Hydrogen inspection method, device and equipment based on hydrogen monitoring system and medium

Abstract

The invention provides a hydrogen inspection method, device and equipment based on a hydrogen monitoring system and a medium, and the method comprises the following steps: receiving a first laser signal transmitted by a first laser transmitter by using a first receiving target, and determining a first hydrogen concentration according to the received first laser signal; if the first hydrogen concentration is greater than a first preset threshold value, matching an optimal inspection strategy according to a hydrogen interval in which the first hydrogen concentration is located; and determining the inspection states of the first laser transmitter, the first receiving target, the second laser transmitter and the second receiving target according to the optimal inspection strategy, and determining the position of the current leakage point based on the first laser transmitter, the first distance measuring part, the second laser transmitter and the second distance measuring part. According to the method, the hydrogen industrial area can be effectively covered, the effect of no inspection blind spot is achieved, the hydrogen leakage detection efficiency is greatly improved, the detection means are non-contact and damage-free, and the safety of hydrogen leakage detection is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of hydrogen safety monitoring, and more specifically, to a hydrogen inspection method, device, equipment and medium based on a hydrogen monitoring system in the field of hydrogen safety monitoring. Background Art

[0002] Due to the advantages of high calorific value, easy preparation, environmental friendliness and no pollution, hydrogen is currently developing at an increasingly rapid speed and being used more and more widely. However, in addition to its high calorific value, hydrogen also has the characteristics of high fugitive emission, high burning velocity and low ignition energy. Any leakage involving the hydrogen energy system may cause combustion and explosion, resulting in major catastrophic accidents. Therefore, hydrogen refueling stations, large-scale hydrogen energy storage equipment, hydrogen production industry, hydrogen fuel cogeneration industry and hydrogen transportation industry all require fast, accurate and safe leak detection technology as the basic guarantee for the development of hydrogen energy.

[0003] In the related art, hydrogen leakage monitoring at multiple points is achieved by arranging a large number of point-shaped hydrogen concentration detectors. The principle is simple and the cost is low.

[0004] However, due to its extremely low density and strong fugitive properties, if a leak occurs in equipment exposed in an outdoor environment, hydrogen will escape directly upwards. The arrangement of point-like hydrogen concentration detectors can only monitor the hydrogen concentration in local point-like areas, and it is difficult to achieve wide-area coverage. It is impossible to conduct hydrogen leak detection tests on large-scale hydrogen energy industries. In addition, the gaps between the arrangements of multiple hydrogen concentration sensors, or small-scale hydrogen leaks in the early stages of hydrogen leakage cannot be monitored in real time, and its application is also limited. Summary of the invention

[0005] The present application provides a hydrogen inspection method, device, equipment and medium based on a hydrogen monitoring system. The method can effectively cover the hydrogen industrial area, achieve the effect of no inspection blind spots, greatly improve the efficiency of hydrogen leakage detection, and the detection means is non-contact and non-destructive, ensuring the safety of hydrogen leakage detection.

[0006] In a first aspect, a method for hydrogen inspection based on a hydrogen monitoring system is provided, wherein the hydrogen monitoring system comprises a first laser emitter and a first distance measuring device arranged on a first rail, a second laser emitter and a second distance measuring device arranged on a second rail, a first receiving target arranged on a third rail and corresponding to the first laser emitter, and a second receiving target arranged on a fourth rail and corresponding to the second laser emitter, wherein the method comprises:

[0007] Using the first receiving target to receive a first laser signal emitted by the first laser emitter, and determining a first hydrogen concentration according to the received first laser signal;

[0008] If the first hydrogen concentration is greater than a first preset threshold, matching an optimal inspection strategy according to the hydrogen interval in which the first hydrogen concentration is located;

[0009] The inspection status of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target are determined according to the optimal inspection strategy, and the current leakage point position is determined based on the first laser emitter, the first ranging device, the second laser emitter and the second ranging device.

[0010] Through the above technical scheme, the hydrogen monitoring system of the present application sets dual laser transmitters and their corresponding receiving targets on the guide rail, which can perfectly cover the area to be detected, realize patrol inspection without blind spots, and greatly improve the coverage of hydrogen leakage monitoring. The present application uses the receiving target to receive the laser signal emitted by the laser transmitter. Since the output wavelength of the laser is tunable and hydrogen absorbs the spectrum, the present application can accurately detect the hydrogen concentration by analyzing the spectrum graph, and judge whether a leak occurs by the preset hydrogen concentration threshold, and then match the best patrol strategy according to the detected hydrogen concentration, so as to switch the patrol speed based on the matched patrol strategy and leakage risk level, and take corresponding measures, which greatly improves the efficiency and real-time performance of hydrogen concentration monitoring. The hydrogen monitoring system of the present application is respectively provided with distance measuring parts on the guide rail. When a hydrogen leak is detected, the directional patrol inspection of hydrogen leak detection is realized by measuring and calculating the distance of the leak point, and the accuracy of hydrogen monitoring positioning is improved.

[0011] In combination with the first aspect, in some possible implementations, matching the optimal inspection strategy according to the hydrogen interval in which the first hydrogen concentration is located includes:

[0012] If the first hydrogen concentration is greater than the first preset threshold and the first hydrogen concentration is less than or equal to the second preset threshold, the optimal inspection strategy is to use the first inspection speed as the current inspection speed of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target;

[0013] If the first hydrogen concentration is greater than the second preset threshold and the first hydrogen concentration is less than or equal to a third preset threshold, the optimal inspection strategy is to use a second inspection speed as the current inspection speed of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target, wherein the second inspection speed is greater than the first inspection speed;

[0014] If the first hydrogen concentration is greater than the third preset threshold, the optimal patrol strategy is to use the third patrol speed as the current patrol speed of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target, wherein the third patrol speed is greater than the second patrol speed.

[0015] Through the above technical solution, the present application provides multiple inspection strategies, including: the inspection speed of the laser transmitter and the receiving target. The present application sets multiple hydrogen concentration thresholds and intervals divided by each threshold, and matches the detected hydrogen concentration with the preset multiple hydrogen concentration intervals, so as to obtain the current optimal inspection strategy. Therefore, the present application can switch the inspection speed based on the current hydrogen concentration. The higher the hydrogen concentration, the faster the inspection speed, so as to quickly avoid risks, greatly improve the response speed of hydrogen leakage inspection, and effectively avoid the occurrence of explosion accidents.

[0016] In combination with the first aspect and the above implementation manner, in some possible implementation manners, determining the current leakage point position based on the first laser emitter, the first distance measuring component, the second laser emitter and the second distance measuring component includes:

[0017] When it is determined that the first hydrogen concentration is greater than a first preset threshold, the first distance measuring component is controlled to emit a first distance measuring laser to the first laser emitter at a first moment, and a second moment when the first distance measuring component receives the first distance measuring laser reflected by the first laser emitter is recorded, and a first coordinate of the current leakage point is obtained according to the first moment and the second moment;

[0018] The second receiving target is used to receive the second laser signal emitted by the second laser emitter, and a second hydrogen concentration is determined according to the received second laser signal, and when the second hydrogen concentration is greater than the first preset threshold, the second distance measuring component is controlled to emit a second distance measuring laser to the second laser emitter at a third moment, and a fourth moment when the second distance measuring component receives the second distance measuring laser reflected by the second laser emitter is recorded, and a second coordinate of the current leakage point is obtained according to the third moment and the fourth moment;

[0019] The current leakage point position is obtained according to the first coordinate and the second coordinate.

