A point-type combustible gas detection system and method

Abstract

The present invention relates to the field of gas safety technology. Specifically, a point-type combustible gas detection system and method are disclosed, including at least one gas detection component and a gateway module. Each gas detection component is provided with a control module electrically connected thereto, and the gateway module is used to interact with data of a remote monitoring center; the control module includes a controller, a comparator and a communication unit, the controller is connected to the comparator and the communication unit respectively, the communication unit is communicatively connected to the gateway module, and the controller stores a preset threshold value set according to a gas safety concentration; the gas detection component also includes a gas sensor and a heating element, and the heating element is used to preheat the gas sensor; the gas detection component sensitively detects gas, and the wireless communication between the gateway module and at least one gas detection component enriches the remote transmission function of data and realizes centralized monitoring and management analysis, solves the limitation problem of detection data transmission, and effectively improves the safety level of the entire detection space.

Description

Technical Field

[0001] The present invention relates to the technical field of lasers, and in particular to a detection system and method for point-type combustible gas. Background Art

[0002] Point-type combustible gas detectors and gateways for industrial and commercial use are widely used in industrial fields such as petroleum, chemical and gas, as well as public places such as commercial complexes, hotels and hospitals. In these fields and places, combustible gas leakage may cause serious safety accidents. Therefore, it is very important to use combustible gas detectors and gateways for real-time monitoring, transmission and alarm. Existing industrial combustible gas detectors usually adopt the catalytic combustion principle. The acquisition module, communication module and endurance module are usually integrated in one device, and most of them use wired transmission, which has great limitations. In addition, traditional detectors usually only have a single gas detection function, and cannot realize simultaneous detection of multiple gases and data integration processing, and cannot meet the safety monitoring needs in complex environments. Summary of the invention

[0003] The main purpose of the present invention is to provide a point-type combustible gas detection system, aiming to solve the technical problems mentioned in the above background technology.

[0004] The present invention adopts the following technical solutions:

[0005] A point-type combustible gas detection system comprises: at least one gas detection component and a gateway module, each of the gas detection components is provided with a control module electrically connected thereto, and the gateway module is used for data interaction with a remote monitoring center;

[0006] The control module includes a controller, a comparator and a communication unit, the controller is connected to the comparator and the communication unit respectively, the communication unit is connected to the gateway module for communication, and the controller stores a preset threshold value set according to the gas safety concentration;

[0007] The gas detection assembly further comprises a gas sensor and a heating element, wherein the heating element is used to preheat the gas sensor;

[0008] During detection, each of the gas detection components detects the concentration value of the combustible gas in the corresponding area and converts it into a concentration signal. The comparator compares the concentration signal with the preset threshold value, and feeds back the comparison result to the controller, and sends the comparison result and the concentration value to the gateway module through the communication unit. The gateway module receives the data sent by all the control modules, integrates all the received data, and uploads it to the remote monitoring center for management and analysis.

[0009] Furthermore, the gateway module includes a processing unit and a storage unit, the processing unit is communicatively connected to the communication unit, the storage unit is connected to the processing unit, the processing unit is used to wirelessly network with the communication unit and to integrate and transmit data of the control module, and the storage unit is used to store the data integrated by the processing unit.

[0010] Furthermore, it also includes an alarm, which is connected to the controller. When the concentration signal of the gas detection component compared by the comparator exceeds a preset threshold, the controller outputs an alarm signal to trigger the alarm.

[0011] Furthermore, it also includes a power supply, which is electrically connected to the gateway module and is used to supply power to the gateway module.

[0012] Furthermore, it also includes a shell, an upper cover and a display screen, the shell and the upper cover are fixedly connected by fixing screws, the control module is arranged in a cavity after the shell and the upper cover are combined, the display screen is arranged on the top of the upper cover and the display screen is electrically connected to the control module, and a mounting hole is arranged on a side of the shell away from the upper cover, and the mounting hole is used to fix the shell in the use environment.

[0013] The present invention also provides a point-type combustible gas detection method, which is used to implement any one of the above-mentioned point-type combustible gas detection systems, and the point-type combustible gas detection method comprises:

[0014] The controller is configured with a preset threshold value for gas safety concentration, wherein the preset threshold value includes a multi-level response threshold value set according to environmental factors and combustible gas characteristics;

[0015] The controller sends a command to the heating element to preheat the gas sensor;

[0016] Configuring wireless communication parameters for the communication unit and the gateway module, wherein the communication unit searches for and identifies the nearby gateway module through wireless signals and establishes a wireless communication connection with the gateway module;

[0017] The gas sensor detects the combustible gas concentration of the environment in real time and converts it into a concentration signal, which is transmitted to the comparator for comparison with the preset threshold value, and the comparison result and concentration value are fed back to the controller;

[0018] The controller optimizes the comparison result and the concentration value and integrates them into a concentration data packet, and sends it to the gateway module through the communication unit;

[0019] The gateway module receives the concentration data packets transmitted by all the communication units, performs initial data fusion to extract valid data, and processes the valid data according to the urgency level according to the multi-level response thresholds;

[0020] The gateway module uploads the graded and processed valid data to the remote monitoring center in order of urgency, so that the remote monitoring center can conduct real-time monitoring and management, and generate a curve chart according to the concentration information and timestamp, and analyze the trend of the curve to predict the leakage risk.

