Dropable gas sensor

Abstract

The jettisonable gas sensor comprises a jettisonable unmanned aerial vehicle and a controller, the bottom of the controller is fixedly connected with a jettisonable device, the jettisonable device comprises a fixing plate and a rotating shaft rotationally connected to the fixing plate, and the fixing plate is rotationally connected with the controller through the rotating shaft; two limiting holes are formed in the bottom of the fixing plate, electric push rods are arranged in the two limiting holes, and connecting mechanisms are fixedly connected to the bottoms of the two limiting holes; the effect of accurately detecting gas information is achieved through the buffering mechanism, when the damping mechanism falls to the ground, the buffering air bag absorbs impact energy, a movable rod in the buffering air bag moves to drive related parts to eject the parachute, an air inlet or a sensing part of the detection mechanism is prevented from being covered, and effective contact between a sensor and external gas is guaranteed; therefore, gas information is accurately converted into electric signals, accurate detection is realized after processing, and reliable data is provided for mastering on-site gas conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of throwable gas sensors, in particular to a throwable gas sensor. Background Art

[0002] In many complex and dangerous operation and monitoring scenarios, the demand for accurate and rapid detection of gas composition and concentration in specific areas has become increasingly prominent, and throwable gas sensors have emerged. Traditional gas detection methods often rely on personnel to carry equipment into the scene or fixed monitoring devices. However, in places such as fire scenes, chemical leak accident areas, narrow and difficult-to-enter spaces (such as ventilation ducts, deep underground mine tunnels, etc.) and dangerous outdoor environments (such as swamps with toxic gas emissions), personnel directly enter and face huge life safety risks, and fixed devices cannot be flexibly deployed to key locations. In addition, some temporary emergency monitoring scenarios, such as the detection of gas indicators related to airborne pathogens in specific areas during public health emergencies, and safety early warning monitoring around large gathering places, require the rapid establishment of a gas monitoring network and do not have the conditions for pre-installation of fixed equipment on a large scale. Throwable gas sensors, with their small size, lightness, and easy to carry and throw characteristics, can quickly reach the target area with the help of drones, robots or manual throwing, detect multiple gases in real time and accurately, and transmit data back through wireless transmission, providing indispensable technical support for timely grasping the on-site gas conditions, making scientific decisions, ensuring personnel safety and environmental monitoring.

[0003] However, most of the existing throwable gas sensors are not equipped with a pop-up parachute mechanism. During the throwing operation, a parachute is generally used to assist in enhancing the stability and reliability of the sensor. However, when the parachute fails to pop out and moves away from the sensor, it often covers the air inlet or sensing part of the sensor, or falls near the air inlet or sensing part of the sensor, thereby blocking the effective contact between the gas and the sensor, making it impossible for the sensor to accurately capture gas information. The detection work is forced to be interrupted, which seriously reduces the detection efficiency. Moreover, this coverage situation not only causes the failure of a single detection task, but also creates a great obstacle to subsequent recycling and reuse. During recycling, extra effort is required to deal with the entanglement problem of the parachute and the sensor, and the sensor may even be damaged due to improper handling, further increasing the cost of use and waste of resources. This is far from meeting the current urgent need for efficient, accurate and sustainable gas monitoring technology.

[0004] To this end, a throwable gas sensor is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a throwable gas sensor to solve the problem raised in the above background technology that when the parachute fails to pop up and move away from the sensor, it often covers the air inlet or sensing part of the sensor, which directly blocks the effective contact between the gas and the sensor, making it impossible for the sensor to accurately capture gas information, and the detection work is forced to be interrupted, which seriously reduces the detection efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a throwable gas sensor, comprising a throwable drone and a controller, wherein the bottom of the controller is fixedly connected with a throwable device. The throwable device comprises a fixed plate and a rotating shaft rotatably connected to the fixed plate, and the fixed plate is rotatably connected to the controller through the rotating shaft, two limiting holes are provided at the bottom of the fixed plate, and electric push rods are arranged inside the two limiting holes, the bottoms of the two limiting holes are fixedly connected with a connecting mechanism, and the two limiting holes are detachably connected with a shock absorbing mechanism through the connecting mechanism;

