Parachuting landing auxiliary device

Abstract

The utility model relates to the field of parachuting safety devices, and particularly discloses a parachuting landing auxiliary device. The device comprises a height measuring module, an alarm prompting module, a power supply module, a posture sensing and correcting module and a controller, the height measuring module is used for measuring the ground clearance in real time and transmitting a signal to the controller, and the posture sensing and correcting module is used for monitoring a posture sensor of a landing pitching posture of a user and a vibration motor for outputting vibration reminding. The posture sensing and correcting module at least can be arranged on the feet, the shanks, the thighs or the back of a user; and the alarm prompt module is used for giving an alarm to prompt preparation of a landing posture and action of a brake rod. By measuring the ground clearance in real time and giving an alarm prompt, a parachuting person is effectively assisted to safely land, and the parachuting safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of parachute assistance equipment technology, and in particular to a parachute landing assistance device. Background Technology

[0002] As an extreme sport, skydiving safety is always a major concern. The landing phase is one of the most crucial parts of a skydive, especially for novice skydivers and those using wing-type paragliders. Accurately judging altitude and preparing for landing and applying the brakes at the appropriate time are paramount. Currently, skydivers primarily rely on visual estimation or electronic altimeters to determine altitude, but these methods have limitations.

[0003] Traditional parachute landing assistance techniques rely primarily on the skydiver's experience and visual estimation to determine altitude. This method is susceptible to subjective factors, especially at night or in low-visibility conditions, making altitude judgment errors more likely. With technological advancements, electronic altimeters are widely used in parachuting. However, skydivers still need to consult these instruments to obtain altitude information, preventing them from freeing their hands and impacting the accuracy and safety of their landing maneuvers.

[0004] Existing parachute assistance systems, such as the parachute assistance system and terminal disclosed in CN115817826A, include a navigation module, an acceleration detection module, an altitude detection module, a communication module, and a control module. These systems can issue a landing warning signal when the distance between the terminal and the ground is less than a set distance. Although this system has a landing warning function, the parachutist still needs to perceive the warning signal visually or audibly, and it cannot completely solve the problem of the parachutist needing to free their hands during the landing phase.

[0005] In the field of laser ranging technology, CN217955250U discloses a posture reminder device based on laser ranging. This device uses a TOF laser ranging module to trigger a reminder by detecting a distance signal and comparing it with a preset threshold. This laser ranging technology features high accuracy and fast response. However, this device is mainly used in the field of posture reminders and has not been optimized for parachute landing scenarios.

[0006] Similarly, CN114842632A discloses a posture reminder method that also uses a laser ranging module for distance detection and a microprocessor unit to determine whether to trigger a reminder. This method improves the accuracy of the reminder, but it also fails to consider the application requirements of the special environment of skydiving.

[0007] In summary, existing technologies have the following shortcomings: First, traditional visual estimation methods are prone to subjective errors, easily leading to misjudgments of altitude; second, existing electronic altimeters require skydivers to visually observe the instruments to obtain altitude information, making it impossible to free their hands; third, while existing skydiving assistance systems have altitude warning functions, they have not been optimized for the specific needs of the landing phase; finally, while existing laser rangefinding technology has advantages in accuracy and response speed, there are no specific applications for skydiving landing scenarios. Therefore, there is an urgent need for an assistance device that allows skydivers to free their hands during the final landing phase, without needing to observe altimeters and instruments, while simultaneously providing rapid altitude warnings and enabling them to prepare their posture and brake pedal actions. Utility Model Content

[0008] To address the issue that existing technologies often result in injuries to skydivers (especially beginners and those using paragliding) during the landing phase due to misjudging altitude, which delays their preparation posture and braking actions, particularly at night or in low-visibility conditions. Traditional visual estimation methods are prone to subjective errors, and current electronic altimeters require manual observation, preventing hand-free operation. Current technologies do not provide a solution for allowing skydivers to quickly obtain altitude information and prepare for their landing posture and braking actions without needing to constantly monitor altimeters and instruments.

[0009] The technical solution adopted by this utility model to solve its technical problem is: to provide a parachute landing assistance device, comprising:

[0010] The height measurement module is used to measure the height above the ground in real time.

[0011] An attitude sensing and correction module includes an attitude sensor for monitoring the user's landing pitch attitude and a vibration motor for outputting vibration alerts. The attitude sensing and correction module can be installed at least on the user's feet, calves, thighs, or back.

[0012] The alarm notification module is used to provide alarm notifications regarding the preparation for landing and the action of the brake levers.

[0013] The power module is used to provide electrical energy;

[0014] The controller has a first control unit that is communicatively connected to the height measurement module and the attitude sensing and correction module, and a second control unit that is communicatively connected to the height measurement module and the alarm prompting module;

[0015] in,

[0016] When the altitude measurement module measures that the predetermined altitude has been reached, the first control unit controls the attitude sensor to monitor the user's landing pitch attitude, and the vibration motor outputs a vibration alert based on the monitoring information from the attitude sensor. The second control unit then controls the alarm prompt module to issue an alarm.

