An environmental alarm control system for industrial or commercial sites based on gas detection

Abstract

The present invention relates to the field of environmental safety management technology, and specifically to an environmental alarm control system for industrial or commercial sites based on gas detection, comprising: a design layer, a detection layer, and an alarm layer; the construction structure parameters of the target site are uploaded through the design layer, and the design layer constructs a three-dimensional model of the target site based on the construction structure parameters of the target site, and further selects a location in the three-dimensional model of the target site as a sensor deployment location for sensor deployment, and receives the operation perception information of each sensor in real time, and the detection layer synchronously receives the latest sensor operation perception information received in the design layer. The present invention, through sensor design and deployment, enables the deployed sensors to adaptively and comprehensively monitor the combustible gas concentration of the target site, and simultaneously uses each sensor as a monitoring target to determine the safety risk of the target site, effectively improving the safety of daily use of combustible gas in combustible gas usage scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental safety management, and in particular to an environmental alarm control system for industrial or commercial sites based on gas detection. Background Art

[0002] Combustible gases are gases that, under certain conditions, can mix with air to form a flammable mixture that can burn or even explode when exposed to a fire source. Common examples include natural gas, liquefied petroleum gas, and hydrogen. These gases are widely used in many fields, including energy and chemical engineering. However, leaks during use can be dangerous, making safety precautions and monitoring crucial.

[0003] The invention patent with application number 202311171982.6 discloses a gas detection method for a wall-mounted gas detection alarm, including: S10: detecting the concentration of a specified gas in the gas by the NDIR method; S20: coupling the ambient temperature to the concentration detected by S10 through a temperature compensation model to calculate the concentration value of the specified gas; wherein, the temperature compensation model includes the construction and training of an RBF neural network; S30: displaying the specified gas concentration value in real time on the upper computer monitoring interface: S40: sounding and visual alarming through the alarm according to the specified gas concentration value calculated by S20 and the set parameter value.

[0004] This application aims to solve the problem that "the current wall-mounted gas detection alarms have problems such as sensor aging and failure due to the reaction of the catalyst in the sensor with harmful substances in the air, which makes the sensor life short and requires frequent replacement of sensors to ensure the normal use of the alarm. At the same time, the catalytic combustion method is not selective in testing the components in the air and is easily interfered by other gases. It is also difficult to detect the concentration of combustible gases in an oxygen-deficient environment. The presence of toxic gases such as hydrogen sulfide and arsenide can easily poison the sensor and cause it to fail. Catalytic combustion wall-mounted gas detection alarms are prone to false alarms, failures and other problems."

[0005] However, combustible gas is widely used as an energy gas in industrial and commercial scenarios. Although it brings convenience to life and production, it also brings safety hazards such as explosions and fires. In order to control these hazards, existing technologies use targeted sensors to sense the leakage of combustible gas, thereby achieving the control of hidden dangers. However, this type of existing technology is usually low in intelligence and can only make simple judgments, especially with poor immediacy.

[0006] Therefore, an environmental alarm control system for industrial or commercial sites based on gas detection is proposed. Summary of the Invention

[0007] In view of the above shortcomings of the prior art, the present invention provides an environmental alarm control system for industrial or commercial sites based on gas detection, which solves the technical problems raised in the above background technology.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] An environmental alarm control system for industrial or commercial sites based on gas detection, comprising: a design layer, a detection layer, and an alarm layer;

[0010] The construction structure parameters of the target site are uploaded through the design layer. The design layer constructs a three-dimensional model of the target site based on the construction structure parameters of the target site. The design layer further selects a location in the three-dimensional model of the target site as the sensor deployment location for sensor deployment and receives the operation perception information of each sensor in real time. The detection layer synchronously receives the latest sensor operation perception information received in the design layer, detects whether there is a security threat in the target site based on the sensor operation perception information, and simultaneously evaluates the sensor health status based on the sensor's historical operation perception information. The early warning layer operates to obtain the detection layer's detection results on whether there is a security threat in the target site and the sensor health status evaluation results, issues an alarm based on the detection results, and generates a sensor message to be maintained based on the evaluation results;

[0011] The detection layer includes a detection module, an evaluation module and a transmission module. The detection module is used to receive the latest sensor operation perception information received in the design layer, and detect whether there is a security threat in the target location based on the sensor operation perception information. The evaluation module is used to traverse the historical sensor operation perception information in the design layer and evaluate the sensor health status based on the historical sensor operation perception information. The transmission module is used to receive the detection results and evaluation results obtained by the detection module and the evaluation module, and transmit the two results to the alarm layer.

