A harmful gas detection alarm method and system

Abstract

The present application relates to a harmful gas detection and alarm method and system, belonging to the field of harmful gas alarm technology, which includes obtaining leakage information of harmful gases at each leakage detection point in the working area; obtaining diffusion information of harmful gases at each diffusion detection point in the working area; screening all leakage detection points based on the leakage information of harmful gases to obtain the main leakage points; screening all diffusion detection points based on the diffusion information of harmful gases to obtain the main diffusion points; generating an alarm signal based on the leakage information corresponding to the main leakage points and the diffusion information corresponding to the main diffusion points. The alarm signal is generated based on the main leakage points and the main diffusion points, that is, an alarm is issued in places where the leakage or diffusion of harmful gases is more serious; the present application has the effect of prompting nearby personnel to evacuate along a path with less harmful gases.

Description

Technical Field

[0001] The present invention relates to the technical field of harmful gas alarm technology, and in particular to a harmful gas detection and alarm method and system. Background Art

[0002] Harmful gases are gases that have adverse effects on human or animal health, or that, while not harmful to human or animal health, cause discomfort and affect their comfort. Harmful gases can be categorized by their toxic properties as irritants to the eyes and respiratory mucosa, and asphyxiating gases as toxic gases that can cause hypoxia and, in severe cases, endanger human life.

[0003] Currently, in factories where hazardous gases may be generated, multiple hazardous gas detectors are typically installed to monitor for these gases. When hazardous gases are detected, the detectors sound an alarm, prompting nearby personnel to evacuate promptly. However, due to the rapid diffusion of gases, multiple hazardous gas detectors may sound alarms simultaneously when hazardous gases are generated, making it difficult for nearby personnel to identify the most severe accumulation of hazardous gases and, consequently, to find evacuation routes with less hazardous gases. Summary of the Invention

[0004] In order to facilitate prompting nearby personnel to evacuate along a path with less harmful gases, the present application provides a harmful gas detection alarm method and system.

[0005] In the first aspect, the present application provides a method for detecting and alarming harmful gases, which adopts the following technical solutions:

[0006] A harmful gas detection and alarm method, comprising:

[0007] Obtain the leakage information of harmful gases at each leak detection point in the working area;

[0008] Obtain the diffusion information of harmful gases at each diffusion detection point in the working area;

[0009] According to the leakage information of harmful gases, all leakage detection points are screened to obtain the main leakage points;

[0010] According to the diffusion information of harmful gases, all diffusion detection points are screened to obtain the main diffusion points;

[0011] An alarm signal is generated based on the leakage information corresponding to the main leakage points and the diffusion information corresponding to the main diffusion points.

[0012] By adopting the above technical solution, the leakage information of harmful gases at each leakage detection point in the working area is obtained, and all leakage detection points are screened according to the leakage information to obtain the main leakage point, that is, the leakage position of the harmful gas is obtained; the diffusion information of harmful gases at each diffusion detection point in the working area is obtained, and all diffusion detection points are screened according to the diffusion information of the harmful gases to obtain the main diffusion point, that is, the main diffusion position of the harmful gas is obtained, and an alarm signal is generated according to the main leakage point and the main diffusion point. Compared with alarms at all leakage detection points and diffusion detection points, the number of alarms is greatly reduced, and alarms are only issued in places where harmful gas leakage or diffusion is more serious, so that nearby personnel can be prompted to evacuate from paths with less harmful gases.

[0013] Optionally, the leakage information includes leakage time point and leakage concentration; the diffusion information includes diffusion time point and diffusion concentration.

[0014] By adopting the above technical solution, the detection of harmful gases is facilitated by collecting the leakage time point, leakage concentration, diffusion time point and diffusion concentration.