[0007] The shock absorbing mechanism comprises a device housing, the top four ends of the device housing are fixedly connected with a detection mechanism for detecting gas, the four ends of the device housing are fixedly connected with a micro air pump, and the bottom of the device housing is fixedly connected with a buffer air bag for shock absorption, the inside of the device housing is opened and closed with an air channel matching the micro air pump and the buffer air bag, the inside of the device housing is also provided with a limit assembly matching the connection mechanism, and the top of the device housing is fixedly connected with a buffer mechanism;

[0008] The buffer mechanism includes an outer tube fixed on the device shell, the inner movement of the outer tube is movably connected to a movable rod through an elastic component, and the movable rod is fixedly connected to the inside of the buffer airbag, so that the movable rod moves upward when the buffer airbag contacts the ground, the inner part of the outer tube is also movably connected to a limiting rod through a limiting rod, and a support component for resetting is fixedly connected between the limiting rod and the inner side of the outer tube, and the inner part of the outer tube is detachably connected to a limiting plate, a storage component is fixedly connected to the limiting plate, a parachute for buffering is fixedly connected to the inside of the storage component, and the limiting plate is matched with the limiting rod, so that the parachute is ejected from the inner part of the outer tube when the movable rod moves upward.

[0009] Preferably, the four ends of the device housing are fixedly connected with exhaust ports for fine-tuning the landing position, and the exhaust ports are electrically connected to an adjustment system inside the device housing so as to adjust the landing position by changing the exhaust port angle.

[0010] Preferably, a rubber pad for sealing is fixedly connected to the outer side of the exhaust port, so that when the exhaust port is closed, the gas flows to the buffer airbag through the airway.

[0011] Preferably, the detection mechanism comprises a detection shell fixed on the device shell, and a plurality of air holes are provided on the outer side of the detection shell for gas to enter, a sensor is arranged inside the detection shell, and the sensor is electrically connected to the electric control system inside the device shell.

[0012] Preferably: the connecting mechanism includes a fixed shell, and the fixed shell is movably connected to a straight rod inside, a support rod for limiting is provided on the straight rod, and the support rod matches the inside of the fixed shell, and the straight rod is fixedly connected to an elastic component 2 for support near the bottom of the support rod.

[0013] Preferably, a slot matching the position limiting assembly is formed at the bottom of the straight rod, and the position limiting assembly comprises a torsion spring insert so that the position limiting assembly and the slot are engaged and fixed with each other.

[0014] Preferably: the fixed shell is also fixedly connected to the bottom of the device shell so that the throwing drone can throw multiple sensors at the same time, and a push button is fixedly connected to the upper end of the straight rod so that the buffer airbag expands and squeezes the straight rod to unlock the limit assembly and the slot.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention realizes the effect of accurately detecting gas information through the buffer mechanism. When the shock absorbing mechanism lands, the buffer airbag absorbs the impact energy, and the internal movable rod moves, driving the relevant components to eject the parachute, avoiding covering the air inlet or sensing part of the detection mechanism, ensuring the effective contact between the sensor and the external gas, thereby accurately converting the gas information into an electrical signal, and realizing accurate detection after processing, providing reliable data for mastering the gas conditions on site;

[0017] 2. The present invention achieves the effect of stable landing and position fine-tuning through the exhaust port and the controller. During the falling process of the shock absorbing mechanism, the micro air pump works, and the controller controls the exhaust direction and angle of the exhaust port according to the preset algorithm, and fine-tunes the position of the equipment to keep it in a stable vertical landing state, and can accurately land at the target position. At the same time, the rubber pad on the outside of the exhaust port ensures airtightness, ensures that the gas flows along the preset path, ensures the stability of the inflation state of the cushioning airbag, and further enhances the landing stability;

[0018] 3. The present invention achieves the effect of flexible multi-sensor deployment and separation through the connection mechanism. The fixed shell is connected to the bottom of the device shell, the straight rod is matched with the fixed shell through the support rod, supported by the elastic component, the bottom card slot is engaged with the limit component to connect the shock absorbing mechanism and the throwing device, the staff presses the button on the upper end of the straight rod to reconnect multiple shock absorbing mechanisms, squeezes the straight rod to unlock the connection when the buffer airbag expands, and separates multiple device shells under the action of the torsion spring of the limit component, and cooperates with the exhaust port angle adjustment to enable multiple sensors to reach the specified positions respectively, meet different monitoring needs, and improve the flexibility and adaptability of sensor deployment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a disassembled diagram of the throwing device of the present invention;

