Handheld gas detection terminal

Abstract

The invention relates to the technical field of gas detection, in particular to a handheld gas detection terminal which comprises an instrument shell, a screen module is arranged on the surface of the instrument shell, and a signal receiver is fixedly connected to the top end of the instrument shell; the handheld assembly comprises an elastic belt and two fixing plates, the elastic belt surrounds the two fixing plates to form an inner side part and an outer side part, and the sides, close to each other, of the inner side part and the outer side part are fixedly connected; the gas inlet assembly is arranged on the back face of the instrument shell and comprises a gas inlet shell and a sensor array, the sensor array is arranged in the gas inlet shell, gas inlets corresponding to the sensor array are formed in the outer surface of the gas inlet shell, and the gas inlets are arranged in an array mode. According to the invention, while synchronous detection of multiple gases is realized, holding comfort and instrument operation stability are ensured, detection delay or errors caused by unstable holding and insufficient gas inlet are effectively avoided, and operation efficiency and reliability in a complex or long-time working environment are improved.

Description

Technical Field

[0001] This application relates to the field of gas detection technology, and in particular to a handheld gas detection terminal. Background Technology

[0002] Portable gas detection terminals are widely used in industrial production, mining operations, emergency rescue, environmental monitoring, and other fields to detect and alarm on the concentration of toxic, harmful, or flammable gases in the air in real time. These terminals typically include an instrument housing with a screen module to visually present the detection data to the user.

[0003] However, in existing technologies, most gas detection devices are designed to monitor a single target gas, equipped with only a single type of detection unit, and have a relatively simple arrangement of air inlets to match the number of detection channels. Therefore, it is difficult to effectively monitor multiple gases simultaneously in a single operation. Furthermore, although they are handheld, most rely solely on gripping the outer casing for operation, lacking auxiliary fixing components. This can easily cause hand fatigue and affect operational stability during prolonged or mobile detection.

[0004] In existing technologies, gas detection devices rely solely on the operator's fingers and palm for direct gripping. This not only requires significant grip strength during operation but also makes the device prone to shifting during detection, affecting the uniform intake of external gas by the air intake assembly. Therefore, a new technical solution is urgently needed to address the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a handheld gas detection terminal to solve the technical problem mentioned in the background art that the flattening height of existing wire thickness cannot be adjusted at any time during processing.

[0006] To achieve this objective, the present application adopts the following technical solution: A handheld gas detection terminal, comprising: The instrument housing has a screen module on its surface and a signal receiver fixedly connected to its top. A handheld assembly includes an elastic band and two fixing plates. The two fixing plates are fixedly connected to the back of the instrument housing and are spaced apart by a preset distance. The elastic band surrounds the two fixing plates to form an inner side and an outer side. The inner side and the outer side are fixedly connected to each other on their closest sides. An air intake assembly is disposed on the back of the instrument housing. The air intake assembly includes an air intake housing and a sensor array. The sensor array is disposed inside the air intake housing. The outer surface of the air intake housing is provided with air intake ports corresponding to the sensor array. The air intake ports are arranged in an array.

[0007] Furthermore, the sensor array includes a circular sensor unit and multiple square sensor units, which are arranged vertically and spaced apart within the air intake housing.

[0008] Furthermore, a function button is fixedly connected to the side of the instrument housing, and a camera module is fixedly installed on the back. The camera module includes multiple cameras, which are electrically connected to the sensor array. The function buttons include a power button, a mode switching button, and an emergency button.

[0009] Furthermore, the surface of the instrument housing is provided with protective and auxiliary mechanisms; The protective mechanism includes a protective cover, which is disposed on the surface of the instrument housing. The auxiliary mechanism includes a second fixing block, which is fixedly connected to the surface of the protective cover. A hanging rope is fixedly connected to the surface of the second fixing block. A second connecting block is fixedly connected to the surface of the protective cover, and the hanging rope is movable inside the second connecting block.

[0010] Furthermore, the protective mechanism also includes a first fixing block, which is fixedly connected to the surface of the instrument housing. A sliding groove is provided on the inner side of the first fixing block, and a slider is movably connected to the inner side of the sliding groove. The end of the slider away from the sliding groove is fixedly connected to the protective cover.