[0021] Furthermore, the step of configuring the controller with a preset threshold value for gas safety concentration, wherein the preset threshold value includes a multi-level response threshold value set according to environmental factors and combustible gas characteristics, includes:

[0022] Calibrate the threshold of safe concentration for different environments and types of combustible gases to form a preset threshold database;

[0023] The preset thresholds in the preset threshold database are divided into multiple levels to form a multi-level response threshold, and the multi-level response threshold includes at least a first-level alarm threshold, a second-level alarm threshold and a third-level alarm threshold which increase in sequence.

[0024] Furthermore, the step of the communication unit searching and identifying the nearby gateway module through wireless signals and establishing a wireless communication connection with the gateway module includes:

[0025] The communication unit starts a wireless signal search function to scan wireless signals in the surrounding environment;

[0026] Among the scanned wireless signals, identify the signal matching the gateway module and obtain its identification information;

[0027] According to the identification information, the communication unit attempts to establish a connection with the gateway module and performs a handshake verification;

[0028] If the handshake verification is successful, a wireless communication connection with the gateway module is established;

[0029] The communication unit periodically sends a heartbeat packet to the gateway module to detect the connection status. When the connection status is abnormal, the communication unit immediately rescans the nearby gateway modules and reestablishes the connection.

[0030] Furthermore, the controller optimizes the comparison result and the concentration value and integrates them into a concentration data packet, including:

[0031] The controller pre-processes the received concentration signal;

[0032] Quantify the pre-processed concentration signal and convert it into a digital signal to be transmitted;

[0033] The digital signal to be transmitted is encapsulated according to the wireless communication parameters to form a formatted data packet and perform compression processing.

[0034] Furthermore, the step of performing initial data fusion to extract valid data and classifying the valid data according to the urgency level according to the multi-level response thresholds includes:

[0035] The gateway module decompresses and verifies all the received formatted data packets to verify the validity and integrity of the data;

[0036] Sort the valid data that has passed the verification by timestamp and remove abnormal data;

[0037] Perform data fusion processing on the sorted valid data to extract key information;

[0038] According to the key information, valid data at different response threshold levels are classified and stored, and marked with corresponding urgency levels;

[0039] According to the degree of urgency, data with high-level alarm thresholds are processed first, and the processed data is queued for upload in order of priority.

[0040] Beneficial effects:

[0041] In the present invention, the target gas can be sensitively detected through the gas detection component, and the wireless communication connection between the gateway module and the control module enriches the remote transmission and centralized management functions of the data, which can solve the problem of large limitations in the transmission of detection data in the prior art, effectively improve the adaptability of detection data transmission, and can be applied to different application scenarios to improve the transmission efficiency and reliability of detection data. At the same time, by connecting multiple gas detection components to a gateway module, the data of multiple gas detection components are integrated and transmitted to the remote monitoring center through the gateway module, thereby realizing centralized real-time monitoring and management analysis of the combustible gas concentration in various areas in the space, effectively improving the safe operation level of the application site. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a control module part of a point-type combustible gas detection system of the present invention;

[0043] Figure 2 It is a structural schematic diagram of a gateway module part of a point-type combustible gas detection system of the present invention;

[0044] Figure 3 It is a flow chart of a point-type combustible gas detection method according to an embodiment of the present invention.

[0045] Among them: 1. Gas sensor; 2. Gateway module; 3. Power supply; 4. Shell; 41. Mounting hole; 5. Top cover; 6. Fixing screws; 7. Display screen.

[0046] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] Reference Figure 1 and Figure 2The present invention proposes a point-type combustible gas detection system, comprising: at least one gas detection component and a gateway module 2, each of the gas detection components is provided with a control module electrically connected thereto, the gateway module 2 is used to interact with the remote monitoring center data; the control module comprises a controller, a comparator and a communication unit, the controller is connected to the comparator and the communication unit respectively, the communication unit is communicated with the gateway module 2, the controller stores a preset threshold value set according to the gas safety concentration; the gas detection component also comprises a gas sensor 1 and a heating element, the heating element is used to preheat the gas sensor 1; during detection, each of the gas detection components detects the concentration value of the combustible gas in the corresponding area and converts it into a concentration signal, the comparator compares the concentration signal with the preset threshold value, and feeds back the comparison result to the controller, and sends the comparison result and the concentration value to the gateway module 2 through the communication unit, the gateway module 2 receives the transmission data of all the control modules, integrates all the received transmission data, and uploads them to the remote monitoring center for management and analysis.

[0052] In the above embodiment, the control module is the core component of the detection device, which is electrically connected to the gas detection component and is responsible for coordinating and managing the work of the gas detection component and the gateway module 2. The control module can adopt a high-performance embedded system, so that it can have strong data processing capabilities and stable operating performance in the combustible gas detection device, and is responsible for receiving the combustible gas concentration information detected by the gas detection component and passing this information to the gateway module 2 for further processing. The preset threshold of the gas safety concentration is set according to the environment, which is an important basis for judging whether the environment is safe.

