Individual-soldier intelligent monitoring equipment for potential danger in confined space based on Internet of Things

Abstract

The invention provides an individual soldier intelligent monitoring device for potential hazards in a closed space based on the Internet of Things, and relates to the technical field of monitoring equipments.The control mainboard is fixedly connected to the upper end of the detection equipment body, and a power switch is arranged at the end, close to the control mainboard, of the outer surface of the detection equipment body; the end, close to the power switch, of the outer surface of the detection equipment body is fixedly connected with a camera, the end, close to the camera, of the outer surface of the detection equipment body is fixedly connected with three state display lamps, and the end, close to the three state display lamps, of the outer surface of the detection equipment body is fixedly connected with a spotlight. According to the intelligent safety helmet, the functions of harmful gas detection, video monitoring, illumination and the like are integrated through the control mainboard connected to the upper end of the detection equipment main body and a plurality of intelligent button components, so that the technical upgrade of a traditional safety helmet is realized, the diversity of the functions of the safety helmet is improved, and an operator can obtain more comprehensive and real-time safety guarantee when working in a closed space.

Description

Technical Field

[0001] The present invention belongs to the technical field of monitoring equipment, and more specifically, particularly relates to a single-soldier intelligent monitoring equipment for potential hazards in confined spaces based on the Internet of Things. Background Art

[0002] The existence of single-soldier intelligent monitoring equipment for potential hazards in confined spaces based on the Internet of Things is of great significance. In many fields such as industry, construction, and rescue, people often need to enter confined spaces for operations. However, these spaces often have various potential hazards. This kind of monitoring equipment can obtain various key data of the operators in the confined space in real time and accurately, providing strong support for ensuring their life safety. Its application scenarios are extensive, including underground pipeline maintenance, mine operations, chemical storage tank maintenance, tunnel construction, and emergency rescue, etc. The current devices usually require the following technologies in practical applications: 1. High-precision gas detection sensors that can sensitively and accurately detect various toxic, harmful, flammable, and explosive gases; 2. Advanced positioning and navigation technologies to ensure accurate positioning of the operator's location even in signal-free confined environments; 3. Powerful data transmission and communication technologies to ensure real-time and stable transmission of monitoring data to the background; 4. High-performance processors to quickly process and analyze the collected data.

[0003] Currently, to realize the functions of single-soldier intelligent monitoring equipment for potential hazards in confined spaces based on the Internet of Things, various devices, methods, and usage methods are adopted. Some use miniature cameras built into the helmet to capture the images in the confined space in real time and transmit them to the background. Others are equipped with communication headsets and microphones on the helmet to facilitate voice communication between the operator and the outside world.

[0004] First of all, there is a prominent problem in the above methods. To make the helmet more comfortable to wear, when wearing the helmet, the staff often leaves a certain gap in the tightening strap to avoid the strap fitting the face for a long time and reducing comfort. However, in case of a collision, the strap cannot be tightened to make the helmet firmly fit on the head. Once a collision occurs, the helmet is likely to shift due to the gap, unable to effectively protect the key parts of the head, thus increasing the severity of injury.

[0005] Secondly, most of the monitoring equipment is often of an integrated structure and cannot separate the helmet from the monitoring equipment. Once a part of the monitoring equipment fails, the entire equipment needs to be disassembled and repaired, which is complex in operation, increasing the difficulty and time cost of maintenance. And since the helmet or some components of the monitoring equipment cannot be replaced separately, if one part is damaged, it may be necessary to replace the whole, resulting in increased costs.

[0006] In view of this, the existing structures and deficiencies are studied and improved to provide a single-soldier intelligent monitoring device for potential dangers in confined spaces based on the Internet of Things, with the aim of achieving a more practical value. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a single-soldier intelligent monitoring device for potential dangers in confined spaces based on the Internet of Things to solve the above problems.

[0008] A single-soldier intelligent monitoring device for potential dangers in confined spaces based on the Internet of Things includes a helmet body. A detection device main body is snap-connected to the outer surface of the helmet body. A buckle tightening strap is sleeved inside the helmet body. A driving motor is fixedly connected inside the helmet body. A disc is sleeved on the outer surface of the driving motor. The disc is rotatably connected inside the helmet body. A crank connecting rod type plug rod is rotatably connected inside the disc. A sleeve is fixedly connected to the lower end of the detection device main body. A rotating ring is rotatably connected inside the sleeve. A threaded rod is threadedly connected inside the rotating ring. The threaded rod is slidably connected inside the sleeve. A first spring is sleeved on the outer surface of the threaded rod. A rectangular connecting block is sleeved on the side of the first spring away from the threaded rod. The rectangular connecting block is fixedly connected to the outer surface of the buckle tightening strap. An intelligent detection device is fixedly connected to the upper end of the detection device main body. The intelligent detection device includes a control main board, and the control main board is fixedly connected to the upper end of the detection device main body.