[0017] Preferably, the device further includes a housing, in which the height measuring module, alarm module, power module and controller are all housed. A power switch is provided on the housing and is electrically connected to the controller. A detection port is provided on the housing for limiting and fixing the output end of the height measuring module.

[0018] Preferably, the alarm prompting module includes a buzzer array for emitting regular prompting sounds. The buzzer array is distributed inside the housing for alternating or simultaneous sounding, and the buzzer array is electrically connected to the controller.

[0019] Preferably, the buzzer array includes a first buzzer, a second buzzer, a third buzzer, and a fourth buzzer that can cooperate to emit regular prompting sounds. The first buzzer and the third buzzer are disposed on the left inner wall of the housing, and the second buzzer and the fourth buzzer are disposed on the right inner wall of the housing.

[0020] Preferably, the buzzer array includes a first buzzer, a second buzzer, a third buzzer, and a fourth buzzer capable of cooperating to emit regular prompting sounds. The first buzzer, the second buzzer, the third buzzer, and the fourth buzzer are located on the same side of the housing and arranged in a rectangular array. The first buzzer and the second buzzer are located above the third buzzer and the fourth buzzer, respectively. The first buzzer and the second buzzer are high-frequency buzzers, and the third buzzer and the fourth buzzer are low-frequency buzzers.

[0021] Preferably, the alarm notification module further includes two alarm indicator lights for auxiliary notification, the two alarm indicator lights are respectively disposed on the left and right sides of the housing, and the alarm indicator lights are electrically connected to the controller.

[0022] Preferably, a working indicator light is provided on the housing, and the working indicator light is electrically connected to the controller.

[0023] Preferably, the outer casing is covered with a protective sleeve, the protective sleeve has an exposed opening at the position corresponding to the detection port, the protective sleeve has multiple sound holes at the position corresponding to the alarm prompt module, and the side of the protective sleeve is provided with a fixing component.

[0024] Preferably, the fastening component includes loops for passing through a user's waist belt, the loops being disposed on the protective sleeve, and at least two loops being provided;

[0025] Alternatively, the fastening components may include male and female Velcro straps, with the male Velcro straps located on the side of the protective cover and the female Velcro straps located on the parachute pack, the user's trouser leg, or the waistband.

[0026] Preferably, the protective cover is stitched to the side of the protective sleeve near the detection port to protect the exposed inner high module. The free end of the protective cover is provided with a male buckle, and the side of the protective sleeve with the detection port away from the protective cover is provided with a female buckle. The male buckle and the female buckle are fastened together.

[0027] The beneficial effects of this invention are as follows: This invention adds auxiliary functions for parachute landing through active ranging and sound prompts. It measures the altitude from the ground in real time using lidar and employs tiered sound prompts. At an altitude of 8 meters, it intermittently sounds to warn of the readiness posture, and at an altitude of 3 meters, it continuously sounds to force the activation of the brake lever. By combining lidar ranging with action prompts, it forms a closed training assistance system. Compared with existing technologies, this invention is compact and can be integrated into existing parachutes without modification. It solves the technical problem that parachutists need to free their hands during the landing phase, quickly obtain altitude prompts without observing altimeters and instruments, and prepare for the readiness posture and brake lever activation, effectively reducing the risk of fall injury during parachute landing. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a three-dimensional structural diagram of a parachute landing assistance device provided in an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the internal structure of the shell in a parachute landing assistance device provided in an embodiment of the present invention;

[0031] Figure 3 A rear view of the overall structure of a parachute landing assistance device provided in an embodiment of this utility model;

[0032] Figure 4 A rear view of the overall structure of a parachute landing assistance device provided in another embodiment of the present invention;

[0033] Figure 5 A circuit diagram of a parachute landing assistance device provided in an embodiment of this utility model;

[0034] Figure 6 A schematic diagram of the attitude sensing and correction module in a parachute landing assistance device provided in an embodiment of this utility model;

[0035] Figure 7 This is a schematic diagram of the parachutist wearing equipment of a parachuting landing assistance device provided in an embodiment of the present utility model.

[0036] The components include: 1. Height measurement module; 2. Controller; 3. Alarm indicator module; 301. First buzzer; 302. Second buzzer; 303. Third buzzer; 304. Fourth buzzer; 305. Alarm indicator light; 4. Power module; 5. Housing; 6. Power switch; 7. Detection port; 8. Working indicator light; 9. Protective cover; 10. Exposed opening; 11. Sound outlet; 12. Fixing components; 1201. Strap; 1202. Velcro; 13. Protective flip cover; 14. Male buckle; 15. Female buckle; 16. Attitude sensing and correction module; 1601. Attitude sensor; 1602. Vibration motor. Detailed Implementation

[0037] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0038] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0039] Example 1

