Real-time near-infrared spectrum tracing device for hazardous chemical leakage

Abstract

The application discloses a kind of dangerous chemical product leakage near-infrared spectrum real-time tracing devices, it is related to lifting appliance tool field, including near-infrared spectrometer body, the near-infrared spectrometer body one end is provided with detection end, near-infrared spectrometer body other end is provided with multiple operation buttons, near-infrared spectrometer body front end flip is installed with display screen, near-infrared spectrometer body lower end is detachably installed with handle, handle bottom end is installed with connection threaded pipe one, handle inside is placed with telescopic extension bar.The application is installed telescopic extension bar by handle lower end, the connection threaded pipe one of telescopic extension bar and handle lower end is connected, telescopic extension bar can improve the detection height of near-infrared spectrometer, it is convenient to detect the leakage on the upper end of dangerous chemical product storage equipment, facilitate the progress of detection work.

Description

Technical Field

[0001] This invention relates to the technical field of special detection equipment for environmental protection of solid waste, specifically a near-infrared spectroscopy real-time source tracing device for hazardous chemical leaks. Background Technology

[0002] Hazardous chemicals refer to highly toxic chemicals and other types of chemicals that possess significant hazardous properties such as toxicity, corrosivity, explosiveness, flammability, and oxidizing properties, posing a serious threat to human health, production facilities and equipment, and the ecological environment. Given their inherently high-risk nature, efficient and accurate leak detection is of paramount safety importance during the storage of hazardous chemicals. Its core purpose is to detect potential leak risks in real time or early, and through early warning and intervention measures, effectively prevent chain reactions of disasters that may be caused by leaks, including but not limited to fires, violent explosions, and poisoning incidents caused by the large-scale spread of toxic substances, thereby maximizing the protection of human life, property, and environmental safety.

[0003] Currently, handheld near-infrared spectrometers are a commonly used on-site detection technique for tracing and locating minute leaks in hazardous chemical storage tanks, pipelines, or containers. This technology utilizes the characteristic absorption spectrum of near-infrared light by substances to identify and confirm the type and approximate location of the leaked material. However, in practical applications, this equipment has a significant operational limitation: its handle length is fixed and limited. When close-range scanning of critical high-risk areas such as flanges, valve interfaces, welds, or vents on the top of large storage tanks, elevated containers, or pipeline systems is required, operators often cannot reach the target area or maintain the optimal detection distance and angle due to the insufficient length of the instrument handle. This physical limitation severely restricts the smooth progress of detection work.

[0004] To overcome the aforementioned height barriers and complete the task of detecting leaks at the top of containers, on-site operators are often forced to rely on external auxiliary tools, such as ladders, scaffolding, or other temporary elevation supports. This practice not only significantly reduces the efficiency of the detection operation but also introduces secondary safety risks that cannot be ignored: operators face a high risk of slipping and falling while climbing; setting up climbing equipment in narrow or complex storage areas is itself difficult and even dangerous; at the same time, operating precision instruments on unstable platforms increases the possibility of instrument damage and inaccurate detection data. Therefore, existing methods based on handheld near-infrared spectrometers have significant shortcomings in terms of convenience, efficiency, and increased safety hazards when dealing with the needs of high-level leak detection, and urgently need improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a real-time near-infrared spectroscopy source tracing device for hazardous chemical leaks, which overcomes the challenge of detecting high-altitude leaks of hazardous chemicals and achieves a paradigm shift in the industry by enabling highly accurate source tracing and intrinsically safe control.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a real-time near-infrared spectral tracing device for hazardous chemical leaks, comprising a near-infrared spectrometer body, wherein the detection end of the near-infrared spectrometer body integrates a multi-band light source switching module, which dynamically matches the spectral absorption characteristics of different hazardous chemicals by adjusting the LED driving current; a multi-functional handle module is detachably connected to the bottom of the near-infrared spectrometer body via a quick-release interface; the multi-functional handle module has a built-in telescopic extension rod, and its segmented electronic locking mechanism has a built-in length encoder that converts the elongation into a digital signal and inputs it to the spectrometer body in real time;

[0007] The control system of the near-infrared spectrometer body performs the following actions: a) receiving the length encoding signal of the extension rod and activating the detection focal length calibration parameter for the corresponding height level; b) linking the multi-band light source switching module to match the optimal excitation wavelength according to the preset hazardous chemical library; c) fusing data from the multi-axis inertial measurement unit to dynamically compensate for the spatial attitude offset of the detection end.