[0015] Optionally, when there are multiple types of harmful gases, the diffusion information of the harmful gases at each diffusion detection point in the working area is obtained, specifically including:

[0016] Preset the hazard level of each harmful gas;

[0017] Obtain the concentration of each harmful gas at each diffusion detection point in the working area;

[0018] Screen harmful gases according to their hazard level and concentration;

[0019] Obtain the diffusion information of harmful gases after screening at each diffusion detection point.

[0020] By adopting the above technical solution, the hazard level of each harmful gas is preset, and the concentration of each harmful gas at each diffusion detection point in the working area is calculated. The harmful gases are screened by hazard level and percentage value to screen out harmful gases with high hazard level and high concentration, and then the diffusion information of the harmful gas is obtained, that is, the diffusion information of the harmful gas that needs to be processed first at each diffusion detection point is obtained.

[0021] Optionally, screening all diffusion detection points according to the diffusion information of the harmful gas to obtain the main diffusion points specifically includes:

[0022] Generate a hazard coefficient for each diffusion detection point based on the diffusion concentration of the harmful gas diffusion information at each diffusion detection point and the hazard level corresponding to the harmful gas;

[0023] According to the risk factor, all diffusion detection points are screened to obtain the main diffusion points.

[0024] By adopting the above technical solution, a hazard coefficient is generated for each diffusion detection point based on the diffusion concentration of the harmful gas diffusion information and the hazard level corresponding to the harmful gas. The larger the hazard coefficient, the greater the hazard of the harmful gas at the corresponding diffusion detection point. Therefore, it is convenient to screen the diffusion detection points with greater hazard of harmful gases from all diffusion detection points according to the hazard coefficient as the main diffusion points.

[0025] Optionally, when there is only one type of harmful gas, screening out the main diffusion point from all diffusion detection points based on the diffusion information of the harmful gas specifically includes:

[0026] Sort all diffusion detection points according to the diffusion concentration of harmful gas diffusion information;

[0027] According to the sorting, obtain the sorting maintenance time of a preset number of diffusion detection points;

[0028] Determine whether the sorting maintenance time is greater than the preset time. If so, use the corresponding diffusion detection point as the main diffusion point.

[0029] By adopting the above technical solution, when there is only one type of harmful gas, all diffusion detection points are sorted according to the diffusion concentration of the diffusion information of the harmful gas, and the sorting maintenance time of a preset number of diffusion detection points is obtained based on the sorting. When the sorting maintenance time is greater than the preset time, it means that the harmful gas diffusion concentration difference of the corresponding diffusion detection point is continuously high. At this time, the corresponding diffusion point is used as the main diffusion point.

[0030] Optionally, generating an alarm signal according to leakage information corresponding to a major leakage point and diffusion information corresponding to a major diffusion point specifically includes:

[0031] Determine whether the leakage time point of the leaked information corresponding to the main leakage point is earlier than the diffusion time point of the diffusion information corresponding to the main diffusion point;

[0032] If not, an alarm signal of the main diffusion point is generated;

[0033] If so, determine whether the leakage concentration of the leakage information corresponding to the main leakage point is greater than the diffusion concentration of the diffusion information corresponding to the main diffusion point; if higher, generate an alarm signal for the main leakage point and an alarm signal for the main diffusion point; if lower, generate an alarm signal for the main diffusion point.

[0034] By adopting the above technical solution, if the leakage time point of the leakage information corresponding to the main leakage point is earlier than the diffusion time point of the diffusion information corresponding to the main diffusion point, and the leakage concentration of the leakage information corresponding to the main leakage point is greater than the diffusion concentration of the diffusion information corresponding to the main diffusion point, then it indicates that a leak is indeed occurring at the main leakage point. In this case, both the main leakage point and the main diffusion point will trigger an alarm. Nearby personnel can infer the diffusion path of the hazardous gas from the main leakage point and the main diffusion point, facilitating nearby personnel to find the optimal evacuation path. Conversely, if the leakage time point of the leakage information corresponding to the main leakage point is later than the diffusion time point of the diffusion information corresponding to the main diffusion point, or the leakage concentration of the leakage information corresponding to the main leakage point is less than the diffusion concentration of the diffusion information corresponding to the main diffusion point, then it indicates that the hazardous gas at the main diffusion point may have diffused from other locations. In this case, a hazardous gas leak is not necessarily occurring at the main leakage point, and an alarm only needs to be triggered for the main diffusion point.