[0021] Figure 3 It is a schematic diagram of the working state of the multi-stage delivery of the shock absorbing mechanism of the present invention;

[0022] Figure 4 A three-dimensional diagram of the shock absorbing mechanism and the buffering mechanism of the present invention;

[0023] Figure 5 It is the overall position schematic diagram of the present invention;

[0024] Figure 6 is a cross-sectional perspective view of the shock absorbing mechanism of the present invention;

[0025] Figure 7 is a cross-sectional schematic diagram of the buffer mechanism of the present invention;

[0026] Figure 8 It is a disassembled diagram of the connecting mechanism of the present invention.

[0027] In the figure:

[0028] 1. Throwing drone; 2. Controller;

[0029] 3. Throwing device; 31. Fixing plate; 32. Rotating shaft; 33. Limiting hole;

[0030] 4. shock absorbing mechanism; 41. equipment housing; 42. micro air pump; 43. exhaust port; 44. airway; 45. cushioning airbag; 46. limit assembly;

[0031] 5. Buffer mechanism; 51. Outer tube; 52. Movable rod; 53. Elastic component 1; 54. Limiting falcon; 55. Support component; 56. Limiting rod; 57. Limiting plate; 58. Storage component; 59. Parachute;

[0032] 6. Detection mechanism; 61. Detection housing; 62. Sensor;

[0033] 7. Connecting mechanism; 71. Fixed housing; 72. Straight rod; 73. Press button; 74. Support rod; 75. Elastic component 2; 76. Card slot. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 8 , the present invention provides a technical solution for a throwable gas sensor:

[0036] A throwable gas sensor comprises a throwable drone 1 and a controller 2, wherein a throwable device 3 is fixedly connected to the bottom of the controller 2. The throwable device 3 comprises a fixing plate 31 and a rotating shaft 32 rotatably connected to the fixing plate 31, and the fixing plate 31 is rotatably connected to the controller 2 via the rotating shaft 32, two limiting holes 33 are provided at the bottom of the fixing plate 31, and electric push rods are arranged inside the two limiting holes 33, the bottoms of the two limiting holes 33 are fixedly connected to a connecting mechanism 7, and the two limiting holes 33 are detachably connected to a shock absorbing mechanism 4 via the connecting mechanism 7;

[0037] The shock absorbing mechanism 4 comprises a device housing 41, the top four ends of the device housing 41 are fixedly connected with a detection mechanism 6 for detecting gas, the four ends of the device housing 41 are fixedly connected with a micro air pump 42, and the bottom of the device housing 41 is fixedly connected with a buffer air bag 45 for shock absorption, the inside of the device housing 41 is opened and closed with an air channel 44 matching the micro air pump 42 and the buffer air bag 45, the inside of the device housing 41 is also provided with a limit assembly 46 matching the connection mechanism 7, and the top of the device housing 41 is fixedly connected with a buffer mechanism 5;

[0038] The buffer mechanism 5 includes an outer tube 51 fixed on the equipment housing 41, and the inner movement of the outer tube 51 is movably connected to a movable rod 52 through an elastic component 53, and the movable rod 52 is fixedly connected to the inside of the buffer airbag 45, so that the movable rod 52 moves upward when the buffer airbag 45 contacts the ground, and the inner part of the outer tube 51 is also movably connected to a limiting rod 54 through a limiting rod 56, and a support component 55 for resetting is fixedly connected between the limiting rod 54 and the inner side of the outer tube 51, and the inner part of the outer tube 51 is detachably connected to a limiting plate 57, and a storage component 58 is fixedly connected to the limiting plate 57, and a parachute 59 for buffering is fixedly connected to the storage component 58, and the limiting plate 57 is matched with the limiting rod 54, so that the parachute 59 is ejected from the inner part of the outer tube 51 when the movable rod 52 moves upward.

