Portable gas leak alarm

Abstract

The application relates to the technical field of gas detection, and provides a portable gas leakage alarm. The portable gas leakage alarm comprises an alarm body, a gas inlet channel and a gas outlet channel which are arranged in a first cavity and communicate with the first cavity; the gas inlet channel and the gas outlet channel form a gas inlet and a gas outlet on the surface of the alarm body; a detection mechanism is arranged in the first cavity; a fixing mechanism is connected with the alarm body and used for fixing on a user's arm; a reminding mechanism comprises a tactile feedback assembly which is arranged on the side of the fixing mechanism facing the user's arm and is arranged to perform tactile feedback on the user's arm based on an abnormal result of the detection mechanism. The portable gas leakage alarm can effectively solve the problem of poor reminding effect of the alarm in the prior art and guarantees the personal safety of the user.

Description

Technical Field

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

[0002] In the field of food waste treatment, the decomposition and fermentation of organic matter easily produces toxic and harmful gases such as methane, hydrogen sulfide, and carbon monoxide. Therefore, leak alarms for these gases are crucial to ensuring operational safety.

[0003] However, currently available portable gas leak detectors have significant drawbacks in this scenario. Existing devices mostly use a single audible alarm mode, while the operation of machinery, garbage dumping, and vehicle movement within a food waste treatment plant generate strong environmental noise (typically reaching 80-100 decibels or even higher), making the alarm's audible signal easily masked. Simultaneously, workers exposed to high-noise environments for extended periods are prone to auditory fatigue, gradually decreasing their sensitivity to audible alarms. Even if the alarm is functioning normally, it may be ignored due to distraction or auditory desensitization, failing to detect hazardous gas leaks in time and thus delaying optimal response to dangerous situations, posing a significant safety hazard. Utility Model Content

[0004] This application provides a portable gas leak alarm to solve the problem of poor alarm effect in the prior art and to protect the personal safety of users.

[0005] According to a first aspect of this application, a portable gas leak alarm includes: The alarm body has a first cavity and an air inlet channel and an air outlet channel communicating with the first cavity; the air inlet channel and the air outlet channel form an air inlet and an air outlet on the surface of the alarm body. The testing mechanism is located in the first cavity; A fixing mechanism, connected to the main body of the alarm, is used to fix it to the user's arm; The alerting mechanism includes a tactile feedback component disposed on the side of the fixing mechanism facing the user's arm, configured to provide tactile feedback to the user's arm based on abnormal results from the detection mechanism.

[0006] According to one embodiment of this application, the fixing mechanism includes a first strap and a second strap respectively disposed at both ends of the alarm body; The free end of the first strap has a hook and loop fastener, and the free end of the second strap has a hook and loop fastener. The hook and loop fasteners engage with the hook and loop fasteners to secure the fastening mechanism to the user's arm; or... The free end of the first strap is provided with a buckle, and the free end of the second strap is provided with a snap fastener. The buckle and the snap fastener engage to secure the fixing mechanism onto the user's arm.

[0007] According to one embodiment of this application, the haptic feedback component includes an airbag that inflates and squeezes the user's arm based on an abnormal result of the detection mechanism.

[0008] According to one embodiment of this application, the reminder mechanism further includes an air pump, which is in communication with the airbag; The alarm body is also provided with a second cavity, in which the air pump is installed.

[0009] According to one embodiment of this application, the detection mechanism includes one or more of a catalytic combustion sensor, an electrochemical sensor, a semiconductor sensor, an infrared gas sensor, and a photoionization sensor.

[0010] According to one embodiment of this application, the alerting mechanism further includes a light assembly, which is arranged in a ring and surrounds the outer peripheral surface of the alarm body.

[0011] According to one embodiment of this application, the alerting mechanism further includes a buzzer connected to the alarm body.

[0012] According to one embodiment of this application, the tactile feedback component further includes a vibration module disposed on the side of the alarm body facing the user's arm.

[0013] According to one embodiment of this application, the portable gas leak alarm further includes an air intake assembly disposed at the air inlet; The air intake assembly includes an air intake head and an air intake pipe. The air intake head is connected to one end of the air intake pipe, and the other end of the air intake pipe is connected to the air intake port.

[0014] According to one embodiment of this application, the portable gas leak alarm further includes an intake fan disposed in the gas outlet channel, the intake fan being configured to drive external gas into the first cavity through the intake port.

