Gas detector control system and control method for freely switching measuring ranges

Abstract

The invention relates to the field of gas detection control, and particularly discloses a gas detector control system and method for freely switching ranges, and the system comprises a detection information acquisition module, an environment detection module, a gas detection module, a range determination module and a range adjustment module, the detection information acquisition module acquires three-dimensional information and target gas information of a to-be-detected environment and constructs a plurality of gas detection sub-environments, the environment detection module continuously monitors gas movement interference information in each sub-environment and determines the stability degree of the whole environment, and the gas detection module detects distribution information of target gas in real time. The measuring range determining module is used for determining the initial detection measuring range of each detector group according to the environmental stability degree and the gas type, and the measuring range adjusting module is used for dynamically adjusting the detection measuring range according to the gas safety level, the interference movement frequency and the gas distribution condition. The invention also provides an accurate gas detection method in a complex environment.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection and control, and particularly to a gas detector control system and a control method for freely switching ranges. Background Art

[0002] Fixed-range detectors cannot adapt to the dynamic changes in gas concentration. Manually switched-range detectors rely on manual operation and have a slow response speed. Although conventional automatically switched-range detectors improve flexibility, data loss or errors may occur during the switching process, and it is difficult to adapt to complex environments. Multi-sensor detectors have a wide coverage range, but they are costly, large in size, and high in power consumption. In addition, the prior art generally has problems such as slow response speed, insufficient accuracy, poor adaptability, complex operation, and poor data continuity.

[0003] For example, the prior art discloses an exhaled gas alcohol detector and an implementation method with a dynamically adjustable range (comparative document). The gas alcohol detector includes a housing, and an exhaled gas collection module, an alcohol concentration sensor module, and a control module are provided inside the housing; the exhaled gas collection module is connected to the alcohol concentration sensor module, and a signal processing module is provided on the circuit connecting the alcohol concentration sensor module and the control module. The signal processing module is connected to a dynamic range adjustment module, and the dynamic range adjustment module is connected to the control module. By dynamically adjusting the test range, this is equivalent to integrating two devices with different ranges, a large range and a small range, and avoiding the disadvantages of fixed ranges of these two devices. The gas alcohol detector includes a housing, and an exhaled gas collection module, an alcohol concentration sensor module, and a control module are provided inside the housing; the exhaled gas collection module is connected to the alcohol concentration sensor module, and a signal processing module is provided on the circuit connecting the alcohol concentration sensor module and the control module. The signal processing module is connected to a dynamic range adjustment module, and the dynamic range adjustment module is connected to the control module. This invention avoids the disadvantages of fixed ranges of these two devices by dynamically adjusting the test range, which is equivalent to integrating two devices with different ranges, a large range and a small range.

[0004] However, in the prior art, there are still the following problems:

[0005] In the prior art, multi-range gas detection instruments cannot automatically adjust the range according to the actual scenario, and need to be manually adjusted according to requirements. Delayed range switching results in incomplete and inaccurate detection results, and the problem of not meeting the actual detection requirements. Summary of the Invention

[0006] The purpose of the present invention is to provide a gas detector control system for freely switching ranges, to solve the problem that existing multi-range gas detection instruments cannot automatically adjust the range according to the actual scenario, resulting in incomplete and inaccurate detection results and not meeting the actual requirements.

[0007] To this end, the present invention provides a gas detector control system for freely switching ranges, and the gas detector control system for freely switching ranges includes:

[0008] A detection information acquisition module, which is used to acquire target gas information of the current detection environment, acquire three-dimensional information of the current environment to be detected, and construct a number of gas detection sub-environments according to the three-dimensional information. The three-dimensional information includes the size of the outer edge of the environment to be detected, the positions and sizes of each inner wall, and the target gas information includes the type of gas to be detected and the gas safety level;

[0009] An environment detection module, which is connected to the detection information acquisition module and is used to continuously detect gas movement interference information of each of the gas detection sub-environments, and determine the environmental stability degree of the current environment to be detected in combination with the three-dimensional information of the current environment to be detected. Among them, the gas movement interference information includes temperature, humidity, wind speed and interference movement frequency;