[0040] like Figures 1-7As shown, a parachute landing assistance device includes an altitude measurement module 1, an alarm prompt module 3, a power supply module 4, and a controller 2. The signal output terminal of the altitude measurement module 1 is connected to the first signal input terminal of the controller 2 for real-time measurement of the altitude above the ground. The first signal input terminal of the controller 2 is mainly used to receive altitude data signals transmitted from the altitude measurement module 1. An attitude sensing and correction module 16 is used to monitor the user's landing pitch attitude. The attitude sensing and correction module 16 includes an attitude sensor 1601 and a vibration motor 1602. The signal input terminal of the vibration motor 1602 is connected to the first signal output terminal of the controller 2. The second signal input terminal of the controller 2 is mainly used to receive attitude angle signals transmitted from multiple attitude sensors 1601. The first signal output terminal of the controller 2 is mainly used to output control signals to the vibration motor 1602. A flexible damping pad is provided between the vibration motor 1602 and the attitude sensor 1601 to reduce the impact of the vibration motor 1602 on the attitude sensor 1601. The vibrating motor 1602 is close to the skin, and a strap is connected to it. Compared to other tactile feedback units, the vibrating motor 1602 can minimize the influence of external interference. The vibration feedback allows the user to more intuitively feel the attitude during landing. The attitude sensor 1601 is a sensor integration unit with a housing. The attitude sensing correction module 16 communicates with the controller 2. This signal connection can be wireless Bluetooth or wired. When transmitting wirelessly, the attitude sensing correction module 16 has a built-in battery. The attitude sensor 1601 includes a multi-axis IMU (Inertial Measurement Unit) and a flexible strain sensor, with a built-in gyroscope. It uses the Coriolis effect (inertial force in a rotating coordinate system) to measure angular velocity, and obtains the attitude angle through integration. Based on a data fusion algorithm of the micro-gyroscope and accelerometer, it monitors the parachutist's attitude changes in real time and can accurately calculate the pitch, roll, and yaw angles. The device uses the built-in controller 2 to quickly analyze the attitude data and determine whether the parachutist is in a stable landing posture.The attitude sensing and correction module 16 has eight units, which are strapped to the user's feet, calves, thighs, and back. It captures lower limb joint angles (knees and ankles), torso tilt angles, and impact force distribution in real time. Based on a convolutional neural network (CNN), it analyzes the sensor data and compares it to a preset "standard landing posture model" (e.g., a semi-squatting "three-tight-one-flat" posture: knees bent at 65°±5°, feet parallel to the ground, center of gravity centered). When any part of the body's movement is incorrect, the controller 2 receives the signal from the corresponding attitude sensor 1601 and compares it with the standard landing posture model. If an error is found, the corresponding vibration motor 1602 emits a long vibration to remind the parachutist to correct the posture in the corresponding position. After posture correction, the controller 2 compares the real-time signals from the attitude sensor 1601. If the posture conforms to the standard model, the controller 2 stops vibrating the vibration motor 1602. The signal input terminal of the alarm prompt module 3 is connected to the signal output terminal of the controller 2, used to provide alarm prompts for the prepared posture and brake action. The power output terminal of the power module 4 is connected to the power input terminal of the controller 2 to provide power to the device.

[0041] The controller 2 has a first control unit that connects the height measurement module 1 and the attitude sensing and correction module 16, and a second control unit that connects the height measurement module 1 and the alarm prompt module 3.

[0042] That is, the first control unit has a first signal input terminal, a second signal input terminal and a first signal output terminal, the signal output terminal of the height measurement module 1 is electrically connected to the first signal input terminal of the controller 2, the vibration motor 1602 of the attitude sensing and correction module 16 is electrically connected to the first signal output terminal of the controller 2, and the attitude sensor 1601 of the attitude sensing and correction module 16 is electrically connected to the second signal input terminal of the controller 2.

[0043] The second control unit has a signal output terminal (such as the second signal output terminal and the fourth signal output terminal below) that is electrically connected to the signal input terminal of the alarm module 3, and the second control unit can directly or indirectly receive the height data information monitored by the height measuring module 1. The second control unit can have an input terminal that is directly electrically connected to the signal output terminal of the height measuring module 1, or the first control unit and the second control unit can be electrically connected, with the first control unit receiving the height data information monitored by the height measuring module 1 and transmitting it to the second control unit.

[0044] in,

[0045] When the altitude measurement module 1 measures that the predetermined altitude has been reached, the first control unit controls the attitude sensor 1601 to monitor the user's landing pitch attitude, and the vibration motor 1602 outputs a vibration reminder based on the monitoring information from the attitude sensor 1601. The second control unit controls the alarm prompt module 3 to issue an alarm prompt.

[0046] like Figure 2 As shown, the parachute landing assistance device also includes a housing 5, within which the altitude measuring module 1, alarm indicator module 3, power module 4, and controller 2 are all housed. The housing 5 primarily integrates the various working modules, making it easier to carry, and also limits the position of the altitude measuring module 1 to prevent angular deviations. A power switch 6 is installed on the housing 5. The power input terminal of the power switch 6 is connected to the power output terminal of the power module 4, and the power output terminal of the power switch 6 is connected to the power input terminal of the controller 2. When the power switch 6 is off, the power module 4 stops outputting electrical signals to other components via the controller 2. When the power switch 6 is on, the power module 4 continues to supply power to other components via the controller 2. A detection port 7 is provided on the housing 5. The altitude measuring module 1 is positioned inside the housing 5 near the detection port 7, with its laser output terminal located at the detection port 7. After the housing 5 is properly worn, the detection port 7 faces downwards, facilitating the orientation of the output terminal of the altitude measuring module 1.

