Laser methane sensor

Abstract

The utility model provides a laser methane sensor which comprises a sensor main body, the sensor main body comprises a cover body and a shell, the shell is provided with a display window, the cover body is detachably connected with the shell, and a circuit board is accommodated in the shell; the probe main body is used for detecting the concentration of methane gas, the probe main body is in signal connection with the circuit board, and the probe main body is mounted on the side wall of the shell; the warning lamp is in signal connection with the circuit board, and the warning lamp is installed on the side wall of the shell. According to the laser methane sensor disclosed by the utility model, the volume of the sensor main body is reduced, the layout of internal components is optimized, the sensor main body is more compact, unnecessary space occupation is reduced, the sensor is lighter and easier to carry, and the technical problem that the laser methane sensor is inconvenient to carry due to larger volume in the related technology is solved.

Description

Technical Field

[0001] This utility model relates to the field of methane sensor technology, specifically to a laser methane sensor. Background Technology

[0002] The working principle of a laser methane sensor is based on Tunable Semiconductor Laser Absorption Spectroscopy (TDLAS). It utilizes the wavelength tuning characteristics of a semiconductor laser and the selective absorption of laser light by the analyte gas to detect gas concentration. Specifically, the laser methane sensor emits laser light of a specific wavelength from a tunable semiconductor laser. When the laser light passes through methane gas, some of the light intensity is absorbed by the methane, and the change in light intensity is proportional to the methane concentration. By measuring the attenuation of the light intensity, the methane concentration can be determined.

[0003] Methane sensors are used in coal mine safety monitoring systems to continuously monitor methane concentration in coal mine roadways, mining faces, goaf areas, return airways, and electromechanical chambers. When the methane concentration exceeds the limit, it can automatically issue audible and visual alarms. It can be carried by coal mine workers, methane detection personnel, and underground management personnel, or it can be used in fixed locations in the above-mentioned places.

[0004] However, existing laser methane sensors are relatively large in size because components such as circuit boards, warning lights, and probes occupy a lot of space. This makes it extremely inconvenient for downhole managers to carry and use them, affecting their work efficiency.

[0005] Therefore, existing technologies need further development. Utility Model Content

[0006] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a laser methane sensor to solve the technical problem that the large size of laser methane sensors in related technologies makes them inconvenient to carry.

[0007] To achieve the above technical objectives, the present invention adopts the following technical solution: a laser methane sensor is provided, comprising: a sensor body, the sensor body including a cover and a housing, a display window provided on the housing, the cover being detachably connected to the housing, and a circuit board being housed inside the housing; a probe body, the probe body being used to detect methane gas concentration, the probe body being signal-connected to the circuit board, and the probe body being mounted on the side wall of the housing; and a warning light, the warning light being signal-connected to the circuit board, and the warning light being mounted on the side wall of the housing.

[0008] Furthermore, the sensor body has a cylindrical structure.

[0009] Furthermore, the probe body and the warning light are positioned opposite each other, located at opposite ends of the housing.

[0010] Furthermore, the laser methane sensor includes a display screen, which is located inside the housing and connected to the side of the circuit board near the cover. The display window on the cover is transparent.

[0011] Furthermore, the laser methane sensor includes a connection port for electrical connection with an external device, and the connection port is mounted on the side wall of the housing.

[0012] Furthermore, the circuit board includes: a first circuit board on which a display screen is mounted; a second circuit board spaced apart from the first circuit board along the height direction of the sensor body, and the second circuit board is signal-connected to the first circuit board; and circuit board fasteners for fixing the second circuit board and the first circuit board together.

[0013] Furthermore, the circuit board fasteners are fixedly connected to the cover to secure the circuit board to the cover.

[0014] Furthermore, the laser methane sensor includes a buzzer, which is installed on the side of the cover near the circuit board. The buzzer is configured to correspond to the sound outlet on the cover and is connected to the circuit board for signal transmission.

[0015] Furthermore, the laser methane sensor also includes an end cap connecting component, one side of which is connected to the end of the housing, and the other side of which is connected to the cover.

[0016] Furthermore, the laser methane sensor includes an end cap sealing ring, which is disposed between the cap body and the end cap connecting component.

[0017] Beneficial effects:

[0018] 1. In the laser methane sensor of this embodiment, the probe body and the warning light are protruded and set on the side wall of the housing, so that they are located outside the sensor body. This avoids occupying the internal volume of the sensor body, reduces the size of the sensor body, optimizes the internal component layout, reduces unnecessary space occupation, and makes the sensor body more compact and lighter and more portable. This solves the technical problem in the related art that the laser methane sensor is too large and therefore inconvenient to carry.

[0019] 2. The sensor body has a cylindrical structure. This cylindrical structure minimizes the space occupied by the sensor body, making the laser methane sensor compact. It also reduces friction during transport, improving the portability and ease of use of the laser methane sensor.