[0010] A gas detection module, which includes a number of gas detector groups and is used to detect the distribution information of the target gas in the current detection environment. The distribution information includes gas concentration and gas coverage area;

[0011] A range determination module, which is respectively connected to the detection information acquisition module, the environment detection module and the gas detection module, and is used to determine the initial detection ranges of each of the gas detector groups in the current detection cycle according to the environmental stability degree and the type of gas to be detected;

[0012] A range adjustment module, which is respectively connected to the environment detection module, the gas detection module and the range adjustment module, and is used to determine the range adjustment method of the initial detection range according to the gas safety level and the interference movement frequency, and determine the range adjustment amount in combination with the distribution information.

[0013] As a preferred technical solution of the gas detector control system for freely switching ranges, the detection information acquisition module acquires the three-dimensional information of the current environment to be detected and constructs a three-dimensional edge model of the current environment to be detected;

[0014] The detection information acquisition module constructs a number of gas detection sub-environments according to the three-dimensional edge model in combination with the positions and sizes of each inner wall;

[0015] Among them, each of the gas detection sub-environments does not overlap.

[0016] As a preferred technical solution of the gas detector control system for freely switching ranges, the environment detection module includes:

[0017] An environmental detection unit for detecting the temperature information, humidity information, and wind speed information of each gas detection sub-environment;

[0018] An interference detection unit for determining the interference movement frequency, which is the number of interference movements per unit time in the current gas detection sub-environment;

[0019] An environmental analysis unit connected to the environmental detection unit and the interference detection unit respectively, for determining the environmental stability parameters of each gas detection sub-environment per unit time according to the temperature information, humidity information, and wind speed information.

[0020] As a preferred technical solution of a gas detector control system for freely switching ranges, the environmental detection module determines the environmental stability degree of the current environment to be detected according to the environmental stability parameters of each gas detection sub-environment combined with the three-dimensional information of the current environment to be detected.

[0021] As a preferred technical solution of a gas detector control system for freely switching ranges, the number of gas detectors included in each gas detector group in the gas detection module is positively correlated with the volume of the corresponding gas detection sub-environment;

[0022] Among them, each gas detector group corresponds to each gas detection sub-environment one by one.

[0023] As a preferred technical solution of a gas detector control system for freely switching ranges, the range determination module determines the initial detection type of the current environment to be detected according to the environmental stability degree;

[0024] If the environmental stability degree is less than a preset environmental stability threshold, the initial detection type is a small-range detection type;

[0025] If the environmental stability degree is greater than or equal to the preset environmental stability threshold, the initial detection type is a large-range detection type.

[0026] As a preferred technical solution of a gas detector control system for freely switching ranges, the range determination module determines the initial detection ranges of each gas detector group according to the initial detection type of the current environment to be detected and the type of gas to be detected.

[0027] As a preferred technical solution of a gas detector control system for freely switching ranges, the range adjustment module determines the range adjustment method of the initial detection range according to the gas safety level and the interference movement frequency, including:

[0028] If the gas safety level and the interference movement frequency meet the preset adjustment conditions, the range adjustment module determines that the range adjustment method of the initial detection range remains unchanged;

[0029] If the gas safety level or the interference movement frequency does not meet the preset adjustment conditions, the range adjustment module determines that the range adjustment method for the initial detection range is to increase the range;

[0030] Wherein, the preset adjustment conditions are that the gas safety level is less than or equal to the preset safety level, and the interference movement frequency is lower than the preset interference frequency.

[0031] As a preferred technical solution of the gas detector control system for freely switching ranges, the range adjustment module determines the range adjustment amount according to the range adjustment method in combination with the distribution information, including:

[0032] Under the condition that the range adjustment method is to increase the range, if the gas coverage area shows an increasing trend, the ranges of the gas detector groups in the corresponding gas detection sub-environments are adjusted to the maximum;

[0033] If the gas coverage area remains unchanged, the range adjustment amount is determined according to the gas concentration.

