Groundwater Dynamic Monitoring System Solution
The groundwater dynamic monitoring system addresses the needs of groundwater over-extraction area management, water source protection, and geological environment monitoring. It deploys submersible level gauges in monitoring wells to track groundwater level changes in real time and configures water quality sensors to monitor basic parameters such as conductivity, pH, and temperature. Utilizing low-power RTU terminals and solar power supply systems, it enables long-term automatic monitoring and remote data transmission under unattended field conditions, providing continuous and reliable monitoring data for groundwater resource management and ecological environmental protection.
Overview
Summary
The groundwater dynamic monitoring system addresses the needs of groundwater over-extraction area management, water source protection, and geological environment monitoring. It deploys submersible level gauges in monitoring wells to track groundwater level changes in real time and configures water quality sensors to monitor basic parameters such as conductivity, pH, and temperature. Utilizing low-power RTU terminals and solar power supply systems, it enables long-term automatic monitoring and remote data transmission under unattended field conditions, providing continuous and reliable monitoring data for groundwater resource management and ecological environmental protection.
Key Advantages
Challenges
- The area of groundwater over-extraction nationwide has reached 287,000 square kilometers, with groundwater levels in key regions such as the North China Plain continuing to decline.
- Traditional manual well logging has a low frequency (monthly/quarterly), making it unable to capture the dynamic changes and sudden events in groundwater levels.
- Monitoring wells are often located in remote fields, without access to municipal electricity or network connectivity, making the deployment of traditional wired monitoring solutions extremely costly.
- Groundwater quality pollution is showing a worsening trend, but there is a lack of in-situ real-time monitoring methods, with heavy reliance on sampling and laboratory testing.
Results
- Groundwater Overexploitation Zone Comprehensive Management Monitoring Network in a Province: 280 monitoring wells deployed, covering overexploitation zones in 3 prefecture-level cities, enabling real-time tracking of recharge effectiveness, with a cumulative groundwater level rise of 1.2 meters over three years.
- A city's drinking water source protection project: 32 monitoring wells were installed around the water source area to monitor water levels and quality in real time, successfully providing early warning for an upstream pollution incident and initiating an emergency water supply plan 48 hours in advance.
- Groundwater monitoring in a geological hazard-prone area: Twelve deep monitoring wells were installed within the landslide body. During continuous heavy rainfall, abnormal rises in groundwater levels were detected, leading to the issuance of a geological hazard warning 24 hours in advance.
Solution Details
Groundwater Dynamic Monitoring System Solution
The Groundwater Dynamic Monitoring System Solution utilizes submersible level transmitters, water quality sensors, and low-power RTU telemetry terminals to achieve long-term automatic monitoring of groundwater level and water quality parameters in monitoring wells. Independent solar + lithium battery power supply ensures continuous operation in remote field environments, providing continuous and reliable monitoring data for groundwater over-extraction management, water source protection, and geological disaster early warning.
Construction Background
China faces a severe groundwater over-extraction problem, with the national over-extraction area reaching 287,000 square kilometers. The State Council's "Groundwater Management Regulations" require the establishment of a groundwater monitoring station network to achieve dual control of total groundwater extraction and water levels. Automated online monitoring is an inevitable trend for the scientific management of groundwater resources.
System Architecture
Downhole Sensing
Submersible level transmitter measures water level; conductivity/pH/temperature sensors measure water quality.
Surface Data Acquisition
Low-power RTU terminal, solar + lithium battery power supply, Beidou + 4G transmission.
Data Center
Groundwater monitoring information management platform, time-series database, water level contour maps.
Application Services
Over-extraction warning, water source safety assessment, geological disaster auxiliary warning, report statistics.
Core Functions
Continuous Groundwater Level Monitoring
The submersible level transmitter is submerged below the water surface in the monitoring well, precisely measuring water level depth via the hydrostatic pressure principle. The range covers 0-200 meters, meeting monitoring needs from shallow phreatic water to deep confined water. Data collection intervals can be flexibly set, automatically increasing during heavy rainfall.
