A gas leak detection method, device, equipment and storage medium

Abstract

The present application provides a gas leak detection method, device, equipment and storage medium for accurately inferring whether a gas leak occurs in a space and reducing false alarms. The method includes: obtaining the gas concentration monitored by the first gas alarm; when the gas concentration monitored by the first gas alarm is greater than the alarm threshold, determining the first false alarm value of the first space where the first gas alarm is located based on the gas concentration monitored by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, and at least one of the false alarm rate of the first gas alarm; when the first false alarm value is less than the false alarm threshold, a gas leak alarm is issued.

Description

Technical Field

[0001] The present application relates to the field of gas safety, and in particular to a gas leak detection method, device, equipment and storage medium. Background Art

[0002] As a green and clean energy, natural gas has been widely used in all walks of life and has also penetrated into the daily lives of residents. However, gas is flammable and explosive. If gas leaks in a relatively closed indoor environment, it can easily cause fires, explosions and other accidents. Therefore, accurately monitoring whether gas leaks is one of the important guarantees for protecting the lives and property of residents.

[0003] Current gas alarms mainly use gas sensors to detect gas concentration to determine whether a gas leak has occurred. However, the installation location of the gas alarm is usually a certain distance away from the actual gas leak point, and it cannot issue a gas leak alarm in a timely and accurate manner. In addition, the gas sensor has poor anti-interference performance and is prone to false alarms in smoke or humid environments.

[0004] In addition, in order to avoid more serious accidents due to gas leaks in confined spaces and crowded areas, a large number of gas alarms are often installed in confined spaces and crowded areas in the hope that they can promptly issue alarms when gas leaks occur. However, precisely because the number of gas alarms has increased significantly, the number of false alarms has also increased. False alarms of gas leaks require a lot of manpower to verify the gas leak situation. When there is a real gas leak, there will be a shortage of gas safety personnel, and personnel cannot be concentrated in time to deal with the ongoing gas leak. Summary of the invention

[0005] The present application provides a gas leak detection method, device, equipment and storage medium, which can accurately infer whether a gas leak has occurred in a space and reduce false alarms.

[0006] In a first aspect, the present application provides a gas leak detection method, the method comprising:

[0007] Obtaining the gas concentration monitored by the first gas alarm;

[0008] When the gas concentration monitored by the first gas alarm is greater than the alarm threshold, a first false alarm value of the first space where the first gas alarm is located is determined according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm;

[0009] When the first false alarm value is less than the false alarm threshold, a gas leak alarm is issued.

[0010] Further, the first false alarm value of the first space where the first gas alarm is located is determined according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm, including:

[0011] according to Determine the first false alarm value, wherein S0 is the first false alarm value, V is the spatial volume of the first space, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, C is the distance between the first gas alarm and the gas device, v is the spatial flow velocity of the first space, and N is the false alarm rate of the first gas alarm.

[0012] Further, the first false alarm value of the first space where the first gas alarm is located is determined according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm, including:

[0013] Determine the first false alarm value of the first space where the first gas alarm is located based on the gas concentration monitored by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, the false alarm rate of the first gas alarm, the gas concentration monitored by the second gas alarm located in the first space, and the distance between the second gas alarm and the gas device.

[0014] Furthermore, the method further comprises:

[0015] If the gas concentration detected by the gas alarm is greater than the dangerous threshold, a gas leak alarm will be issued;

[0016] Wherein, the danger threshold is greater than the alarm threshold.

[0017] Furthermore, the method further comprises:

[0018] Obtaining a false alarm correction value corresponding to the first space;

[0019] The first false alarm value is corrected according to the false alarm correction value.

[0020] Furthermore, the method further comprises:

[0021] Acquire a second false alarm value of a second space adjacent to the first space;

[0022] The first false alarm value is corrected according to the second false alarm value of the second space.

[0023] In a second aspect, the present application provides a gas leak detection device, the device comprising:

[0024] An acquisition module, used to acquire the gas concentration monitored by the first gas alarm;

[0025] a processing module, configured to determine, when the gas concentration monitored by the first gas alarm is greater than an alarm threshold, a first false alarm value of the first space where the first gas alarm is located according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm;

[0026] The processing module is further configured to issue a gas leakage alarm when the first false alarm value is less than a false alarm threshold.