[0053] The comparator is composed of electronic components such as operational amplifiers, and specifically a differential amplifier can be used. The concentration signal output by the gas sensor 1 is compared with the preset threshold through the differential amplifier circuit, so that a fast response can be achieved, and it can be judged in real time whether the detected combustible gas concentration exceeds the safe range. It is responsible for comparing the combustible gas concentration information detected by the gas detection component with the preset threshold in real time. As mentioned above, the preset threshold is set according to the environmental safety standards and the requirements of specific application scenarios, and represents the safe upper limit of the combustible gas concentration. When the concentration detected by the gas detection component exceeds the preset threshold, it means that the combustible gas concentration in the environment is too high, and there is a safety hazard. The comparator can detect abnormal changes in the combustible gas concentration in time by receiving the concentration information transmitted by the gas detection component in real time. Once the concentration exceeds the threshold, the comparator will immediately send an alarm signal to the control module. The control module takes corresponding measures according to the received alarm signal, such as starting the alarm device, closing the gas valve, etc., to prevent the occurrence of safety accidents. The comparator enables the detection device to have the ability of autonomous judgment and rapid response, and can detect abnormal changes in the combustible gas concentration at the first time and take corresponding measures in time. At the same time, by setting the preset threshold, the comparator can also flexibly adjust the safety standards according to different application scenarios and environmental requirements, making the detection device more adaptable to the needs of practical applications. In summary, the comparator improves the accuracy and reliability of detection data, providing a strong guarantee for the safe operation of industrial and commercial places.

[0054] The communication unit is responsible for data transmission and communication connection between the control module and the gateway module 2. Through the communication unit, the control module can transmit the combustible gas concentration information detected by the gas detection component to the gateway module 2 for data integration and analysis. The existence of the communication unit makes the data transmission of the detection device more efficient and reliable, ensuring the accuracy and real-time performance of data processing. The setting of the communication unit not only improves the data transmission efficiency and reliability of the detection device, but also enables the detection device to indirectly connect and communicate with the remote monitoring center, improving the safe operation level of industrial and commercial places. In addition, the communication unit can also select suitable communication methods and protocols according to different application scenarios and environmental requirements, so that the detection device can better meet the needs of actual applications.

[0055] The gas detection component is a sensing component for detecting combustible gas. It is responsible for real-time detection of the concentration of combustible gas in the environment. It has high sensitivity and accuracy, can quickly respond to changes in combustible gas in the environment, and convert the concentration information into electrical signals, which are transmitted to the control module through electrical connections. The heating element provides necessary preliminary work for the gas sensor 1 before formal operation. The heating element preheats the gas sensor 1 to remove interfering gas molecules attached to the gas sensor 1 and provide stable detection results. The gas detection component can use an electrochemical sensor or a catalytic combustion sensor. Both electrochemical sensors and catalytic combustion sensors have the characteristics of high sensitivity, fast response and low power consumption, and can adapt well to the detection environment in industry and commerce.

[0056] The gateway module 2 is the data processing and transfer center of the detection device. It can receive the combustible gas concentration data transmitted by multiple control modules at the same time, and integrate and process multiple sets of data and transmit them to the remote monitoring center through the network. The processing unit is responsible for receiving, integrating and forwarding data, and the storage unit records all detection data for subsequent export and analysis. Through the joint action of the remote monitoring center, the trend of changes in combustible gas concentration can be quickly and accurately analyzed. Users can understand the gas concentration of each detection point in real time, discover safety hazards in time, and ensure the safe operation of industrial and commercial places.

[0057] Furthermore, the specific work flow is that the gas detection component continuously or intermittently detects the combustible gas concentration in the environment at predetermined intervals, and converts the concentration information into an electrical signal, which is transmitted to the control module through an electrical connection. After receiving the information, the control module performs preliminary processing and judgment. The control module transmits the collected information to the gateway module 2 by wireless communication. The gateway module 2 uses an algorithm to integrate and analyze the data. The gateway module 2 transmits the processed data to the remote monitoring center again through the communication connection. The remote monitoring center receives, stores, analyzes and displays the data through the cloud service platform, and can display the data intuitively. It can also send SMS / emails to the bound personnel to prompt relevant information for further management and analysis.

[0058] In summary, the point-type combustible gas detection system of the present invention can solve the problem of large limitations in the transmission of detection data in the prior art, effectively improve the adaptability of detection data transmission, can be applied to different application scenarios, and improve the transmission efficiency and reliability of detection data. At the same time, the data is integrated and transmitted through the gateway module 2, realizing real-time monitoring and management analysis of the combustible gas concentration by the remote monitoring center, effectively improving the safe operation level of industrial and commercial places.

[0059] In one embodiment, the gateway module 2 includes a processing unit and a storage unit, the processing unit is communicatively connected to the communication unit, the storage unit is connected to the processing unit, the processing unit is used to wirelessly network with the communication unit and to integrate and transmit data of the control module, and the storage unit is used to store the data integrated by the processing unit.