[0020] Through the above technical solution, when hydrogen leakage is detected, the present application uses the distance measuring component to emit laser light, which is irradiated to the laser transmitter housing and then reflected back to the distance measuring component. The present application counts the time between the distance measuring component emitting laser light and the laser transmitter reflecting laser light, and combines the speed of light to obtain the distance between the distance measuring component and the laser transmitter when the hydrogen leakage point is measured. Therefore, the present application can use two laser transmitters to measure the horizontal distance and the vertical distance of the leakage point respectively, so as to realize the precise positioning of the leakage point.

[0021] In combination with the first aspect and the above implementation manner, in some possible implementation manners, after determining the current leakage point position based on the first laser emitter, the first distance measuring component, the second laser emitter and the second distance measuring component, the method includes:

[0022] If the first hydrogen concentration is greater than the first preset threshold and the first hydrogen concentration is less than or equal to the second preset threshold, the current leakage point location is recorded and a first warning message is issued;

[0023] If the first hydrogen concentration is greater than the second preset threshold and the first hydrogen concentration is less than or equal to the third preset threshold, the current leakage point location is recorded and a second warning message is issued, wherein the intensity of the second warning message is greater than the intensity of the first warning message;

[0024] If the first hydrogen concentration is greater than the third preset threshold, the current leakage point position is recorded, a third warning message is issued, and the main hydrogen pipeline switch valve and electrical switch are closed, wherein the intensity of the third warning message is greater than the intensity of the second warning message.

[0025] Through the above technical solution, since the multiple inspection strategies of the present application correspond to multiple hydrogen leakage risk levels, not only can the appropriate inspection speed be matched according to the level, but also corresponding treatment measures can be taken according to the risk of hydrogen leakage. Therefore, after realizing hydrogen concentration monitoring, the present application warns the monitoring results, and feeds back the risk level, hydrogen leakage point location and countermeasures to the mobile terminal. The fast response speed and real-time monitoring and warning method can solve the problem of hydrogen leakage in time and improve the work efficiency of hydrogen inspection.

[0026] In combination with the first aspect and the above-mentioned implementation manner, in some possible implementation manners, determining the first hydrogen concentration based on the received first laser signal includes: detecting the second harmonic component of the received first laser signal, and obtaining the first hydrogen concentration based on the detection result and a preset spectrum diagram.

[0027] Through the above technical solution, the present application analyzes the light source by irradiating the laser from the laser transmitter to the receiving target. The present application can judge whether hydrogen leakage occurs according to the depression in the spectrum graph, and thus obtain the concentration of hydrogen in the air according to the degree of the depression. Therefore, the present application can realize non-contact and non-destructive trace hydrogen concentration monitoring by laser monitoring of hydrogen concentration, thereby improving the safety of hydrogen leakage monitoring.

[0028] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, after determining the first hydrogen concentration based on the received first laser signal, it also includes: if the first hydrogen concentration is less than or equal to the first preset threshold, continuing to maintain the first laser emitter and the first receiving target to move back and forth at the initial patrol speed, and using the first receiving target to receive the first laser signal emitted by the first laser emitter until the first hydrogen concentration is greater than the first preset threshold, wherein the initial patrol speed is less than the first patrol speed.

[0029] Through the above technical solution, when the hydrogen concentration is less than the threshold value, the present application determines that no hydrogen leakage occurs at this time, and then controls the first laser emitter and the first receiving target to perform hydrogen leakage detection at the speed of regular inspection, while the second laser emitter and the second receiving target standby, waiting for the start signal of the first receiving target. Therefore, the present application controls one of the laser emitters to work when there is no hydrogen leakage through the mutual cooperation of the two laser emitters, until the laser emitter detects that the hydrogen concentration is greater than the threshold value, and sends a start signal to the other laser emitter, and the response speed is fast.

[0030] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, after determining the current leakage point location based on the first laser emitter, the first ranging device, the second laser emitter and the second ranging device, it also includes: judging whether the troubleshooting and maintenance actions are completed; if the troubleshooting and maintenance actions are completed, continuing to maintain the first laser emitter and the first receiving target to move back and forth at the initial inspection speed, and reusing the first receiving target to receive the first laser signal emitted by the first laser emitter until the first hydrogen concentration is greater than the first preset threshold.

[0031] Through the above technical solution, after completing the troubleshooting and maintenance actions, the present application needs to switch the inspection speed to the initial state, while continuing to monitor the hydrogen concentration. Therefore, the present application continuously monitors and warns of hydrogen leakage in real time while ensuring that risks are eliminated, effectively avoiding explosion accidents caused by hydrogen leakage.

[0032] In a second aspect, a hydrogen inspection device based on a hydrogen monitoring system is provided, wherein the hydrogen monitoring system includes a first laser emitter and a first distance measuring device arranged on a first rail, a second laser emitter and a second distance measuring device arranged on a second rail, a first receiving target arranged on a third rail and corresponding to the first laser emitter, and a second receiving target arranged on a fourth rail and corresponding to the second laser emitter, wherein the device includes:

[0033] a receiving module, configured to receive the first laser signal emitted by the first laser emitter using the first receiving target, and determine a first hydrogen concentration according to the received first laser signal;

[0034] A matching module, configured to match an optimal inspection strategy according to a hydrogen interval in which the first hydrogen concentration is located when the first hydrogen concentration is greater than a first preset threshold;

[0035] A determination module is used to determine the inspection status of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target according to the optimal inspection strategy, and determine the current leakage point position based on the first laser emitter, the first ranging component, the second laser emitter and the second ranging component.

[0036] In conjunction with the second aspect, in some possible implementations, the matching module is specifically configured to:

[0037] When the first hydrogen concentration is greater than the first preset threshold and the first hydrogen concentration is less than or equal to the second preset threshold, the optimal inspection strategy is to use the first inspection speed as the current inspection speed of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target;

[0038] When the first hydrogen concentration is greater than the second preset threshold and the first hydrogen concentration is less than or equal to a third preset threshold, the optimal inspection strategy is to use a second inspection speed as the current inspection speed of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target, wherein the second inspection speed is greater than the first inspection speed;

[0039] When the first hydrogen concentration is greater than the third preset threshold, the optimal patrol strategy is to use the third patrol speed as the current patrol speed of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target, wherein the third patrol speed is greater than the second patrol speed.

[0040] In conjunction with the second aspect, in some possible implementations, the determining module is specifically configured to:

[0041] When it is determined that the first hydrogen concentration is greater than a first preset threshold, the first distance measuring component is controlled to emit a first distance measuring laser to the first laser emitter at a first moment, and a second moment when the first distance measuring component receives the first distance measuring laser reflected by the first laser emitter is recorded, and a first coordinate of the current leakage point is obtained according to the first moment and the second moment;

[0042] The second receiving target is used to receive the second laser signal emitted by the second laser emitter, and a second hydrogen concentration is determined according to the received second laser signal, and when the second hydrogen concentration is greater than the first preset threshold, the second distance measuring component is controlled to emit a second distance measuring laser to the second laser emitter at a third moment, and a fourth moment when the second distance measuring component receives the second distance measuring laser reflected by the second laser emitter is recorded, and a second coordinate of the current leakage point is obtained according to the third moment and the fourth moment;

[0043] The current leakage point position is obtained according to the first coordinate and the second coordinate.