[0027] Further, the processing module determines the first false alarm value of the first space where the first gas alarm is located based on the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm, and is specifically used to:

[0028] according to Determine the first false alarm value, wherein S0 is the first false alarm value, V is the spatial volume of the first space, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, C is the distance between the first gas alarm and the gas device, v is the spatial flow velocity of the first space, and N is the false alarm rate of the first gas alarm.

[0029] Further, the processing module determines a first false alarm value of the first space where the first gas alarm is located according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm, and is specifically used to:

[0030] Determine the first false alarm value of the first space where the first gas alarm is located based on the gas concentration monitored by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, the false alarm rate of the first gas alarm, the gas concentration monitored by the second gas alarm located in the first space, and the distance between the second gas alarm and the gas device.

[0031] Furthermore, the processing module is also used for:

[0032] If the gas concentration detected by the gas alarm is greater than the dangerous threshold, a gas leak alarm will be issued;

[0033] Wherein, the danger threshold is greater than the alarm threshold.

[0034] Furthermore, the processing module is also used for:

[0035] Obtaining a false alarm correction value corresponding to the first space;

[0036] The first false alarm value is corrected according to the false alarm correction value.

[0037] Furthermore, the processing module is also used for:

[0038] Acquire a second false alarm value of a second space adjacent to the first space;

[0039] The first false alarm value is corrected according to the second false alarm value of the second space.

[0040] In a third aspect, the present application provides an electronic device, which includes at least a processor and a memory, and when the processor executes a computer program or instruction stored in the memory, the method of the first aspect is implemented.

[0041] In a fourth aspect, the present application provides a computer-readable storage medium storing a computer program or instructions, which, when executed by a processor, implements the method of the first aspect.

[0042] In this application, the gas concentration monitored by the first gas alarm is obtained; when the gas concentration monitored by the first gas alarm is greater than the alarm threshold, the first false alarm value of the first space where the first gas alarm is located is determined according to the gas concentration monitored by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, and at least one of the false alarm rate of the first gas alarm; when the first false alarm value is less than the false alarm threshold, a gas leak alarm is issued. It can accurately infer whether a gas leak occurs in the space, reduce false alarms, and improve the accuracy of gas leak detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 This is a flow chart of a gas leak detection method provided in this application.

[0045] Figure 2 This is a schematic diagram of determining the distance between a gas alarm and a gas pipeline provided in this application.

[0046] Figure 3 This is a schematic diagram of the structure of a gas alarm provided in this application.

[0047] Figure 4 A process schematic diagram of a gas leak detection method provided in this application.

[0048] Figure 5 This is a schematic diagram of the structure of a gas leak detection device provided in this application.

[0049] Figure 6 This is a schematic diagram of the structure of an electronic device provided in this application. DETAILED DESCRIPTION

[0050] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0051] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0052] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or text entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0053] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0054] The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software code that is capable of performing the functions associated with that element.

[0055] As a green and clean energy, natural gas has been widely used in all walks of life and has also penetrated into the daily lives of residents. However, gas is flammable and explosive. If gas leaks in a relatively closed indoor environment, it is easy to cause fires, explosions and other accidents. Therefore, accurate monitoring of whether gas leaks is one of the important guarantees for protecting the lives and property of residents. The existing ways to monitor gas leaks are: 1. Relying on people's sense of smell to determine whether gas leaks occur in the target area, but this method is greatly affected by people's subjective factors and requires a lot of time and energy to find the gas leak point to determine the gas leak. 2. Use an infrared thermal imager to monitor the temperature change in the target area to determine whether a gas leak occurs, but the infrared thermal imager can only correctly determine whether a gas leak occurs after a period of gas leakage. The actual application timeliness is poor and the cost is high. 3. Using a gas alarm to monitor the gas concentration in the target area to determine whether a gas leak occurs is the most common way to detect gas leaks.

[0056] Current gas alarms mainly use gas sensors to detect gas concentration to determine whether a gas leak has occurred. However, the installation location of the gas alarm is usually a certain distance away from the actual gas leak point, and it cannot issue a gas leak alarm in a timely and accurate manner. In addition, the gas sensor has poor anti-interference performance and is prone to false alarms in smoke or humid environments.