[0009] Preferably, a power switch is provided at one end of the outer surface of the detection device main body close to the control main board. A camera is fixedly connected to the outer surface of the detection device main body close to the power switch. Three status display lights are fixedly connected to the outer surface of the detection device main body close to the camera.

[0010] Preferably, a spotlight is fixedly connected to the outer surface of the detection device main body close to the three status display lights. First physical buttons are provided on both sides of the detection device main body. Second physical buttons are fixedly connected to both sides of the detection device main body.

[0011] Preferably, a card holder is fixedly connected to the inner surface of the helmet body. Two groups of external hanging screw holes are provided inside the helmet body.

[0012] Preferably, two slots are provided inside the helmet body. Two pressing plates are rotatably connected inside the detection device main body.

[0013] Preferably, two second springs are sleeved inside the detection device main body. Cylindrical blocks are fixedly connected to the outer surfaces of both pressing plates.

[0014] Preferably, two cylindrical plug rods are slidably connected inside the detection device main body.

[0015] Preferably, a support base is fixedly connected to the outer surface of the main body of the detection device, and a third spring is sleeved inside the support base.

[0016] Preferably, a pressing block is sleeved on the upper end of the third spring, and a pressure sensor is fixedly connected inside the support base.

[0017] Preferably, a T-shaped slider is fixedly connected to the outer surface of the pressing block, and a T-shaped sliding groove is formed inside the support base.

[0018] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by providing a first spring, when the control main board receives the electrical signal value generated by the collision, the control main board receives and sends a signal to remind the background staff. At the same time as sending the signal, the control main board sends a signal to start the driving motor. At this time, the driving motor is controlled to drive the disc to rotate 180 degrees through the output shaft. The crank connecting rod type plug is eccentrically connected to the disc. When the disc rotates 90 degrees, the crank connecting rod type plug slides upward and extends out of the rectangular connecting block. At this time, the rectangular connecting block loses the limiting force, and the first spring in the stretched state generates a contraction and sliding. The rectangular connecting block and the buckle tightening strap are bonded by Velcro. When the rectangular connecting block is quickly pulled and contracted by the first spring, the rectangular connecting block quickly pulls the buckle tightening strap worn on the staff's face to slide and contract to one side, so that the helmet body closely fits on the staff's head.

[0019] In the present invention, by providing a pressure sensor, when the staff wears the helmet body and the main body of the detection device to work as a whole, two support bases are installed at the upper end of the main body of the detection device, and the two support bases are respectively located at the positions of the staff's head top and back of the head. Since the enclosed space is relatively narrow and the visibility is low, when the staff bumps at the positions of the head top and back of the head, the pressing block slides and contracts into the support base under the collision of foreign objects. A pressure sensor is installed inside the support base, and the pressure sensor and the pressing block are installed at the same vertical line position. When the pressing block slides quickly under a large collision force, it will directly impact or closely fit the pressure sensor. The electrical signal sent by the pressure sensor is transmitted to the detection background through the control main board, so that the background can understand the collision situation of the safety helmet of the staff in the enclosed space in real time, and quickly call and ask about the current physical state of the staff, avoiding the staff being dizzy and unconscious due to the collision generated by the strong force and unable to detect and react in time. Through timely feedback and intervention, the overall safety of working in the enclosed space is effectively improved, and the accident rate and casualty degree are reduced.

[0020] In the present invention, by providing a control main board, integrating functions such as harmful gas detection, video monitoring, and lighting through the control main board and multiple intelligent button components connected to the upper end of the device main body, the technical upgrade of the traditional safety helmet is realized, the diversity of the functions of the safety helmet is improved, and the operators can obtain more comprehensive and real-time safety protection when working in a confined space.

[0021] In the present invention, by providing a rotating ring, when bonding the rectangular connecting block and the buckle tightening strap, first screw the rotating ring rotating inside the sleeve. The surface of the rotating ring is provided with rubber anti-slip stripes to ensure that the staff can stably rotate the rotating ring. The rotation of the rotating ring drives the threaded rod connected to its inside to slide out toward the side close to the rectangular connecting block. The threaded rod pushes the first spring toward the buckle tightening strap. At this time, pull the surface of the rectangular connecting block and bond it to the surface of the buckle tightening strap after the staff wears it. At this time, screw the rotating ring in the reverse direction. The rotation of the rotating ring drives the threaded rod to slide and contract into the sleeve. By pulling the threaded rod, the first spring is in an extended and stretched state. By screwing the rotating ring, the tension of the first spring can be flexibly adjusted, and flexible and adaptable adjustments can be made.