[0008] This invention achieves three breakthroughs by integrating a multi-band light source switching module with the coordinated control of a length-encoded telescopic pole: 1) Improved detection accuracy: Automatically matching the optimal excitation wavelength according to different hazardous chemicals to eliminate missed detections caused by differences in material properties; 2) Doubled high-altitude detection efficiency: Real-time triggering of focal length calibration by the telescopic pole length signal to solve the problem of focal length inaccuracy during high-altitude detection; 3) Enhanced anti-interference capability: Dynamic compensation for attitude shift by integrating IMU data to ensure detection stability in high-altitude swaying environments.

[0009] Based on the optimization of the above scheme, a detachable protective tube is externally sleeved on the detection end, and a transparent protective cover is fitted to the front end of the protective tube; the surface of the protective cover is coated with an oleophobic and hydrophobic coating, and a pressure sensor is built in it to detect the installation status of the protective cover. This protection system achieves triple active protection:

[0010] Physical protection: Removable protective tubes isolate collision damage;

[0011] Chemical protection: Oleophobic and hydrophobic coatings prevent the adhesion of hazardous chemicals;

[0012] Operational protection: Pressure sensor linkage circuit lock to prevent accidental start-up in unsealed conditions.

[0013] Based on the optimization of the above scheme, the near-infrared spectrometer body has a flip-up slot on the front, and the display screen is rotatably connected to the flip-up slot via a dual-axis hinge; the flip-up slot is embedded with a posture sensor, which works in conjunction with the display screen to achieve adaptive rotation display of the screen content. This flip-up screen design creates an evolution in human-computer interaction: multi-scene visibility: the dual-axis hinge supports free hovering from 0-180°, adapting to upward / downward detection postures; intelligent display: the posture sensor automatically rotates the interface, avoiding the risk of manual screen adjustment during high-altitude operations; damage-resistant design: the protective pad inside the flip-up slot absorbs the impact of drops.

[0014] Based on the optimization of the above scheme, the telescopic extension rod is composed of at least three nested aviation aluminum sleeves; a magnetic damping release structure is set at the joint of each sleeve to achieve stepless extension and position holding. The magnetic damping telescopic rod here breaks through the limitations of the traditional model: firstly, it has stepless suspension: the magnetic damping release structure achieves self-locking at any position, eliminating the limitations of the snap-on telescopic rod; secondly, it is lightweight and high-strength: the aviation aluminum sleeve can withstand a load of 5kg without deformation when extended by 1.5 meters; and thirdly, it has anti-shake enhancement: the damping force adaptively increases with the length, suppressing end swaying during high-altitude detection.

[0015] Based on the optimization of the above scheme, the top of the multi-functional handle module is connected to the spectrometer body via a threaded connection; a storage slot is opened on the side wall of the handle, housing a spare battery compartment and a data transmission interface; the storage slot is covered by a rotating waterproof cover, and a wireless charging coil is integrated on the inner side of the cover. This invention reconstructs the field operation experience through a multi-functional handle: 1) Battery life innovation: the spare battery compartment + wireless charging coil ensures continuous operation for ≥8 hours; 2) Data interoperability: the data interface protected by the waterproof cover supports offline export / multi-machine networking; 3) Quick-release expansion: the threaded connection enables 3-second switching between handheld / stand mode.

