Firefighter leg blind area detection system based on radar perception

Abstract

The invention relates to the technical field of leg blind area detection, in particular to a fireman leg blind area detection system based on radar perception, comprising a fireman leg blind area monitoring device based on radar perception, the monitoring device comprises a controller, a laser ranging module, a power supply and an alarm, the controller is used for analyzing and processing data transmitted by the laser ranging module in real time, the laser ranging module is responsible for detecting obstacles or moving objects near legs in real time, and when it is detected that a dangerous obstacle or object approaches, the controller controls the alarm to give an alarm to a fireman in time through the alarm feedback module, so that the fireman is protected against danger. And the power supply is used for supplying power. The laser ranging module and the controller are matched for use, so that the problem of sensing blind areas of legs of firemen in a complex environment can be effectively solved, accidental injuries caused by approaching of obstacles or dangerous objects are reduced, and the firemen can adapt to various complex and dangerous environments.

Description

Technical Field

[0001] The present invention relates to the technical field of leg blind spot detection, and in particular to a firefighter leg blind spot detection system based on radar perception. Background Art

[0002] As firefighting and rescue missions become more complex and dangerous, firefighters face many challenges when fighting fires and conducting disaster relief. In particular, due to the complexity of the fire environment and low visibility, firefighters' lower limbs are prone to ignore or fail to perceive surrounding obstacles or dangerous objects. This blind spot perception problem greatly increases the risk of injury to firefighters, especially when working in thick smoke, darkness, narrow spaces or collapsed areas.

[0003] At present, a variety of technologies have been applied to the safety protection of firefighters, such as thermal imaging equipment, infrared sensors and GPS positioning systems, etc., to improve the safety of firefighters during the rescue process. However, these technologies are mostly used for remote monitoring, whole-body perception or positioning, and lack a specific perception system for the area near the firefighters' legs. In addition, traditional fire scene equipment such as helmets, gloves, protective gear, etc., although they can protect the firefighters' bodies from physical threats such as thermal radiation and chemical damage, cannot solve the problem of firefighters sensing obstacles around their legs in real time when moving. Therefore, the existing technology has the following problems and disadvantages:

[0004] 1. Insufficient blind spot perception: Existing sensing systems mostly focus on the upper body or the overall environment and lack specific perception solutions for the lower limbs of firefighters.

[0005] 2. Real-time feedback lag: Traditional devices such as thermal imagers or handheld detectors may not be able to provide timely feedback on obstacle information near the legs.

[0006] 3. Poor adaptability to complex environments: Some sensing technologies have limited effectiveness in smoke, dust or narrow spaces and cannot meet the operational needs of firefighters under various extreme conditions. Summary of the invention

[0007] The purpose of the present invention is to provide a firefighter's leg blind spot detection system based on radar perception, so as to solve the problem raised in the above background technology that the firefighter cannot perceive obstacles around the legs in real time when moving.

[0008] To achieve the above object, the present invention provides the following technical solution: a firefighter leg blind spot detection system based on radar perception, comprising:

[0009] A firefighter's leg blind spot monitoring device based on radar perception, the monitoring device includes a controller, a laser ranging module, a power supply and an alarm, the controller is used to perform real-time analysis and processing on the data transmitted by the laser ranging module, the laser ranging module is responsible for real-time detection of obstacles or moving objects near the legs, when a dangerous obstacle or object is detected approaching, the controller controls the alarm through the alarm feedback module to promptly alert the firefighter, and the power supply is used for power supply.

[0010] Preferably, the controller further includes an alarm feedback module and a wireless communication module.

[0011] Preferably, the controller is installed on the firefighter's protective pants using an embedded processing structure, and the controller calculates information such as distance and relative movement speed through a detection algorithm, and determines whether to issue an alarm based on a preset danger threshold.

[0012] Preferably, the laser ranging module adopts a millimeter wave radar sensor, and the laser ranging module is mainly installed in the middle area of ​​the trouser legs on both sides of the firefighter's protective pants, close to the knee or the outer side of the calf.

[0013] Preferably, the power supply is a rechargeable lithium battery.

