Chemical gas phase risk detection system and method

Abstract

The invention discloses a chemical gas phase risk detection system and method, and belongs to the technical field of gas detection. In order to solve the problems that the identification precision is not high, the risk grade division is not clear and the diffusion condition of chemicals cannot be accurately predicted, the chemical characteristics are comprehensively considered, the risk factor of each sampling point position is calculated, and the risk division can be accurately performed on each sampling point position according to the formulated risk grade division standard and threshold value, so that the risk classification accuracy is improved. A high-risk area can be quickly identified, the diffusion range and the influence degree of chemicals under different risk levels are simulated and predicted by combining environmental factors such as wind speed, wind direction, temperature and humidity in a sampling environment, a scientific basis is provided for formulating countermeasures, potential hazards of chemical accidents to personnel and the environment can be reduced, and the method is suitable for popularization and application. The initial early warning threshold value is dynamically adjusted according to the detection result, the risk assessment and the actual site situation, it is ensured that the early warning system can adapt to the complex and changeable chemical environment, and the early warning accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection, and in particular to a system and method for detecting gas-phase hazard of chemicals. Background Art

[0002] The gas-phase hazard produced by dangerous goods refers to the property that certain dangerous substances can release harmful gases or vapors under specific conditions (such as temperature, pressure, chemical reactions, etc.), thereby posing a threat to human health, the environment and facility safety. Therefore, it is necessary to detect gas-phase dangerous goods in the environment.

[0003] However, there are still the following problems in actual operation: The existing system is slow in identifying chemicals, has low recognition accuracy, often relies on manual intervention, has unclear risk classification, lacks scientific basis for risk classification, often leads to misjudgment, and is unable to effectively identify high-risk areas. It often ignores the impact of environmental factors (such as wind speed, temperature, etc.) during detection and is unable to accurately predict the spread of chemicals. Summary of the invention

[0004] The object of the present invention is to provide a chemical gas phase hazard detection system and method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a chemical gas phase hazard detection system, comprising: Sample collection module for: Set sampling time and flow parameters, collect chemical gas samples from the target environment through a gas sampling device based on the sampling time, and record sampling information, wherein the gas sampling device is set at different points in the sampling environment, and the sampling information includes time, location, sampling point number, and environmental conditions; Sample detection module for: The samples were tested using gas chromatography, mass spectrometry, and infrared spectroscopy instruments; Data acquisition module for: Collecting detection data from the detection instrument in real time during the detection process and storing it in a storage medium; Data analysis module for: Analyze the collected test data, compare it with the chemical database and spectrum library, identify the type and concentration of chemicals, calculate the concentration and relative abundance of chemicals, and output the test results; Risk assessment module for: Based on the test results, chemical properties and on-site conditions of gas phase sample collection, qualitative and quantitative risk assessment is carried out, the gas concentration distribution at different sampling points in the current sampling environment is simulated, and the risk assessment results are output; Alarm warning module, used for: Set alarm and warning thresholds. When the test results exceed the thresholds, the warning signal is automatically triggered. The detailed information of the warning signal includes time, location, chemical type, and concentration; Report generation module for: Generate a complete test report based on the test results and risk assessment results.

[0006] Furthermore, the data analysis module includes: Data pre-processing unit, used for: Receive the raw data transmitted by the data acquisition module, remove invalid and abnormal data, organize the data into a matrix form, and calibrate the data according to the calibration records of the detection instrument; Comparison and identification unit, used for: According to the preprocessed data features, matching chemicals are searched in the chemical database, and the successfully matched chemicals are marked as candidate results, and compared with the standard spectra of the candidate results in the spectrum library, wherein the standard spectra include gas chromatograms, mass spectra, and infrared spectra; According to the comparison results of the candidate results, the types of chemicals are determined and a list of target chemicals is obtained.

[0007] Furthermore, the data analysis module further includes: Concentration and abundance analysis unit, used for: Calculate the actual concentration of each chemical in the target chemical list and the relative abundance of each chemical in the target chemical list in the sample based on the signal intensity in the detection data, the calibration curve and the known chemical concentration; Verify the calculation results and output the calculation results; Result summary output unit, used for: The output results of the comparison and identification unit and the concentration and abundance analysis unit are collected and summarized, and a test result is generated based on the summarized results. The test result includes the type, concentration and relative abundance of the chemical.

[0008] Furthermore, the risk assessment module includes: Risk Factor Assessment Unit, used to: Obtain information on the type, concentration and relative abundance of chemicals from the data analysis module, retrieve chemical information from the chemical database, and analyze the toxicity, flammability and explosive properties of each chemical in the target chemical list; Combining the test results with the chemical characteristics, the risk factor of each sampling point is calculated, the risk factor including the toxicity index and the explosion limit, and the risk factor of each sampling point is output to the subsequent unit of the risk assessment module; Risk level classification unit, used for: Obtaining the risk factor of each sampling point from the risk factor assessment unit, formulating the risk level classification standard and threshold, and classifying the risk of each sampling point into different risk levels according to the risk factor and the level standard, wherein the risk levels include low risk, medium risk and high risk; The risk level of each sampling point is output to the subsequent unit of the risk assessment module.

