Fire rescue ice surface person in distress rescue device

Abstract

The application discloses a fire rescue ice surface distress personnel rescue device, and belongs to the technical field of fire rescue equipment; the fire rescue ice surface distress personnel rescue device comprises a mobile carrier, an ice layer detection module, a positioning and rescue module, a buoyancy adjusting module and a remote control module; the mobile carrier adopts a track type anti-trapping structure, is provided with retractable ice-breaking teeth at the bottom, the ice layer detection module detects the ice layer thickness and water temperature in real time and divides a safety area; the positioning and rescue module is combined with an infrared thermal imaging positioner and a foldable rescue arm, the rescue arm is provided with a pressure sensor and a lifesaving lock buckle at the tail end, and is matched with a flexible lifesaving floating platform which can be rapidly inflated; the buoyancy adjusting module can automatically adjust the buoyancy gas volume according to the water depth of the fallen person, and the remote control module realizes wireless remote control operation of the device and real-time feedback of rescue data; the fire rescue ice surface distress personnel rescue device can realize accurate positioning, safe approach and rapid rescue of the ice surface distress personnel, is suitable for different thicknesses of ice layers and complex ice-water mixed environments, and significantly improves the safety and efficiency of ice surface rescue.

Description

Technical Field

[0001] This invention relates to the field of fire rescue equipment technology, specifically to a fire rescue device for rescuing people in distress on ice. Background Technology

[0002] In cold regions, rivers and lakes easily freeze over in winter. Influenced by factors such as sunlight, water flow, wind, and human activity, the ice thickness is unevenly distributed, greatly increasing the risk of people falling through ice and into the water. People in cold water can experience numbness and loss of consciousness within a short time, and if rescue is not timely, it can easily lead to injury or death. Currently, commonly used ice rescue devices in fire and rescue operations include ice rescue boats, rescue robots, drones dropping rescue equipment, and manual rescue using ladders, lifebuoys, and other tools. However, these existing technologies and patents have many shortcomings and cannot meet the needs for efficient and safe rescue in complex ice environments.

[0003] In the prior art, for example, Chinese patent publication number CN107651138A discloses a rescue boat for thin ice surfaces, which uses impellers on both sides of the hull for drive and supports to maintain the stability of the hull. It uses a bracket and a crane to transfer people who have fallen into the water. However, this device does not have a water depth adaptive buoyancy adjustment mechanism. If the person who has fallen into the water sinks into a deeper body of water, relying solely on the bracket and crane results in a slow response speed and difficult operation, which can easily delay the rescue opportunity. Moreover, under the interference of wind, waves, or underwater currents, it is difficult for the mechanical device to accurately position itself. Publication number CN2069 Chinese patent 68953U discloses a remotely controlled ice rescue robot that uses crampons to secure the ice surface and ropes to pull people out of the water. However, the crampons are prone to loosening under the pressure and shaking of the people in the water, causing the robot to fall into the water and fail. It is also unable to quickly transfer people to the shore, resulting in low rescue efficiency. In addition, existing drone-launched rescue equipment can only provide buoyancy support and cannot enable active grabbing and transfer of people in the water. Manual rescue methods pose a great risk of rescuers falling into the ice again, and are physically demanding and inefficient.