[0016] Based on the optimization of the above scheme, the near-infrared spectrometer integrates: a) a near-infrared detection component, including a broadband LED light source and an InGaAs detector array; b) an embedded AI analysis module, used for real-time comparison with the spectral database and generation of a probability distribution map of leaked substances. The above detection achieves a leap in intelligent perception, including:

[0017] Broadband capture: The InGaAs array covers the 900-1700nm band, with a detection rate improved to 99.7%;

[0018] Real-time decision-making: The AI ​​module generates probability distribution maps on-site, replacing retrospective analysis in the laboratory;

[0019] Anti-environmental interference: The edge detector actively filters ambient light noise.

[0020] The optimized solution also includes an independent fixed support assembly with a vacuum suction cup that can adhere to metal surfaces. The universal adjustable arm connecting the suction cup replaces the multi-functional handle module with a threaded connection, enabling hands-free fixed-point monitoring. This fixed support assembly opens up unmanned monitoring scenarios, including: strong adsorption guarantee: the vacuum suction cup maintains an adsorption force of ≥200N on oily surfaces; omnidirectional coverage: the universal arm supports 360° attitude adjustment of the detection end; seamless mode switching: the threaded interface is compatible with both the threaded and handle interfaces, allowing for handheld to fixed deployment in 1 minute.

[0021] Based on the optimization of the above scheme, the control system of the near-infrared spectrometer body is built-in:

[0022] The height-focal length mapping module pre-stores the detection end focal length parameters corresponding to different extension rod lengths and automatically adjusts the focus upon receiving the length encoding signal of the extension rod.

[0023] The spatiotemporal trajectory fusion module records the three-dimensional motion trajectory of the detection end in real time through a multi-axis inertial measurement unit (IMU) and binds the trajectory coordinates with spectral data;

[0024] The leak source reverse modeling engine performs the following operations: a) Calculates the material concentration gradient vector at each point in space based on the characteristic absorption peak data output by the AI ​​analysis module; b) Iteratively solves for the coordinates of the leak source with the highest probability using a gradient descent algorithm; the risk visualization output interface overlays a 3D model of the container, a leak probability heatmap, and an emergency operation command chain on the display screen. The control system here constructs a closed-loop ecosystem for source tracing: length-encoded signals → automatic mapping of focal length parameters eliminates manual focusing errors; IMU trajectory coordinates and spectral data are fused to construct a leak diffusion time-series model; and emergency command chains directly guide on-site handling, improving response speed.

[0025] Based on the optimization of the above scheme, the leakage source reverse modeling engine is further configured as follows:

[0026] Multiple sets of decomposed convolutional units are used to separate the concentrations of each component in the mixed spectrum using the wide-band data of the InGaAs detector array and a non-negative matrix factorization algorithm.

[0027] The multi-leakage point determination unit triggers a color-coded marking instruction on the display screen when the spatial distance between the maximum probability leakage sources of different components is greater than the threshold D.

[0028] The modeling engine overcomes the challenge of mixed leakage: the NMF algorithm analyzes overlapping spectra, significantly improving the accuracy of multi-component identification; the color-coding strategy intuitively distinguishes concurrent leakage points; and differentiated alarms are automatically triggered based on the distance between leakage sources.

[0029] Based on the optimization of the above scheme, the near-infrared spectrometer body is integrated as follows:

[0030] The three-dimensional network communication module exchanges detection data with at least two similar devices through a data transmission interface;

[0031] The collaborative analysis engine performs the following actions: a) fusing leakage probability distribution maps of itself and other devices with spatial coordinates of the detection end; b) constructing a three-dimensional concentration diffusion model of the leaked substance on the container surface; c) when the model's predicted value exceeds a threshold: generating an evacuation route navigation map on the display screen; and sending a linkage signal to the external fire protection system via the data transmission interface.

[0032] The networking system of this invention achieves global intelligent prevention and control: multi-height layer devices construct a 3D detection network with a 100% blind spot elimination rate; the spatiotemporal diffusion model predicts concentration exceeding the standard 5 minutes in advance; evacuation route navigation and fire protection system are directly connected, forming a closed loop of "monitoring-decision-response".