[0009] Furthermore, the risk assessment module further includes: Impact range simulation unit for: Obtain the risk level of each sampling point from the risk level classification unit, analyze the wind speed, wind direction, temperature, and humidity environmental factors in the sampling environment, and simulate and predict the diffusion range and impact of chemicals in the target chemical list at different risk levels; Output simulation and prediction results to subsequent units of the risk assessment module; Response Development Unit for: Obtain the diffusion range and impact degree of the chemical, as well as the risk level information from the impact range simulation unit, and formulate response measures based on the risk assessment results and the preset measures catalog, including emergency evacuation, isolation of areas, and closure of related facilities; The output results of the risk level classification unit and the impact range simulation unit are collected and summarized, and the risk assessment results are generated based on the summarized results and the response measures. The risk assessment results include risk level, impact range, and response measures.

[0010] Furthermore, the alarm warning module includes: A threshold setting unit, for: Setting initial warning thresholds for different types of chemicals, including concentration thresholds, toxicity index thresholds, and explosion limit thresholds; According to the test results, risk assessment results and actual on-site conditions, the set thresholds are dynamically adjusted. When the concentration of the current chemical is detected to be continuously rising, the warning threshold of the current chemical is lowered; when the concentration of the current chemical is detected to be continuously decreasing, the warning threshold of the current chemical is increased; The set threshold is stored in the system database; Real-time monitoring and comparison unit for: receiving the type, concentration and relative abundance detection results of the chemicals from the data analysis module in real time, and comparing the received detection results with the threshold values ​​stored in the threshold setting unit; According to the comparison results, determine whether the current test results exceed or approach the set threshold. When the test results exceed or approach the threshold, send an early warning instruction, otherwise, continue real-time monitoring.

[0011] Furthermore, the alarm warning module further includes: Alarm triggering unit for: When receiving the warning instruction, trigger the alarm; Integrate the detection data, sampling information, chemical information and threshold information when the alarm is triggered to form complete alarm information, and output the integrated alarm information to the system user; Recording feedback unit for: Record the time, location, chemical type, concentration, and trigger threshold information of each alarm trigger; A feedback portal is generated, and the feedback portal is used to receive alarm system usage conditions collected through user feedback and on-site observation, wherein the alarm system usage conditions include false alarms and missed alarms.

[0012] Furthermore, the alarm warning module further includes: A real-time monitoring module, used to monitor the generation response time of the feedback entry in real time; A duration comparison module, used to compare the generated response duration with a preset response duration threshold; A generation time calling module, used for calling the generation time corresponding to each feedback entry generation when the generation response time exceeds a preset response time threshold; A duration coefficient acquisition module, used to set the duration coefficient of the feedback entry using the generated duration; The duration coefficient is obtained by the following formula: ; Among them, S represents the duration coefficient; n represents the total number of times the feedback entry is generated; T si represents the generation time corresponding to the generation of the i-th feedback entry; T smax Indicates the maximum generation time corresponding to n feedback entry generation; T y Indicates the preset response time threshold; T x Indicates the generation response time corresponding to exceeding the preset response time threshold; The entry duration setting module is used to set the entry duration corresponding to the currently generated feedback entry using the duration coefficient.

[0013] Furthermore, the entry duration setting module includes: The duration coefficient retrieval time is used to retrieve the duration coefficient; A generation time interval acquisition module is used to retrieve the generation time interval corresponding to the alarm trigger information; wherein the alarm trigger information includes the alarm triggering time, location, chemical type, concentration and triggering threshold information; A time interval coefficient acquisition module, used to acquire a time interval coefficient using the generation time interval corresponding to the alarm trigger information; The time interval coefficient is obtained by the following formula: ; Where G represents the time interval coefficient; m represents the total number of time intervals corresponding to the alarm trigger information; T gi Indicates the time length value corresponding to the i-th generation time interval; T gb represents the standard deviation of the time length corresponding to m generation time intervals; T sb represents the standard deviation of the generation time corresponding to the generation of n feedback entries; T smax Indicates the maximum generation time corresponding to n feedback entry generation; T gmax represents the maximum difference in the time lengths corresponding to the m generation time intervals; T xb It represents the standard deviation of the response time corresponding to the generation of n feedback entries; An entry duration acquisition module, used to acquire the entry duration using the time interval coefficient and the duration coefficient; The duration of the entry is obtained by the following formula: ; Among them, T cx Indicates the duration of the entrance; T0 indicates the preset reference value of the duration of the entrance; G indicates the time interval coefficient; S indicates the duration coefficient; G x Indicates the preset time interval coefficient reference value; The entry persistence and cancellation control module is used to control the duration of the current feedback entry after it is generated, and to cancel the currently generated feedback entry at the end of the entry duration.

