A high-precision infrared optical gas sensor

Abstract

The utility model discloses a high-precision infrared optical gas sensor, which relates to the technical field of sensors, including a sensor body, a detection head is arranged on the sensor body, a square box is fixedly mounted on the sensor body, a micro motor is fixedly mounted inside the square box, a protective plate is arranged at one end of the sensor body, a connecting block is fixedly mounted on the protective plate, and a rotating shaft is fixedly mounted on the connecting block. The utility model provides a protective plate, and when the high-precision infrared optical gas sensor is not in use, the detection head is protected, and the micro motor is operated to drive the rotating shaft to rotate, and when the rotating shaft rotates, the position of the protective plate is driven to move through the connecting block, and then the protective plate is moved to one side of the detection head, and the detection head is sealed and protected, thereby improving the protection of the high-precision infrared optical gas sensor, and preventing foreign objects and impurities from affecting the detection accuracy and causing damage to the sensor when not in use.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a high-precision infrared optical gas sensor. Background Art

[0002] A high-precision infrared optical gas sensor is a device used to detect and analyze gas composition and concentration. It identifies and quantifies specific gases by detecting the absorption of infrared light by gas molecules. It has the characteristics of high selectivity, high sensitivity and high stability. Therefore, it is widely used in many fields. It can monitor pollutants in the air, such as carbon dioxide (CO2), carbon monoxide (CO), methane (CH4), etc., to assess air quality and support environmental protection measures.

[0003] For example, the application number CN206920331U discloses a high-precision infrared optical gas sensor, comprising a control circuit board (1), an analog signal processing circuit board (2), an infrared radiation source (3), a thermopile detector (4), a gas chamber (5), a metal shell (6), a filter (7) and an output pin (8); the control circuit board (1) comprises a power management circuit, an A / D converter, a light source driving circuit, a processor and peripheral circuits; the analog signal processing circuit board (2) comprises a signal conversion circuit and an amplification and filtering circuit; the gas chamber (5) adopts a nickel plating process to enhance the reflection efficiency of infrared light; the A / D converter adopts a 12-bit ADC inside the processor, which is beneficial to the reliability of A / D conversion and the sensor as a whole; a low-noise, rail-to-rail dual-channel precision operational amplifier is used for amplification and filtering of analog signals, and a bandpass filtering circuit is designed to effectively suppress circuit noise and improve the accuracy of sensor detection; the sensor has optimized design for temperature-sensitive circuits and devices, which can ensure that the sensor works normally within a wide temperature range and has high detection accuracy.

[0004] However, high-precision infrared optical gas sensors fail to fully consider the issue of effective sealing of the detection head when not in use. Over time, a large amount of impurities may be adsorbed on the detection head, which may affect the normal operation of the sensor, resulting in reduced accuracy of the measurement results, thereby affecting its application in accurately monitoring gas composition.

[0005] Therefore, in view of this, the shortcomings of the existing structure are studied and improved, and a high-precision infrared optical gas sensor is proposed. Utility Model Content

[0006] The utility model aims to provide a high-precision infrared optical gas sensor to solve the problem in the above background technology that it is inconvenient to seal and protect the probe when the sensor is not in use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision infrared optical gas sensor, comprising a sensor body, a detection head is arranged on the sensor body, a square box is fixedly installed on the sensor body, a micro motor is fixedly installed inside the square box, a protective plate is arranged at one end of the sensor body, a connecting block is fixedly installed on the protective plate, a rotating shaft is fixedly installed on the connecting block, and one end of the rotating shaft is fixedly connected to the output end of the micro motor.

[0008] Furthermore, a plug is fixedly mounted on the sensor body.

[0009] Furthermore, a rubber sleeve is installed around the sensor body.

[0010] Furthermore, a through hole corresponding to the rotating shaft is embedded in the top of the square box, and the rotating shaft extends to the inside of the square box through the through hole.

[0011] Furthermore, the protective plate is disc-shaped.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model provides a protective plate. When the high-precision infrared optical gas sensor is not in use, the detection head is protected. The micro motor is operated to drive the rotating shaft to rotate. When the rotating shaft rotates, the position of the protective plate is moved through the connecting block. After the protective plate is moved to one side of the detection head, the detection head is sealed and protected, thereby improving the protection of the high-precision infrared optical gas sensor and preventing foreign objects and impurities from affecting the detection accuracy and causing damage to the sensor when not in use.

[0014] 2. The utility model improves the protective performance of the high-precision infrared optical gas sensor by setting a rubber sleeve. When an external object touches the sensor body, the impact force is effectively alleviated to avoid damage to the sensor body caused by excessive impact force, thereby increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the sensor body;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of a square box;

[0018] Figure 4 A schematic diagram of the three-dimensional structure of the protective plate.