[0035] Optionally, also include:

[0036] Generate a maintenance report based on the leakage information of harmful gases at each leakage detection point.

[0037] By adopting the above technical solution, it is convenient to repair the location corresponding to the leakage repair point through the repair report.

[0038] In a second aspect, the present application provides a harmful gas detection and alarm system, which adopts the following technical solutions:

[0039] A harmful gas detection and alarm system, applying the above alarm method, comprises:

[0040] A leakage information acquisition unit, used to acquire leakage information of harmful gases at each leakage detection point in the working area;

[0041] A diffusion information acquisition unit, used to acquire diffusion information of harmful gases at each diffusion detection point in the working area;

[0042] The leakage point screening unit is used to screen all leakage detection points according to the leakage information of harmful gases and obtain the main leakage points;

[0043] The diffusion point screening unit is used to screen all diffusion detection points according to the diffusion information of harmful gases to obtain the main diffusion points;

[0044] The alarm signal generating unit is used to generate an alarm signal according to the leakage information corresponding to the main leakage point and the diffusion information corresponding to the main diffusion point.

[0045] By adopting the above technical solution, the leakage information of harmful gases at each leakage detection point in the working area is obtained by using the leakage information acquisition unit; the diffusion information of harmful gases at each diffusion detection point in the working area is obtained by using the diffusion information acquisition unit; all leakage detection points are screened according to the leakage information of harmful gases to obtain the main leakage points by using the leakage point screening unit; all diffusion detection points are screened according to the diffusion information of harmful gases by using the diffusion point screening unit to obtain the main diffusion points; and the alarm signal generation unit is used to generate an alarm signal according to the leakage information corresponding to the main leakage point and the diffusion information corresponding to the main diffusion point.

[0046] In a third aspect, the present application provides a computer device that adopts the following technical solution:

[0047] A computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes a harmful gas detection and alarm method as described in any one of the first aspects.

[0048] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0049] A computer-readable storage medium stores a computer program that can be loaded by a processor and executed by any one of the harmful gas detection and alarm methods described in the first aspect.

[0050] In summary, this application has the following beneficial technical effects:

[0051] Generating alarm signals based on major leakage points and major diffusion points greatly reduces the number of alarms compared to sounding alarms at all leakage detection points and diffusion detection points, making it easier to prompt nearby personnel to evacuate via paths with less harmful gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a flowchart of an alarm method according to one embodiment of the present application.

[0053] Figure 2 This is a flow chart of a method for screening main diffusion points in one embodiment of the present application.

[0054] Figure 3 This is a flow chart of a method for generating an alarm signal according to one embodiment of the present application.

[0055] Figure 4 This is a flow chart of a method for obtaining diffusion information according to one embodiment of the present application.

[0056] Figure 5 This is a flow chart of a method for generating an alarm signal according to another embodiment of the present application.

[0057] Figure 6 It is a block diagram of an alarm system according to one embodiment of the present application. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-6 It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0059] The embodiment of the present application discloses a method for detecting and alarming harmful gases. Figure 1 , a harmful gas detection and alarm method includes:

[0060] Step S101: Acquire the leakage information of harmful gases at each leakage detection point in the working area;

[0061] The work areas can be preset in advance. For example, each workshop can be used as a work area, or each workshop can be divided into multiple work areas according to the actual building structure.

[0062] Among them, the leakage detection point is the location where the harmful gas measuring instrument for detecting harmful gases is installed. The leakage detection point is set at the transportation or storage valve, pipeline interface and air outlet, so as to facilitate the detection of harmful gases.