[0011] Furthermore, an insert block is movably connected to the inner side of the first fixing block, and a first connecting block is fixedly connected to the surface of the insert block. The insert blocks are arranged in two groups and movably connected to the first fixing block, and the two groups of insert blocks are correspondingly connected to the first connecting block. A first spring is fixedly connected to the surface of the first connecting block.

[0012] Furthermore, one end of the first spring is fixedly connected to the first fixing block, and the other end of the first spring is fixedly connected to the first connecting block, and a slot is provided on the inner side of the slider.

[0013] Furthermore, the auxiliary mechanism also includes a rotating rod, which is movably connected to the inner side of the second connecting block, and the rotating rod is movably connected to the protective cover; The end of the hanging rope away from the second fixing block is fixedly connected to the rotating rod, and the hanging rope is wrapped around the rotating rod.

[0014] Furthermore, a gear is fixedly connected to the surface of the rotating rod, the gear is movable inside the second connecting block, a movable rod is movably connected to the inner side of the second connecting block, and a second spring is fixedly connected to the surface of the movable rod.

[0015] Furthermore, one end of the second spring is fixedly connected to the second connecting block, and the other end of the second spring is fixedly connected to the movable rod.

[0016] Compared with the prior art, this application has the following beneficial effects: This application provides a handheld gas detection terminal. By incorporating a handheld assembly including an elastic band and two fixing plates, it provides stable support by conforming to the back of the operator's hand during use. This reduces hand pressure and alleviates fatigue from prolonged holding, while also maintaining stability and preventing slippage during movement or bumpy environments, thus avoiding impact on air intake accuracy due to unstable posture. Furthermore, by setting an air intake assembly on the back of the instrument housing, including an air intake shell and a sensor array, and forming a honeycomb-shaped air intake corresponding to the sensor array on the outer surface of the air intake shell, it can uniformly and fully draw in external gas from multiple directions and positions. This significantly improves the representativeness of gas sampling and the accuracy of detection results. Simultaneously, the honeycomb structure provides a larger air intake area and multiple gas inflow paths, enabling the sensor array to detect multiple gases simultaneously. This fundamentally overcomes the limitation of existing technologies that can only detect a single gas, significantly improving the overall functionality and user experience of portable gas detection terminals. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0019] Figure 1 This is a schematic diagram of the overall structure of a handheld gas detection terminal according to this application; Figure 2 For this application Figure 1 Enlarged structural diagram at point A; Figure 3 This is a partial structural diagram of a handheld gas detection terminal according to this application; Figure 4 This is a schematic diagram of the auxiliary mechanism structure of a handheld gas detection terminal according to this application; Figure 5 This is a side-view exploded view of the auxiliary mechanism structure of a handheld gas detection terminal according to this application; Figure 6 This is a front view and exploded cross-sectional view of the structure of the instrument shell and the first fixing block of a handheld gas detection terminal according to this application; Figure 7 For this application Figure 6 Enlarged structural diagram at point B; Figure 8 This is a side-view exploded schematic diagram of the slider and protective cover of a handheld gas detection terminal according to this application; Figure 9 For this application Figure 8 Enlarged structural diagram at point C; Figure 10 This is a side-view, cross-sectional, exploded schematic diagram of the structure of the lanyard and gears of a handheld gas detection terminal according to this application. Figure 11 This application discloses a front view and exploded cross-sectional view of the structure of the gears and movable rod of a handheld gas detection terminal.

[0020] Illustration: 1. Instrument housing; 11. Screen module; 12. Signal receiver; 13. Camera module; 15. Function buttons; 2. First fixing block; 21. Slide groove; 22. Slider; 23. Protective cover; 24. Insert block; 25. First connecting block; 26. First spring; 27. Slot; 3. Second fixing block; 31. Hanging rope; 32. Second connecting block; 33. Rotating rod; 34. Gear; 35. Movable rod; 36. Second spring; 4. Air intake assembly; 41. Air intake housing; 411. Air intake port; 42. Sensor array; 421. Circular sensor unit; 422. Square sensor unit; 5. Handheld assembly; 51. Elastic band; 511. Inner side; 512. Outer side; 52. Fixing plate. Detailed Implementation

