A gas sampling analysis monitoring system, method and apparatus

Abstract

This invention provides a gas sampling analysis and monitoring system, method, and device, relating to the field of sampling equipment technology. The system acquires environmental data surrounding the sampling device via a monitoring device; determines that the environmental data is in a safe state based on the environmental data; acquires image data and video stream data of each valve and detector in the sampling device; determines the initial position of each valve and the initial value of each detector based on the image data and video stream data, ensuring that the initial positions of each valve are correct and the initial values ​​of each detector are within the required range; controls each valve to operate according to a preset sampling analysis strategy, enabling the analysis module to acquire the gas to be analyzed; and controls the analysis module to analyze the gas to be analyzed to obtain the analysis results, ensuring the accuracy and safety of the sampling process.

Description

Technical Field

[0001] This invention relates to the field of sampling equipment technology, and more specifically, to a gas sampling, analysis and monitoring system, method and equipment. Background Technology

[0002] In existing technologies, the sampling process of helium gas using sampling equipment generally relies on manual operation and monitoring to determine the sequence of valve actions and pipeline pressures. However, manual operation and monitoring have the following drawbacks: the consistency between manual judgment of valve actions and pressure gauge readings is easily affected by subjective factors, which may lead to judgment errors, resulting in low efficiency and difficulty in ensuring the accuracy of the sampling process; furthermore, in emergency situations, manually shutting off valves often results in a delayed response, making it impossible to respond quickly and effectively avoid danger, thus adversely affecting the safety of the sampling process. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a gas sampling analysis and monitoring system, method and device to ensure the accuracy and safety of the sampling process.

[0004] In a first aspect, this application provides a gas sampling, analysis, and monitoring system, comprising: The sampling device includes a gas module, a vacuum module, a sampling module, and an analysis module; the sampling module is connected to the gas module via a gas valve, to the vacuum module via a vacuum valve, and to the analysis module via a sample valve. The monitoring device includes an environmental monitoring module and an equipment monitoring module. The environmental monitoring module is used to acquire environmental data around the sampling device. The equipment monitoring module is used to acquire image data and video stream data of various valves and gauges in the sampling device. The valves include gas valves, vacuum valves, sample valves, and flow control valves in the analysis module. The gauges include gas pressure gauges in the gas module and sample pressure gauges in the sampling module. The processing module is connected to the sampling device, environmental monitoring module, and equipment monitoring module. During gas sampling and analysis, the processing module acquires environmental data surrounding the sampling device; determines that the environmental data is in a safe state; acquires image data and video stream data of each valve and detector in the sampling device; based on the image data and video stream data, determines the initial position of each valve and the initial value of each detector, ensuring that the initial position of each valve is correct and the initial value of each detector is within the required range; controls each valve to operate according to a preset sampling and analysis strategy, enabling the analysis module to acquire the gas to be analyzed; and controls the analysis module to analyze the gas to obtain the analysis results.

[0005] Optionally, the gas module includes a gas pressure regulator, a gas pressure gauge, and a gas storage unit, wherein the gas storage unit, the gas pressure regulator, the gas pressure gauge, and the gas valve are connected in sequence. The vacuum module includes a vacuum unit, which is connected to a vacuum valve; The sampling module includes a sample unit, a sample pressure reducer, and a sample pressure gauge, which are connected in sequence; a vacuum valve and a gas valve are located between the sample unit and the sample pressure reducer. The analysis module includes a spray unit, a spray valve, an analysis unit, and a flow control valve; the spray unit, spray valve, analysis unit, and flow control valve are connected in sequence; the flow control valve is connected to the sample valve.

[0006] Optionally, the processing module controls each valve to operate according to a preset sampling and analysis strategy, so that the analysis module can acquire the gas to be analyzed, including: The vacuum valve is kept in the open state so that when the pressure value on the gas pressure gauge is negative, the vacuum valve is kept in the closed state. Acquire image data of the current vacuum valve and gas pressure gauge; based on the image data and video stream data of the current vacuum valve and gas pressure gauge, determine whether the valve position of the current vacuum valve and the pressure value of the gas pressure gauge are in a normal state; The control gas valve is in the open state so that when the pressure value of the gas pressure gauge reaches the first threshold, the control gas valve is in the closed state. Acquire image data of the current gas valve and gas pressure gauge; based on the image data and video stream data of the current gas valve and gas pressure gauge, determine whether the valve position of the current gas valve and the pressure value of the gas pressure gauge are in a normal state; The sample valve is kept open and the gas pressure regulator is activated to make the pressure value of the sample pressure gauge reach the second threshold. Acquire image data of the current sample valve and sample pressure gauge; based on the image data and video stream data of the current sample valve and sample pressure gauge, determine whether the valve position of the current sample valve and the pressure value of the sample pressure gauge are in a normal state; The sample valve is kept open, and the flow regulating valve is activated to bring the pressure in the analysis module to the third threshold. Acquire the image data of the current sample valve; using the image data and video stream data of the current sample valve, determine whether the valve position of the current sample valve is in a normal state; The spray valve in the control analysis module is in the open state so that the pressure value in the analysis module reaches the third threshold and continues for a preset time; Acquire the image data of the current sprinkler valve; based on the image data and video stream data of the current sprinkler valve, determine whether the valve position of the current sprinkler valve is in a normal state; The flow regulating valve is controlled to activate so that the pressure value in the analysis module reaches the first threshold, thereby enabling the analysis module to acquire the gas to be analyzed.

