067] Specifically, feedback is provided on the performance of the portable air respirator. The specific process is: based on the comprehensive performance index of the portable air respirator, it is compared with the set comprehensive performance threshold of the portable air respirator. If the comprehensive performance index of the portable air respirator is lower than or equal to the comprehensive performance threshold of the portable air respirator, feedback is provided.

[0068] Specifically, the first performance stability characterization value inside the gas cylinder of the portable air respirator, the specific analysis conditions are:

[0069] ;

[0070] In the formula, Indicates the first stable performance characterization value inside the gas cylinder of a portable air breathing apparatus. represents the internal pressure of the gas cylinder of the portable air breathing apparatus at the jth moment in the i-th monitoring period, represents the air flow rate inside the cylinder of the portable air respirator at the jth moment in the i-th monitoring period, represents the internal pressure of the gas cylinder of the portable air breathing apparatus at the j-1th moment in the ith monitoring period, represents the air flow rate inside the cylinder of the portable air respirator at the j-1th moment in the ith monitoring period, Indicates the set reference pressure change value, Indicates the set reference air velocity change value, Indicates the correction factor corresponding to the set internal pressure of the gas cylinder, It indicates the correction factor corresponding to the set air velocity, i indicates the number of each monitoring time period, , n represents the total number of monitoring time periods, j represents the number of each moment, , m represents the total number of moments.

[0071] It should be noted that the internal pressure of the gas cylinder of a portable air respirator is measured using a pressure sensor specially designed for high-pressure gas, such as a piezoelectric pressure sensor, and converted into an electrical signal for reading.

[0072] It should be noted that the air flow rate inside the gas cylinder of the portable air respirator is measured by using a flow meter to measure the air flow rate output from the gas cylinder. The flow meter usually determines the flow rate by measuring the volume or mass of the fluid passing through.

[0073] It should be noted that monitoring the internal pressure and air flow rate of a portable air respirator helps to promptly detect and resolve possible problems with the respirator, such as depletion of the gas cylinder or unstable airflow, thereby ensuring the safety of the user.

[0074] In a specific embodiment, the correction factor corresponding to the internal pressure of the gas cylinder ranges from 0 to 1. The correction factor corresponding to the internal pressure of the gas cylinder is extracted from a cloud database. A mapping set that comprehensively evaluates the impact of pressure on the internal gas supply of a portable air respirator at different times can be constructed through historical internal pressure monitoring data of the air respirator and expert evaluation. The real-time internal pressure of the gas cylinder is input to obtain the correction factor corresponding to the internal pressure of the gas cylinder from the mapping set.

[0075] In a specific embodiment, the correction factor corresponding to the air flow rate ranges from 0 to 1. The correction factor corresponding to the air flow rate is extracted from a cloud database. A mapping set that comprehensively evaluates the effects of air flow rate on pipe friction, flow turbulence properties, and air density changes can be constructed through historical air respirator internal air flow rate monitoring data and expert evaluation. The real-time air flow rate is input to obtain the corresponding correction factor corresponding to the air flow rate from the mapping set.

[0076] Specifically, the comprehensive performance index of portable air respirators is analyzed under the following conditions:

[0077] ;

[0078] In the formula, Indicates the comprehensive performance index of portable air respirator. Indicates the first stable performance value inside the gas cylinder of a portable air respirator. Indicates the second stable performance characterization value inside the gas cylinder of the portable air breathing apparatus. Indicates the weight factor corresponding to the first stable characterization value of the internal performance of the gas cylinder, Indicates the weight factor corresponding to the second performance stability characterization value inside the gas cylinder.

