Smart Water Conservancy

Open Channel Flow Monitoring System Solution

Open channels, as common water conveyance channels in nature and hydraulic engineering, are widely found in rivers, irrigation canals, urban drainage networks, and other scenarios. Accurate monitoring of their flow is a crucial foundation for rational water resource allocation, flood control and drought relief decision-making, and hydraulic engineering management. The Open Channel Flow Monitoring System can measure water flow in open channels in real-time, providing reliable data support for water resource measurement, water usage scheduling, and ecological protection. It is a key technological equipment for achieving refined water resource management.

Overview

Summary

Key Advantages

High-Precision Measurement for Partially-Filled Pipes & Complex Flow Regimes

Strong Anti-Interference & Environmental Adaptability

Easy Installation & Low Retrofit Cost

Low Power Consumption & Stable Data Transmission

Intelligent Data Processing & Early Warning

System Compatibility & Scalability

Challenges

Accuracy Bottleneck in Adapting to Complex Flow Regimes & Channel Cross-Sections
Corrosion & Wear from Harsh Water Quality & Environments
Installation Constraints & Construction Limitations
Stability Challenges in Power Supply & Communication
High Operation & Maintenance Costs and Calibration Difficulties

Results

Pingyang County Ecological Flow Verification & Guarantee Pilot Project
Hangzhou Xihu District Liuxia Sub-district Mountain-Water Diversion Monitoring Service Project
Shanghai Drainage Group Binhai New Area Drainage Monitoring Project

Solution Details

Open Channel Flow Monitoring System Solution

The Doppler flowmeter is an instrument used for velocity and flow rate detection in applications such as rivers, open channels, and pipelines. It employs ultrasonic detection technology, offering high measurement accuracy, high stability, minimal influence from environmental factors, no moving parts, low maintenance frequency, and high operational reliability. It is the preferred product for both online and portable measurements.

Key Advantages of the Doppler Flowmeter

Compact size, small wetted surface area, and streamlined profile, minimizing impact on flow regime.
Utilizes Modbus communication protocol and RS485 bus for communication.
No mechanical moving parts, eliminating issues like sediment blockage or entanglement with aquatic weeds and debris.
Fully electronic design, wide voltage power supply, low power consumption, and no mechanical components.
Features accurate and stable measurement, high reliability, and strong anti-interference capability.
Wide application range, suitable for various water environments from tap water to Yellow River water.

Device Parameters

Measurement Principle

Ultrasonic Doppler

Communication

RS485, Modbus

Power Supply

Wide Voltage, Low Consumption

Product Features

High-Precision Measurement for Partially-Filled Pipes & Complex Flow Regimes
Strong Anti-Interference & Environmental Adaptability
Easy Installation & Low Retrofit Cost
Low Power Consumption & Stable Data Transmission
Intelligent Data Processing & Early Warning
System Compatibility & Scalability

Approach

How we implement intelligence into your infrastructure step by step.

Site Survey & Requirement Confirmation

Investigate open channel cross-section shape, flow conditions (velocity range, water level fluctuation), and water quality characteristics (sediment content, corrosiveness). Clarify requirements for monitoring accuracy, data reporting frequency, and alarm thresholds. Determine installation points and assess power supply and communication conditions.

Solution Design & Equipment Selection

Select appropriate Doppler flowmeter model. Determine installation method (bracket wall-mounting, channel bottom fixing, bridge suspension). Design power supply solution (solar + battery) and communication solution.

Equipment Installation & Commissioning

Install Doppler flowmeter probe, adjusting its immersion depth and angle. Connect data acquisition terminal to power supply and communication modules. Power on to test probe signal strength, calibrate velocity measurement zero point, and input open channel cross-section parameters.

System Integration & Data Verification

Establish data link from "probe - acquisition terminal - cloud platform". Test data transmission stability. Compare with standard flow measurement data to correct flow calculation model parameters. Configure alarm thresholds and simulate flow exceedance scenarios to verify alarm notification functionality.

Trial Operation & Optimization

Conduct 1-2 weeks of trial operation, covering different conditions such as sunny/rainy weather and high/low water levels. Monitor equipment operation status, troubleshoot issues like data deviation and communication interruption. Optimize probe installation position and parameter configuration to improve measurement accuracy.