[0063] Among them, the leakage information includes the leakage time point and the leakage concentration; the leakage time point is the time point when the harmful gas measuring instrument installed at the leakage detection point detects the harmful gas, and the leakage concentration is the concentration of the harmful gas detected by the harmful gas measuring instrument installed at the leakage detection point.

[0064] Step S102: Acquire diffusion information of harmful gases at each diffusion detection point in the working area;

[0065] Among them, the diffusion detection point is also the location where the harmful gas measuring instrument for detecting harmful gases is installed. The diffusion detection point is set at the safety exit or evacuation passage of the working area.

[0066] Among them, the harmful gas can be one or more of formaldehyde, ammonia, carbon monoxide, chlorine, hydrogen cyanide, hydrogen sulfide, nitric oxide, nitrogen dioxide, sulfur dioxide and methane. It should be understood that if the harmful gas measuring instrument is a single measuring instrument that can only measure one of the harmful gases, then only one harmful gas can be obtained and only one harmful gas can be detected. If the harmful gas measuring instrument is a composite measuring instrument that can measure multiple harmful gases, then multiple harmful gases can be obtained and detected at the same time.

[0067] The diffusion information includes the diffusion time point and the diffusion concentration. The diffusion time point is the time point when the harmful gas meter installed at the diffusion detection point detects the harmful gas, and the diffusion concentration is the concentration of the harmful gas detected by the harmful gas meter installed at the diffusion leakage detection point.

[0068] Step S103: Screening all leakage detection points according to the leakage information of harmful gases to obtain the main leakage points;

[0069] It should be understood that, under normal circumstances, the valves, pipe interfaces and air outlets corresponding to all leakage detection points will not leak harmful gases at the same time. Screening all leakage points will facilitate obtaining the main leakage point that is most likely to be the actual leakage location.

[0070] Specifically, when a harmful gas leak occurs, the leak detection point with the earliest leak time point is first selected as the main leak point. After a preset time period from the earliest leak time point, the leak detection point with the highest leak concentration is selected as the main leak point.

[0071] Step S104: Screening all diffusion detection points based on the diffusion information of the harmful gas to obtain the main diffusion points;

[0072] It should be understood that the diffusion of gas is greatly affected by airflow. For example, the airflow formed by fans, air conditioners, ventilation fans, etc. in the working area, as well as the airflow formed by doors and windows and natural weather, will have different effects on the diffusion direction of harmful gases. All diffusion detection points are screened to obtain the main diffusion points of the main diffusion direction of harmful gases.

[0073] Specifically, when a harmful gas leak occurs, the diffusion detection point with the earliest diffusion time point is first used as the main diffusion point. After a preset time period from the earliest diffusion time point, the diffusion detection point with the highest diffusion concentration is used as the main diffusion point.

[0074] Step S105: Generate an alarm signal according to the leakage information corresponding to the main leakage point and the diffusion information corresponding to the main diffusion point.

[0075] The alarm signal is used to control the main diffusion points and / or main leakage points to give an alarm.

[0076] It should be understood that the main leakage point provides information on the location of the hazardous gas leak, while the main diffusion point provides information on the diffusion direction of the hazardous gas. The alarm signal generated by the combination of the two facilitates notification of the possible presence of hazardous gas to nearby personnel. In other words, the line connecting the main leakage point and the main diffusion point is considered to be the diffusion path of the hazardous gas.

[0077] In the above embodiment, the leakage information of the harmful gas is obtained at each leakage detection point in the working area, and all the leakage detection points are screened according to the leakage information to obtain the main leakage point, that is, the leakage position of the harmful gas is obtained; the diffusion information of the harmful gas is obtained at each diffusion detection point in the working area, and all the diffusion detection points are screened according to the diffusion information of the harmful gas to obtain the main diffusion point, that is, the main diffusion position of the harmful gas is obtained, and an alarm signal is generated according to the main leakage point and the main diffusion point. Compared with alarms at all leakage detection points and diffusion detection points, the number of alarms is greatly reduced, and alarms are only issued in places where the leakage or diffusion of harmful gases is more serious, so as to facilitate prompting nearby personnel to evacuate from paths with less harmful gases.