[0020] 3. By setting up a double-layer circuit board, the circuit board structure can be made more compact, avoiding taking up too much installation space, and further solving the technical problem that the large size of the laser methane sensor in related technologies makes it inconvenient to carry. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the laser methane sensor used in this embodiment of the utility model;

[0022] Figure 2 This is an exploded view of the laser methane sensor used in this embodiment of the invention;

[0023] Figure 3 This is a front view of the laser methane sensor used in this embodiment of the utility model;

[0024] Figure 4 yes Figure 3 AA section view in the image.

[0025] The above figures include the following reference numerals:

[0026] 1. Sensor body; 11. Cover; 12. Housing; 13. Display window; 14. Sound outlet; 2. Circuit board; 21. First circuit board; 22. Second circuit board; 23. Circuit board fastener; 3. Probe body; 4. Warning light; 5. Display screen; 6. Connection port; 7. Buzzer; 8. End cover connecting component; 9. End cover sealing ring. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] According to an embodiment of this utility model, a laser methane sensor is provided. Please refer to [link / reference]. Figures 1 to 4 The sensor body includes: a sensor body 1, which includes a cover 11 and a housing 12. The housing 12 has a display window 13. The cover 11 and the housing 12 are detachably connected. The housing 12 contains a circuit board 2. The sensor body 3 is used to detect the concentration of methane gas. The sensor body 3 is connected to the circuit board 2 and is mounted on the side wall of the housing 12. The sensor body 3 is also connected to the circuit board 2 and is mounted on the side wall of the housing 12. The sensor body 4 is also connected to the circuit board 2 and is mounted on the side wall of the housing 12.

[0029] In some embodiments, when the methane gas concentration is normal, the warning light 4 displays green; when the methane gas concentration is close to the warning standard, the warning light 4 displays yellow; and when the methane gas concentration exceeds the standard, the warning light 4 displays red.

[0030] With the above settings, the methane gas concentration is detected by the probe body 3, and the current methane detection status is displayed by the warning light 4. When the methane concentration exceeds the standard, it can promptly remind the staff. The current methane gas concentration can be observed through the display window 13. The probe body 3 and the warning light 4 are protruding and set on the side wall of the housing 12, so that they are located outside the sensor body 1, avoiding occupying the internal volume of the sensor body 1, reducing the volume of the sensor body 1, optimizing the internal component layout, reducing unnecessary space occupation, making the sensor body 1 more compact and lighter and more portable, and solving the technical problem of the large size of the laser methane sensor in related technologies, which makes it inconvenient to carry.

[0031] In the laser methane sensor of this embodiment, see... Figure 1 The sensor body 1 has a cylindrical structure. This cylindrical structure minimizes the space occupied by the sensor body 1, making the laser methane sensor compact. It also reduces friction during transport, improving the portability and ease of use of the laser methane sensor.

[0032] In some embodiments, the laser methane sensor can also be a spherical or conical structure, both of which can reduce the space occupied.

[0033] In the laser methane sensor of this embodiment, see... Figure 1 The probe body 3 and the warning light 4 are positioned opposite each other, located at both ends of the housing 12.

[0034] In some embodiments, the probe body 3 and the warning light 4 are located at the top and bottom of the housing 12, respectively, which makes the laser methane sensor aesthetically pleasing and also reduces the width of the housing 12.

[0035] In the laser methane sensor of this embodiment, see... Figure 2-3 The laser methane sensor includes a display screen 5, which is located inside the housing 12 and connected to the circuit board 2 near the cover 11. A transparent display window 13 is located on the cover 11. This arrangement protects the display screen 5 by placing it inside the housing 12, preventing dust and damage. The transparent cover on the display window 13 allows the user to easily observe the display screen 5.

[0036] In the laser methane sensor of this embodiment, see... Figure 2 or Figure 3 The laser methane sensor includes a connection port 6 for electrical connection with an external device. The connection port 6 is mounted on the side wall of the housing 12. Specifically, the external device can supply power to the laser methane sensor or transmit detection signals to the external device through the connection port 6.

[0037] In some embodiments, the probe body 3 and the warning light 4 are symmetrically arranged on both sides of the connection port 6, giving the laser methane sensor a certain aesthetic appeal.

[0038] In the laser methane sensor of this embodiment, see... Figure 2 or Figure 4 The circuit board 2 includes: a first circuit board 21 on which a display screen 5 is mounted; a second circuit board 22 spaced apart from the first circuit board 21 along the height of the sensor body 1, and connected to the first circuit board 21 via signal connections; and a circuit board fastener 23 for fixing the second circuit board 22 and the first circuit board 21 together. Specifically, by using a double-layered circuit board 2, the structure of the circuit board 2 can be made more compact, avoiding excessive installation space occupation, and further solving the technical problem of the large size of laser methane sensors in related technologies, which leads to inconvenience in carrying them.

