Gas monitoring and early warning system

Abstract

The invention relates to the technical field of gas detection, in particular to a gas monitoring and early warning system, which is characterized in that an electronic nose detection device is used for carrying out gas identification, generating a fingerprint spectrum with environmental gas component concentration information, and sending the fingerprint spectrum through a LoRa data transmission terminal; the edge computing device receives the fingerprint spectrum through the LoRa wireless base station and analyzes the fingerprint spectrum to obtain the type and concentration of the gas; the data set display center is connected with the edge computing equipment, records gas data in real time, and predicts the occurrence time of the generated concentration limit value; and the intelligent alarm device performs early warning and alarming according to the occurrence time of the concentration limit value. It can be understood that according to the technical scheme, the electronic nose is combined with edge computing equipment for analysis, in an area with unstable signals, the effectiveness of data transmission can be ensured, the timeliness of a rear end to data can be ensured, the accumulation situation of harmful gas in the environment can be rapidly responded, and prediction and alarm of the accumulation situation of gas concentration can be made; and the safety of production work of sailors is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection, and in particular to a gas monitoring and early warning system. Background Art

[0002] Fishing boats are essential means of transportation in fishery production. The catch is prone to rot and deterioration in fishing boats, which may lead to the generation of harmful gases such as hydrogen sulfide on fishing boats. Therefore, gas detection is very necessary on fishing boats.

[0003] The traditional manual detection method is for monitoring personnel to use handheld detection instruments to detect toxic gases in the workplace. This method results in a long time interval for collecting relevant data and a small amount of detection data. Manual detection is limited by the technical level of the detection personnel, and the data is somewhat discrete. It cannot reflect the real-time situation of each key point in the environment in real time, nor can it respond quickly to the detection data of emergencies.

[0004] Most of the existing hydrogen sulfide monitoring systems for fishing boat cabins are equipped with a main control display device and at least one detection device. After the detection device identifies that the concentration of hydrogen chloride gas exceeds the critical limit, it will alarm the cabin through an acoustic and electrical alarm. This device has a complex structure and occupies a large space. The data must be transmitted under wired environmental conditions to ensure reliability, which affects the installation of detection equipment and display screens and occupies space for loading fish. And it can only monitor a single gas. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a gas monitoring and early warning system to solve the problems in the prior art that the detection system occupies a large space, has insufficient wireless transmission reliability, and monitors a single gas.

[0006] According to a first aspect of an embodiment of the present invention, a gas monitoring and early warning system is provided, comprising:

[0007] Electronic nose detection equipment, edge computing equipment, data display center and intelligent alarm device;

[0008] The electronic nose detection device is used to identify the gas in the environment, generate a fingerprint with the concentration information of the environmental gas components, and send the fingerprint through the LoRa data transmission terminal;

[0009] The edge computing device receives the fingerprint spectrum through the LoRa wireless base station, analyzes the fingerprint spectrum, and obtains the gas type and the corresponding gas concentration;

[0010] The data display center is connected to the edge computing device to record the gas type and the corresponding gas concentration in real time, and predict the occurrence time of the generated concentration limit value based on the recorded data;

[0011] The intelligent alarm device issues early warning and alarm according to the occurrence time of the concentration limit value.

[0012] Preferably, the edge computing device is also used to determine whether the fingerprint spectrum is abnormal, and if so, send a repeat measurement instruction to the corresponding electronic nose detection device through the LoRa wireless base station;

[0013] When the electronic nose detection device receives the repeated measurement instruction through the LoRa data transmission terminal, the electronic nose detection device performs secondary identification of the gas in the environment according to the repeated measurement instruction.

[0014] Preferably, the electronic nose detection device further comprises:

[0015] Electronic nose components: gas sensors and data temporary storage modules;

[0016] The electronic nose detection device utilizes the electronic nose element gas sensor to absorb ambient gas for identification at preset intervals, generates a fingerprint map with ambient gas component concentration information, and temporarily stores the fingerprint map through a temporary storage module.

