Automated Soil Gas Sampling System for High-Resolution Flux Monitoring
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Solution Overview
Problem
Current methods for measuring greenhouse gas emissions in agricultural fields are limited by their inability to provide high spatial and temporal resolution data, are cost-prohibitive, and require substantial labor for data collection.
Innovation Solution
A climate smart agricultural system that includes an auto-sampling assembly and a housing, capable of collecting gas samples from multiple points across a field with high frequency, using an auto-sampling mechanism that includes a syringe pump and a sample vial, and is powered by a battery with optional solar recharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If chamber-based flux measurements are used to measure greenhouse gas emissions, then measurement precision is improved, but productivity deteriorates due to substantial labor required to move chambers between bases
Solution Approach 1:
The automated chamber system performs self-service by automatically moving between measurement bases and conducting flux measurements without requiring manual intervention. The chamber system autonomously navigates to different bases, seals around them, and collects gas samples, eliminating the substantial labor previously required to move chambers between measurement locations while maintaining measurement precision.
Solution Approach 2:
The patent replaces manual mechanical operations with an automated mechanical system. Instead of researchers manually transporting chambers between bases, an automated drive mechanism moves the chamber system to predetermined bases. This substitution of manual labor with automated mechanical movement resolves the contradiction by improving productivity while preserving measurement precision through consistent, repeatable positioning.
2Productivity
If eddy-flux towers are deployed to characterize greenhouse gas fluxes continuously, then productivity is improved through continuous monitoring, but device complexity and cost increase making them cost prohibitive
Solution Approach 1:
The patent segments the continuous monitoring function into discrete, automated measurements at multiple bases. Rather than deploying a single complex eddy-flux tower for continuous monitoring, the system divides the field into multiple bases and automatically sequences measurements across them. This segmentation achieves continuous field-wide monitoring through coordinated discrete measurements, reducing device complexity and cost while maintaining productivity.
Solution Approach 2:
The system uses multiple identical, simple chamber units that can be deployed at different bases, copying the same measurement apparatus across the field. This approach replaces the single complex eddy-flux tower with multiple simpler, standardized chamber units that collectively provide continuous monitoring capability, thereby reducing device complexity and cost while maintaining continuous monitoring productivity.
3Measurement precision
If multiple bases are installed across a field to improve spatial representation, then measurement precision is improved, but loss of time increases due to substantial labor required to move chambers between bases
Solution Approach 1:
The automated chamber system performs self-service by autonomously navigating between multiple bases without requiring manual intervention. The system automatically moves from one base to the next, seals around each base, and conducts measurements, eliminating the time-consuming manual labor previously required to transport chambers between measurement locations while maintaining spatial representation accuracy through comprehensive multi-base sampling.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables frequent, high-resolution measurements of greenhouse gas fluxes across agricultural fields, reducing costs and labor while providing more accurate data for monitoring and verification of greenhouse gas emissions.
Implementation Method 1
A syringe pump draws a sample of air within the base through a needle
Implementation Method 2
The belt is affixed to the sample tray. The motor drives the belt such that the sample tray is rotated to the required positions, including the 'collection' position and the 'filling' position described supra.
Data Source
AI summary
A system and method for measuring gas emissions from a particular sample of soil. A climate smart system can be deployed in an agricultural field to monitor changes to greenhouse gas emissions from the soil. The climate smart system can operate independently of human direction and automatically collect samples from a series of locations within the agricultural field.