Ambient Ground-Gas Sensor with Remote Telemetry Tuning
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Solution Overview
Problem
Current gas monitoring systems are inadequate for accurately measuring both gas concentration and flow-rate of ambient ground gases, particularly at low magnitudes, due to cross-interference issues and the need for manual data connection and adjustments, which complicates high-frequency monitoring and increases costs in risk assessment and remediation processes.
Innovation Solution
A distributed ambient ground gas monitoring system with a sensing device that measures both gas concentration and low-magnitude flow-rates at high frequency, featuring a telemetry module for remote tuning of measuring parameters, enabling bilateral data communication and reducing the need for manual adjustments and physical interchanging of connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual field balancing with handheld monitoring equipment is used, then operators can measure gas composition at individual wells, but the measurement frequency and response time are insufficient due to the large number of wells and unpredictable gas composition variations
Solution Approach 1:
The system enables automatic field balancing where the monitoring system itself performs the measurement and control functions without requiring manual operator intervention at each well. Multiple sensors continuously monitor gas composition and automatically adjust extraction rates, allowing the system to serve itself in maintaining optimal gas quality across all wells simultaneously.
Solution Approach 2:
The patent replaces manual mechanical field balancing operations with an automated electronic monitoring and control system. Sensors, data processors, and automated valves substitute for handheld equipment and operator actions, enabling continuous high-frequency measurements and immediate response to gas composition changes across the entire landfill site.
2Productivity
If automated field balancing systems are implemented to increase measurement frequency, then response time improves, but the systems fail to measure gas flow-rate and only focus on gas quality adjustment
Solution Approach 1:
The monitoring system is designed with multi-functionality to perform both gas composition analysis and gas flow-rate measurement simultaneously. By integrating multiple sensor types and measurement capabilities into a single unified system, the patent achieves comprehensive gas monitoring that addresses both quality and quantity parameters without requiring separate dedicated systems.
3Measurement precision
If traditional separate systems are used for gas concentration and flow-rate measurement, then each measurement function is specialized, but the systems require manual data connection and physical interchanging of connections which increases complexity and cost
Solution Approach 1:
The patent combines gas concentration sensors, flow-rate sensors, data processing capabilities, and control functions into a single integrated monitoring system. This unified design eliminates the need for separate systems requiring manual data connection and physical interchanging of connections, reducing overall system complexity while maintaining specialized measurement capabilities through modular sensor components.
Data Source
AI summary
A gas sensing device has a power source, data processing means and a memory for storing sampling configuration data and sensed data. Sensing means samples ambient gas adjacent the device according to first sampling configuration data and outputs sensed gas concentration data and sensed gas flow data. A telemetry module communicates the sensed data to a remote terminal and receives second sampling configuration data from the remote terminal for updating the first sampling configuration data. A gas monitoring system comprises the terminal and at least one gas sensing device remote from the terminal. The sampling configuration data comprises data representative of a frequency and duration of gas flow measurement, data representative of a frequency and duration of gas concentration measurement, and data representative of an offset time corresponding to a time interval between a gas flow measurement and a gas concentration measurement.