[0039] During operation, the throwing drone 1 carries the entire throwable gas sensor system and flies to the sky above the target area. It is stably connected to the controller 2 through the fixing plate 31 via the rotating shaft 32. The electric push rods in the two limiting holes 33 at the bottom of the fixing plate 31 are in an initial non-working state. The fixed shell 71 of the connecting mechanism 7 is firmly fixed to the bottom of the device shell 41. The straight rod 72 is supported by the elastic force of the elastic component 75 and is tightly matched with the inner wall of the fixed shell 71 through the support rod 74. It is in a stable limited state. The card slot 76 at the bottom of the straight rod 72 is precisely engaged with the limiting component 46 (torsion spring plug) inside the device shell 41 to ensure that the shock absorbing mechanism 4 is tightly connected to the throwing device 3 and will not fall off accidentally. At the same time, the detection mechanism 6 at the four ends of the top of the device shell 41 is ready, the air holes on the outside of the detection shell 61 are unobstructed, the internal sensor 62 is in standby state, and is connected with the detection mechanism 6 at the top of the device shell 41. The internal adjustment system of the device housing 41 establishes a stable telecommunication connection. The micro air pumps 42 at the four ends of the device housing 41 inflate an appropriate amount of air into the airway 44 according to the preset program, so that the buffer airbag 45 maintains a certain pre-inflation pressure, which can provide initial buffering during throwing without affecting the stability of the overall structure. In the buffer mechanism 5, the movable rod 52 inside the outer tube 51 is in the lowest position under the initial elastic force of the elastic component 53, and is firmly connected to the inside of the buffer airbag 45. The limit falcon 54, supported by the support component 55, tightly presses against the limit plate 57 to ensure that the parachute 59 in the storage component 58 is in a fully stored state and will not pop out accidentally. The rubber pad on the outside of the exhaust port 43 fits tightly to ensure that the exhaust port 43 is in a fully closed state. The gas can only flow in the airway 44 according to the preset path to ensure that the inflation state of the buffer airbag 45 is stable.

[0040] When the shock absorbing mechanism 4 lands on the ground, the cushioning airbag 45 first contacts the ground. The impact force of the ground causes the cushioning airbag 45 to be rapidly compressed and deformed. The gas inside the cushioning airbag 45 is squeezed, and the pressure increases, which effectively absorbs most of the impact energy and reduces the impact force on the device housing 41 and its internal components. At the same time, the movable rod 52 in the cushioning airbag 45 is subjected to the reaction force from the ground and begins to move upward. When the movable rod 52 moves upward, it compresses the elastic component 1 53, and the elastic component 1 53 stores elastic potential energy and generates an upward reaction force. The reaction force is transmitted to the limit falcon 54 through the movable rod 52, so that the limit falcon 54 overcomes the elastic force of the support assembly 55 and moves outward, gradually breaking away from the contact with the limit plate 57. When the limit falcon 54 is completely free from the restriction of the limit plate 57, the parachute 59 in the storage assembly 58 quickly pops outward under the action of its own gravity and air resistance, and then the parachute 59 pops up from the inside of the outer tube 51, which can avoid the parachute 59 covering the air inlet or sensing part of the detection mechanism 6, thereby ensuring the smooth progress of the gas detection work.

[0041] As an embodiment of the present invention, Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the four ends of the device housing 41 are fixedly connected with exhaust ports 43 for fine-tuning the landing position, and the exhaust ports 43 are electrically connected to the adjustment system inside the device housing 41, so as to adjust the landing position by changing the angle of the exhaust ports 43. A rubber pad for sealing is fixedly connected to the outer side of the exhaust ports 43, so that when the exhaust ports 43 are closed, the gas flows to the buffer airbag 45 through the airway 44. The detection mechanism 6 includes a detection housing 61 fixed on the device housing 41, and a plurality of air holes are opened on the outer side of the detection housing 61 for facilitating the entry of gas. A sensor 62 is arranged inside the detection housing 61, and the sensor 62 is electrically connected to the electric control system inside the device housing 41.