[0004] Meanwhile, existing ice rescue devices generally suffer from three core defects: First, they cannot adapt to ice thickness, making safe movement on ice of varying thicknesses difficult and prone to causing ice breakage and secondary hazards; second, the location of people in the water is delayed, especially in scenarios with water mist, snow cover, or thick ice, making rapid and accurate location impossible; and third, buoyancy adjustment is passive, often employing fixed buoyancy structures that cannot adjust the buoyancy air volume in real time according to the water depth of the person in the water, affecting rescue safety. Therefore, there is an urgent need for an ice rescue device that can solve the above problems and achieve adaptive ice detection, accurate location, active rescue, and adaptive buoyancy adjustment for people in distress on ice. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: According to an embodiment of the present invention, a fire rescue device for people in distress on ice includes a mobile carrier, an ice detection module, a positioning and rescue module, a buoyancy adjustment module, and a remote control module. Each module is integrated on the mobile carrier and electrically connected to the remote control module via a line. The mobile carrier adopts a tracked anti-sinking structure with retractable ice-breaking teeth at the bottom and anti-slip texture on the track surface. The retractable ice-breaking teeth are hydraulically driven and can adjust the extension length according to the ice thickness to achieve light ice breaking and anti-slip. The ice detection module integrates an ultrasonic detection unit and a temperature sensor. The ultrasonic detection unit is used to detect the ice thickness in real time, and the temperature sensor is used to detect the temperature of the ice and water. The ice detection module can transmit the detection data to the remote control module and divide the safe rescue area and the danger zone according to the preset threshold. The positioning and rescue module includes an infrared thermal imaging locator, a foldable rescue arm, and a life-saving lock. The infrared thermal imaging locator can penetrate ice and water mist to quickly capture the location information of a person who has fallen into the water and feed it back to the remote control module. The foldable rescue arm adopts a multi-section telescopic structure, driven by a motor, and can achieve horizontal extension, vertical lifting, and 360° rotation. A pressure sensor is provided at the end of the foldable rescue arm, and the life-saving lock is electrically connected to the pressure sensor, which can automatically lock after contacting the limbs of the person who has fallen into the water to prevent it from falling off. The positioning and rescue module is also equipped with a flexible life-saving float that can be quickly inflated. The flexible life-saving float is made of wear-resistant and waterproof material, folds and is stored on the side of the mobile carrier, and is connected to the buoyancy adjustment module through an air tube. The buoyancy adjustment module includes a water depth sensor, a self-generating gas device, and an inflation control valve. The water depth sensor is installed at the end of the life-saving buckle and is used to detect the water depth of the person in the water in real time. The self-generating gas device uses a chemical gas-generating agent and can automatically adjust the gas generation rate and gas generation amount according to the water depth data detected by the water depth sensor. The inflation control valve inflates the flexible life-saving float to achieve adaptive buoyancy adjustment. The remote control module includes a wireless signal transmission unit, a data display unit, and a control unit. It can realize the movement of the mobile carrier, the extension and retraction of the retractable ice-breaking teeth, the movement of the foldable rescue arm, the inflation of the flexible rescue floating platform, and the real-time reception and display of positioning data. It supports remote wireless control within 100 meters and is equipped with an emergency manual control interface.

[0006] The track width is 30-50cm, and the anti-slip pattern adopts an interlaced design, which can increase the friction with the ice surface and prevent the mobile carrier from sliding or getting stuck on the ice.

[0007] The ultrasonic detection unit has a detection range of 0.1-1.5m and a detection accuracy error of no more than ±5mm. The temperature sensor has a detection range of -40℃ to 20℃ and can adapt to extreme cold environments.

[0008] The maximum telescopic length of the foldable rescue arm is 5-8m, and the maximum load capacity is not less than 200kg. The telescopic and rotation speeds of the telescopic rescue arm can be adjusted by the remote control module, and the action response time is no more than 0.5s.

[0009] The flexible lifesaving float has an unfolded area of ​​2-3 square meters, an inflation time of no more than 10 seconds, a maximum load capacity of no less than 300 kg, and the surface of the float is equipped with anti-slip protrusions and handrails for easy gripping by people falling into the water.

[0010] The gas-generating agent of the self-generating gas device is an environmentally friendly chemical reagent. No toxic or harmful gases are generated during the gas generation process, and the gas production can be adaptively adjusted from 0.5 to 2 m³ depending on the water depth of 0.5 to 5 m.

[0011] The remote control module is also equipped with an alarm unit that automatically issues an audible and visual alarm signal when the ice thickness is below the safety threshold, the rescue arm exceeds the working range, or the equipment malfunctions.

[0012] The mobile carrier is also equipped with an emergency light and a high-definition camera on its top. The emergency light has an illumination distance of no less than 50m, and the high-definition camera can transmit real-time images of the rescue site, making it easier for command personnel at the rear to monitor the rescue situation.

