Hydraulic engineering unmanned vehicle for remote sensing surveying

Abstract

The utility model discloses a water conservancy project unmanned plane for remote sensing surveying and mapping relates to unmanned plane technical field, including the host computer of unmanned plane, the lower extreme of host computer is connected with two supports, and the lower extreme of support is connected with the folding air bag, and the inside installation of folding air bag has the compressed gas jar, and compressed gas jar is connected with host computer circuit, and the protection network is connected between two folding air bags, and the protection network is intercommunicated with two folding air bags, and compressed gas jar is used to the inside of folding air bag and protection network fills air, and folding air bag and protection network all adopt nylon material, and the upper end of host computer is installed with umbrella bag, and the inside installation of umbrella bag is used for the parachute that slows down host computer landing speed, after the out of control of host computer, and compressed gas jar starts to fill air in the inside of folding air bag and protection network, makes the air cushion that forms under host computer, and the contact of host computer and ground carries out further buffering, and the existing water conservancy project unmanned plane drops and the impact force that ground produces also can easily damage the sensor problem of being located under unmanned plane.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a UAV used for remote sensing mapping in water conservancy projects. Background Technology

[0002] Unmanned aerial vehicles (UAVs) for water conservancy projects are important tools for modern water management and monitoring. Combining advanced UAV technology and remote sensing data processing capabilities, they can efficiently and accurately monitor and manage water resources. These UAVs are typically equipped with high-precision sensors and cameras, enabling them to acquire various types of data, including terrain, vegetation cover, water quality, and the status of engineering facilities.

[0003] In the field of water conservancy engineering, the application of drones has significant advantages. First, traditional water conservancy monitoring methods often require a large amount of manpower and resources, and monitoring in some remote or dangerous areas is quite difficult. The use of drones can significantly improve work efficiency and reduce labor costs. Drones can quickly cover large areas, conduct high-resolution remote sensing mapping, and acquire accurate terrain data and water body information.

[0004] Secondly, water conservancy engineering drones are typically equipped with high-end sensors such as multispectral cameras and lidar, which can capture subtle changes. For example, multispectral cameras can be used to analyze water quality and monitor algae growth and water pollution; lidar can penetrate vegetation to obtain ground elevation data, helping engineers perform terrain analysis and water flow simulation. This data can not only be used for current monitoring but also provide important information for future water resource planning and management.

[0005] Due to the numerous precision components and high cost of water conservancy engineering drones, their safety is paramount. In the event of signal loss or extreme weather conditions (strong winds, rain, snow, etc.), the drone may experience sudden stops or loss of control during flight, resulting in damage upon impact with the ground. Most existing water conservancy engineering drones are equipped with parachutes to reduce descent speed and impact during sudden stops or uncontrolled falls. However, because the sensors are located on the underside of the drone, even with the parachute reducing the impact, the remaining force can still damage these sensors. To further mitigate the impact of descent and protect the drone, a water conservancy engineering drone for remote sensing mapping is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a drone for remote sensing mapping in water conservancy projects, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a water conservancy engineering drone for remote sensing mapping, including the drone's main unit; The lower end of the main unit is connected to two brackets, and the lower end of the brackets is connected to a folding airbag. The folding airbag contains a compressed air tank, which is connected to the main unit's wiring. A protective net is connected between the two folding airbags. The protective net is interconnected with two folding airbags, and a compressed air tank is used to inflate the folding airbags and the protective net.

[0008] As a preferred embodiment of this utility model, a connecting plate is fixedly connected to the lower end of the bracket, and a folding airbag is fixedly connected to the lower end of the connecting plate.

[0009] As a preferred technical solution of this utility model, the lower end of the folding airbag is fixedly connected to a base plate for contacting the ground.

[0010] As a preferred technical solution of this utility model, both the folding airbag and the protective net are made of nylon.

[0011] As a preferred embodiment of this invention, a parachute is installed at the top of the main unit, and a parachute for slowing down the descent speed of the main unit is installed inside the parachute.

[0012] As a preferred technical solution of this utility model, the host is equipped with a first sensor for detecting the host's out-of-control state, and the first sensor's circuit is connected to the umbrella bag and the compressed air tank.

[0013] As a preferred technical solution of this utility model, the first sensor includes a gyroscope, an accelerometer, and a height sensor.

[0014] As a preferred technical solution of this utility model, the host is equipped with multiple second sensors for water conservancy surveying.