[0042] During operation, when the throwing drone 1 reaches the designated throwing point above the target area, the controller 2 receives the throwing command and immediately starts the electric push rod of the throwing device 3. The electric push rod quickly extends, pushing the straight rod 72 in the connecting mechanism 7 to overcome the elastic force of the elastic component 2 75 and move downward. As the straight rod 72 moves downward, the support rod 74 on the straight rod 72 gradually disengages from the limiting cooperation with the inner wall of the fixed shell 71. At the same time, the card slot 76 at the bottom of the straight rod 72 gradually separates from the limiting component 46 (torsion spring plug) in the device shell 41 until the connection relationship is completely released, thereby releasing the shock absorbing mechanism 4 from the throwing device 3. 4 starts to fall freely under the action of gravity, and the parachute 59 inside the outer tube 51 pops out, while making the device always try to maintain a vertical posture when landing. During the falling process, the micro air pumps 42 at the four ends of the device housing 41 continue to work, and their working state is accurately controlled by the adjustment system inside the device housing 41 according to the preset posture adjustment algorithm. The position of the device is fine-tuned again by adjusting the exhaust direction and angle of the exhaust port 43. (With the help of advanced sensor technologies such as high-precision gyroscopes and inclination sensors, the rotation speed, tilt angle and other posture information of the device are obtained in real time. The sensor converts this information into electrical signals. The signal is transmitted to the adjustment system through the pre-laid signal transmission line. After receiving the signal, the adjustment system starts the built-in attitude adjustment algorithm, compares and calculates the real-time attitude data with the preset ideal vertical landing attitude. If the equipment attitude deviates, the algorithm determines the thrust required to correct the deviation at the specific exhaust port based on the physical model and control strategy, and then calculates the gas flow and pressure value that the micro air pump should deliver, and generates a control instruction. The instruction is transmitted to the micro air pump through the signal line, and the drive motor is adjusted according to the instruction to control the gas to be discharged from the exhaust port. If the equipment needs to correct its attitude to the left front, the micro air pump delivers specific gas to the right exhaust port to produce a reaction. The force pushes the device to adjust. In this way, the real-time fine adjustment of the device's posture in the air is achieved to ensure that it maintains a vertical descent and accurately reaches the predetermined position) so that the device can land at a more precise position and maintain a relatively stable falling state. When the position adjustment is completed, the exhaust port 43 is closed, and the gas of the micro air pump 42 is inflated into the cushion airbag 45 through the airway 44. During this period, the exhaust port 43 is always kept closed under the sealing effect of the rubber pad to prevent gas leakage from the exhaust port 43, ensuring that all gas flows to the cushion airbag 45, so that the cushion airbag 45 is filled with gas.

[0043] After landing, the detection mechanisms 6 at the four ends of the device housing 41 begin to work formally. Under the action of natural diffusion, the external gas enters the detection housing 61 through the pores on the outside of the detection housing 61. The entered gas is in full contact with the sensor 62. The sensor 62 converts information such as gas composition and concentration into electrical signals according to the physical or chemical properties of different gases. These electrical signals are transmitted to the electronic control system inside the device housing 41 through pre-laid lines. After receiving the electrical signal from the sensor 62, the electronic control system immediately starts the data processing program to perform a series of processing operations such as amplification, filtering, and analog-to-digital conversion on the signal, and converts the original signal into a digital signal that can be analyzed and transmitted. Then, the electronic control system stores the processed data in the local memory according to the preset data storage format and strategy, and sends the data to the remote receiving end, such as the server of the command center or the mobile terminal of the staff, through the built-in wireless transmission module (such as Wi-Fi, Bluetooth, 4G / 5G, etc.). The remote receiving end can display and analyze the gas conditions in the target area in real time to provide accurate data support for decision-making.

[0044] As an embodiment of the present invention, Figure 2 Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, the connecting mechanism 7 includes a fixed shell 71, and the interior of the fixed shell 71 is movably connected with a straight rod 72, a support rod 74 for limiting is arranged on the straight rod 72, and the support rod 74 matches the interior of the fixed shell 71, and the straight rod 72 is fixedly connected with an elastic component 75 for support near the bottom of the support rod 74, and a slot 76 matching the limiting component 46 is provided at the bottom of the straight rod 72, and the limiting component 46 includes a torsion spring insert so that the limiting component 46 and the slot 76 are engaged and fixed with each other, and the fixed shell 71 is also fixedly connected to the bottom of the equipment shell 41 so that the throwing drone 1 can throw multiple sensors 62 at the same time, and a press button 73 is fixedly connected to the upper end of the straight rod 72 so that the buffer airbag 45 expands and squeezes the straight rod 72 to unlock the limiting component 46 and the slot 76.