[0078] Reference Figure 2 When there is only one type of harmful gas, as an implementation of step S104, step S104 specifically includes:

[0079] Step S1041: sorting all diffusion detection points according to the diffusion concentration of the harmful gas diffusion information;

[0080] Specifically, the corresponding diffusion detection points are sorted in descending order of the harmful gas diffusion concentration.

[0081] Step S1042: obtaining the sorting maintenance time of a preset number of diffusion detection points according to the sorting;

[0082] It should be understood that the preset number is the number of main diffusion points that need to be screened out, and the preset number can be one, two or three.

[0083] The ranking maintenance duration is the time that the diffusion detection point remains within the preset number of rankings. For example, if the preset number is two, the two diffusion detection points with the highest diffusion concentration rankings are obtained, and the time that each detection point remains within the range of the first two rankings is the ranking maintenance duration.

[0084] Step S1043: Determine whether the sorting maintenance time is greater than a preset time, if so, execute step S1044;

[0085] It should be understood that when the sorting maintenance time is greater than the preset time, it means that the diffusion concentration of the corresponding diffusion detection point is at a high value within the sorting maintenance time, thereby indicating that the harmful gas diffusion concentration of the corresponding diffusion detection point is continuously high.

[0086] The preset duration can be set to five seconds or ten seconds.

[0087] Step S1044: taking the corresponding diffusion detection point as the main diffusion point.

[0088] It should be understood that by selecting the diffusion detection point corresponding to the ranking maintenance period longer than the preset time as the primary diffusion point, the primary diffusion point is less likely to switch repeatedly in a short period of time. That is, the primary diffusion point is updated only once every preset time interval, and the updated primary diffusion point can be the same as the previous primary diffusion point.

[0089] In the above embodiment, when there is only one type of harmful gas, all diffusion detection points are sorted according to the diffusion concentration of the diffusion information of the harmful gas, and the sorting maintenance time of a preset number of diffusion detection points is obtained based on the sorting. When the sorting maintenance time is greater than the preset time, it means that the harmful gas diffusion concentration difference of the corresponding diffusion detection point is continuously high. At this time, the corresponding diffusion point is used as the main diffusion point.

[0090] Reference Figure 3 When there is only one type of harmful gas, as an implementation of step S105, step S105 specifically includes:

[0091] Step S1051: Determine whether the leakage time point of the leaked information corresponding to the main leakage point is earlier than the diffusion time point of the diffusion information corresponding to the main diffusion point; if not, execute step S1054; if so, execute step S1052;

[0092] It should be understood that in step S103, the main leakage point is screened out from all the leakage detection points in the working area, but the harmful gas does not necessarily come only from the leakage detection point in the working area. The harmful gas may also drift from the adjacent working area or other sources outside the working area. In this case, the main leakage point screened out from all the leakage detection points does not actually leak. At this time, the main leakage point detects harmful gases drifting from other sources, so the main leakage point does not need to alarm at this time. In order to solve the above problem, steps S1051-step S1054 are specially set to solve the problem of false alarm of the main leakage point.

[0093] It should be understood that if harmful gas leaks from valves, pipe interfaces and air outlets in the working area, the corresponding main leakage point is the location where the harmful gas is first detected. Since the main leakage point is the location where the harmful gas is detected earliest among all leakage detection points, if the leakage time point of the leakage information corresponding to the main leakage point is later than the diffusion time point of the diffusion information corresponding to the main diffusion point, it means that the harmful gas is not caused by leakage from the main leakage point.