[0015] Compared with the prior art, the beneficial effects of this utility model are: In this invention, after the main unit malfunctions, the compressed air tank is activated to inflate the folded airbag and protective net, forming an air cushion under the main unit to further buffer the contact between the main unit and the ground. This addresses the problem that the impact force generated when existing water conservancy engineering drones fall to the ground can easily damage the sensors located under the drone. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the connection structure between the host and the compression folding airbag in an embodiment of the present invention; Figure 2 This is a schematic diagram of the folding airbag compression structure according to an embodiment of the present invention; Figure 3This is a schematic diagram of the connection structure between the main unit and the unfolded folding airbag in an embodiment of this utility model; Figure 4 This is a schematic diagram of the folding airbag deployment structure according to an embodiment of the present invention; Figure 5 This is a cross-sectional view of the folding airbag according to an embodiment of the present invention.

[0017] In the diagram: 1. Main unit; 11. Parachute pack; 2. Frame; 21. Connecting plate; 3. Folding airbag; 31. Compressed air tank; 32. Base plate; 4. Protective net. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5 This embodiment provides a water conservancy engineering drone for remote sensing mapping, including a main unit 1, which is a Matrice 350 RTK mapping drone. The main unit 1 is equipped with multiple second sensors for water conservancy mapping, including high-precision sensors and camera equipment, enabling effective tasks such as topographic mapping, water body monitoring, and engineering assessment. Figure 1 As shown, two brackets 2 are installed on both sides of the lower end of the main unit 1. The two brackets 2 are symmetrically arranged. After the main unit 1 flies back to the ground, the brackets 2 support the main unit 1, allowing it to stand upright on the ground. The high-precision sensor and camera equipment below the main unit 1 are located between the two brackets 2. After the main unit 1 lands on the ground, the brackets 2 can isolate the equipment from the ground.

[0020] The main unit 1 is internally equipped with a first set of sensors, including a gyroscope, an accelerometer, and an altitude sensor. The gyroscope, a TG-40 three-axis integrated fiber optic gyroscope, is primarily used to measure and maintain flight attitude, monitoring the drone's angular velocity in real time to help the control system determine the drone's tilt, rotation, and directional changes. The accelerometer, an ADXL345BCCZ-RL7 digital accelerometer, measures the drone's linear acceleration and motion state, detecting acceleration changes in various directions, including ascent, descent, and lateral movement. The altitude sensor, a CPR6001A high-precision altitude sensor, measures the drone's flight altitude, ensuring altitude control of the main unit 1 at different flight stages and monitoring its altitude information in real time. Through the coordination of the gyroscope, accelerometer, and altitude sensor, the system can detect uncontrolled descent of the main unit 1 and emit digital signals.

[0021] Specifically, when the main unit 1 begins its descent, the gyroscope detects a significant increase in tilt and rotation rate, indicating a possible loss of control. The accelerometer measures the drone's linear acceleration in all directions, particularly the vertical acceleration. During normal flight, gravitational acceleration remains around 9.81 m / s², but during a descent, the accelerometer records an increase in downward acceleration, which may even become negative, indicating that the drone is in freefall. The altitude sensor monitors the flight altitude in real time, further confirming the drone's descent status by detecting a rapid decrease in altitude. The gyroscope, accelerometer, and altitude sensor work together to quickly transmit digital signals (as per existing technology) once the system identifies the drone's descent.

[0022] like Figure 1 and Figure 3 As shown, a parachute pack 11 is installed on the upper end of the host 1. The parachute pack 11 is connected to the first sensor circuit. The parachute pack 11 is a drone parachute system with automatic and rapid opening, as described in the patent document with patent publication number CN105501449B. The parachute pack 11 contains a parachute. After the first sensor detects the falling state of the host 1, it transmits a digital signal to the parachute pack 11, which then opens the parachute inside. The opened parachute can effectively disperse the airflow and increase the air flow resistance, thereby reducing the descent speed of the host 1. The structural design and principle of the parachute pack 11 are the same as those in the patent with publication number CN105501449B.

[0023] However, in actual operation, it was found that after the main unit 1 fell from the air due to its own weight, even though the impact of the main unit 1 on the ground was reduced by the parachute, the remaining impact force would still damage the support 2 and the second sensor below the main unit 1. In order to further protect the main unit 1 and the second sensor, a folding airbag 3 was installed at the lower end of the support 2.