[0034] On the other hand, the present invention also provides a method for a gas detector control system for freely switching ranges, including:

[0035] Step S1, obtaining the target gas information and three-dimensional information of the current detection environment, and constructing a number of gas detection sub-environments according to the three-dimensional detection information;

[0036] Step S2, continuously detecting the gas movement interference information and the distribution information of the target gas in each of the gas detection sub-environments;

[0037] Step S3, determining the environmental stability degree of the current environment to be detected according to the gas movement interference information in each of the gas detection sub-environments and the three-dimensional information of the current environment to be detected;

[0038] Step S4, determining the initial detection ranges of the gas detector groups in the current detection period according to the environmental stability degree and the type of gas to be detected;

[0039] Step S5, determining the range adjustment method of the initial detection range according to the gas safety level, the environmental stability degree and the interference movement frequency, and determining the range adjustment amount in combination with the distribution information.

[0040] The beneficial effects of the present invention are as follows: The gas detector control system of the present invention performs three-dimensional modeling and sub-environment division on the detection environment through the detection information acquisition module, and combines the environmental detection module to monitor the temperature, humidity, wind speed, and interference movement frequency in real time, so as to accurately evaluate the environmental stability. On this basis, the range determination module dynamically determines the initial detection range according to the environmental stability and gas type, and the range adjustment module further optimizes the range adjustment strategy based on the gas safety level and interference information, which not only avoids the limitations of traditional fixed-range detectors, but also effectively solves the problems of uneven gas distribution, fast dynamic changes, and monitoring blind spots in complex environments through multi-point detection and range optimization. At the same time, the system flexibly adjusts the range according to the gas diffusion characteristics and actual application scenarios, further improving the detection accuracy and resource utilization efficiency. The present invention not only improves the reliability and safety of gas detection, but also provides an accurate detection method for gas monitoring in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 FIG. is a schematic structural diagram of a gas detector control system for freely switching ranges in an embodiment of the present invention;

[0042] Figure 2 FIG. is a schematic structural diagram of an environmental detection module for freely switching ranges in an embodiment of the present invention;

[0043] Figure 3 FIG. is a logic diagram for determining the initial detection type of the current environment to be detected in an embodiment of the present invention;

[0044] Figure 4 FIG. is a flowchart of the operation of a gas detector control system for freely switching ranges in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0047] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0049] Please refer to Figure 1 as shown, which is a schematic structural diagram of a gas detector control system for freely switching ranges in an embodiment of the present invention. This embodiment provides a gas detector control system for freely switching ranges. The gas detector control system for freely switching ranges includes:

[0050] A detection information acquisition module, which is used to acquire the target gas information of the current detection environment, acquire the three-dimensional information of the current environment to be detected, and construct a number of gas detection sub-environments according to the three-dimensional information. The three-dimensional information includes the size of the outer edge of the environment to be detected, the positions and sizes of each inner wall. The target gas information includes the type of gas to be detected and the gas safety level;

[0051] An environmental detection module, which is connected to the detection information acquisition module, is used to continuously detect the gas movement interference information of each gas detection sub-environment, and determine the environmental stability degree of the current environment to be detected in combination with the three-dimensional information of the current environment to be detected, wherein the gas movement interference information includes temperature, humidity, wind speed and interference movement frequency;

[0052] A gas detection module, which includes a number of gas detector groups, is used to detect the distribution information of the target gas in the current detection environment, and the distribution information includes gas concentration and gas coverage area;

[0053] A range determination module, which is respectively connected to the detection information acquisition module, the environmental detection module and the gas detection module, is used to determine the initial detection range of each gas detector group in the current detection period according to the environmental stability degree and the type of gas to be detected;

[0054] A range adjustment module, which is respectively connected to the environmental detection module, the gas detection module and the range adjustment module, is used to determine the range adjustment method of the initial detection range according to the gas safety level and the interference movement frequency, and determine the range adjustment amount in combination with the distribution information.