[0044] In conjunction with the second aspect, in some possible implementations, after determining the current leakage point position based on the first laser emitter, the first ranging component, the second laser emitter, and the second ranging component, the determining module is further configured to:

[0045] When the first hydrogen concentration is greater than the first preset threshold and the first hydrogen concentration is less than or equal to the second preset threshold, recording the current leakage point position and issuing a first warning message;

[0046] When the first hydrogen concentration is greater than the second preset threshold and the first hydrogen concentration is less than or equal to the third preset threshold, recording the current leakage point location and issuing a second warning message, wherein the intensity of the second warning message is greater than the intensity of the first warning message;

[0047] When the first hydrogen concentration is greater than the third preset threshold, the current leakage point position is recorded, a third warning message is issued, and the main hydrogen pipeline switch valve and electrical switch are closed, wherein the intensity of the third warning message is greater than the intensity of the second warning message.

[0048] In combination with the second aspect, in some possible implementations, the receiving module is specifically used to: detect the second harmonic component of the received first laser signal, and obtain the first hydrogen concentration according to the detection result and a preset spectrum diagram.

[0049] In combination with the second aspect, in some possible implementations, after determining the first hydrogen concentration based on the received first laser signal, the receiving module is also used to: when the first hydrogen concentration is less than or equal to the first preset threshold, continue to keep the first laser emitter and the first receiving target moving back and forth at the initial patrol speed, and use the first receiving target to receive the first laser signal emitted by the first laser emitter until the first hydrogen concentration is greater than the first preset threshold, wherein the initial patrol speed is less than the first patrol speed.

[0050] In combination with the second aspect, in some possible implementations, after determining the current leakage point location based on the first laser emitter, the first ranging device, the second laser emitter and the second ranging device, the determination module is also used to: determine whether the troubleshooting and maintenance actions are completed; when the troubleshooting and maintenance actions are completed, continue to maintain the first laser emitter and the first receiving target moving back and forth at the initial inspection speed, and reuse the first receiving target to receive the first laser signal emitted by the first laser emitter until the first hydrogen concentration is greater than the first preset threshold.

[0051] In a third aspect, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method in the first aspect or any possible implementation of the first aspect.

[0052] In a fourth aspect, a computer-readable storage medium is provided, which stores a computer program code. When the computer program code runs on a computer, the computer executes the method in the above-mentioned first aspect or any possible implementation manner of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 is a structural schematic diagram of a hydrogen monitoring system provided in an embodiment of the present application;

[0054] Figure 2 is a flow chart of a hydrogen inspection method based on a hydrogen monitoring system provided in an embodiment of the present application;

[0055] Figure 3 is a schematic diagram of changes in a laser signal according to a specific embodiment of the present application;

[0056] Figure 4 This is a flow chart of a hydrogen inspection method based on a hydrogen monitoring system according to a specific embodiment of the present application;

[0057] Figure 5 is a structural schematic diagram of a hydrogen monitoring system according to a specific embodiment of the present application;

[0058] Figure 6 is a block diagram of a hydrogen inspection device based on a hydrogen monitoring system provided in an embodiment of the present application;

[0059] Figure 7 It is a block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0061] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0062] As a new energy application method, hydrogen has the advantages of high calorific value, easy preparation, environmental friendliness and no pollution. However, hydrogen has extremely low density and strong diffusion. In outdoor environments, if exposed equipment leaks, hydrogen will directly diffuse upwards. Since hydrogen also has the characteristic of a low ignition point, it is very easy to burn and explode.

[0063] At present, point-shaped hydrogen concentration sensors are generally used to detect hydrogen leaks. Although the principle is simple and the cost is low, they can only detect hydrogen concentration in point-shaped and local areas. It is difficult to achieve wide-area coverage and it is impossible to detect hydrogen leaks in large-scale hydrogen energy industries.

[0064] If a large number of point-shaped hydrogen concentration sensors are deployed in the large-scale hydrogen energy industry, detection at multiple points can be achieved. However, the installation cost of a large number of hydrogen concentration sensors is high, which is not conducive to the on-site installation of large-scale hydrogen industries. Considering the gaps between multiple hydrogen concentration sensors, there will be blind spots when conducting hydrogen concentration detection, and it is impossible to achieve full coverage of the detection area, increasing the possibility of explosion accidents. On the other hand, although the hydrogen concentration sensor can obtain the hydrogen concentration and determine whether a hydrogen leak has occurred, it lacks an early warning device, and small-scale hydrogen leaks in the early stage of hydrogen leakage cannot be captured in time. Therefore, this method cannot achieve real-time monitoring of hydrogen concentration and has limitations in application.

[0065] In order to solve the problems existing in the above-mentioned related technologies, the present application provides a hydrogen inspection method based on a hydrogen monitoring system to improve the coverage, real-time and safety of hydrogen leakage monitoring.

[0066] Before explaining the hydrogen inspection method based on the hydrogen monitoring system provided in the embodiment of the present application, the structure of the hydrogen monitoring system of the present application is first explained.

[0067] Specifically, Figure 1 Schematic diagram of the structure of the hydrogen monitoring system of the embodiment of the present application, such as Figure 1 As shown, the hydrogen monitoring system 10 includes: a first laser emitter 11 and a first distance measuring device 12 arranged on the first guide rail A, a second laser emitter 21 and a second distance measuring device 22 arranged on the second guide rail B, a first receiving target 31 arranged on the third guide rail C and corresponding to the first laser emitter 11, and a second receiving target 41 arranged on the fourth guide rail D and corresponding to the second laser emitter 21.

[0068] Among them, the first guide rail A, the second guide rail B, the third guide rail C and the fourth guide rail D of the embodiment of the present application are used to guide the movement of the laser emitter and the receiving target, so that the laser emitter and the receiving target can reciprocate in a straight line direction. The first laser emitter 11 and the second laser emitter 21 of the embodiment of the present application are used to emit laser signals, the first receiving target 31 can receive the laser signal emitted by the first laser emitter 11, and the second receiving target 41 can receive the laser signal emitted by the second laser emitter 21. The first distance measuring component 12 of the embodiment of the present application is used to measure the distance between the reference point and the first laser emitter 11 when hydrogen leakage is detected, and the second distance measuring component 22 is used to measure the distance between the reference point and the second laser emitter 21 when hydrogen leakage is detected, so as to achieve accurate positioning of the hydrogen leakage point.

[0069] Specifically, the hydrogen monitoring system 10 of the present application includes two laser transmitters that can run along a fixed track. The laser transmitter can be a semiconductor laser transmitter. A peripheral receiving target is arranged on the opposite track of each laser transmitter, and the laser transmitter and the receiving target maintain the same speed and parallel inspection. The present application uses a scanning mechanism to form a line drawing, and the two laser transmitters are respectively arranged in the horizontal and vertical directions. Therefore, the hydrogen monitoring system of the present application covers a wide area and has no detection blind spots. In addition, in the actual implementation process, the present application also needs to build a protective canopy above the industrial site, which effectively solves the problem of hydrogen escaping upward.