[0060] In the above embodiment, the gateway module 2 is responsible for receiving, processing and transmitting data from the control module. Among them, the processing unit is the core part of the gateway module 2, which has certain computing power and data processing capabilities, and can realize real-time processing and analysis of the combustible gas concentration information detected by the gas detection component, and the auxiliary control module can respond to the alarm function more quickly. The processing unit can be wirelessly networked with the communication units in multiple control modules, and after data transmission, the integrated data will be further transmitted to the remote monitoring center for further data analysis and processing. This wireless networking method not only improves the efficiency and reliability of data transmission, but also reduces the cost and difficulty of wiring and maintenance, and effectively solves the limitations of the detection device usage scenario. Further, when processing a large amount of data, the processing unit can use technologies such as multi-core processors or distributed computing to improve the speed and efficiency of data processing. When processing specific types of data, a special algorithm or model can be used to improve the accuracy and precision of data processing. The storage unit is used to save the integrated data for subsequent data analysis and processing. The storage unit can use a variety of storage media, such as hard disk, flash memory, SD card, etc., which can be selected according to actual needs. At the same time, the design of the storage unit also needs to consider the security, reliability and stability of data storage to avoid adverse consequences caused by data loss or damage. In the specific implementation, the storage unit can adopt a variety of data backup and recovery schemes, such as regular backup, automatic recovery, etc., to improve the reliability and stability of data storage. Through the setting of the storage unit, the detection device can achieve long-term preservation and traceability of detection data, providing strong support for subsequent data analysis and processing. At the same time, the storage unit can also be set to save the configuration information, system logs, etc. of the detection device, which is convenient for subsequent maintenance and management. In summary, the setting of the storage unit enables the detection device to have more powerful data storage and processing capabilities, and improves the practicality and reliability of the detection device.

[0061] In one embodiment, an alarm is further included, and the alarm is connected to the controller. When the concentration signal of the gas detection component compared by the comparator exceeds a preset threshold, the controller outputs an alarm signal to trigger the alarm.

[0062] In the above embodiment, the alarm is electrically connected to the controller. When the combustible gas concentration detected by the detection device exceeds the preset threshold, the controller will immediately output an alarm signal, triggering the alarm to emit an alarm sound or light signal to remind the surrounding personnel to pay attention to the abnormal changes in the combustible gas concentration and take timely countermeasures. At the same time, the alarm can also be used as a backup alarm means. When other alarm methods fail or fail, the alarm can still be used to sound an alarm to ensure that safety information is conveyed in a timely manner. The alarm can consider using high-brightness LED lights and high-decibel buzzers to ensure that the alarm can be effectively sounded in complex environments. Furthermore, the triggering method of the alarm can also be flexibly set. For example, different alarm levels can be set to correspond to different combustible gas concentration thresholds so that on-site personnel can take corresponding countermeasures according to the alarm level. In addition, the alarm can also be set to be linked with a remote monitoring center. When the alarm is triggered, it can automatically send an alarm message to the remote monitoring center so that management personnel can obtain the safety status of the site in a timely manner and take corresponding treatment measures.

[0063] In one embodiment, a power supply 3 is further included, and the power supply 3 is electrically connected to the gateway module 2 .

[0064] In the above embodiment, the power supply 3 is necessary for the normal operation of the detection device, and provides a stable working voltage and current for the gateway module 2. The design of the power supply 3 needs to consider the actual application scenarios and environmental requirements of the detection device, such as working voltage, current, power consumption, etc., to ensure the stability of the detection device and its safe operation in the environment. The power supply 3 can also be further provided with protection functions such as overcurrent, overvoltage, and undervoltage to avoid damage to the detection device or safety accidents caused by problems existing in the power supply 3 itself. In a specific implementation, the power supply 3 can be in a variety of forms, such as AC power supply 3, DC power supply 3, battery, etc., and is selected according to actual needs. For example, in industrial and commercial places where continuous power supply is required, AC power supply 3 or DC power supply 3 can be used; in scenarios where portability or mobility is required, battery power can be used. In addition, the design of the power supply 3 also needs to consider the requirements of energy saving and environmental protection, and give priority to high-efficiency and low-energy power supply 3 solutions to reduce the energy consumption and operating costs of the detection device.

[0065] In one embodiment, it further includes a housing 4 and an upper cover 5, the housing 4 and the upper cover 5 are fixedly connected by fixing screws 6, and the control module is disposed in the cavity after the housing 4 and the upper cover 5 are combined. It further includes a display screen 7, the display screen 7 is disposed on the top of the upper cover 5 and the display screen 7 is electrically connected to the control module. A mounting hole 41 is disposed on one side of the housing 4 away from the upper cover 5, and the mounting hole 41 is used to fix the housing 4 in the use environment.