[0015] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects: The portable gas leak alarm described in this application is linked with a detection agency. After the detection agency detects an abnormality, the tactile feedback component in the detection agency provides tactile feedback to the user's arm, thus alerting the user. By providing tactile feedback, the alarm is unaffected by ambient noise, effectively preventing users from ignoring the alarm due to environmental noise or auditory fatigue. Furthermore, the tactile feedback component is positioned between the fixed mechanism and the user's arm, ensuring its protection against wear and scratches in the working environment and guaranteeing the normal operation of the portable gas leak alarm.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying 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] Figure 1 This is a structural schematic diagram of the portable gas leak alarm provided in this application. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the portable gas leak alarm provided in this application. Figure 2 .

[0020] Figure 3 This is a structural schematic diagram of the portable gas leak alarm provided in this application. Figure 3 .

[0021] Figure 4 This is a schematic diagram of the portable gas leak alarm provided in this application. Figure 4 .

[0022] Figure 5 for Figure 4 Enlarged view of the structure of section A in the middle.

[0023] Figure label: 1. Alarm body; 11. Air inlet; 12. Air outlet; 13. Second cavity; 2. Detection mechanism; 3. Fixing mechanism; 31. First strap; 311. Velcro surface; 32. Second strap; 321. Velcro hook surface; 4. Alert mechanism; 41. Tactile feedback component; 411. Airbag; 412. Vibration module; 42. Air pump; 43. Lighting component; 44. Buzzer; 5. Air inlet component; 51. Air inlet head; 511. Through hole; 52. Air inlet pipe; 6. Air outlet pipe; 61. Air inlet fan. Detailed Implementation

[0024] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0025] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0027] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0029] A portable gas leak alarm according to an embodiment of the first aspect of this application, such as... Figures 1 to 5 As shown, the portable gas leak alarm includes: an alarm body 1, which has a first cavity and an air inlet channel and an air outlet channel communicating with the first cavity; the air inlet channel and the air outlet channel form an air inlet 11 and an air outlet 12 on the surface of the alarm body 1; a detection mechanism 2, which is disposed in the first cavity; a fixing mechanism 3, which is connected to the alarm body 1 and is used to fix it on the user's arm; and an alerting mechanism 4, which includes a tactile feedback component 41, which is disposed on the side of the fixing mechanism 3 facing the user's arm and is configured to provide tactile feedback to the user's arm based on the abnormal result of the detection mechanism 2.

[0030] It should be noted that, Figure 1 The designation 2 indicates the location of testing agency 2. In fact, testing agency 2 is located in... Figure 1 The inside of the housing at the indicated location.

[0031] Of course, a display screen and related buttons can also be installed on the main body 1 of the alarm. The display screen and related buttons can adopt the relevant settings in the existing technology, which will not be described in detail here.

[0032] The fixing mechanism 3 is connected to the alarm body 1, which can stably fix the portable gas leak alarm on the user's arm, making it convenient for the user to carry during operation. The reminder mechanism 4 includes a tactile feedback component 41 set on the side of the fixing mechanism 3 facing the user's arm. This tactile feedback component 41 is linked with the detection mechanism 2. When the detection mechanism 2 detects abnormal results such as excessively high concentration of harmful gas or the presence of specific toxic gases, the tactile feedback component 41 can generate an action based on the abnormal result of the detection mechanism 2 and remind the user's arm, conveying alarm information to the user through tactile feedback. This reminder method breaks through the limitations of traditional single-sound alarms, is not affected by noise generated by the operation of mechanical equipment or vehicles in the working environment, and effectively solves the problem of users ignoring alarm information due to auditory fatigue and distraction caused by environmental noise interference or long-term exposure to high-noise environments. It can promptly attract the user's attention through tactile stimulation when a gas leak occurs. Meanwhile, the tactile feedback component 41 is positioned between the fixing mechanism 3 and the user's arm. With the shielding and support of the fixing mechanism 3, the tactile feedback component 41 is prevented from being directly exposed to the complex external working environment, reducing the risk of wear, scratches or collisions, thereby ensuring the normal operation of the portable gas leak alarm.

[0033] In some cases, an air inlet 11 (not shown in the figure) can be provided on the upper and lower ends of the alarm body 1 to collect more and larger range of gas.