[0039] In some embodiments, the shapes of the first circuit board 21 and the second circuit board 22 match the shape of the housing 12, which is also circular.

[0040] In some embodiments, the first circuit board 21 or the second circuit board 22 is provided with a clearance groove for avoiding components such as the buzzer 7.

[0041] In the laser methane sensor of this embodiment, see... Figure 1 The circuit board fastener 23 is fixedly connected to the cover 11 to fix the circuit board 2 onto the cover 11. In this way, the circuit board 2 can be fixed onto the cover 11, making the structure of the circuit board 2 more compact and avoiding taking up too much installation space. In addition, after the circuit board 2 is installed on the cover 11, the installation of the circuit board 2 can be completed when installing the cover 11, which also improves the convenience of assembly and maintenance of the circuit board 2.

[0042] It is understandable that fixing the circuit board 2 to the cover 11 allows the circuit board 2 to be suspended, and components can also be installed on the bottom surface of the second circuit board 22, making the structure of the circuit board 2 more compact.

[0043] In the laser methane sensor of this embodiment, see... Figure 1 or Figure 2The laser methane sensor includes a buzzer 7, which is installed on the side of the cover 11 near the circuit board 2. The buzzer 7 is correspondingly positioned to correspond to the sound outlet 14 on the cover 11, and the buzzer 7 is connected to the circuit board 2 for signal transmission. By setting the buzzer 7, an alarm sound is emitted to promptly notify the user that the methane gas concentration has exceeded the standard.

[0044] In the laser methane sensor of this embodiment, see... Figure 2 The laser methane sensor also includes an end cap connecting component 8, one side of which is connected to the end of the housing 12, and the other side of which is connected to the cover 11. By providing the end cap connecting component 8, the cover 11 and the housing 12 are connected together.

[0045] In some embodiments, the end cap connecting component 8 is a hollow annular structure, thereby reducing the overall weight of the laser methane sensor and facilitating the assembly or maintenance of the components inside the housing 12.

[0046] In the laser methane sensor of this embodiment, see... Figure 2 The laser methane sensor includes an end cap sealing ring 9, which is disposed between the cover body 11 and the end cap connecting component 8. By setting the end cap sealing ring 9 between the cover body 11 and the housing 12, a sealing effect is achieved, thus preventing dust and water from entering the housing 12.

[0047] In some embodiments, the end cap connecting component 8 and the end cap sealing ring 9 are fixed to the cover body 11 by end cap fasteners.

[0048] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0049] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0050] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0051] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0052] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A laser methane sensor, characterized in that The utility model relates to a laser methane sensor, which comprises the following parts: a sensor body (1) comprising a cover (11) and a shell (12) provided with a display window (13), the cover (11) being detachably connected with the shell (12), and the shell (12) containing a circuit board (2); a probe body (3) for detecting methane gas concentration, the probe body (3) being signal-connected with the circuit board (2) and mounted on the side wall of the shell (12); a warning light (4) signal-connected with the circuit board (2) and mounted on the side wall of the shell (12).

2. The laser methane sensor according to claim 1, characterized in that The sensor body (1) is in a cylindrical structure.

3. The laser methane sensor of claim 1, wherein, The probe body (3) and the warning light (4) are oppositely arranged at the two ends of the shell (12), respectively.

4. The laser methane sensor of claim 1, wherein, The laser methane sensor comprises a display screen (5) arranged inside the shell (12) and connected with the side of the circuit board (2) close to the cover (11), the display window (13) on the cover (11) being transparently arranged.

5. The laser methane sensor of claim 1, wherein, The laser methane sensor comprises a connecting port (6) for electrically connecting with external equipment, the connecting port (6) being mounted on the side wall of the shell (12).

6. The laser methane sensor of claim 4, wherein, The circuit board (2) comprises: a first circuit board (21) on which the display screen (5) is mounted; a second circuit board (22) arranged along the height direction of the sensor body (1) and signal-connected with the first circuit board (21); a circuit board fastener (23) by which the second circuit board (22) is fixedly connected with the first circuit board (21).

7. The laser methane sensor according to claim 6, characterized in that The circuit board fastener (23) is fixedly connected with the cover (11) to fix the circuit board (2) on the cover (11).

8. The laser methane sensor of claim 1, wherein, The laser methane sensor comprises: a buzzer (7) mounted on the side of the cover (11) close to the circuit board (2), the buzzer (7) being correspondingly arranged with a sound outlet (14) formed on the cover (11), and the buzzer (7) being signal-connected with the circuit board (2).

9. The laser methane sensor of claim 1, wherein, The laser methane sensor further comprises an end cover connecting component (8), one side of the end cover connecting component (8) being connected with the end of the shell (12), and the other side of the end cover connecting component (8) being connected with the cover (11).

10. The laser methane sensor according to claim 9, characterized in that The laser methane sensor comprises an end cover sealing ring (9) arranged between the cover (11) and the end cover connecting component (8).

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