[0055] In practice, the gas type refers to the type of gas, such as carbon monoxide, hydrogen sulfide and ozone, etc.

[0056] According to the hazard degree levels used in the national standard "Classification of the Hazard Degree of Occupational Exposure to Toxic Substances" GB 5044-85 and its revised version GBZ230-2010, each level is respectively "Level Ⅰ (extremely hazardous)", "Level Ⅱ (highly hazardous)", "Level Ⅲ (moderately hazardous)", "Level Ⅳ (slightly hazardous)". The gas safety level of the present invention is divided into levels 1 to 4, corresponding to the danger degree from low to high. Level 1 corresponds to slightly hazardous gases (such as carbon dioxide); Level 2 corresponds to moderately hazardous gases (such as ammonia) and environmentally hazardous gases (such as sulfur dioxide); Level 3 corresponds to highly hazardous gases (such as hydrogen sulfide), flammable gases (such as methane) and corrosive gases (such as hydrogen fluoride); Level 4 corresponds to extremely hazardous gases (such as hydrogen cyanide). A flammable gas is a gas that can be ignited when it accounts for 13% or less by volume in a mixture with air under a standard pressure of 101.3 kPa, or a gas that, when mixed with air, has a flammable range of at least 12 percentage points regardless of the lower flammability limit value.

[0057] The determination methods of gas concentration and gas coverage area are not specifically limited. The gas detector can achieve the detection function. In addition, the diffusion trend of the gas after gas leakage can be determined through the detection results of the gas detector. This is the prior art and will not be elaborated here.

[0058] The gas detector control system of the present invention performs three-dimensional modeling and sub-environment division on the detection environment through the detection information acquisition module, and combines the environmental detection module to monitor the temperature, humidity, wind speed and interference movement frequency in real time, so as to accurately evaluate the environmental stability. On this basis, the range determination module dynamically determines the initial detection range according to the environmental stability and gas type, and the range adjustment module further optimizes the range adjustment strategy based on the gas safety level and interference information, which not only avoids the limitations of traditional fixed-range detectors, but also effectively solves the problems of uneven gas distribution, fast dynamic change and monitoring blind spots in complex environments through multi-point detection and range optimization. At the same time, the system flexibly adjusts the range according to the gas diffusion characteristics and actual application scenarios, further improving the detection accuracy and resource utilization efficiency. The present invention not only improves the reliability and safety of gas detection, but also provides an accurate detection method for gas monitoring in complex environments.

[0059] Specifically, the detection information acquisition module acquires the three-dimensional information of the current environment to be detected, and constructs a three-dimensional edge model of the current environment to be detected;

[0060] The detection information acquisition module constructs a number of gas detection sub-environments according to the three-dimensional edge model in combination with the positions and sizes of the inner walls;

[0061] Among them, the gas detection sub-environments do not overlap with each other.

[0062] In implementation, the three-dimensional edge model is a model composed of the outer sides of the current environment to be detected, that is, the outer contour of the current environment to be detected; the current environment to be detected is divided into a number of gas detection sub-environments with regular shapes according to the outer contour and the positions and corresponding sizes of all the inner walls in the environment to be detected.

[0063] It can be understood that dividing the complete environment that needs to be detected into several independent small spaces for gas detection respectively helps the gas detector to measure the gas concentration in each sub-environment more accurately, avoiding detection errors caused by complex environments. In addition, by dividing the space, the gas detector can dynamically adjust the detection range and detection frequency according to the specific needs of each sub-environment. For example, for a sub-environment where high-concentration gas may exist, it can switch to a relatively high-range detection mode, while for a sub-environment with a relatively low gas concentration, it can use a relatively low-range detection mode, so as to optimize resource use and extend the equipment life.

[0064] In the present invention, the detection information acquisition module divides the current environment to be detected into spatial segments, facilitating the processing of complex environments, making the detection results of each sub-environment more independent and accurate. At the same time, the detection data of each sub-environment can be independently recorded and analyzed, facilitating subsequent data management and trend analysis. By comparing the data of different sub-environments, the gas distribution and change rules can be better understood, providing strong support for environmental management and safety decision-making.