[0014] Furthermore, a method for detecting gas-phase hazard of chemicals is applied to the above-mentioned gas-phase hazard detection system of chemicals, comprising the following steps: Step 1: Sample collection: Use gas sampling equipment to collect chemical gas samples from different points in the target environment and record the sampling information; Step 2: Sample detection data collection, using gas chromatography, mass spectrometry, and infrared spectrometry instruments to detect gas phase samples, and collect detection data from the detection instruments in real time; Step 3: Chemical identification and analysis: analyze the collected test data, compare them with the chemical database and spectrum library, identify the types of chemicals, calculate the concentration and relative abundance of chemicals, and output the test results; Step 4: Risk assessment simulation: Based on the test results, chemical properties and sampling environment, simulate the gas concentration distribution at different sampling points in the current sampling environment, evaluate the toxicity, flammability and explosiveness of chemicals, and classify risk levels, simulate and predict the diffusion range and impact of chemicals at different risk levels; Step 5: Real-time monitoring, setting initial warning thresholds for different types of chemicals, dynamically adjusting warning thresholds based on test results and risk assessment results, real-time monitoring of test results, and comparing them with the set thresholds to determine whether the current test results exceed or are close to the set thresholds; Step 6: Alarm triggering. When the test results exceed or approach the set threshold, the alarm is triggered and complete alarm information is output, recording the time, location, chemical type, concentration, and trigger threshold information of each alarm triggering, and generating a complete test report.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can quickly query matching chemicals in a chemical database based on the preprocessed data features, thereby improving the recognition efficiency of chemicals. By comparing with standard spectra in the spectrum library, the types of chemicals can be further confirmed to ensure the accuracy of the recognition results. According to the signal intensity, calibration curve and known chemical concentration in the detection data, the actual concentration of each chemical in the target chemical list is accurately calculated. At the same time, the relative abundance of each chemical in the sample is calculated, which provides an important basis for evaluating the hazard of the chemical. The output results of the comparison and identification unit and the concentration abundance analysis unit are collected and summarized to generate detection results including the type, concentration and relative abundance of the chemical, which is helpful to fully understand the type and distribution of chemicals in the sample, and provide a scientific basis for subsequent risk assessment and formulation of response measures.

[0016] 2. The present invention comprehensively considers the type, concentration, relative abundance, toxicity, flammability, explosiveness and other characteristics of chemicals, calculates the risk factor of each sampling point, and provides comprehensive and accurate data support for subsequent risk assessment. According to the established risk level classification standards and thresholds, the risk of each sampling point can be accurately divided into low risk, medium risk or high risk levels, which helps to quickly identify high-risk areas and take priority response measures. In combination with environmental factors such as wind speed, wind direction, temperature, humidity and other environmental factors in the sampling environment, the diffusion range and impact of chemicals at different risk levels are simulated and predicted, providing a scientific basis for formulating response measures, helping to reduce the potential hazards of chemical accidents to personnel and the environment. According to the risk assessment results and the preset measures catalog, emergency evacuation, isolation of areas, closure of related facilities and other response measures are formulated, which helps to quickly control the development of chemical accidents and reduce losses.

[0017] 3. The threshold setting unit of the present invention can set initial warning thresholds for different types of chemicals, and dynamically adjust according to the test results, risk assessment and actual on-site conditions, ensuring that the early warning system can adapt to the complex and changeable chemical environment, improve the accuracy of the early warning, receive the test results of the chemicals in real time, and compare them with the set thresholds. Once an abnormality is detected, a warning instruction is immediately sent, ensuring that the system can respond quickly to potential chemical hazards and effectively shorten the response time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the chemical gas phase hazard detection system module of the present invention; Figure 2 The figure is a schematic flow chart of the method for detecting gas phase hazard of chemicals of the present invention. DETAILED DESCRIPTION

[0019] 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.

[0020] In order to solve the technical problems that the existing system is slow in chemical identification, has low identification accuracy, often relies on manual intervention, has unclear risk classification, lacks scientific basis in risk classification, often leads to misjudgment, cannot effectively identify high-risk areas, often ignores the influence of environmental factors (such as wind speed, temperature, etc.) during detection, and cannot accurately predict the diffusion of chemicals, please refer to Figure 1-2 , the present invention provides the following technical solutions: A chemical gas phase hazard detection system, comprising: Sample collection module for: Set sampling time and flow parameters, collect chemical gas samples from the target environment through a gas sampling device based on the sampling time, and record sampling information, wherein the gas sampling device is set at different points in the sampling environment, and the sampling information includes time, location, sampling point number, and environmental conditions; Sample detection module for: The samples were tested using gas chromatography, mass spectrometry, and infrared spectroscopy instruments; Data acquisition module for: Collecting detection data from the detection instrument in real time during the detection process and storing it in a storage medium; Data analysis module for: Analyze the collected test data, compare it with the chemical database and spectrum library, identify the type and concentration of chemicals, calculate the concentration and relative abundance of chemicals, and output the test results; Risk assessment module for: Based on the test results, chemical properties and on-site conditions of gas phase sample collection, qualitative and quantitative risk assessment is carried out, the gas concentration distribution at different sampling points in the current sampling environment is simulated, and the risk assessment results are output; Alarm warning module, used for: Set alarm and warning thresholds. When the test results exceed the thresholds, the warning signal is automatically triggered. The detailed information of the warning signal includes time, location, chemical type, and concentration; Report generation module for: Generate a complete test report based on the test results and risk assessment results.