[0017] Preferably, the edge computing device comprises:

[0018] LoRa wireless base station and edge computing module;

[0019] The LoRa wireless base station is used to receive and analyze the fingerprint map, and send the fingerprint map to the edge computing module;

[0020] The edge computing module is used to analyze the fingerprint spectrum using an independent data processing model to obtain the gas type and the corresponding gas concentration.

[0021] Preferably, the data display center is also used to analyze the gas types and corresponding gas concentrations recorded in real time using data analysis and drawing software, and predict and draw a gas concentration change curve.

[0022] Preferably, the intelligent alarm device is also used to issue an early warning and an alarm according to the occurrence time of the concentration limit value, including:

[0023] Determine whether the concentration reaches the warning limit corresponding to the concentration limit according to the occurrence time of the concentration limit, and if so, execute the first emergency response mode;

[0024] Whether the concentration reaches the concentration limit is determined according to the time when the concentration limit occurs. If so, the second emergency response mode is executed.

[0025] Preferably, the edge computing device is also used to pre-process the fingerprint map when receiving the fingerprint map.

[0026] Preferably, the electronic nose element gas sensor is an electrochemical sensor.

[0027] Preferably, the electronic nose detection device further comprises:

[0028] An independent power storage module is used to supply power to the electronic nose detection device.

[0029] The technical solution provided by the embodiments of the present invention may have the following beneficial effects:

[0030] It is understandable that the technical solution shown in the present invention uses electronic nose detection equipment to identify gases, generate fingerprints with information on the concentration of environmental gas components, and send them through the LoRa data transmission terminal; the edge computing device receives the fingerprint through the LoRa wireless base station, analyzes it, and obtains the gas type and concentration; the data display center is connected to the edge computing device, records gas data in real time, and predicts the time of occurrence of the generated concentration limit; the intelligent alarm device issues early warnings and alarms based on the time of occurrence of the concentration limit. It is understandable that this technical solution can ensure the effectiveness of data transmission and the timeliness of data on the back end in areas where the signal is unstable through the electronic nose combined with edge computing equipment analysis, and can quickly respond to the accumulation of harmful gases in the environment, make predictions and alarms on the accumulation of gas concentrations, and ensure the safety of crew production work.

[0031] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0033] Figure 1 is a schematic block diagram of a gas monitoring and early warning system according to an exemplary embodiment;

[0034] Figure 2 The figure is a schematic flowchart of data transmission according to an exemplary embodiment. DETAILED DESCRIPTION

[0035] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0036] Fishing boats are essential means of transportation in fishery production, and a large amount of fish catches must be transported back to the port by fishing boats. The larger the fishing boat, the greater its carrying capacity, and the longer the fishing and transportation time at sea. This leads to a longer accumulation time of fish catches in fishing boats, and the catches are prone to rot and deterioration in fishing boats, which may lead to the generation of harmful gases such as hydrogen sulfide on fishing boats. Rotting catches will release harmful gases such as hydrogen sulfide. Long-term exposure of crew members to this environment will cause damage to the respiratory system, nervous system, etc., causing symptoms such as coughing, difficulty breathing, dizziness, and nausea. Some crew members have developed chronic respiratory diseases due to long-term work in cabins filled with the smell of rotten catches.

[0037] An electronic nose is an instrument or device that simulates the biological olfactory system. It consists of a set of sensor arrays and corresponding pattern recognition algorithms, and can detect, analyze and identify complex odors. It has the advantages of safety, efficiency and high sensitivity in the analysis of hazardous gases. As a separate detection device, the electronic nose device is separated from the data analysis system, which can reduce the size of the detection system. It has the characteristics of small size, portability and mobility, which is convenient for environmental gas detection in various scenarios and reduces the space occupied by fishing vessels.

[0038] The current detection equipment generally has the following problems: Problem 1: The device structure is complex and occupies a large space. Data reliability can only be ensured by transmitting in a wired environment, which affects the installation of detection equipment and display screens and occupies space for loading fish. Problem 2: In manual on-site detection, the alarm is set to sound an alarm after exceeding the hazard limit. When the concentration of hazardous gases approaches the critical hazard limit, there is a lack of early warning of possible hazardous scenarios that may occur. Before the early warning, if there are crew members working, it may cause potential harm to the health of the crew. Problem 3: Only single gas concentration monitoring of hydrogen sulfide gas can be carried out, and there is a lack of monitoring of other hazardous gases such as ammonia, carbon monoxide, carbon dioxide and other hazardous gases.