[0047] like Figure 2 As shown, the alarm prompt module 3 includes a buzzer array for emitting regular prompt sounds. The buzzer array is distributed inside the housing 5 for alternating and simultaneous sounding. The signal input terminal of the buzzer array is electrically connected to the second control unit of the controller 2. After receiving information monitored by the height measurement module 1, the second control unit of the controller 2 controls the buzzer array to emit alarm information. The second signal output terminal of the controller 2 mainly outputs signals to control the operation of the buzzer array. The buzzer array includes a first buzzer 301, a second buzzer 302, a third buzzer 303, and a fourth buzzer 304 that can cooperate to emit regular prompt sounds. After the housing 5 is disassembled according to the main viewing angle, the first buzzer 301 and the third buzzer 303 are located on the left inner wall of the housing 5, and the second buzzer 302 and the fourth buzzer 304 are located on the right inner wall of the housing 5.

[0048] A working indicator light 8 is provided on the housing 5. The controller 2 has a third control unit that is communicatively connected to the working indicator light 8. The third control unit has a third signal output terminal connected to the signal input terminal of the working indicator light 8. The signal input terminal of the working indicator light 8 is electrically connected to the third signal output terminal of the controller 2. After the controller 2 receives the circuit connection signal transmitted after the power switch 6 is turned on, it controls the working indicator light 8 to light up, indicating that the device has entered the working state. The alarm prompt module 3 also includes two alarm prompt lights 305 for auxiliary prompting. The two alarm prompt lights 305 are respectively located on the left and right sides of the housing 5. The signal input terminal of the alarm prompt lights 305 is electrically connected to the signal output terminal of the second control unit of the controller 2. After receiving the height data information monitored by the height measurement module 1, the second control unit of the controller 2 controls the alarm prompt lights 305 to flash and emit an alarm signal.

[0049] The outer casing 5 is covered by a protective sleeve 9. The protective sleeve 9 has a pre-set opening 10 corresponding to the position of the detection port 7. The protective sleeve 9 also has multiple sound outlets 11 corresponding to the position of the alarm module 3. The sound outlets 11 facilitate sound transmission and reduce the attenuation and absorption of sound by the protective sleeve 9. A fixing component 12 is provided on the side of the protective sleeve 9. The fixing component 12 includes a loop 1201 for passing through the user's waist belt. The loop 1201 is sewn onto the protective sleeve 9, and at least two loops 1201 are provided.

[0050] In this embodiment, the height measurement module 1 uses a TOF (Time-of-Flight) laser rangefinder sensor with a measurement range of 0.2 meters to 30 meters, a measurement accuracy of ±2 centimeters, and a sampling frequency of 100Hz. The height measurement module 1 is connected to the controller 2 via an I2C interface to transmit distance data in real time. The controller 2 uses an STM32F103C8T6 microcontroller with a main frequency of 72MHz, 64KB of built-in flash memory and 20KB of SRAM, and features multiple GPIO (General Purpose Input / Output) interfaces, an I2C interface (Inter-Integrated Circuit Bus), and PWM (Pulse Width Modulation) output capability.

[0051] The power module 4 includes a 3.7V lithium battery with a capacity of 2000mAh, providing approximately 8 hours of continuous operation. A charging port is located on the housing 5 corresponding to the power module 4 for easy charging of the lithium battery. The power module 4 also includes a voltage conversion circuit to convert the battery's 3.7V voltage to the stable 3.3V voltage required by the controller 2. The power switch 6 features a waterproof and dustproof design, ensuring it will not be switched off due to vibration or accidental contact during parachute jumps.

[0052] The buzzer array in alarm module 3 uses piezoelectric buzzers with an operating voltage of 3.3V, a sound pressure level greater than 85dB, and an adjustable frequency range of 2000Hz to 4000Hz. The layout of the four buzzers ensures that the parachutist can clearly hear the alarm during high-speed descent. Alarm indicator light 305 uses a high-brightness LED (Light Emitting Diode) with a brightness greater than 5000mcd and a viewing angle greater than 120 degrees, ensuring clear visibility even in sunlight. The working indicator light 8 uses a low-power LED in green color to indicate the device's operating status.

[0053] The housing 5 is made of ABS (Acrylonitrile Butadiene Styrene) engineering plastic, measuring 120mm × 80mm × 30mm and weighing approximately 150g. It exhibits excellent impact resistance and weather resistance. The housing 5 has an IP65 protection rating, providing dust and water resistance and adapting to various harsh conditions in parachute environments. The detection port 7 has a diameter of 15mm, ensuring unobstructed transmission of the laser signal from the altimeter module 1.