[0021] In the above embodiment, by comparing the chemical database and the atlas library, the type and concentration of chemicals can be intelligently identified, the concentration and relative abundance of chemicals can be calculated, and accurate test results can be output. Based on the test results, chemical characteristics and sampling environment conditions, qualitative and quantitative risk assessments are performed, and the gas concentration distribution at different sampling points in the current sampling environment is simulated to provide a scientific basis for safety management. Alarm and warning thresholds are set. When the test results exceed the threshold, the warning signal is automatically triggered to promptly remind relevant personnel to take countermeasures to avoid accidents or their expansion. The entire system can significantly improve the safety management level of chemical gas phase hazards through intelligent and automated detection, evaluation, warning and report generation processes. The system can provide timely and accurate information support, which is helpful for enterprises to establish sound safety management systems and emergency plans to ensure the safety of personnel and property.

[0022] Data analysis modules, including: Data pre-processing unit, used for: Receive the raw data transmitted by the data acquisition module, remove invalid and abnormal data, organize the data into a matrix form, and calibrate the data according to the calibration records of the detection instrument; Comparison and identification unit, used for: According to the preprocessed data features, matching chemicals are searched in the chemical database, and the successfully matched chemicals are marked as candidate results, and compared with the standard spectra of the candidate results in the spectrum library, wherein the standard spectra include gas chromatograms, mass spectra, and infrared spectra; According to the comparison results of the candidate results, the types of chemicals are determined and a list of target chemicals is obtained; Concentration and abundance analysis unit, used for: Calculate the actual concentration of each chemical in the target chemical list and the relative abundance of each chemical in the target chemical list in the sample based on the signal intensity in the detection data, the calibration curve and the known chemical concentration; Verify the calculation results and output the calculation results; Result summary output unit, used for: The output results of the comparison and identification unit and the concentration and abundance analysis unit are collected and summarized, and a test result is generated based on the summarized results. The test result includes the type, concentration and relative abundance of the chemical.

[0023] In the above embodiment, based on the pre-processed data features, matching chemicals are quickly queried in the chemical database, thereby improving the efficiency of chemical identification. By comparing with the standard spectra in the spectrum library, the type of chemical can be further confirmed to ensure the accuracy of the identification result. According to the signal intensity, calibration curve and known chemical concentration in the detection data, the actual concentration of each chemical in the target chemical list is accurately calculated. At the same time, the relative abundance of each chemical in the sample is calculated, which provides an important basis for assessing the hazard of the chemical. The output results of the comparison and identification unit and the concentration abundance analysis unit are collected and summarized to generate detection results including the type, concentration and relative abundance of the chemical, which helps relevant personnel to fully understand the type and distribution of chemicals in the sample, and provides a scientific basis for subsequent risk assessment and formulation of response measures.

[0024] Risk assessment module, including: Risk Factor Assessment Unit, used to: Obtain information on the type, concentration and relative abundance of chemicals from the data analysis module, retrieve chemical information from the chemical database, and analyze the toxicity, flammability and explosive properties of each chemical in the target chemical list; Combining the test results with the chemical characteristics, the risk factor of each sampling point is calculated, the risk factor including the toxicity index and the explosion limit, and the risk factor of each sampling point is output to the subsequent unit of the risk assessment module; Risk level classification unit, used for: Obtaining the risk factor of each sampling point from the risk factor assessment unit, formulating the risk level classification standard and threshold, and classifying the risk of each sampling point into different risk levels according to the risk factor and the level standard, wherein the risk levels include low risk, medium risk and high risk; Output the risk level of each sampling point to the subsequent unit of the risk assessment module; Impact range simulation unit for: Obtain the risk level of each sampling point from the risk level classification unit, analyze the wind speed, wind direction, temperature, and humidity environmental factors in the sampling environment, and simulate and predict the diffusion range and impact of chemicals in the target chemical list at different risk levels; Output simulation and prediction results to subsequent units of the risk assessment module; Response Development Unit for: Obtain the diffusion range and impact degree of the chemical, as well as the risk level information from the impact range simulation unit, and formulate response measures based on the risk assessment results and the preset measures catalog, including emergency evacuation, isolation of areas, and closure of related facilities; The output results of the risk level classification unit and the impact range simulation unit are collected and summarized, and the risk assessment results are generated based on the summarized results and the response measures. The risk assessment results include risk level, impact range, and response measures.

[0025] In the above embodiments, the risk factors of each sampling point, such as toxicity index and explosion limit, are calculated by comprehensively considering the type, concentration, relative abundance, toxicity, flammability, explosiveness and other characteristics of the chemicals, so as to provide comprehensive and accurate data support for subsequent risk assessment. According to the established risk level classification standards and thresholds, the risk of each sampling point can be accurately classified into low risk, medium risk or high risk levels, which helps to quickly identify high-risk areas and take priority response measures.