[0034] According to one embodiment of this application, such as Figures 1 to 4 As shown, the fixing mechanism 3 includes a first strap 31 and a second strap 32 respectively disposed at both ends of the alarm body 1; the free end of the first strap 31 is provided with a Velcro surface 311, and the free end of the second strap 32 is provided with a Velcro hook surface 321. The Velcro surface 311 and the Velcro hook surface 321 cooperate to make the fixing mechanism 3 fit on the user's arm; or, the free end of the first strap 31 is provided with a buckle, and the free end of the second strap 32 is provided with a snap fastener. The buckle and the snap fastener engage to make the fixing mechanism 3 fit on the user's arm.

[0035] The first strap 31 and the second strap 32 can be nylon elastic straps.

[0036] The portable gas leak alarm in this embodiment includes a fixing mechanism 3 comprising a first strap 31 and a second strap 32 respectively disposed at the left and right ends of the alarm body 1. By providing a Velcro hook 311 at the free end of the first strap 31 and a Velcro hook 321 at the free end of the second strap 32, the fixing mechanism 3 can be stably fitted onto the user's arm. When using Velcro fastening, the user can flexibly adjust the tightness of the straps according to their arm size, allowing for quick and easy donning and removal without tools. This adapts to workers of different body types and is particularly suitable for scenarios requiring frequent donning or temporary adjustments, such as emergency rescue and equipment inspection.

[0037] In some cases, a buckle can be set at the free end of the first strap 31 and a snap fastener can be set at the free end of the second strap 32. The structure of the buckle and snap fastener is mechanically locked to provide stronger fixing force, which can withstand greater external pulling force and prevent the device from falling off in violent movement or complex working environment. It is suitable for scenarios that require long-term stable wearing, such as high-altitude operations and construction sites.

[0038] By using straps symmetrically positioned at both ends of the alarm body 1, the alarm body 1 can conform to the curve of the arm, reducing swaying and displacement during wear and improving comfort and stability during use.

[0039] In practical use, the fixing mechanism 3 can also be configured as a complete elastic band structure, which is fixed to the user's arm by the elasticity of the elastic band. Alternatively, magnetic elements can be provided at the free ends of the aforementioned first strap 31 and second strap 32, and the fixation can be achieved by magnetic attraction.

[0040] Anti-slip textures and ventilation holes can also be provided on the inside of the straps. The anti-slip textures increase the friction between the straps and the arm, preventing the device from slipping due to sweat or oil on the arm; the ventilation holes improve the stuffiness during long-term wear and enhance the user experience.

[0041] According to one embodiment of this application, such as Figure 1 and Figure 4 As shown, the haptic feedback component 41 includes an airbag 411, which inflates and squeezes the user's arm based on the abnormal results of the detection mechanism 2.

[0042] The airbag 411 is made of flexible material. When deflated, it conforms to the surface of the arm without causing extra burden on the user. When a high concentration of harmful gas or the presence of specific toxic gases is detected, the airbag 411 inflates to generate physical pressure, transmitting an alarm signal to the user through tactile stimulation. This alert method is unaffected by environmental noise, effectively solving the problem of audible alarms being easily masked in high-noise working environments. It also avoids missed alarm information due to auditory fatigue or distraction, ensuring timely triggering of alerts in the event of a gas leak. Simultaneously, the airbag 411 is protected by the space between the fixing mechanism 3 and the arm, preventing direct contact with sharp objects or corrosive substances, reducing the risk of wear and scratches, and ensuring the long-term stability of the tactile feedback function.

[0043] In some cases, a pressure sensor can be integrated into the airbag 411 structure to monitor the squeezing force of the airbag 411 on the arm in real time and automatically adjust the inflation volume to adapt to the different sensitivity of different users to tactile feedback and improve the comfort of use.