[0021] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0023] The technical solution of this application will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] In one embodiment, please refer to Figures 1 to 11 A handheld gas detection terminal includes an instrument housing 1, on the surface of which a screen module 11 is provided, and a signal receiver 12 is fixedly connected to the top of the instrument housing 1; a handheld assembly 5, which includes an elastic band 51 and two fixing plates 52, both of which are fixedly connected to the back of the instrument housing 1 and are spaced apart by a preset distance; the elastic band 51 surrounds the two fixing plates 52 to form an inner side 511 and an outer side 512, and the inner side 511 and the outer side 512 are fixedly connected to each other on their adjacent sides; and an air intake assembly 4, which is disposed on the back of the instrument housing 1, including an air intake shell 41 and a sensor array 42, the sensor array 42 being disposed inside the air intake shell 41, and the outer surface of the air intake shell 41 being provided with air inlets 411 corresponding to the sensor array 42, the air inlets 411 being arranged in an array.

[0025] In this embodiment, a screen module 11 is provided on the surface of the instrument housing 1, and a signal receiver 12 is fixedly connected to the top of the housing. The screen module 11 allows the user to intuitively read the detection results, such as gas concentration or other environmental parameters. The screen module 11 is touch-operable, allowing for various command inputs on the screen, such as starting detection, switching detection modes, and viewing historical data, thus improving ease of use. The signal receiver 12 can be an RTK antenna (Real-Time Kinematic antenna) used to receive satellite signals and transmit them to the detection terminal. The base station antenna receives the same satellite signals, calculates the error, and generates differential correction data, which is then transmitted to the mobile station via radio or network. After receiving this data, the mobile station's RTK antenna performs real-time calculations based on its own received satellite signals, outputting high-precision location information. The signal receiver 12 is fixed to the top of the housing, resulting in better signal reception and stable acquisition of positioning and synchronization information in complex environments, ensuring the accuracy and time synchronization of the detection data. It also avoids obstruction by the handheld part during operation, thus ensuring the stability of signal transmission. The handheld component 5 includes an elastic band 51 and two fixing plates 52. The fixing plates 52 are fixedly connected to the back of the instrument housing 1 and spaced at a preset distance. The elastic band 51 surrounds the two fixing plates 52 to form an inner part 511 and an outer part 512, and the inner part 511 and the outer part 512 are fixedly connected to each other on the side closest to each other. The combination of the elastic band 51 and the fixing plates 52 forms a flexible grip structure. Compared with the rigid handles or fixed grips commonly found in existing gas detection terminals, this elastic band 51 design is significantly innovative. The way the elastic band 51 surrounds allows the user to insert their hand into the space between the inner part 511 and the housing, achieving a stable grip through the elastic force of the elastic band 51, while adapting to the needs of users with different hand shapes or palm sizes. The fixed connection of the fixing plates 52 to the back of the instrument housing 1, as well as the preset distance setting, ensures the stability and tension distribution of the elastic band 51, avoiding loosening or deformation caused by prolonged use. The air intake assembly 4 is located on the back of the instrument housing 1, and includes an air intake shell 41 and a sensor array 42. The sensor array 42 detects gases in the environment. The air intake ports 411 of the array significantly increase the gas collection area and uniformity. Compared to designs with a single or few air intake ports, this structure allows gas to enter the housing more efficiently, thus ensuring full contact with the sensor array 42. As the core of the detection process, the sensor array 42 can analyze various gas components. The honeycomb design of the air intake ports 411 ensures rapid inflow and uniform distribution of gas samples, thereby improving detection sensitivity and response speed.

[0026] In summary, this application achieves simultaneous detection of multiple gases while ensuring comfortable grip and stable instrument operation. It effectively avoids detection delays or errors caused by unstable grip or insufficient gas intake, and improves operational efficiency and reliability in complex or long-term working environments. As a result, it significantly improves the shortcomings of portable gas detection terminals in terms of functionality and user experience, and has comprehensive advantages such as comprehensive detection, easy portability, and stable use over a long period of time.

[0027] In one embodiment, the sensor array 42 includes a circular sensor unit 421 and a plurality of square sensor units 422. The circular sensor unit 421 and the plurality of square sensor units 422 are arranged vertically and spaced apart within the air intake housing 41. The sensor array 42 is used to detect different gas concentrations.