[0054] The protective sleeve 9 is made of nylon fabric, which is waterproof, tear-resistant, and abrasion-resistant. Camouflage fabric can also be used. The protective sleeve 9 has 20 sound outlet holes 11, each 2mm in diameter, arranged in a grid pattern to ensure clear sound transmission. The exposed opening 10 has a diameter of 20mm, slightly larger than the detection port 7, ensuring it does not obstruct the laser signal. The loops 1201 are made of 25mm wide nylon webbing with a load-bearing capacity greater than 50kg. Two loops 1201 can securely and stably fix the device to the user's belt.

[0055] A protective flap 13 is sewn onto the side of the protective cover 9 near the detection port 7. A male buckle 14 is located at the free end of the protective flap 13, and a female buckle 15 is located on the side of the protective cover 9 opposite the protective flap 13 where the detection port 7 is located. The male buckle 14 and female buckle 15 engage. The protective flap 13 is made of the same material as the protective cover 9 and measures 40mm x 40mm, protecting the detection port 7 from dust and moisture when not in use. The male buckle 14 and female buckle 15 are made of nylon and have moderate opening and closing force, ensuring quick opening when needed but preventing accidental loosening during parachute jumps.

[0056] The alarm logic of controller 2 is designed as follows: When a ground clearance of 30 meters is detected, controller 2 triggers the first-level alarm, and the buzzer array emits intermittent short sounds (frequency 2000Hz, duration 0.2 seconds, interval 1 second). The first buzzer 301, the third buzzer 303, the second buzzer 302, and the fourth buzzer 304 alternately sound from the left and right sides, and the alarm indicator light 305 flashes (frequency 1Hz) to remind the parachutist to prepare for landing. When a ground clearance of 5 meters is detected, controller 2 triggers the second-level alarm, and the buzzer array emits continuous rapid sounds (frequency 3000Hz, duration 0.2 seconds, interval 1 second). (0.1 seconds apart) The first buzzer 301, the third buzzer 303, the second buzzer 302, and the fourth buzzer 304 sound simultaneously, and the alarm indicator light 305 flashes rapidly (frequency 2Hz) to prompt the parachutist to prepare to use the brakes; when the detected height above the ground is 3 meters, the controller 2 triggers the third-level alarm, and the buzzer array emits a continuous high-frequency sound (frequency 4000Hz, continuous sound), the first buzzer 301, the third buzzer 303, the second buzzer 302, and the fourth buzzer 304 sound continuously, and the alarm indicator light 305 remains lit, prompting the parachutist to immediately use the brakes.

[0057] The parachute landing assistance device is used as follows: Before jumping, the parachutist secures the device to their belt or parachute using the fixing component 12 on the protective cover 9, ensuring the altitude measuring module 1 faces the ground. Open the protective flip cover 13, ensuring the detection port 7 is unobstructed. Press the power switch 6; the indicator light 8 will illuminate, indicating the device has started working. The device will automatically detect the altitude and trigger corresponding alarm prompts at preset altitudes. The parachutist adjusts their posture and applies the brakes based on the alarm signals to achieve a safe landing. After landing, turn off the power switch 6 and close the protective flip cover 13 to protect the detection port 7.

[0058] This parachute landing aid has the following advantages: it provides parachutists with accurate altitude information by measuring their altitude in real time, avoiding the inaccuracies of traditional visual altitude estimation; it uses a combination of sound and light alarms to ensure clear alarm signals even in high-noise environments; it has a compact structure and is lightweight, so it will not burden the parachutist; it has a comprehensive protective design and can adapt to various harsh environments; it is easy to install and simple to operate, making it suitable for parachutists of all levels.