[0044] For example, the haptic feedback component 41 can also employ a weak current electric shock method, stimulating the skin of the arm with electrical pulses within a safe voltage range to produce a tingling sensation. This method has a fast response speed and a clear stimulation signal, which can attract the user's attention without relying on vision or hearing, making it particularly suitable for work scenarios where the hands are busy or the view is obstructed. Alternatively, a deformable metal sheet can be used. Upon receiving an abnormal signal, the metal sheet bends or protrudes through a built-in micro-drive mechanism, mechanically deforming to contact and press the arm. Its structure is simple and durable, suitable for harsh environments with high requirements for waterproofing and dustproofing. Alternatively, a temperature-variable component can also be used as the haptic feedback component 41. By using heating or cooling elements to rapidly change the temperature of the part of the arm in contact, the alarm information is transmitted through the hot and cold stimulation generated by the temperature difference. This method can avoid the skin pressure sensation that may be caused by mechanical contact and is suitable for users with high tactile sensitivity.

[0045] According to one embodiment of this application, such as Figure 1 and Figure 3 As shown, the alerting mechanism 4 also includes an air pump 42, which is connected to the airbag 411; the alarm body 1 is also provided with a second cavity 13, in which the air pump 42 is installed. The second cavity 13 can be located at the lower part of the alarm body 1.

[0046] The air pump 42 is connected via a pipe to an airbag 411 located on the side of the fixed mechanism 3 facing the user's arm. When the detection mechanism 2 detects excessively high concentrations of harmful gases or the presence of specific toxic gases, the air pump 42 actively inflates the airbag 411, causing it to expand and compress the user's arm, transmitting alarm information through tactile feedback. The air pump 42 is installed in the second cavity 13 of the alarm body 1, which protects it from damage caused by external moisture, dust, or corrosive substances, thus extending its service life and operational stability. Simultaneously, the second cavity 13 allows for a reasonable spatial arrangement of the air pump 42, the detection mechanism 2, the air intake channel, and other components, reducing interference between functional modules and ensuring the overall compactness and reliability of the device.

[0047] The air pump 42 can be in the form of a miniature air pump to reduce its size.

[0048] In some cases, a sound insulation layer or vibration damping structure can be installed inside the second cavity 13 to reduce the noise and vibration generated when the air pump 42 is working, avoid the air pump 42 from affecting the detection accuracy of the detection mechanism 2, and improve the user's wearing experience.

[0049] For example, the air pump 42 can be replaced by a miniature compressed gas tank, which controls the gas release via a solenoid valve to quickly inflate the airbag 411. This method does not require electricity and can maintain tactile feedback function in the event of a power outage or extreme environment, improving the emergency reliability of the device. Alternatively, an abnormal signal from the detection mechanism 2 can trigger a miniature gas storage bag built into the airbag 411, thereby directly releasing the pre-stored gas into the airbag 411, simplifying the structural complexity of the inflation system and reducing manufacturing costs.

[0050] According to one embodiment of this application, the detection mechanism 2 includes one or more of a catalytic combustion sensor, an electrochemical sensor, a semiconductor sensor, an infrared gas sensor, and a photoionization sensor.

[0051] The detection mechanism 2 is located in the first cavity of the alarm body 1 and is connected to the air inlet and outlet channels, enabling real-time detection of gases in the environment through the air inlet 11 and outlet 12. A catalytic combustion sensor detects concentration by detecting changes in resistance of a resistance wire caused by the flameless combustion of combustible gases (such as methane) under the action of a catalyst, thus enabling concentration monitoring of combustible gases such as natural gas and liquefied petroleum gas. An electrochemical sensor uses the chemical reaction of gases such as hydrogen sulfide and carbon monoxide on the electrode surface to generate a current signal to determine concentration, suitable for accurate detection of toxic gases such as carbon monoxide and hydrogen sulfide. A semiconductor sensor relies on the adsorption of toxic and harmful gases to change the resistance of the semiconductor material, using the resistance change to detect gases, and can sense volatile organic compounds such as formaldehyde. An infrared gas sensor detects gases such as carbon dioxide and methane through the absorption characteristics of infrared light of specific wavelengths. A photoionization sensor can monitor low concentrations of volatile organic compounds. Multiple sensors work together to accurately detect various harmful gases. The combined application of multiple sensors enables the detection agency 2 to cover a variety of detection targets, such as combustible gases, toxic gases, and volatile organic compounds, solving the problem of limited sensor detection range. It is especially suitable for complex environments such as kitchen waste treatment plants where multiple toxic and harmful gases exist simultaneously. It can comprehensively monitor the flammability and explosion risk of methane, as well as the toxic hazards of hydrogen sulfide and carbon monoxide, improving the comprehensiveness and accuracy of gas leak detection.