[0007] Optionally, the processing module is further configured to control the gas valve to be in the open state so that when the pressure value of the gas pressure gauge reaches a first threshold, and after controlling the gas valve to be in the closed state, it also includes: Repeat the vacuum operation up to a preset number of times; wherein the vacuum operation includes: controlling the vacuum valve to be in the open state, so that when the pressure value of the gas pressure gauge is negative, controlling the vacuum valve to be in the closed state; acquiring image data of the current vacuum valve and gas pressure gauge; using the image data and video stream data of the current vacuum valve and gas pressure gauge, determining that the valve position of the current vacuum valve and the pressure value of the gas pressure gauge are in a normal state; controlling the gas valve to be in the open state, so that when the pressure value of the gas pressure gauge reaches a first threshold, controlling the gas valve to be in the closed state; acquiring image data of the current gas valve and gas pressure gauge; using the image data and video stream data of the current gas valve and gas pressure gauge, determining that the valve position of the current gas valve and the pressure value of the gas pressure gauge are in a normal state.

[0008] Optionally, the processing module is also used to: based on environmental data surrounding the sampling device, use a leak detection model to determine if a leak exists in the sampling device, and then control the alarm module to perform an alarm operation; wherein, the leak detection model receives environmental data through the input layer, determines the presence of a leak in the sampling device based on the environmental data through the hidden layer, and outputs a neural network model indicating that the sampling device has a leak through the output layer; the alarm operation includes cutting off the pipeline, notifying management personnel, flashing, and sounding.

[0009] Secondly, this application provides a gas sampling and analysis method, applicable to the processing module of the aforementioned gas sampling and analysis monitoring system, comprising: Acquire environmental data surrounding the sampling device; Based on environmental data, it was determined that the environmental data was in a safe state; Acquire image data and video stream data of each valve and gauge in the sampling device; Based on image data and video stream data, the initial position of each valve and the initial value of each detection meter are determined, and it is confirmed that the initial position of each valve is in the correct position and the initial value of each detection meter is in the required value. Control each valve to operate according to the preset sampling and analysis strategy so that the analysis module can acquire the gas to be analyzed; The control and analysis module analyzes the gas to be analyzed and obtains the analysis results.

[0010] Optionally, each valve is controlled to operate according to a preset sampling and analysis strategy, so that the analysis module can acquire the gas to be analyzed, including: The vacuum valve is kept in the open state so that when the pressure value on the gas pressure gauge is negative, the vacuum valve is kept in the closed state. Acquire image data of the current vacuum valve and gas pressure gauge; based on the image data and video stream data of the current vacuum valve and gas pressure gauge, determine whether the valve position of the current vacuum valve and the pressure value of the gas pressure gauge are in a normal state; The control gas valve is in the open state so that when the pressure value of the gas pressure gauge reaches the first threshold, the control gas valve is in the closed state. Acquire image data of the current gas valve and gas pressure gauge; based on the image data and video stream data of the current gas valve and gas pressure gauge, determine whether the valve position of the current gas valve and the pressure value of the gas pressure gauge are in a normal state; The sample valve is kept open and the gas pressure regulator is activated to make the pressure value of the sample pressure gauge reach the second threshold. Acquire image data of the current sample valve and sample pressure gauge; based on the image data and video stream data of the current sample valve and sample pressure gauge, determine whether the valve position of the current sample valve and the pressure value of the sample pressure gauge are in a normal state; The sample valve is kept open, and the flow regulating valve is activated to bring the pressure in the analysis module to the third threshold. Acquire the image data of the current sample valve; using the image data and video stream data of the current sample valve, determine whether the valve position of the current sample valve is in a normal state; The spray valve in the control analysis module is in the open state so that the pressure value in the analysis module reaches the third threshold and continues for a preset time; Acquire the image data of the current sprinkler valve; based on the image data and video stream data of the current sprinkler valve, determine whether the valve position of the current sprinkler valve is in a normal state; The flow regulating valve is controlled to activate so that the pressure value in the analysis module reaches the first threshold, thereby enabling the analysis module to acquire the gas to be analyzed.

[0011] Optionally, after controlling the gas valve to be in the open state so that the pressure value of the gas pressure gauge reaches a first threshold, and then controlling the gas valve to be in the closed state, the method further includes: Repeat the vacuum operation up to a preset number of times; wherein the vacuum operation includes: controlling the vacuum valve to be in the open state, so that when the pressure value of the gas pressure gauge is negative, controlling the vacuum valve to be in the closed state; acquiring image data of the current vacuum valve and gas pressure gauge; using the image data and video stream data of the current vacuum valve and gas pressure gauge, determining that the valve position of the current vacuum valve and the pressure value of the gas pressure gauge are in a normal state; controlling the gas valve to be in the open state, so that when the pressure value of the gas pressure gauge reaches a first threshold, controlling the gas valve to be in the closed state; acquiring image data of the current gas valve and gas pressure gauge; using the image data and video stream data of the current gas valve and gas pressure gauge, determining that the valve position of the current gas valve and the pressure value of the gas pressure gauge are in a normal state.

[0012] Thirdly, this application also provides a gas sampling and analysis device that applies the above-mentioned gas sampling and analysis method, including: a gas module, a vacuum module, a sampling module, and an analysis module; the sampling module is connected to the gas module through a gas valve, to the vacuum module through a vacuum valve, and to the analysis module through a sample valve.

[0013] Optionally, the gas module includes a gas pressure regulator, a gas pressure gauge, and a gas storage unit, wherein the gas storage unit, the gas pressure regulator, the gas pressure gauge, and the gas valve are connected in sequence. The vacuum module includes a vacuum unit, which is connected to a vacuum valve; The sampling module includes a sample unit, a sample pressure reducer, and a sample pressure gauge, which are connected in sequence; a vacuum valve and a gas valve are located between the sample unit and the sample pressure reducer. The analysis module includes a spray unit, a spray valve, an analysis unit, and a flow control valve; the spray unit, spray valve, analysis unit, and flow control valve are connected in sequence; the flow control valve is connected to the sample valve.

