Carbon monoxide sensor with anti-electromagnetic interference function

Abstract

The utility model provides a carbon monoxide sensor with anti-electromagnetic interference, which relates to the technical field of gas sensors and comprises a shell, the shell comprises a front cover and a rear cover, a gas inlet penetrates through the top surface of the front cover, a disc is arranged in the rear cover, a main control board is arranged on the circumference of the top surface of the disc, and sensing elements are mounted on the main control board. An alignment cylinder is fixed to the top face of the main control board, the sensing elements are located in the alignment cylinder, a voltage transformation circuit board is installed at the center of the top face of the disc, a filter is arranged on the voltage transformation circuit board, the combination of various sensor elements is adopted, and the positions of the multiple sensing elements can be adjusted along with rotation of the disc. Corresponding sensor elements can be selected according to actual application requirements, different environment requirements are met, and a proper carbon monoxide detection mode can be flexibly selected according to actual application scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas sensor technical field especially relates to a carbon monoxide sensor with anti - electromagnetic interference. BACKGROUND

[0002] According to patent publication No. CN219641626U, carbon monoxide sensor includes the shell, positive pole pin, negative pole pin and membrane electrode assembly, the shell includes upper shell and lower shell, the upper shell is opened with the air inlet hole, the upper shell and the lower shell are opposite and are set up to form the cavity, the positive pole pin is set up in the lower shell outer surface, the negative pole pin is set up in the upper shell outer surface, the membrane electrode assembly is contained in the cavity, the membrane electrode assembly includes the working electrode, proton exchange membrane and counter electrode that set up in sequence, the working electrode is close to the upper shell and sets up, the counter electrode is close to the lower shell and sets up, adopt this sensor can avoid the problem that liquid electrolyte volatilization leads to sensor performance decline.

[0003] The above-mentioned carbon monoxide sensor is introduced, the traditional carbon monoxide sensor only uses single type sensor, can only use in certain specific environment, and error is easy to produce under different working conditions, and cannot be flexibly adjusted according to different detection requirements. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the technical problem that the traditional carbon monoxide sensor in the prior art cannot select appropriate sensing element according to different use scenarios, and provides a carbon monoxide sensor with anti-electromagnetic interference.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a carbon monoxide sensor with anti-electromagnetic interference, comprising a shell, the shell includes a front cover and a rear cover, the top surface of the front cover is penetrated by an air inlet, the inside of the rear cover is provided with a disc, and the top surface of the disc is circumferentially arrayed with a main control board, a sensing element is installed on the main control board, an alignment cylinder is fixed on the top surface of the main control board, and the sensing element is located in the alignment cylinder, a variable voltage circuit board is installed at the center position of the top surface of the disc, and a filter is arranged on the variable voltage circuit board.

[0006] Preferably, the connecting end of the front cover is matched with the inner wall of the rear cover, and the two are screw-connected.

[0007] Preferably, the sensing element comprises an electrochemical sensing element, a catalytic combustion sensing element, an infrared optical sensing element and a semiconductor sensing element.

[0008] Preferably, the main control board is provided with an indicator light, and the top surface of the front cover is provided with an observation plate.

[0009] Preferably, the air inlet is embedded with a filter plug, and the filter holes on the bottom surface of the filter plug are located on the top of the sensing elements.

[0010] Preferably, a rotating rod is fixed at the center of the bottom surface of the disc, and the rotating rod is rotationally connected with the rear cover, a driving element is installed inside the rear cover, gears are respectively fixed on the rotating end of the driving element and the surface of the rotating rod, and the two gears are meshed with each other.

[0011] Beneficial effects

[0012] In the utility model, a plurality of sensor elements can be rotated and adjusted in position along with the rotation of the disc, and corresponding sensor elements can be selected according to actual application requirements, different environmental requirements can be adapted to, suitable carbon monoxide detection modes can be flexibly selected according to actual use scenarios, the combination of a plurality of sensing technologies greatly improves the reliability of the equipment, accurate detection under a plurality of complex environments can be ensured, false judgments caused by environmental changes of single sensors are avoided, the equipment can be selected according to different use environments, scenarios and detection requirements, and is high in flexibility, a disc array design is adopted, and a plurality of sensor elements are arranged in a centralized manner, so that the volume of the sensors is reduced, the overall occupied space of the equipment is also reduced, and the equipment can be embedded in other equipment or carried alone. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is an assembly drawing of the utility model;

[0014] Figure 2 It is a perspective view of the utility model;

[0015] Figure 3 It is a disc overall structure view of the utility model;

[0016] Figure 4 It is a top view of the utility model;

[0017] Figure 5 It is an overall structure view of the inside of the shell of the utility model.