[0079] In a specific embodiment, the weight factor corresponding to the first stable performance characterization value inside the gas cylinder and the weight factor corresponding to the second stable performance characterization value inside the gas cylinder are extracted from a database, and the value range of the weight factor corresponding to the first stable performance characterization value inside the gas cylinder and the weight factor corresponding to the second stable performance characterization value inside the gas cylinder are between 0 and 1. Through historical data, the relationship between the internal pressure of the gas cylinder, the air flow rate inside the gas cylinder, the oxygen concentration inside the gas cylinder, and the carbon dioxide concentration inside the gas cylinder is fitted to obtain a fitting curve, and the weight factor corresponding to the first stable performance characterization value inside the gas cylinder and the weight factor corresponding to the second stable performance characterization value inside the gas cylinder are determined according to the fitting curve. The real-time internal pressure of the gas cylinder, the air flow rate inside the gas cylinder, the oxygen concentration inside the gas cylinder, and the carbon dioxide concentration inside the gas cylinder in each monitoring time period are substituted into the fitting curve to obtain the corresponding weight factor corresponding to the first stable performance characterization value inside the gas cylinder and the weight factor corresponding to the second stable performance characterization value inside the gas cylinder.

[0080] As shown in Table 1, Table 1 is an example data of the comprehensive performance index of the portable air respirator, which lists the first stable performance characterization value inside the gas cylinder of the portable air respirator and the second stable performance characterization value inside the gas cylinder of the portable air respirator;

[0081] Table 1 Example data of comprehensive performance index of portable air respirator:

[0082] ;

[0083] As shown in Table 1, in a specific embodiment, if the weight factor corresponding to the first stable performance characterization value inside the gas cylinder is 0.54, the weight factor corresponding to the second stable performance characterization value inside the gas cylinder is 0.46. The comprehensive performance index of the portable air respirator is jointly determined by the first stable performance characterization value inside the gas cylinder of the portable air respirator, the second stable performance characterization value inside the gas cylinder of the portable air respirator, etc. As the first stable performance characterization value inside the gas cylinder of the portable air respirator increases, the comprehensive performance index of the portable air respirator will also increase accordingly.

[0084] like Figure 2 As shown, Figure 2 is a performance comprehensive index curve of a portable air respirator, which represents the performance comprehensive index curve of a portable air respirator corresponding to the second stable performance characterization value inside the gas cylinder of different portable air respirators, wherein the x-axis represents the first stable performance characterization value inside the gas cylinder of the portable air respirator, and the y-axis represents the performance comprehensive index of the portable air respirator. Three different groups of example parameters are defined in the figure, corresponding to different situations of the three curves, respectively represented by solid lines, dashed lines and dot-dash lines, and the corresponding curve labels are a, b, and c, respectively. When the second stable performance characterization value inside the gas cylinder of the portable air respirator is 0.73, a schematic diagram of the relationship between the first stable performance characterization value inside the gas cylinder of the portable air respirator and the performance comprehensive index of the portable air respirator is shown in curve a. When the second stable performance characterization value inside the gas cylinder of the portable air respirator is 0.85, a schematic diagram of the relationship between the first stable performance characterization value inside the gas cylinder of the portable air respirator and the performance comprehensive index of the portable air respirator is shown in curve b. When the second stable performance characterization value inside the gas cylinder of the portable air respirator is 1.56, a schematic diagram of the relationship between the first stable performance characterization value inside the gas cylinder of the portable air respirator and the performance comprehensive index of the portable air respirator is shown in curve c. And as the first stable performance characterization value inside the gas cylinder of the portable air respirator increases, the overall height of the comprehensive performance index of the portable air respirator will increase accordingly, which reflects the influence of the change of the first stable performance characterization value inside the gas cylinder of the air respirator on the comprehensive performance index of the portable air respirator.

[0085] like Figure 3 As shown, the second aspect of the present invention also provides a portable air respirator monitoring system based on big data, including: an external environmental condition analysis module, used to monitor and collect the external environmental conditions of the portable air respirator and analyze them, obtain the external environmental condition analysis results of the portable air respirator and issue an early warning.