[0014] This invention provides a gas sampling analysis and monitoring system, method, and device. The system acquires environmental data surrounding the sampling device via a monitoring device; determines that the environmental data is in a safe state; acquires image data and video stream data of each valve and detector in the sampling device; determines the initial position of each valve and the initial value of each detector based on the image data and video stream data, ensuring that the initial positions of each valve are correct and the initial values ​​of each detector are within the required range; controls each valve to operate according to a preset sampling analysis strategy, enabling the analysis module to acquire the gas to be analyzed; and controls the analysis module to analyze the gas to be analyzed and obtain analysis results, ensuring the accuracy and safety of the sampling process.

[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a gas sampling, analysis and monitoring system provided in an embodiment of the present invention is shown; Figure 2 A schematic diagram of the sampling device provided in an embodiment of the present invention is shown; Figure 3 A schematic flowchart illustrating the gas sampling, analysis, and monitoring process of the processing device provided in an embodiment of the present invention is shown. Figure 4 A schematic flowchart of a gas sampling, analysis and monitoring method provided by an embodiment of the present invention is shown; Figure 5 A schematic diagram of the structure of a gas sampling and analysis device provided in an embodiment of the present invention is shown.

[0018] Key component symbols: 100-Sampling device; 110-Gas module; 111-Gas storage unit; 112-Gas pressure reducer; 113-Gas pressure gauge; 114-Gas valve; 120-Vacuum module; 121-Vacuum unit; 122-Vacuum valve; 130-Sampling module; 131-Sample unit; 132-Sample valve; 133-Sample pressure reducer; 134-Sample pressure gauge; 140-Analysis module; 141-Spray unit; 142-Spray valve; 143-Analysis unit; 144-Flow regulating valve; 200-Monitoring device; 210-Environmental monitoring module; 220-Equipment monitoring module; 300-Processing module. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] This application provides a gas sampling, analysis, and monitoring system, see below. Figure 1 As shown, the gas sampling and analysis monitoring system provided in this application includes a sampling device 100, a monitoring module, and a processing module 300. The sampling module 130 includes a gas module 110, a vacuum module 120, and an analysis module 140. The sampling module 130 is connected to the gas module 110 via a gas valve 114, to the vacuum module 120 via a vacuum valve 122, and to the analysis module 140 via a sample valve 132. The monitoring device 200 includes an environmental monitoring module 210 and an equipment monitoring module 220. The environmental monitoring module 210 acquires environmental data surrounding the sampling device 100. The equipment monitoring module 220 acquires image data and video stream data of various valves and gauges in the sampling device 100. The valves include the gas valve 114, the vacuum valve 122, the sample valve 132, and the flow regulating valve 144 in the analysis module 140. The detection gauges include a gas pressure gauge 113 in the gas module 110 and a sample pressure gauge 134 in the sampling module 130. The processing module 300 is connected to the sampling device 100, the environmental monitoring module 210, and the equipment monitoring module 220, respectively. When analyzing gas samples, the processing module 300 acquires environmental data around the sampling device 100; determines that the environmental data is in a safe state based on the environmental data; acquires image data and video stream data of each valve and detection gauge in the sampling device 100; determines the initial position of each valve and the initial value of each detection gauge based on the image data and video stream data, and determines that the initial position of each valve is in the correct position and the initial value of each detection gauge is in the required value; controls each valve to act according to the preset sampling and analysis strategy so that the analysis module 140 acquires the gas to be analyzed; and controls the analysis module 140 to analyze the gas to be analyzed to obtain the analysis results.

[0021] In this embodiment, the gas module 110 of the sampling module 130 is responsible for providing the gas sample to be analyzed; the vacuum module 120 is responsible for providing the necessary vacuum conditions for the sampling process to ensure the complete collection of the gas sample; the sampling module 130 is connected to the gas module 110 through the gas valve 114, connected to the vacuum module 120 through the vacuum valve 122, and sends the gas sample into the analysis module 140 through the sample valve 132; the environmental monitoring module 210 is used to acquire data on the environment in which the sampling device 100 is located, such as temperature and humidity, to ensure the safety of the sampling environment; the equipment monitoring module 220 acquires data on various valves and gauges through a camera. Image data and video stream data are used to monitor the equipment status in real time. The processing module 300 receives data from the sampling device 100, the environmental monitoring module 210, and the equipment monitoring module 220, and analyzes the environmental data to ensure the safety of the sampling environment. It also judges whether the initial state of the valves and detectors is correct based on the video stream data and image data. The processing module 300 controls the action of each valve according to a preset strategy, so that the analysis module 140 can accurately acquire the gas sample to be analyzed and analyze the gas sample to obtain the analysis results. The entire sampling process realizes the accurate acquisition and subsequent analysis of gas samples, improving the accuracy and reliability of the analysis results.

[0022] In the embodiments of this application, such as Figure 2 As shown, the gas module 110 includes a gas pressure regulator 112, a gas pressure gauge 113, and a gas storage unit 111, which are connected in sequence. The vacuum module 120 includes a vacuum unit 121, which is connected to a vacuum valve 122. The sampling module 130 includes a sample unit 131, a sample pressure regulator 133, and a sample pressure gauge 134, which are connected in sequence. The vacuum valve 122 and the gas valve 114 are located between the sample unit 131 and the sample pressure regulator 133. The analysis module 140 includes a spray unit 141, a spray valve 142, an analysis unit 143, and a flow regulating valve 144, which are connected in sequence. The flow regulating valve 144 is connected to the sample valve 132. In the embodiments of this application, such as Figure 3 As shown, the processing module controls each valve to operate according to a preset sampling and analysis strategy, so that the analysis module can obtain the gas to be analyzed. The specific steps are as follows: Step S1: Control the vacuum valve to be in the open state, so that when the pressure value of the gas pressure gauge is negative, control the vacuum valve to be in the closed state.