[0052] In practical applications, a modular sensor design can be adopted, integrating different types of sensors into replaceable detection modules. Users can select appropriate sensor combinations according to specific operating environment requirements, improving the flexibility and maintainability of the device. A data fusion processing unit can also be added to detection mechanism 2 to comprehensively analyze detection data from multiple sensors through algorithms, reducing false alarms caused by environmental interference from a single sensor and improving the reliability of detection results.

[0053] It should be noted that the portable gas leak alarm may also include a central processing module. The central processing module is electrically connected to the detection mechanism 2 (including various sensors) and the reminder mechanism 4 (including air pump 42, buzzer 44, vibration module 412, and light assembly 43). The central processing module can analyze and process the collected data, compare the real-time detected gas concentration with the preset threshold, and if the detected gas concentration reaches or exceeds the corresponding threshold, the central processing module will automatically start the corresponding alarm program and trigger the multimodal reminder mechanism 4.

[0054] According to one embodiment of this application, such as Figure 1 and Figure 2 As shown, the alerting mechanism 4 also includes a lighting component 43, which is ring-shaped and surrounds the outer periphery of the alarm body 1. The lighting component 43 can be in the form of a running light.

[0055] The portable gas leak alarm in this embodiment includes a lighting component 43 arranged in a ring around the outer periphery of the alarm body 1. This lighting component 43 is linked to the detection mechanism 2 and provides visual alerts through flashing lights and color changes when the detection mechanism 2 detects excessively high concentrations of harmful gases or the presence of specific toxic gases. The ring-shaped lighting component 43 ensures 360-degree coverage of the area surrounding the alarm body 1, guaranteeing clear visibility of the alarm signal from different angles regardless of the user's posture or ambient lighting conditions. This is particularly suitable for dimly lit or complex work environments, such as nighttime operations in food waste treatment plants or internal equipment maintenance environments. The lighting component 43 and the tactile feedback component 41 (e.g., an airbag 411) form a multimodal alarm combination. Through the synergistic effect of visual and tactile signals, the transmission of alarm information is further enhanced, effectively avoiding potential omissions associated with single-reminder methods. In addition, the ring structure is wrapped around the outer periphery of the alarm body 1, and naturally fits the outline of the alarm body 1. It does not add any extra protruding parts, and can make full use of the surface space of the alarm body 1, so as to ensure the reminder function while maintaining the portability and aesthetics of the device.

[0056] In practical applications, a multi-color LED module can be integrated into the lighting component 43. Different colors of light can be used to distinguish the type of gas or the level of hazard. For example, red light corresponds to an alarm for flammable and explosive gases (such as methane), yellow light corresponds to an alarm for toxic gases (such as hydrogen sulfide), and green light indicates that the environment is safe. This allows users to quickly determine the type of gas leak and take appropriate measures based on the color of the light. Simultaneously, a light flashing frequency adjustment function can be set, dynamically adjusting the flashing frequency according to the gas concentration. The higher the concentration, the faster the flashing speed, achieving differentiated transmission of alarm information. For example, the surface of the lighting component 43 can also be covered with a protective material with good light transmittance and wear resistance (such as acrylic or polycarbonate). This ensures effective penetration of the light signal while preventing damage to the lighting component 43 from external impacts or corrosive substances.

[0057] According to one embodiment of this application, such as Figure 1 and Figure 3 As shown, the alerting mechanism 4 also includes a buzzer 44, which is connected to the alarm body 1.

[0058] The portable gas leak alarm in this embodiment includes a buzzer 44 connected to the alarm body 1 as the alerting mechanism 4. The buzzer 44 is linked to the detection mechanism 2 and can sound an alarm when the detection mechanism 2 detects excessively high concentrations of harmful gases or the presence of specific toxic gases. It can form a multimodal alarm combination with the tactile feedback component 41, the light component 43, etc. The buzzer 44 can attract the attention of the user and surrounding people through airborne sound signals. Especially when the user's line of sight is not focused on the alarm body 1 or the tactile feedback is not effectively perceived due to special circumstances (such as the user wearing protective clothing), the sound alert can supplement the alarm information from an auditory perspective, improving the comprehensiveness of the alarm system.