[0012] The detection logic of whether the target location has a security threat in the detection module is expressed as follows: Where: The current security threat performance value of the target location; is the current combustible gas concentration in the target location; is the lower explosion limit concentration of gas; is the current ambient temperature of the target location; is the control function; The current ambient humidity of the target location; The density of people in the target place; Ventilation efficiency for target locations; is the danger determination threshold;

[0013] Among them, the current security threat performance value of the target location The larger the value, the higher the current security threat level of the target location. The current security threat performance value of the target location is calculated based on the above formula (1) by the user of the system. , and is determined by formula (2). When formula (2) is established, it means that there is a security threat at the target location. Otherwise, it means that there is no security threat at the target location. The control function The value is obeyed, , Take the minimum value, which is defined by the system user, and the minimum value is initially set to , , ,Based on the above formula, the operating perception information of each sensor is used as the calculation target, and the current security threat performance value of each sensor's deployment location is obtained.

[0014] Furthermore, the design layer includes a construction module, a deployment module, and an interaction module. The construction module is used to upload the structural parameters of the target site and build a three-dimensional model of the target site based on the structural parameters of the target site. The deployment module is used to obtain the three-dimensional model of the target site constructed by the construction module and select the sensor deployment position in the three-dimensional model of the target site. The interaction module is used to receive real-time sensor operation perception information.

[0015] The interaction module is provided with submodules at the lower level, including:

[0016] The management unit is used to obtain the real-time sensor operation perception information received by the interactive module and store the real-time sensor operation perception information;

[0017] Among them, after the three-dimensional model of the target site is constructed, the system end user further sets the combustible gas pipeline distribution area in the three-dimensional model of the target site, and uses the combustible gas pipeline distribution area as the sensor deployment target area. The sensor is a combustible gas sensor, and each sensor operation perception information is marked based on the corresponding selected deployment position of its source sensor in the three-dimensional model of the target site. When the management unit stores the real-time operation perception information of the sensor, it distinguishes and stores it based on the mark of the perception information. The sensor operation perception information is the combustible gas concentration, ambient humidity, and ambient temperature in the environment of its own deployment location.

[0018] Furthermore, after obtaining the three-dimensional model of the target site with the combustible gas pipeline distribution area set, the deployment module further captures a model surface close to the combustible gas pipeline in the combustible gas pipeline distribution area, and then captures the closest point on all model surfaces at a distance from the initial end surface of the combustible gas pipeline as the deployment position of the first sensor, further sets the sensor deployment logic, and deploys the sensors based on the sensor deployment logic;

[0019] Among them, the sensor deployment positions selected in the three-dimensional model of the target site of the deployment module are the first sensor deployment positions and the sensor deployment positions determined based on the sensor deployment logic. The polylines obtained by connecting all adjacent sensor deployment positions are in the same direction as the combustible gas pipeline. After all sensor deployment positions are determined on the model surface, sensors are deployed at the corresponding positions of the sensor deployment positions determined on the model surface in the target site.

[0020] Furthermore, the sensor deployment logic is: Where: Deployment quantity of sensors; Deployment quantity base for sensors; is the total length of the combustible gas pipeline in the combustible gas pipeline distribution area; It is the total volume of branch pipelines on the main combustible gas pipeline; It is the difference between the transmission path distance between the i-th branch road and the previous branch road on the main trunk road of the combustible gas pipeline and the transmission path distance between the i+1-th branch road and the i-th branch road; is the average value of the transmission path distance between two adjacent branches on the main trunk of the combustible gas pipeline; is the spatial volume of the combustible gas pipeline distribution area; is the spatial distance of the three-dimensional model of the target location;

[0021] Among them, the number of sensors deployed in the above formula is The value is rounded up, the base number of sensor deployment is a positive integer defined by the system user. Used to indicate the complexity of combustible gas pipelines. The smaller the value, the more complex the combustible gas pipeline is, and the more sensors are designed to be deployed. The larger the value, the less complex the combustible gas pipeline is, and the smaller the number of designed sensors to be deployed.

[0022] Furthermore, during the operation phase, the operating frequency of the sensor complies with:

[0023] System end users set the peak period of combustible gas usage based on the historical usage parameters of combustible gas;

[0024] Set the initial operating frequency of the sensor, apply the initial operating frequency of the sensor to control the sensor operation, identify the time distance between the current operating timestamp of the sensor and the peak period of combustible gas usage, the closer the distance, the higher the sensor operating frequency, conversely, the lower the sensor operating frequency. When the real-time operating timestamp of the sensor reaches the peak period of combustible gas usage, the latest applied operating frequency is configured for the peak period of combustible gas usage;

[0025] Among them, during the process of continuous change of the sensor operating frequency based on the above logic, the sensor operating frequency is always lower than the initial operating frequency of the sensor. The ratio of the sensor operating frequency change to time is customized by the system end user, and the system end user independently decides to modify the peak period of combustible gas use.

