System Overview
The Hydrological Monitoring System realizes real-time collection, submission, and processing of data such as water level, precipitation, flow, velocity, water quality, gate opening degree, and soil moisture in river basins. It provides scientific basis and effective information sharing for flood control and drought relief, ensures the safety of people's lives and property, and meets the needs of water conservancy and economic and social development for hydrological services.
Policy Background
In January 2022, the "14th Five-Year Plan for Water Security Guarantee" was issued, proposing overall requirements such as "accelerating the construction and upgrading of hydrological monitoring station networks for major rivers and their important tributaries and provincial administrative boundaries, accelerating the improvement of the hydrological monitoring system for small and medium-sized rivers with a drainage area of less than 3,000 square kilometers in key flood-prone areas, and improving the coverage of hydrological monitoring for small and medium-sized rivers".
System Composition

Functional Features
● Comprehensive Hydrological Monitoring:
Meets the requirements of various hydrological monitoring stations, including water level, precipitation, flow, velocity, water quality, gate opening degree, soil moisture, etc.
● Main and Backup Dual-Channel Communication:
More reliable transmission. Main channel (4G/5G/NB-IoT/Optical Fiber), backup channel (Beidou Satellite). Automatically switches to the backup channel when the main channel signal is poor.
● Multi-Level Reporting:
Meets the management needs of provinces, cities, counties, and towns.
● Compatible Reporting Modes:
Automatic reporting + response mode. Automatic alarms for monitoring point data/equipment abnormalities.
● Dual-Way Historical Data Storage:
Historical data stored in both the monitoring center platform and the telemetry terminal unit.
● Compliant with Standards:
In line with the "Standard Hydrological Monitoring Data Communication Protocol", successfully docking with provincial platforms.
Widely Applied in National/Provincial Projects: Successfully docking with provincial platforms.
● Hydrological monitoring projects in the Yellow River Basin and water level monitoring projects in the Yangtze River Basin.
● Reservoir safety monitoring projects in Shandong, Anhui, Hubei, Hunan, Jiangxi, Yunnan, Guangdong, Gansu, Xinjiang, etc.
● Flash flood disaster monitoring and early warning projects in Gansu, Fujian, Hebei, Guizhou, Ningxia, Inner Mongolia, Sichuan, Shaanxi, etc.
● Small hydropower station ecological flow supervision projects in Yangtze River Economic Belt provinces such as Fujian, Jiangxi, Sichuan, Hunan, Chongqing, Zhejiang, Jiangsu, etc.
Main Functions
● Information Collection and Automatic Abnormal Alarm:
Hydrological data: Water level, precipitation, flow, water quality, etc.
On-site images/videos of monitoring stations.
Operating status, power supply, communication of monitoring station equipment.
● Data Storage and Historical Query:
Circular data storage, no data loss when power is off.
Support historical data export.
Can store data for more than 1 year.
● Intelligent Reporting: Meet various monitoring requirements.
Multi-center reporting, facilitating multi-level management of provinces, cities, counties, and towns.
Compatible reporting modes: Automatic reporting + polling-response.
Timed reporting and alarm-triggered reporting; reporting interval adjustable.
Automatic data retransmission when the network is restored.
● Flexible Parameter Setting and Easy Maintenance:
○Local parameter setting via equipment serial port or Bluetooth.
○Remote parameter setting via PC software in the monitoring center.
○Collection and reporting intervals, alarm thresholds adjustable on demand.
● Dual-Channel Transmission: Ensure stable data transmission.
○Main channel: 4G/5G/NB-IoT/short message/optical fiber, etc.
○Backup channel: Beidou satellite communication.
○Automatic switch to the backup channel when the main channel signal is poor.
● Multiple Communication Protocols: Seamless docking with central platforms.
Standard hydrological protocol,
Standard water resources protocol,
MQTT protocol.
Customizable other protocols.
Product Features
Low-Power Telemetry Terminal Unit (DATA-6311B/6301B)

● Ultra-low power consumption.
● 4G/5G/NB-IoT communication.
● Power supply: Solar energy/mains.
● Rich interfaces: 10 channels of AI/DI, 3 channels of DO, 1 debugging serial port, 2 channels of VEXT, 5 channels of RS232/RS485/PI.
Video Telemetry Terminal Unit (DATA-7415A/7415)

● Linux operating system.
● 7-inch color touch screen.
● Video data overlay transmission.
● 4G/5G/NB-IoT + Ethernet communication.
● Rich interfaces: 5 channels of RS232/485, 6 channels of AI, 6 channels of DI/PI, 6 channels of DO, 2 channels of USB, 1 SD card slot, 1 debugging serial port, 1 RJ45 network port.
Beidou-3 + 4G Telemetry Terminal Unit (DATA-6380)

● Highly integrated and integrated.
● Beidou short message + 4G/5G/NB-IoT communication.
● RNSS + Beidou positioning.
● Lightning-proof, rain-proof, and sun-proof.
● Power supply: Mains/solar energy, built-in rechargeable lithium battery.
● Interface configuration: 2 channels of RS485/232 serial ports, 2 channels of AI/DI, 1 pulse meter interface.