[0086] The performance analysis module of the portable air respirator is used to perform performance testing and monitoring of the portable air respirator in a performance testing environment, obtain the performance test parameters of the portable air respirator, and analyze and obtain the comprehensive performance index of the portable air respirator.

[0087] The feedback prompt module is used to provide feedback prompts on the performance of the portable air respirator according to the comprehensive performance index of the portable air respirator.

[0088] It should be noted that a portable air respirator monitoring system based on big data also includes a cloud database, which is used to store the external environment monitoring influence threshold, the comprehensive performance threshold of the portable air respirator, the reference pressure change value, the reference air flow rate change value, the correction factor corresponding to the internal pressure of the gas cylinder, the correction factor corresponding to the air flow rate, the weight factor corresponding to the first performance stability characterization value inside the gas cylinder, and the weight factor corresponding to the second performance stability characterization value inside the gas cylinder; store the correction factor corresponding to the carbon dioxide concentration, the correction factor corresponding to the oxygen concentration, the reference carbon dioxide concentration change value, the reference oxygen concentration change value, the correction factor corresponding to the light intensity, the reference external atmospheric pressure, the reference total pollutant concentration, the reference light intensity, the correction factor corresponding to the external atmospheric pressure inside the gas cylinder, and the correction factor corresponding to the total pollutant concentration.

[0089] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0090] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A portable air respirator monitoring method based on big data, characterized in that: include: Monitor and collect the external environmental conditions of the portable air respirator and analyze them, obtain the analysis results of the external environmental conditions of the portable air respirator and issue an early warning; Perform performance testing and monitoring on the portable air respirator in a performance testing environment, obtain the performance test parameters of the portable air respirator, and analyze to obtain the comprehensive performance index of the portable air respirator; Provide feedback on the performance of portable air respirators based on their comprehensive performance index; The monitoring collects and analyzes the external environmental conditions of the portable air respirator, obtains the analysis results of the external environmental conditions of the portable air respirator and issues an early warning. The specific analysis process is as follows: Arrange a number of monitoring time periods, monitor and collect the external environmental conditions of the portable air respirator in each monitoring time period, wherein the external environmental conditions of the air respirator include external atmospheric pressure, total concentration of pollutants in the air, and light intensity, and obtain the external environmental monitoring impact value of the portable air respirator in each monitoring time period after processing; According to the external environment monitoring impact value of the portable air respirator in each monitoring time period, it is compared with the set external environment monitoring impact threshold. If the external environment monitoring impact value of the portable air respirator in a certain monitoring time period is higher than or equal to the external environment monitoring impact threshold, the monitoring time period is marked as an abnormal monitoring time period, thereby traversing each abnormal monitoring time period as the external environment condition analysis result of the portable air respirator, and issuing an early warning; The performance comprehensive index of the portable air respirator is specifically analyzed under the following conditions: ； In the formula, Indicates the comprehensive performance index of portable air respirator. Indicates the first stable performance characterization value inside the gas cylinder of a portable air breathing apparatus. Indicates the second stable performance characterization value inside the gas cylinder of the portable air breathing apparatus. Indicates the weight factor corresponding to the first stable characterization value of the internal performance of the gas cylinder, Indicates the weight factor corresponding to the second performance stability characterization value inside the gas cylinder; The specific analysis conditions of the external environment monitoring impact value of the portable air respirator in each monitoring time period are: ； In the formula, represents the external environment monitoring impact value of the portable air respirator in the i-th monitoring period, represents the external atmospheric pressure of the portable air respirator during the i-th monitoring period, represents the total concentration of pollutants in the air during the i-th monitoring period, represents the light intensity in the i-th monitoring time period, Indicates the set reference external atmospheric pressure, Indicates the total concentration of reference pollutants. Indicates the set reference light intensity. Indicates the correction factor corresponding to the set external atmospheric pressure, Indicates the correction factor corresponding to the set total pollutant concentration, It indicates the correction factor corresponding to the set light intensity, i indicates the number of each monitoring time period, , n represents the total number of monitoring time periods; The analysis obtains the comprehensive performance index of the portable air respirator, and the specific analysis process is: In each monitoring time period, the internal pressure of the gas cylinder of the portable air respirator and the air flow rate of the gas cylinder at each moment are counted, and the first performance stability characterization value of the gas cylinder of the portable air respirator is obtained through processing; The oxygen concentration inside the gas cylinder and the carbon dioxide concentration inside the gas cylinder of the portable air respirator at each moment in each monitoring time period are counted, and the second performance stability characterization value inside the gas cylinder of the portable air respirator is obtained through processing; According to the first stable performance characterization value inside the gas cylinder of the portable air breathing apparatus and the second stable performance characterization value inside the gas cylinder of the portable air breathing apparatus, a comprehensive performance index of the portable air breathing apparatus is obtained by integration.