[0059] The buzzer 44 is directly connected to the alarm body 1, featuring a compact structure and easy integration. It utilizes the outer shell of the alarm body 1 to form a sound propagation channel, enhancing the directionality and clarity of the sound. By working in conjunction with tactile feedback, flashing lights, and other alerting methods, the buzzer 44 can function effectively in various environmental conditions. For example, in well-lit open environments, the dual alert of sound and light strengthens the warning effect; in noisy environments, tactile feedback compensates for potential masking of sound, forming a comprehensive alarm system covering hearing, vision, and touch, effectively reducing the risk of missed alarms.

[0060] In practical applications, a tone adjustment module can be integrated into the buzzer 44 to distinguish gas types or hazard levels through sound signals of different frequencies or rhythms. For example, a high-frequency short tone corresponds to an alarm for flammable and explosive gases, while a low-frequency long tone corresponds to an alarm for toxic gases, allowing users to quickly determine the type of hazard through sound characteristics. Simultaneously, the buzzer 44 can be configured with an automatic volume adjustment function, dynamically adjusting the sound intensity according to the ambient noise level. In high-noise environments, the volume can be automatically increased to ensure the sound signal is identifiable, while in low-noise environments, the volume can be decreased to avoid interference, enhancing the intelligent adaptability of the alarm system. For example, a waterproof and breathable membrane can also be installed on the outside of the buzzer 44 to prevent moisture and dust from entering the alarm body 1 while ensuring effective transmission of the sound signal, thus enhancing the durability of the buzzer 44 in harsh environments such as humid and dusty conditions.

[0061] According to one embodiment of this application, such as Figure 4 and Figure 5 As shown, the tactile feedback component 41 also includes a vibration module 412, which is disposed on the side (i.e., the inner side) of the alarm body 1 facing the user's arm. The vibration module 412 may be in the form of a bone conduction oscillator, and multiple bone conduction oscillators may be configured.

[0062] The vibration module 412 is linked with the detection mechanism 2. When the detection mechanism 2 detects that the concentration of harmful gas is too high or that a specific toxic gas is present, it can generate mechanical vibration and act on the user's arm through bone conduction to transmit alarm information in the form of tactile feedback.

[0063] The positional design of the vibration module 412 allows vibration energy to be transmitted directly through the contact interface between the alarm body 1 and the arm, forming a clear tactile stimulus. It is especially suitable for complex working environments with high noise, strong light, or obstructed vision, and can effectively avoid the problem of missed alarm information due to environmental interference.

[0064] When vibration alerts work in conjunction with tactile feedback methods such as airbag compression (411), different vibration frequencies, intensities, or patterns can distinguish gas types or hazard levels. For example, high-frequency short vibrations correspond to flammable and explosive gas alarms, while low-frequency long vibrations correspond to toxic gas alarms, allowing users to quickly identify hazard types through tactile differences without visual inspection. Simultaneously, the vibration module (412) is integrated into the side of the alarm body 1 that contacts the arm. The structural design of the alarm body 1 provides physical protection, reducing damage to the vibration module (412) from external dust, moisture, or mechanical impacts, ensuring stable operation of the tactile feedback function.

[0065] The vibration module 412 can be in the form of a flexible vibrating plate. The flexible vibrating plate can better fit the curve of the arm, improve the comfort of wearing for a long time, and adapt to the lightweight and flexible design trend of the alarm body 1.

[0066] The vibration module 412 is linked with the lighting unit 43, buzzer 44, airbag 411 and other reminder units to form a multimodal alarm system of "vibration + light + sound + squeeze". The superposition of multiple sensory signals enhances the transmission effect of alarm information. For example, the vibration triggers the flashing of lights, the sound of buzzer 44 and the squeezing of the arm by airbag 411. It is suitable for high-risk environments that require all-round warning.

[0067] According to one embodiment of this application, such as Figures 1 to 5 As shown, the portable gas leak alarm also includes an air intake assembly 5 disposed at the air inlet 11; the air intake assembly 5 includes an air intake head 51 and an air intake pipe 52, the air intake head 51 is connected to one end of the air intake pipe 52, and the other end of the air intake pipe 52 is connected to the air inlet 11.

[0068] The air inlet head 51 and air inlet pipe 52 are designed to guide ambient gas into the first cavity of the alarm body 1 efficiently, ensuring that the detection mechanism 2 can collect and analyze the gas in real time. The air inlet head 51 can be cylindrical, with through holes 511 on the outer circumferential surface and top surface for ambient gas to enter.