[0026] In the above embodiment, the environmental factors such as wind speed, wind direction, temperature, humidity, etc. in the sampling environment are combined to simulate and predict the diffusion range and impact degree of chemicals under different risk levels, provide a scientific basis for formulating response measures, and help reduce the potential hazards of chemical accidents to personnel and the environment. According to the risk assessment results and the preset measures catalog, emergency evacuation, isolation of areas, closure of related facilities and other response measures are formulated, which helps to quickly control the development of chemical accidents and reduce losses.

[0027] Alarm warning module, including: A threshold setting unit, for: Setting initial warning thresholds for different types of chemicals, including concentration thresholds, toxicity index thresholds, and explosion limit thresholds; According to the test results, risk assessment results and actual on-site conditions, the set thresholds are dynamically adjusted. When the concentration of the current chemical is detected to be continuously rising, the warning threshold of the current chemical is lowered; when the concentration of the current chemical is detected to be continuously decreasing, the warning threshold of the current chemical is increased; The set threshold is stored in the system database; Real-time monitoring and comparison unit for: receiving the type, concentration and relative abundance detection results of the chemicals from the data analysis module in real time, and comparing the received detection results with the threshold values ​​stored in the threshold setting unit; According to the comparison results, determine whether the current test results exceed or approach the set threshold. If the test results exceed or approach the threshold, send an early warning instruction, otherwise, continue real-time monitoring; Alarm triggering unit for: When receiving the warning instruction, trigger the alarm; Integrate the detection data, sampling information, chemical information and threshold information when the alarm is triggered to form complete alarm information, and output the integrated alarm information to the system user; Recording feedback unit for: Record the time, location, chemical type, concentration, and trigger threshold information of each alarm trigger; A feedback portal is generated, wherein the feedback portal is used to receive alarm system usage conditions collected through user feedback and on-site observation, wherein the alarm system usage conditions include false alarms and missed alarms.

[0028] In the above embodiment, the threshold setting unit can set initial warning thresholds for different types of chemicals, and dynamically adjust them according to the test results, risk assessment and actual on-site conditions, ensuring that the warning system can adapt to the complex and changeable chemical environment, improving the accuracy of the warning, receiving the test results of the chemicals in real time, and comparing them with the set thresholds. Once an abnormality is detected, a warning instruction is immediately sent, ensuring that the system can respond quickly to potential chemical hazards and effectively shortening the response time.

[0029] In the above embodiment, when an alarm is triggered, the detection data, sampling information, chemical information and threshold information at the time of triggering the alarm can be integrated to form complete alarm information, which helps users quickly understand the specific situation and background of the alarm, so as to make accurate response measures, and record the time, location, chemical type, concentration and trigger threshold information of each alarm trigger, which provides users with historical data query and analysis functions. At the same time, the generated feedback portal can receive user feedback and on-site observations, which helps to continuously optimize and improve the performance of the alarm system.

[0030] Specifically, the alarm warning module further includes: A real-time monitoring module, used to monitor the generation response time of the feedback entry in real time; A duration comparison module, used to compare the generated response duration with a preset response duration threshold; A generation time calling module, used for calling the generation time corresponding to each feedback entry generation when the generation response time exceeds a preset response time threshold; A duration coefficient acquisition module, used to set the duration coefficient of the feedback entry using the generated duration; The duration coefficient is obtained by the following formula: ; Among them, S represents the duration coefficient; n represents the total number of times the feedback entry is generated; T si represents the generation time corresponding to the generation of the i-th feedback entry; T smax Indicates the maximum generation time corresponding to n feedback entry generation; T y Indicates the preset response time threshold; T x Indicates the generation response time corresponding to exceeding the preset response time threshold; The entry duration setting module is used to set the entry duration corresponding to the currently generated feedback entry using the duration coefficient.

[0031] The technical effect of the above technical solution is: through the real-time monitoring module system can continuously track the generation response time of the feedback entry to ensure real-time monitoring of system performance. Once the generation response time is abnormal (that is, exceeding the preset response time threshold), the system can quickly identify it through the time comparison module. The generation time retrieval module can retrieve the generation time corresponding to each feedback entry generation to provide data support for subsequent analysis. The duration coefficient acquisition module uses a complex calculation formula to comprehensively consider the total number of feedback entry generation, the duration of each generation, the maximum generation duration, the preset response time threshold, and the generation response time exceeding the threshold, thereby deriving an accurate duration coefficient. This coefficient can reflect the current performance status of the system and possible future performance trends.

[0032] The entry duration setting module uses the calculated duration coefficient to dynamically adjust the entry duration of the currently generated feedback entry. This dynamic adjustment helps the system to adaptively optimize according to the current performance status, improving user experience and system efficiency. Through real-time monitoring, precise analysis and dynamic adjustment, this technical solution can promptly discover and solve system performance problems, and prevent problems such as reduced user experience or system crashes caused by long feedback entry generation response time. In addition, by continuously optimizing the entry duration of the feedback entry, the system can better meet user needs and improve overall stability and reliability.