[0023] By controlling the opening and closing state of the vacuum valve, the pipeline of the sampling device is evacuated (e.g., evacuated for more than 10 seconds) until the gas pressure gauge shows a negative pressure value (i.e., a negative pressure environment is formed). Then the vacuum valve is closed, thereby eliminating residual air, impurities and other interfering gases in the pipeline, creating a clean and interference-free initial environment for the gas to be analyzed, and avoiding the original residual gas from affecting the accuracy of subsequent pressure monitoring or analysis results.

[0024] Step S2: Acquire image data of the current vacuum valve and gas pressure gauge; based on the image data and video stream data of the current vacuum valve and gas pressure gauge, determine that the valve position of the current vacuum valve and the pressure value of the gas pressure gauge are in a normal state.

[0025] The system acquires image and video stream data of the vacuum valve and gas pressure gauge at the current moment using a camera. By analyzing and comparing the errors between the image data, video stream data, and standard data, it determines whether the actual valve position of the vacuum valve (whether it is indeed closed or open) and the pressure value of the gas pressure gauge (whether it is stable in a negative pressure state) are in normal condition. This monitors the execution effect of step S1, ensuring that the vacuum valve has been correctly closed and that an effective negative pressure has been formed in the pipeline. This avoids subsequent operational errors caused by valves not being closed tightly or pressure not meeting the standard, and provides a verification basis for the reliability of the process.

[0026] Step S3: Control the gas valve to be in the open state so that when the pressure value of the gas pressure gauge reaches the first threshold, control the gas valve to be in the closed state.

[0027] By controlling the opening of the gas valve, the gas to be analyzed is introduced into the pipeline until the pressure value of the gas pressure gauge reaches the first threshold (e.g., 30 pounds per square inch (Psi)). Then the gas valve is closed, thereby filling the pipeline with the gas to be analyzed. The pressure value of the gas pressure gauge is used to calibrate the pipeline pressure, test the pipeline sealing, or provide a basic pressure environment for the subsequent introduction of the gas to be analyzed, ensuring that the pressure in the pipeline meets the basic conditions for subsequent operations.

[0028] Step S4: Acquire image data of the current gas valve and gas pressure gauge; based on the image data and video stream data of the current gas valve and gas pressure gauge, determine that the valve position of the current gas valve and the pressure value of the gas pressure gauge are in a normal state.

[0029] The system acquires image and video stream data of the gas valve and gas pressure gauge at the current moment through a camera. By analyzing and comparing the errors between the image data, video stream data, and standard data, it confirms that the gas valve is correctly closed and the pressure value of the gas pressure gauge is stable at the first threshold. This ensures the effectiveness of the gas pressurization operation and that the gas valve status and pressure value meet expectations, avoiding the impact of valve leakage or insufficient pressure on the accuracy of subsequent gas processing.

[0030] Step S5: Control the sample valve to be in the open state and the gas pressure regulator to activate so that the pressure value of the sample pressure gauge reaches the second threshold.

[0031] By controlling the sample valve to open and simultaneously operating the gas pressure regulator to adjust the pressure, the pressure value of the sample pressure gauge is brought to the second threshold (e.g., 20 kPa), thereby introducing the gas to be analyzed into the pipeline and adjusting it to a specific pressure. This ensures that the gas to be analyzed enters the pipeline at a suitable pressure, providing the basic conditions for the stable delivery and analysis of the gas to be analyzed in the future, and ensuring that the state of the gas to be analyzed in the pipeline meets the pretreatment requirements.

[0032] Step S6: Acquire image data of the current sample valve and sample pressure gauge; based on the image data and video stream data of the current sample valve and sample pressure gauge, determine that the valve position of the current sample valve and the pressure value of the sample pressure gauge are in a normal state.

[0033] By acquiring image data and video stream data of the sample valve and sample pressure gauge at the current moment, and by analyzing and comparing the errors between the image data, video stream data and standard data, it is confirmed that the valve position of the sample valve (such as whether it is correctly opened or closed) and the pressure value of the sample pressure gauge (whether it is stable at the second threshold) are in a normal state. This verifies the effectiveness of the introduction of the analyte gas and the pressure regulation, ensuring that the sample valve is operated properly and the pressure of the analyte gas meets the standard, and avoiding the influence of incorrect entry of the analyte gas or abnormal pressure on subsequent analysis.

[0034] Step S7: Control the sample valve to be in the open state and control the flow regulating valve to make the pressure value in the analysis module reach the third threshold.

[0035] By keeping the sample valve open and adjusting the flow control valve to change the sample flow rate, the pressure value inside the analysis module (such as a chromatograph) reaches the third threshold (such as 60 kPa). This allows the gas to be analyzed to be sent into the analysis module at a specific pressure, ensuring that the pressure of the gas entering the analysis device meets its operating requirements. This provides a stable input condition for the gas to be analyzed into the analysis module, guaranteeing the accuracy and repeatability of subsequent analysis processes.

[0036] Step S8: Obtain the image data of the current sample valve; based on the image data and video stream data of the current sample valve, determine that the valve position of the current sample valve is in a normal state.

[0037] By acquiring the image data and video stream data of the sample valve at the current moment, and by analyzing and comparing the errors between the image data, video stream data and standard data, it is confirmed that the sample valve is in a normally open state. This verifies whether the sample valve maintains the correct state during the sample delivery to the analysis module, avoids interruption of the gas delivery due to accidental valve closure, and ensures that the sample can continuously and stably enter the analysis module.

[0038] Step S9: The spray valve in the control analysis module is in the open state so that the pressure value in the analysis module reaches the third threshold and continues for a preset time.