[0024] like Figure 2 and Figure 4 As shown, a connecting plate 21 is fixedly connected to the lower end of the bracket 2, and a folding airbag 3 is fixedly connected to the lower end of the connecting plate 21. The connecting plate 21 evenly transmits the pressure of the main unit 1 to the folding airbag 3. A protective net 4 connects the two folding airbags 3, and the interiors of the folding airbag 3 and the protective net 4 are interconnected. Figure 5 As shown, a compressed air tank 31 is fixedly connected to the lower end of the connecting plate 21, and the compressed air tank 31 is located inside the folded airbag 3. The compressed air tank 31 is a miniature air tank with a reference model of YSH501, and the compressed air tank 31 is connected to the first sensor and the main unit 1. The compressed air tank 31 consists of a tank body, a valve system, and a controller. The valve system is a DC12V normally closed miniature electromagnetic valve. After the main unit 1 falls, the first sensor transmits a digital signal to the controller. The controller is a miniature DC driver with a reference model of SD. The controller converts the digital signal from the first sensor into an electrical signal and sends it to the valve system of the compressed air tank 31. The valve system is triggered to open, causing the compressed gas in the tank body to be quickly discharged and released, rapidly filling the folded airbag 3 and the protective net 4. After the folded airbag 3 expands rapidly, it will form a protective barrier under the main unit 1. After the protective net 4 is filled with gas, the internal pressure will cause the surface of the protective net 4 to generate an outward force, which can resist the pressure applied from the outside and thus support the two folded airbags 3. At the same time, the protective net 4 protects the second sensor under the main unit 1 and prevents the ground from contacting the second sensor.

[0025] Both the folding airbag 3 and the protective net 4 are made of nylon. Nylon has the advantages of high strength, lightweight and flexibility, excellent tensile strength and wear resistance, and can withstand greater pressure and impact, ensuring the safety and stability of the folding airbag 3 and the protective net 4 during use. The relatively light folding airbag 3 and the protective net 4 will not affect the flight of the main unit 1.

[0026] During daily use, the lifting and lowering of the main unit 1 will cause the folding airbag 3 to frequently come into contact with the ground. The frequent friction between the folding airbag 3 and the ground can easily cause wear and tear on the folding airbag 3. In order to protect the folding airbag 3, a base plate 32 is fixedly connected to the lower end of the folding airbag 3. The base plate 32 is made of carbon fiber material, which can isolate the folding airbag 3 from the ground while ensuring lightness.

[0027] Compared to existing drones that rely solely on parachutes to mitigate the impact upon landing, the inflated folding airbag 3 and protective net 4 provide additional cushioning during the drone's descent, absorbing impact and reducing damage to the main unit 1, the second sensor structure, and internal components. This cushioning effect is more effective than a simple parachute, especially at lower altitudes and speeds. Furthermore, the inflated folding airbag 3 and protective net 4 allow the main unit 1 to adapt to a wider range of landing locations, such as grass, sand, and hard surfaces. The enclosed, lightweight structure of the inflated folding airbag 3 and protective net 4 maintains internal gas pressure, creating a large gas space. This design not only provides buoyancy but also effectively distributes weight across the water surface, resulting in the folding airbag 3 and protective net 4's ability to float in water. This ability allows the falling main unit 1 to land on the water undamaged.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drone for remote sensing mapping in water conservancy projects, characterized in that, include: The main unit of the drone (1); A bracket (2) is connected to the lower end of the host (1). A folding airbag (3) is connected to the lower end of the bracket (2). A compressed air tank (31) is installed inside the folding airbag (3). The compressed air tank (31) is connected to the host (1) by a line. A protective net (4) is connected between the two folding airbags (3). The protective net (4) is interconnected with two folded airbags (3), and the compressed air tank (31) is used to inflate the folded airbags (3) and the protective net (4); The lower end of the bracket (2) is fixedly connected to a connecting plate (21), and the folding airbag (3) is fixedly connected to the lower end of the connecting plate (21).

2. The UAV for remote sensing mapping of water conservancy projects according to claim 1, characterized in that: The lower end of the folded airbag (3) is fixedly connected to a base plate (32) for contacting the ground.

3. The UAV for remote sensing mapping in water conservancy projects according to claim 2, characterized in that: Both the folding airbag (3) and the protective net (4) are made of nylon.

4. The UAV for remote sensing mapping in water conservancy projects according to claim 1, characterized in that: The main unit (1) is equipped with a parachute (11) at its upper end, and the parachute (11) contains a parachute for slowing down the descent speed of the main unit (1).

5. A UAV for remote sensing mapping in water conservancy projects according to claim 4, characterized in that: The host (1) is equipped with a first sensor for detecting the out-of-control state of the host (1), and the first sensor is connected to the parachute (11) and the compressed air tank (31).

6. A UAV for remote sensing mapping in water conservancy projects according to claim 5, characterized in that: The first sensor includes a gyroscope, an accelerometer, and an altitude sensor.

7. The UAV for remote sensing mapping of water conservancy projects according to claim 1, characterized in that: The host (1) is equipped with multiple second sensors for water conservancy surveying.

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