[0057] In addition, in order to avoid more serious accidents caused by gas leaks in confined spaces and crowded areas, a large number of gas alarms are often installed in confined spaces and crowded areas in the hope that they can sound the alarm in time when a gas leak occurs. However, it is precisely because the number of gas alarms has increased significantly that the number of false alarms has also increased. When a gas leak alarm occurs, whether it is a real gas leak or a false alarm, gas safety personnel are required to go to the scene to verify the gas leak. False alarms of gas leaks will waste a lot of manpower, resulting in insufficient gas safety personnel when a real gas leak occurs, and it is impossible to concentrate personnel in time to deal with the ongoing gas leak problem.

[0058] Figure 1 The present invention is a flow chart of a gas leak detection method, which can be applied to an electronic device. The method includes:

[0059] S101: Obtaining the gas concentration monitored by the first gas alarm.

[0060] The electronic device can obtain the gas concentration detected by the first gas alarm to determine whether a gas leak has occurred.

[0061] The electronic device may be a gas alarm, or may be a server, a computer, a mobile terminal or other electronic device with certain computing and storage capabilities.

[0062] S102: When the gas concentration monitored by the first gas alarm is greater than the alarm threshold, determine the first false alarm value of the first space where the first gas alarm is located according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm.

[0063] When the gas concentration detected by the first gas alarm is greater than the alarm threshold, it means that a gas leak may have occurred in the first space where the first gas alarm is located. At this time, the first false alarm value of the first space where the first gas alarm is located can be determined based on the gas concentration detected by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and at least one of the false alarm rate of the first gas alarm.

[0064] Among them, the gas device can be a gas pipeline, a gas furnace or other device that transmits gas or uses gas. The distance between the first gas alarm and the gas device can be the shortest straight-line distance between the first gas alarm and the gas device, or the gas device in the first space can be divided into multiple areas (such as divided into multiple areas on average), and the distance from the first gas alarm to the center of each of the above multiple areas is averaged, and the average distance is used as the distance between the first gas alarm and the gas device, or the distance from the first gas alarm to the center of each of the above multiple areas is weighted and summed, and the weighted sum is used as the distance between the first gas alarm and the gas device. Taking the gas pipeline as an example, Figure 2 This is a schematic diagram for determining the distance between the gas alarm and the gas pipeline. Figure 2 As shown, the gas pipeline in the space where the gas alarm is located is divided into 5 equal sections, and the distance from the gas alarm to the center of each section of the gas pipeline can be averaged as the distance between the gas alarm and the gas pipeline. The weight of the third section of the gas pipeline closest to the gas alarm can also be set to 0.4, the weights of the second and fourth sections of the gas pipeline can be set to 0.2, and the weights of the first and fifth sections of the gas pipeline can be set to 0.1, and the distance from the gas alarm to the center of each section of the gas pipeline can be weighted and summed as the distance between the gas alarm and the gas pipeline. Optionally, when the number of sections divided into the gas pipeline increases, a more representative distance between the gas alarm and the gas pipeline can be obtained, so as to more accurately calculate the false alarm value.

[0065] Taking the gas concentration and the distance between the first gas alarm and the gas device to determine the first false alarm value of the first space as an example, in one embodiment, the first false alarm value of the first space where the first gas alarm is located can be determined according to the following formula:

[0066] S0=C / (LI) (1)

[0067] Where S0 is the first false alarm value of the first space, L is the gas concentration monitored by the first gas alarm, C is the distance between the first gas alarm and the gas device, and I is the alarm threshold. When the gas concentration monitored by the first gas alarm remains unchanged and the distance between the first gas alarm and the gas device is greater, the first false alarm value calculated according to formula (1) is greater, that is, the possibility of a false alarm of a gas leak is greater. In actual situations, since the distance between the first gas alarm and the gas device is greater, the gas concentration at the gas device may differ more from the gas concentration monitored by the first gas alarm. In other words, the lower the reference value of the gas concentration monitored by the first gas alarm, the greater the possibility that the first gas alarm may be affected by oil smoke, steam or moisture, resulting in the monitored gas concentration being greater than the alarm threshold, and a false alarm of a gas leak is greater. Similarly, when the gas concentration monitored by the first gas alarm remains unchanged and the distance between the first gas alarm and the gas device is smaller, the first false alarm value calculated according to formula (1) is smaller, that is, the possibility of a false alarm of a gas leak is smaller. This is also in line with the actual situation that the closer the distance between the first gas alarm and the gas device, the more accurate the monitored gas concentration is, and thus the possibility of a false alarm of a gas leak is lower.