[0014] Preferably, the alarm is any one or more of a buzzer, a vibrator or an LED light.

[0015] Preferably, the wireless communication module is equipped with a low-power wireless communication module for transmitting real-time sensing information to the command center or other team members to achieve collaborative work among firefighters.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the invention can effectively solve the perception problem of firefighters' leg blind spots in complex environments through the coordinated use of laser ranging modules and controllers, reduce accidental injuries caused by approaching obstacles or dangerous objects, and can adapt to various complex and dangerous environments, especially in thick smoke, darkness or low visibility conditions. It provides reliable leg surrounding environment perception through the advantages of millimeter-wave radar. At the same time, the embedded design and multiple alarm mechanisms greatly improve the practicality and safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the local connection state structure of the controller of the present invention;

[0018] Figure 2 It is a schematic diagram of the system structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the front distribution structure of the laser distance measuring module of the present invention;

[0020] Figure 4 This is a schematic diagram of the distribution structure of the laser ranging module of the present invention on the back of pants.

[0021] In the figure: 1. controller; 2. laser ranging module; 3. power supply; 4. alarm. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4 , an embodiment provided by the present invention: a firefighter leg blind spot detection system based on radar perception, comprising:

[0024] A firefighter leg blind spot monitoring device based on radar perception, the monitoring device includes a controller 1, a laser ranging module 2, a power supply 3 and an alarm 4, and the controller 1, the laser ranging module 2, the power supply 3 and the alarm 4 are connected and positioned with the fire suit by a Velcro wrapping and covering method, which is convenient for disassembly and assembly. The positioning method is not limited to Velcro wrapping, and can be placed in a pocket type according to the use requirements, and the top of the pocket is covered to further ensure the stability of its placement and avoid it falling off. At the same time, the outer layer of the Velcro or pocket material adopts double silk Deng II reinforced fabric, and aramid non-woven fabric + flame-retardant PTFE film is used between the outer layer, which has good fire retardant and heat insulation effects, avoiding high-temperature baking of electrical parts. It is suitable for use in fire suits and can also be adapted to high-temperature protective clothing such as special furnace jobs. The controller 1 is used to perform real-time analysis on the data transmitted by the laser ranging module 2 Processing, the laser ranging module 2 is responsible for real-time detection of obstacles or moving objects near the legs. When a dangerous obstacle or object is detected approaching, the controller 1 controls the alarm 4 through the alarm feedback module to promptly alarm the firefighter. The power supply 3 is used for power supply. The device provides real-time obstacle detection around the firefighter's legs to improve safety in complex and low-visibility environments. It uses radar technology to effectively detect in smoke, dust, and low-light conditions, and provides high-precision, short-range perception. It is designed in a lightweight, embedded form and integrated into the firefighter's protective equipment to ensure that freedom of movement is not affected during operation. A temperature sensor can also be installed while installing the laser ranging module 2 to achieve real-time monitoring of the temperature. When the temperature exceeds the safety threshold, the alarm 4 is controlled to sound an alarm to remind the firefighter to take timely measures to avoid injuries caused by high temperature, thereby further improving the safety of its use.

[0025] Furthermore, the controller 1 also includes an alarm feedback module and a wireless communication module. The alarm 4 uses any one or more of a buzzer, a vibrator or an LED light, and is equipped with a low-power wireless communication module for transmitting real-time perception information to the command center or other team members to achieve collaborative work among firefighters. Depending on the installation type of the controller 1, the alarm forms include: Vibration prompts: A small vibration device installed in the protective clothing sends a vibration alarm to the firefighters, reminding them to avoid or pay attention to the environment under their feet; Voice prompts: Voice prompts are issued through headphones or communication equipment worn by firefighters; LED light prompts: Visual prompts are given through the LED lights on the firefighters' protective clothing, which are especially suitable for low-light environments.

[0026] Furthermore, the controller 1 is installed on the firefighter's protective pants using an embedded processing structure, and the controller 1 calculates information such as distance and relative movement speed through a detection algorithm, and determines whether to issue an alarm based on a preset danger threshold.