[0033] In summary, this technical solution achieves comprehensive monitoring, precise analysis and dynamic adjustment of the response time generated by the feedback entry through the collaborative work of a series of sub-modules, thereby effectively improving the stability and reliability of the system and optimizing the user experience.

[0034] Specifically, the entry duration setting module includes: The duration coefficient retrieval time is used to retrieve the duration coefficient; A generation time interval acquisition module is used to retrieve the generation time interval corresponding to the alarm trigger information; wherein the alarm trigger information includes the alarm triggering time, location, chemical type, concentration and triggering threshold information; A time interval coefficient acquisition module, used to acquire a time interval coefficient using the generation time interval corresponding to the alarm trigger information; The time interval coefficient is obtained by the following formula: ; Where G represents the time interval coefficient; m represents the total number of time intervals corresponding to the alarm trigger information; T gi Indicates the time length value corresponding to the i-th generation time interval; T gb represents the standard deviation of the time length corresponding to m generation time intervals; T sb represents the standard deviation of the generation time corresponding to the generation of n feedback entries; T smax Indicates the maximum generation time corresponding to n feedback entry generation; T gmax represents the maximum difference in the time lengths corresponding to the m generation time intervals; T xb It represents the standard deviation of the response time corresponding to the generation of n feedback entries; An entry duration acquisition module, used to acquire the entry duration using the time interval coefficient and the duration coefficient; The duration of the entry is obtained by the following formula: ; Among them, T cx Indicates the duration of the entrance; T0 indicates the preset reference value of the duration of the entrance; G indicates the time interval coefficient; S indicates the duration coefficient; G x Indicates the preset time interval coefficient reference value; The entry persistence and cancellation control module is used to control the duration of the current feedback entry after it is generated, and to cancel the currently generated feedback entry at the end of the entry duration.

[0035] The technical effect of the above technical solution is: by calling the duration coefficient, the system can accurately obtain the duration coefficient calculated previously, providing a basis for subsequent calculations. The time interval acquisition module can retrieve detailed data of the alarm trigger information, including time, location, chemical type, concentration and trigger threshold, etc., which are crucial for evaluating system performance and formulating optimization strategies. The time interval coefficient acquisition module uses a complex calculation formula to comprehensively consider multiple dimensions of the alarm trigger information (such as the total number of time intervals, time length value, standard deviation, etc.), so as to obtain an accurate time interval coefficient. This coefficient can reflect the current state of the system and future change trends. The entrance duration acquisition module combines the time interval coefficient and the duration coefficient to calculate the entrance duration through a formula. This dynamic adjustment mechanism enables the system to adaptively adjust the duration of the feedback entrance according to the current situation, improving the flexibility and response speed of the system. The entrance duration and cancellation control module is responsible for keeping the feedback entrance active during the entrance duration and automatically canceling the entrance at the end of the duration. This mechanism helps to avoid waste of resources and potential security risks, and ensure the stability and reliability of the system. By accurately calculating the duration of the entry, the system can manage resources more effectively, improve resource utilization, and reduce the risk of system performance degradation or crashes caused by long-term resource occupation. By dynamically adjusting the duration of the feedback entry, the system can better meet user needs and improve user experience. For example, in an emergency, the system can shorten the duration of the feedback entry so that users can obtain key information and respond more quickly. At the same time, through the automatic logout function, the system can avoid confusion or misoperation caused by long-term inactivity, further improving user satisfaction and trust.

[0036] In summary, this technical solution achieves accurate calculation and effective control of the duration of feedback entry through optimization of refined management and control, dynamic adjustment and adaptability, efficient resource utilization and security, and improved user experience and satisfaction, thereby improving the overall performance of the system and user satisfaction.