[0070] Therefore, the hydrogen monitoring system 10 of the present application adopts a dual laser transmitter design, which can perfectly cover the rectangular hydrogen industrial area without inspection blind spots, effectively solving the problem of small coverage of point-shaped hydrogen sensors in related technologies. In addition, optical detection has the characteristics of non-contact and non-destructive. The present application can monitor and warn the concentration of hydrogen by measuring the concentration of trace hydrogen in the environment, which meets the application requirements of the hydrogen energy industry.

[0071] Next, the hydrogen inspection method based on the hydrogen monitoring system of the present application will be described in detail with reference to the accompanying drawings and specific embodiments.

[0072] Specifically, Figure 2It is a schematic flow chart of a hydrogen inspection method based on a hydrogen monitoring system provided in an embodiment of the present application.

[0073] For example, Figure 2 As shown, the hydrogen inspection method based on the hydrogen monitoring system includes the following steps:

[0074] In step S201, Figure 1 As shown, the first receiving target 31 is used to receive the first laser signal emitted by the first laser emitter 11, and the first hydrogen concentration is determined according to the received first laser signal.

[0075] It can be understood by those skilled in the art that when a light source of a specific wavelength passes through a gaseous substance, the light of the characteristic wavelength will be absorbed by the gaseous substance, and in this process, the gas atoms or molecules that were originally in the ground state and the low excited state in a stable state will transition to the excited state after absorbing certain wavelengths of light with a continuous distribution. Therefore, the present application utilizes the principle of gas absorption spectroscopy, emits a laser signal through a laser transmitter, and determines the hydrogen concentration according to the laser signal received by the receiving target.

[0076] Optionally, in some embodiments, determining the first hydrogen concentration according to the received first laser signal includes: detecting a second harmonic component of the received first laser signal, and obtaining the first hydrogen concentration according to the detection result and a preset spectrum diagram.

[0077] It can be understood that, based on the principle of gas absorption spectrum, the present application analyzes the light source irradiated to the receiving target after the laser transmitter emits a reference laser light source and penetrates the ambient gas. If the laser within the wavelength sweep range is not absorbed by hydrogen, then in the absorption spectrum of the receiving target, there will be no depression in the spectrum graph corresponding to the hydrogen wavelength. If, after analyzing the light source on the receiving target, it is found that there is a depression in the spectrum graph corresponding to the hydrogen wavelength, it can be determined that a hydrogen leak has occurred, and the depth of the depression is the concentration of hydrogen in the air.

[0078] Specifically, Figure 3 This is a schematic diagram of a laser signal change in a specific embodiment of the present application, such as Figure 3 As shown, Figure 3 In the four line graphs, the horizontal direction represents the laser wavelength, and the vertical direction represents the laser power. Figure 3 (1) refers to the case when the hydrogen concentration is low or no hydrogen is detected. Figure 3 (2) in the figure is the absorption of the target gas when the hydrogen concentration is b ppm. Figure 3 (3) is the absorption of the target gas when the hydrogen concentration is c ppm. Since the concentration value of c is higher than the concentration value of b, the depression in (3) is deeper than that in (2). Figure 3(4) in FIG. 4 is the absorption of the target gas when the hydrogen concentration is d ppm. Compared with the concentration value c, the deeper the concentration value d is, the deeper the depression in (4) will be.

[0079] Therefore, the present application can analyze the spectrum according to the second harmonic component of the laser signal, obtain the concentration of hydrogen according to the degree of depression of the spectrum, and then determine whether hydrogen leakage occurs according to the concentration of hydrogen.

[0080] In step S202, if the first hydrogen concentration is greater than the first preset threshold, the optimal inspection strategy is matched according to the hydrogen interval in which the first hydrogen concentration is located.

[0081] Specifically, in the initial state, the laser transmitter and receiving target in the hydrogen monitoring system of the present application run on the guide rail at a conventional inspection speed to inspect the area to be inspected. When the hydrogen concentration is detected to be higher than a certain value, the inspection strategy needs to be switched to achieve effective control of hydrogen leakage. The present application divides multiple hydrogen concentration intervals and provides multiple inspection strategies. The appropriate inspection strategy is matched by the hydrogen concentration interval in which the detected hydrogen concentration is located, thereby changing the operating speed of the laser transmitter and the receiving target to quickly and timely detect the hydrogen leakage point.

[0082] In the actual implementation process, the present application sets a first preset threshold value, which is used to compare with the obtained hydrogen concentration. When the hydrogen concentration at a certain place is greater than the first preset threshold value, the best inspection strategy is matched according to the hydrogen interval where the hydrogen concentration is located. Preferably, the first preset threshold value can be 4% (volume concentration).

[0083] Optionally, in some embodiments, Figure 1 As shown, after determining the first hydrogen concentration according to the received first laser signal, it also includes: if the first hydrogen concentration is less than or equal to the first preset threshold, continuing to keep the first laser emitter 11 and the first receiving target 31 moving back and forth at the initial inspection speed, and using the first receiving target 31 to receive the first laser signal emitted by the first laser emitter 11 until the first hydrogen concentration is greater than the first preset threshold, wherein the initial inspection speed is less than the first inspection speed.

[0084] It should be noted that the laser transmitter and receiving target of the embodiment of the present application patrol the area to be detected at a certain initial speed in the initial state, that is, the conventional patrol speed. The first patrol speed of the embodiment of the present application should be greater than the initial patrol speed. The present application does not make specific limitations on the initial patrol speed, and technical personnel in this field can set it according to actual needs.

[0085] Specifically, if Figure 1As shown, if the detected hydrogen concentration does not exceed the first preset threshold value set in this embodiment, it is determined that no hydrogen leakage occurs in the detected area. At this time, only the first laser emitter 11 and the first receiving target 31 need to move back and forth at the initial inspection speed, that is, the conventional inspection speed, while the second laser emitter 21 and the second receiving target 22 stand by and wait for the start signal of the first receiving target 31.

[0086] Optionally, in some embodiments, Figure 1 As shown, the optimal patrol strategy is matched according to the hydrogen interval in which the first hydrogen concentration is located, including: if the first hydrogen concentration is greater than the first preset threshold value and the first hydrogen concentration is less than or equal to the second preset threshold value, then the optimal patrol strategy is to use the first patrol speed as the current patrol speed of the first laser emitter 11, the first receiving target 31, the second laser emitter 21 and the second receiving target 41; if the first hydrogen concentration is greater than the second preset threshold value and the first hydrogen concentration is less than or equal to the third preset threshold value, then the optimal patrol strategy is to use the second patrol speed as the current patrol speed of the first laser emitter 11, the first receiving target 31, the second laser emitter 21 and the second receiving target 41, wherein the second patrol speed is greater than the first patrol speed; if the first hydrogen concentration is greater than the third preset threshold value, then the optimal patrol strategy is to use the third patrol speed as the current patrol speed of the first laser emitter 11, the first receiving target 31, the second laser emitter 21 and the second receiving target 41, wherein the third patrol speed is greater than the second patrol speed.