[0068] Taking the gas concentration, the distance between the first gas alarm and the gas device, and the false alarm rate of the first gas alarm to determine the first false alarm value of the first space as an example, the first false alarm value can be determined according to the following formula:

[0069]

[0070] Wherein, S0 is the first false alarm value of the first space, L is the gas concentration monitored by the first gas alarm, C is the distance between the first gas alarm and the gas device, N is the false alarm rate of the first gas alarm, and I is the alarm threshold. Optionally, the false alarm rate of the first gas alarm can be obtained by the number of false alarms of the first gas alarm and the total number of alarms issued by the first gas alarm, or the false alarm rate of the first gas alarm can be obtained by removing abnormal data from the false alarm rates of a large number of gas alarms and averaging them. When the false alarm rate of the first gas alarm is larger, the first false alarm value calculated using formula (2) is also larger, that is, the possibility of false alarm of gas leakage is greater.

[0071] Optionally, when determining the first false alarm value based on the gas concentration, the distance between the first gas alarm and the gas device, the spatial volume of the first space, and the spatial flow rate of the first space, the following formula may be used:

[0072]

[0073] Among them, S0 is the first false alarm value of the first space, L is the gas concentration monitored by the first gas alarm, C is the distance between the first gas alarm and the gas device, V is the spatial volume of the first space, v is the spatial flow rate of the first space, and I is the alarm threshold. Similarly, the first false alarm value can also be calculated based on the gas concentration monitored by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, and the false alarm rate of the first gas alarm.

[0074] S103: When the first false alarm value is less than the false alarm threshold, a gas leakage alarm is issued.

[0075] The false alarm threshold may be preset in the electronic device.

[0076] Optionally, two false alarm thresholds of different sizes can be preset, and the difference between the larger false alarm threshold and the smaller false alarm threshold cannot be greater than 1 times, 1 / 2 times, 1 / 3 times, 1 / 4 times, etc. of the smaller false alarm threshold. When the first false alarm value is less than the smaller false alarm threshold, a gas leak alarm is directly issued; when the first false alarm value is greater than the smaller false alarm threshold and less than the larger false alarm threshold, an early warning for dispatching gas safety personnel to verify the gas leak on site can be issued; when the first false alarm value is greater than the larger false alarm threshold, no gas leak alarm is issued. For example, assume that the smaller false alarm threshold is preset to 0.7 and the larger false alarm threshold is preset to 1.0. When the calculated first false alarm value is 0.5 and less than the smaller false alarm threshold, a gas leak alarm is directly issued; when the calculated first false alarm value is 0.8 and greater than the smaller false alarm threshold and less than the larger false alarm threshold, an early warning for dispatching gas safety personnel to verify the gas leak on site can be issued; when the calculated first false alarm value is 1.2 and greater than the larger false alarm threshold, no gas leak alarm is issued.

[0077] In this application, the gas concentration monitored by the first gas alarm is obtained; when the gas concentration monitored by the first gas alarm is greater than the alarm threshold, the first false alarm value of the first space where the first gas alarm is located is determined according to the gas concentration monitored by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, and at least one of the false alarm rate of the first gas alarm; when the first false alarm value is less than the false alarm threshold, a gas leak alarm is issued. It can accurately infer whether a gas leak occurs in the space, reduce false alarms, and improve the accuracy of gas leak detection.

[0078] Embodiment 2:

[0079] In a possible implementation manner, determining a first false alarm value of the first space where the first gas alarm is located according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm includes:

[0080] The first false alarm value is determined according to the following formula:

[0081]

[0082] Among them, S0 is the first false alarm value, V is the spatial volume of the first space, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, C is the distance between the first gas alarm and the gas device, v is the spatial flow velocity of the first space, and N is the false alarm rate of the first gas alarm.

[0083] Compared with formula (1), formula (2) and formula (3), formula (4) includes all factors that may affect the reliability of the gas concentration detected by the first gas alarm, such as the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, and the false alarm rate of the first gas alarm, and can more accurately determine whether a gas leak occurs in the first space where the first gas alarm is located. For example, formula (1) only takes into account the gas concentration and the distance between the first gas alarm and the gas device. If the false alarm rate of the first gas alarm is high due to reasons such as model and equipment aging, then formula (1) will not be able to well determine whether a gas leak occurs in the first space. For another example, although formula (2) takes into account the false alarm rate of the first gas alarm, it does not take into account that the size of the first space and the spatial flow rate will also affect the size of the first false alarm value, and thus it is not possible to accurately judge whether a real gas leak has occurred based on the first false alarm value. For example, if the air circulation in a room is good, then the small amount of unburned gas, oil smoke and other gases remaining in the room will be removed in time. In addition, when the air circulation is good, it is not easy for excessive dust, condensation droplets, etc. to accumulate on the gas alarm, which is conducive to the gas alarm to monitor the actual gas concentration in the room and make a judgment.