[0026] Furthermore, the sensor operation perception information received and traversed by the detection module and the evaluation module all comes from the management unit;

[0027] The detection module detects whether there is a security threat in the target location and transmits the result to the alarm layer through the transmission module first. The alarm layer is triggered to run synchronously after receiving the detection result. The evaluation module evaluates the health status of the sensor and transmits it to the alarm layer through the transmission module. After receiving the evaluation result and completing the operation based on the detection result, the alarm layer is triggered again to generate a sensor message to be maintained.

[0028] Among them, the alarm layer ends its operation when receiving a negative detection result.

[0029] Furthermore, the sensor operation perception information received and traversed by the detection module and the evaluation module all comes from the management unit;

[0030] The detection module detects whether there is a security threat in the target location and transmits the result to the alarm layer through the transmission module first. The alarm layer is triggered to run synchronously after receiving the detection result. The evaluation module evaluates the health status of the sensor and transmits it to the alarm layer through the transmission module. After receiving the evaluation result and completing the operation based on the detection result, the alarm layer is triggered again to generate a sensor message to be maintained.

[0031] Among them, the alarm layer ends its operation when receiving a negative detection result.

[0032] Furthermore, the alarm layer includes an alarm module, a message module, and a visualization module. The alarm module is used to receive the results of the detection module and issue an alarm message when the monitoring result indicates that the target location currently has a security threat. The message module is used to receive the results of the evaluation module and use the sensors assessed as unhealthy in the evaluation results as picking targets. The corresponding sensor positions are picked in the three-dimensional model of the target location and a message is generated based on the picked sensor positions. The visualization module is used to receive the message and use the message to render the three-dimensional model of the target location.

[0033] Among them, the alarm module is integrated with a buzzer, and the alarm information is the audio emitted by the buzzer. During the operation of the alarm module, all valves on the combustible gas pipelines in the target location are closed synchronously. The message content generated by the message module is the deployment location of all sensors with unhealthy evaluation results in the three-dimensional model of the target location.

[0034] Furthermore, during the operation phase of the visualization module, the message is received, the positions contained in the message are traversed, a closed area is constructed based on the adjacent and interconnected groups of positions from a bird's-eye view of the three-dimensional model of the target location, a risk impact range is further set, the closed area is used as an expansion target, and the radius of the risk impact range is used as the expansion length, and the closed area is expanded equidistantly. The expanded closed area is recorded as a risk area within the area defined in the three-dimensional model of the target location;

[0035] The risk impact range is customized by the system user, and the risk area is rendered synchronously in the three-dimensional model of the target location to complete the display of the risk area in the three-dimensional model of the target location.

[0036] Furthermore, the detection module is interactively connected to the evaluation module and the transmission module through a wireless network, the detection module and the evaluation module are interactively connected to the management unit through a wireless network, the management unit is interactively connected to the interaction module through a wireless network, the interaction module is interactively connected to the construction module and the deployment module through a wireless network, the transmission module is interactively connected to the alarm module through a wireless network, and the alarm module is interactively connected to the message module and the visualization module through a wireless network.

[0037] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0038] The present invention provides an environmental alarm control system for industrial or commercial sites based on gas detection. During operation, the system, through sensor design and deployment, enables the deployed sensors to adaptively and comprehensively monitor the combustible gas concentration in the target site. Each sensor is simultaneously used as a monitoring target to determine the safety risk of the target site, effectively improving the safety of combustible gas in daily use scenarios. Moreover, through the setting of detection logic in the system, the safety detection accuracy of combustible gas in the target site can be adaptively controlled, thereby improving the accuracy and response efficiency of the system's safety detection and early warning of combustible gas to a certain extent.

[0039] At the same time, the system can also perform self-inspections on sensors, thereby effectively identifying faulty or functionally inadequate sensors. This provides system users with further sensor management conditions, ensuring that the system is always equipped with reliable sensors for environmental safety control and early warning at the gas level in target locations. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0041] Figure 1 The diagram is a structural diagram of an environmental alarm control system for industrial or commercial sites based on gas detection. DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] The present invention will be further described below with reference to the embodiments.