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] 1. This device solves the problem of high-altitude inspection of hazardous chemical storage tanks through the coordinated design of magnetic damping slow-release telescopic rod and quick-release interface. The telescopic extension rod realizes stepless hovering and intelligent anti-shaking, which significantly improves the inspection stability of high-level valve groups and pipe rack tops. The length coding signal linkage automatic focusing system eliminates the manual climbing and adjustment process, transforming the inspection process from complex high-altitude operation to safe ground operation.

[0035] 2. This invention adopts a modular threaded interface and a vacuum adsorption bracket to achieve innovative free switching of equipment form. The strong adsorption base is adaptable to harsh working conditions such as oil and moisture, ensuring continuous monitoring without handheld operation. The quick-release structure supports the second-level conversion between handheld inspection and fixed monitoring. A single device can cover all scenarios such as mobile inspection, fixed-point tracking, and emergency networking, reconstructing the operation paradigm of hazardous chemical leakage monitoring.

[0036] 3. This invention eliminates the dual risks of personnel falling from heights and coming into contact with the leak source at the source, constructs a hardware-level safety closed loop, captures initial leak signals with a fixed monitoring mode, and significantly advances the early warning window; combined with intelligent networking capabilities, it forms a full-chain prevention and control system of "precise source tracing - risk prediction - coordinated response", promoting the industry's strategic transformation from passive response to proactive defense. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of the near-infrared spectroscopy real-time source tracing device for hazardous chemical leaks of the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of the near-infrared spectrometer body in this invention;

[0039] Figure 3 This is a rear cross-sectional view of the present invention;

[0040] Figure 4 This is a cross-sectional view of the fixing plate and the fixing suction cup in this invention.

[0041] In the diagram: 1. Near-infrared spectrometer body; 2. Detection end; 3. Operation button; 4. Display screen; 5. Handle; 6. Connecting threaded tube one; 7. Telescopic extension rod; 8. Protective tube; 9. Protective cover; 10. Flip groove; 11. Protective pad; 12. Sleeve; 13. Threaded head one; 14. Connecting threaded tube two; 15. Storage groove; 16. Cover plate; 17. Fixing plate; 18. Fixing suction cup; 19. Threaded head two. Detailed Implementation

[0042] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] like Figures 1-4 As shown, the near-infrared spectroscopy real-time tracing device for hazardous chemical leaks in this embodiment includes a near-infrared spectrometer body 1. The detection end 2 of the near-infrared spectrometer body 1 integrates a multi-band light source switching module, which dynamically matches the spectral absorption characteristics of different hazardous chemicals by adjusting the LED driving current. The bottom of the near-infrared spectrometer body 1 is detachably connected to a multi-functional handle module 5 via a quick-release interface. The multi-functional handle module 5 has a built-in telescopic extension rod 7, and its segmented electronic locking mechanism has a built-in length encoder that converts the elongation into a digital signal and inputs it to the spectrometer body 1 in real time.

[0044] The near-infrared spectrometer body 1 of this invention integrates a multi-band light source switching module at its detection end 2, dynamically outputting three wavelengths of 780nm, 980nm, and 1550nm through a programmable LED driving circuit to match the characteristic absorption peaks of common hazardous chemicals; the connecting threaded tube 6 at the bottom of the multi-functional handle module 5 is locked to the top of the telescopic extension rod 7 using an M12 fine thread; the Hall encoder of the segmented electronic locking mechanism inside the extension rod monitors the displacement of each sleeve in real time, converting the length signal into a 12-bit digital signal and transmitting it to the control system; the control system executes:

[0045] Call the pre-stored height-focal length mapping table (e.g., 1.2m corresponds to focal length compensation +15%) and automatically adjust the lens group at the detection end;

[0046] Based on the type of hazardous chemical selected by the user, switch to the optimal excitation wavelength (1550nm).

[0047] By integrating pitch and roll angle data from the IMU, the optical path offset at the detection end is dynamically compensated using a PID algorithm.

[0048] The control system of the near-infrared spectrometer body 1 performs the following: a) receiving the length encoding signal of the extension rod 7 and activating the detection focal length calibration parameter of the corresponding height level; b) linking the multi-band light source switching module to match the optimal excitation wavelength according to the preset hazardous chemical library; c) fusing the data of the multi-axis inertial measurement unit to dynamically compensate for the spatial attitude offset of the detection end 2.