[0018] Fig. 1, shell; 11, front cover; 12, rear cover; 13, observation plate; 14, air inlet; 2, filter plug; 3, disc; 4, main control board; 41, alignment cylinder; 42, sensing element; 421, electrochemical sensing element; 422, catalytic combustion sensing element; 423, infrared optical sensing element; 424, semiconductor sensing element; 43, indicator light; 5, voltage conversion circuit board; 51, filter; 6, rotating rod; 7, driving element; 8, gear. DETAILED DESCRIPTION

[0019] In order to make the technical means, creation characteristics, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] The specific embodiments of the utility model are described below in combination with the drawings. Specific embodiments:

[0022] Referring to Figures 1-5 A carbon monoxide sensor with anti-electromagnetic interference, comprising a shell 1, the shell 1 comprises a front cover 11 and a rear cover 12, the connecting end of the front cover 11 is matched with the inner wall of the rear cover 12, and the two are screw connected, the top surface of the front cover 11 penetrates an air inlet 14, the air inlet 14 is embedded with a filter plug 2, and the filter hole in the bottom surface of the filter plug 2 is located at the top of the sensing element 42, the filter plug 2 is plugged at the air inlet 14 of the front cover 11, the filter plug 2 is mainly used for filtering impurities in the gas to avoid affecting the detection result, the filter plug 2 can be directly lifted out by a cross screwdriver, which is convenient for users to disassemble and replace, the main control board 4 and the variable voltage circuit board 5 are installed in the rear cover 12 through the disc 3, the shell 1 is the protective shell of the carbon monoxide sensor as a whole, wherein the plurality of main control boards 4 and variable voltage circuit boards 5 are located on the disc 3 inside the shell 1, the shell 1 is composed of the front cover 11 and the rear cover 12, wherein the threaded end on the surface of the front cover 11 is threadedly connected with the threaded end in the inner wall of the rear cover 12, the front cover 11 and the rear cover 12 can be directly installed or separated by rotating, which is convenient for personnel to maintain the components inside the shell 1 in the later period, when detecting carbon monoxide, the gas enters through the air inlet 14 of the front cover 11, the sensing element 42 at the corresponding position of the air inlet 14 is used to detect carbon monoxide and convert it into an electrical signal to display the value of carbon monoxide.

[0023] The inside of the back cover 12 is provided with a disc 3, and the top surface of the disc 3 is circumferentially provided with a main control board 4, and the main control board 4 is provided with a sensing element 42, which includes an electrochemical sensing element 421, a catalytic combustion sensing element 422, an infrared optical sensing element 423 and a semiconductor sensing element 424. Further, the main control board 4 is responsible for receiving signals from the sensing element 42, processing and analyzing the signals, converting the analog signals collected by the sensing element 42 into digital signals, and calculating the concentration of carbon monoxide through internal processing algorithms. The top surface of the main control board 4 is fixed with an alignment cylinder 41, and the sensing element 42 is located in the alignment cylinder 41. Since the circumferential array of the main control board 4 is embedded in the alignment cylinder 41 at the corresponding position of the sensing element 42 at the air inlet 14, the alignment cylinder 41 is fitted with the air inlet 14 during detection, so that the gas passes through the sensing element 42 at the corresponding position for detection. The sensing element 42 includes an electrochemical sensing element 421, a catalytic combustion sensing element 422, an infrared optical sensing element 423 and a semiconductor sensing element 424. Multiple sensing elements are concentrated on the disc 3, and can be interchanged according to the requirements of the use scene. The electrochemical sensor is suitable for accurate detection of low-concentration gas, the catalytic combustion sensor can work efficiently in industrial environment, the infrared optical sensor is suitable for high-concentration gas detection, and the semiconductor sensor is suitable for ordinary environment. The combination of the sensing technologies greatly improves the reliability of the equipment, ensures accurate detection in various complex environments, avoids misjudgment caused by environmental changes of a single sensor, and selects appropriate sensing technology according to different application scenarios, such as detection of low-concentration and high-concentration gas, detection requirements in home environment and industrial environment, which can be met by intelligently selecting different types of sensors, thereby significantly improving the applicability of the equipment.