[0044] Example 1

[0045] This embodiment is based on a gas detection industrial or commercial environment alarm control system, such as Figure 1 As shown, it includes: design layer, detection layer, and alarm layer;

[0046] The construction structure parameters of the target site are uploaded through the design layer. The design layer constructs a three-dimensional model of the target site based on the construction structure parameters of the target site. The design layer further selects a location in the three-dimensional model of the target site as the sensor deployment location for sensor deployment and receives the operation perception information of each sensor in real time. The detection layer synchronously receives the latest sensor operation perception information received in the design layer, detects whether there is a security threat in the target site based on the sensor operation perception information, and simultaneously evaluates the sensor health status based on the sensor's historical operation perception information. The early warning layer operates to obtain the detection layer's detection results on whether there is a security threat in the target site and the sensor health status evaluation results, issues an alarm based on the detection results, and generates a sensor message to be maintained based on the evaluation results;

[0047] The design layer includes a construction module, a deployment module, and an interaction module. The construction module is used to upload the structural parameters of the target site and build a three-dimensional model of the target site based on the structural parameters. The deployment module is used to obtain the three-dimensional model of the target site constructed by the construction module and select the sensor deployment location in the three-dimensional model of the target site. The interaction module is used to receive real-time sensor operation perception information.

[0048] The interaction module is divided into submodules, including:

[0049] The management unit is used to obtain the real-time sensor operation perception information received by the interactive module and store the real-time sensor operation perception information;

[0050] Among them, after the three-dimensional model of the target site is constructed, the system end user further sets the combustible gas pipeline distribution area in the three-dimensional model of the target site, and uses the combustible gas pipeline distribution area as the sensor deployment target area. The sensor is a combustible gas sensor. Each sensor operation perception information is marked based on the corresponding selected deployment position of its source sensor in the three-dimensional model of the target site. When the management unit stores the real-time operation perception information of the sensor, it distinguishes and stores it based on the mark of the perception information. The sensor operation perception information is the combustible gas concentration, ambient humidity, and ambient temperature in the environment of its own deployment location;

[0051] The sensor deployment logic is: Where: Deployment quantity of sensors; Deployment quantity base for sensors; is the total length of the combustible gas pipeline in the combustible gas pipeline distribution area; It is the total volume of branch pipelines on the main combustible gas pipeline; It is the difference between the transmission path distance between the i-th branch road and the previous branch road on the main trunk road of the combustible gas pipeline and the transmission path distance between the i+1-th branch road and the i-th branch road; is the average value of the transmission path distance between two adjacent branches on the main trunk of the combustible gas pipeline; is the spatial volume of the combustible gas pipeline distribution area; is the spatial distance of the three-dimensional model of the target location;

[0052] Among them, the number of sensors deployed in the above formula is The value is rounded up, the base number of sensor deployment is a positive integer defined by the system user. Used to indicate the complexity of combustible gas pipelines. The smaller the value, the more complex the combustible gas pipeline is, and the more sensors are designed to be deployed. The larger the value, the less complex the combustible gas pipeline is, and the smaller the number of designed sensor deployments is. The number of sensor deployments is designed through the calculation of the above logical formula to ensure that the sensors deployed in the target location can meet the perception needs of environmental gas information.

[0053] During the operation phase, the sensor operates at a frequency that follows:

[0054] System end users set the peak period of combustible gas usage based on the historical usage parameters of combustible gas;

[0055] Set the initial operating frequency of the sensor, apply the initial operating frequency of the sensor to control the sensor operation, identify the time distance between the current operating timestamp of the sensor and the peak period of combustible gas usage, the closer the distance, the higher the sensor operating frequency, conversely, the lower the sensor operating frequency. When the real-time operating timestamp of the sensor reaches the peak period of combustible gas usage, the latest applied operating frequency is configured for the peak period of combustible gas usage;

[0056] Among them, in the process of continuous change of the sensor operating frequency based on the above logic, the sensor operating frequency is always lower than the initial operating frequency of the sensor. The ratio of the sensor operating frequency change to time is customized by the system end user, and the system end user independently decides to modify the peak period of combustible gas use;

[0057] The detection layer includes a detection module, an evaluation module, and a transmission module. The detection module is used to receive the latest sensor operation perception information received in the design layer, and detect whether there is a security threat in the target location based on the sensor operation perception information. The evaluation module is used to traverse the historical sensor operation perception information in the design layer and evaluate the sensor health status based on the historical sensor operation perception information. The transmission module is used to receive the detection results and evaluation results obtained by the detection module and the evaluation module, and transmit the two results to the alarm layer.