[0087] In this embodiment, combined with Figure 1 As shown, the present application divides a plurality of hydrogen concentration intervals. When the hydrogen concentration is between a first preset threshold value and a second preset threshold value, the current inspection speed of the first laser emitter 11, the first receiving target 31, the second laser emitter 21, and the second receiving target 41 is a first inspection speed; when the hydrogen concentration is between the second preset threshold value and a third preset threshold value, the current inspection speed of the first laser emitter 11, the first receiving target 31, the second laser emitter 21, and the second receiving target 41 is a second inspection speed, and the second inspection speed is greater than the first inspection speed; when the hydrogen concentration is greater than the third preset threshold value, the current inspection speed of the first laser emitter 11, the first receiving target 31, the second laser emitter 21, and the second receiving target 41 is a third inspection speed, and the third inspection speed is greater than the second inspection speed.

[0088] In addition, the present application does not make any specific limitation on the numerical values ​​of the first preset threshold, the second preset threshold, the third preset threshold, the first inspection speed, the second inspection speed and the third inspection speed. Technical personnel in this field can set them according to actual conditions, such as the area size of the area to be detected.

[0089] For example, since the explosion limit of hydrogen is 4% to 75.6% (volume concentration), in this embodiment, the first preset threshold is 4%, the second preset threshold is 24%, the third preset threshold is 54%, the first inspection speed is 10am / s, the second inspection speed is 20am / s, and the third inspection speed is 50am / s. In the initial state, the laser transmitter and the receiving target inspect the area to be detected at a speed of am / s. When the hydrogen concentration is detected to be 34%, the best matching inspection strategy is to control the laser transmitter and the receiving target to inspect the area to be detected at a speed of 10m / s.

[0090] It can be seen from this that the greater the hydrogen concentration, the faster the inspection speed. Furthermore, the present application can match the optimal inspection strategy according to the range of the detected hydrogen concentration, speed up the inspection speed, achieve timely response of hydrogen leak monitoring, and solve the problem of rapid hydrogen escape and easy explosion accidents.

[0091] In step S203, if Figure 1 As shown, the inspection status of the first laser emitter 11, the first receiving target 31, the second laser emitter 21 and the second receiving target 41 are determined according to the optimal inspection strategy, and the current leakage point position is determined based on the first laser emitter 11, the first ranging device 12, the second laser emitter 21 and the second ranging device 22.

[0092] It is understandable that if Figure 1 As shown, after the hydrogen leakage is detected, the present application needs to determine the specific location of the leakage point in order to take corresponding remedial measures for the leakage point. Therefore, the present application needs to locate the hydrogen leakage point based on the first laser emitter 11, the first ranging device 12, the second laser emitter 21 and the second ranging device 22.

[0093] Optionally, in some embodiments, Figure 1As shown, the current leakage point position is determined based on the first laser emitter 11, the first distance measuring component 12, the second laser emitter 21 and the second distance measuring component 22, including: when it is determined that the first hydrogen concentration is greater than the first preset threshold, the first distance measuring component 12 is controlled to emit the first distance measuring laser to the first laser emitter 11 at a first moment, and the second moment when the first distance measuring component 12 receives the first distance measuring laser reflected by the first laser emitter 11 is recorded, and the first coordinates of the current leakage point are obtained according to the first moment and the second moment; the second laser signal emitted by the second laser emitter 21 is received by the second receiving target 41, and the second hydrogen concentration is determined according to the received second laser signal, and when the second hydrogen concentration is greater than the first preset threshold, the second distance measuring component 22 is controlled to emit the second distance measuring laser to the second laser emitter 21 at a third moment, and the fourth moment when the second distance measuring component 22 receives the second distance measuring laser reflected by the second laser emitter 21 is recorded, and the second coordinates of the current leakage point are obtained according to the third moment and the fourth moment; the current leakage point position is obtained according to the first coordinate and the second coordinate.

[0094] Among them, the first ranging component 12 and the second ranging component 22 of the present application can be ranging sensors, which can emit ranging lasers to the laser emitter. Therefore, the present application can calculate the distance between the ranging component and the laser emitter according to the duration of the ranging component emitting the laser to the laser emitter and the duration of the laser signal reflecting back to the ranging component, thereby determining the location of the hydrogen leakage point.

[0095] It should be noted that if Figure 1 As shown, the first distance measuring component 12 and the second distance measuring component 22 are perpendicular to each other. The present application uses the two perpendicular distance measuring components as reference points. In this embodiment, the distance between the first distance measuring component 12 and the first laser emitter 11 when the leakage point is measured is recorded as X, and the distance between the second distance measuring component 22 and the second laser emitter 21 when the leakage point is measured is recorded as Y. Therefore, the present application can obtain the accurate coordinates of the hydrogen leakage point as (X, Y).

[0096] Specifically, if Figure 1 As shown, in this embodiment, the first moment is T1, and the second moment is T2, that is, the time length of the first ranging component 12 emitting the first ranging laser to the first laser emitter 11 is T1, and the first ranging laser is reflected after being irradiated to the housing of the first laser emitter 11, and the time length of the first ranging laser reflected back to the first ranging component 12 is T2, then the distance X between the first ranging component 12 and the first laser emitter 11, that is, the calculation formula of the first coordinate in the embodiment of the present application is:

[0097]

[0098] Furthermore, if Figure 1As shown, the hydrogen concentration is determined according to the second laser signal received by the second receiving target 41. When the hydrogen concentration is detected to be greater than the first preset threshold, the leakage point is located, that is, the present application needs to determine the distance between the second distance measuring component 22 and the second laser emitter 21 when the leakage point is measured. In this embodiment, the third moment is T3, and the fourth moment is T4, that is, the duration of the second distance measuring component 22 emitting the second distance measuring laser to the second laser emitter 21 is T3, and the second distance measuring laser will be reflected after irradiating the housing of the second laser emitter 21, and the duration of the second distance measuring laser reflecting back to the second distance measuring component 22 is T4, then the distance Y between the second distance measuring component 22 and the second laser emitter 21, that is, the calculation formula of the second coordinate in the embodiment of the present application is:

[0099]

[0100] Therefore, when the dual laser generator of the present application detects a hydrogen leak, it uses two ranging components to emit lasers to the corresponding laser emitters respectively. Based on the principle of light reflection, it calculates the distance between the ranging component and the laser emitter when the leak point is measured, and finally determines the exact coordinates of the hydrogen leak point.

[0101] Optionally, in some embodiments, Figure 1 As shown, after the current leakage point position is determined based on the first laser emitter 11, the first distance measuring device 12, the second laser emitter 21 and the second distance measuring device 22, it includes: if the first hydrogen concentration is greater than the first preset threshold value and the first hydrogen concentration is less than or equal to the second preset threshold value, the current leakage point position is recorded, and a first warning message is issued; if the first hydrogen concentration is greater than the second preset threshold value and the first hydrogen concentration is less than or equal to the third preset threshold value, the current leakage point position is recorded, and a second warning message is issued, wherein the intensity of the second warning message is greater than the intensity of the first warning message; if the first hydrogen concentration is greater than the third preset threshold value, the current leakage point position is recorded, and a third warning message is issued, and the main hydrogen pipeline switch valve and the electrical switch are closed, wherein the intensity of the third warning message is greater than the intensity of the second warning message.