[0024] The main control board 4 is provided with an indicator light 43, and the top surface of the front cover 11 is provided with an observation plate 13. Each main control board 4 further includes an indicator light 43. According to the detection result, the corresponding indicator light 43 works, and the user can directly and intuitively view the working state or result of the sensing element 42 through the observation plate 13 on the front cover 11. At the same time, a buzzer can be added to the shell 1 for warning, and the observation plate 13 is a transparent plate, so the user can directly view

[0025] A variable voltage circuit board 5 is installed at the center position of the top surface of the disc 3, and the variable voltage circuit board 5 is provided with a filter 51. The center position of the disc 3 further includes the variable voltage circuit board 5, which is connected to multiple main control boards 4 through multiple interfaces. The variable voltage circuit board 5 is mainly responsible for power conversion and stabilization to ensure the normal work of the sensor and its circuit. The filter 51 is located on the variable voltage circuit board 5, and its purpose is to suppress and filter the high-frequency noise and electromagnetic interference EMI in the power supply during the power input stage, to provide a more pure power signal, eliminate power fluctuations or peak interference such as surges and electromagnetic noise, so as to realize the anti-magnetic interference effect of the equipment.

[0026] The rotating rod 6 is fixed at the center of the bottom surface of the disc 3, and the rotating rod 6 is rotationally connected with the rear cover 12, the driving element 7 is installed in the rear cover 12, the rotating end of the driving element 7 and the surface of the rotating rod 6 are respectively fixed with the gear 8, and the two gears 8 are meshed with each other, the rotating rod 6 of the bottom of the disc 3 is rotationally connected with the rear cover 12, the driving element 7 in the rear cover 12 is a motor, and the gear 8 is installed at the rotating end of the driving element 7 and the surface of the rotating rod 6, the two gears 8 are meshed with each other, and the disc 3 can be automatically rotated to complete the position exchange of the plurality of groups of sensing elements 42 through the gear 8 transmission mode.

[0027] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "above", "over" and "on" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "under" and "under" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0028] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A carbon monoxide sensor with electromagnetic interference immunity, comprising a housing (1), characterized in that: The shell (1) comprises a front cover (11) and a back cover (12), the top surface of the front cover (11) is provided with an air inlet (14), the inside of the back cover (12) is provided with a disc (3), and the top surface of the disc (3) is provided with a main control board (4) in a circumferential array, the main control board (4) is provided with a sensing element (42), the top surface of the main control board (4) is fixed with an alignment cylinder (41), and the sensing element (42) is located in the alignment cylinder (41), the top surface of the disc (3) is provided with a transformer circuit board (5) at the center position, and the transformer circuit board (5) is provided with a filter (51).

2. The carbon monoxide sensor having anti-electromagnetic interference according to claim 1, wherein: The connecting end of the front cover (11) is matched with the inner wall of the back cover (12), and the two are screw-connected.

3. The carbon monoxide sensor with anti-electromagnetic interference according to claim 1, wherein: The sensing element (42) comprises an electrochemical sensing element (421), a catalytic combustion sensing element (422), an infrared optical sensing element (423) and a semiconductor sensing element (424).

4. The carbon monoxide sensor with anti-electromagnetic interference according to claim 1, wherein: The main control board (4) is provided with an indicating lamp (43), and the top surface of the front cover (11) is provided with an observation board (13).

5. The carbon monoxide sensor with anti-electromagnetic interference according to claim 1, wherein: The inside of the air inlet (14) is embedded with a filter plug (2), and the filter hole of the bottom surface of the filter plug (2) is located at the top of the sensing element (42).

6. The carbon monoxide sensor with anti-electromagnetic interference according to claim 1, wherein: The bottom surface of the disc (3) is fixed with a rotating rod (6) at the center, and the rotating rod (6) is rotatably connected with the back cover (12), the inside of the back cover (12) is provided with a driving element (7), the rotating end of the driving element (7) and the surface of the rotating rod (6) are respectively fixed with a gear (8), and the two gears (8) are meshed with each other.

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