[0065] Please refer to Figure 2 as shown, which is a schematic structural diagram of the environment detection module for freely switching ranges in an embodiment of the present invention. The environment detection module includes:

[0066] An environment detection unit for detecting the temperature information, humidity information, and wind speed information of each gas detection sub-environment;

[0067] An interference detection unit for determining the interference movement frequency, where the interference movement frequency is the number of interference movements per unit time in the current gas detection sub-environment;

[0068] An environment analysis unit connected to the environment detection unit and the interference detection unit respectively, for determining the environmental stability parameters of each gas detection sub-environment per unit time according to the temperature information, humidity information, and wind speed information.

[0069] In implementation, the unit time is 1 hour, the number of interference movements is the number of movements of people or equipment, the interference movement frequency is the number of interference movements per unit time, that is, the number of movements of people or equipment within 1 hour. When the distance of a single action of the equipment or person reaches 1 m, it is determined as one movement.

[0070] The method for determining the environmental stability parameters is to calculate the respective average deviations and corresponding average values of the temperature information, humidity information, and wind speed information per unit time, and then calculate the ratio of the average deviation of the temperature information to the average temperature value, and the result is recorded as the temperature stability factor. Calculate the ratio of the average deviation of the humidity information to the average humidity value, and the result is recorded as the humidity stability factor. Calculate the ratio of the average deviation of the wind speed information to the average wind speed value, and the result is recorded as the wind speed stability factor. The current environment detection sub-environment is equal to the sum of the temperature stability factor, humidity stability factor, and wind speed stability factor.

[0071] It can be understood that for a single gas detection sub-environment, the movement of people or working equipment (such as a robotic arm or a forklift) will affect the air in the gas detection sub-environment. In addition, if the target gas to be detected is a harmful gas, considering the safety of the staff, a large-range detection is required to ensure the accuracy of gas detection.

[0072] Specifically, the environmental detection module determines the environmental stability degree of the current environment to be detected according to the environmental stability parameters of each gas detection sub-environment and the three-dimensional information of the current environment to be detected.

[0073] In implementation, the environmental stability degree of the current environment to be detected is determined according to the volume proportion of each gas detection sub-environment in the current environment to be detected and the corresponding environmental stability parameters.

[0074] Specifically, the number of gas detectors included in each gas detector group in the gas detection module is positively correlated with the volume of the corresponding gas detection sub-environment;

[0075] Among them, each gas detector group corresponds to each gas detection sub-environment one by one.

[0076] In implementation, along the diagonal direction within any single gas detection sub-environment, at least two gas detectors with a maximum measurement range that can cover the current gas detection sub-environment are provided. When the volume of the current gas detection sub-environment is too large and multiple gas detectors are required, it is necessary to ensure that all areas within the gas detection sub-environment can be covered by at least two gas detectors, that is, the maximum measurement range of each gas detection instrument can at least cover its adjacent gas detector.

[0077] It can be understood that if only one gas detector is set within a single gas detection sub-environment, it cannot cover a large range of space, resulting in monitoring blind spots, being unable to adapt to complex environments, being difficult to cope with the uneven distribution of gases, and at the same time being unable to meet the dynamic change requirements, resulting in inaccurate detection data.

[0078] In the present invention, the gas detection module controls multiple gas detectors in each detection sub-environment, which can effectively cover the entire area in a relatively large gas detection sub-environment, avoiding monitoring blind spots caused by the limited coverage range of a single detector. If the spatial layout is complex, such as areas with obstacles or uneven ventilation, resulting in uneven gas concentration distribution, multi-point detection can provide a more comprehensive monitoring effect, thus better reflecting the real situation. In addition, multiple detectors can calibrate and verify data with each other, reducing false alarms or missed alarms caused by equipment failures or sensor errors. If one detector has abnormal data, the data of other detectors can be used as a reference to ensure the reliability of the detection results.