[0019] In the figure: 1. sensor body; 2. plug; 3. detection head; 4. square box; 5. micro motor; 6. rubber sleeve; 7. through hole; 8. rotating shaft; 9. connecting block; 10. protective plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] like Figure 1-Figure 4 As shown, a high-precision infrared optical gas sensor, a high-precision infrared optical gas sensor, includes a sensor body 1, a detection head 3 is arranged on the sensor body 1, a square box 4 is fixedly installed on the sensor body 1, a micro motor 5 is fixedly installed inside the square box 4, a protective plate 10 is arranged at one end of the sensor body 1, a connecting block 9 is fixedly installed on the protective plate 10, a rotating shaft 8 is fixedly installed on the connecting block 9, and one end of the rotating shaft 8 is fixedly connected to the output end of the micro motor 5. When the high-precision infrared optical gas sensor is used to analyze the gas concentration, the sensor body 1 is installed on the detection After being located, it is connected to the wire, so that the high-precision infrared optical gas sensor can work to monitor and analyze the gas concentration through the detection head 3. When the high-precision infrared optical gas sensor is not in use, the detection head 3 is protected, and the micro motor 5 is operated to drive the rotating shaft 8 to rotate. When the rotating shaft 8 rotates, the position of the protection plate 10 is driven to move through the connecting block 9, and then the protection plate 10 is moved to one side of the detection head 3, which will seal and protect the detection head 3, thereby improving the protection of the high-precision infrared optical gas sensor and preventing it from being affected and damaged by external objects when not in use.

[0023] Furthermore, a plug 2 is fixedly mounted on the sensor body 1 , and the sensor body 1 can be easily connected to a wire through the plug 2 .

[0024] Furthermore, a through hole 7 corresponding to the rotating shaft 8 is embedded on the top of the square box 4 , and the rotating shaft 8 extends to the inside of the square box 4 through the through hole 7 , and the through hole 7 facilitates the connection between the rotating shaft 8 and the output end of the micro motor 5 .

[0025] Furthermore, the protection plate 10 is disc-shaped, and the size of the protection plate 10 is equal to that of one end of the sensor body 1 .

[0026] Embodiment 2

[0027] like Figure 1 As shown, a high-precision infrared optical gas sensor proposed by the utility model, compared with Example 1, as another implementation mode of the utility model, a rubber sleeve 6 is installed around the sensor body 1, and the rubber sleeve 6 improves the protection performance of the high-precision infrared optical gas sensor. When an external object touches the sensor body 1, the impact force is effectively alleviated to avoid damage to the sensor body 1 due to excessive impact force, thereby improving the service life.

[0028] Working principle: When using this high-precision infrared optical gas sensor, first, install the sensor body 1 at the detection location and connect it to the wire, so that the high-precision infrared optical gas sensor can work to monitor and analyze the gas concentration through the detection head 3. When the high-precision infrared optical gas sensor is not in use, the detection head 3 is protected, and the micro motor 5 is driven to rotate the rotating shaft 8. When the rotating shaft 8 rotates, the position of the protective plate 10 is driven to move through the connecting block 9, and then the protective plate 10 is moved to one side of the detection head 3, and the detection head 3 is sealed and protected, thereby improving the protection of the high-precision infrared optical gas sensor and preventing it from being damaged by external objects when not in use.

[0029] Finally, the rubber sleeve 6 is used to improve the protection performance of the high-precision infrared optical gas sensor. When an external object touches the sensor body 1, the impact force is effectively alleviated to avoid damage to the sensor body 1 caused by excessive impact force, thereby increasing the service life.

[0030] This is how this high-precision infrared optical gas sensor works.

[0031] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A high-precision infrared optical gas sensor, comprising a sensor body (1), characterized in that: The sensor body (1) is provided with a detection head (3), a square box (4) is fixedly mounted on the sensor body (1), a micro motor (5) is fixedly mounted inside the square box (4), a protective plate (10) is provided at one end of the sensor body (1), a connecting block (9) is fixedly mounted on the protective plate (10), a rotating shaft (8) is fixedly mounted on the connecting block (9), and one end of the rotating shaft (8) is fixedly connected to the output end of the micro motor (5).

2. A high-precision infrared optical gas sensor according to claim 1, characterized in that: A plug (2) is fixedly mounted on the sensor body (1).

3. A high-precision infrared optical gas sensor according to claim 1, characterized in that: A rubber sleeve (6) is installed around the sensor body (1).

4. A high-precision infrared optical gas sensor according to claim 1, characterized in that: A through hole (7) corresponding to the rotating shaft (8) is embedded on the top of the square box (4), and the rotating shaft (8) extends to the interior of the square box (4) through the through hole (7).

5. A high-precision infrared optical gas sensor according to claim 1, characterized in that: The protective plate (10) is disc-shaped.

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