[0013] The advantages of this invention compared to the prior art are: 1. The ice layer detection module detects the ice layer thickness and temperature in real time, delineates safe and dangerous areas, and, combined with the tracked anti-sinking structure and retractable ice-breaking teeth, enables the device to move safely on ice layers of different thicknesses, avoiding secondary falls of rescue personnel or equipment due to ice breaking. 2. Using an infrared thermal imaging locator, it can penetrate ice, water mist and snow to quickly capture the location of people who have fallen into the water. It has high positioning accuracy and fast response speed, which buys valuable time for rapid rescue. 3. The buoyancy adjustment module detects the water depth of the person who has fallen into the water through a water depth sensor and controls the self-generating gas device to automatically adjust the gas production, providing adaptive buoyancy for the flexible rescue float, ensuring that the person who has fallen into the water can be steadily lifted to the water surface, avoiding secondary dangers due to insufficient buoyancy, and adapting to rescue scenarios with different water depths. 4. The positioning and rescue module, combined with a foldable rescue arm, an automatic locking life-saving buckle, and a flexible life-saving floating platform, enables precise grabbing of people who have fallen into the water, temporary buoyancy support, and rapid transfer. The remote control module enables full wireless control, reducing the time rescuers are exposed to dangerous environments and significantly improving rescue efficiency and safety. 5. The device adopts a lightweight design, which is convenient for transportation and deployment. It can be adapted to various ice surface and ice water mixed rescue scenarios. It is simple and convenient to operate, requiring no complicated training for professional personnel, and is highly practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the fire rescue device for people in distress on ice surfaces according to the present invention; Figure 2 This is a schematic diagram of the bottom structure of the fire rescue device for people in distress on ice surfaces according to the present invention; Figure 3 This is a schematic diagram of the front structure of the fire rescue device for people in distress on ice surfaces according to the present invention; Figure 4 This is a schematic diagram of the foldable rescue arm of the fire rescue device for rescuing people in distress on ice surfaces according to the present invention; Figure 5 This is a schematic diagram of the flexible rescue floating platform of the fire rescue device for people in distress on ice surfaces according to the present invention; Figure 6 This is a schematic diagram of the data display unit of the fire rescue device for people in distress on ice surfaces according to the present invention; Figure 7 This is a circuit connection diagram of the fire rescue device for people in distress on ice surfaces according to the present invention.

[0015] Figure label: 1-Mobile carrier; 11-Retractable ice-breaking teeth; 12-Crawler track; 13-Emergency lighting; 14-High-definition camera; 2-Ice layer detection module; 21-Ultrasonic detection unit; 22-Temperature sensor; 3-Location and rescue module; 31-Infrared thermal imaging locator; 32-Foldable rescue arm; 321-Pressure sensor; 33-Lifesaving lock; 34-Flexible lifesaving float; 341-Anti-slip protrusion; 342-Handrail; 4-Buoyancy adjustment module; 41-Water depth sensor; 42-Self-generating gas device; 43-Inflation control valve; 5-Remote control module; 51-Wireless signal transmission unit; 52-Data display unit; 53-Control unit; 54-Emergency manual control interface; 55-Alarm unit. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Example: A fire rescue device for people in distress on ice according to an embodiment of the present invention, such as... Figure 1 As shown, specifically, it includes a mobile carrier 1, an ice layer detection module 2, a positioning and rescue module 3, a buoyancy adjustment module 4, and a remote control module 5. Each module is integrated on the mobile carrier 1 and is electrically connected to the remote control module 5 via a line.

[0018] like Figure 2 As shown, the mobile carrier 1 adopts a lightweight design with an overall weight of 180kg, which facilitates transportation and on-site deployment by fire trucks. The bottom of the mobile carrier 1 is equipped with tracks 12, which are 40cm wide and have interlaced anti-slip patterns on the surface to increase friction with the ice surface and prevent slipping or getting stuck in the ice. The bottom of the mobile carrier 1 has 6 retractable ice-breaking teeth 11 evenly distributed. The retractable ice-breaking teeth 11 are hydraulically driven and extend in a range of 0-10cm, which can be flexibly adjusted according to the thickness of the ice layer.