[0094] Step S1052: Determine whether the leakage concentration of the leakage information corresponding to the main leakage point is greater than the diffusion concentration of the diffusion information corresponding to the main diffusion point; if it is higher, execute step S1053; if it is lower, execute step S1054;

[0095] It should be understood that if the main leak point is the actual location of the hazardous gas leak, the leakage concentration at the main leak point should be greater than the diffusion concentration of all diffusion points. If the leakage concentration of the leakage information corresponding to the main leak point is less than the diffusion concentration of the diffusion information corresponding to the main diffusion point, it indicates that the main leak point is not the actual location of the hazardous gas leak.

[0096] Step S1053: generating alarm signals for major leakage points and major diffusion points;

[0097] It should be understood that when the main leakage point is the actual leakage location of the harmful gas, it is necessary to generate an alarm signal for the main leakage point and an alarm signal for the main diffusion point, so that both the main leakage point and the main diffusion point issue an alarm. Based on the alarms of the main leakage point and the main diffusion point, it is convenient for the staff to know the path of the harmful gas from the leakage location to the diffusion location (that is, the straight line path between the main leakage point and the main diffusion point), and the concentration of the harmful gas in this path is also at a high level.

[0098] Step S1054: Generate an alarm signal for the main diffusion point.

[0099] It should be understood that when the main leakage point is not the actual leakage location of the harmful gas, it means that the harmful gas comes from outside the working area. At this time, the harmful gas mainly enters the working area from the main diffusion point, so it is only necessary to generate an alarm signal for the main diffusion point to make the main diffusion point sound an alarm to instruct nearby staff to avoid the main diffusion point of the alarm and evacuate.

[0100] Reference Figure 4 When there are multiple types of harmful gases, as an implementation of step S102, step S102 specifically includes:

[0101] Step S1021: presetting the hazard level of each harmful gas;

[0102] It should be understood that the damage caused to the human body varies depending on the properties of harmful gases. Some harmful gases will not cause serious damage to the human body in a short period of time, while some harmful gases may cause irreversible damage such as poisoning or even suffocation in a short period of time. Therefore, the danger level of each harmful gas is set according to the degree of damage it causes to the human body.

[0103] Step S1022: obtaining the concentration of each harmful gas at each diffusion detection point in the work area;

[0104] Step S1023: screening harmful gases according to the hazard level and concentration of each harmful gas;

[0105] Specifically, a concentration threshold for each harmful gas is set, the percentage value of the concentration of each harmful gas exceeding the concentration threshold is calculated, weights are assigned to the percentage value and the hazard level respectively, the hazard coefficient of each harmful gas is calculated, and the harmful gas with the highest hazard coefficient is used as the screened harmful gas.

[0106] Step S1024: Obtain diffusion information of harmful gases after screening at each diffusion detection point.

[0107] It should be understood that the harmful gases screened at each diffusion detection point are the most dangerous harmful gases at the corresponding diffusion detection point. At this time, only the most dangerous harmful gases at each diffusion detection point need to be obtained.

[0108] In the above embodiment, the hazard level of each harmful gas is preset, and the concentration of each harmful gas at each diffusion detection point in the working area is calculated. The harmful gases are screened by the hazard level and percentage value to screen out harmful gases with high hazard levels and large concentrations, and then the diffusion information of the harmful gas is obtained, that is, the diffusion information of the harmful gas that needs to be processed first at each diffusion detection point is obtained.

[0109] When there are multiple types of harmful gases, as another implementation of step S104, step S104 specifically includes:

[0110] According to the diffusion concentration of the harmful gas diffusion information at each diffusion detection point and the corresponding hazard level of the harmful gas, a hazard coefficient of each diffusion detection point is generated; according to the hazard coefficient, all diffusion detection points are screened to obtain the main diffusion points.

[0111] It should be understood that the risk coefficient of each diffusion detection point is the highest risk coefficient among all the risk coefficients in the above step S1023.

[0112] Specifically, the risk factors are sorted from high to low, and the diffusion detection points corresponding to one or more risk factors with the highest ranking are selected as the main diffusion points.