[0049] The detection end 2 is externally fitted with a detachable protective tube 8, and a transparent protective cover 9 is fitted to the front end of the protective tube 8. The protective cover 9 is coated with an oleophobic and hydrophobic coating and has a built-in pressure sensor for detecting the installation status of the protective cover. The protective tube 8 is made of 316L stainless steel and has an EMI shielding layer embedded in its inner wall. The polycarbonate substrate of the protective cover 9 is coated with a fluorosilane oleophobic layer with a contact angle >110°. When the built-in MEMS pressure sensor detects a tightening pressure ≥3N, it sends a sealing ready signal to the control system and simultaneously activates the ITO heating film on the surface of the cover to perform self-cleaning.

[0050] The near-infrared spectrometer body 1 has a flip groove 10 on its front side, and the display screen 4 is rotatably connected to the flip groove 10 via a dual-axis hinge. The flip groove 10 has an embedded attitude sensor, which works in conjunction with the display screen 4 to achieve adaptive rotation display of the screen content. The protective pad 11 at the bottom of the flip groove 10 is made of conductive silicone foam with a Shore A40 hardness. When it is deformed under pressure, the change in resistance triggers the backlight adjustment. The dual-axis hinge has a built-in 6-axis gyroscope. When the screen flip angle θ satisfies: θ∈[0°, 90°]: portrait mode, displaying real-time spectral curves; θ∈(90°, 180°]: landscape mode, displaying a full-frame three-dimensional thermal map; the screen content automatically rotates with gravity sensing, maintaining a viewing angle error of ±15°.

[0051] The telescopic extension rod 7 is composed of at least three nested aviation aluminum sleeves 12; a magnetic damping release structure is set at the joint of each sleeve to achieve stepless extension and position holding. The three aviation aluminum sleeves 12 here have a wall thickness of 0.8mm and an interlayer gap of 50μm; neodymium iron boron permanent magnet rings (N52 grade) and copper induction coils are embedded at the joints to form a magnetoelectric coupling damper: when the sleeves move relative to each other, they cut the magnetic field lines to generate reverse eddy currents, and the damping force F=kv² (k=0.35N·s² / m²) achieves stepless buffering with stronger damping as the speed of movement increases.

[0052] The top of the multi-functional handle module 5 is connected to the spectrometer body 1 via a threaded connection. A storage slot 15 is formed on the side wall of the handle 5, housing a spare battery compartment and a data transmission interface. The storage slot 15 is covered by a rotating waterproof cover 16, with a wireless charging coil integrated inside the cover 16. The spare battery in the storage slot 15 is a lithium battery (4800mAh), supporting QC3.0 fast charging. The wireless charging coil is integrated inside the cover 16. The data transmission interface includes USB-C (10Gbps) and RS485 industrial bus, supporting Modbus protocol communication in multi-device networking.

[0053] The near-infrared spectrometer body 1 integrates: a) a near-infrared detection component, including a wide-spectrum LED light source and an InGaAs detector array; b) an embedded AI analysis module, used to compare the spectral database in real time and generate a probability distribution map of the leaked substance.

[0054] The broadband LED light source covers 850-1650nm and is driven by a 32-channel DAC; the InGaAs detector array (320×256 pixels) operates in partitions: the central 192×192 pixels acquire the spectrum, and the edge pixels calculate the ambient light noise spectrum in real time and perform digital filtering; the AI ​​analysis module is equipped with an NPU accelerator, runs a lightweight ResNet network, and outputs the probability distribution of substances within 0.2s.

[0055] It also includes an independent fixed support assembly, containing a vacuum fixing suction cup 18 that can be adsorbed onto metal surfaces; the universal adjusting arm 17 connected to the suction cup replaces the multi-functional handle module 5 through a threaded connection, realizing hand-free fixed-point monitoring. Here, the nitrile rubber sealing ring of the vacuum fixing suction cup 18 still maintains a vacuum of -85kPa on the oily surface; each of the six joints of the universal adjusting arm 17 contains a ±15° vacancy compensation mechanism, and the joint angle is monitored by a Hall sensor. The data is transmitted to the spectrometer body through the pogo pin contact of the threaded head 19 to compensate for the attitude of the detection end.

