Module of multiple gas sensors

Abstract

The utility model discloses a module with multiple gas sensors. The module comprises a metal tube shell, a filtering device and a sensing device, the metal tube shell is in a round cap shape with a hole formed in the top face. The filter device comprises two layers of metal filter screens, two layers of water-filtering breathable films, two positioning circular rings and an activated carbon filter block; the sensing device comprises a plurality of LGA sensors, a central processing unit, two PCBs, a connecting block and a plurality of electrode pins. Through specific implementation, problems in the prior art can be solved, the accuracy, the reliability and the consistency of gas concentration detection are improved, the overall detection efficiency is improved, and due to the adoption of a unified standard protocol, the module is more convenient to use and maintain, more and wider in use scene and more suitable for popularization and application. The application and development of a gas sensing technology in various fields are facilitated; the overall performance of the gas sensor is remarkably improved, and the gas sensor is suitable for more practical applications.

Description

Technical Field

[0001] The utility model relates to the field of gas (odor) detection, and in particular to a module of multiple gas sensors. Background Art

[0002] Gas sensor modules are increasingly used in the field of gas detection, particularly in environmental protection, industrial safety, and biomedicine, where they are crucial for accurately detecting gas concentration, composition, and other information. However, most sensor modules currently available on the market consist of single gas sensors, and their gas-sensitive materials are typically not subjected to additional packaging. This leads to limitations in gas concentration detection and susceptibility to external factors (such as temperature, humidity, and interference from other gases), resulting in large errors, poor consistency, low accuracy, and even corrosion damage that renders them unusable.

[0003] Among existing technical implementations, the closest to the present invention are modules that integrate multiple single gas sensors. These modules attempt to improve detection accuracy and reliability by increasing the number of sensors. However, these modules still have some problems in their design and implementation. First, they do not perform additional packaging on the gas sensors, making them susceptible to interference from external factors. This still results in large errors, poor consistency, low accuracy, and even corrosion damage that renders them unusable. Second, these modules lack unified standard protocols for sensor integration and signal output, leading to interference and confusion during use and maintenance. Utility Model Content

[0004] To address the aforementioned technical issues, this utility model scientifically designs a multi-gas sensor module. Its core lies in its built-in integration capabilities for single or multiple gas sensors, and its signal output utilizes a unified standard protocol. Furthermore, the gas-sensitive materials are encapsulated in a metal housing and undergo multiple filtration processes, including impurity, moisture, and odor filtering, to minimize the impact of external factors on detection results.

[0005] The technical solution adopted by the present invention to solve the above problems is: a module of multiple gas sensors, including a metal tube shell, a filtering device and a sensing device;

[0006] The metal tube shell is configured in a round cap shape with an opening on the top surface;

[0007] The filtering device comprises two identical layers of metal filter screens, two identical layers of water filter breathable membranes, two identical positioning rings, and an activated carbon filter block;

[0008] The sensing device includes several LGA sensors, a central processing unit, two PCB boards, a connecting block and several electrode pins;

[0009] The filtering device is installed in the metal tube shell, and is provided with the upper metal filter, the upper water filter breathable membrane, an upper positioning ring embedded with the activated carbon filter block, the lower water filter breathable membrane, the lower metal filter, and a hollow lower positioning ring in sequence from top to bottom;

[0010] The upper ends of the plurality of electrode pins pass through the top surface of the lower PCB board from bottom to top, and are connected to the central processing unit on the upper PCB board through the connecting block. The upper PCB board is provided with a plurality of LGA sensors in an array, and the plurality of LGA sensors are respectively connected to the central processing unit;

[0011] The upper PCB board in the sensing device is tightly fitted with the bottom surface of the lower positioning ring in the filtering device. The several LGA sensors and the central processing unit on the top surface of the upper PCB board are located in the cavity in the middle of the lower positioning ring. The outer periphery of the lower PCB board is clamped on the lower part of the inner wall of the metal tube shell to form a seal, forming a complete multi-gas sensor module.

[0012] The central processing unit on the top surface of the upper PCB board in the sensing device is either arranged in the middle of the plurality of LGA sensor arrays or arranged on one side of the plurality of LGA sensor arrays. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a half-section schematic diagram of the overall structure of the utility model;

[0015] Figure 3 This is an exploded schematic diagram of the overall structure of the utility model;

[0016] Figure 4 Schematic diagram of the arrangement of several LGA sensors and central processing units of the present invention Figure 1 ;

[0017] Figure 5 Schematic diagram of the arrangement of several LGA sensors and central processing units of the present invention Figure 2 . DETAILED DESCRIPTION

[0018] The following describes further detailed embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the following descriptions of the embodiments are intended only to facilitate understanding of the present invention and are not intended to limit the technical solutions described herein. Furthermore, the technical features of the various embodiments of the present invention described below may be combined as long as they do not conflict with one another.