[0022] In the present invention, by providing a cylindrical plug, when the helmet body and the device main body are in a separated state and need to be installed and fixed, the staff presses the two pressing plates together by fitting the surfaces of the two pressing plates, and presses the two pressing plates toward the center position of the device main body. The rotation of the pressing plate drives the cylindrical block to push the cylindrical plug outwards. At this time, the device main body is sleeved on the surface of the helmet body from top to bottom, and the cylindrical plug is aligned with the slot opened in the helmet body. Release the fingers pressing the pressing plate. The two compressed second springs push the two pressing plates to rotate and reset outwards. The two pressing plates drive the cylindrical block to rotate and push the cylindrical plug into the slot, realizing the clamping and fixing of the slot and the pressing plate. By pressing and releasing the two pressing plates, the clamping and fixing of the helmet body and the device main body can be completed by sleeving. The operation is simple and convenient, which is beneficial to improving the installation efficiency of the helmet body and the device main body.

[0023] In the present invention, by providing a pressing plate, the helmet body and the device main body are connected by a clamping and fixing method. The helmet body and the device main body are of a split design. When it is necessary to perform maintenance and repair operations on the device main body alone, by pressing the pressing plate to separate it, the device main body can be taken out alone for maintenance and repair operations. Moreover, the detachable method can replace this part alone without replacing the entire helmet, which prolongs the overall service life of the helmet. Brief Description of the Drawings

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the cato connection structure of the present invention; Figure 3 It is a schematic diagram of the connection structure of the first physical button of the present invention; Figure 4 It is a schematic diagram of the connection structure of the control main board of the present invention; Figure 5 It is an exploded view of the connection of the detection device main body of the present invention; Figure 6 It is an exploded view of the connection of the pressing plate of the present invention; Figure 7 It is a schematic diagram of the connection structure of the cylindrical plug of the present invention; Figure 8 It is an exploded view of the connection of the rectangular connecting block of the present invention; Figure 9 It is an exploded view of the connection of the threaded rod of the present invention; Figure 10 It is an exploded view of the connection of the pressing block of the present invention.

[0025] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows: 11, helmet body; 12, detection device main body; 13, buckle tightening strap; 14, drive motor; 15, disc; 16, crank connecting rod type plug; 17, sleeve; 18, rotating ring; 19, threaded rod; 21, first spring; 22, rectangular connecting block; 23, control main board; 24, power switch; 25, camera; 26, status display lamp; 27, spotlight; 28, first physical button; 29, second physical button; 31, cato; 32, external screw hole; 33, slot; 34, pressing plate; 35, second spring; 36, cylindrical block; 37, cylindrical plug; 38, support seat; 39, third spring; 41, pressing block; 42, pressure sensor; 43, T-shaped slider; 44, T-shaped chute. Specific Embodiments