[0066] In the above embodiment, the shell 4 and the upper cover 5 are the physical structural parts of the detection device, which are fixedly connected by the fixing screws 6 to form a closed cavity for accommodating other components such as the control module and for the gas detection component to pass through, which can effectively protect the internal components from interference and damage from the external environment, and improve the stability and reliability of the detection device. At the same time, the design of the shell 4 and the upper cover 5 also takes into account the convenience of installation and maintenance. The simple fixing screws 6 are used to fix the connection, which facilitates the replacement and maintenance of the internal components. Unscrewing the fixing screws 6 allows the internal structure to be directly seen and the networking operation before use can be performed. In addition, the shell 4 and the upper cover 5 can also be customized according to actual needs, such as selecting different materials, colors, sizes, etc., to adapt to different application scenarios and environmental requirements. Preferably, the shell 4 and the upper cover 5 are made of fireproof and explosion-proof materials, which can adapt to various harsh industrial environments. In summary, the shell 4 and the upper cover 5 make the detection device easier to install and maintain, reducing the cost of use and the difficulty of maintenance. The display screen 7 is arranged on the top of the upper cover 5, which can be viewed intuitively by the operator. It is electrically connected to the control module and can display the working status, combustible gas concentration, warning code and other information of the detection device in real time, so that the user can intuitively understand the working status and environmental safety status of the detection device, and enhance the practicality and ease of use of the detection device. At the same time, the setting of the display screen 7 also improves the intelligence level of the detection device, so that the user can interact with the detection device more conveniently, and improves the user's experience. The display content of the display screen 7 can also be customized as needed, which may include, for example, combustible gas concentration, temperature, humidity, alarm status, etc. In addition, the brightness, color and other parameters of the display screen 7 can also be adjusted to adapt to different environments and usage scenarios. This makes the detection device more flexible and adaptable in practical applications. The setting of the display screen 7 enables the detection device to have a more intuitive and intelligent display function, and also enhances the practicality and ease of use of the detection device. A mounting hole 41 is provided on the side of the housing 4 away from the upper cover 5, which is to facilitate the detection device to be fixed on the wall or other fixed objects of various industrial and commercial places to ensure the stability and operation reliability of the detection device. The design of the mounting hole 41 takes into account a variety of fixing methods, such as screw fixing, wall mounting, etc., to adapt to different usage scenarios and environmental requirements. At the same time, the position and number of the mounting holes 41 can also be further optimized as needed to ensure that the detection device is installed firmly and stably to avoid the detection device from falling off or being damaged due to factors such as vibration or external force. In addition, the design of the mounting hole 41 also takes into account aesthetics and practicality, so that the detection device can be coordinated with the surrounding environment after installation, thereby improving the overall aesthetics.

[0067] In another example, the control module further includes a calibration unit electrically connected to the gas detection component for detecting and calibrating the precision and accuracy of the gas detection component.

[0068] The intelligent calibration function of the calibration unit relies on advanced algorithms and sensor technology, which can detect the working status and performance of the gas detection components and the control module itself in real time, and automatically correct possible data deviations or errors. It greatly reduces the need for manual intervention and improves the automation and intelligence level of the detection device. Specifically, the intelligent calibration function can automatically detect when the detection device is started or running, and check and adjust the various performance indicators of the detection device one by one according to the preset calibration parameters and algorithms. When data deviations or errors are found, the intelligent calibration function will automatically trigger the calibration procedure to correct the detection device to ensure the accuracy and reliability of the detection data. In addition, the intelligent calibration function can also perform calibration operations regularly according to changes in the environment and the increase in usage time to maintain the long-term stability and reliability of the detection device. This regular calibration function can effectively avoid performance degradation caused by environmental factors or equipment aging, and extend the service life of the detection device.

[0069] In another example, a waterproof protection structure is further included, which is installed on the outside of the interface between the housing 4 and the upper cover 5. The waterproof protection structure is used to protect the detection device from moisture and humid environment, thereby improving its stability and reliability.

[0070] In the above embodiments, the detection device is often deployed outdoors or in places with high humidity, such as underground wells, pools, etc. in actual applications. The humidity of the environment may cause damage or short circuit of the electronic components inside the detection device, thereby affecting its normal operation. The waterproof protection structure can be made of a variety of materials and technologies, such as waterproof coatings, waterproof shell edging, etc., with good waterproof performance, which can effectively prevent water and moisture from entering the inside of the detection device. At the same time, the waterproof protection structure also needs to take into account its durability and ease of maintenance to ensure that the detection device can still maintain a good waterproof effect during long-term use, and at the same time facilitate the opening of the upper cover 5 for networking. In a specific implementation, the waterproof protection structure can be integrated with the housing 4 and the upper cover 5 of the detection device, or covered and installed as a separate accessory. Its shape and size are customized according to the actual size and needs of the detection device. In addition, the waterproof protection structure can also be equipped with components such as drain holes and sealing pads to further improve its waterproof effect. With the waterproof protection structure, the detection device can better adapt to various harsh environments and reduce the failure and maintenance costs caused by environmental factors.

[0071] refer to Figure 3 A point-type combustible gas detection method is used to implement any one of the above-mentioned point-type combustible gas detection systems, and the point-type combustible gas detection method includes:

[0072] S1: Configuring a preset threshold value of gas safety concentration for the controller, wherein the preset threshold value includes a multi-level response threshold value set according to environmental factors and combustible gas characteristics;

[0073] S2: the controller sends a command to the heating element to preheat the gas sensor 1;

[0074] S3: configuring wireless communication parameters for the communication unit and the gateway module 2, the communication unit searches and identifies the nearby gateway module 2 through wireless signals, and establishes a wireless communication connection with the gateway module 2;

[0075] S4: The gas sensor 1 detects the combustible gas concentration of the environment in real time and converts it into a concentration signal, which is transmitted to the comparator for comparison with the preset threshold value, and the comparison result and the concentration value are fed back to the controller;

[0076] S5: the controller optimizes the comparison result and the concentration value and integrates them into a concentration data packet, and sends it to the gateway module 2 through the communication unit;

[0077] S6: the gateway module 2 receives the concentration data packets transmitted by all the communication units, performs initial data fusion to extract valid data, and processes the valid data according to the urgency level according to the multi-level response thresholds;

[0078] S7: The gateway module 2 uploads the graded and processed valid data to the remote monitoring center in order according to the degree of urgency, so that the remote monitoring center can perform real-time monitoring and management, and generates a curve chart according to the concentration information and timestamp, and analyzes the trend of the curve to predict the leakage risk.

