(1) Unmanned Aerial Vehicle (UAV) (flow measurement and topographic survey):
1) UAV equipment requirements:
no less than quadrotor, with propellers, arms, landing gear, and gimbal components adopting a folding structure;
flight parameters: maximum level flight speed ≥14m/s, maximum climb speed ≥5m/s, maximum cruise speed ≥9m/s, maximum flight altitude ≥5000m;
▲ can carry multiple modules and quickly replace payloads;
capable of achieving a maximum payload ≥2.5kg;
can be disassembled and placed in a three-proof transport case;
maximum takeoff weight ≥9kg;
the UAV can complete takeoff and landing within an area of 3M×3M;
equipped with intelligent battery monitoring and management functions, capable of achieving short-term dynamic discharge of the battery, measuring dynamic load voltage, dynamic discharge current, and other data; automatically balancing cell voltage to keep the battery within a reasonable range in real time, extending battery life;
▲ endurance: no-load endurance ≥40 minutes; when carrying a payload ≥2.5kg, endurance ≥25 minutes;
the aircraft has a wind resistance capability of above level 7;
Equipped with a laser height-fixing module to ensure precision and stability in takeoff, landing, and flight positions;
Equipped with a radar obstacle avoidance module that can automatically identify obstacles within 30 meters ahead, trigger an alarm, and return to the starting point;
Configured with high-definition low-latency image transmission, capable of high-definition real-time video transmission and high-definition recording, allowing real-time transmission of on-site conditions to a handheld terminal;
▲ The contractor must ensure that each drone corresponds to a branch office with at least 3 personnel who have obtained a drone pilot's license;
▲ Each set of equipment must be equipped with a terminal that is compatible with the equipment and meets the requirements for operation and data analysis processing;
2) Remote controller:
Display screen: 7-inch or larger touch LCD screen;
IP protection level: IP54 or higher;
Operating ambient temperature: -20℃~50℃;
3) Flight camera:
Resolution: 1080p;
4) On-board high-precision surveying and mapping lidar
Range: 450m (reflectance 50%, 0 klx);
Horizontal accuracy: ≤6cm@150m;
Vertical accuracy: ≤5cm@150m;
Ranging accuracy: ≤3cm@150m;
Scanning mode: non-repetitive scanning, repetitive scanning;
Laser safety level: Class 1;
Sensor: 4/3 CMOS, effective pixels 20 million;
Aperture: f/2.8 to f/11;
Stabilization system: 3 axes (pitch, roll, yaw);
Mechanical angle range: pitch: -130° to +40°; translation: ±100°;
Data format: supports exporting point cloud models in the following standard formats: PNTS/LAS/PLY/PCD/S3MB;
Configuration software: includes flight mission, control software, model reconstruction software (supports various visible light accurate and efficient 2D and 3D reconstruction, laser radar data processing);
5) Flow Measurement Radar
Operating Frequency: ≥24GHz;
Velocity Measurement Range: 0.3~15m/s;
Velocity Measurement Accuracy: ±0.01m/s;
Distance Measurement Range: 0~45m;
Real-time Monitoring: Capable of real-time monitoring of flow velocity;
Data Recording, Historical Data, Video Playback;
Video Resolution: 1080p, 30fps; 720p, 60fps;
Protection Level: IP44 or above;
(2) Drone Nest:
Operating Ambient Temperature: -20℃~60℃;
Shell Material: Stainless Steel;
IP Protection Level: IP54;
▲Drone Recovery Method: RTK + Visual Recognition for Precise Landing;
Night Landing: Supports autonomous night landing;
▲Drone Battery Replacement Method: Supports manual/automatic battery replacement;
Automatic Battery Swap Time: ≤20S;
▲Standard Battery Quantity: 2 or more;
Battery Capacity: 4 or more;
Network Access: Supports Ethernet, 4G, 5G;
Thermostat Equipment: Built-in thermostat equipment;
Safety Protection: Supports undervoltage, overload, and power failure protection;
Control Equipment:
Communication: Supports docking through API interface;
Online UAV route planning: Support for drawing UAV mission routes in 3D on the platform, support for online route planning during UAV operations on preset mission routes, and flying along the new route;
Autonomous obstacle avoidance: Support for automatic route planning and obstacle avoidance by the UAV based on backend 3D tilt models or elevation maps and other geographic information;
▲Adaptive power return: Support for the UAV to automatically return based on adaptive power according to wind speed, distance, flight power, etc.;
Remote control of UAV: During the UAV's flight, the gimbal can be remotely controlled at any time to adjust the camera's video angle and zoom, supporting gimbal XY-axis rotation, quick centering, one-click orientation, zoom, and other operations;
Gimbal:
Mounting expandability: Support for carrying sensors such as triple-beam pods, loudspeakers, and warning flashing lights simultaneously;
Servo platform: Azimuth rotation: 360°×n, pitch rotation: -120° to +90°, roll rotation: -60° to +60°;
Weather station:
Overall requirements: Set up an automatic weather station at a distance of 5 meters to 10 meters from the drone nest, providing a foundation of approximately 1m*1m. The weather station should be located to the north of the drone nest;
Operating temperature: not less than -20~60°C;
Sensor configuration: temperature, humidity, air pressure, wind speed, wind direction, rainfall;
Measurement frequency: not more than 20Hz (wind speed, wind direction), not more than 5Hz (temperature, humidity, air pressure, rainfall);
Measurement Range: Temperature: not less than -30°C to 70°C, Humidity: 0 to 100%RH, Atmospheric Pressure: not less than 500 to 1000 hPa, Wind Speed: not less than 0 to 30 m/s, Wind Direction: 0 to 359.9°, Precipitation: 0 to 200 mm/h;
Resolution: Temperature: not greater than 0.1°C, Humidity: not greater than 0.1%RH, Atmospheric Pressure: not greater than 0.1 hPa, Wind Speed: not greater than 0.1 m/s, Wind Direction: not greater than 0.1°, Precipitation: not greater than 0.1 mm;
Error: Temperature: ±0.5°C, Humidity: ±5%RH, Atmospheric Pressure: ±0.5 hPa (0 to 30°C), Wind Speed: ±0.5 m/s, Wind Direction: ±5°;
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