The HF3000 electronic buoy system is composed of two main components: an intelligent current meter and an intelligent management platform. The current meter integrates several advanced modules, including a high-precision positioning board, GNSS antenna, 4G communication module, solar power system, and intelligent retrieval mechanism. Using GNSS positioning technology, the device captures real-time data on location, time, flow velocity, and direction. This information is transmitted via the built-in 4G module to a designated management platform, enabling users to monitor the status of each current meter across various locations and analyze river flow conditions over different time periods.

This system offers valuable support for applications such as hydrological monitoring, water resource planning, flood early warning, and ecological research in river environments.

• Compact integration of core components: large-capacity primary battery, backup battery, solar panel, GNSS ceramic antenna, high-precision positioning module, and 4G module
• Extended operational endurance of up to 48 hours under normal conditions
• Built‑in lifting ring enables deployment via drone
• Solar charging system maintains backup battery power, ensuring continued alarm functionality even after the main battery is depleted
• Intelligent retrieval aid with automatic night illumination for easy equipment recovery
• Hydrodynamically optimized design ensures stable operation in diverse river conditions, with no tipping or spinning
• IP67-rated enclosure offers waterproof, dustproof, shock-resistant, and drop-resistant protection
• Threaded base allows attachment of counterweights to suit different flow environments
• User-friendly monitoring platform displays real‑time data including position and flow rate
• Full‑frequency 4G module ensures reliable connectivity across networks
• Remote firmware upgrade capability for multiple modules
• Low‑maintenance design and strong cost efficiency for long‑term deployment

• Positioning accuracy: sub-meter level
• Satellite tracking: 64 channels, supporting BDS, GPS, Galileo, GLONASS, QZSS, and SBAS
• Speed accuracy: 0.01 m/s (GNSS)
• Data update rate: 1 Hz/5 Hz/10 Hz
• Ceramic antenna frequency bands: L1: 1575.42±1.023 MHz, B1: 1561.098±2.046 MHz
• Impedance: 50ohm
• Gain: 4.5db

• Temperature: -40℃ ~ 85℃
• Waterproof and dustproof: IP67 rating

• Main battery: 11000mAH
• Auxiliary battery: 50mAh
• Charging power supply: DC 5V/2A
• Operating voltage: 3V~4.2V
• Indicator lights: power light, satellite search light, upload light
• Other: solar panel, recovery indicator light

• USB transmission port
• Key switch

• Display: longitude, latitude, speed, time, direction
• Upgrade: via remote upgrade
• Query: Supports queries based on specified flowmeters and specified time
• Flow measurement line: Supports manual addition of flow measurement locations, displaying various information when passing through the location