[0026] The following further describes the embodiments of the present invention in detail with reference to the drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] Please refer to Figures 1 - 10, the present invention provides a single - soldier intelligent monitoring device for potential hazards in enclosed spaces based on the Internet of Things, including a helmet body 11. A detection device main body 12 is clamped on the outer surface of the helmet body 11. A buckle - tightening strap 13 is sleeved inside the helmet body 11. A driving motor 14 is fixedly connected inside the helmet body 11. A disc 15 is sleeved on the outer surface of the driving motor 14. The disc 15 is rotatably connected inside the helmet body 11. A crank - connecting - rod - type inserting rod 16 is rotatably connected inside the disc 15. (The crank - connecting - rod - type inserting rod 16 is a crank - connecting rod composed of two connecting rods, and one end of the connecting rod has an inserting rod in the shape of a round rod). A sleeve 17 is fixedly connected to the lower end of the detection device main body 12. A rotating ring 18 is rotatably connected inside the sleeve 17. A threaded rod 19 is threadedly connected inside the rotating ring 18. The threaded rod 19 is slidably connected inside the sleeve 17. A first spring 21 is sleeved on the outer surface of the threaded rod 19. A rectangular connecting block 22 is sleeved on the side of the first spring 21 away from the threaded rod 19. The rectangular connecting block 22 is fixedly connected to the outer surface of the buckle - tightening strap 13. An intelligent detection device is fixedly connected to the upper end of the detection device main body 12. The intelligent detection device includes a control main board 23, and the control main board 23 is fixedly connected to the upper end of the detection device main body 12. A power switch 24 is arranged at one end of the outer surface of the detection device main body 12 close to the control main board 23. A camera 25 is fixedly connected to the outer surface of the detection device main body 12 close to the power switch 24. Three status display lights 26 are fixedly connected to the outer surface of the detection device main body 12 close to the camera 25. A spotlight 27 is fixedly connected to the outer surface of the detection device main body 12 close to the three status display lights 26. First physical buttons 28 are arranged on both sides of the detection device main body 12. Second physical buttons 29 are fixedly connected to both sides of the detection device main body 12. A card holder 31 is fixedly connected to the inner surface of the helmet body 11. Two groups of external screw holes 32 are opened inside the helmet body 11. Before entering the enclosed space for work, the detection device main body 12 is connected to the helmet body 11 by clamping. The SD card and the SIM card are inserted into the card holder 31 inside the helmet body 11 before wearing operation, and at this time, they are in a fixed state. The staff wears the helmet body 11 on the top of the head and adjusts the buckle - tightening strap 13 to make it comfortable around both ears. After wearing, adjust the tightness of the buckle - tightening strap 13 according to the staff's own head circumference. The positions where the buckle - tightening strap 13 and the rectangular connecting block 22 are in contact are sewn with magic tapes. After the tightness adjustment is completed, the rectangular connecting block 22 and the buckle - tightening strap 13 are bonded together with the magic tape. After the comfortable and fitting wearing is completed, long - press the power switch 24 at the upper end of the detection device main body 12 for three seconds to make the detection device main body 12 enter the on - state. Three status display lights 26 are installed on the surface of the detection device main body 12, and the three status display lights 26 respectively display the network, battery power, and connection system status, that is, the network status light;Good network: green, average network: orange, poor network / no network: red, battery status light; Sufficient battery: green, low battery: red, charging: orange System status light;Connected system: green, unconnected system: red, not worn: orange. By observing the display colors of the three status indicator lights 26, the status of the detection device main body 12 can be understood. After the detection device main body 12 is in a normal working state, the staff can enter the confined space to work. When working in the confined space, the control main board 23 installed at the upper end of the detection device main body 12 is the main board, which provides data processing and analysis (collecting data from various sensors), communication (controlling communication with the background system or other devices), storage function (temporarily storing monitoring data to prevent data loss in case of communication interruption), start / stop control of the drive motor 14 (sending electrical signals for start / stop control of the drive motor 14). A gas sensor module is also installed in the control main board 23, which is the core component for detecting harmful gases and can detect various common harmful gases such as carbon monoxide, hydrogen sulfide, ammonia, etc. (its working principle is based on electrochemical oxidation-reduction reactions. There are two electrodes inside the sensor immersed in the electrolyte. The gas to be detected diffuses into the sensor through the permeable membrane and undergoes oxidation or reduction reactions on the electrode surface, generating an electric current. The magnitude of the current is proportional to the gas concentration, and the gas concentration can be determined by measuring the current). When the staff wears the helmet body 11 to work, the first physical button 28 set on one side of the detection device main body 12 can be pressed through the detection device main body 12 to drive the camera 25 connected to the detection device main body 12 to start. By pressing the first physical button 28 briefly, the camera 25 can be controlled to take pictures, and by pressing the first physical button 28 long, the camera 25 can be controlled to record videos. By pressing the second physical button 29 on one side of the detection device main body 12 briefly, a conversation can be made with the background, and by pressing the second physical button 29 long, the previous received voice can be replayed. There are two second physical buttons 29 and the first physical button 28 set on both sides of the helmet body 11. The other first physical button 28 and the second physical button 29 respectively play the role of sending a distress message and controlling the start / stop of the spotlight 27 for lighting. An opening for inserting the headphone connection line and the charger line is provided at the lower end position of the helmet body 11. Two groups of external hanging screw holes 32 are provided inside the helmet body 11. Both groups of external hanging screw holes 32 are threaded holes, and external hanging parts can be fixed by screwing the external hanging part screws to expand the helmet body 11 to make it have more functions. The helmet body 11 and the detection device main body 12 are connected and fixed. Based on the Internet of Things and intelligent hardware, through the data automatic collection and transmission function of the hardware device, data automatic collection, uploading, and voice safety prompts are realized. Information such as the on-site distribution and videos of the workers is displayed in real time on the background computer terminal, providing a scientific on-site management and decision-making basis for project managers. By integrating functions such as harmful gas detection, video monitoring, and lighting through the control main board 23 connected to the upper end of the detection device main body 12 and multiple intelligent button components, the technical upgrade of the traditional safety helmet is realized, the diversity of the safety helmet functions is improved, and the operators can obtain more comprehensive and real-time safety protection when working in the confined space.