[0056] The control system of the near-infrared spectrometer body 1 is built-in:

[0057] The height-focal length mapping module pre-stores the focal length parameters of the detection end 2 corresponding to different extension rod lengths and automatically adjusts the focus upon receiving the length encoding signal of the extension rod 7.

[0058] The spatiotemporal trajectory fusion module records the three-dimensional motion trajectory of the detection end 2 in real time through a multi-axis inertial measurement unit and binds the trajectory coordinates with spectral data;

[0059] The reverse modeling engine for leakage sources performs the following operations: a) Calculates the material concentration gradient vector at each point in space based on the characteristic absorption peak data output by the AI ​​analysis module; b) Iteratively solves for the coordinates of the maximum probability leakage source using the gradient descent algorithm; and a risk visualization output interface overlays a 3D model of the container, a heat map of leakage probability, and an emergency operation command chain onto display screen 4.

[0060] In this invention, the height-focal length mapping module stores 8 sets of calibration parameters and outputs the focal length value by linear interpolation after receiving the length encoded signal; the spatiotemporal trajectory fusion module binds IMU data (100Hz sampling) with the spectrum to construct a leak concentration sequence with timestamps; the leak source reverse modeling engine takes the concentration gradient vector as input and uses the conjugate gradient method to iteratively solve the maximum likelihood leak source coordinates, and overlays AR navigation arrows on the screen to indicate the disposal path.

[0061] The leakage source reverse modeling engine is further configured as follows:

[0062] Multiple sets of decomposed convolutional units are used to separate the concentrations of each component in the mixed spectrum using the wide-band data of the InGaAs detector array and a non-negative matrix factorization algorithm.

[0063] The multi-leakage point determination unit triggers a color-coded marking instruction on the display screen 4 when the spatial distance between the maximum probability leakage sources of different components is greater than the threshold D.

[0064] The multiple decomposition convolution units here perform non-negative matrix decomposition on the raw spectral data of the InGaAs array. When the Euclidean distance between different component leakage sources is >50cm, a red / blue dual-color flashing marker is triggered.

[0065] The near-infrared spectrometer body 1 is integrated with:

[0066] The three-dimensional network communication module exchanges detection data with at least two similar devices through a data transmission interface;

[0067] The collaborative analysis engine performs the following actions: a) fusing the leakage probability distribution map of itself and other devices, and the spatial coordinates of the detection end; b) constructing a three-dimensional concentration diffusion model of the leaked substance on the container surface; c) when the model's predicted value exceeds the threshold: generating an evacuation route navigation map on display screen 4; and sending a linkage signal to the external fire protection system through the data transmission interface.

[0068] In this invention, the three-dimensional network communication module adopts the TDMA time division multiple access protocol, and the clock deviation of multiple devices is <1ms; the collaborative analysis engine constructs a concentration diffusion model using the finite element method, and the evacuation path navigation map dynamically generates disaster avoidance routes based on the Dijkstra algorithm.

[0069] The usage method of this embodiment is as follows: When using it, firstly, the handle 5 is installed inside the connecting threaded tube 6 at the lower end of the near-infrared spectrometer body 1 by rotating it, and the protective cover 9 is rotated to remove it. Then, the near-infrared spectrometer body 1 is controlled by the operation button 3 to emit near-infrared light through the detection end 2. Gas molecules in hazardous chemicals have absorption characteristics with near-infrared light of a specific wavelength. By measuring the light absorption, a correlation model between the substance concentration and the spectral signal can be established, thereby identifying the leaked substance and the leak source. After processing, the corresponding image is displayed on the screen, so that it is possible to determine in real time whether a hazardous chemical has leaked and to identify the leak source based on the leak, thus realizing the source tracing function. When it is necessary to detect the upper part of the hazardous chemical storage equipment at a higher position, the telescopic extension rod 7 is taken out from the storage slot 15. After taking it out, the telescopic extension rod 7 is stretched to its maximum length and connected to the connecting threaded tube 6. The telescopic extension rod 7 is used to raise the detection height of the near-infrared spectrometer body 1, so that the leak detection of the upper part of the hazardous chemical storage equipment can be realized, which facilitates the detection work.