[0039] In summary, the present invention combines an electronic nose to provide a gas monitoring and early warning system to solve the above problems to a certain extent.

[0040] In one embodiment, Figure 1 is a schematic block diagram of a gas monitoring and early warning system according to an exemplary embodiment. Figure 1 , providing a gas monitoring and early warning system, comprising:

[0041] Electronic nose detection device 11 (at least one can be provided, Figure 1Three are shown, namely electronic nose detection device 11, electronic nose detection device 12 and electronic nose detection device 13), edge computing device 20, data display center 30 and intelligent alarm device 40.

[0042] The electronic nose detection device 11 is used to identify the gas in the environment, generate a fingerprint map with the concentration information of the environmental gas components, and send the fingerprint map through the LoRa data transmission terminal.

[0043] The edge computing device 20 receives the fingerprint spectrum through the LoRa wireless base station 21, analyzes the fingerprint spectrum, and obtains the gas type and the corresponding gas concentration.

[0044] The data display center 30 is connected to the edge computing device 20 to record the gas type and the corresponding gas concentration in real time, and predict the occurrence time of the generated concentration limit value based on the recorded data.

[0045] The intelligent alarm device 40 issues early warning and alarm according to the occurrence time of the concentration limit value.

[0046] In specific practice, the gas monitoring and early warning system includes two major parts: a gas detection part and a control part. The gas detection part is composed of an electronic nose detection device 11 and an edge computing device 20, and the control part is composed of a data display center 30 and an intelligent alarm device 40.

[0047] The electronic nose detection device 11 can independently identify the gas in the environment and generate a fingerprint with the concentration information of the environmental gas components. The electronic nose detection device is equipped with a LoRa data transmission terminal and can transmit data without a network.

[0048] The edge computing device 20 is equipped with a LoRa wireless base station, which can receive and analyze the data sent by the electronic nose detection device 11. It should be noted that when the fingerprint spectrum is received, the fingerprint spectrum can also be pre-processed, including: data cleaning, denoising, feature extraction and other operations. The edge computing device 20 executes a fast pattern recognition algorithm to determine the type and concentration of the detected gas.

[0049] The data display center 30 is connected to the edge computing device 20, obtains the output data of the edge computing device 20, records the real-time gas concentration, and predicts the occurrence time of the generated concentration limit. Preferably, the data display center 30 can also draw a predicted concentration change map to help the crew take timely response plans according to the situation of harmful gases.

[0050] The intelligent alarm device 40 receives the occurrence time of the concentration limit output by the data display center 30, performs early warning, and sends out an alarm signal when the concentration of harmful gases reaches the critical limit. Preferably, it can also receive concentration data to make the alarm time more accurate.

[0051] It is understandable that the technical solution shown in this embodiment uses electronic nose detection equipment to identify gases, generate fingerprints with information on the concentration of environmental gas components, and send them through the LoRa data transmission terminal; the edge computing device receives the fingerprint through the LoRa wireless base station, analyzes it, and obtains the gas type and concentration; the data display center is connected to the edge computing device, records gas data in real time, and predicts the time of occurrence of the generated concentration limit; the intelligent alarm device issues warnings and alarms based on the time of occurrence of the concentration limit. It is understandable that this technical solution can ensure the effectiveness of data transmission and the timeliness of data on the back end in areas where the signal is unstable through the electronic nose combined with edge computing equipment analysis, and can quickly respond to the accumulation of harmful gases in the environment, make predictions and alarms on the accumulation of gas concentrations, and ensure the safety of crew production work.

[0052] It should be noted that the edge computing device is also used to determine whether the fingerprint spectrum is abnormal. If so, a repeat measurement instruction is sent to the corresponding electronic nose detection device through the LoRa wireless base station;

[0053] When the electronic nose detection device receives the repeated measurement instruction through the LoRa data transmission terminal, the electronic nose detection device performs secondary identification of the gas in the environment according to the repeated measurement instruction.