[0028] There are two slots 33 opened inside the helmet body 11. Two pressing plates 34 are rotatably connected inside the detection device body 12. Two second springs 35 are sleeved inside the detection device body 12. The two second springs 35 are respectively sleeved on the outer surfaces of the two pressing plates 34. Cylindrical blocks 36 are fixedly connected to the outer surfaces of the two pressing plates 34. Two cylindrical insertion rods 37 are slidably connected inside the detection device body 12. The two cylindrical blocks 36 are respectively rotatably connected inside the two cylindrical insertion rods 37. The two cylindrical insertion rods 37 are respectively clamped inside the two slots 33. When the helmet body 11 and the detection device body 12 are in a separated state and it is necessary to install and fix the helmet body 11 and the detection device body 12, the staff presses the surfaces of the two pressing plates 34 together and presses the two pressing plates 34 towards the position closer to the center of the detection device body 12. The rotation of the pressing plate 34 drives the cylindrical block 36 to push the cylindrical insertion rod 37 outwards. At this time, the detection device body 12 is sleeved on the surface of the helmet body 11 from top to bottom, and the cylindrical insertion rod 37 is aligned with the slot 33 opened inside the helmet body 11. Then, release the fingers pressing the pressing plate 34. The two compressed second springs 35 push the two pressing plates 34 to rotate and reset outwards. The two pressing plates 34 drive the cylindrical block 36 to rotate and push the cylindrical insertion rod 37 into the slot 33, realizing the clamping and fixing of the slot 33 and the pressing plate 34. By pressing and releasing the two pressing plates 34, the clamping and fixing of the helmet body 11 and the detection device body 12 can be completed through sleeving. The operation is simple and convenient, which is beneficial to improving the installation efficiency of the helmet body 11 and the detection device body 12. The helmet body 11 and the detection device body 12 are connected by a clamping and fixing method. The helmet body 11 and the detection device body 12 are of a separable design. When it is necessary to perform maintenance and repair operations on the detection device body 12 alone, press the pressing plate 34 to separate it, and then the detection device body 12 can be taken out alone for maintenance and repair operations.

[0029] A support base 38 is fixedly connected to the outer surface of the detection device main body 12. A third spring 39 is sleeved inside the support base 38. The upper end of the third spring 39 is sleeved with a pressing block 41. The pressing block 41 is slidably connected inside the support base 38. A pressure sensor 42 is fixedly connected inside the support base 38. The pressure sensor 42 and the pressing block 41 are on the same vertical line. A T-shaped slider 43 is fixedly connected to the outer surface of the pressing block 41. A T-shaped sliding groove 44 is formed inside the support base 38. The T-shaped slider 43 is slidably connected inside the T-shaped slider 43. When the staff wears the helmet body 11 and the detection device main body 12 as a whole to work, two support bases 38 are installed at the upper end of the detection device main body 12. The two support bases 38 are respectively located at the positions of the staff's head and the back of the head. Since the confined space is relatively narrow and the visibility is low, when the staff bumps at the positions of the head and the back of the head, the pressing block 41 slides and contracts into the support base 38 under the bump of an external object. A pressure sensor 42 is installed inside the support base 38. The pressure sensor 42 and the pressing block 41 are installed at the same vertical line position. When the pressing block 41 slides rapidly under a large bumping force, it will directly hit or closely fit the pressure sensor 42. The pressure sensor 42 is a resistance strain type. The strain gauge inside it will deform due to the pressure, resulting in a change in the resistance value.By measuring the change in resistance value, the connected circuit can convert this change into an electrical signal. The electrical signal emitted by the pressure sensor 42 is transmitted to the detection background through the control main board 23, enabling the background to understand in real time the collision situation of the safety helmet worn by the staff in the confined space and quickly call to inquire about the current physical state of the staff, so as to avoid the dizziness and coma of the staff caused by the collision generated by great force and the inability to detect and respond in time. Through timely feedback and intervention, the overall safety of confined space operations is effectively improved, and the accident incidence rate and casualty degree are reduced. When the control main board 23 receives the electrical signal value generated by the collision, the control main board 23 receives and emits a signal to remind the background staff. At the same time as emitting the signal, the control main board 23 emits a signal to start the drive motor 14. At this time, the drive motor 14 is controlled to drive the disk 15 to rotate 180 degrees through the output shaft. The crank connecting rod type plug 16 is eccentrically connected to the disk 15. When the disk 15 rotates 90 degrees, the crank connecting rod type plug 16 slides upward and extends out of the rectangular connecting block 22. At this time, the rectangular connecting block 22 loses the limiting force and generates a contraction slide through the first spring 21 in the stretched state. The rectangular connecting block 22 and the buckle tightening strap 13 are adhered by Velcro. When the rectangular connecting block 22 is quickly pulled and contracted by the first spring 21, the rectangular connecting block 22 quickly pulls the buckle tightening strap 13 worn on the staff's face to slide and contract to one side, making the helmet body 11 closely fit on the staff's head. When bonding the rectangular connecting block 22 and the buckle tightening strap 13, first twist the rotating ring 18 rotating inside the sleeve 17. The surface of the rotating ring 18 is provided with rubber anti-slip stripes to ensure that the staff can stably rotate the rotating ring 18. The rotation of the rotating ring 18 drives the threaded rod 19 connected to its interior to slide and extend toward the side close to the rectangular connecting block 22. The threaded rod 19 pushes the first spring 21 toward the buckle tightening strap 13 side. At this time, pull the surface of the rectangular connecting block 22 and bond it to the surface of the buckle tightening strap 13 after the staff wears it. At this time, twist the rotating ring 18 in the reverse direction. The rotation of the rotating ring 18 drives the threaded rod 19 to slide and contract into the sleeve 17. The threaded rod 19 pulls the first spring 21 to make it in the unfolded and stretched state. By twisting the rotating ring 18, the tension of the first spring 21 can be flexibly adjusted.