[0058] The detection logic of whether there is a security threat in the target location in the detection module is expressed as: Where: The current security threat performance value of the target location; is the current combustible gas concentration in the target location; is the lower explosion limit concentration of gas; is the current ambient temperature of the target location; is the control function; The current ambient humidity of the target location; The density of people in the target place; Ventilation efficiency for target locations; is the danger determination threshold;

[0059] Among them, the current security threat performance value of the target location The larger the value, the higher the current security threat level of the target location. The current security threat performance value of the target location is calculated based on the above formula (1) by the user of the system. , and is determined by formula (2). When formula (2) is established, it means that there is a security threat at the target location. Otherwise, it means that there is no security threat at the target location. The control function The value is obeyed, , Take the minimum value, which is defined by the system user, and the minimum value is initially set to , , ,Based on the above formula, taking the operating perception information of each sensor as the calculation target, the current security threat performance value of each sensor's deployment location is obtained;

[0060] Through the above logic formula, the current security threat performance value of the target location for each sensor is calculated, so that the security determination of the target location has been supported by the necessary determination data.

[0061] The goal of evaluating the sensor health status in the evaluation module is to evaluate each deployed sensor. The sensor health status evaluation logic is expressed as:

[0062] Select a sensor as the health status assessment target, denoted as Y;

[0063] Obtain all the sensing information belonging to the assessment target Y, that is, the combustible gas concentration, and sort the sensing time of each sensing information;

[0064] Sequentially traverse each group of sensor information in the sorted results to identify whether there are at least two consecutive zero sensor information in the sorted results. If the identification result is yes, use the two sensors adjacent to the evaluation target Y as auxiliary evaluation targets, denoted as X and Z, and obtain the sensor information of X and Z that has the same perception time as the identified sensor information;

[0065] If the acquired perception information is all zero, the evaluation result of the evaluation target Y is healthy; otherwise, the evaluation result is unhealthy.

[0066] Among them, there is at least one set of auxiliary evaluation targets, and based on the above logic, the health status of each sensor is evaluated;

[0067] The alarm layer includes an alarm module, a message module, and a visualization module. The alarm module is used to receive the results of the detection module and issue an alarm message when the monitoring result indicates that the target location currently has a security threat. The message module is used to receive the results of the evaluation module and use the sensors assessed as unhealthy in the evaluation results as the picking targets. The corresponding sensor positions are picked in the 3D model of the target location and a message is generated based on the picked sensor positions. The visualization module is used to receive the message and use the message to render the 3D model of the target location.

[0068] The alarm module is integrated with a buzzer, and the alarm information is the audio emitted by the buzzer. When the alarm module is running, all valves on the combustible gas pipelines in the target site are synchronously closed. The message module generates messages containing the deployment locations of all sensors with unhealthy assessment results in the three-dimensional model of the target site.

[0069] The detection module is interactively connected to the evaluation module and the transmission module through a wireless network. The detection module and the evaluation module are interactively connected to the management unit through a wireless network. The management unit is interactively connected to the interaction module through a wireless network. The interaction module is interactively connected to the construction module and the deployment module through a wireless network. The transmission module is interactively connected to the alarm module through a wireless network. The alarm module is interactively connected to the message module and the visualization module through a wireless network.

[0070] In this embodiment, the construction module runs to upload the structural parameters of the target site, and builds a three-dimensional model of the target site based on the structural parameters of the target site. The deployment module runs to obtain the three-dimensional model of the target site built by the construction module, and selects the sensor deployment position in the three-dimensional model of the target site. The interaction module further receives the real-time operation perception information of the sensor, and the management unit synchronously obtains the real-time operation perception information of the sensor received by the interaction module, stores the real-time operation perception information of the sensor, and then the detection module receives the latest received sensor operation perception information in the design layer, and detects whether there is a security threat in the target site based on the sensor operation perception information. The evaluation module traverses the sensor in the design layer in real time. The historical operation perception information of the sensor is collected and the health status of the sensor is evaluated based on the historical operation perception information of the sensor. The transmission module then runs to receive the detection results and evaluation results obtained by the detection module and the evaluation module, and transmits the two results to the alarm layer. Finally, the detection module operation result is received through the alarm module. When the monitoring result shows that there is a security threat in the target place, an alarm message is issued. The message module synchronously receives the operation result of the evaluation module, and takes the sensor assessed as unhealthy in the evaluation result as the picking target. The picking operation of the corresponding sensor position is performed in the three-dimensional model of the target place, and a message is generated based on the picked sensor position. The visualization module receives the message in real time and applies the message to render the three-dimensional model of the target place.

[0071] Through the operation of the system in the above embodiment, a comprehensive detection technology is provided for the safe management of combustible gas, which is particularly suitable for industrial and commercial scenarios where combustible gas is used as energy, and effectively improves the safety of such gas usage scenarios.