[0113] In the above embodiment, a risk coefficient is generated for each diffusion detection point based on the diffusion concentration of the harmful gas diffusion information and the danger level corresponding to the harmful gas. The larger the risk coefficient, the more harmful the harmful gas at the corresponding diffusion detection point is. Therefore, it is convenient to screen the diffusion detection points with greater harmful gases from all diffusion detection points based on the risk coefficient as the main diffusion points.

[0114] Reference Figure 5 When there are multiple types of harmful gases, as another implementation of step S105, step S105 specifically includes:

[0115] Step S1055: Determine whether the type of harmful gas at the main leakage point is consistent with the type of harmful gas at the main diffusion point. If they are consistent, execute step S1056; if not, execute step S1059;

[0116] It should be understood that if the type of harmful gas at the main leakage point is inconsistent with the type of harmful gas at the main diffusion point, it means that the harmful gas at the main diffusion point is not diffused from the main leakage point. At this time, only the main diffusion point needs to be alarmed.

[0117] Step S1056: Determine whether the leakage time point of the leaked information corresponding to the main leakage point is earlier than the diffusion time point of the diffusion information corresponding to the main diffusion point; if not, execute step S1059; if so, execute step S1057;

[0118] Step S1057: Determine whether the leakage concentration of the leakage information corresponding to the main leakage point is greater than the diffusion concentration of the diffusion information corresponding to the main diffusion point; if it is higher, execute step S1058; if it is lower, execute step S1059;

[0119] Step S1058: generating alarm signals for major leakage points and major diffusion points;

[0120] Step S1059: Generate an alarm signal for the main diffusion point.

[0121] As a further implementation of the alarm method, the alarm method further includes:

[0122] Generate a maintenance report based on the harmful gas leakage information at each leak detection point. The maintenance report facilitates repairs at the location corresponding to the leak detection point.

[0123] The embodiment of the present application discloses a harmful gas detection and alarm system. Figure 6 , a harmful gas detection and alarm system includes:

[0124] A leakage information acquisition unit, used to acquire leakage information of harmful gases at each leakage detection point in the working area;

[0125] A diffusion information acquisition unit, used to acquire diffusion information of harmful gases at each diffusion detection point in the working area;

[0126] The leakage point screening unit is used to screen all leakage detection points according to the leakage information of harmful gases and obtain the main leakage points;

[0127] The diffusion point screening unit is used to screen all diffusion detection points according to the diffusion information of harmful gases to obtain the main diffusion points;

[0128] The alarm signal generating unit is used to generate an alarm signal according to the leakage information corresponding to the main leakage point and the diffusion information corresponding to the main diffusion point.

[0129] In the above embodiment, the leakage information acquisition unit is used to obtain the leakage information of the harmful gas at each leakage detection point in the working area; the diffusion information acquisition unit is used to obtain the diffusion information of the harmful gas at each diffusion detection point in the working area; the leakage point screening unit is used to screen all the leakage detection points according to the leakage information of the harmful gas to obtain the main leakage points; the diffusion point screening unit is used to screen all the diffusion detection points according to the diffusion information of the harmful gas to obtain the main diffusion points; the alarm signal generation unit is used to generate an alarm signal according to the leakage information corresponding to the main leakage point and the diffusion information corresponding to the main diffusion point.

[0130] The harmful gas detection and alarm system provided in the present application can implement the above-mentioned harmful gas detection and alarm method, and the specific working process of the harmful gas detection and alarm system can refer to the corresponding process in the above-mentioned method embodiment.

[0131] It should be noted that, in the above embodiments, the description of each embodiment has different emphases. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0132] Based on the same technical concept, the present invention also discloses a computer device, which includes a memory, a processor, and a computer program stored in the memory and runnable on the processor, and the processor executes any of the above-mentioned harmful gas detection and alarm methods.

[0133] The present invention also discloses a computer-readable storage medium, which is characterized in that it includes a computer program that can be loaded by a processor and executed by any of the above-mentioned harmful gas detection and alarm methods.