[0039] By controlling the opening of the spray valve in the analysis module, the pressure value inside the analysis module is maintained at the third threshold and continuously for a preset time (such as a purging time of 10 minutes). This allows the continuous flow of the gas sample to be analyzed to remove residual impurities or preceding gases from the analysis module, thereby purifying the analysis module. At the same time, it ensures stable pressure during the purging process, ensuring sufficient purging effect and laying the foundation for subsequent accurate analysis.

[0040] Step S10: Obtain the image data of the current spray valve; based on the image data and video stream data of the current spray valve, determine that the valve position of the current spray valve is in a normal state.

[0041] By acquiring the image data and video stream data of the spray valve at the current moment, and by analyzing and comparing the errors between the image data, video stream data and standard data, it is confirmed that the spray valve is in a normal open state during the purging process. This verifies the effectiveness of the spray valve operation, ensures that the purged gas can be smoothly discharged through the spray valve (such as entering the spray tower for processing), avoids abnormal system pressure or incomplete purging due to the valve not being open, and ensures the normal progress of the purging process.

[0042] Step S11: Control the flow regulating valve to make the pressure value in the analysis module reach the first threshold so that the analysis module can obtain the gas to be analyzed.

[0043] By adjusting the flow control valve, the pressure value within the analysis module is adjusted to the first threshold, enabling the analysis module (such as a chromatograph) to stably acquire the gas to be analyzed. This ensures that the gas to be analyzed participates in the detection process in a stable state within the analysis module, ultimately obtaining accurate and reliable analytical results.

[0044] The sampling analysis strategy provided in this application acquires image data and real-time video stream data of each valve and test gauge at the current moment through the monitoring module before and after each sampling operation is performed by the sampling device. By analyzing the error between the image data, video stream data and standard data, it detects whether each valve and test gauge is in a normal state at the current moment, thereby ensuring the accuracy and safety of the sampling process.

[0045] In practical implementation, the position of each valve can be determined by analyzing and comparing the errors between image data, video stream data, and standard data. This can be done in the following ways: First, the image data can be processed using Gaussian filtering, Canny edge detection, and Hough Transform to obtain the current state of each valve. Gaussian filtering removes noise (such as ambient light interference and camera noise) and smooths image edges, reducing interference for subsequent feature extraction (e.g., eliminating light spots on the dial image to avoid affecting pointer recognition). Canny edge detection uses multi-stage thresholding to accurately extract features from the image, such as the edges of the valve's mechanical structure, the dial's scale lines, and the pointer / digit outlines, clearly defining the boundary between the target area and the background. Hough Transform extracts the dial's scale lines, the valve's markings, and the circular outline of the dial and the circular structure of the valve knob, providing a basis for target localization. Video stream data can be processed using inter-frame difference (IPD) and optical flow. IPD compares the pixel differences between two consecutive frames in the video stream to identify dynamic regions, such as areas where valve handles rotate or pointers move, eliminating static background frames and retaining key action frames to reduce redundant calculations. Optical flow tracks the pixel motion trajectory of targets (such as valve handles or pointers) in the video stream, calculates the direction and speed of the target's motion (e.g., determining whether the valve handle is rotating in the "open" or "close" direction, and whether the pointer is stable), and helps determine whether the state is stable. Then, image feature data is extracted from the image data. This can be done by sliding the image modules in the standard database (such as template images of valves in fully open / fully closed states) with the image data and calculating the similarity. If the similarity is ≥90%, the valve is determined to be in the corresponding state. Alternatively, key points of the valve (such as handle endpoints and valve body markings) can be extracted from the standard image and the real-time image. The matching degree can be calculated based on the position, scale, and orientation features of the key points. At the same time, the relative angle / distance error between the key points is calculated (e.g., when the standard is fully open, "the angle between handle endpoint A and valve body marking point B is 0°", and if it is 1° in real time, the error is 1°). If the error is ≤ a preset threshold (such as 3°), the position is determined to be normal. Feature data is extracted from the video stream data. Specifically, the outline of the valve handle is extracted using Canny edge detection, and the handle's centerline (e.g., a straight line) is fitted. Then, using a fixed reference line of the valve body (e.g., the pipeline axis) as a benchmark, the angle between the centerline and the reference line is calculated (e.g., when the handle's centerline is parallel to the pipeline axis, it's fully open with an angle of 0°; when it's perpendicular, it's fully closed with an angle of 90°). The real-time angle is compared with the standard angle; if the error is within a threshold, the valve is considered to be in normal condition. Furthermore, a Kalman filter is used to dynamically predict and correct the angle (or position) of the valve handle in the video stream, filtering out instantaneous fluctuations (e.g., angle jumps caused by vibration). If the angle values ​​for N consecutive frames (e.g., 5 frames) are all stable within the threshold range of the standard angle, the valve is considered to be in a stable state (not dynamically rotating). Finally, by comparing the feature data extracted from the image data with the feature data extracted from the video stream data and the standard data (i.e., the normal state at the current moment, where the valve is open or closed and the result of the detection table is a preset value), if the feature data extracted from the image data and the feature data extracted from the video stream data are consistent with the standard data, it means that each valve and each detection table is in a normal state; if they are inconsistent, it means that each valve and each detection table is in an abnormal state.

[0046] It should be noted that large models or other algorithms can be used to analyze and compare the errors between image data, video stream data and standard data, determine the position of each valve and the value of each detection meter; and if there are large errors between image data, video stream data and standard data, all valves on the pipeline in the sampling device can be shut off.

[0047] To reduce interference from the sampling device's pipeline with the gas to be analyzed, this embodiment of the application repeats the vacuum operation up to a preset number of times (e.g., performing a vacuum operation twice), thereby reducing other gases or impurities in the sampling device's pipeline and ensuring the purity of the gas to be analyzed that subsequently enters the chromatograph, thus ensuring that the chromatograph analysis results are more accurate and reliable.