[0079] Different sub-environments have different environmental factors such as ventilation conditions, temperature, and humidity. Multi-point detection can better adapt to these changes and ensure the accuracy of the detection results.

[0080] Please refer to Figure 3As shown, it is a logic diagram for determining the initial detection type of the current environment to be detected in an embodiment of the present invention. The range determination module determines the initial detection type of the current environment to be detected according to the environmental stability degree.

[0081] If the environmental stability degree is less than the preset environmental stability threshold, the initial detection type is a small-range detection type.

[0082] If the environmental stability degree is greater than or equal to the preset environmental stability threshold, the initial detection type is a large-range detection type.

[0083] In implementation, the environmental stability threshold is selected within the range [0.2, 0.25]. It can be understood that for a normal temperature and pressure environment, a temperature average deviation ≤ 0.5°C indicates environmental temperature stability, a humidity average deviation ≤ 3%RH indicates environmental humidity stability, and a wind speed average deviation ≤ 0.1m / s indicates environmental humidity stability.

[0084] The small-range detection type is the default range of each gas detection instrument, which is the ratio of the volume of the gas detection sub-environment to the total number of gas detectors in each gas detection environment within the current detection sub-environment. The large-range detection range is that the default range of each gas detector reaches the adjacent gas detector.

[0085] Specifically, the range determination module determines the initial detection ranges of each gas detector group according to the initial detection type of the current environment to be detected and the type of gas to be detected.

[0086] In implementation, under normal temperature and pressure, it is generally considered that gases with a molecular mass exceeding 50g / mol have a relatively slow diffusion rate. For example, sulfur dioxide, with a molecular mass of about 64g / mol, diffuses slower than gases with a smaller molecular mass such as hydrogen (about 2g / mol) and nitrogen (about 28g / mol) under the same conditions.

[0087] The molecular mass of the gas to be detected is determined according to the type of gas to be detected. The initial range of each gas detection sub-environment is determined according to the gas with the smallest molecular mass among all the types of gases to be detected in the target gas information. For the small-range detection type, the determined initial detection range is greater than the default range; for the large-range detection type, the determined initial detection range is less than the default range but not less than the default range of the small-range detection type.

[0088] The initial range difference is determined by the ratio of the difference between the smallest molecular mass and 50g / mol to 50g / mol.

[0089] In the present invention, the system flexibly selects the initial detection type according to the environmental stability degree, ensuring rapid adaptation when environmental conditions change, and improving the detection accuracy and reliability. The system further optimizes the range setting according to the molecular mass of the gas to be detected. For gases with a relatively small molecular mass and a relatively fast diffusion rate, the system appropriately expands the initial range to cover a wider detection area; while for gases with a relatively large molecular mass and a relatively slow diffusion rate, the range is reduced to focus on local high-precision detection. This range adjustment strategy based on gas characteristics not only improves the detection pertinence and accuracy, but also can effectively cope with the diffusion differences of different gases in the actual environment.

[0090] Specifically, the range adjustment module determines the range adjustment method of the initial detection range according to the gas safety level and the interference movement frequency, including:

[0091] If the gas safety level and the interference movement frequency meet the preset adjustment conditions, the range adjustment module determines that the range adjustment method of the initial detection range remains unchanged;

[0092] If the gas safety level or the interference movement frequency does not meet the preset adjustment conditions, the range adjustment module determines that the range adjustment method of the initial detection range is to increase the range;

[0093] Wherein, the preset adjustment conditions are that the gas safety level is less than or equal to the preset safety level, and the interference movement frequency is lower than the preset interference frequency.

[0094] In this embodiment, the preset safety level is level 2, and the preset interference frequency is that the number of interference movements per unit time exceeds 5. It can be understood that once the number of people per hour (or the movement of the robotic arm) reaches 5 times or more, the impact on the indoor gas flow will be relatively significant. The intensive activities of a large number of people will form obvious air disturbances, generating similar "piston effects" and "air curtain effects", which will not only greatly change the original air flow path indoors, but may also enhance the air exchange between indoors and outdoors, making the indoor gas flow more disordered. At the same time, a large number of people indicates that gas safety is more likely to threaten human safety, and more accurate detection is required.