[0054] Figure 2 It is a schematic flow chart of data transmission according to an exemplary embodiment. It can be understood that, through the secondary repeated identification, abnormal data can be eliminated, so that the alarm accuracy is higher.

[0055] The technical process of this embodiment is as follows: the electronic nose detector installed in the cabin of the fishing boat extracts the gas in the cabin environment through an intermittent detection mode, analyzes the extracted gas through an electrochemical sensor, and generates fingerprint spectrum data with environmental gas component concentration information.

[0056] It is worth noting that the electronic nose detector is equipped with a LoRa terminal, which transmits data to an edge computing device equipped with a LoRa wireless base station through the LoRa protocol. This process uses a single-hop specified ISM frequency band for wireless linking. The edge computing device preprocesses and extracts features of the received gas data, inputs the preprocessed data into the analysis model for processing, records the data reception time and the composition and concentration of the ambient gas, and outputs it to the data display center. For problematic data, the edge computing device sends downlink data or control instructions to the LoRa node through the LoRa wireless base station. After receiving the instructions, the LoRa node controls the electronic nose detection device to repeat the measurement. After obtaining the calculation result data, the data display center statistically analyzes the changes in gas concentration in the cabin by drawing, calculates the possible concentration change trend, calculates the time when the concentration may reach the hazard limit, and issues an early warning. The early warning signal controls the intelligent alarm device, broadcasts the time when the harmful gas may reach the hazard limit, helps the staff take preventive measures in advance, and continuously monitors in the later stage to alarm the gas that has reached the hazard limit.

[0057] It should be noted that the electronic nose detection device 11 further includes: an electronic nose element gas sensor and a data temporary storage module.

[0058] The electronic nose detection device 11 utilizes the electronic nose element gas sensor to absorb ambient gas for identification at preset intervals, generates a fingerprint map with ambient gas component concentration information, and temporarily stores the fingerprint map through a temporary storage module.

[0059] In specific practice, the electronic nose detection device 11 also includes necessary elements such as a gas transmission pipeline.

[0060] The signal transmission adopts the LoRa data transmission terminal, and the data is transmitted through the LoRa wireless network through the LoRa wireless air interface technology. Therefore, the electronic nose detection device 11 and the edge computing device 20 do not need to be connected by a data cable, reducing wiring.

[0061] It should be noted that the gas sensor of the electronic nose element is an electrochemical sensor to improve the efficiency of detecting environmental gases.

[0062] It should be noted that the electronic nose detection device 11 further includes: an independent power storage module, which is used to power the electronic nose detection device 11, and can be self-powered or externally powered.

[0063] It should be noted that the edge computing device 20 includes: a LoRa wireless base station and an edge computing module.

[0064] The LoRa wireless base station is used to receive and analyze the fingerprint spectrum and send the fingerprint spectrum to the edge computing module. The LoRa wireless base station can receive wireless access and aggregation of LoRa terminal data to improve data transmission rate and accuracy.

[0065] The edge computing module is used to analyze the fingerprint spectrum using an independent data processing model to obtain the gas type and the corresponding gas concentration.

[0066] The edge computing module has an independent data processing model. The data collected by the LoRa terminal of the electronic nose sensor is directly received and analyzed in the LoRa wireless base station close to the data generation. The analyzed data is then sent to the edge computing device for analysis in the local device, without the need to transmit the data to the cloud data processing center.

[0067] After analyzing the data, the edge computing device 20 outputs the results to the data display center 30 to report and analyze the trends of the results.

[0068] It should be noted that the data display center 30 is also used to analyze the gas types and corresponding gas concentrations recorded in real time using data analysis and drawing software, and predict and draw a gas concentration change curve.

[0069] In specific practice, the data display center includes data analysis and drawing software to analyze possible gas concentration change curves and determine concentration change trends so that the crew can provide early warning.