[0072] Example 2

[0073] In terms of specific implementation, based on Example 1, this example refers to Figure 1 The following further describes an environmental alarm control system for industrial or commercial sites based on gas detection in Example 1:

[0074] After acquiring the three-dimensional model of the target site with the combustible gas pipeline distribution area, the deployment module further captures the model surface close to the combustible gas pipeline in the combustible gas pipeline distribution area. The closest point on all model surfaces is captured based on the distance from the initial end surface of the combustible gas pipeline as the deployment location of the first sensor. The sensor deployment logic is further set and the sensors are deployed based on the sensor deployment logic.

[0075] Among them, the sensor deployment positions selected in the three-dimensional model of the target site of the deployment module are the first sensor deployment positions and the sensor deployment positions determined based on the sensor deployment logic. The polylines obtained by connecting all adjacent sensor deployment positions are in the same direction as the combustible gas pipeline. After all sensor deployment positions are determined on the model surface, sensors are deployed at the corresponding positions of the sensor deployment positions determined on the model surface in the target site.

[0076] Through the above settings, the deployment logic of the sensor in the deployment module is further limited.

[0077] like Figure 1 As shown, the sensor operation perception information received and traversed by the detection module and the evaluation module all comes from the management unit;

[0078] The detection module detects whether there is a security threat in the target location and transmits the result to the alarm layer through the transmission module first. The alarm layer is triggered to run synchronously after receiving the detection result. The evaluation module evaluates the sensor health status and transmits it to the alarm layer through the transmission module. After receiving the evaluation result and completing the operation based on the detection result, the alarm layer is triggered to run again to generate a sensor message to be maintained.

[0079] Among them, the alarm layer ends its operation when receiving a negative detection result.

[0080] Through the above settings, further linkage operation logic is provided for the operation of modules in the detection layer and alarm layer of the system in the above embodiment 1.

[0081] like Figure 1 As shown, the alarm layer includes an alarm module, a message module, and a visualization module. The alarm module is used to receive the results of the detection module. When the monitoring result shows that the target location currently has a security threat, it issues an alarm message. The message module is used to receive the results of the evaluation module. It uses the sensors that are assessed as unhealthy in the evaluation results as the picking targets, performs the picking operation of the corresponding sensor positions in the three-dimensional model of the target location, and generates messages based on the picked sensor positions. The visualization module is used to receive the messages and use the messages to render the three-dimensional model of the target location.

[0082] Among them, the alarm module is integrated with a buzzer, and the alarm information is the audio emitted by the buzzer. During the operation of the alarm module, all valves on the combustible gas pipelines in the target location are closed synchronously. The message content generated by the message module is the deployment location of all sensors with unhealthy evaluation results in the three-dimensional model of the target location.

[0083] Through the above settings, further operation data and logic support are provided for the alarm layer of the system in the above embodiment 1, ensuring the stable operation of the system alarm layer.

[0084] In summary, during the operation of the system in the above embodiment, the sensor design and deployment are used to enable the deployed sensors to adaptively and comprehensively monitor the combustible gas concentration in the target location, and each sensor is simultaneously used as a monitoring target to determine the safety risk of the target location, thereby effectively improving the safety of daily use of combustible gases in combustible gas usage scenarios. Moreover, through the setting of the detection logic in the system, the safety detection accuracy of combustible gases in the target location can be adaptively controlled, thereby improving the accuracy and response efficiency of the system's safety detection and early warning of combustible gases to a certain extent. At the same time, the system can also perform self-inspections on sensors, thereby effectively identifying sensors with faults or functional deficiencies, thereby further providing system end users with sensor management conditions, so that the system is always equipped with reliable sensors for environmental safety control and early warning at the gas level of the target location.

