Rivers and Lakes Environmental Monitoring Solution: Intelligent Sentinel Guarding Surface Water Ecology

Industry Pain Points and the Necessity of Online Monitoring

Rivers, lakes, and other open surface water bodies have wide geographical ranges and strong mobility. Traditional manual sampling modes have long faced severe challenges.

Industry Problems

• Extremely difficult cross-border traceability: River systems stretch for tens of kilometers with numerous sewage outlets along the way. When cross-section water quality exceeds standards, it is extremely difficult to accurately locate the pollution source due to lack of continuous spatial data.

• Time blind spots for illegal and secret discharges: Illegal enterprises often conduct intermittent secret pipe discharges at night or during heavy rain. Monthly manual sampling is like finding a needle in a haystack.

• Difficult quantitative prediction of eutrophication: Lake water bodies are relatively static, and non-point source pollution easily accumulates in summer and autumn, causing cyanobacterial blooms. Lack of high-frequency continuous data makes it impossible to establish scientific ecological evolution trend models.

Why Online Monitoring is Needed?

Online monitoring can shorten the analysis frequency to minute-level, issuing early warnings at the initial stage of pollution and gaining golden processing time for interception and diversion. This is a rigid technical requirement for implementing the "River Chief System" information assessment and carrying out cross-border section ecological compensation.

YEXsensor Solution

The system adopts highly integrated multi-parameter water quality probes, mounted on field self-powered buoys or standardized shore stations. It overcomes the problem of easy biofilm and moss growth in the field through fully automatic cleaning mechanisms, and combines 4G and wireless local area networking to solve communication bottlenecks in remote waters, capture subtle water quality changes, and provide tamper-proof digital evidence for environmental law enforcement.

Rivers and Lakes Environmental Monitoring Solution Application Scenarios

• Provincial boundary sections: Deployed at river boundaries across administrative regions as digital scales for defining upstream and downstream watershed pollution responsibilities.

• Major river and lake sewage outlets: Focus on industrial parks and wastewater treatment plant mixing zones to strictly prevent excessive discharge.

• Urban inland rivers and landscape lakes: Continuous effect tracking for black and odorous water body treatment and ecological wetland restoration core indicators.

• Large reservoir inflow tributaries: Set up defenses at key sections where tributaries join the main stream to protect downstream reservoir water source ecology.

Rivers and Lakes Environmental Monitoring Solution System Components

1. Industrial-grade Water Quality Sensors (Physical Perception Layer)

• YEX-S1-PH pH Sensor: Double salt bridge, solid electrolyte glass electrode, resistant to complex ion chemical interference.

• YEX-S1-RDO Dissolved Oxygen Sensor: Optical fluorescence method, no oxygen consumption, accurate measurement even in static water bodies.

• YEX-S1-ZS Infrared Turbidity Sensor: 90° infrared scattered light measurement, automatically eliminates background color and scattering drift.

• YEX-S1-EC Conductivity Sensor: Four-electrode technology, strong anti-polarization and anti-fouling ability.

• Built-in temperature sensor with automatic hardware-level compensation.

• Optional: YEX-S1-COD (reagent-free UV254) and YEX-S1-CHL (Chlorophyll a).

2. Intelligent Data Collector (Telemetering Terminal RTU)
   IP67 protection, responsible for timed sensor wake-up, self-cleaning control, massive local data storage, and multi-channel alarm triggering.

3. Network Transmission Layer
   4G full network mode for covered areas.
   Local wireless self-networking for deep mountain valleys and nature reserves.

4. Solar All-weather Power Supply System
   60W–100W solar panels + 40Ah–60Ah batteries, supporting more than 10 days of continuous rainy operation.

5. YEXsensor Watershed Environmental Big Data Platform
   GIS map, time-series curves, over-limit alarms, compliance report export, MQTT & HTTP API.

Monitoring Parameters and Operating Mechanism

System Operating Mechanism

The system remains in "deep sleep" mode (standby current < 0.2mA). At preset sampling times (e.g., every 15 minutes), the collector wakes up, issues cleaning commands, performs measurements after brush cleaning, applies digital filtering, and uploads data via 4G or local wireless to the cloud platform.

System Functional Features

• In-situ self-cleaning, completely eliminating manual maintenance

• Pure physical measurement, zero harmful waste liquid discharge

• Supports offline data buffering and automatic retransmission

Customer Value and Benefits

• Strong support for environmental law enforcement with 24-hour continuous curves

• Shift from "emergency rescue" to "routine prevention"

• Significantly reduces system construction costs (over 70% savings)

Recommended Product List

1. In-situ Multi-parameter Water Quality Integrated Probe (Model: NBL-WQ-MPS-5B): Integrates pH, optical DO, turbidity, conductivity, and temperature in one high-strength stainless steel housing with central self-cleaning brush.

2. Field Self-powered Data Buoy System (Model: YEX-BUOY-120): 1.2m diameter high-strength PE buoy with wireless terminal, 60W solar panel, navigation light, and anti-theft mooring kit.

FAQ

Q1: Is the buoy system safe in the wild against flood scouring or boat collisions?
Answer: YEX-BUOY-120 uses impact-resistant high-density polyethylene (PE) material filled with high-density polyurethane foam. It adopts deep heavy-duty mooring and is equipped with high-brightness LED navigation lights and GPS/Beidou positioning with three-axis acceleration sensors for immediate emergency alarms upon abnormal displacement.

Q2: Will the optical fluorescence dissolved oxygen sensor frequently give false alarms in algae-covered environments?
Answer: The fluorescence method has excellent physical anti-interference. Combined with the self-cleaning mechanical brush that operates before each collection, it effectively removes algae and moss. Regular maintenance every 3–6 months prevents false alarms.

Q3: Why use a four-electrode conductivity meter instead of a conventional two-electrode one?
Answer: Two-electrode sensors are prone to polarization and severe reading deviation due to scaling. Four-electrode technology uses two current electrodes and two voltage electrodes with constant current field to automatically offset polarization errors, offering superior anti-fouling performance suitable for high-turbidity natural waters.

Q4: How does the system connect when there is no 4G signal in many river canyons?
Answer: For extreme blind zones, the system offers local wireless self-networking to relay data to shore gateways several kilometers away, or upgrades to Beidou short message communication for global coverage.

Contact Us

For more detailed system engineering, multi-site networking cases, or customized selection and quotation, please feel free to contact our senior IoT solution engineers.

Technical Consultation: +8615111147890

Email: sales@yexsensor.com