[0084] Embodiment 3:

[0085] In the case where there is a second alarm other than the first gas alarm in the first space, it is possible to comprehensively judge whether a gas leak has occurred in the first space in combination with the data monitored by several second gas alarms located in the first space, in order to more accurately calculate the false alarm rate of the first gas alarm, thereby determining whether a gas leak has occurred in the first space. On the basis of the above embodiments, this embodiment also provides a method for determining a first false alarm value, which includes: determining the first false alarm value of the first space where the first gas alarm is located based on the gas concentration monitored by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, the false alarm rate of the first gas alarm, and the gas concentration monitored by the second gas alarm located in the first space, and the distance between the second gas alarm and the gas device. Optionally, a calculation formula for determining the first false alarm value using this method is provided as follows:

[0086]

[0087] Wherein, S0 is the first false alarm value, V is the spatial volume of the first space, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, C is the distance between the first gas alarm and the gas device, v is the spatial flow rate of the first space, N is the false alarm rate of the first gas alarm, n is the number of second alarms in the first space, L1 is the gas concentration monitored by the first second gas alarm, L n is the gas concentration monitored by the nth second gas alarm, C1 is the distance between the first second gas alarm and the gas device, C n is the distance between the nth second gas alarm and the gas device.

[0088] Embodiment 4:

[0089] In order to enable the false alarm value to more accurately reflect whether a false alarm of gas leakage is issued, in this embodiment, the method further includes:

[0090] Obtain a false alarm correction value corresponding to the first space. The false alarm correction value is used to reduce the first false alarm value when a gas leak occurs and the first false alarm value is greater than the false alarm threshold, so that the first false alarm value of the first space calculated next time can be closer to the actual situation and a gas leak alarm can be correctly issued when a gas leak occurs. In addition, before a gas leak false alarm occurs in the space, a false alarm correction value can be set for each space.

[0091] According to the false alarm correction value, the first false alarm value is corrected. Specifically, the false alarm correction value can be multiplied by the first false alarm value to correct the first false alarm value. It can be understood that if there has been no false alarm of gas leakage in the first space, the false alarm correction value at this time can be 1, that is, the first false alarm value after correction is equal to the first false alarm value before correction. Similarly, the false alarm correction value plus the first false alarm value can be used to correct the first false alarm value. It can be understood that if there has been no false alarm of gas leakage in the first space, the false alarm correction value at this time can be 0. In short, when a false alarm of gas leakage occurs in the first space for the first time or each time, the false alarm correction value needs to be corrected so that the false alarm correction value can provide a correct correction effect at the next gas leakage alarm in the first space, reducing the situation where a real gas leakage alarm is mistakenly regarded as a false alarm of gas leakage.

[0092] For example, the false alarm threshold is set to 0.7. When the first false alarm value is less than 0.7, a gas leak alarm is issued, and gas safety personnel go to the scene (that is, the first space) to deal with the gas leak accident. When the first false alarm value is greater than or equal to 0.7 and less than 1.0, the possibility of a false alarm of a gas leak is high. In order to ensure safety, gas safety personnel are required to go to the scene to verify whether a gas leak has occurred. If a gas leak is confirmed to have occurred, it means that the false alarm value calculated this time is large, resulting in the real gas leak alarm being mistakenly taken as a false alarm of a gas leak. The historical correction value is corrected based on the gas leak alarm situation this time, and the first false alarm value calculated next time is corrected by the corrected historical correction value, in order to more accurately determine whether a gas leak has occurred. In this embodiment, a possible historical correction value correction formula is also provided:

[0093]

[0094] Wherein, K is the corrected historical correction value, S0 is the first false alarm value, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, C is the distance between the first gas alarm and the gas device, n is the number of second alarms in the first space, L1 is the gas concentration monitored by the first second gas alarm, L n is the gas concentration detected by the first second gas alarm, C1 is the distance between the first second gas alarm and the gas device, C n is the distance between the nth second gas alarm and the gas device.