[0085] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An environmental alarm control system for industrial or commercial sites based on gas detection, characterized in that: include: Design layer, detection layer, alarm layer; The construction structure parameters of the target site are uploaded through the design layer. The design layer constructs a three-dimensional model of the target site based on the construction structure parameters of the target site. The design layer further selects a location in the three-dimensional model of the target site as the sensor deployment location for sensor deployment and receives the operation perception information of each sensor in real time. The detection layer synchronously receives the latest sensor operation perception information received in the design layer, detects whether there is a security threat in the target site based on the sensor operation perception information, and simultaneously evaluates the sensor health status based on the sensor's historical operation perception information. The early warning layer operates to obtain the detection layer's detection results on whether there is a security threat in the target site and the sensor health status evaluation results, issues an alarm based on the detection results, and generates a sensor message to be maintained based on the evaluation results; The detection layer includes a detection module, an evaluation module and a transmission module. The detection module is used to receive the latest sensor operation perception information received in the design layer, and detect whether there is a security threat in the target location based on the sensor operation perception information. The evaluation module is used to traverse the historical sensor operation perception information in the design layer and evaluate the sensor health status based on the historical sensor operation perception information. The transmission module is used to receive the detection results and evaluation results obtained by the detection module and the evaluation module, and transmit the two results to the alarm layer. The detection logic of whether the target location has a security threat in the detection module is expressed as follows: Where: The current security threat performance value of the target location; is the current combustible gas concentration in the target location; is the lower explosion limit concentration of gas; is the current ambient temperature of the target location; is the control function; The current ambient humidity of the target location; The density of people in the target place; Ventilation efficiency for target locations; is the danger determination threshold; Among them, the current security threat performance value of the target location The larger the value, the higher the current security threat level of the target location. The current security threat performance value of the target location is calculated based on the above formula (1) by the user of the system. , and is determined by formula (2). When formula (2) is established, it means that there is a security threat at the target location. Otherwise, it means that there is no security threat at the target location. The control function The value is obeyed, , Take the minimum value, which is defined by the system user, and the minimum value is initially set to , , ,Based on the above formula, the operating perception information of each sensor is used as the calculation target, and the current security threat performance value of each sensor's deployment location is obtained.

2. The gas detection-based industrial or commercial environment alarm control system according to claim 1, characterized in that: The design layer includes a construction module, a deployment module, and an interaction module. The construction module is used to upload the structural parameters of the target site and build a three-dimensional model of the target site based on the structural parameters of the target site. The deployment module is used to obtain the three-dimensional model of the target site built by the construction module and select the sensor deployment position in the three-dimensional model of the target site. The interaction module is used to receive real-time sensor operation perception information. The interaction module is provided with submodules at the lower level, including: The management unit is used to obtain the real-time sensor operation perception information received by the interactive module and store the real-time sensor operation perception information; Among them, after the three-dimensional model of the target site is constructed, the system end user further sets the combustible gas pipeline distribution area in the three-dimensional model of the target site, and uses the combustible gas pipeline distribution area as the sensor deployment target area. The sensor is a combustible gas sensor, and each sensor operation perception information is marked based on the corresponding selected deployment position of its source sensor in the three-dimensional model of the target site. When the management unit stores the real-time operation perception information of the sensor, it distinguishes and stores it based on the mark of the perception information. The sensor operation perception information is the combustible gas concentration, ambient humidity, and ambient temperature in the environment of its own deployment location.

3. The gas detection-based industrial or commercial environment alarm control system according to claim 2, characterized in that: After obtaining a three-dimensional model of a target site with a distribution area of combustible gas pipelines, the deployment module further captures a model surface close to the combustible gas pipelines in the distribution area of the combustible gas pipelines, and then captures the closest point on all model surfaces at a distance from the initial end surface of the combustible gas pipelines as the deployment location of the first sensor, further sets sensor deployment logic, and deploys sensors based on the sensor deployment logic; Among them, the sensor deployment positions selected in the three-dimensional model of the target site of the deployment module are the first sensor deployment positions and the sensor deployment positions determined based on the sensor deployment logic. The polylines obtained by connecting all adjacent sensor deployment positions are in the same direction as the combustible gas pipeline. After all sensor deployment positions are determined on the model surface, sensors are deployed at the corresponding positions of the sensor deployment positions determined on the model surface in the target site.

4. The gas detection-based industrial or commercial environment alarm control system according to claim 1, characterized in that: The sensor deployment logic is: Where: Deployment quantity of sensors; Deployment quantity base for sensors; is the total length of the combustible gas pipeline in the combustible gas pipeline distribution area; It is the total volume of branch pipelines on the main combustible gas pipeline; It is the difference between the transmission path distance between the i-th branch road and the previous branch road on the main trunk road of the combustible gas pipeline and the transmission path distance between the i+1-th branch road and the i-th branch road; is the average value of the transmission path distance between two adjacent branch roads on the main trunk of the combustible gas pipeline; is the spatial volume of the combustible gas pipeline distribution area; is the spatial distance of the three-dimensional model of the target location; Among them, the number of sensors deployed in the above formula is The value is rounded up, the base number of sensor deployment is a positive integer defined by the system user. Used to indicate the complexity of combustible gas pipelines. The smaller the value, the more complex the combustible gas pipeline is, and the more sensors are designed to be deployed. The larger the value, the less complex the combustible gas pipeline is, and the smaller the number of designed sensors to be deployed.