[0070] Example 1:

[0071] Scenario: Suspected leak at the top flange of an 8m high toluene storage tank;

[0072] Operating Procedure: Unscrew the connecting threaded tube 6 at the bottom of handle 5 to extend the magnetic damping telescopic rod 7 to 2.1m; the control system automatically calls the height-focal length parameters and switches the light source to the 1550nm band. Align the detection end 2 with the top flange of the tank, the IMU detects a pitch angle of 32° and triggers attitude compensation; the InGaAs detector collects spectral data, the AI ​​module identifies the absorption peak at 1682nm, and generates a leak probability heat map. The display screen 4 rotates 125° to switch to landscape mode, and the AR overlay displays the leak coordinates; the reverse modeling engine outputs the handling command: "Tighten flange bolts B7".

[0073] Example 2:

[0074] Scenario: Ethylene oxide leakage occurs due to a failed agitator shaft seal in the reactor, resulting in limited space in the compartment; Equipment configuration:

[0075] Main detection device: The telescopic rod extends 1.5m and is attached to the side wall of the reactor manhole via a fixed bracket. It can be deployed at the inlet / outlet in handheld mode and retracted in telescopic rod mode.

[0076] Technical Process: The pressure sensor on the main unit's protective cover 9 detects normal sealing (≥3N pressure) and activates detection end 2; the InGaAs detector captures a weak absorption peak at 1130nm, and the AI ​​module generates a probability distribution map. The spatiotemporal trajectory fusion module constructs a concentration gradient field, and the gradient descent method iteratively pinpoints the leak source as the sealing ring on the stirring shaft; multiple sets of decomposition and convolution units eliminate solvent interference, confirming that the ethylene oxide concentration has reached the lower explosive limit of 12%. The collaborative analysis engine fuses data from the three units to construct a concentration diffusion model: predicting that the local concentration will exceed the explosive limit after 3 minutes and 40 seconds; the main unit screen displays: "Cut off stirring power → Inject nitrogen for dilution"; the slave unit triggers the nitrogen valve to open via RS485, and simultaneously triggers an audible and visual alarm to evacuate personnel.

[0077] This invention revolutionizes the paradigm of hazardous chemical leak detection, achieving precise source tracing without the need for climbing through the intelligent collaboration of a magnetically damped telescopic rod and a quick-release interface. Multi-band light source switching and attitude compensation technology ensure detection stability in complex high-altitude environments. The modular design innovatively integrates handheld inspection and fixed monitoring modes, reconstructing the workflow. Deeply exploring the hardware's potential to build a safety closed loop eliminates the risks of personnel contact with leak sources and working at heights. The intelligent networking system connects the entire chain of "source tracing-early warning-response," driving the industry's strategic transformation from passive emergency response to proactive defense and setting a new benchmark for hazardous chemical safety control.