[0070] It should be noted that the intelligent alarm device 40 is also used to issue an early warning and an alarm according to the occurrence time of the concentration limit value, including:

[0071] According to the time of occurrence of the concentration limit, determine whether the concentration has reached the warning limit corresponding to the concentration limit. If so, execute the first emergency response mode; according to the time of occurrence of the concentration limit, determine whether the concentration has reached the concentration limit. If so, execute the second emergency response mode.

[0072] In specific practice, the intelligent alarm device can be an audible and visual alarm, the first emergency response mode can be set to an interval time warning broadcast mode, and the second emergency response mode can be set to a whistle broadcast mode. For example, the appearance time of the concentration limit indicates that the concentration reaches the concentration limit in 15 minutes, and the warning limit is 10 minutes. Therefore, in the next 5 to 15 minutes, the interval time warning broadcast mode will be used to warn the crew, and after 15 minutes, the concentration is expected to reach the concentration limit, then the whistle broadcast mode will be used to warn the crew.

[0073] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0074] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0075] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0076] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0077] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0078] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0079] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0081] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A gas monitoring and early warning system, characterized in that: include: Electronic nose detection equipment, edge computing equipment, data display center and intelligent alarm device; The electronic nose detection device is used to identify the gas in the environment, generate a fingerprint with the concentration information of the environmental gas components, and send the fingerprint through the LoRa data transmission terminal; The edge computing device receives the fingerprint spectrum through the LoRa wireless base station, analyzes the fingerprint spectrum, and obtains the gas type and the corresponding gas concentration; The data display center is connected to the edge computing device to record the gas type and the corresponding gas concentration in real time, and predict the occurrence time of the generated concentration limit value based on the recorded data; The intelligent alarm device issues early warning and alarm according to the occurrence time of the concentration limit value.

2. The gas monitoring and early warning system according to claim 1 is characterized in that: The edge computing device is also used to determine whether the fingerprint spectrum is abnormal. If so, a repeat measurement instruction is sent to the corresponding electronic nose detection device through the LoRa wireless base station; When the electronic nose detection device receives the repeated measurement instruction through the LoRa data transmission terminal, the electronic nose detection device performs secondary identification of the gas in the environment according to the repeated measurement instruction.

3. The gas monitoring and early warning system according to claim 1 is characterized in that: The electronic nose detection device further comprises: Electronic nose components: gas sensors and data temporary storage modules; The electronic nose detection device utilizes the electronic nose element gas sensor to absorb ambient gas for identification at preset intervals, generates a fingerprint map with ambient gas component concentration information, and temporarily stores the fingerprint map through a temporary storage module.

4. The gas monitoring and early warning system according to claim 1, characterized in that: The edge computing device comprises: LoRa wireless base station and edge computing module; The LoRa wireless base station is used to receive and analyze the fingerprint map, and send the fingerprint map to the edge computing module; The edge computing module is used to analyze the fingerprint spectrum using an independent data processing model to obtain the gas type and the corresponding gas concentration.

5. The gas monitoring and early warning system according to claim 1, characterized in that: The data display center is also used to analyze the gas types and corresponding gas concentrations recorded in real time using data analysis and drawing software, and predict and draw a gas concentration change curve.

6. The gas monitoring and early warning system according to claim 1, characterized in that: The intelligent alarm device is also used to issue an early warning and an alarm according to the occurrence time of the concentration limit value, including: Determine whether the concentration reaches the warning limit corresponding to the concentration limit according to the occurrence time of the concentration limit, and if so, execute the first emergency response mode; Whether the concentration reaches the concentration limit is determined according to the time when the concentration limit occurs. If so, the second emergency response mode is executed.

7. The gas monitoring and early warning system according to claim 1, characterized in that: The edge computing device is also used to pre-process the fingerprint map when receiving the fingerprint map.

8. The gas monitoring and early warning system according to claim 3 is characterized in that: The electronic nose element gas sensor is an electrochemical sensor.

9. The gas monitoring and early warning system according to claim 3, characterized in that: The electronic nose detection device further comprises: An independent power storage module is used to supply power to the electronic nose detection device.

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