[0027] Furthermore, the laser ranging module 2 adopts a millimeter-wave radar sensor, and the laser ranging module 2 is mainly installed in the middle area of ​​the trouser legs on both sides of the firefighter's protective pants, close to the knee or the outside of the calf. In order to further enhance the coverage of the lower limb blind spot, another part of the millimeter-wave radar sensor can be installed on the front of the firefighter's shoes or ankles. The front end sensor of the shoe can help detect close obstacles under the feet, especially suitable for movement in high-risk terrain. The millimeter-wave radar has strong penetrating ability and can accurately detect close obstacles in complex environments such as smoke and dust. It overcomes the limitations of traditional visual and thermal imaging equipment under extreme conditions, ensuring that firefighters can continuously obtain information about the surrounding environment in a variety of complex environments. The operating frequency is around 24GHz or 77GHz, and the millimeter-wave radar can scan the surrounding environment of the legs in real time within a range of 0.5 meters to 3 meters.

[0028] Furthermore, the power supply 3 uses a rechargeable lithium battery with a battery life of at least 12 hours. The overall design is lightweight and durable, ensuring that firefighters can perform their tasks safely and effectively in complex and high-risk environments.

[0029] Working principle: The controller 1, laser ranging module 2, power supply 3 and alarm 4 used in this application are all products that can be directly purchased on the market. Their principles and connection methods are all prior arts well known to those skilled in the art, so they will not be described here. When the present invention is used, its system workflow is as follows:

[0030] (1) Data collection: The millimeter-wave radar sensor is responsible for real-time scanning of the environmental information around the firefighter’s legs, mainly collecting parameters such as the distance, speed, and direction of obstacles.

[0031] (2) Data processing: The embedded processing unit uses the embedded target detection algorithm to process the data collected by the radar and determine the relative position and movement trend between the obstacle and the firefighter.

[0032] (3) Alarm feedback: When a dangerous object is detected entering a preset safety distance (e.g., within 0.5 m), the system immediately activates the alarm feedback module and issues a vibration, sound, or light alarm to remind firefighters to avoid danger.

[0033] (4) Information transmission (function expansion): Through the wireless communication module, the system transmits the detection information around the legs to the main equipment worn by the firefighters or the command center to support coordination between teams.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A firefighter's leg blind spot detection system based on radar perception, characterized in that: include: A firefighter's leg blind spot monitoring device based on radar perception, the monitoring device comprising a controller (1), a laser ranging module (2), a power supply (3) and an alarm (4), the controller (1) being used to perform real-time analysis and processing on data transmitted by the laser ranging module (2), the laser ranging module (2) being responsible for real-time detection of obstacles or moving objects near the legs, when a dangerous obstacle or object is detected approaching, the controller (1) controls the alarm (4) through an alarm feedback module to promptly issue an alarm to the firefighter, and the power supply (3) being used for power supply.

2. The firefighter leg blind spot detection system based on radar perception according to claim 1 is characterized in that: The controller (1) also includes an alarm feedback module and a wireless communication module.

3. The firefighter leg blind spot detection system based on radar perception according to claim 1 is characterized in that: The controller (1) is installed on the firefighter's protective pants using an embedded processing structure, and the controller (1) calculates information such as distance and relative movement speed through a detection algorithm, and determines whether to issue an alarm based on a preset danger threshold.

4. The firefighter leg blind spot detection system based on radar perception according to claim 1 is characterized in that: The laser distance measurement module (2) uses a millimeter wave radar sensor, and the laser distance measurement module (2) is mainly installed in the middle area of ​​the trouser legs on both sides of the firefighter's protective trousers, close to the knees or the outer side of the calves.

5. The firefighter leg blind spot detection system based on radar perception according to claim 1 is characterized in that: The power supply (3) is a rechargeable lithium battery.

6. The firefighter leg blind spot detection system based on radar perception according to claim 1, characterized in that: The alarm (4) is any one or more of a buzzer, a vibrator or an LED light.

7. The firefighter leg blind spot detection system based on radar perception according to claim 2 is characterized in that: The wireless communication module is equipped with a low-power wireless communication module for transmitting real-time sensing information to the command center or other team members to achieve collaborative work among firefighters.

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