[0059] Example 2

[0060] A parachute landing assistance device includes an altitude measurement module 1, an alarm prompt module 3, a power supply module 4, and a controller 2. The signal output terminal of the altitude measurement module 1 is connected to the first signal input terminal of the controller 2 for real-time measurement of altitude. The first signal input terminal of the controller 2 is mainly used to receive altitude data signals transmitted from the altitude measurement module 1. An attitude sensing and correction module 16 is used to monitor the user's landing pitch attitude. The attitude sensing and correction module 16 includes an attitude sensor 1601 and a vibration motor 1602. The signal output terminal of the attitude sensor 1601 is connected to the second signal input terminal of the controller 2, and the signal input terminal of the vibration motor 1602 is connected to the first signal output terminal of the controller 2. The second signal input terminal of the controller 2 is mainly used to receive attitude angle signals transmitted from multiple attitude sensors 1601. The first signal output terminal of the controller 2 mainly outputs a signal to control the vibration motor 1602 to vibrate based on the attitude angle signals received from the second signal input terminal. A flexible damping pad is provided between the vibration motor 1602 and the attitude sensor 1601 for flexible damping. The pads reduce the impact of the vibration motor 1602 on the attitude sensor 1601. The vibration motor 1602 is close to the human skin and is connected to a strap. Compared with other tactile feedback units, the vibration motor 1602 can minimize the influence of external interference. The vibration feedback also allows the user to more intuitively feel the attitude feedback during landing. The attitude sensor 1601 is a sensor integration unit with a shell. The signal input terminal of the vibration motor 1602 is connected to the signal output terminal of the controller 2. This signal connection can be wireless Bluetooth connection or wired connection. When wireless transmission is used, the attitude sensing correction module 16 has a built-in battery. The attitude sensor 1601 includes a multi-axis IMU (Inertial Measurement Unit) and a flexible strain sensor, with a built-in gyroscope. It uses the Coriolis effect (inertial force in a rotating coordinate system) to measure angular velocity and obtains the attitude angle through integration. Based on the data fusion algorithm of the micro gyroscope and accelerometer, it monitors the parachutist's attitude changes in real time and can accurately calculate the pitch angle, roll angle and yaw angle. The device uses its built-in controller 2 to quickly analyze attitude data and determine whether the parachutist is in a stable landing posture.The attitude sensing and correction module 16 has eight units, which are respectively attached to the user's feet, calves, thighs, and back via straps. It captures the lower limb joint angles (knees and ankles), torso tilt angles, and impact force distribution in real time. Based on a convolutional neural network (CNN), it analyzes the sensor data and compares it with a preset "standard landing attitude model" (such as a half-squatting "three tight and one flat" posture: knee joints bent at 65°±5°, both feet touching the ground parallel, and center of gravity centered). When any part of the movement is incorrect, the controller 2 receives the signal transmitted by the corresponding attitude sensor 1601 and compares it with the standard landing attitude model. When an error is found, the corresponding vibration motor 1602 emits a long vibration to remind the parachutist to correct the posture of the corresponding position in time. After the posture is corrected, the controller 2 compares it with the real-time signal transmitted by the attitude sensor 1601. When it conforms to the standard model, it controls the vibration motor 1602 to stop vibrating. The signal input terminal of the alarm prompt module 3 is connected to the second signal output terminal of the controller 2. Based on the height measurement distance information received from the first signal input terminal, the second signal output terminal of the controller 2 controls the alarm prompt module 3 to issue an alarm prompt, reminding the user to prepare their posture and engage the brake lever. The power output terminal of the power module 4 is connected to the power input terminal of the controller 2 to provide power to the device. The controller 2 controls the height measurement module 1 to monitor height data and process the distance signal transmitted from it. The alarm prompt module 3 issues an alarm prompt based on the distance information monitored by the height measurement module 1.

[0061] like Figure 2 As shown, the parachute landing assistance device also includes a housing 5, within which the altitude measuring module 1, alarm indicator module 3, power module 4, and controller 2 are all housed. The housing 2 primarily integrates the various working modules, making it easier to carry, and also limits the position of the altitude measuring module 1 to prevent angular deviations. A power switch 6 is installed on the housing 5. The power input terminal of the power switch 6 is connected to the power output terminal of the power module 4, and the power output terminal of the power switch 6 is connected to the power input terminal of the controller 2. When the power switch 6 is off, the power module 4 stops outputting electrical signals to other components via the controller 2. When the power switch 6 is on, the power module 4 continues to supply power to other components via the controller 2. A detection port 7 is provided on the housing 5, and the altitude measuring module 1 is positioned inside the housing 5 near the detection port 7. The laser output terminal of the altitude measuring module 1 is located at the detection port 7.

[0062] In this embodiment, the alarm prompting module 3 includes a buzzer array for emitting regular prompting sounds. The buzzer array is distributed on both sides of the interior of the housing 5, and the signal input terminal of the buzzer array is connected to the second signal output terminal of the controller 2. The second signal output terminal of the controller 2 outputs a control signal to control the operation of the buzzer array based on the height and distance information measured by the height measurement module 1. The buzzer array includes a first buzzer 301, a second buzzer 302, a third buzzer 303, and a fourth buzzer 304 that can cooperate to emit regular prompting sounds. The first buzzer 301, the second buzzer 302, the third buzzer 303, and the fourth buzzer 304 are located on the same side of the inner wall of the housing 5 and are arranged in a rectangular array. The first buzzer 301 and the second buzzer 302 are located above the third buzzer 303 and the fourth buzzer 304, respectively. The first buzzer 301 and the second buzzer 302 are high-frequency buzzers, and the third buzzer 303 and the fourth buzzer 304 are low-frequency buzzers.

[0063] A working indicator light 8 is provided on the housing 5. The signal input terminal of the working indicator light 8 is connected to the third signal output terminal of the controller 2. The third signal output terminal of the controller 2 controls the working indicator light 8 to light up or turn off according to the circuit on / off signal transmitted from the power switch 6. The alarm indicator module 3 also includes two alarm indicator lights 305, which are respectively located on the left and right sides of the housing 5. The signal input terminal of the alarm indicator lights 305 is connected to the fourth signal output terminal of the controller 2. The fourth signal output terminal of the controller 2 controls the alarm indicator lights 305 to flash according to the height and distance information transmitted from the height measurement module 1.