[0045] When working, the staff first finds the specific position of the sensor 62 according to the position information sent by the positioning module (such as GPS module) in the device housing 41. When it is necessary to release multiple shock absorbing mechanisms 4 to an area, the staff manually presses the push button 73 at the upper end of the straight rod 72. After the push button 73 is pressed, the straight rod 72 is pushed downward again. During the downward movement, the card slot 76 at the bottom of the straight rod 72 engages with the limit assembly 46 (torsion spring plug) in the device housing 41, so that the shock absorbing mechanism 4 is firmly connected with the throwing device 3 again. Then, multiple shock absorbing mechanisms 4 are combined together through the connecting mechanism 7. When the buffer airbag 45 is filled, the buffer airbag 45 will squeeze the two straight rods 72 at the bottom of the device housing 41, so that the straight rod 72 moves downward, and then the straight rod 72 and the limit assembly 46 are unlocked. Under the action of the torsion spring inside the limit assembly 46, the tenon on the limit assembly 46 is disengaged from the slot 76 at the bottom of the straight rod 72, so that the multiple device housings 41 are separated, and then the angle of the exhaust port 43 is adjusted so that multiple devices can reach the specified position.

[0046] Working principle: When working, the throwing drone 1 carries the sensor system and flies to the target area. At this time, the connecting mechanism 7 ensures that the shock absorbing mechanism 4 is tightly connected to the throwing device 3, the detection mechanism 6 is on standby, the micro air pump 42 keeps the buffer airbag 45 pre-inflated, the parachute 59 in the buffer mechanism 5 is stored, and the exhaust port 43 is closed. After receiving the throwing command, the controller 2 starts the electric push rod to push the straight rod 72 downward, so that the shock absorbing mechanism 4 is separated from the throwing device 3 and starts to fall freely. At the same time, the parachute 59 pops out, and the equipment keeps falling vertically. During the fall, the micro air pump 42 keeps the pre-inflated airbag 45 pre-inflated, and the parachute 59 pops out. The air pump 42 works continuously, and the adjustment system adjusts the exhaust direction and angle of the exhaust port 43 according to the algorithm to fine-tune the position, so that the equipment can land more accurately and stably. After the position is adjusted, the exhaust port 43 is closed, and the gas is filled into the cushion airbag 45. When landing, the cushion airbag 45 contacts the ground and compresses and deforms to absorb the impact energy. The movable rod 52 moves upward to make the limit falcon 54 separate from the limit plate 57, and the parachute 59 pops out to avoid covering the air inlet or sensing part of the detection mechanism 6. Subsequently, the detection mechanism 6 works, and the external gas enters through the air hole and contacts the sensor 62. Four detection shells 61 are arranged on the device shell 41, so when it is necessary to detect multiple gases simultaneously in different scenarios, the sensor 62 inside the detection shell 61 can be replaced with a toxic and harmful gas detection sensor (for detecting carbon monoxide, hydrogen sulfide, ammonia, chlorine and nitrogen dioxide, etc.), a combustible gas detection sensor (for detecting methane, propane and hydrogen, etc.) and an environmental gas detection sensor (for detecting carbon dioxide, ozone and volatile organic compounds, etc.). Different sensors 62 are changed according to actual usage conditions to increase the application field and use range of the device. The sensor converts gas information into an electrical signal and transmits it to the controller 2. The controller processes the signal and stores it and sends it to the remote receiving end through the wireless transmission module to realize real-time monitoring of the gas condition in the target area. If multiple shock absorbing mechanisms 4 need to be deployed, press the push button 73 on the upper end of the straight rod 72 to connect the shock absorbing mechanism 4 with the throwing device 3 again. After the buffer airbag 45 is full, squeeze the straight rod 72 to unlock the straight rod 72 and the limit assembly 46. The multiple device shells 41 are separated, and then the exhaust port 43 angle is adjusted to make the device reach the specified position.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A throwable gas sensor, comprising a throwable drone (1) and a controller (2), characterized in that: The bottom of the controller (2) is fixedly connected with a throwing device (3). The throwing device (3) comprises a fixing plate (31) and a rotating shaft (32) rotatably connected to the fixing plate (31), and the fixing plate (31) is rotatably connected to the controller (2) via the rotating shaft (32). The bottom of the fixing plate (31) is provided with two limiting holes (33), and the insides of the two limiting holes (33) are both provided with electric push rods. The bottoms of the two limiting holes (33) are fixedly connected with a connecting mechanism (7), and the two limiting holes (33) are detachably connected with a shock absorbing mechanism (4) via the connecting mechanism (7); The shock absorbing mechanism (4) comprises a device housing (41), the top four ends of the device housing (41) are all fixedly connected with a detection mechanism (6) for detecting gas, the four ends of the device housing (41) are fixedly connected with a micro air pump (42), and the bottom of the device housing (41) is fixedly connected with a buffer air bag (45) for shock absorption, the inside of the device housing (41) is opened and closed with an air channel (44) matching the micro air pump (42) and the buffer air bag (45), the inside of the device housing (41) is also provided with a limit assembly (46) matching the connection mechanism (7), and the top of the device housing (41) is fixedly connected with a buffer mechanism (5); The buffer mechanism (5) comprises an outer tube (51) fixed on the device housing (41); the inner part of the outer tube (51) is movably connected to a movable rod (52) through an elastic component (53); and the movable rod (52) is fixedly connected to the inner part of the buffer airbag (45), so that the movable rod (52) moves upward when the buffer airbag (45) contacts the ground; the inner part of the outer tube (51) is also movably connected to a limit position rod (54) through a limit rod (56); and the limit position rod (54) is fixedly connected to the inner part of the buffer airbag (45), so that the movable rod (52) moves upward when the buffer airbag (45) contacts the ground. 4) and the inner side of the outer tube (51) are fixedly connected with a support assembly (55) for resetting, and a limit plate (57) is detachably connected inside the outer tube (51), a storage assembly (58) is fixedly connected to the limit plate (57), a parachute (59) for buffering is fixedly connected inside the storage assembly (58), and the limit plate (57) matches with the limit falcon (54) so ​​that the parachute (59) is ejected from the inner side of the outer tube (51) when the movable rod (52) moves upward.