[0048] In this embodiment, the vacuum operation includes: controlling the vacuum valve to be in an open state, and controlling the vacuum valve to be in a closed state when the pressure value of the gas pressure gauge is negative; acquiring image data of the current vacuum valve and gas pressure gauge; using the image data and video stream data of the current vacuum valve and gas pressure gauge to determine that the valve position of the current vacuum valve and the pressure value of the gas pressure gauge are in a normal state; controlling the gas valve to be in an open state, and controlling the gas valve to be in a closed state when the pressure value of the gas pressure gauge reaches a first threshold; acquiring image data of the current gas valve and gas pressure gauge; using the image data and video stream data of the current gas valve and gas pressure gauge to determine that the valve position of the current gas valve and the pressure value of the gas pressure gauge are in a normal state.

[0049] In this embodiment of the application, the processing module is further configured to: based on environmental data surrounding the sampling device, use a leakage detection model to determine that the sampling device has a leak, and then control the alarm module to perform an alarm operation; wherein, the leakage detection model receives environmental data through the input layer, and after determining that the sampling device has a leak based on the environmental data through the hidden layer, outputs a neural network model indicating that the sampling device has a leak through the output layer; the alarm operation includes cutting off the pipeline, notifying management personnel, flashing, and sound broadcasting.

[0050] In practice, during the sampling process, the monitoring module acquires environmental data in real time about the environment surrounding the sampling device and inputs the environmental data into the leakage detection model to determine whether there is a leak in the current sampling device. If a leak is found, the system will shut off all the control measures in the sampling device through the valves, notify the management personnel, and issue flashing and sound announcements to ensure the safe operation of the system and avoid potential dangers.

[0051] The gas sampling analysis and monitoring system provided in this application acquires image data, video stream data, and environmental data before and after each sampling operation in the sampling device through a monitoring device, and determines whether each sampling operation is correct, whether there is a leak, and whether there is a hazard in the current environment based on the image data, video stream data, and environmental data through a processing module, so as to ensure the accuracy and safety of the sampling process.

[0052] This application also provides a gas sampling and analysis method, see below. Figure 4 As shown, the flow of the gas sampling and analysis method provided in this application embodiment is as follows: Step 410: Obtain environmental data surrounding the sampling device; Step 420: Determine that the environmental data is in a safe state based on the environmental data; Step 430: Acquire image data and video stream data of each valve and test gauge in the sampling device; Step 440: Based on image data and video stream data, determine the initial position of each valve and the initial value of each detection meter, and ensure that the initial position of each valve is in the correct position and the initial value of each detection meter is in the required value. Step 450: Control each valve to operate according to the preset sampling and analysis strategy so that the analysis module can acquire the gas to be analyzed; Step 460: The control and analysis module analyzes the gas to be analyzed and obtains the analysis results.

[0053] In one optional embodiment, controlling each valve to operate according to a preset sampling and analysis strategy, so that the analysis module can acquire the gas to be analyzed, includes: The system controls the vacuum valve to be open, and closes it when the gas pressure gauge reading is negative; it acquires image data of the current vacuum valve and gas pressure gauge; using the image data and video stream data of the current vacuum valve and gas pressure gauge, it determines that the valve position of the current vacuum valve and the pressure value of the gas pressure gauge are in a normal state; it controls the gas valve to be open, and closes it when the pressure value of the gas pressure gauge reaches a first threshold; it acquires image data of the current gas valve and gas pressure gauge; using the image data and video stream data of the current gas valve and gas pressure gauge, it determines that the valve position of the current gas valve and the pressure value of the gas pressure gauge are in a normal state; it controls the sample valve to be open and the gas pressure regulator to activate, so that the pressure value of the sample pressure gauge reaches a second threshold; it acquires image data of the current sample valve and sample pressure gauge. Based on the image data and video stream data of the current sample valve and sample pressure gauge, determine that the valve position of the current sample valve and the pressure value of the sample pressure gauge are in a normal state; control the sample valve to be in the open state and control the flow regulating valve to actuate, so that the pressure value in the analysis module reaches the third threshold; acquire the image data of the current sample valve; based on the image data and video stream data of the current sample valve, determine that the valve position of the current sample valve is in a normal state; control the spray valve in the analysis module to be in the open state, so that the pressure value in the analysis module reaches the third threshold, and continue for a preset time; acquire the image data of the current spray valve; based on the image data and video stream data of the current spray valve, determine that the valve position of the current spray valve is in a normal state; control the flow regulating valve to actuate, so that the pressure value in the analysis module reaches the first threshold, so that the analysis module can acquire the gas to be analyzed.

[0054] In one optional embodiment, after the gas valve is in the open state to make the pressure value of the gas pressure gauge reach a first threshold, and then the gas valve is in the closed state, the method further includes: Repeat the vacuum operation up to a preset number of times; wherein the vacuum operation includes: controlling the vacuum valve to be in the open state, so that when the pressure value of the gas pressure gauge is negative, controlling the vacuum valve to be in the closed state; acquiring image data of the current vacuum valve and gas pressure gauge; using the image data and video stream data of the current vacuum valve and gas pressure gauge, determining that the valve position of the current vacuum valve and the pressure value of the gas pressure gauge are in a normal state; controlling the gas valve to be in the open state, so that when the pressure value of the gas pressure gauge reaches a first threshold, controlling the gas valve to be in the closed state; acquiring image data of the current gas valve and gas pressure gauge; using the image data and video stream data of the current gas valve and gas pressure gauge, determining that the valve position of the current gas valve and the pressure value of the gas pressure gauge are in a normal state.