[0069] The air intake head 51 can also be designed into other specific shapes (such as a trumpet shape) according to the usage scenario. By increasing the gas collection area, the air intake efficiency can be improved, allowing external gas to enter the air intake port 11 more smoothly through the air intake pipe 52. It is especially suitable for environments where gas diffusion is slow or flow is complex, such as areas in kitchen waste treatment plants where organic matter decomposes and ferments to produce gas.

[0070] The connection design between the air intake component 5, the air inlet 11, and the air outlet 12 forms a complete gas flow path, enabling the detection mechanism 2 to continuously acquire environmental gas samples and ensuring the continuity and reliability of the detection process.

[0071] In practical applications, a detachable filter unit can be installed inside the air inlet head 51. The filter unit can be a filter screen or a filter element. The filter screen or filter element can intercept impurities such as dust and droplets in the gas, preventing contaminants from entering the first cavity and affecting the sensitivity and service life of the detection mechanism 2. The filter unit can be designed as a quick-release structure, which is convenient for users to clean or replace regularly.

[0072] According to one embodiment of this application, such as Figure 1 and Figure 2 As shown, the portable gas leak alarm also includes an intake fan 61 disposed in the gas outlet channel, and the intake fan 61 is disposed close to the gas outlet 12; the intake fan 61 is configured to drive external gas into the first cavity through the gas inlet 11.

[0073] In some cases, an air outlet pipe 6 can be installed on the main body 1 of the alarm, and the channel inside the air outlet pipe 6 is connected to the channel inside the main body 1 of the alarm to form a complete air outlet channel. An intake fan 61 can be installed in the air outlet pipe 6.

[0074] The intake fan 61 drives external gas into the first chamber through the intake port 11, forming a forced gas flow path through active air delivery, significantly improving the transmission efficiency of ambient gas to the detection mechanism 2. The intake fan 61 changes the traditional passive diffusion gas collection mode, making it particularly suitable for complex environments with poor gas flow and uneven concentration distribution (such as the organic matter decomposition and fermentation area in a food waste treatment plant). It can quickly draw the target gas into the first chamber, shortening the response time of the detection mechanism 2 and avoiding detection lag caused by slow natural gas diffusion.

[0075] With the continuous operation of the intake fan 61, the gas in the first chamber can be dynamically updated, ensuring that the sample obtained by the detection mechanism 2 is real-time and representative, and effectively improving the accuracy and reliability of gas concentration detection.

[0076] The portable gas leak alarm provided in this application embodiment, when used in practice: by pulling the first strap 31 and the second strap 32, the hook side 321 and the loop side 311 of the Velcro are glued together and bound to the worker's arm, making the alarm body 1 easy to carry. At the same time, the bone conduction vibrator (vibration module 412) and the two sets of airbags 411 are attached to the arm. During operation, the intake fan 61 is activated, and external air enters the intake pipe 52 through the through holes 511 around and above the intake head 51. It then flows into the air chamber (first cavity) inside the alarm body 1. The sensor group inside the air chamber includes a catalytic combustion sensor, an electrochemical sensor, and a semiconductor sensor to detect toxic and harmful gases such as methane, hydrogen sulfide, and carbon monoxide in the gas and transmits the data to the central processing module. When the detected gas concentration exceeds the preset safety threshold, the central processing module simultaneously activates the multimodal alert mechanism 4, causing the running light (light assembly 43) to flash at high frequency to emit a visual warning; the buzzer 44 emits a penetrating alarm sound; multiple sets of bone conduction vibrators generate continuous pulse vibrations on the arm; at the same time, the micro air pump 42 inflates the airbags 411 inside the first strap 31 and the second strap 32 through the connecting pipe, causing them to expand and squeeze the arm. This can alert the staff from multiple dimensions of vision, hearing, and touch, enabling the staff to discover the problem in time and deal with it. The detected gas is finally discharged through the exhaust channel.

[0077] The portable gas leak alarm provided in this application embodiment adopts an air inlet head 51 design with multiple through holes 511 to form a multi-directional air intake channel. When the air intake fan 61 is started, external air is quickly introduced into the air intake channel through the air inlet head 51 and then enters the first cavity. During this process, the sensor group in the detection mechanism 2 can detect toxic and harmful gases such as methane, hydrogen sulfide, and carbon monoxide in real time. After the detection is completed, the gas is discharged through the gas outlet channel, effectively improving the gas collection efficiency.