[0019] like Figure 3 As shown, the ice layer detection module 2 is installed at the front end of the mobile carrier 1, integrating an ultrasonic detection unit 21 and a temperature sensor 22. The ultrasonic detection unit 21 has a detection range of 0.1-1.5m and a detection accuracy error of ±3mm, which can accurately detect the ice layer thickness. The temperature sensor 22 has a detection range of -40℃ to 20℃, which can detect the ice layer and water temperature in real time. The detection data is transmitted to the remote control module 5 through a line. The remote control module 5 presets a safe ice layer thickness threshold of 0.15m. When the detected ice layer thickness is ≥0.15m, it is determined to be a safe area, and the mobile carrier 1 is guided to move in this area. When the detected ice layer thickness is <0.15m, it is determined to be a dangerous area, and the alarm unit 55 of the remote control module 5 issues an alarm signal and prohibits the mobile carrier 1 from entering.

[0020] like Figure 4As shown, the positioning and rescue module 3 is installed on one side of the mobile carrier 1, including an infrared thermal imaging locator 31, a foldable rescue arm 32, and a life-saving lock 33, and is also equipped with a flexible life-saving floating platform 34; the positioning accuracy error of the infrared thermal imaging locator 31 is ±8cm, and it can penetrate ice, water mist, and snow to quickly capture the location information of the person who has fallen into the water and feed it back to the remote control module 5; the foldable rescue arm 32 adopts a combination of a vertical guide rail and a 3-section telescopic structure, driven by a stepper motor, with a maximum telescopic length of 6m and a maximum load capacity of 250kg. The lifting, telescopic, and rotation speeds can be adjusted by the remote control module 5, and the action response time is 0.3s; a pressure sensor 321 is provided at the end of the foldable rescue arm 32, and the life-saving lock 33 is electrically connected to the pressure sensor 321. When the life-saving lock 33 contacts the limb of the person who has fallen into the water, and the pressure sensor 321 detects a pressure ≥5N, it controls the life-saving lock 33 to automatically lock. The locking force is adjustable to avoid excessive locking and secondary injury; Figure 5 As shown, the flexible life-saving floating platform 34 is made of wear-resistant and waterproof Oxford cloth, folded and stored on the side of the mobile carrier 1, and connected to the buoyancy adjustment module 4 through an air pipe. The inflation time is 8 seconds, the unfolded area is 2.5㎡, and the maximum load capacity is 350kg. The surface of the floating platform is provided with anti-slip protrusions 341 and two handrails 342 for easy gripping by people falling into the water.

[0021] The buoyancy adjustment module 4 includes a water depth sensor 41, a self-generating gas device 42, and an inflation control valve 43. The water depth sensor 41 is installed at the end of the life-saving buckle 33, with a detection range of 0.5-5m and a detection accuracy error of ±2cm. The self-generating gas device 42 contains an environmentally friendly gas-generating agent composed of sodium bicarbonate and citric acid. No toxic or harmful gases are generated during the gas generation process. It can automatically adjust the gas generation rate and volume based on the water depth data detected by the water depth sensor 41. When the water depth is 0.5-2m, the gas generation volume is 0.5-1m³; when the water depth is 2-5m, the gas generation volume is 1-2m³. The inflation control valve 43 is an electromagnetic control valve that automatically controls the opening and closing of the air pipe according to the gas generation situation to inflate the flexible life-saving float 34 and ensure that the float provides sufficient buoyancy.

[0022] like Figure 7 As shown, the remote control module 5 includes a wireless signal transmission unit 51, a data display unit 52, a control unit 53, an emergency manual control interface 54, and an alarm unit 55. The wireless signal transmission unit 51 adopts Bluetooth and WiFi dual-mode transmission, with an effective control distance of 100 meters. Figure 6As shown, the data display unit 52 uses an LCD screen to display data such as ice thickness, temperature, location of the person in the water, water depth, and inflation volume of the floating platform in real time; the control unit 53 adopts a button design, with function buttons for movement, ice breaking, positioning, rescue, and inflation, making operation simple and convenient; the alarm unit 55 uses an audible and visual alarm, automatically issuing an alarm signal when the ice thickness is below the safety threshold, the foldable rescue arm 32 exceeds its working range, or the equipment malfunctions; the emergency manual control interface 54 uses a USB interface, allowing for emergency operation by connecting a manual controller when wireless control fails.