[0055] It should be noted that the principle of the gas sampling and analysis method provided in this application embodiment to solve the technical problem is similar to that of the gas sampling and analysis monitoring system provided in this application embodiment. Therefore, the implementation of the gas sampling and analysis method provided in this application embodiment can refer to the implementation of the gas sampling and analysis monitoring system provided in this application embodiment, and the repeated parts will not be described again.

[0056] After introducing the gas sampling, analysis and monitoring system and method provided in the embodiments of this application, the gas sampling and analysis equipment provided in the embodiments of this application will be briefly introduced next.

[0057] This application also provides a gas sampling and analysis device that applies a gas sampling and analysis method, see below. Figure 5 As shown, the gas sampling and analysis device provided in this application embodiment includes: a gas module 110, a vacuum module 120, a sampling module 130, and an analysis module 140; the sampling module 130 is connected to the gas module 110 through a gas valve 114, to the vacuum module 120 through a vacuum valve 122, and to the analysis module 140 through a sample valve 132.

[0058] In one optional embodiment, the gas module 110 includes a gas pressure regulator 112, a gas pressure gauge 113, and a gas storage unit 111, which are sequentially connected. The vacuum module 120 includes a vacuum unit 121, which is connected to a vacuum valve 122. The sampling module 130 includes a sample unit 131, a sample pressure regulator 133, and a sample pressure gauge 134, which are sequentially connected. The vacuum valve 122 and the gas valve 114 are located between the sample unit 131 and the sample pressure regulator 133. The analysis module 140 includes a spray unit 141, a spray valve 142, an analysis unit 143, and a flow regulating valve 144, which are sequentially connected. The flow regulating valve 144 is connected to the sample valve 132.

[0059] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0060] In the description of this invention, it should be noted that the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0061] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. All should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A gas sampling analysis monitoring system characterized by, include: A sampling device includes a gas module, a vacuum module, a sampling module, and an analysis module. The sampling module is connected to the gas module via a gas valve, to the vacuum module via a vacuum valve, and to the analysis module via a sample valve. The gas module includes a gas pressure regulator, a gas pressure gauge, and a gas storage unit, which are sequentially connected. The vacuum module includes a vacuum unit, which is connected to a vacuum valve. The sampling module includes a sample unit, a sample pressure regulator, and a sample pressure gauge, which are sequentially connected. The vacuum valve and the gas valve are located between the sample unit and the sample pressure regulator. The analysis module includes a spray unit, a spray valve, an analysis unit, and a flow control valve, which are sequentially connected. The flow control valve is connected to the sample valve. The monitoring device includes an environmental monitoring module and an equipment monitoring module. The environmental monitoring module is used to acquire environmental data of the environment surrounding the sampling device. The equipment monitoring module is used to acquire image data and video stream data of various valves and gauges in the sampling device. The valves include a gas valve, a vacuum valve, a sample valve, and a flow regulating valve in the analysis module. The gauges include a gas pressure gauge in the gas module and a sample pressure gauge in the sampling module. The processing module is connected to the sampling device, the environmental monitoring module, and the equipment monitoring module, respectively. When analyzing gas samples, the processing module acquires environmental data surrounding the sampling device; determines that the environmental data is in a safe state; acquires image data and video stream data of each valve and detector in the sampling device; determines the initial position of each valve and the initial value of each detector based on the image data and video stream data, and confirms that the initial position of each valve is correct and the initial value of each detector is within the required range; and controls each valve to operate according to a preset sampling and analysis strategy, so that the analysis module can acquire the data to be analyzed. The analysis module analyzes the gas to be analyzed and obtains the analysis results. The processing module controls each valve to operate according to a preset sampling and analysis strategy, enabling the analysis module to acquire the gas to be analyzed. This includes: controlling the vacuum valve to be open so that when the pressure value of the gas pressure gauge is negative, controlling the vacuum valve to be closed; acquiring image data of the current vacuum valve and the gas pressure gauge; using the image data of the current vacuum valve and the gas pressure gauge, and the video stream data, determining that the current valve position of the vacuum valve and the pressure value of the gas pressure gauge are in a normal state; and controlling the gas valve to be open so that when the pressure value of the gas pressure gauge reaches a first threshold... The system controls the gas valve to be in the closed state; acquires image data of the gas valve and the gas pressure gauge; uses the image data and video stream data of the gas valve and the gas pressure gauge to determine that the valve position of the gas valve and the pressure value of the gas pressure gauge are in a normal state; controls the sample valve to be in the open state and activates the gas pressure regulator to make the pressure value of the sample pressure gauge reach a second threshold; acquires image data of the sample valve and the sample pressure gauge; uses the image data and video stream data of the sample valve and the sample pressure gauge to determine that the valve position of the sample valve and the pressure value of the sample pressure gauge are in a normal state; controls the sample valve to be in the open state, and controls... The flow control valve actuates to make the pressure value in the analysis module reach the third threshold; image data of the current sample valve is acquired; the image data of the current sample valve and the video stream data are used to determine that the valve position of the current sample valve is in a normal state; the spray valve in the analysis module is controlled to be in an open state to make the pressure value in the analysis module reach the third threshold, and this is maintained for a preset time; image data of the current spray valve is acquired; the image data of the current spray valve and the video stream data are used to determine that the valve position of the current spray valve is in a normal state; the flow control valve is controlled to actuate to make the pressure value in the analysis module reach the first threshold, so that the analysis module can acquire the gas to be analyzed.