[0095] When the range adjustment module determines that the range adjustment method of the initial detection range remains unchanged and the gas safety level is level 1, the range can be reduced to the default range of the small-range detection type.

[0096] Specifically, the range adjustment module determines the range adjustment amount according to the range adjustment method in combination with the distribution information, including:

[0097] Under the condition that the range adjustment method is to increase the range, if the gas coverage area shows an increasing trend, the range of the gas detector group corresponding to the gas detection sub-environment is adjusted to the maximum;

[0098] If the gas coverage area remains unchanged, the range adjustment amount is determined according to the gas concentration.

[0099] In practice, the allowable concentration difference is calculated based on the industry-regulated standard concentration of the gas to be detected and the currently detected corresponding gas concentration. The proportion of range increase is determined according to the ratio of the allowable difference to the standard concentration, and the range adjustment amount is the product of the initial detection range and the proportion of range increase.

[0100] In the present invention, the system can dynamically determine the range adjustment method according to the gas safety level and the interference movement frequency. When the environmental conditions are stable and the gas safety risk is low, the range is kept unchanged or decreased to reduce unnecessary resource consumption; while when the gas safety risk is high or the environmental interference is large, the range is automatically increased to ensure the comprehensiveness of the detection range. In addition, the system further refines the range adjustment strategy by combining the gas coverage area and concentration changes, which not only improves the detection efficiency but also ensures the ability to monitor the gas concentration in real time and accurately in a complex and changeable environment, providing strong support for ensuring personnel safety and environmental safety.

[0101] Please refer to Figure 4 As shown, it is a flowchart of the method for the gas detector control system for freely switching ranges in the embodiment of the present invention. The present invention also provides a method for the gas detector control system for freely switching ranges, including:

[0102] Step S1, obtain the target gas information and three-dimensional information of the current detection environment, and construct several gas detection sub-environments according to the three-dimensional detection information;

[0103] Step S2, continuously detect the gas movement interference information and the distribution information of the target gas in each of the gas detection sub-environments;

[0104] Step S3, determine the environmental stability degree of the current detection environment according to the gas movement interference information of each gas detection sub-environment and the three-dimensional information of the current detection environment;

[0105] Step S4, determine the initial detection range of each gas detector group in the current detection cycle according to the environmental stability degree and the type of gas to be detected;

[0106] Step S5, determine the range adjustment method of the initial detection range according to the gas safety level, the environmental stability degree, and the interference movement frequency, and determine the range adjustment amount in combination with the distribution information.

[0107] Obviously, the above embodiments of the present invention are merely examples given to clearly illustrate the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A gas detector control system for freely switching measuring ranges, characterized in that: include: A detection information acquisition module, which is used to obtain target gas information of the current detection environment, obtain three-dimensional information of the current environment to be detected, and construct a number of gas detection sub-environments according to the three-dimensional information, wherein the three-dimensional information includes the size of the outer edge of the environment to be detected, the position and size of each inner wall, and the target gas information includes the type of gas to be detected and the gas safety level; An environment detection module, which is connected to the detection information acquisition module, is used to continuously detect the gas movement interference information of each gas detection sub-environment, and determine the environmental stability of the current environment to be detected in combination with the three-dimensional information of the current environment to be detected, wherein the gas movement interference information includes temperature, humidity, wind speed and interference movement frequency; A gas detection module, which includes a plurality of gas detector groups, for detecting the distribution information of the target gas in the current detection environment, wherein the distribution information includes the gas concentration and the gas coverage area; A range determination module, which is respectively connected to the detection information acquisition module, the environment detection module and the gas detection module, and is used to determine the initial detection range of each gas detector group in the current detection cycle according to the environmental stability and the type of gas to be detected; A range adjustment module is respectively connected to the environment detection module, the gas detection module and the range adjustment module, and is used to determine the range adjustment method of the initial detection range according to the gas safety level and the interference movement frequency, and determine the range adjustment amount in combination with the distribution information.