[0079] As described in the above steps S1-S7, configuring the controller with a preset threshold for gas safety concentration is a key link. As the core of the detection system, the controller can use a microcontroller or a single-chip microcomputer to manage and coordinate the operation of the entire system. When configuring the preset threshold for gas safety concentration, we need to set it according to the specific environment and the characteristics of the combustible gas. These thresholds can be divided into multi-level response thresholds so that corresponding response measures can be taken at different concentration levels. By reasonably configuring the thresholds, it can be ensured that the detection system can respond accurately and promptly when encountering a combustible gas leak to ensure the safety of personnel and property.

[0080] The controller sends instructions to the heating element to preheat the gas sensor 1. The sensor is preheated by the heating element to remove interfering gas molecules attached to the gas sensor 1, eliminate possible cold start errors, and improve the sensitivity and stability of the sensor. In the subsequent detection process, the sensor will be able to more accurately sense changes in the combustible gas concentration in the environment.

[0081] The communication unit and the gateway module 2 need to configure wireless communication parameters in order to establish a stable wireless communication connection. Setting the wireless communication parameters between the communication unit and the gateway module 2 is the prerequisite for ensuring that both the control module and the gateway module 2 can perform wireless signal transmission and data exchange. Select a transmission protocol that can meet the requirements of data transmission rate, transmission distance, etc., and set the corresponding wireless communication parameters, including communication frequency band, data bit, and check bit, so that the communication unit and the gateway module 2 can recognize each other and establish a stable wireless communication connection. Through wireless signal search and identification of nearby gateway modules 2, the communication unit can establish a reliable data transmission channel with the gateway module 2.

[0082] The gas sensor 1 detects the combustible gas concentration in the environment in real time, and transmits the detected concentration signal to the comparator for comparison with the preset threshold. By comparing the actual concentration with the preset threshold, the comparison result and concentration value are fed back to the controller.

[0083] The controller can optimize the comparison results and concentration values ​​and send them to the gateway module 2 through the communication unit. The data optimization processing may include data compression, denoising and other operations to improve the efficiency of data transmission and reduce network load. Sending data to the gateway module 2 through the communication unit can realize centralized processing and forwarding of data, which facilitates subsequent data analysis and processing.

[0084] Gateway module 2 receives the concentration data packets transmitted by all communication units, and performs initial data fusion and extracts valid data. Data fusion can help us better understand and analyze the distribution of combustible gases in the environment, while extracting valid data can remove redundant and erroneous information and improve the quality of data. At the same time, gateway module 2 processes valid data in different levels according to the urgency of the multi-level response threshold, so that when a leak occurs, it can be sorted in order according to different urgency levels, so that timely measures can be taken for different emergency situations for subsequent upload.

[0085] The gateway module 2 uploads the graded processed data to the remote monitoring center in sequence according to the degree of urgency. The remote monitoring center can monitor and manage the received data in real time, and promptly detect and handle combustible gas leakage incidents. At the same time, the remote monitoring center generates a gas concentration-timestamp curve according to the concentration information and timestamp according to the equipment number. The curve can first intuitively reflect the concentration change trend. By analyzing the trend and fluctuation characteristics of the curve, for example, an instantaneous rise and then a decrease may be due to the influence of the gas source pressure, which is an unsafe gas leakage. A continuous rise exceeding a certain value without a decrease can be confirmed as a leakage that endangers safety, and timely measures need to be taken. The location of the leaking gas source can be further analyzed according to the equipment number to make a judgment on the implementation of safety measures.

[0086] In one embodiment, the step of configuring the controller with a preset threshold value for gas safety concentration, wherein the preset threshold value includes a multi-level response threshold value set according to environmental factors and combustible gas characteristics, comprises:

[0087] S11: Calibrate the threshold values ​​of safe concentration for different environments and combustible gas types to form a preset threshold database;

[0088] S12: dividing the preset thresholds in the preset threshold database into multiple levels to form a multi-level response threshold, wherein the multi-level response threshold includes at least a first-level alarm threshold, a second-level alarm threshold and a third-level alarm threshold that increase in sequence;

[0089] In the above embodiment, the first-level alarm threshold is the combustible gas concentration reaching a level that requires attention, the second-level alarm threshold is the combustible gas concentration reaching a level that requires measures to be taken, and the third-level alarm threshold is the combustible gas concentration reaching a dangerous level that requires immediate emergency treatment.

[0090] In S11, by calibrating the safety concentration thresholds for different environments and types of combustible gases, a preset threshold database is formed, providing an important reference basis for subsequent monitoring and alarming.

[0091] After dividing the preset threshold into multi-level response thresholds, not only can corresponding safety measures be formulated according to different levels of alarm thresholds, but the alarm thresholds can also be flexibly adjusted according to different situations, thereby improving the adaptability and accuracy of the system.