[0023] In addition, the top of the mobile carrier 1 is also equipped with an emergency light 13 and a high-definition camera 14. The illumination distance of the emergency light 13 is 60m, which can meet the lighting needs of nighttime rescue. The high-definition camera 14 is waterproof and can transmit the rescue scene in real time, so that the rear command personnel can keep track of the rescue progress.

[0024] The working process of the fire rescue device for people in distress on ice is as follows: (1) On-site deployment: After the fire rescue personnel arrive at the scene of the emergency on the ice, they will unload the device from the fire truck, start the device through the remote control module 5, check the working status of each module, and ensure that the equipment is operating normally; (2) Ice layer detection and area division: The ice layer detection module 2 is activated, the ultrasonic detection unit 21 detects the ice layer thickness in real time, the temperature sensor 22 detects the ice layer and water temperature, and the detection data is transmitted to the remote control module 5. The remote control module 5 divides the safe area and the dangerous area according to the preset threshold, guides the mobile carrier 1 to move in the safe area through the track 12, and adjusts the extension length of the retractable ice-breaking tooth 11 according to the ice layer thickness to achieve light ice breaking and anti-slip; (3) Locating the person who fell into the water: Activate the infrared thermal imaging locator 31 to quickly capture the body temperature signal of the person who fell into the water, accurately locate the person's position, and display the location information on the data display unit 52 of the remote control module 5. The rescuers control the mobile carrier 1 to move to a safe position near the person who fell into the water through the control unit 53. (4) Rescue operation: The foldable rescue arm 32 is raised, lowered, extended and rotated by the remote control module 5 to send the life lock 33 to the vicinity of the person in the water. When the life lock 33 contacts the person in the water, the pressure sensor 321 detects the pressure signal and automatically locks the life lock 33. At the same time, the buoyancy adjustment module 4 is activated, the water depth sensor 41 detects the water depth of the person in the water, and the self-generating gas device 42 automatically generates gas according to the water depth data. The flexible life-saving floating platform 34 is inflated by the inflation control valve 43. The floating platform quickly unfolds to provide buoyancy support for the person in the water. (5) Personnel transfer: The foldable rescue arm 32 is controlled by the remote control module 5 to slowly lift the person who fell into the water onto the mobile carrier 1, or the flexible life-saving floating platform 34 is used to assist in transferring the person who fell into the water to a safe area on the shore to complete the rescue; (6) Emergency handling: If the ice thickness is lower than the safety threshold, the foldable rescue arm 32 exceeds the working range, or the equipment malfunctions during the rescue, the alarm unit 55 of the remote control module 5 will automatically issue an audible and visual alarm signal, and the rescue personnel will adjust the rescue plan in time. If the wireless control fails, emergency operation can be carried out through the emergency manual control interface 54 to ensure the smooth progress of the rescue work.

