A hand-held gas detector

Abstract

This invention discloses a portable gas detector, comprising a housing, a front cover, a rear cover, a display screen, an LCD touchscreen, a main board, a sensor board, an air pump, a support plate, a battery, a power board, a miniature printer, a handle module, handle fixing screws, a pneumatic connector module, and a folding antenna. The housing serves as the load-bearing base for the entire device. A handle module is mounted on the top of the housing via the handle fixing screws. The front cover is mounted on the front end of the housing. The display screen and LCD touchscreen are sequentially arranged inside the front cover. The LCD touchscreen is electrically connected to the main board, and the main board is electrically connected to the sensor board via connecting wires. The support plate is installed on the bottom inside the housing, and the battery, air pump, and sensor board are fixedly mounted on the support plate. The air pump is connected to the gas sensor circuit on the sensor board via a pipeline. This invention is easy to assemble and disassemble, enabling the entire device to be carried by hand. It can simultaneously detect multiple gas components and concentrations, and offers a wide range of detection functions.

Description

Technical Field

[0001] This invention relates to the field of detection instrument technology, and more particularly to a portable gas detector. Background Technology

[0002] Gas detectors are commonly used safety monitoring devices in fields such as industrial safety supervision, environmental monitoring, chemical inspection, and emergency rescue. They are mainly used to detect the composition and concentration parameters of various harmful and flammable gases in the working environment, providing data support for on-site safety management and hazard identification. Among them, handheld gas detectors are widely used in situations where fixed equipment cannot be adapted, such as outdoor scenarios without power supply, mobile inspections in factories, and gas detection in confined spaces, due to their portability and mobility. They are one of the core devices in the field of gas safety detection.

[0003] Currently, existing handheld gas detectors on the market still have many technical shortcomings, making it difficult to meet the needs of high-precision, multi-functional, and convenient on-site testing. First, the traditional equipment has an unreasonable structural layout design, with internal components such as sensors, air pumps, power supply components, and printing components arranged haphazardly without a regular integrated and fixed structure. This not only results in low equipment assembly efficiency and difficulty in subsequent fault diagnosis and component replacement and maintenance, but also makes internal components susceptible to vibration during handheld operation, leading to problems such as gas path misalignment, loose wiring, and abnormal detection, resulting in poor equipment operational stability.

[0004] Secondly, existing portable gas detectors have low functional integration, with most devices only having gas detection and screen display functions, resulting in limited functionality. Some devices lack on-site printing capabilities, meaning test data can only be stored internally or exported and printed via external devices, making it impossible to quickly generate paper test reports on-site. This makes it difficult to meet the immediate archiving needs of scenarios such as safety supervision verification and on-site evidence collection. At the same time, most devices lack wireless transmission modules, preventing remote real-time uploading of test data. This data transmission lag hinders real-time monitoring and data aggregation and analysis in the cloud, resulting in a low level of intelligent operation. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a portable gas detector.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A portable gas detector includes a housing, a front cover, a rear cover, a display screen, an LCD touch screen, a motherboard, a sensor board, an air pump, a bracket board, a battery, a power board, a miniature printer, a handle module, handle fixing screws, a pneumatic connector module, and a folding antenna. The housing serves as the base for the entire machine. A handle module is mounted on the top of the housing via handle fixing screws. A front cover is mounted on the front end of the housing. A display screen and an LCD touch screen are arranged sequentially on the inner side of the front cover. The LCD touch screen is electrically connected to the motherboard, and the motherboard is electrically connected to the sensor board via connecting wires. The bracket plate is installed inside the bottom side of the housing, and the battery, air pump and sensor plate are fixedly installed on the bracket plate; the air pump is connected to the gas sensor gas path on the sensor plate through a pipeline. The rear cover is installed on the rear side of the housing. The power board and the micro printer are assembled on the inner side of the rear cover. A pneumatic connector module and a detachable folding antenna are provided on the outer side of the rear cover. The power board is electrically connected to the battery, the motherboard, and the micro printer.

[0007] Preferably, the handle module is an external carrying structure, which can be detachably locked to the top surface of the housing by a handle fixing screw, for carrying and transporting the whole machine by hand.

[0008] Preferably, the folding antenna is detachably mounted on the back cover, and the folding antenna is connected to the motherboard signal to realize wireless data transmission.

[0009] Preferably, the micro printer is embedded in the rear cover and is electrically connected to the motherboard for on-site printing of gas detection data.

[0010] Preferably, the pneumatic connector module is located on the outside of the rear cover, and the pneumatic connector module is connected to the air pump inlet circuit, serving as an interface for accessing the external gas to be tested.

[0011] Preferably, the sensor board integrates multiple gas sensors, and the air pump provides the pumping power to draw the external gas to be tested into the sensor detection chamber of the sensor board to complete the gas detection.

[0012] Preferably, the battery and power board work together to provide power to the motherboard, LCD touch screen, air pump, sensor board, and mini printer, enabling offline handheld operation of the device.