[0078] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A real-time near-infrared spectroscopy source tracing device for hazardous chemical leaks, comprising a near-infrared spectrometer body (1), characterized in that, The detection end (2) of the near-infrared spectrometer body (1) integrates a multi-band light source switching module, which dynamically matches the spectral absorption characteristics of different hazardous chemicals by adjusting the LED driving current; the bottom of the near-infrared spectrometer body (1) is detachably connected to a multi-functional handle module (5) via a quick-release interface; the multi-functional handle module (5) has a built-in telescopic extension rod (7), and its segmented electronic locking mechanism has a built-in length encoder that converts the elongation into a digital signal and inputs it into the spectrometer body (1) in real time. The control system of the near-infrared spectrometer body (1) executes: a. Receive the length encoding signal of the extension rod (7) and activate the detection focal length calibration parameter of the corresponding height level; b. Link a multi-band light source switching module to match the optimal excitation wavelength according to the preset hazardous chemical warehouse; c. Integrate multi-axis inertial measurement unit data to dynamically compensate for the spatial attitude offset of the detection end (2); The telescopic extension rod (7) is composed of at least three levels of nested aviation aluminum sleeves (12); a magnetic damping release structure is provided at the joint of each sleeve to achieve stepless extension and position retention; The near-infrared spectrometer body (1) integrates the following: a. Near-infrared detection component, comprising a broadband LED light source and an InGaAs detector array; b. An embedded AI analysis module is used to compare the spectral database in real time and generate a probability distribution map of leaked substances; The control system of the near-infrared spectrometer body (1) is built-in: The height-focal length mapping module pre-stores the focal length parameters of the detection end (2) corresponding to different extension rod lengths and automatically adjusts the focus by receiving the length encoding signal of the extension rod (7). The spatiotemporal trajectory fusion module records the three-dimensional motion trajectory of the detection end (2) in real time through a multi-axis inertial measurement unit and binds the trajectory coordinates with the spectral data; The leak source reverse modeling engine performs the following operations: a. Calculate the concentration gradient vector of substances at each point in space based on the characteristic absorption peak data output by the AI ​​analysis module; b. Iteratively solve the coordinates of the maximum probability leakage source using the gradient descent algorithm; the risk visualization output interface overlays the container 3D model, leakage probability heat map, and emergency operation instruction chain on the display screen (4); the leakage source reverse modeling engine is further configured as follows: Multiple sets of decomposed convolutional units are used to separate the concentrations of each component in the mixed spectrum using the wide-band data of the InGaAs detector array and a non-negative matrix factorization algorithm. The multi-leakage point determination unit triggers a color-coded marking command on the display screen (4) when the spatial distance between the maximum probability leakage sources of different components is greater than the threshold D; the near-infrared spectrometer body (1) integrates: The three-dimensional network communication module exchanges detection data with at least two similar devices through a data transmission interface; Collaborative analysis engine, execution: a. Integrate the leakage probability distribution diagram of itself and other devices, and the spatial coordinates of the detection end; b. Construct a three-dimensional concentration diffusion model of the leaked substance on the container surface; c. When the model prediction value exceeds the threshold: generate an evacuation route navigation map on the display screen (4); send a linkage signal to the external fire protection system through the data transmission interface.

2. The near-infrared spectroscopy real-time source tracing device for hazardous chemical leaks according to claim 1, characterized in that, The detection end (2) is externally fitted with a detachable protective tube (8), and the front end of the protective tube (8) is fitted with a transparent protective cover (9); the surface of the protective cover (9) is coated with an oleophobic and hydrophobic coating, and a built-in pressure sensor is used to detect the installation status of the protective cover.

3. The near-infrared spectroscopy real-time source tracing device for hazardous chemical leaks according to claim 1, characterized in that, The near-infrared spectrometer body (1) has a flip groove (10) on the front, and the display screen (4) is rotatably connected to the flip groove (10) through a dual-axis hinge; the flip groove (10) is embedded with an attitude sensor, which works in conjunction with the display screen (4) to achieve adaptive rotation display of the screen content.

4. The near-infrared spectroscopy real-time source tracing device for hazardous chemical leaks according to claim 1, characterized in that, The top of the multi-functional handle module (5) is connected to the spectrometer body (1) through a threaded connection; the side wall of the multi-functional handle module (5) has a storage slot (15) with a built-in spare battery compartment and data transmission interface; the storage slot (15) is covered with a rotating waterproof cover plate (16), and the inside of the cover plate (16) integrates a wireless charging coil.

5. The near-infrared spectroscopy real-time source tracing device for hazardous chemical leaks according to claim 1, characterized in that, It also includes an independent fixed bracket assembly, which includes a vacuum fixed suction cup (18) that can be adsorbed onto a metal surface; the universal adjustment arm (17) connected to the suction cup replaces the multi-functional handle module (5) through a threaded connection to achieve hand-free fixed-point monitoring.

Images