[0030] Working principle: First step, before entering the confined space for work, the detection device main body 12 is connected to the helmet main body 11 in a snap-fit manner. Inside the helmet main body 11, a card holder 31 is installed. Before wearing and operating, an SD card and a SIM card are inserted into the inside of the card holder 31. At this time, both are in a fixed state. The staff wears the helmet main body 11 on the top of the head and adjusts the buckle tightening strap 13 to make it comfortable around both ears. After wearing, adjust the tightness of the buckle tightening strap 13 according to the staff's own head circumference. The positions where the buckle tightening strap 13 and the rectangular connecting block 22 are in contact are sewn with Velcro. After adjusting the tightness, bond the rectangular connecting block 22 and the buckle tightening strap 13 together with Velcro. After the comfortable and fitting wearing is completed, long-press the power switch 24 at the upper end of the detection device main body 12 for three seconds to make the detection device main body 12 enter the on state. Three status indicator lights 26 are installed on the surface of the detection device main body 12. The three status indicator lights 26 respectively display the network, battery power, and connection system status, namely the network status light; good network: green, general network: orange, poor network / no network: red, battery status light; sufficient battery power: green, low battery: red, charging: orange system status light; connected to the system: green, not connected to the system: red, not worn: orange. By observing the display colors of the three status indicator lights 26, understand the status of the detection device main body 12. After the detection device main body 12 is in a normal working state, the staff can enter the confined space for work. When working in the confined space, the control main board 23 installed at the upper end of the detection device main body 12 is the main board, which provides data processing and analysis (collect data from various sensors), communication (control responsible for communicating with the background system or other devices), storage function (temporarily store monitoring data to prevent data loss in case of communication interruption), start and stop control of the drive motor 14 (send electrical signals for starting and stopping control of the drive motor 14). A gas sensor module is also installed inside the control main board 23, which is the core component for detecting harmful gases and can detect various common harmful gases, such as carbon monoxide, hydrogen sulfide, ammonia, etc. (its working principle is based on electrochemical oxidation-reduction reactions. There are two electrodes inside the sensor immersed in the electrolyte. The gas to be detected diffuses into the sensor through the permeable membrane and undergoes oxidation or reduction reactions on the electrode surface, generating an electric current.The magnitude of the current is directly proportional to the gas concentration. By measuring the current, the gas concentration can be determined. When the staff wears the helmet body 11 to work, the detection device main body 12 can be pressed against the first physical button 28 provided on one side of the detection device main body 12, driving the camera 25 connected to the detection device main body 12 to start. By pressing the first physical button 28 briefly, the camera 25 can be controlled to take pictures, and by pressing the first physical button 28 long, the camera 25 can be controlled to record videos. By pressing the second physical button 29 on one side of the detection device main body 12 briefly, communication with the background can be carried out, and by pressing the second physical button 29 long, the previous received voice can be replayed. There are two second physical buttons 29 and first physical buttons 28 provided on both sides of the helmet body 11. The other first physical button 28 and second physical button 29 respectively play the role of sending a distress message and controlling the start and stop of the spotlight 27 for lighting. At the lower end position of the helmet body 11, there is an opening for inserting the headphone connection line and the charger line. Inside the helmet body 11, there are two groups of external hanging screw holes 32. Both groups of external hanging screw holes 32 are threaded holes, and external hanging parts can be fixed by screwing the external hanging part screws, expanding the helmet body 11 to make it have more functions. The helmet body 11 and the detection device main body 12 are connected and fixed. Based on the Internet of Things and intelligent hardware, through the data automatic collection and transmission function of the hardware device, data can be automatically collected, uploaded, and voice safety prompts can be given. Information such as the distribution of workers on-site and videos can be displayed in real-time on the background computer terminal, providing a scientific on-site management and decision-making basis for project managers. By integrating functions such as harmful gas detection, video monitoring, and lighting through the control main board 23 connected to the upper end of the detection device main body 12 and multiple intelligent button components, the technical upgrade of the traditional safety helmet is realized, the diversity of the safety helmet functions is improved, and the operators can obtain more comprehensive and real-time safety protection when working in a confined space.