[0013] The beneficial effects of this invention are as follows: 1. This solution features a detachable handle module, which is secured to the top of the housing with handle fixing screws. This allows for easy assembly and disassembly, enabling the entire machine to be carried by hand. It also supports offline operation without an external power supply, making it suitable for mobile testing conditions such as on-site inspections and emergency field operations, and offering high flexibility in use.

[0014] 2. The rear cover integrates a pneumatic connector module, a micro printer, and a detachable foldable antenna. The pneumatic connector module serves as the input port for the gas to be tested. With the help of the built-in air pump, the gas can be actively drawn into the sensor board detection chamber. Compared with diffusion sampling, the gas sample is fully introduced and the detection response speed is faster. The sensor board integrates multiple gas sensors, which can simultaneously complete the detection of multiple gas components and concentrations, providing rich detection functions.

[0015] 3. The internal components are centrally fixed using a bracket plate. The battery, air pump, and sensor board are uniformly installed on the bracket plate on the bottom side inside the housing. The circuit boards and air circuit components are neatly arranged, making assembly, inspection, and maintenance convenient. The front and rear covers cooperate with the housing to form a closed protection for the internal circuit boards, air pump, battery, and other components. During handheld operation, it can reduce the interference of vibration and external debris on the internal components, ensuring the stable and reliable operation of the entire process of sampling, detection, local display, on-site printing, and wireless upload.

[0016] 4. The battery, together with the power board, provides power to the motherboard, LCD touch screen, air pump, sensor board, and mini printer. The overall power supply architecture is clear, and the power supply to each functional component is stable. The display screen and LCD touch screen are integrated on the inside of the front cover, which takes into account both data display and human-computer interaction, making operation intuitive and convenient. Attached Figure Description

[0017] Figure 1 This is a first three-dimensional structural schematic diagram of a portable gas detector proposed in this invention; Figure 2 This is a schematic diagram of the second three-dimensional structure of a portable gas detector proposed in this invention; Figure 3 This is a schematic diagram of the exploded structure of a portable gas detector proposed in this invention; Figure 4 This is a partial three-dimensional structural schematic diagram of a portable gas detector proposed in this invention; Figure 5 This is a schematic diagram of the first partial unfolded three-dimensional structure of a portable gas detector proposed in this invention; Figure 6 This is a schematic diagram of the second partial unfolded three-dimensional structure of a portable gas detector proposed in this invention.

[0018] In the diagram: 1. Display screen; 2. Front cover; 3. LCD touch screen; 4. Main board; 5. Connecting cable; 6. Sensor board; 7. Air pump; 8. Bracket board; 9. Battery; 10. Power board; 11. Mini printer; 12. Back cover; 13. Housing; 14. Handle module; 15. Handle fixing screw; 16. Pneumatic connector module; 17. Folding antenna. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figures 1-6 A portable gas detector includes a housing 13, a front cover 2, a rear cover 12, a display screen 1, an LCD touch screen 3, a main board 4, a sensor board 6, an air pump 7, a bracket board 8, a battery 9, a power board 10, a micro printer 11, a handle module 14, a handle fixing screw 15, a pneumatic connector module 16, and a folding antenna 17. The housing 13 is the base for supporting the whole machine. The top of the housing 13 is equipped with a handle module 14 by a handle fixing screw 15. The front cover 2 is installed at the front end of the housing 13. The display screen 1 and the LCD touch screen 3 are arranged in sequence on the inside of the front cover 2. The LCD touch screen 3 is electrically connected to the motherboard 4. The motherboard 4 is electrically connected to the sensor board 6 through the connecting wire 5. The bracket plate 8 is installed inside the bottom side of the housing 13. The battery 9, the air pump 7 and the sensor plate 6 are fixedly installed on the bracket plate 8. The air pump 7 is connected to the gas sensor air passage on the sensor plate 6 through a pipeline. The rear cover 12 is installed on the rear side of the housing 13. The power board 10 and the micro printer 11 are assembled on the inner side of the rear cover 12. The pneumatic connector module 16 and the detachable folding antenna 17 are arranged on the outer side of the rear cover 12. The power board 10 is electrically connected to the battery 9, the motherboard 4 and the micro printer 11 respectively.

[0021] In this invention, the handle module 14 is an external carrying structure, which can be detachably locked to the top surface of the housing 13 by the handle fixing screw 15, for carrying and transporting the whole machine by hand.

[0022] In this invention, the foldable antenna 17 is detachably mounted on the back cover 12, and the foldable antenna 17 is connected to the motherboard 4 to realize wireless data transmission.

[0023] In this invention, a micro printer 11 is embedded in the back cover 12 and is electrically connected to the motherboard 4 for on-site printing output of gas detection data.

[0024] In this invention, the pneumatic connector module 16 is located on the outside of the rear cover 12. The pneumatic connector module 16 is connected to the air inlet of the air pump 7 and serves as an interface for accessing the external gas to be tested.

[0025] In this invention, the sensor board 6 integrates multiple gas sensors, and the air pump 7 provides the pumping power to draw the external gas to be tested into the sensor detection cavity of the sensor board 6 to complete the gas detection.