[0037] In order to better demonstrate the chemical gas phase hazard detection system, this embodiment now proposes a chemical gas phase hazard detection method, including the following steps: Step 1: Sample collection: Use gas sampling equipment to collect chemical gas samples from different points in the target environment and record the sampling information; Step 2: Sample detection data collection, using gas chromatography, mass spectrometry, and infrared spectrometry instruments to detect gas phase samples, and collect detection data from the detection instruments in real time; Step 3: Chemical identification and analysis: analyze the collected test data, compare them with the chemical database and spectrum library, identify the types of chemicals, calculate the concentration and relative abundance of chemicals, and output the test results; Step 4: Risk assessment simulation: Based on the test results, chemical properties and sampling environment, simulate the gas concentration distribution at different sampling points in the current sampling environment, evaluate the toxicity, flammability and explosiveness of chemicals, and classify risk levels, simulate and predict the diffusion range and impact of chemicals at different risk levels; Step 5: Real-time monitoring, setting initial warning thresholds for different types of chemicals, dynamically adjusting warning thresholds based on test results and risk assessment results, real-time monitoring of test results, and comparing them with the set thresholds to determine whether the current test results exceed or are close to the set thresholds; Step 6: Alarm triggering. When the test results exceed or approach the set threshold, the alarm is triggered and complete alarm information is output, recording the time, location, chemical type, concentration, and trigger threshold information of each alarm triggering, and generating a complete test report.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chemical gas phase hazard detection system, characterized in that: include: Sample collection module for: Set sampling time and flow parameters, collect chemical gas samples from the target environment through a gas sampling device based on the sampling time, and record sampling information, wherein the gas sampling device is set at different points in the sampling environment, and the sampling information includes time, location, sampling point number, and environmental conditions; Sample detection module for: The samples were tested using gas chromatography, mass spectrometry, and infrared spectroscopy instruments; Data acquisition module for: Collecting detection data from the detection instrument in real time during the detection process and storing it in a storage medium; Data analysis module for: Analyze the collected test data, compare it with the chemical database and spectrum library, identify the type and concentration of chemicals, calculate the concentration and relative abundance of chemicals, and output the test results; Risk assessment module for: Based on the test results, chemical properties and on-site conditions of gas phase sample collection, qualitative and quantitative risk assessment is carried out, the gas concentration distribution at different sampling points in the current sampling environment is simulated, and the risk assessment results are output; Alarm warning module, used for: Set alarm and warning thresholds. When the test results exceed the thresholds, the warning signal is automatically triggered. The detailed information of the warning signal includes time, location, chemical type, and concentration; Report generation module for: Generate a complete test report based on the test results and risk assessment results; Wherein, the alarm warning module includes: Alarm triggering unit for: When receiving the warning instruction, trigger the alarm; Integrate the detection data, sampling information, chemical information and threshold information when the alarm is triggered to form complete alarm information, and output the integrated alarm information to the system user; Recording feedback unit for: Record the time, location, chemical type, concentration, and trigger threshold information of each alarm trigger; Generate a feedback portal, the feedback portal is used to receive alarm system usage conditions collected through user feedback and on-site observation, the alarm system usage conditions including false alarms and missed alarms; A real-time monitoring module, used to monitor the generation response time of the feedback entry in real time; A duration comparison module, used to compare the generated response duration with a preset response duration threshold; A generation time calling module, used for calling the generation time corresponding to each feedback entry generation when the generation response time exceeds a preset response time threshold; A duration coefficient acquisition module, used to set the duration coefficient of the feedback entry using the generated duration; The duration coefficient is obtained by the following formula: ； Among them, S represents the duration coefficient; n represents the total number of times the feedback entry is generated; T si represents the generation time corresponding to the generation of the i-th feedback entry; T smax Indicates the maximum generation time corresponding to n feedback entry generation; T y Indicates the preset response time threshold; T x Indicates the generation response time corresponding to exceeding the preset response time threshold; The entry duration setting module is used to set the entry duration corresponding to the currently generated feedback entry using the duration coefficient.

2. A chemical gas phase hazard detection system as claimed in claim 1, characterized in that: The data analysis module comprises: Data pre-processing unit, used for: Receive the raw data transmitted by the data acquisition module, remove invalid and abnormal data, organize the data into a matrix form, and calibrate the data according to the calibration records of the detection instrument; Comparison and identification unit, used for: According to the preprocessed data features, matching chemicals are searched in the chemical database, and the successfully matched chemicals are marked as candidate results, and compared with the standard spectra of the candidate results in the spectrum library, wherein the standard spectra include gas chromatograms, mass spectra, and infrared spectra; According to the comparison results of the candidate results, the types of chemicals are determined and a list of target chemicals is obtained.

3. A chemical gas phase hazard detection system as claimed in claim 2, characterized in that: The data analysis module further includes: Concentration and abundance analysis unit, used for: Calculate the actual concentration of each chemical in the target chemical list and the relative abundance of each chemical in the target chemical list in the sample based on the signal intensity in the detection data, the calibration curve and the known chemical concentration; Verify the calculation results and output the calculation results; Result summary output unit, used for: The output results of the comparison and identification unit and the concentration and abundance analysis unit are collected and summarized, and a test result is generated based on the summarized results. The test result includes the type, concentration and relative abundance of the chemical.

4. A chemical gas phase hazard detection system as claimed in claim 1, characterized in that: The risk assessment module comprises: Risk Factor Assessment Unit, used to: Obtain information on the type, concentration and relative abundance of chemicals from the data analysis module, retrieve chemical information from the chemical database, and analyze the toxicity, flammability and explosive properties of each chemical in the target chemical list; Combining the test results with the chemical characteristics, the risk factor of each sampling point is calculated, the risk factor including the toxicity index and the explosion limit, and the risk factor of each sampling point is output to the subsequent unit of the risk assessment module; Risk level classification unit, used for: Obtaining the risk factor of each sampling point from the risk factor assessment unit, formulating the risk level classification standard and threshold, and classifying the risk of each sampling point into different risk levels according to the risk factor and the level standard, wherein the risk levels include low risk, medium risk and high risk; The risk level of each sampling point is output to the subsequent unit of the risk assessment module.