5. The gas detection-based industrial or commercial environment alarm control system according to claim 1, characterized in that: During the operation phase, the operating frequency of the sensor is as follows: System end users set the peak period of combustible gas usage based on the historical usage parameters of combustible gas; Set the initial operating frequency of the sensor, apply the initial operating frequency of the sensor to control the sensor operation, identify the time distance between the current operating timestamp of the sensor and the peak period of combustible gas usage, the closer the distance, the higher the sensor operating frequency, conversely, the lower the sensor operating frequency. When the real-time operating timestamp of the sensor reaches the peak period of combustible gas usage, the latest applied operating frequency is configured for the peak period of combustible gas usage; Among them, during the process of continuous change of the sensor operating frequency based on the above logic, the sensor operating frequency is always lower than the initial operating frequency of the sensor. The ratio of the sensor operating frequency change to time is customized by the system end user, and the system end user independently decides to modify the peak period of combustible gas use.

6. The gas detection-based industrial or commercial environment alarm control system according to claim 1, characterized in that: The sensor operation perception information received and traversed by the detection module and the evaluation module all comes from the management unit; The detection module detects whether there is a security threat in the target location and transmits the result to the alarm layer through the transmission module first. The alarm layer is triggered to run synchronously after receiving the detection result. The evaluation module evaluates the health status of the sensor and transmits it to the alarm layer through the transmission module. After receiving the evaluation result and completing the operation based on the detection result, the alarm layer is triggered again to generate a sensor message to be maintained. Among them, the alarm layer ends its operation when receiving a negative detection result.

7. The gas detection-based industrial or commercial environment alarm control system according to claim 1, characterized in that: The target of evaluating the sensor health status in the evaluation module is each deployed sensor. The sensor health status evaluation logic is expressed as: Select a sensor as the health status assessment target, denoted as Y; obtain all the sensing information belonging to the assessment target Y, that is, the combustible gas concentration and the sensing time of each sensing information; Sequentially traverse each group of sensor information in the sorted results to identify whether there are at least two consecutive zero sensor information in the sorted results. If the identification result is yes, use the two sensors adjacent to the evaluation target Y as auxiliary evaluation targets, denoted as X and Z, and obtain the sensor information of X and Z that has the same perception time as the identified sensor information; If all the acquired perception information is zero, the evaluation result of the evaluation target Y is healthy, otherwise, the evaluation result is unhealthy. Among them, there is at least one group of auxiliary evaluation targets. Based on the above logic, the health status of each sensor is evaluated.

8. The gas detection-based industrial or commercial environment alarm control system according to claim 1, characterized in that: The alarm layer includes an alarm module, a message module, and a visualization module. The alarm module is used to receive the results of the detection module and issue an alarm message when the monitoring result indicates that the target location currently has a security threat. The message module is used to receive the results of the evaluation module and use the sensors assessed as unhealthy in the evaluation results as picking targets. The corresponding sensor positions are picked in the three-dimensional model of the target location and a message is generated based on the picked sensor positions. The visualization module is used to receive the message and use the message to render the three-dimensional model of the target location. Among them, the alarm module is integrated with a buzzer, and the alarm information is the audio emitted by the buzzer. During the operation of the alarm module, all valves on the combustible gas pipelines in the target location are closed synchronously. The message content generated by the message module is the deployment location of all sensors with unhealthy evaluation results in the three-dimensional model of the target location.

9. The gas detection-based industrial or commercial environment alarm control system according to claim 8, characterized in that: The visualization module receives a message during its operation phase, traverses the locations contained in the message, constructs a closed area based on the adjacent and interconnected groups of locations in a top-down perspective of the three-dimensional model of the target location, further defines a risk impact range, uses the closed area as an expansion target, and uses the radius of the risk impact range as the expansion length to equidistantly expand the closed area. The expanded closed area is recorded as a risk area within the area defined in the three-dimensional model of the target location; The risk impact range is customized by the system user, and the risk area is rendered synchronously in the three-dimensional model of the target location to complete the display of the risk area in the three-dimensional model of the target location.

10. The gas detection-based industrial or commercial environment alarm control system according to claim 1, characterized in that: The detection module is interactively connected to the evaluation module and the transmission module through a wireless network. The detection module and the evaluation module are interactively connected to the management unit through a wireless network. The management unit is interactively connected to the interaction module through a wireless network. The interaction module is interactively connected to the construction module and the deployment module through a wireless network. The transmission module is interactively connected to the alarm module through a wireless network. The alarm module is interactively connected to the message module and the visualization module through a wireless network.

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