[0026] In this invention, the battery 9 and the power board 10 work together to provide power to the motherboard 4, the LCD touch screen 3, the air pump 7, the sensor board 6, and the micro printer 11, enabling offline handheld operation of the device.

[0027] Working Principle: This portable gas detector is powered by battery 9 and power board 10. Power board 10 supplies power to main board 4, LCD touch screen 3, air pump 7, sensor board 6, and micro printer 11. The device can operate offline without an external power source. When the device is working, the external gas to be tested is connected to the internal gas path of the whole machine through the pneumatic connector module 16 on the outside of the rear cover 12. The pneumatic connector module 16 is connected to the air inlet of air pump 7. Air pump 7 is fixed on the bracket plate 8 on the bottom side inside the housing 13. Air pump 7 outputs suction power to draw the gas to be tested and deliver it to the sensor detection chamber of sensor board 6. Sensor board 6 is also fixedly installed on bracket plate 8. Sensor board 6 integrates multiple gas sensors to collect and detect the composition and concentration parameters of the gas to be tested. Sensor board 6 transmits the collected gas detection signal to main board 4 through connecting cable 5. LCD touch screen 3 is located inside front cover 2 and is electrically connected to main board 4. The operator can use the LCD touch screen to detect the gas. Screen 3 completes the human-computer interaction operation, and the detection data processed by the motherboard 4 can be displayed in real time through the display screen 1. On the one hand, the motherboard 4 sends the detection data to the micro printer 11, which is embedded in the back cover 12 and electrically connected to the motherboard 4, and can complete the on-site printing output of the detected gas data. On the other hand, the motherboard 4 establishes a signal connection with the detachable folding antenna 17 on the outside of the back cover 12. The folding antenna 17 sends the internal data of the detector to the outside, realizing wireless data transmission. The housing 13 serves as the base for the whole machine. The top surface of the housing 13 is detachably locked with the handle module 14 by means of the handle fixing screw 15, and the whole machine can be carried by hand by the handle module 14. The front cover 2 and the back cover 12 are respectively assembled on the front and rear sides of the housing 13, forming a protective layer for the internal functional boards, air pump 7, battery 9 and other components, ensuring that the detector can stably complete the complete workflow of gas sampling-detection-local display-on-site printing-wireless upload under the condition of hand-carrying and moving.

[0028] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A portable gas detector, characterized in that, Includes housing (13), front cover (2), back cover (12), display screen (1), LCD touch screen (3), motherboard (4), sensor board (6), air pump (7), bracket board (8), battery (9), power board (10), micro printer (11), handle module (14), handle fixing screw (15), pneumatic connector module (16), and folding antenna (17). The housing (13) is the base for supporting the whole machine. The top of the housing (13) is equipped with a handle module (14) by a handle fixing screw (15). The front cover (2) is installed at the front end of the housing (13). The display screen (1) and the LCD touch screen (3) are arranged in sequence on the inside of the front cover (2). The LCD touch screen (3) is electrically connected to the motherboard (4). The motherboard (4) is electrically connected to the sensor board (6) through a connecting wire (5). The bracket plate (8) is installed on the bottom inside the housing (13). The battery (9), air pump (7) and sensor plate (6) are fixedly installed on the bracket plate (8). The air pump (7) is connected to the gas sensor air path on the sensor plate (6) through a pipeline. The rear cover (12) is installed on the rear side of the housing (13). The power board (10) and the micro printer (11) are assembled on the inner side of the rear cover (12). The pneumatic connector module (16) and the detachable folding antenna (17) are provided on the outer side of the rear cover (12). The power board (10) is electrically connected to the battery (9), the motherboard (4) and the micro printer (11) respectively.

2. A portable gas detector according to claim 1, characterized in that, The handle module (14) is an external handle structure, which can be detachably locked to the top surface of the housing (13) by the handle fixing screw (15) for the whole machine to be carried by hand.

3. A portable gas detector according to claim 1, characterized in that, The folding antenna (17) can be detachably installed on the back cover (12). The folding antenna (17) is connected to the motherboard (4) to realize wireless data transmission.

4. A portable gas detector according to claim 1, characterized in that, The micro printer (11) is embedded in the back cover (12) and is electrically connected to the motherboard (4) for on-site printing output of gas detection data.

5. A portable gas detector according to claim 1, characterized in that, The pneumatic connector module (16) is located on the outside of the rear cover (12). The pneumatic connector module (16) is connected to the air inlet of the air pump (7) and serves as an external interface for the gas to be tested.

6. A portable gas detector according to claim 1, characterized in that, The sensor board (6) integrates multiple gas sensors, and the air pump (7) provides the pumping power to draw the external gas to be tested into the sensor detection cavity of the sensor board (6) to complete the gas detection.

7. A portable gas detector according to claim 1, characterized in that, The battery (9) and power board (10) work together to provide power to the motherboard (4), LCD touch screen (3), air pump (7), sensor board (6) and micro printer (11), enabling offline handheld operation of the equipment.

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