2. The throwable gas sensor according to claim 1, characterized in that: The four ends of the device housing (41) are fixedly connected with exhaust ports (43) for fine-tuning the landing position, and the exhaust ports (43) are electrically connected to an adjustment system inside the device housing (41) so as to adjust the landing position by changing the angle of the exhaust ports (43).

3. The throwable gas sensor according to claim 2, characterized in that: A rubber pad for sealing is fixedly connected to the outer side of the exhaust port (43), so that when the exhaust port (43) is closed, gas flows to the buffer airbag (45) through the air passage (44).

4. The throwable gas sensor according to claim 1, characterized in that: The detection mechanism (6) comprises a detection housing (61) fixed on the device housing (41), and a plurality of air holes are provided on the outer side of the detection housing (61) for facilitating the entry of gas. A sensor (62) is provided inside the detection housing (61), and the sensor (62) is electrically connected to an electric control system inside the device housing (41).

5. The throwable gas sensor according to claim 1, characterized in that: The connecting mechanism (7) comprises a fixed shell (71), and a straight rod (72) is movably connected inside the fixed shell (71), a support rod (74) for limiting position is arranged on the straight rod (72), and the support rod (74) matches the inside of the fixed shell (71), and a second elastic component (75) for supporting is fixedly connected to the straight rod (72) near the bottom of the support rod (74).

6. The throwable gas sensor according to claim 5, characterized in that: A slot (76) matching the limit assembly (46) is provided at the bottom of the straight rod (72), and the limit assembly (46) includes a torsion spring insert so that the limit assembly (46) and the slot (76) are engaged and fixed with each other.

7. The throwable gas sensor according to claim 5, characterized in that: The fixed housing (71) is also fixedly connected to the bottom of the device housing (41) so that the throwing drone (1) can throw multiple sensors simultaneously, and a pressing button (73) is fixedly connected to the upper end of the straight rod (72) so that the buffer airbag (45) expands and squeezes the straight rod (72) to unlock the limit assembly (46) and the card slot (76).

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