[0095] Embodiment 5:

[0096] Based on the above embodiments, this embodiment provides a possible first false alarm value correction method, which includes:

[0097] Obtain a second false alarm value of a second space adjacent to the first space. Optionally, the second space adjacent to the first space may be preconfigured in the electronic device, and the second false alarm value of each second space adjacent to the first space may be calculated in the same manner as the first false alarm value.

[0098] According to the second false alarm value of the second space, the first false alarm value is corrected. Specifically, the first false alarm value and each second false alarm value can be weighted and summed to correct the first false alarm value. The first false alarm value can also be added to the first false alarm value and the average of each second false alarm value and then opened to correct the first false alarm value. In this embodiment, a possible formula for correcting the first false alarm value is provided:

[0099]

[0100] Among them, S is the first false alarm value after correction, S0 is the first false alarm value before correction, m is the number of second spaces adjacent to the first space, S1 is the second false alarm value of the first second space, S2 is the second false alarm value of the first second space, and S2 is the second false alarm value of the first second space.

[0101] Optionally, if the second error value of the jth second space is larger or smaller, the second false alarm value of the second space is not used to correct the first false alarm value. In addition, the corrected first false alarm value (ie, S) can be used to replace S0 in formula (6) to calculate the corrected false alarm correction value.

[0102] Embodiment 6:

[0103] In a possible implementation manner, in order to ensure the safety of personnel and property as much as possible, the method further includes:

[0104] If the gas concentration detected by the gas alarm is greater than the danger threshold, regardless of whether a gas leak actually occurs, the loss of life and property will be huge. Therefore, there is no need to waste time to determine whether it is a false alarm of a gas leak, but to directly issue a gas leak alarm;

[0105] Wherein, the danger threshold is greater than the alarm threshold.

[0106] Optionally, when the rising speed of the gas concentration detected by the gas alarm is greater than a certain threshold, a gas leakage alarm may also be issued.

[0107] Embodiment 7:

[0108] Based on the gas leak detection methods described in the above embodiments, this embodiment provides a possible gas alarm. Figure 3 A schematic diagram of the structure of a gas alarm provided in an embodiment of the present application, the gas alarm comprising:

[0109] Gas sensor 301, used to monitor gas concentration;

[0110] An air flow rate detection element 302 is used to monitor the air flow rate near the gas alarm;

[0111] The sending unit 303 is used to upload the monitored gas concentration and air flow rate to the server;

[0112] An alarm unit 304 is used to sound a gas leak warning;

[0113] The main control unit 305 is used to receive the data monitored by the gas sensor and the air flow rate detection element, process the data and control the sending unit to upload the data to the server. The main control unit is also used to control the alarm unit to work.

[0114] Embodiment 8:

[0115] Figure 4 A process diagram of a gas leak detection method provided in this application. Figure 4 As shown, the process of the gas leak detection method provided by the present application includes:

[0116] When the gas concentration detected by the first gas alarm is greater than the alarm threshold, a gas leak warning occurs, and the first space where the first gas alarm is located and several second spaces adjacent to the first space are determined. It is determined whether the gas concentration detected by the first gas alarm in the first space is greater than the danger threshold. If it is greater than the danger threshold, a gas leak alarm is directly issued. If it is not greater than the danger threshold, the first false alarm value of the first space and the second false alarm values ​​of several second spaces are calculated respectively. Afterwards, after using the error correction value to correct the first false alarm value, determine whether the first false alarm value is within the false alarm threshold range (the false alarm threshold range is centered on the false alarm threshold and is 1 / 3, 1 / 4, 1 / 5, etc. of the false alarm threshold above and below. For example, the false alarm threshold is 0.7, and 1 / 7 of the false alarm threshold is used as the range of values ​​included in the false alarm threshold range above and below, and the false alarm threshold range is 0.6-0.8). If the first false alarm threshold is less than the minimum value of the false alarm threshold range, it is confirmed to be a real gas leak and a gas leak alarm is issued. If the first false alarm threshold is greater than the minimum value of the false alarm threshold range, the first false alarm value is corrected in combination with the second false alarm values ​​of several second spaces, and whether a gas leak has occurred is determined by the final corrected first false alarm value and the false alarm threshold. Among them, if the final corrected first false alarm value is less than the false alarm threshold, it is confirmed as a real gas leak and a gas leak alarm is issued; if the final corrected first false alarm value is greater than the false alarm threshold and less than the maximum value of the false alarm threshold range, no gas leak alarm is issued but gas safety personnel are still required to verify on-site whether a gas leak has occurred, record the verification results and calibrate the false alarm correction value based on the verification results; if the final corrected first false alarm value is greater than the maximum value of the false alarm threshold range, it is confirmed as a gas leak false alarm.