[0102] Specifically, after detecting a hydrogen leak and determining the specific leak point, the application needs to take different countermeasures based on the amount of hydrogen leakage, that is, the hydrogen concentration. The application divides different risk levels according to the hydrogen concentration, matches appropriate warning information and issues a warning according to the interval in which the detected hydrogen concentration is located, and the greater the hydrogen concentration, the greater the intensity of the warning information matched.

[0103] In addition, this application does not specifically limit the first warning information, the second warning information, and the third warning information, and those skilled in the art can set them according to actual needs. For example, the first warning information in the embodiment of this application can be "Please ask the maintenance personnel to confirm the leakage on site, complete troubleshooting and maintenance"; the second warning information can be "The maintenance personnel confirm whether personnel evacuation is required, confirm the leakage on site, and complete troubleshooting and maintenance"; the third warning information can be "The maintenance personnel immediately call the police, close the switch valve and electrical switch of the main hydrogen pipeline, and use the sound and light alarm mechanism to notify the personnel in the area to evacuate quickly."

[0104] Optionally, in some embodiments, Figure 1 As shown, after the current leakage point position is determined based on the first laser emitter 11, the first ranging device 12, the second laser emitter 21 and the second ranging device 22, it also includes: judging whether the troubleshooting and maintenance actions are completed; if the troubleshooting and maintenance actions are completed, then continue to keep the first laser emitter 11 and the first receiving target 31 moving back and forth at the initial inspection speed, and reuse the first receiving target 31 to receive the first laser signal emitted by the first laser emitter until the first hydrogen concentration is greater than the first preset threshold value.

[0105] Specifically, if Figure 1 As shown, after determining the current hydrogen leakage point, the present application will perform troubleshooting and maintenance work on the leakage point. While ensuring that the maintenance work is completed, the present application controls the first laser emitter 11 and the first receiving target 31 to continue to inspect the inspection area at the speed of regular inspection to avoid the recurrence of hydrogen leakage and avoid the risk of explosion.

[0106] In order to enable those skilled in the art to further understand the hydrogen inspection method based on the hydrogen monitoring system of the embodiment of the present application, the following examples are listed in combination with the accompanying drawings to schematically illustrate the specific process of the method.

[0107] Specifically, Figure 4 This is a flow chart of a hydrogen inspection method based on a hydrogen monitoring system according to a specific embodiment of the present application. Figure 5 This is a structural diagram of a hydrogen monitoring system according to a specific embodiment of the present application. Figure 5 As shown, in this embodiment, the dual laser transmitters are respectively a dynamic laser transmitter and a servo laser transmitter. The dynamic laser transmitter corresponds to the receiving target 1 and uses the ranging sensor 1 to measure the distance. The servo laser transmitter corresponds to the receiving target 2 and uses the ranging sensor 2 to measure the distance. Figure 4 As shown, the hydrogen inspection method based on the hydrogen monitoring system includes the following steps:

[0108] Step S401, the servo laser transmitter is on standby, waiting to receive a start signal from target 1;

[0109] Step S402, the dynamic laser transmitter performs routine inspection along the guide rail at a speed of am / s, and the process is to emit a test laser with tunable wavelength in pulses;

[0110] Step S403, receiving the target 1 and the dynamic laser transmitter to move in a directional manner on the guide rail at the same speed;

[0111] Step S404, the receiving target 1 receives the laser signal emitted by the dynamic laser emitter, detects the second harmonic component of the transmitted light, and measures the hydrogen concentration;

[0112] Step S405, determining whether the peak hydrogen concentration measured by the receiving target 1 is greater than b ppm, if the hydrogen concentration is greater than b ppm, executing step S406, otherwise executing step S401;

[0113] Step S406, determining whether the peak hydrogen concentration is greater than c ppm, if the hydrogen concentration is greater than c ppm, executing step S407, otherwise executing step S415;

[0114] Step S407, the distance measuring sensor emits a laser beam, calculates the time it takes for the laser beam to be emitted back, and obtains the distance X from the reference point when the dynamic laser emitter measures the leakage point;

[0115] Step S408: The dynamic laser transmitter inspection speed is increased to 10 a m / s, and the inspection is continued back and forth to confirm whether there are any leaks in other areas;

[0116] Step S409, the servo laser transmitter starts to patrol and locate along the guide rail at a speed of 10 a m / s, and the process is to emit a wavelength-tunable test laser in pulses;

[0117] Step S410, the receiving target 2 receives the laser signal emitted by the servo laser transmitter, detects the second harmonic component of the transmitted light, and measures the hydrogen concentration;

[0118] Step S411, the distance measuring sensor emits a laser beam, calculates the time it takes for the laser beam to be emitted back, and obtains the distance Y from the reference point when the servo laser transmitter measures the leakage point;

[0119] Step S412, maintaining the current high-speed inspection state, recording the location of each leakage point and reporting to the operation and maintenance personnel;

[0120] Step S413, maintenance personnel conduct on-site confirmation of the leakage situation and complete troubleshooting and maintenance;

[0121] Step S414, exit the high-speed inspection state, the dynamic laser transmitter resumes the normal inspection speed of am / s, the servo laser transmitter stands by and does not move, and the process ends.

[0122] Step S415, determining whether the peak hydrogen concentration is greater than d ppm, if the hydrogen concentration is greater than d ppm, executing step S425, otherwise executing step S416;

[0123] Step S416, the distance measuring sensor emits a laser beam, calculates the time it takes for the laser beam to be emitted back, and obtains the distance X from the reference point when the dynamic laser emitter measures the leakage point;

[0124] Step S417: the system alerts the operation and maintenance personnel of the hydrogen leakage, and the regional sound and light alarm mechanism is activated simultaneously. The risk area archives the current work and waits for the operation and maintenance personnel to notify and confirm whether evacuation is required;

[0125] Step S418: The dynamic laser transmitter inspection speed is increased to 20 a m / s, and the inspection is continued back and forth to confirm whether there are any leaks in other areas;

[0126] Step S419, the servo laser transmitter starts to patrol and locate along the guide rail at a speed of 20 a m / s, and the process is to emit a wavelength-tunable test laser in pulses;

[0127] Step S420, the receiving target 2 receives the laser signal emitted by the servo laser transmitter, detects the second harmonic component of the transmitted light, and measures the hydrogen concentration;

[0128] Step S421, the distance measuring sensor emits a laser beam, calculates the time it takes for the laser beam to be emitted back, and obtains the distance Y from the reference point when the servo laser transmitter measures the leakage point;

[0129] Step S422, maintaining the current high-speed inspection state, summarizing the locations of each leakage point and reporting to the operation and maintenance personnel, who confirm whether personnel evacuation is required;

[0130] Step S423, maintenance personnel conduct on-site confirmation of the leakage situation and complete troubleshooting and maintenance;

[0131] Step S424, exit the high-speed inspection state, the dynamic laser transmitter resumes the normal inspection speed of am / s, the servo laser transmitter stands by and ends the process.