[0078] The portable gas leak alarm provided in this application embodiment adopts a multimodal intelligent reminder mechanism 4. Through a double-strap ergonomic structure, the alarm body 1 is securely attached to the sensing area of ​​the worker's arm. When the ambient gas concentration exceeds the safety threshold, a four-fold warning mechanism is activated simultaneously: a running light (i.e., light component 43) flashes at high frequency to form a visual warning, a buzzer 44 emits a penetrating alarm sound, a bone conduction vibrator (i.e., vibration module 412) generates continuous pulse vibration through bone conduction, and an airbag 411 quickly inflates to form a wrap-around pressure feedback on the arm. This multi-dimensional, multi-sensory collaborative warning method, compared with the traditional single-sound alarm, can effectively overcome problems such as noisy environment interference, visual blind spots, and distraction, ensuring that the wearer can quickly perceive danger through multiple channels such as vision, hearing, and touch, significantly improving emergency response efficiency and providing comprehensive protection for safe production.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should be covered within the scope of the claims of this application.

Claims

1. A portable gas leak alarm, characterized in that, include: The alarm body (1) is provided with a first cavity and an air inlet channel and an air outlet channel communicating with the first cavity; the air inlet channel and the air outlet channel form an air inlet (11) and an air outlet (12) on the surface of the alarm body (1). The detection mechanism (2) is located in the first cavity; The fixing mechanism (3) is connected to the main body (1) of the alarm and is used to fix it on the user's arm; The reminder mechanism (4) includes a tactile feedback component (41), which is disposed on the side of the fixing mechanism (3) facing the user's arm and is configured to provide tactile feedback to the user's arm based on the abnormal result of the detection mechanism (2); the tactile feedback component (41) includes an airbag (411), which inflates and squeezes the user's arm based on the abnormal result of the detection mechanism (2).

2. The portable gas leak alarm according to claim 1, characterized in that, The fixing mechanism (3) includes a first strap (31) and a second strap (32) respectively disposed at both ends of the alarm body (1); The free end of the first strap (31) is provided with a hook and loop fastener (311), and the free end of the second strap (32) is provided with a hook and loop fastener (321). The hook and loop fastener (311) and the hook and loop fastener (321) cooperate to allow the fixing mechanism (3) to be fitted onto the user's arm; or, The free end of the first strap (31) is provided with a buckle, and the free end of the second strap (32) is provided with a buckle. The buckle and the buckle engage to make the fixing mechanism (3) fit on the user's arm.

3. The portable gas leak alarm according to claim 1, characterized in that, The reminder mechanism (4) also includes an air pump (42), which is connected to the airbag (411); The alarm body (1) is also provided with a second cavity (13), and the air pump (42) is installed in the second cavity (13).

4. The portable gas leak alarm according to claim 1, characterized in that, The detection mechanism (2) includes one or more of the following: catalytic combustion sensor, electrochemical sensor, semiconductor sensor, infrared gas sensor, and photoionization sensor.

5. The portable gas leak alarm according to claim 1, characterized in that, The reminder mechanism (4) also includes a light assembly (43), which is arranged in a ring and is wrapped around the outer peripheral surface of the alarm body (1).

6. The portable gas leak alarm according to claim 1, characterized in that, The reminder mechanism (4) also includes a buzzer (44) which is connected to the alarm body (1).

7. The portable gas leak alarm according to claim 1, characterized in that, The tactile feedback component (41) also includes a vibration module (412) disposed on the side of the alarm body (1) facing the user's arm.

8. The portable gas leak alarm according to any one of claims 1 to 7, characterized in that, It also includes an air intake assembly (5) disposed at the air intake (11); The air intake assembly (5) includes an air intake head (51) and an air intake pipe (52). The air intake head (51) is connected to one end of the air intake pipe (52), and the other end of the air intake pipe (52) is connected to the air intake port (11).

9. The portable gas leak alarm according to any one of claims 1 to 7, characterized in that, It also includes an intake fan (61) disposed in the air outlet channel, the intake fan (61) being configured to drive external gas into the first cavity through the air inlet (11).

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