[0028] In this embodiment, the sensor array 42 specifically includes a circular sensor unit 421 and multiple square sensor units 422. These sensor units are vertically arranged and spaced apart within the air intake housing 41. The combination of the circular sensor unit 421 and the square sensor units 422 enables efficient detection of different types of gases, such as combustible gases, oxygen, carbon monoxide, or hydrogen sulfide. Through vertical arrangement and spaced distribution, the sensor array 42 ensures that when gas enters through the air intake port 411, it uniformly contacts each sensor unit, thereby improving detection sensitivity and accuracy. This layout not only fully utilizes the internal space of the air intake housing 41 but also avoids mutual interference between sensors, ensuring that each sensor unit can operate independently and efficiently. The difference in shape between circular and square units is related to the need to detect different gas properties. For example, when circular units are used to detect combustible gases, they can better adapt to the uniformity of gas diffusion and improve the detection coverage. When square units are used to detect gases such as oxygen, carbon monoxide, or hydrogen sulfide, their regular shape helps to more accurately capture changes in the concentration of gas molecules. This structural design enables handheld gas detection terminals to achieve accurate detection of multiple gases in complex environments.

[0029] In one embodiment, a function button 15 is fixedly connected to the side of the instrument housing 1, and a camera module 13 is fixedly installed on the back. The camera module 13 includes multiple cameras, which are electrically connected to the sensor array 42. The function button 15 includes a power button, a mode switching button, and an emergency button.

[0030] In this embodiment, the function buttons 15 and the camera module 13 on the back are fixedly connected. The function buttons 15 include a power button, a mode switching button, and an emergency button. These buttons are designed to allow users to easily control the power switch of the detection terminal, switch between different detection modes, and quickly trigger alarm or emergency call functions in emergencies. The camera module 13 on the back contains multiple cameras electrically connected to the sensor array 42. These cameras can combine detected gas data with visual information to further enhance the functionality of the detection terminal. For example, the cameras can record images or videos of the detection site, assisting users in analyzing the source of gas leaks or environmental conditions. The electrical connection between the camera module 13 and the sensor array 42 means that they can work together. For example, by comprehensively analyzing the image data from the camera module 13 and the gas concentration data detected by the sensors, more comprehensive environmental information can be provided. The combination of the function buttons 15 and the camera module 13 allows users to efficiently control the equipment and obtain multi-dimensional detection information during operation.

[0031] In one embodiment, the surface of the instrument housing 1 is provided with a protective mechanism and an auxiliary mechanism; the protective mechanism includes a protective cover 23, which is disposed on the surface of the instrument housing 1; the auxiliary mechanism includes a second fixing block 3, which is fixedly connected to the surface of the protective cover 23; a hanging rope 31 is fixedly connected to the surface of the second fixing block 3; and a second connecting block 32 is fixedly connected to the surface of the protective cover 23, with the hanging rope 31 movable inside the second connecting block 32.

[0032] In this embodiment, the protective mechanism includes a protective cover 23, which is disposed on the surface of the instrument housing 1 to protect the screen module 11 from external scratches or impacts. The auxiliary mechanism includes a second fixing block 3 fixed to the surface of the protective cover 23, with a lanyard 31 fixedly connected to the second fixing block 3. The lanyard 31 is movably connected via a second connecting block 32. This design makes the testing terminal more convenient to carry and use, while also effectively protecting the equipment. The protective cover 23 prevents the screen module 11 from being worn or scratched by external forces during carrying or storage, thereby extending the service life of the screen module 11. The lanyard 31, connected to the second fixing block 3 and the second connecting block 32, allows users to easily hang the testing terminal on their wrist or neck, enhancing portability. This design, combining protection and assistance, improves the durability of the testing terminal and makes it more practical in field or complex working environments. For example, in industrial sites or emergency rescue scenarios, users can use the lanyard 31 to secure the equipment to their body to prevent it from falling, while the protective cover 23 protects the screen, ensuring the displayed data is clearly visible.