[0019] In this specific embodiment, Figure 1-5 As shown, a module of multiple gas sensors includes a metal tube shell 2, a filtering device and a sensing device;

[0020] The metal tube shell 2 is configured in a round cap shape with an opening on the top surface;

[0021] The filtering device comprises two identical layers of metal filter screens 1, two identical layers of water filter breathable membranes 4, two identical positioning rings 6, and an activated carbon filter block 5;

[0022] The sensing device includes several LGA sensors 7, a central processing unit 9, two PCB boards 8 and 11, a connecting block 10 and several electrode pins 3;

[0023] The filtering device is installed in the metal tube shell 2, and is sequentially provided with the upper metal filter 1 for filtering particulate impurities, the upper water filter breathable membrane 4 for filtering moisture, an upper positioning ring 6 embedded with the activated carbon filter block 5 for filtering odors, the lower water filter breathable membrane 4 for filtering moisture, the lower metal filter 1 for filtering impurities and holding the activated filter block 5, and a hollow lower positioning ring 6 for positioning;

[0024] The upper ends of the plurality of electrode pins 3 pass through the top surface of the lower PCB board 11 from bottom to top, and are connected to the central processing unit 9 on the upper PCB board 8 through the connecting block 10. The upper PCB board 8 is provided with a plurality of LGA sensors 7 in an array, and the plurality of LGA sensors 7 are respectively connected to the central processing unit 9;

[0025] The plurality of LGA sensors 7 transmit the collected information to the central processor 9 respectively. The central processor 9 transmits the processed information to the plurality of electrode pins 3 through the connection block 10, and then transmits the information to the terminal device for display, thereby completing the gas sensing detection.

[0026] The upper PCB board 8 in the sensing device is tightly fitted with the bottom surface of the lower positioning ring 6 in the filtering device. The several LGA sensors 7 and the central processing unit 9 on the top surface of the upper PCB board 8 are located in the cavity in the middle of the lower positioning ring 6. The outer periphery of the lower PCB board 11 is clamped on the lower part of the inner wall of the metal tube shell 2 to form a seal, forming a complete multi-gas sensor module.

[0027] In this specific embodiment, Figure 4-5 As shown, the central processor 9 on the top surface of the upper PCB board 8 in the sensing device is either set in the middle of the array of several LGA sensors 7 or on one side of the array of several LGA sensors 7, and can be flexibly arranged and assembled.

[0028] Compared with the prior art, the advantages of the present invention are:

[0029] The utility model discloses a module of multiple gas sensors, including a metal tube shell, a filtering device and a sensing device; the metal tube shell is arranged in a round cap shape with an opening on the top surface; the filtering device includes two layers of metal filter mesh, two layers of water filter breathable membrane, two positioning rings, and an activated carbon filter block; the sensing device includes several LGA sensors, a central processing unit, two PCB boards, a connecting block and several electrode pins; through specific implementation, it can solve the problems existing in the existing technology, improve the accuracy, reliability and consistency of gas concentration detection, and improve the overall detection efficiency. Due to the use of a unified standard protocol, the module of the utility model is also more convenient in use and maintenance, making its use scenarios more numerous and wider, which is conducive to the application and development of gas sensing technology in various fields; significantly improves the overall performance of the gas sensor, ensuring its suitability for more practical applications.

[0030] Finally, it should be noted that the specific embodiments described herein are merely illustrative of the spirit of this utility model and are not intended to limit its implementation. Those skilled in the art of the present utility model may make various modifications, additions, or substitute similar methods to the described specific embodiments. It is not necessary and impossible to provide comprehensive examples of all implementations here. However, obvious changes or modifications arising from the essential spirit of this utility model remain within the scope of protection of this utility model, and interpreting them as any additional limitations is contrary to the spirit of this utility model.

Claims

1. A module of multiple gas sensors, characterized by: A module of multiple gas sensors, including a metal tube shell, a filtering device and a sensing device; The metal tube shell is configured in a round cap shape with an opening on the top surface; The filtering device comprises two identical layers of metal filter screens, two identical layers of water filter breathable membranes, two identical positioning rings, and an activated carbon filter block; The sensing device includes several LGA sensors, a central processing unit, two PCB boards, a connecting block and several electrode pins; The filtering device is installed in the metal tube shell, and is provided with the upper metal filter, the upper water filter breathable membrane, an upper positioning ring embedded with the activated carbon filter block, the lower water filter breathable membrane, the lower metal filter, and a hollow lower positioning ring in sequence from top to bottom; The upper ends of the plurality of electrode pins pass through the top surface of the lower PCB board from bottom to top, and are connected to the central processing unit on the upper PCB board through the connecting block. The upper PCB board is provided with a plurality of LGA sensors in an array, and the plurality of LGA sensors are respectively connected to the central processing unit; The upper PCB board in the sensing device is tightly fitted with the bottom surface of the lower positioning ring in the filtering device. The several LGA sensors and the central processing unit on the top surface of the upper PCB board are located in the cavity in the middle of the lower positioning ring. The outer periphery of the lower PCB board is clamped on the lower part of the inner wall of the metal tube shell to form a seal, forming a complete multi-gas sensor module.

2. The multiple gas sensor module according to claim 1, characterized in that: The central processing unit on the top surface of the upper PCB board in the sensing device is either arranged in the middle of the plurality of LGA sensor arrays or arranged on one side of the plurality of LGA sensor arrays.

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