5. A chemical gas phase hazard detection system as claimed in claim 4, characterized in that: The risk assessment module further includes: Impact range simulation unit for: Obtain the risk level of each sampling point from the risk level classification unit, analyze the wind speed, wind direction, temperature, and humidity environmental factors in the sampling environment, and simulate and predict the diffusion range and impact of chemicals in the target chemical list at different risk levels; Output simulation and prediction results to subsequent units of the risk assessment module; Response Development Unit for: Obtain information on the spread range, impact degree and risk level of chemicals from the impact range simulation unit, and formulate response measures based on the risk assessment results and the preset measures catalog, including emergency evacuation, isolation of areas and closure of facilities; The output results of the risk level classification unit and the impact range simulation unit are collected and summarized, and the risk assessment results are generated based on the summarized results and the response measures. The risk assessment results include risk level, impact range, and response measures.

6. A chemical gas phase hazard detection system as claimed in claim 1, characterized in that: The alarm warning module also includes: A threshold setting unit, for: Setting initial warning thresholds for different types of chemicals, including concentration thresholds, toxicity index thresholds, and explosion limit thresholds; According to the test results, risk assessment results and actual on-site conditions, the set thresholds are dynamically adjusted. When the concentration of the current chemical is detected to be continuously rising, the warning threshold of the current chemical is lowered; when the concentration of the current chemical is detected to be continuously decreasing, the warning threshold of the current chemical is increased; The set threshold is stored in the system database; Real-time monitoring and comparison unit for: receiving the type, concentration and relative abundance detection results of the chemicals from the data analysis module in real time, and comparing the received detection results with the threshold values ​​stored in the threshold setting unit; According to the comparison results, determine whether the current test results exceed or approach the set threshold. When the test results exceed or approach the threshold, send an early warning instruction, otherwise, continue real-time monitoring.

7. A chemical gas phase hazard detection system as claimed in claim 1, characterized in that: The entry duration setting module includes: The duration coefficient retrieval time is used to retrieve the duration coefficient; A generation time interval acquisition module is used to retrieve the generation time interval corresponding to the alarm trigger information; wherein the alarm trigger information includes the alarm triggering time, location, chemical type, concentration and triggering threshold information; A time interval coefficient acquisition module, used to acquire the time interval coefficient using the generation time interval corresponding to the alarm trigger information; The time interval coefficient is obtained by the following formula: ； Where G represents the time interval coefficient; m represents the total number of time intervals corresponding to the alarm trigger information; T gi Indicates the time length value corresponding to the i-th generation time interval; T gb represents the standard deviation of the time length corresponding to m generation time intervals; T sb represents the standard deviation of the generation time corresponding to the generation of n feedback entries; T smax Indicates the maximum generation time corresponding to n feedback entry generation; T gmax represents the maximum difference in the time lengths corresponding to the m generation time intervals; T xb It represents the standard deviation of the response time corresponding to the generation of n feedback entries; An entry duration acquisition module, used to acquire the entry duration using the time interval coefficient and the duration coefficient; The duration of the entry is obtained by the following formula: ； Among them, T cx Indicates the duration of the entrance; T0 indicates the preset reference value of the duration of the entrance; G indicates the time interval coefficient; S indicates the duration coefficient; G x Indicates the preset time interval coefficient reference value; The entry persistence and cancellation control module is used to control the duration of the current feedback entry after it is generated, and to cancel the currently generated feedback entry at the end of the entry duration.

8. A method for detecting gas-phase hazard of chemicals, implemented based on the gas-phase hazard detection system of chemicals according to claim 7, characterized in that: The steps include: Step 1: Sample collection: Use gas sampling equipment to collect chemical gas samples from different points in the target environment and record the sampling information; Step 2: Sample detection data collection, using gas chromatography, mass spectrometry, and infrared spectrometry instruments to detect gas phase samples, and collect detection data from the detection instruments in real time; Step 3: Chemical identification and analysis: analyze the collected test data, compare them with the chemical database and spectrum library, identify the types of chemicals, calculate the concentration and relative abundance of chemicals, and output the test results; Step 4: Risk assessment simulation: Based on the test results, chemical properties and sampling environment, simulate the gas concentration distribution at different sampling points in the current sampling environment, evaluate the toxicity, flammability and explosiveness of chemicals, and classify risk levels, simulate and predict the diffusion range and impact of chemicals at different risk levels; Step 5: Real-time monitoring, setting initial warning thresholds for different types of chemicals, dynamically adjusting warning thresholds based on test results and risk assessment results, real-time monitoring of test results, and comparing them with the set thresholds to determine whether the current test results exceed or are close to the set thresholds; Step 6: Alarm triggering. When the test results exceed or approach the set threshold, the alarm is triggered and complete alarm information is output, recording the time, location, chemical type, concentration, and trigger threshold information of each alarm triggering, and generating a complete test report.

Images