[0031] Second step, when the staff wears the helmet body 11 and the detection device main body 12 to work as a whole, two support seats 38 are installed at the upper end of the detection device main body 12, and the two support seats 38 are respectively located at the positions of the staff's head top and back of the head. Since the confined space is relatively narrow and the visibility is low, when the staff bumps at the positions of the head top and back of the head, the pressing block 41 slides and contracts into the support seat 38 under the bump of an external object. A pressure sensor 42 is installed in the support seat 38, and the pressure sensor 42 and the pressing block 41 are installed at the same vertical line position. When the pressing block 41 slides rapidly under a large bumping force, it will directly hit or closely fit the pressure sensor 42. The pressure sensor 42 is a resistance strain type, and the strain gauge inside it will deform due to the pressure, resulting in a change in the resistance value.By measuring the change in resistance value, the connected circuit can convert this change into an electrical signal. The electrical signal emitted by the pressure sensor 42 is transmitted to the detection background through the control main board 23, enabling the background to understand in real time the collision situation of the safety helmet worn by the staff in the confined space, and quickly calling to inquire about the current physical state of the staff, avoiding the dizziness and coma of the staff caused by the collision generated by great force and being unable to detect and react in time. Through timely feedback and intervention, the overall safety of the confined space operation can be effectively improved, the accident incidence rate and the degree of casualties can be reduced. When the control main board 23 receives the electrical signal value generated by the collision, the control main board 23 receives and emits a signal to remind the background staff. At the same time as emitting the signal, the control main board 23 emits a signal to start the drive motor 14. At this time, the drive motor 14 is controlled to drive the disc 15 to rotate 180 degrees through the output shaft. The crank connecting rod type inserting rod 16 is eccentrically connected to the disc 15. When the disc 15 rotates 90 degrees, the crank connecting rod type inserting rod 16 slides upward and extends out from the rectangular connecting block 22. At this time, the rectangular connecting block 22 loses the limiting force and generates a contraction slide through the first spring 21 in the stretched state. The rectangular connecting block 22 and the buckle tightening strap 13 are adhered by Velcro. When the rectangular connecting block 22 is quickly pulled and contracted by the first spring 21, the rectangular connecting block 22 quickly pulls the buckle tightening strap 13 worn on the staff's face to slide and contract to one side, making the helmet body 11 closely fit on the staff's head. When bonding the rectangular connecting block 22 and the buckle tightening strap 13, first twist the rotating ring 18 rotating inside the sleeve 17. The surface of the rotating ring 18 is provided with rubber anti-slip stripes to ensure that the staff can stably rotate the rotating ring 18. The rotation of the rotating ring 18 drives the threaded rod 19 connected to its interior to slide and extend toward the side close to the rectangular connecting block 22. The threaded rod 19 pushes the first spring 21 toward the buckle tightening strap 13 side. At this time, pull the surface of the rectangular connecting block 22 and bond it to the surface of the buckle tightening strap 13 after the staff wears it. At this time, twist the rotating ring 18 in the reverse direction. The rotation of the rotating ring 18 drives the threaded rod 19 to slide and contract into the sleeve 17. The threaded rod 19 pulls the first spring 21 to make it in the unfolded and stretched state. By twisting the rotating ring 18, the tension of the first spring 21 can be flexibly adjusted.

[0032] In the third step, when the helmet body 11 and the detection device body 12 are in a separated state and need to be installed and fixed, the staff presses the two pressing plates 34 by fitting the surfaces of the two pressing plates 34, presses the two pressing plates 34 towards the position close to the center of the detection device body 12. By rotating the pressing plate 34, the cylindrical block 36 is driven to push the cylindrical insertion rod 37 outwards. At this time, the detection device body 12 is sleeved on the surface of the helmet body 11 from top to bottom, and the cylindrical insertion rod 37 is aligned with the slot 33 opened in the helmet body 11. Release the fingers pressing the pressing plate 34, and the two compressed second springs 35 push the two pressing plates 34 to rotate and reset outwards. The two pressing plates 34 drive the cylindrical block 36 to rotate and push the cylindrical insertion rod 37 into the slot 33, realizing the clamping and fixing of the slot 33 and the pressing plate 34. By pressing and releasing the two pressing plates 34, the clamping and fixing of the helmet body 11 and the detection device body 12 can be completed through sleeving. The operation is simple and convenient, which is beneficial to improving the installation efficiency of the helmet body 11 and the detection device body 12. The helmet body 11 and the detection device body 12 are connected by a clamping and fixing method. The helmet body 11 and the detection device body 12 are of a separated design. When it is necessary to perform maintenance and repair operations on the detection device body 12 alone, by pressing the pressing plate 34 to separate it, the detection device body 12 can be taken out alone for maintenance and repair operations.

