Petroleum-electric hybrid forestry inspection ultra-long endurance drone solution

Forestry inspections cover a wide area, have complex terrain, and have long operation cycles. Traditional drones’ endurance and functions cannot meet the needs. This solution takes gasoline-electric hybrid technology as the core, combines the characteristics of forestry inspections, and conducts targeted designs for power systems, endurance guarantees, and professional inspection equipment to facilitate efficient monitoring and management of forestry resources.

1. High-efficiency petrol-electric hybrid power system

(1) Power structure customization

use Intelligent series hybrid architecture , adapted to the needs of long-term cruising in forestry. It uses a 4-stroke turbocharged aviation heavy fuel engine with a maximum power of 120kW, high fuel efficiency and low vibration characteristics to ensure stable power generation. ； Equipped with a high energy density ternary lithium battery pack with a capacity of 180Ah, it supports fast charging and discharging. The intelligent energy management system can dynamically adjust engine power generation and battery output based on flight distance and load conditions to ensure efficient use of energy. For example, during large-area cruising, the engine maintains low speed and generates electricity efficiently, and the battery only provides assistance. ； When hovering for shooting or responding to emergencies, the battery quickly replenishes power.

(2) Terrain environment adaptation

Optimize the power system according to the complex terrain and climate of forest areas:

1. Anti-tangle design : The propeller adopts serrated edges and special coating to reduce the risk of being entangled by branches during flight.； A protective net is installed in the motor compartment to further improve safety.

2. Enhanced high-altitude performance : Equipped with an altitude adaptive adjustment system that automatically adjusts the engine air intake volume and fuel injection ratio according to changes in air pressure. It can still maintain more than 85% of the power output at an altitude of 3,000 meters, ensuring stable flight of the drone in mountainous forests.

2. Ultra-long battery life and deep guarantee

(1) Energy system upgrade

1. Large capacity fuel reserve : Designed with a streamlined built-in fuel tank with a capacity of 80L, combined with lightweight high-strength composite materials to ensure fuel storage while reducing the weight of the fuselage. The fuel pipeline and injection system are optimized, and advanced fuel atomization technology is used to make the fuel burn more fully, improve fuel utilization, and achieve an ultra-long cruising range of 500 kilometers.

2. Battery performance enhancement : Using a new graphene composite lithium battery, the energy density reaches 280Wh/kg, which is 25% higher than traditional lithium batteries. The battery pack is equipped with an intelligent temperature control system, which uses liquid cooling circulation and heating elements to ensure that the battery operates normally at ambient temperatures of -15°C - 50°C, extending battery life and endurance.

(2) Aerodynamic optimization design

1. Large aspect ratio wing : Using a large aspect ratio wing with a wingspan of 9 meters, the lift-to-drag ratio is as high as 20, which effectively reduces flight resistance and reduces power consumption. The wings adopt a foldable design for easy transportation and storage. After unfolding, a high-strength locking device ensures flight stability.

2. Bionic shape optimization : The fuselage imitates the streamlined contours of birds to reduce air resistance.； The tail is equipped with adjustable angle horizontal tail and vertical tail to maintain the best aerodynamic attitude during cruising and reduce energy consumption. ； When flying at low altitude or hovering, the tail angle can be adjusted to enhance stability.

3. Professional forestry inspection system

(1) Multispectral monitoring equipment

1. High resolution multispectral camera : Equipped with a 12-band multispectral imaging system, covering visible and near-infrared bands, it can obtain key data such as Vegetation Health Index (NDVI) and Leaf Area Index (LAI) with a resolution of 0.1 meters. Through image analysis, disease and insect pest areas, drought-stressed trees and traces of illegal logging can be quickly identified.

2. LiDAR : Equipped with 32-line lidar, scanning frequency 30Hz, detection range 300 meters, it can generate high-precision three-dimensional terrain and forest canopy models, which can be used for forest resource census, tree height measurement, terrain mapping and other tasks to provide accurate data for forestry planning.

(2) Intelligent inspection function

1. Independent route planning and dynamic adjustment : Based on GIS maps and forest terrain data, the ground control station can automatically generate inspection routes and support customized waypoints, flight altitudes, shooting angles and other parameters. The visual sensor and GPS positioning system carried by the drone can sense environmental changes in real time, automatically detour when encountering obstacles, and synchronize route change information to the ground terminal.

2. Intelligent early warning of abnormal situations : Built-in deep learning algorithm can automatically identify abnormal situations such as forest fires, fallen trees, and illegal logging. Once an abnormality is detected, an alert is immediately sent to the ground control center and high-definition images of the scene, positioning coordinates and abnormality type are transmitted to facilitate forestry staff to respond quickly.

3. Real-time data processing and analysis : The drone is equipped with an edge computing module, which can perform real-time preprocessing on the collected multispectral images and lidar data, extract key information and compress and transmit it. The ground control center uses professional analysis software to generate visual results such as forestry resource monitoring reports and disaster warning maps to improve the efficiency of forestry management decision-making.

4. Expansion of forestry application scenarios

1. Forest resources census : Conduct a rapid and comprehensive resource survey on a large area of ​​forest to obtain information such as tree species, quantity, distribution, growth status, etc., to provide data support for forestry resource management and planning.

2. Pest and disease monitoring : Regularly inspect forest areas, use multi-spectral imaging technology to monitor the health of trees, and timely detect early symptoms of pests and diseases, provide a basis for precise prevention and control, and reduce disaster losses.

3. Forest fire prevention patrol : Equipped with an infrared thermal imager and smoke sensor, it conducts daily patrols in forest areas, monitors high temperature spots and smoke signals in real time, and provides early warning of forest fires to avoid the spread of fires.

4. Ecological Restoration Assessment : Conduct regular inspections of ecological restoration areas such as returning farmland to forest and planting trees, and compare monitoring data from different periods to evaluate the effects of ecological restoration and guide follow-up work.