2. The gas sampling analysis monitoring system of claim 1, wherein, The processing module is further configured to control the gas valve to be in the open state, and after controlling the gas valve to be in the closed state when the pressure value of the gas pressure gauge reaches the first threshold, it also includes: Repeat the vacuum operation a preset number of times; wherein the vacuum operation includes: controlling the vacuum valve to be in the open state, so that when the pressure value of the gas pressure gauge is negative, controlling the vacuum valve to be in the closed state; acquiring the current image data of the vacuum valve and the gas pressure gauge; using the current image data of the vacuum valve and the gas pressure gauge and the video stream data, determining that the current valve position of the vacuum valve and the pressure value of the gas pressure gauge are in a normal state; controlling the gas valve to be in the open state, so that when the pressure value of the gas pressure gauge reaches a first threshold, controlling the gas valve to be in the closed state; acquiring the current image data of the gas valve and the gas pressure gauge; using the current image data of the gas valve and the gas pressure gauge and the video stream data, determining that the current valve position of the gas valve and the pressure value of the gas pressure gauge are in a normal state.

3. The gas sampling, analysis, and monitoring system according to any one of claims 1 to 2, characterized in that, The processing module is also used for: Based on environmental data surrounding the sampling device, a leak detection model is used to determine if a leak exists in the sampling device. If so, the alarm module is controlled to trigger an alarm. The leak detection model receives the environmental data through an input layer, determines a leak through a hidden layer, and then outputs a neural network model indicating a leak through an output layer. The alarm operations include shutting off the pipeline, notifying management personnel, flashing an alarm, and issuing an audible alarm.

4. A method of gas sampling analysis, characterized by, The processing module applicable to the gas sampling analysis and monitoring system as described in any one of claims 1 to 3 includes: Acquire environmental data surrounding the environment where the sampling device is located; Based on the environmental data, it is determined that the environmental data is in a safe state; Acquire the image data and video stream data of each valve and detection gauge in the sampling device; Based on the image data and the video stream data, the initial position of each valve and the initial value of each detection meter are determined, and it is determined that the initial position of each valve is in the correct position and the initial value of each detection meter is in the required value. The system controls each valve to operate according to a preset sampling and analysis strategy, enabling the analysis module to acquire the gas to be analyzed. Specifically, it controls the vacuum valve to be open, and closes it when the gas pressure gauge reading is negative. It acquires image data of the vacuum valve and the gas pressure gauge; using this image data and video stream data, it determines that the current valve position of the vacuum valve and the pressure value of the gas pressure gauge are in a normal state. It controls the gas valve to be open, and closes it when the gas pressure gauge reading reaches a first threshold. It acquires image data of the gas valve and the gas pressure gauge; using this image data and video stream data, it determines that the current valve position of the gas valve and the pressure value of the gas pressure gauge are in a normal state. It controls the sample valve to be open and the gas pressure regulator to operate, so that the sample pressure gauge reading reaches a second threshold. The system uses image data of the current sample valve and the sample pressure gauge, along with video stream data, to determine that the valve position of the current sample valve and the pressure value of the sample pressure gauge are in a normal state. It controls the sample valve to be in an open state and controls the flow regulating valve to actuate, so that the pressure value in the analysis module reaches a third threshold. It then acquires image data of the current sample valve; uses the image data of the current sample valve and video stream data to determine that the valve position of the current sample valve is in a normal state. It controls the spray valve in the analysis module to be in an open state, so that the pressure value in the analysis module reaches the third threshold, and continues for a preset time. Finally, it acquires image data of the current spray valve; uses the image data of the current spray valve and video stream data to determine that the valve position of the current spray valve is in a normal state. It then controls the flow regulating valve to actuate, so that the pressure value in the analysis module reaches the first threshold, allowing the analysis module to acquire the gas to be analyzed. The analysis module is controlled to analyze the gas to be analyzed and obtain the analysis results.

5. The method of claim 4, wherein, After controlling the gas valve to be in the open state so that the pressure value of the gas pressure gauge reaches a first threshold, and then controlling the gas valve to be in the closed state, the method further includes: Repeat the vacuum operation a preset number of times; wherein the vacuum operation includes: controlling the vacuum valve to be in the open state, so that when the pressure value of the gas pressure gauge is negative, controlling the vacuum valve to be in the closed state; acquiring the current image data of the vacuum valve and the gas pressure gauge; using the current image data of the vacuum valve and the gas pressure gauge and the video stream data, determining that the current valve position of the vacuum valve and the pressure value of the gas pressure gauge are in a normal state; controlling the gas valve to be in the open state, so that when the pressure value of the gas pressure gauge reaches a first threshold, controlling the gas valve to be in the closed state; acquiring the current image data of the gas valve and the gas pressure gauge; using the current image data of the gas valve and the gas pressure gauge and the video stream data, determining that the current valve position of the gas valve and the pressure value of the gas pressure gauge are in a normal state.

6. A gas sampling and analyzing apparatus applying the gas sampling and analyzing method according to any one of claims 4 to 5, characterized by include: The system comprises a gas module, a vacuum module, a sampling module, and an analysis module; the sampling module is connected to the gas module via a gas valve, to the vacuum module via a vacuum valve, and to the analysis module via a sample valve.

7. The gas sampling and analysis apparatus of claim 6, wherein, The gas module includes a gas pressure regulator, a gas pressure gauge, and a gas storage unit, wherein the gas storage unit, the gas pressure regulator, the gas pressure gauge, and the gas valve are connected in sequence. The vacuum module includes a vacuum unit, and the vacuum unit is connected to the vacuum valve; The sampling module includes a sample unit, a sample pressure reducer, and a sample pressure gauge, wherein the sample unit, sample valve, sample pressure reducer, and sample pressure gauge are connected in sequence; the vacuum valve and the gas valve are located between the sample unit and the sample pressure reducer. The analysis module includes a spray unit, a spray valve, an analysis unit, and a flow regulating valve; the spray unit, the spray valve, the analysis unit, and the flow regulating valve are connected in sequence; the flow regulating valve is connected to the sample valve.

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