In-situ Water Quality Monitoring
Conductivity sensors monitor changes in groundwater mineralization in real-time (seawater intrusion, pollutant diffusion), pH sensors detect acid-base abnormalities, and water temperature sensors track geothermal and seasonal changes. This enables in-situ real-time monitoring without the need for sampling and lab testing.
Over-extraction Warning & Trend Analysis
The platform automatically draws water level hydrographs, water level contour maps, and water level depression cone maps. The system automatically issues warnings when levels drop below pre-set red-line thresholds. It supports statistical analysis of water level trends to assess the effectiveness of over-extraction management.
Unattended Field Operation
The low-power RTU terminal has an ultra-low standby current. A 20W solar panel + 100Ah lithium battery can support continuous operation for 30 days of cloudy/rainy weather. Beidou satellite short message transmission covers remote areas without 4G signal, truly achieving "install and forget" operation for groundwater monitoring stations.
Recommended Product Configuration
| Monitoring Item | Recommended Product | Description |
|---|---|---|
| Groundwater Level | Submersible Level Gauge | 316L probe, range 0-200m, accuracy 0.1%FS |
| Conductivity | Conductivity Meter | Monitors salinity changes, provides seawater intrusion warning |
| pH Value | pH/ORP Meter | Monitors abnormal water acidity/alkalinity |
| Data Acquisition | Micro-power Self-powered RTU | Solar + lithium battery, Beidou + 4G dual-link |
| Conventional Monitoring | Hero V9 RTU (EC32) | For scenarios with mains power, multi-channel acquisition |
Solution Advantages
Truly Unattended Operation
Solar + Beidou, no mains power or network required, operates continuously even in deserts and Gobi regions.
Ultra-long Endurance
Micro-power design, lithium battery lasts 30 consecutive rainy days without power failure, zero annual maintenance.
Suitable for Deep Wells
Submersible level gauge range up to 200 meters, meets deep confined water monitoring needs.
Scalable Deployment
Standardized product combination, single well installation completed in half a day, suitable for building hundred-well level monitoring networks.
Product Features
High-precision Water Level Monitoring
Submersible level meter with a range of 0-200m, accuracy of 0.1% FS, resolution of 1mm, suitable for deep and shallow well monitoring needs.
In-situ Water Quality Monitoring
Conductivity sensors monitor changes in mineralization, pH sensors detect acid-base anomalies, and temperature sensors track geothermal influences.
Ultra-Low Power Design
Micro-power RTU terminal standby current <1mA, paired with a 20W solar panel and lithium battery, ensures uninterrupted operation for 30 consecutive rainy days.
Beidou + 4G Dual Link
In remote areas without 4G signal, transmission is carried out via Beidou satellite short message; in 4G-covered areas, it automatically switches to high-speed channels.
Automatic Timed Collection
Flexible collection intervals can be set from 5 minutes to 24 hours, with intensified collection during flood seasons and normal collection during dry seasons to save power.
Anti-corrosion and Long Lifespan
The sensor probe is made of 316L stainless steel with a PU cable, offering corrosion resistance and anti-permeability, with a service life of over 5 years in groundwater environments.
Approach
How we implement intelligence into your infrastructure step by step.
Requirement Analysis & Solution Design
Analyze geological conditions and hydrological characteristics to determine monitoring well locations, parameters, and data collection frequency
Equipment Selection & Installation
Select core equipment including LGF electromagnetic flowmeters, radar level sensors, and RTU telemetry terminals; complete sensor installation and communication setup
Platform Deployment & System Integration
Deploy data acquisition platform, configure data transmission protocols, and complete end-to-end system integration testing
Operations & Continuous Optimization
Establish regular inspection and remote maintenance mechanisms; continuously optimize collection strategies and alert thresholds
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