[0025] The fire rescue device for people in distress on ice can accurately locate, safely approach, quickly rescue, and prevent secondary injuries to people in distress on ice. It is adaptable to ice layers of different thicknesses and complex ice-water mixed environments, significantly improving the safety and efficiency of ice rescue and is suitable for various fire emergency rescue scenarios on ice.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rescue device for people in distress on ice surfaces during fire rescue operations, characterized in that, It includes a mobile carrier (1), an ice layer detection module (2), a positioning and rescue module (3), a buoyancy adjustment module (4), and a remote control module (5). Each module is integrated on the mobile carrier (1) and electrically connected to the remote control module (5) via a line. The mobile carrier (1) adopts a tracked anti-sinking structure, with retractable ice-breaking teeth (11) at the bottom and anti-slip texture on the surface of the track (12). The retractable ice-breaking teeth (11) are hydraulically driven and can adjust the extension length according to the ice thickness to achieve light ice breaking and anti-slip. The ice layer detection module (2) integrates an ultrasonic detection unit (21) and a temperature sensor (22). The ultrasonic detection unit (21) is used to detect the ice layer thickness in real time, and the temperature sensor (22) is used to detect the ice layer and water temperature. The ice layer detection module (22) can transmit the detection data to the remote control module (5) and divide the safe rescue area and the dangerous area according to the preset threshold. The positioning and rescue module (3) includes an infrared thermal imaging locator (31), a foldable rescue arm (32), and a life-saving lock (33). The infrared thermal imaging locator (31) can penetrate ice and water mist, quickly capture the location information of the person who has fallen into the water, and feed it back to the remote control module (5). The foldable rescue arm (32) adopts a multi-section telescopic structure and is driven by a motor. It can achieve horizontal extension, vertical lifting and 360° rotation. The end of the foldable rescue arm (32) is equipped with a pressure sensor (321). The life-saving lock (33) is electrically connected to the pressure sensor (321) and can automatically lock after contacting the limbs of the person who has fallen into the water to prevent it from falling off. The positioning and rescue module (3) is also equipped with a flexible life-saving float (34) that can be quickly inflated. The flexible life-saving float (34) is made of wear-resistant and waterproof material, folded and stored on the side of the mobile carrier (1), and connected to the buoyancy adjustment module (4) through an air pipe. The buoyancy adjustment module (4) includes a water depth sensor (41), a self-generating gas device (42), and an inflation control valve (43). The water depth sensor (41) is installed at the end of the life-saving buckle (33) and is used to detect the water depth of the person who has fallen into the water in real time. The self-generating gas device (42) uses a chemical gas-generating agent and can automatically adjust the gas generation rate and gas generation amount according to the water depth data detected by the water depth sensor (41). The inflation control valve (43) inflates the flexible life-saving floating platform (34) to achieve adaptive buoyancy adjustment. The remote control module (5) includes a wireless signal transmission unit (51), a data display unit (52) and a control unit (53), which can realize the walking of the mobile carrier (1), the extension and retraction of the retractable ice-breaking tooth (11), the movement of the foldable rescue arm (32), the inflation of the flexible life-saving floating platform (34) and the real-time reception and display of positioning data. It supports remote wireless control within 100 meters and is equipped with an emergency manual control interface (54).

2. The fire rescue device for people in distress on ice as described in claim 1, characterized in that, The track (12) is 30-50cm wide and the anti-slip pattern adopts an interlaced design, which can increase the friction with the ice surface and prevent the mobile carrier (1) from sliding or getting stuck on the ice.

3. The fire rescue device for people in distress on ice as described in claim 1, characterized in that, The ultrasonic detection unit (21) has a detection range of 0.1-1.5m and a detection accuracy error of no more than ±5mm. The temperature sensor (22) has a detection range of -40℃ to 20℃ and can adapt to extreme cold environments.

4. A rescue device for people in distress on ice surfaces according to claim 1, characterized in that, The maximum telescopic length of the foldable rescue arm (32) is 5-8m, and the maximum load capacity is not less than 200kg. The telescopic and rotation speed of the telescopic rescue arm (32) can be adjusted by the remote control module (5), and the action response time is no more than 0.5s.

5. A rescue device for people in distress on ice surfaces according to claim 1, characterized in that, The flexible life-saving floating platform (34) has an unfolded area of ​​2-3㎡, an inflation time of no more than 10s, a maximum load capacity of no less than 300kg, and the surface of the floating platform is provided with anti-slip protrusions (341) and handrails (342) for easy gripping by people who fall into the water.

6. A rescue device for people in distress on ice surfaces according to claim 1, characterized in that, The gas-generating agent of the self-generating gas device (42) is an environmentally friendly chemical reagent. No toxic or harmful gases are generated during the gas generation process. The gas production volume can be adaptively adjusted from 0.5 to 2 m³ according to the water depth range of 0.5-5 m.

7. A rescue device for people in distress on ice surfaces according to claim 1, characterized in that, The remote control module (5) is also equipped with an alarm unit (55), which automatically sends out an audible and visual alarm signal when the ice thickness is lower than the safety threshold, the rescue arm exceeds the working range, or the equipment malfunctions.

8. A rescue device for people in distress on ice surfaces according to claim 1, characterized in that, The mobile carrier (1) is also equipped with an emergency lighting lamp (13) and a high-definition camera (14) on its top. The illumination distance of the emergency lighting lamp (13) is not less than 50m, and the high-definition camera (14) can transmit the rescue scene in real time, so that the rear command personnel can grasp the rescue situation.

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