[0064] The outer casing 5 is covered by a protective sleeve 9. The protective sleeve 9 has a pre-set opening 10 corresponding to the position of the detection port 7, and multiple sound outlets 11 corresponding to the position of the alarm module 3. A fixing component 12 is provided on the side of the protective sleeve 9. The fixing component 12 includes a male Velcro fastener 1202 and a female Velcro fastener. The male Velcro fastener 1202 is sewn onto the side of the protective sleeve 9, and the female Velcro fastener is sewn onto the umbrella, the user's trouser leg, or the waistband. The Velcro fastener is made of nylon, with an adhesive strength greater than 2 kg / cm² and a service life exceeding 5000 opening and closing cycles.

[0065] The protective cover 9 is sewn to a protective flap 13 on the side near the detection port 7. A male buckle 14 is provided at the free end of the protective flap 13. A female buckle 15 is provided on the side of the protective cover 9 where the detection port 7 is located, away from the protective flap 13. The male buckle 14 and the female buckle 15 are fastened together.

[0066] In this embodiment, the height measurement module 1 uses a VL53L1X time-of-flight laser rangefinder sensor, with a measurement range of 0.1 meters to 15 meters, a measurement accuracy of ±1 centimeter, and a sampling frequency of 50Hz. The height measurement module 1 is connected to the controller 2 via an SPI interface to transmit distance data in real time. The controller 2 uses an ESP32 microcontroller, a dual-core processor with a main frequency of 240MHz, built-in 520KB / s RAM, and features Wi-Fi and Bluetooth capabilities, enabling wireless data transmission and firmware updates.

[0067] Power module 4 includes a 7.4V lithium battery pack, consisting of two 3.7V lithium batteries connected in series, with a total capacity of 3000mAh, providing approximately 12 hours of continuous operation. Power module 4 also includes a voltage conversion circuit to convert the battery's 7.4V voltage to the stable 3.3V voltage required by controller 2. The power switch 6 employs a magnetic design, using a magnet to attract the contacts and close the circuit, avoiding potential waterproofing issues associated with mechanical switches.

[0068] The buzzer array in alarm module 3 uses electromagnetic buzzers, operating at 5V, with a sound pressure level greater than 95dB and an adjustable frequency range of 1000Hz to 5000Hz. The four buzzers employ a stereo design, capable of producing directional sounds and alternating sounds according to a predetermined pattern, making the audible alerts more prominent and helping skydivers determine their attitude. Alarm indicator light 305 uses RGB full-color LEDs (Light Emitting Diodes) with a brightness greater than 8000mcd, displaying different colors to indicate different alarm levels. The working indicator light 8 uses dual-color LEDs, displaying green for normal operation and red for low battery.

[0069] The housing 5 is made of carbon fiber composite material, measuring 100mm × 60mm × 20mm and weighing only 80g, exhibiting extremely high strength and lightweight characteristics. The housing 5 has an IP67 protection rating, providing complete dust protection and allowing for short-term immersion in water without damage. The detection port 7 has a diameter of 10mm and incorporates a built-in dustproof and waterproof transparent membrane to protect the height measurement module 1 from external environmental influences.

[0070] The protective sleeve 9 is made of high-strength nylon fabric, possessing superior abrasion resistance and tear strength. The sound outlet 11 on the protective sleeve 9 has a diameter of 1.5mm, with 30 holes arranged in a spiral pattern to optimize sound transmission. The exposed opening 10 has a diameter of 15mm and an internal transparent waterproof membrane, ensuring it does not interfere with laser signal transmission while preventing moisture ingress. The male and female Velcro straps 1202 are made of military-grade nylon material, with an adhesive strength greater than 3kg / cm² and a service life exceeding 10,000 opening and closing cycles.

[0071] The protective flap 13 uses the same material as the protective sleeve 9, but with an added waterproof coating. It measures 30mm x 30mm and features heat-sealed edges for enhanced waterproofing. The male buckle 14 and female buckle 15 are made of aerospace-grade aluminum alloy, featuring a lightweight design and moderate opening force to ensure quick opening when needed, without accidentally loosening during parachute jumps.

[0072] The alarm logic of controller 2 is designed as follows: When a ground clearance of 15 meters is detected, controller 2 triggers a warning, and the buzzer array emits a low-frequency alert tone (frequency 1000Hz, duration 0.5 seconds, interval 2 seconds). At this time, the third buzzer 303 and the fourth buzzer 304 sound, and the alarm indicator light 305 flashes blue (frequency 0.5Hz), indicating that the parachutist is about to enter the landing preparation phase. When a ground clearance of 10 meters is detected, controller 2 triggers the first-level alarm, and the buzzer array emits a medium-frequency alarm tone (frequency 2500Hz, duration 0.3 seconds, interval 0.7 seconds). At this time, the first buzzer 301 and the third buzzer 303 sound, and the alarm indicator light 305 flashes yellow (frequency 1Hz), indicating that the parachutist is about to enter the landing preparation phase. Prepare for landing; when the detected altitude is 5 meters, controller 2 triggers the second-level alarm, and the buzzer array emits a high-frequency rapid sound (frequency 4000Hz, duration 0.1 seconds, interval 0.1 seconds). At this time, the first buzzer 301 and the second buzzer 302 sound, and the alarm indicator light 305 flashes red rapidly (frequency 3Hz), prompting the parachutist to prepare to use the brakes; when the detected altitude is 3 meters, controller 2 triggers the final alarm, and the buzzer array emits a continuous high-frequency sound (frequency 5000Hz, continuous sound). The first buzzer 301, the third buzzer 303, the second buzzer 302, and the fourth buzzer 304 sound continuously, and the alarm indicator light 305 remains continuously lit in red, prompting the parachutist to immediately use the brakes.