[0134] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interface, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0135] In addition, the functional modules in each embodiment of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0136] The above are all preferred embodiments of the present application and are not intended to limit the scope of protection of this application. Unless otherwise specified, any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features. In other words, unless otherwise specified, each feature is merely an example of a series of equivalent or similar features.

Claims

1. A harmful gas detection and alarm method, characterized in that: include: Obtain the leakage information of harmful gases at each leak detection point in the working area; Obtain the diffusion information of harmful gases at each diffusion detection point in the working area; According to the leakage information of harmful gases, all leakage detection points are screened to obtain the main leakage points; According to the diffusion information of harmful gases, all diffusion detection points are screened to obtain the main diffusion points; Generate alarm signals based on leakage information corresponding to the main leakage points and diffusion information corresponding to the main diffusion points; When there is only one type of harmful gas, the main diffusion point is selected from all diffusion detection points based on the diffusion information of the harmful gas, specifically including: Sort all diffusion detection points according to the diffusion concentration of harmful gas diffusion information; According to the sorting, obtain the sorting maintenance time of a preset number of diffusion detection points; Determine whether the sorting maintenance time is greater than the preset time. If so, use the corresponding diffusion detection point as the main diffusion point; Generating an alarm signal according to the leakage information corresponding to the main leakage point and the diffusion information corresponding to the main diffusion point specifically includes: Determine whether the leakage time point of the leaked information corresponding to the main leakage point is earlier than the diffusion time point of the diffusion information corresponding to the main diffusion point; If not, an alarm signal of the main diffusion point is generated; If so, determine whether the leakage concentration of the leakage information corresponding to the main leakage point is greater than the diffusion concentration of the diffusion information corresponding to the main diffusion point; if higher, generate an alarm signal for the main leakage point and an alarm signal for the main diffusion point; if lower, generate an alarm signal for the main diffusion point.

2. The alarm method according to claim 1, characterized in that: The leakage information includes leakage time point and leakage concentration; the diffusion information includes diffusion time point and diffusion concentration.

3. The alarm method according to claim 2, characterized in that: When there are multiple types of harmful gases, obtain the diffusion information of the harmful gases at each diffusion detection point in the working area, including: Preset the hazard level of each harmful gas; Obtain the concentration of each harmful gas at each diffusion detection point in the work area; Screen harmful gases according to their hazard level and concentration; Obtain the diffusion information of harmful gases after screening at each diffusion detection point.

4. The alarm method according to claim 3, characterized in that: According to the diffusion information of harmful gases, all diffusion detection points are screened to obtain the main diffusion points, which specifically include: Generate a hazard coefficient for each diffusion detection point based on the diffusion concentration of the harmful gas diffusion information at each diffusion detection point and the hazard level corresponding to the harmful gas; According to the risk factor, all diffusion detection points are screened to obtain the main diffusion points.

5. The alarm method according to claim 1, characterized in that: Also includes: Generate a maintenance report based on the leakage information of harmful gases at each leakage detection point.

6. A harmful gas detection and alarm system, characterized in that: A method for detecting and alarming harmful gases according to any one of claims 1 to 5 is applied, wherein the system comprises: A leakage information acquisition unit, used to acquire leakage information of harmful gases at each leakage detection point in the working area; A diffusion information acquisition unit, used to acquire diffusion information of harmful gases at each diffusion detection point in the working area; The leakage point screening unit is used to screen all leakage detection points according to the leakage information of harmful gases and obtain the main leakage points; The diffusion point screening unit is used to screen all diffusion detection points according to the diffusion information of harmful gases to obtain the main diffusion points; The alarm signal generating unit is used to generate an alarm signal according to the leakage information corresponding to the main leakage point and the diffusion information corresponding to the main diffusion point.

7. A computer device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes a harmful gas detection and alarm method as claimed in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that The device comprises a computer program stored therein which can be loaded by a processor and execute the harmful gas detection and alarm method according to any one of claims 1 to 5.

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