[0033] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for specific purposes.

Claims

1. An individual intelligent monitoring device for potential dangers in a confined space based on the Internet of Things, comprising a helmet body (11), wherein a detection device body (12) is snap-connected to the outer surface of the helmet body (11), characterized in that: A buckle tightening strap (13) is sleeved inside the helmet body (11), a driving motor (14) is fixedly connected inside the helmet body (11), a disc (15) is sleeved on the outer surface of the driving motor (14), the disc (15) is rotatably connected inside the helmet body (11), a crank-connecting rod (16) is rotatably connected inside the disc (15), a sleeve (17) is fixedly connected to the lower end of the detection device body (12), a rotating ring (18) is rotatably connected inside the sleeve (17), a threaded rod (19) is threadedly connected inside the rotating ring (18), the threaded rod (19) is slidably connected inside the sleeve (17), a first spring (21) is sleeved on the outer surface of the threaded rod (19), a rectangular connecting block (22) is sleeved on the side of the first spring (21) away from the threaded rod (19), and the rectangular connecting block (22) is fixedly connected to the outer surface of the buckle tightening strap (13); An intelligent detection device is fixedly connected to the upper end of the detection equipment body (12); The intelligent detection device comprises a control mainboard (23), and the control mainboard (23) is fixedly connected to the upper end of the detection device body (12).

2. The single-soldier intelligent monitoring equipment for potential dangers in confined spaces based on the Internet of Things as claimed in claim 1, characterized in that: A power switch (24) is provided at one end of the outer surface of the detection device body (12) close to the control main board (23); A camera (25) is fixedly connected to one end of the outer surface of the detection device body (12) close to the power switch (24), and three status display lights (26) are fixedly connected to one end of the outer surface of the detection device body (12) close to the camera (25).

3. The single-soldier intelligent monitoring equipment for potential dangers in confined spaces based on the Internet of Things as claimed in claim 2, characterized in that: A spotlight (27) is fixedly connected to one end of the outer surface of the detection device body (12) close to the three status display lights (26); Wherein, first physical buttons (28) are arranged on both sides of the detection device body (12), and second physical buttons (29) are fixedly connected to both sides of the detection device body (12).

4. The single-soldier intelligent monitoring equipment for potential dangers in confined spaces based on the Internet of Things as claimed in claim 3, characterized in that: A card holder (31) is fixedly connected to the inner surface of the helmet body (11); Wherein, two groups of external screw holes (32) are provided inside the helmet body (11).

5. The single-soldier intelligent monitoring equipment for potential dangers in confined spaces based on the Internet of Things as claimed in claim 4, characterized in that: Two slots (33) are provided inside the helmet body (11); Wherein, two pressing plates (34) are rotatably connected inside the detection device body (12).

6. The IoT-based single-soldier intelligent monitoring equipment for potential dangers in confined spaces as claimed in claim 5, characterized in that: Two second springs (35) are sleeved inside the detection device body (12), and the two second springs (35) are sleeved on the outer surfaces of the two pressing plates (34) respectively; Wherein, cylindrical blocks (36) are fixedly connected to the outer surfaces of the two pressing plates (34).

7. The single-soldier intelligent monitoring equipment for potential dangers in confined spaces based on the Internet of Things as claimed in claim 6, characterized in that: Two cylindrical insert rods (37) are slidably connected inside the detection device body (12), and the two cylindrical blocks (36) are rotatably connected inside the two cylindrical insert rods (37) respectively; The two cylindrical inserting rods (37) are respectively clamped inside the two slots (33).

8. The single-soldier intelligent monitoring equipment for potential dangers in confined spaces based on the Internet of Things as claimed in claim 7, characterized in that: A support seat (38) is fixedly connected to the outer surface of the detection device body (12); Wherein, a third spring (39) is sleeved inside the support seat (38).

9. The single-soldier intelligent monitoring equipment for potential dangers in confined spaces based on the Internet of Things as claimed in claim 8, characterized in that: The upper end of the third spring (39) is sleeved with a pressing block (41), and the pressing block (41) is slidably connected inside the support seat (38); Wherein, a pressure sensor (42) is fixedly connected inside the support seat (38), and the pressure sensor (42) and the pressing block (41) are located on the same vertical line.

10. The IoT-based single-soldier intelligent monitoring equipment for potential dangers in confined spaces as claimed in claim 9, characterized in that: A T-shaped sliding block (43) is fixedly connected to the outer surface of the pressing block (41); The support seat (38) is provided with a T-shaped sliding groove (44) inside, and the T-shaped sliding block (43) is slidably connected inside the T-shaped sliding block (43).

Images