[0033] In one embodiment, the protective mechanism further includes a first fixing block 2, which is fixedly connected to the surface of the instrument housing 1. A groove 21 is provided on the inner side of the first fixing block 2, and a slider 22 is movably connected to the inner side of the groove 21. The end of the slider 22 away from the groove 21 is fixedly connected to the protective cover 23.

[0034] In this embodiment, a first fixing block 2 is fixed to the surface of the instrument housing 1. A groove 21 is provided inside the first fixing block 2, and a slider 22 is movably connected within the groove 21. The end of the slider 22 away from the groove 21 is fixedly connected to a protective cover 23. The cooperation between the slider 22 and the groove 21 enables flexible installation and removal of the protective cover 23. When the screen module 11 needs protection, the user can slide the slider 22 into the groove 21, allowing the protective cover 23 to cover the screen, effectively preventing damage to the screen from dust, scratches, or other external factors. When the screen module 11 needs to be used, the user can remove the protective cover 23 by sliding the slider 22; the operation is simple and efficient. The movable connection design between the groove 21 and the slider 22 ensures the stability of the protective cover 23 while also guaranteeing its detachability, allowing the user to quickly adjust the device status as needed in different scenarios. This structure not only enhances the practicality of the protective cover 23 but also achieves a balance between portability and protective function, making it particularly suitable for handheld gas detection terminals used in mobile or harsh environments.

[0035] In one embodiment, an insert block 24 is movably connected to the inner side of the first fixing block 2, and a first connecting block 25 is fixedly connected to the surface of the insert block 24. The insert blocks 24 are arranged in two groups and movably connected to the first fixing block 2, and the two groups of insert blocks 24 are correspondingly connected to the first connecting block 25. A first spring 26 is fixedly connected to the surface of the first connecting block 25.

[0036] In this embodiment, a first connecting block 25 is fixedly connected to the surface of the insert 24. The insert 24 is divided into two groups and is movably connected to the first fixed block 2, with each group of inserts 24 corresponding to the first connecting block 25. A first spring 26 is fixedly connected to the surface of the first connecting block 25. Through the elastic action of the first spring 26, the insert 24 can move flexibly inside the first fixed block 2, allowing the insert 24 to engage or disengage from the slot 27 on the slider 22, thereby fixing or removing the protective cover 23. Specifically, when the user needs to cover the protective cover 23, the insert 24 engages with the slot 27 under the rebound force of the first spring 26, ensuring that the protective cover 23 is securely covering the screen module 11. When the user needs to remove the protective cover 23, the user can pull the first connecting block 25 to separate the insert 24 from the slot 27, thereby releasing the slider 22 and facilitating the removal of the protective cover 23. This locking mechanism, achieved through a spring and insert 24, is not only easy to operate but also ensures the stability of the protective cover 23 in the closed state, preventing accidental detachment. This design enhances the functionality of the protective mechanism, making it easier for users to protect and use the screen module 11 during operation.

[0037] In one embodiment, one end of the first spring 26 is fixedly connected to the first fixing block 2, and the other end of the first spring 26 is fixedly connected to the first connecting block 25, and a slot 27 is provided on the inner side of the slider 22.

[0038] In this embodiment, one end of the first spring 26 is fixedly connected to the first fixing block 2, and the other end is fixedly connected to the first connecting block 25. A slot 27 is provided inside the slider 22. Through the elastic action of the first spring 26 and the cooperation of the slot 27, the slider 22 is fixed within the slide groove 21. When the insert 24 is inserted into the slot 27, the slider 22 is locked within the slide groove 21, and the protective cover 23 can securely cover the screen module 11, providing dust and scratch protection. The first spring 26 ensures smooth insertion and removal of the insert 24, while providing sufficient rebound force so that the insert 24 can automatically reset and tightly engage with the slot 27. The advantage of this structure lies in its simple and efficient locking mechanism; users can install or remove the protective cover 23 with a simple push-pull operation. The design of the slot 27 further enhances the stability of the protective cover 23. Even when the device moves or vibrates, the protective cover 23 remains fixed, preventing it from falling off due to accidental impact. This design provides reliable protection for the handheld gas detection terminal in complex environments.

[0039] In one embodiment, the auxiliary mechanism further includes a rotating rod 33, which is movably connected to the inner side of the second connecting block 32, and the rotating rod 33 is movably connected to the protective cover 23; the end of the hanging rope 31 away from the second fixing block 3 is fixedly connected to the rotating rod 33, and the hanging rope 31 is wrapped around the rotating rod 33.