[0117] Embodiment 9:

[0118] Based on the above gas leak detection method, the present application provides a gas leak detection device. Figure 5 A schematic diagram of the structure of a gas leak detection device provided in an embodiment of the present application, the device comprising:

[0119] An acquisition module 501 is used to acquire the gas concentration monitored by the first gas alarm;

[0120] The processing module 502 is used to determine a first false alarm value of the first space where the first gas alarm is located according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, and the false alarm rate of the first gas alarm when the gas concentration monitored by the first gas alarm is greater than the alarm threshold;

[0121] The processing module 502 is further configured to issue a gas leakage alarm when the first false alarm value is less than a false alarm threshold.

[0122] Further, the processing module 502 determines the first false alarm value of the first space where the first gas alarm is located according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, and the false alarm rate of the first gas alarm, and is specifically used to:

[0123] according to Determine the first false alarm value, wherein S0 is the first false alarm value, V is the spatial volume of the first space, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, C is the distance between the first gas alarm and the gas device, v is the spatial flow velocity of the first space, and N is the false alarm rate of the first gas alarm.

[0124] Further, the processing module 502 determines a first false alarm value of the first space where the first gas alarm is located according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm, specifically for:

[0125] Determine the first false alarm value of the first space where the first gas alarm is located based on the gas concentration monitored by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, the false alarm rate of the first gas alarm, the gas concentration monitored by the second gas alarm located in the first space, and the distance between the second gas alarm and the gas device.

[0126] Furthermore, the processing module 502 is further configured to:

[0127] If the gas concentration detected by the gas alarm is greater than the dangerous threshold, a gas leak alarm will be issued;

[0128] Wherein, the danger threshold is greater than the alarm threshold.

[0129] Furthermore, the processing module 502 is further configured to:

[0130] Obtaining a false alarm correction value corresponding to the first space;

[0131] The first false alarm value is corrected according to the false alarm correction value.

[0132] Furthermore, the processing module 502 is further configured to:

[0133] Acquire a second false alarm value of a second space adjacent to the first space;

[0134] The first false alarm value is corrected according to the second false alarm value of the second space.

[0135] Figure 6 Figure 1 is a schematic diagram of the structure of an electronic device. Figure 6 As shown, the electronic device includes: a processor 601 , a communication interface 602 , a memory 603 and a communication bus 604 , wherein the processor 601 , the communication interface 602 , and the memory 603 communicate with each other via the communication bus 604 .

[0136] The memory 603 stores a computer program, and when the program is executed by the processor 601, the processor 601 implements the steps of any one of the above-mentioned gas leak detection methods.

[0137] The communication bus mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0138] The communication interface 602 is used for communication between the electronic device and other devices.

[0139] The memory may include a random access memory (RAM) or a non-volatile memory (NVM), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0140] The above-mentioned processor can be a general-purpose processor, including a central processing unit, a network processor (Network Processor, NP), etc.; it can also be a digital signal processing processor (Digital Signal Processing, DSP), an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc.

[0141] On the basis of the above embodiments, an embodiment of the present application further provides a computer-readable storage medium, in which a computer program executable by an electronic device is stored. When the program runs on the electronic device, the electronic device implements the steps of any of the above-mentioned gas leak detection methods when executed.

[0142] The above-mentioned computer-readable storage medium can be any available medium or data storage device that can be accessed by the processor in the electronic device, including but not limited to magnetic storage such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc., optical storage such as CD, DVD, BD, HVD, etc., and semiconductor storage such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD), etc.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0144] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