[0073] This parachute landing aid also features data logging capabilities, recording altitude changes for each jump and transmitting the data to a smartphone app for analysis via a built-in 5G communication module to help skydivers improve their techniques. The device also has an automatic calibration function, automatically adjusting measurement parameters based on different terrain and environmental conditions to ensure measurement accuracy.

[0074] The usage method of this device is similar to that of Embodiment 1, but a self-test function is added before use: after powering on, the device will automatically perform a system self-test, including battery power detection, sensor calibration, and alarm system testing. If the self-test passes, the working indicator light 8 will show green, indicating that the device can be used normally; if a problem is found during the self-test, the working indicator light 8 will show red and flash, and the buzzer will emit an error prompt sound.

[0075] It should be noted that both Embodiment 1 and Embodiment 2 are types of parachute landing assistance devices.

[0076] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0077] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0078] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0079] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0080] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0081] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0082] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A parachute landing assistance device, characterized in that, include: The height measurement module is used to measure the height above the ground in real time. An attitude sensing and correction module includes an attitude sensor for monitoring the user's landing pitch attitude and a vibration motor for outputting vibration alerts. The attitude sensing and correction module can be installed at least on the user's feet, calves, thighs, or back. The alarm notification module is used to provide alarm notifications regarding the preparation for landing and the action of the brake levers. The power module is used to provide electrical energy; The controller has a first control unit that is communicatively connected to the height measurement module and the attitude sensing and correction module, and a second control unit that is communicatively connected to the height measurement module and the alarm prompting module; in, When the altitude measurement module measures that the predetermined altitude has been reached, the first control unit controls the attitude sensor to monitor the user's landing pitch attitude, and the vibration motor outputs a vibration alert based on the monitoring information from the attitude sensor. The second control unit then controls the alarm prompt module to issue an alarm.

2. The parachute landing assistance device as described in claim 1, characterized in that, It also includes a housing, in which the height measuring module, alarm module, power module and controller are all housed. A power switch is provided on the housing, which is electrically connected to the controller. A detection port is provided on the housing for limiting and fixing the output end of the height measuring module.

3. The parachute landing assistance device as described in claim 2, characterized in that, The alarm prompting module includes a buzzer array for emitting regular prompting sounds. The buzzer array is distributed inside the housing for alternating or simultaneous sounding. The buzzer array is electrically connected to the controller.

4. The parachute landing assistance device as described in claim 3, characterized in that, The buzzer array includes a first buzzer, a second buzzer, a third buzzer, and a fourth buzzer that can work together to emit regular prompts. The first and third buzzers are located on the left inner wall of the housing, and the second and fourth buzzers are located on the right inner wall of the housing.

5. The parachute landing assistance device as described in claim 3, characterized in that, The buzzer array includes a first buzzer, a second buzzer, a third buzzer, and a fourth buzzer that can cooperate to emit regular prompts. The first buzzer, the second buzzer, the third buzzer, and the fourth buzzer are located on the same side of the housing and arranged in a rectangular array. The first buzzer and the second buzzer are located above the third buzzer and the fourth buzzer, respectively. The first buzzer and the second buzzer are high-frequency buzzers, and the third buzzer and the fourth buzzer are low-frequency buzzers.

6. The parachute landing assistance device as described in claim 4 or 5, characterized in that, The alarm notification module also includes two alarm indicator lights for auxiliary notification. The two alarm indicator lights are respectively located on the left and right sides of the housing, and the alarm indicator lights are electrically connected to the controller.

7. The parachute landing assistance device as described in claim 2, characterized in that, The housing is equipped with a working indicator light, which is electrically connected to the controller.

8. The parachute landing assistance device as described in claim 2, characterized in that, The outer shell is covered with a protective sleeve. The protective sleeve has an exposed opening at the position corresponding to the detection port. The protective sleeve has multiple sound holes at the position corresponding to the alarm prompt module. The side of the protective sleeve is provided with a fixing component.

9. The parachute landing assistance device as described in claim 8, characterized in that, The fastening assembly includes loops for passing through a user's waist belt, the loops being disposed on the protective sleeve, and at least two loops being provided; Alternatively, the fastening components may include male and female Velcro fasteners, with the male Velcro fastener sewn onto the side of the protective cover and the female Velcro fastener located on the parachute pack, the user's trouser leg, or the waistband.

10. The parachute landing assistance device as described in claim 8, characterized in that, The protective sleeve is connected to a protective flip cover near the detection port to protect the exposed high module inside the port. The free end of the protective flip cover is provided with a male buckle, and the side of the protective sleeve with the detection port away from the protective flip cover is provided with a female buckle. The male buckle and the female buckle are fastened together.

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