[0040] In this embodiment, the rotating rod 33 is movably connected to the inner side of the second connecting block 32 and movably connected to the protective cover 23. The end of the hanging rope 31 away from the second fixed block 3 is fixedly connected to the rotating rod 33, and the hanging rope 31 is wound around the rotating rod 33. This design achieves the winding and unwinding of the hanging rope 31 by rotating the rotating rod 33. Users can adjust the length of the hanging rope 31 as needed, thereby hanging the detection terminal on their wrist or neck, enhancing portability. For example, during field operations or mobile detection, users can adjust the length of the hanging rope 31 by pulling the hanging rope 31 or rotating the rotating rod 33 to make the device fit their wearing needs more closely. The movable connection between the rotating rod 33 and the protective cover 23 ensures the flexibility of the hanging rope 31 during use. At the same time, the design of the hanging rope 31 being wound around the rotating rod 33 avoids the hanging rope 31 becoming messy, making it easy to store and making it more convenient to carry the detection terminal, especially suitable for users who need to move frequently in different locations. The mobility of the rotating rod 33 and the winding and unwinding function of the hanging rope 31 together enhance the practicality of the auxiliary mechanism, providing users with a more flexible and convenient user experience.

[0041] In one embodiment, a gear 34 is fixedly connected to the surface of the rotating rod 33, the gear 34 is movable inside the second connecting block 32, a movable rod 35 is movably connected to the inner side of the second connecting block 32, and a second spring 36 is fixedly connected to the surface of the movable rod 35.

[0042] In this embodiment, a gear 34 is fixedly connected to the surface of a rotating rod 33, and a movable rod 35 engages with the gear 34. The gear 34 moves inside the second connecting block 32, and the movable rod 35 is also movably connected to the inside of the second connecting block 32. A second spring 36 is fixedly connected to the surface of the movable rod 35. The rotation of the rotating rod 33 is controlled by the engagement of the gear 34 and the movable rod 35. When the user pulls the movable rod 35, the movable rod 35 disengages from the gear 34, releasing the gear 34 from its restraint, allowing the rotating rod 33 to rotate freely, thus enabling the lanyard 31 to be extended or retracted. When the user releases the movable rod 35, the movable rod 35 resets under the restoring force of the second spring 36, re-engages with the gear 34, restricts the rotation of the rotating rod 33, and fixes the lanyard 31 to the desired length. This mechanism makes the length adjustment of the lanyard 31 more precise and flexible, allowing the user to quickly adjust the length of the lanyard 31 according to actual needs, such as selecting a suitable length for different wearing scenarios. The design of the gear 34 and the movable rod 35 not only simplifies operation but also ensures the stability of the hanging rope 31 during use, preventing changes in length due to accidental pulling. This design further enhances the practicality of the auxiliary mechanism and the user experience.

[0043] In one embodiment, one end of the second spring 36 is fixedly connected to the second connecting block 32, and the other end of the second spring 36 is fixedly connected to the movable rod 35.

[0044] In this embodiment, one end of the second spring 36 is fixedly connected to the second connecting block 32, and the other end is fixedly connected to the movable rod 35. This design achieves automatic reset of the movable rod 35 through the elastic action of the second spring 36. When the user pulls the movable rod 35 to release the limit on the gear 34, the second spring 36 is stretched; after releasing the movable rod 35, the rebound force of the second spring 36 causes the movable rod 35 to quickly return to its initial position and engage with the teeth of the gear 34, thereby limiting the rotation of the rotating rod 33 and fixing the length of the hanging rope 31. This reset mechanism ensures the stability of the hanging rope 31 during use and avoids the hanging rope 31 becoming loose or too long due to accidental rotation of the rotating rod 33. The setting of the second spring 36 also enhances the convenience of operation. The user can simply pull the movable rod 35 to adjust the length of the hanging rope 31 without additional locking operations. This design simplifies the user's operation steps while ensuring functionality, making the handheld gas detection terminal more efficient when carried and used. The cooperation between the second spring 36 and the movable rod 35 provides a reliable control mechanism for the auxiliary mechanism, meeting the user's wearing needs in different scenarios.