[0132] Step S425, the distance measuring sensor emits a laser beam, calculates the time it takes for the laser beam to be emitted back, and obtains the distance X from the reference point when the dynamic laser emitter measures the leakage point;

[0133] Step S426: The area enters an emergency state, and the operation and maintenance personnel immediately report the hydrogen leakage; close the main hydrogen pipeline switch valve and electrical switch; turn on the regional sound and light alarm mechanism; and personnel in the risk area evacuate immediately;

[0134] Step S427, the dynamic laser transmitter inspection speed is increased to 50a m / s, and the inspection is continued back and forth to confirm whether there are any leakage points in other areas;

[0135] Step S428, the servo laser transmitter starts to patrol and locate along the guide rail at a speed of 50 a m / s, and the process is to emit a test laser with tunable wavelength in pulses;

[0136] Step S429, the receiving target 2 receives the laser signal emitted by the servo laser transmitter, detects the second harmonic component of the transmitted light, and measures the hydrogen concentration;

[0137] Step S430, the distance measuring sensor emits a laser beam, calculates the time it takes for the laser beam to be emitted back, and obtains the distance Y from the reference point when the servo laser transmitter measures the leakage point;

[0138] Step S431, maintain the current high-speed inspection status, summarize the location of each leakage point and report it to the operation and maintenance personnel. The operation and maintenance personnel will conduct on-site confirmation of the leakage situation and complete troubleshooting and maintenance;

[0139] Step S432, exit the high-speed inspection state, the dynamic laser transmitter resumes the normal inspection speed of am / s, the servo laser transmitter stands by and ends the process.

[0140] Therefore, based on the above embodiments, it can be known that the present application arranges a laser transmitter and a receiving target in the hydrogen monitoring system, and based on the tunable output wavelength of the semiconductor laser, uses the absorption spectrum of the target gas hydrogen to detect the hydrogen concentration and leakage. The dynamic laser generator patrols along the track at a conventional speed, and will adjust the patrol speed based on the hydrogen concentration detected within the coverage area, switching to emergency patrol and urgent patrol; the servo laser generator will match the directional patrol after the dynamic laser generator detects a hydrogen leak, and locate the leak point. Ultimately, the present application can take measures such as only alarming, opening the regional sound and light alarm mechanism, or closing the main hydrogen pipeline switch valve and electrical switch based on the amount of hydrogen leakage.

[0141] In summary, the present application is based on a hydrogen inspection method of a hydrogen monitoring system, which uses a first receiving target to receive a first laser signal emitted by a first laser transmitter, and determines a first hydrogen concentration based on the received first laser signal. When the first hydrogen concentration is greater than a first preset threshold, the best inspection strategy is matched according to the hydrogen interval where the first hydrogen concentration is located, and the inspection status of the first laser transmitter, the first receiving target, the second laser transmitter, and the second receiving target is determined according to the best inspection strategy, and the current leakage point position is determined based on the first laser transmitter, the first distance measuring device, the second laser transmitter, and the second distance measuring device. This method can effectively cover the hydrogen industrial area, achieve the effect of no inspection blind spots, greatly improve the efficiency of hydrogen leakage detection, and the detection means are non-contact and non-destructive, ensuring the safety of hydrogen leakage detection.

[0142] Figure 5 It is a structural schematic diagram of a hydrogen inspection device based on a hydrogen monitoring system provided in an embodiment of the present application.

[0143] In this embodiment, the hydrogen monitoring system can be Figure 1 The embodiment shown is a hydrogen monitoring system 10.

[0144] For example, Figure 5 As shown, the hydrogen inspection device 1000 based on the hydrogen monitoring system may include: a receiving module 100 , a matching module 200 and a determining module 300 .

[0145] Among them, the receiving module 100 is used to use the first receiving target to receive the first laser signal emitted by the first laser emitter, and determine the first hydrogen concentration based on the received first laser signal; the matching module 200 is used to match the optimal inspection strategy according to the hydrogen interval in which the first hydrogen concentration is located when the first hydrogen concentration is greater than the first preset threshold; the determination module 300 is used to determine the inspection status of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target according to the optimal inspection strategy, and determine the current leakage point position based on the first laser emitter, the first ranging device, the second laser emitter and the second ranging device.

[0146] Optionally, in some embodiments, the matching module 200 is specifically used to: when the first hydrogen concentration is greater than a first preset threshold value and the first hydrogen concentration is less than or equal to a second preset threshold value, the optimal patrol strategy is to use the first patrol speed as the current patrol speed of the first laser emitter, the first receiving target, the second laser emitter, and the second receiving target; when the first hydrogen concentration is greater than the second preset threshold value and the first hydrogen concentration is less than or equal to a third preset threshold value, the optimal patrol strategy is to use the second patrol speed as the current patrol speed of the first laser emitter, the first receiving target, the second laser emitter, and the second receiving target, wherein the second patrol speed is greater than the first patrol speed; when the first hydrogen concentration is greater than the third preset threshold value, the optimal patrol strategy is to use the third patrol speed as the current patrol speed of the first laser emitter, the first receiving target, the second laser emitter, and the second receiving target, wherein the third patrol speed is greater than the second patrol speed.

[0147] Optionally, in some embodiments, the determination module 300 is specifically used to: when it is determined that the first hydrogen concentration is greater than the first preset threshold, control the first ranging component to emit a first ranging laser to the first laser emitter at a first moment, and record the second moment when the first ranging component receives the first ranging laser reflected by the first laser emitter, and obtain the first coordinates of the current leakage point according to the first moment and the second moment; use the second receiving target to receive the second laser signal emitted by the second laser emitter, and determine the second hydrogen concentration according to the received second laser signal, and when the second hydrogen concentration is greater than the first preset threshold, control the second ranging component to emit a second ranging laser to the second laser emitter at a third moment, and record the fourth moment when the second ranging component receives the second ranging laser reflected by the second laser emitter, and obtain the second coordinates of the current leakage point according to the third moment and the fourth moment; obtain the current leakage point position according to the first coordinates and the second coordinates.

[0148] Optionally, in some embodiments, after determining the current leakage point location based on the first laser emitter, the first ranging device, the second laser emitter and the second ranging device, the determination module 300 is also used to: when the first hydrogen concentration is greater than the first preset threshold and the first hydrogen concentration is less than or equal to the second preset threshold, record the current leakage point location and issue a first warning message; when the first hydrogen concentration is greater than the second preset threshold and the first hydrogen concentration is less than or equal to the third preset threshold, record the current leakage point location and issue a second warning message, wherein the intensity of the second warning message is greater than the intensity of the first warning message; when the first hydrogen concentration is greater than the third preset threshold, record the current leakage point location, issue a third warning message, and close the main hydrogen pipeline switch valve and the electrical switch, wherein the intensity of the third warning message is greater than the intensity of the second warning message.

[0149] Optionally, in some embodiments, the receiving module 100 is specifically used to: detect the second harmonic component of the received first laser signal, and obtain the first hydrogen concentration according to the detection result and a preset spectrum diagram.

[0150] Optionally, in some embodiments, after determining the first hydrogen concentration based on the received first laser signal, the receiving module 100 is further used to: when the first hydrogen concentration is less than or equal to a first preset threshold, continue to keep the first laser emitter and the first receiving target moving back and forth at an initial patrol speed, and use the first receiving target to receive the first laser signal emitted by the first laser emitter until the first hydrogen concentration is greater than the first preset threshold, wherein the initial patrol speed is less than the first patrol speed.