[0092] In one embodiment, the communication unit searches and identifies the nearby gateway module 2 through wireless signals, and the step of establishing a wireless communication connection with the gateway module 2 includes:

[0093] S31: the communication unit starts a wireless signal search function to scan wireless signals in the surrounding environment;

[0094] S32: Identify the signal matching the gateway module 2 among the scanned wireless signals, and obtain its identification information;

[0095] S33: According to the acquired identification information, the communication unit attempts to establish a connection with the gateway module 2 and performs a handshake verification;

[0096] S34: If the handshake verification is successful, a wireless communication connection with the gateway module 2 is established;

[0097] S35: The communication unit periodically sends a heartbeat packet to the gateway module 2 to detect the connection status. When the connection status is abnormal, the communication unit immediately rescans the nearby gateway modules 2 and reestablishes the connection.

[0098] In the above embodiment, the communication unit starts the wireless signal search function and scans the wireless signals in the surrounding environment. The communication unit identifies the signal that matches the gateway module 2 in the scanned wireless signals and obtains its identification information to ensure that a connection is established with the correct gateway module 2. The communication unit attempts to establish a connection with the gateway module 2 and performs a handshake verification to confirm the identities and authorities of both parties. After the handshake verification is successful, the wireless communication connection between the communication unit and the gateway module 2 is established.

[0099] In order to maintain the connection status to ensure real-time data transmission and detect the reliability of communication, the communication unit periodically sends heartbeat packets to gateway module 2 to ensure the effectiveness of maintaining the connection status. The heartbeat packet is a special signal. If the communication unit does not receive a response from gateway module 2 after sending the heartbeat packet, or detects that the connection status is abnormal, such as signal interruption, connection timeout, etc., that is, when the connection status is abnormal, the communication unit will immediately rescan the nearby gateway module 2 and try to re-establish the connection, thereby ensuring the continuity and reliability of data transmission.

[0100] In one embodiment, the controller optimizes the comparison result and the concentration value and integrates them into a concentration data packet, comprising:

[0101] S51: the controller pre-processes the received concentration signal;

[0102] S52: quantizing the preprocessed concentration signal and converting it into a digital signal to be transmitted;

[0103] S53: Encapsulating the digital signal to be transmitted according to the wireless communication parameters to form a formatted data packet and performing compression processing.

[0104] In the above embodiment, the controller first preprocesses the received concentration signal to eliminate noise and interference in the signal and improve the quality and reliability of the signal. The preprocessing includes filtering, smoothing and other processing methods to ensure the accuracy and stability of the concentration signal.

[0105] After completing the preprocessing, the controller quantizes the concentration signal. Quantization is the process of converting the continuously changing concentration signal into a discrete digital signal for digital transmission and processing.

[0106] The controller encapsulates the digital signal to be transmitted according to the communication parameters. The process of encapsulating data may include adding data headers, checksums and other information to ensure the integrity of the data during transmission. In order to further improve the efficiency of data transmission and save communication resources, the controller compresses the encapsulated data packets.

[0107] In one embodiment, the step of performing initial data fusion to extract valid data and classifying the valid data according to the urgency level according to the multi-level response thresholds includes:

[0108] S61: the gateway module 2 decompresses and verifies all the received formatted data packets to verify the validity and integrity of the data;

[0109] S62: Sort the valid data that have passed the verification according to the timestamp and remove the abnormal data;

[0110] S63: Perform data fusion processing on the sorted valid data to extract key information;

[0111] S64: Classify and store valid data at different response threshold levels according to the key information, and mark corresponding urgency levels;

[0112] S65: Based on the degree of urgency, data with high-level alarm thresholds are processed first, and the processed data are queued for upload in order of priority.

[0113] In the above embodiment, the gateway module 2 first decompresses and verifies all formatted data packets received to ensure the integrity and accuracy of the data, specifically, it is a process of restoring the compressed data packets to the original data, and the verification is performed by calculating the checksum of the data to verify whether the data has been tampered with or damaged during the transmission process, after completing the decompression and verification.

[0114] Gateway module 2 sorts the verified valid data according to timestamps. The timestamps can reflect the order in which the data is generated or collected. The sorted data is more conducive to data fusion and analysis. During the sorting process, gateway module 2 will also eliminate duplicate or abnormal data to avoid data redundancy and errors.

[0115] Gateway module 2 performs data fusion processing on the sorted valid data. Data fusion is the process of integrating and integrating information from multiple data sources. Through data fusion, key information can be extracted, such as the maximum, minimum, and average values ​​of concentration values, to preliminarily reflect the changing trends and characteristics of the environmental status.

[0116] Based on the extracted key information, the gateway module 2 classifies and stores the valid data at different response threshold levels, and marks the corresponding urgency, so as to respond to different levels of data with different processing priorities and alarm mechanisms.

[0117] Gateway module 2 then prioritizes processing of data with high-level alarm thresholds based on the degree of urgency, queues the processed data for upload in order of priority, and uploads them to the remote monitoring center in the order of queue. Thus, it can prioritize the timeliness and accuracy of emergency data, and ensure the response speed and effectiveness of the entire monitoring system.