[0045] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A handheld gas detection terminal, characterized in that, include: The instrument housing (1) has a screen module (11) on its surface and a signal receiver (12) fixedly connected to its top. The handheld assembly (5) includes an elastic band (51) and two fixing plates (52). The two fixing plates (52) are fixedly connected to the back of the instrument housing (1) and are spaced apart by a preset distance. The elastic band (51) surrounds the two fixing plates (52) to form an inner side (511) and an outer side (512). The inner side (511) and the outer side (512) are fixedly connected to each other on the side closest to each other. An air intake assembly (4) is disposed on the back of the instrument housing (1). The air intake assembly (4) includes an air intake housing (41) and a sensor array (42). The sensor array (42) is disposed inside the air intake housing (41). The outer surface of the air intake housing (41) is provided with an air intake port (411) corresponding to the sensor array (42). The air intake ports are arranged in an array.

2. The handheld gas detection terminal according to claim 1, characterized in that, The sensor array (42) includes a circular sensor unit (421) and a plurality of square sensor units (422). The circular sensor unit (421) and the plurality of square sensor units (422) are arranged vertically and distributed at intervals within the air intake housing (41). The sensor array (42) is used to detect different gas concentrations.

3. A handheld gas detection terminal according to claim 1, characterized in that, The instrument housing (1) has a function button (15) fixedly connected to its side, and a camera module (13) is fixedly installed on its back. The camera module (13) includes multiple cameras, which are electrically connected to the sensor array. The function buttons (15) include a power switch button, a mode switch button, and an emergency button.

4. A handheld gas detection terminal according to claim 1, characterized in that, The surface of the instrument housing (1) is provided with protective and auxiliary mechanisms; The protective mechanism includes a protective cover (23), which is disposed on the surface of the instrument housing (1). The auxiliary mechanism includes a second fixing block (3), which is fixedly connected to the surface of the protective cover (23). A hanging rope (31) is fixedly connected to the surface of the second fixing block (3). A second connecting block (32) is fixedly connected to the surface of the protective cover (23), and the hanging rope (31) moves inside the second connecting block (32).

5. A handheld gas detection terminal according to claim 4, characterized in that, The protective mechanism also includes a first fixing block (2), which is fixedly connected to the surface of the instrument housing (1). A sliding groove (21) is provided on the inner side of the first fixing block (2), and a slider (22) is movably connected to the inner side of the sliding groove (21). The end of the slider (22) away from the sliding groove (21) is fixedly connected to the protective cover (23).

6. A handheld gas detection terminal according to claim 5, characterized in that, The inner side of the first fixing block (2) is movably connected to the insert block (24), and the surface of the insert block (24) is fixedly connected to the first connecting block (25). The insert block (24) is in two groups and movably connected to the first fixing block (2), and the two groups of insert blocks (24) are correspondingly connected to the first connecting block (25). The surface of the first connecting block (25) is fixedly connected to the first spring (26).

7. A handheld gas detection terminal according to claim 6, characterized in that, One end of the first spring (26) is fixedly connected to the first fixing block (2), and the other end of the first spring (26) is fixedly connected to the first connecting block (25). The inner side of the slider (22) is provided with a slot (27).

8. A handheld gas detection terminal according to claim 4, characterized in that, The auxiliary mechanism also includes a rotating rod (33), which is movably connected to the inner side of the second connecting block (32), and the rotating rod (33) is movably connected to the protective cover (23); The end of the hanging rope (31) away from the second fixing block (3) is fixedly connected to the rotating rod (33), and the hanging rope (31) is wrapped around the rotating rod (33).

9. A handheld gas detection terminal according to claim 8, characterized in that, A gear (34) is fixedly connected to the surface of the rotating rod (33). The gear (34) moves inside the second connecting block (32). A movable rod (35) is movably connected to the inside of the second connecting block (32). A second spring (36) is fixedly connected to the surface of the movable rod (35).

10. A handheld gas detection terminal according to claim 9, characterized in that, One end of the second spring (36) is fixedly connected to the second connecting block (32), and the other end of the second spring (36) is fixedly connected to the movable rod (35).

Images