2. The gas detector control system for freely switching measuring range according to claim 1, characterized in that: The detection information acquisition module acquires the three-dimensional information of the current environment to be detected and constructs a three-dimensional edge model of the current environment to be detected; The detection information acquisition module constructs a plurality of gas detection sub-environments according to the three-dimensional edge model and the position and size of each of the inner walls; Wherein, the gas detection sub-environments do not overlap with each other.

3. The gas detector control system for freely switching measuring range according to claim 2, characterized in that: The environment detection module comprises: An environment detection unit, which is used to detect the temperature information, humidity information and wind speed information of each gas detection sub-environment; An interference detection unit, which is used to determine the interference movement frequency, where the interference movement frequency is the number of interference movements per unit time in the current gas detection sub-environment; The environmental analysis unit is connected to the environmental detection unit and the interference detection unit respectively, and is used to determine the environmental stability parameters of each gas detection sub-environment within a unit time according to the temperature information, the humidity information and the wind speed information.

4. The gas detector control system for freely switching measuring range according to claim 3, characterized in that: The environment detection module determines the environmental stability degree of the current environment to be detected according to the environmental stability parameters of each of the gas detection sub-environments combined with the three-dimensional information of the current environment to be detected.

5. The gas detector control system for freely switching measuring range according to claim 4, characterized in that: The number of gas detectors included in each gas detector group in the gas detection module is positively correlated with the volume of the corresponding gas detection sub-environment; Among them, each gas detection instrument group corresponds one-to-one to each gas detection sub-environment.

6. The gas detector control system for freely switching measuring range according to claim 5, characterized in that: The range determination module determines the initial detection type of the current environment to be detected according to the environmental stability; If the environmental stability level is less than the preset environmental stability threshold, the initial detection type is a small-range detection type; If the environmental stability level is greater than or equal to a preset environmental stability threshold, the initial detection type is a large-range detection type.

7. The gas detector control system for freely switching measuring range according to claim 6, characterized in that: The range determination module determines the initial detection range of each gas detector group according to the initial detection type of the current environment to be detected and the type of gas to be detected.

8. The gas detector control system for freely switching measuring range according to claim 7, characterized in that: The range adjustment module determines a range adjustment method of the initial detection range according to the gas safety level and the interference movement frequency, including: If the gas safety level and the interference movement frequency meet the preset adjustment conditions, the range adjustment module determines that the range adjustment mode of the initial detection range is to remain unchanged; If the gas safety level or the interference movement frequency does not meet the preset adjustment conditions, the range adjustment module determines that the range adjustment method of the initial detection range is to increase the range; The preset adjustment condition is that the gas safety level is less than or equal to the preset safety level, and the interference movement frequency is lower than the preset interference frequency.

9. The gas detector control system for freely switching measuring range according to claim 8, characterized in that: The range adjustment module determines the range adjustment amount according to the range adjustment mode in combination with the distribution information, including: Under the condition that the range adjustment mode is to increase the range, if the gas coverage area has a tendency to increase, the range of the gas detector group corresponding to the gas detection sub-environment is adjusted to the maximum; If the gas coverage area remains unchanged, the range adjustment amount is determined according to the gas concentration.

10. A control method for a gas detector control system for freely switching measuring ranges applied to any one of claims 1 to 9, characterized in that: include: Step S1, obtaining target gas information and three-dimensional information of the current detection environment, and constructing a plurality of gas detection sub-environments according to the three-dimensional detection information, Step S2, continuously detecting the gas motion interference information of each gas detection sub-environment and the distribution information of the target gas; Step S3, determining the environmental stability of the current environment to be detected according to the gas motion interference information of each gas detection sub-environment and the three-dimensional information of the current environment to be detected; Step S4, determining the initial detection range of each gas detector group in the current detection cycle according to the environmental stability and the type of gas to be detected; Step S5, determining a range adjustment method for the initial detection range according to the gas safety level, the environmental stability and the interference movement frequency, and determining a range adjustment amount in combination with the distribution information.

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