[0118] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A point-type combustible gas detection method, characterized in that: Applicable to a point-type combustible gas detection system, the point-type combustible gas detection system comprising: At least one gas detection component and a gateway module, each of the gas detection components is provided with a control module electrically connected thereto, and the gateway module is used for data interaction with a remote monitoring center; The control module includes a controller, a comparator and a communication unit, the controller is connected to the comparator and the communication unit respectively, the communication unit is connected to the gateway module for communication, and the controller stores a preset threshold value set according to the gas safety concentration; The gas detection assembly further comprises a gas sensor and a heating element, wherein the heating element is used to preheat the gas sensor; During detection, each of the gas detection components detects the concentration value of the combustible gas in the corresponding area and converts it into a concentration signal. The comparator compares the concentration signal with the preset threshold value, and feeds back the comparison result to the controller, and sends the comparison result and the concentration value to the gateway module through the communication unit. The gateway module receives the data sent by all the control modules and integrates all the received data and uploads it to the remote monitoring center for management and analysis. The gateway module includes a processing unit and a storage unit, wherein the processing unit is communicatively connected to the communication unit, and the storage unit is connected to the processing unit, the processing unit is used to wirelessly network with the communication unit and to integrate and transmit the data of the control module, and the storage unit is used to store the data integrated by the processing unit; The point-type combustible gas detection method comprises: The controller is configured with a preset threshold value for gas safety concentration, wherein the preset threshold value includes a multi-level response threshold value set according to environmental factors and combustible gas characteristics; The controller sends a command to the heating element to preheat the gas sensor; Configuring wireless communication parameters for the communication unit and the gateway module, wherein the communication unit searches for and identifies the nearby gateway module through wireless signals and establishes a wireless communication connection with the gateway module; The gas sensor detects the combustible gas concentration of the environment in real time and converts it into a concentration signal, which is transmitted to the comparator for comparison with the preset threshold value, and the comparison result and concentration value are fed back to the controller; The controller optimizes the comparison result and the concentration value and integrates them into a concentration data packet, and sends it to the gateway module through the communication unit; The gateway module receives the concentration data packets transmitted by all the communication units, performs initial data fusion to extract valid data, and processes the valid data according to the urgency level according to the multi-level response thresholds; The gateway module uploads the graded and processed valid data to the remote monitoring center in order according to the degree of urgency, so that the remote monitoring center can perform real-time monitoring and management, and generates a curve chart according to the concentration information and timestamp, and analyzes the trend of the curve to predict the leakage risk; The step of configuring the controller with a preset threshold value for gas safety concentration, wherein the preset threshold value includes a multi-level response threshold value set according to environmental factors and combustible gas characteristics, comprises: Calibrate the threshold of safe concentration for different environments and types of combustible gases to form a preset threshold database; The preset thresholds in the preset threshold database are divided into multiple levels to form a multi-level response threshold, and the multi-level response threshold includes at least a first-level alarm threshold, a second-level alarm threshold and a third-level alarm threshold which increase in sequence.

2. A point-type combustible gas detection method according to claim 1, characterized in that: It also includes an alarm, which is connected to the controller. When the concentration signal of the gas detection component compared by the comparator exceeds a preset threshold, the controller outputs an alarm signal to trigger the alarm.

3. A point-type combustible gas detection method according to claim 1, characterized in that: It also includes a power supply, which is electrically connected to the gateway module and is used to supply power to the gateway module.

4. A point-type combustible gas detection method according to claim 1, characterized in that: It also includes a shell, an upper cover and a display screen, wherein the shell and the upper cover are fixedly connected by fixing screws, the control module is arranged in a cavity formed by combining the shell and the upper cover, the display screen is arranged on the top of the upper cover and the display screen is electrically connected to the control module, and a mounting hole is arranged on a side of the shell away from the upper cover, and the mounting hole is used to fix the shell in the use environment.

5. A point-type combustible gas detection method according to claim 1, characterized in that: The step of the communication unit searching and identifying the nearby gateway module through wireless signals and establishing a wireless communication connection with the gateway module includes: The communication unit starts a wireless signal search function to scan wireless signals in the surrounding environment; Among the scanned wireless signals, identify the signal matching the gateway module and obtain its identification information; According to the identification information, the communication unit attempts to establish a connection with the gateway module and performs a handshake verification; If the handshake verification is successful, a wireless communication connection with the gateway module is established; The communication unit periodically sends a heartbeat packet to the gateway module to detect the connection status. When the connection status is abnormal, the communication unit immediately rescans the nearby gateway modules and reestablishes the connection.

6. A point-type combustible gas detection method according to claim 5, characterized in that: The controller optimizes the comparison result and the concentration value and integrates them into a concentration data packet, including: The controller pre-processes the received concentration signal; Quantify the pre-processed concentration signal and convert it into a digital signal to be transmitted; The digital signal to be transmitted is encapsulated according to the wireless communication parameters to form a formatted data packet and perform compression processing.

7. A point-type combustible gas detection method according to claim 6, characterized in that: The steps of performing initial data fusion to extract valid data and classifying the valid data according to the urgency of the valid data according to the multi-level response thresholds include: The gateway module decompresses and verifies all the received formatted data packets to verify the validity and integrity of the data; Sort the valid data that has passed the verification by timestamp and remove abnormal data; Perform data fusion processing on the sorted valid data to extract key information; According to the key information, valid data at different response threshold levels are classified and stored, and marked with corresponding urgency levels; According to the degree of urgency, data with high-level alarm thresholds are processed first, and the processed data is queued for upload in order of priority.

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