2. A portable air respirator monitoring method based on big data according to claim 1, characterized in that: The external environment monitoring impact value of the portable air respirator in each monitoring time period is obtained by analyzing the external environment conditions of the portable air respirator, and is used to quantify the impact of the external environment on the performance and safety of use of the respirator in each monitoring time period.

3. The portable air respirator monitoring method based on big data according to claim 1 is characterized in that: The performance test parameters of the portable air respirator include the internal pressure of the gas cylinder, the oxygen concentration inside the gas cylinder, the carbon dioxide concentration inside the gas cylinder, and the air flow rate inside the gas cylinder.

4. A portable air respirator monitoring method based on big data according to claim 1, characterized in that: The comprehensive performance index of the portable air respirator is an analysis of the performance test parameters of the portable air respirator in a performance test environment, and is used to quantify the overall performance and reliability of the portable air respirator.

5. The portable air respirator monitoring method based on big data according to claim 1 is characterized in that: The specific process of providing feedback on the performance of the portable air respirator is as follows: According to the comprehensive performance index of the portable air respirator, it is compared with the set comprehensive performance threshold of the portable air respirator. If the comprehensive performance index of the portable air respirator is lower than or equal to the comprehensive performance threshold of the portable air respirator, feedback prompt is given.

6. A portable air respirator monitoring method based on big data according to claim 1, characterized in that: The first stable characterization value of the gas cylinder of the portable air respirator, the specific analysis conditions are: ； In the formula, Indicates the first stable performance characterization value inside the gas cylinder of a portable air breathing apparatus. represents the internal pressure of the gas cylinder of the portable air breathing apparatus at the jth moment in the i-th monitoring period, represents the air flow rate inside the cylinder of the portable air respirator at the jth moment in the i-th monitoring period, represents the internal pressure of the gas cylinder of the portable air breathing apparatus at the j-1th moment in the ith monitoring period, represents the air flow rate inside the cylinder of the portable air respirator at the j-1th moment in the ith monitoring period, Indicates the set reference pressure change value, Indicates the set reference air velocity change value, Indicates the correction factor corresponding to the set internal pressure of the gas cylinder, It indicates the correction factor corresponding to the set air velocity, i indicates the number of each monitoring time period, , n represents the total number of monitoring time periods, j represents the number of each moment, , m represents the total number of moments.

7. A system using the portable air respirator monitoring method based on big data as described in any one of claims 1 to 6, characterized in that: include: An external environment condition analysis module is used to monitor and collect the external environment conditions of the portable air respirator and analyze them, obtain the analysis results of the external environment conditions of the portable air respirator and issue an early warning; The performance analysis module of the portable air respirator is used to perform performance testing and monitoring of the portable air respirator in the performance test environment, obtain the performance test parameters of the portable air respirator, and analyze and obtain the comprehensive performance index of the portable air respirator; The feedback prompt module is used to provide feedback prompts on the performance of the portable air respirator according to the comprehensive performance index of the portable air respirator.

Images