[0145] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0146] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0147] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0148] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0149] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0150] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A gas leak detection method, characterized in that: include: Obtaining the gas concentration monitored by the first gas alarm; When the gas concentration monitored by the first gas alarm is greater than the alarm threshold, a first false alarm value of the first space where the first gas alarm is located is determined according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow velocity of the first space, and the false alarm rate of the first gas alarm; When the first false alarm value is less than the false alarm threshold, a gas leak alarm is issued; According to the formula S0=C / (LI), the first false alarm value of the first space where the first gas alarm is located is determined, wherein S0 is the first false alarm value, C is the distance between the first gas alarm and the gas device, L is the gas concentration monitored by the first gas alarm, and I is the alarm threshold; or According to the formula Determine a first false alarm value of a first space where the first gas alarm is located, where S0 is the first false alarm value, C is the distance between the first gas alarm and the gas device, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, and N is the false alarm rate of the first gas alarm; or According to the formula Determine a first false alarm value of a first space where the first gas alarm is located, wherein S0 is the first false alarm value, C is the distance between the first gas alarm and the gas device, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, V is the spatial volume of the first space, and v is the spatial flow rate of the first space; or According to the formula Determine a first false alarm value of the first space where the first gas alarm is located, wherein S0 is the first false alarm value, C is the distance between the first gas alarm and the gas device, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, N is the false alarm rate of the first gas alarm, V is the spatial volume of the first space, and v is the spatial flow velocity of the first space.

2. The method according to claim 1, characterized in that The process of determining a first false alarm value of a first space where the first gas alarm is located further includes: According to the gas concentration monitored by the first gas alarm, the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, the false alarm rate of the first gas alarm, and the gas concentration monitored by the second gas alarm located in the first space, and the distance between the second gas alarm and the gas device, the first false alarm value of the first space where the first gas alarm is located is determined; wherein, according to the formula Determining a first false alarm value of a first space where the first gas alarm is located; Wherein, S0 is the first false alarm value, V is the spatial volume of the first space, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, C is the distance between the first gas alarm and the gas device, v is the spatial flow rate of the first space, N is the false alarm rate of the first gas alarm, n is the number of second alarms in the first space, L1 is the gas concentration monitored by the first second gas alarm, L n is the gas concentration monitored by the nth second gas alarm, C1 is the distance between the first second gas alarm and the gas device, C n is the distance between the nth second gas alarm and the gas device.

3. The method according to claim 1, characterized in that The method further comprises: If the gas concentration detected by the gas alarm is greater than the dangerous threshold, a gas leak alarm will be issued; Wherein, the danger threshold is greater than the alarm threshold.

4. The method according to claim 1 or 2, characterized in that: The method further comprises: Obtaining a false alarm correction value corresponding to the first space; The first false alarm value is corrected according to the false alarm correction value.

5. The method according to claim 1, characterized in that The method further comprises: Acquire a second false alarm value of a second space adjacent to the first space; The first false alarm value is corrected according to the second false alarm value of the second space.

6. A gas leak detection device, characterized in that: The device includes: An acquisition module, used to acquire the gas concentration monitored by the first gas alarm; A processing module, used for determining a first false alarm value of the first space where the first gas alarm is located according to the gas concentration monitored by the first gas alarm, and at least one of the distance between the first gas alarm and the gas device, the spatial volume of the first space where the first gas alarm is located, the spatial flow rate of the first space, and the false alarm rate of the first gas alarm when the gas concentration monitored by the first gas alarm is greater than an alarm threshold; wherein the first false alarm value of the first space where the first gas alarm is located is determined according to the formula S0=C / (L-1), wherein S0 is the first false alarm value, C is the distance between the first gas alarm and the gas device, L is the gas concentration monitored by the first gas alarm, and I is the alarm threshold; or According to the formula Determine a first false alarm value of a first space where the first gas alarm is located, where S0 is the first false alarm value, C is the distance between the first gas alarm and the gas device, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, and N is the false alarm rate of the first gas alarm; or According to the formula Determine a first false alarm value of a first space where the first gas alarm is located, wherein S0 is the first false alarm value, C is the distance between the first gas alarm and the gas device, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, V is the spatial volume of the first space, and v is the spatial flow rate of the first space; or According to the formula Determine a first false alarm value of a first space where the first gas alarm is located, where S0 is the first false alarm value, C is the distance between the first gas alarm and the gas device, L is the gas concentration monitored by the first gas alarm, I is the alarm threshold, N is the false alarm rate of the first gas alarm, V is the spatial volume of the first space, and v is the spatial flow rate of the first space; The processing module is further configured to issue a gas leakage alarm when the first false alarm value is less than a false alarm threshold.

7. An electronic device, characterized in that: The electronic device comprises at least a processor and a memory, and when the processor executes a computer program or instruction stored in the memory, the method according to any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium, characterized in that: The computer program or instruction is stored therein, and when the computer program or instruction is executed by a processor, the method as claimed in any one of claims 1 to 5 is implemented.

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