[0151] Optionally, in some embodiments, after determining the current leakage point location based on the first laser emitter, the first ranging device, the second laser emitter and the second ranging device, the determination module 300 is further used to: determine whether the troubleshooting and maintenance actions are completed; when the troubleshooting and maintenance actions are completed, continue to maintain the first laser emitter and the first receiving target to move back and forth at the initial inspection speed, and reuse the first receiving target to receive the first laser signal emitted by the first laser emitter until the first hydrogen concentration is greater than the first preset threshold.

[0152] In this embodiment, the functional modules of the device can be divided according to the above method example. For example, each functional module can be corresponded, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware. It should be noted that the division of modules in this embodiment is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0153] It should be understood that the hydrogen inspection device based on the hydrogen monitoring system provided in this embodiment is used to execute the above-mentioned hydrogen inspection method based on the hydrogen monitoring system, and therefore can achieve the same effect as the above-mentioned implementation method, which will not be repeated here.

[0154] The present application also provides an electronic device, Figure 6 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, such as Figure 6 As shown, the vehicle may include a memory and a processor, wherein the memory stores executable program code, and the processor is used to call and execute the executable program code to execute the heating method of the hydrogen circulation pump provided in the embodiment of the present application.

[0155] This embodiment also provides a computer-readable storage medium, in which a computer program code is stored. When the computer program code is executed on a computer, the computer executes the above-mentioned related method steps to implement the hydrogen inspection method based on the hydrogen monitoring system provided in the above embodiment.

[0156] The computer-readable storage medium provided in this embodiment is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, which will not be repeated here.

[0157] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hydrogen inspection method based on a hydrogen monitoring system, characterized in that: The hydrogen monitoring system comprises a first laser emitter and a first distance measuring device arranged on a first rail, a second laser emitter and a second distance measuring device arranged on a second rail, a first receiving target arranged on a third rail and corresponding to the first laser emitter, and a second receiving target arranged on a fourth rail and corresponding to the second laser emitter, wherein the method comprises the following steps: Using the first receiving target to receive a first laser signal emitted by the first laser emitter, and determining a first hydrogen concentration according to the received first laser signal; If the first hydrogen concentration is greater than a first preset threshold, matching an optimal inspection strategy according to the hydrogen interval in which the first hydrogen concentration is located; and The inspection status of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target are determined according to the optimal inspection strategy, and the current leakage point position is determined based on the first laser emitter, the first ranging device, the second laser emitter and the second ranging device.

2. The method according to claim 1, characterized in that The matching of the optimal inspection strategy according to the hydrogen interval in which the first hydrogen concentration is located includes: If the first hydrogen concentration is greater than the first preset threshold and the first hydrogen concentration is less than or equal to the second preset threshold, the optimal inspection strategy is to use the first inspection speed as the current inspection speed of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target; If the first hydrogen concentration is greater than the second preset threshold and the first hydrogen concentration is less than or equal to a third preset threshold, the optimal inspection strategy is to use a second inspection speed as the current inspection speed of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target, wherein the second inspection speed is greater than the first inspection speed; If the first hydrogen concentration is greater than the third preset threshold, the optimal patrol strategy is to use the third patrol speed as the current patrol speed of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target, wherein the third patrol speed is greater than the second patrol speed.

3. The method according to claim 2, characterized in that The determining the current leakage point position based on the first laser emitter, the first distance measuring component, the second laser emitter and the second distance measuring component comprises: When it is determined that the first hydrogen concentration is greater than a first preset threshold, the first distance measuring component is controlled to emit a first distance measuring laser to the first laser emitter at a first moment, and a second moment when the first distance measuring component receives the first distance measuring laser reflected by the first laser emitter is recorded, and a first coordinate of the current leakage point is obtained according to the first moment and the second moment; The second receiving target is used to receive the second laser signal emitted by the second laser emitter, and a second hydrogen concentration is determined according to the received second laser signal, and when the second hydrogen concentration is greater than the first preset threshold, the second distance measuring component is controlled to emit a second distance measuring laser to the second laser emitter at a third moment, and a fourth moment when the second distance measuring component receives the second distance measuring laser reflected by the second laser emitter is recorded, and a second coordinate of the current leakage point is obtained according to the third moment and the fourth moment; The current leakage point position is obtained according to the first coordinate and the second coordinate.

4. The method according to claim 2 or 3, characterized in that: After the current leakage point position is determined based on the first laser emitter, the first distance measuring component, the second laser emitter and the second distance measuring component, the method includes: If the first hydrogen concentration is greater than the first preset threshold and the first hydrogen concentration is less than or equal to the second preset threshold, the current leakage point location is recorded and a first warning message is issued; If the first hydrogen concentration is greater than the second preset threshold and the first hydrogen concentration is less than or equal to the third preset threshold, the current leakage point location is recorded and a second warning message is issued, wherein the intensity of the second warning message is greater than the intensity of the first warning message; If the first hydrogen concentration is greater than the third preset threshold, the current leakage point position is recorded, a third warning message is issued, and the main hydrogen pipeline switch valve and electrical switch are closed, wherein the intensity of the third warning message is greater than the intensity of the second warning message.

5. The method according to claim 2, characterized in that: The determining a first hydrogen concentration according to the received first laser signal includes: The second harmonic component of the received first laser signal is detected, and the first hydrogen concentration is obtained according to the detection result and a preset spectrum diagram.

6. The method according to claim 5, characterized in that After determining the first hydrogen concentration according to the received first laser signal, the method further includes: If the first hydrogen concentration is less than or equal to the first preset threshold, the first laser emitter and the first receiving target continue to move back and forth at the initial patrol speed, and the first receiving target is used to receive the first laser signal emitted by the first laser emitter until the first hydrogen concentration is greater than the first preset threshold, wherein the initial patrol speed is less than the first patrol speed.

7. The method according to claim 1, characterized in that After determining the current leakage point location based on the first laser transmitter, the first distance measuring component, the second laser transmitter and the second distance measuring component, the method further includes: Determine whether troubleshooting and maintenance actions are completed; If the troubleshooting and maintenance actions are completed, the first laser emitter and the first receiving target continue to move back and forth at the initial inspection speed, and the first receiving target is reused to receive the first laser signal emitted by the first laser emitter until the first hydrogen concentration is greater than the first preset threshold.

8. A hydrogen inspection device based on a hydrogen monitoring system, characterized in that: The hydrogen monitoring system comprises a first laser emitter and a first distance measuring device arranged on a first rail, a second laser emitter and a second distance measuring device arranged on a second rail, a first receiving target arranged on a third rail and corresponding to the first laser emitter, and a second receiving target arranged on a fourth rail and corresponding to the second laser emitter, wherein the device comprises: a receiving module, configured to receive the first laser signal emitted by the first laser emitter using the first receiving target, and determine a first hydrogen concentration according to the received first laser signal; a matching module, configured to match an optimal inspection strategy according to a hydrogen interval in which the first hydrogen concentration is located when the first hydrogen concentration is greater than a first preset threshold; and A determination module is used to determine the inspection status of the first laser emitter, the first receiving target, the second laser emitter and the second receiving target according to the optimal inspection strategy, and determine the current leakage point position based on the first laser emitter, the first ranging device, the second laser emitter and the second ranging device.

9. An electronic device, characterized in that: The electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the program to implement the hydrogen inspection method based on the hydrogen monitoring system as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed, the hydrogen inspection method based on the hydrogen monitoring system as described in any one of claims 1 to 7 is implemented.

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