Automated Soil Slurry Preparation for Concurrent Chemical Analysis
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Solution Overview
Problem
Existing soil sampling processes are inefficient as they require drying and grinding of samples, which are time-consuming and labor-intensive, and do not allow for simultaneous analysis of multiple samples.
Innovation Solution
A fully automated computer-controlled sampling system that processes soil samples in their 'as collected' condition, creating a slurry with water and filtering it for analysis, enabling simultaneous and rapid analysis of multiple samples for various chemical properties without the need for drying and grinding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional drying and grinding processes are used for soil samples, then sample preparation is thorough, but processing time increases and labor intensity increases
Solution Approach 1:
The patent changes the physical state parameter of the sample preparation process by replacing thermal drying with wet slurry formation. Instead of removing water through drying, the system adds water to create a slurry that can be directly analyzed, fundamentally altering the preparation approach to eliminate time-consuming thermal processing while maintaining analytical quality
Solution Approach 2:
The patent extracts and eliminates the drying and grinding steps from the traditional sample preparation sequence. By removing these intermediate processing stages entirely and moving directly to slurry formation and filtration, the system reduces processing time while preserving the essential function of preparing samples for chemical analysis
2Measurement precision
If traditional sequential processing is used for soil samples, then each sample receives individual attention, but productivity decreases
Solution Approach 1:
The patent merges multiple sequential operations into a single integrated slurry processing stream. Multiple soil samples are combined with water simultaneously to form slurries that are then filtered and analyzed together, allowing parallel processing of multiple samples while maintaining individual sample integrity through proper mixing and filtration techniques
Solution Approach 2:
The patent establishes continuous processing flow where samples are constantly being prepared, filtered, and analyzed without interruption. The system maintains continuous operation by eliminating batch processing interruptions and ensuring uninterrupted flow from sample intake through analysis, maximizing productivity while preserving analytical quality
3Ease of manufacture
If manual drying and grinding operations are performed, then sample preparation is complete, but device complexity increases and automation decreases
Solution Approach 1:
The patent replaces manual mechanical operations (drying, grinding) with automated fluid-based processing. Instead of manual handling and mechanical size reduction, the system uses automated slurry formation, pumping, and filtration processes that are inherently more suitable for automation and continuous operation
Solution Approach 2:
The system enables self-service automation where the processing equipment performs all preparation functions without manual intervention. The automated slurry formation, filtration, and analysis system operates independently, with samples being processed automatically from intake through completion, eliminating the need for manual drying and grinding operations
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 allows for rapid and efficient analysis of soil samples, as well as other agricultural samples like vegetation and manure, improving the speed and accuracy of nutrient and chemical property determination, thereby optimizing soil amendment decisions.
Implementation Method 1
a mixer-filter apparatus which mixes the collected raw soil sample in the 'as sampled' condition (e.g. undried and unground) with water to form a sample slurry
Implementation Method 2
The mixer-filter apparatus then filters the slurry during its extraction from the apparatus
Implementation Method 3
centrifugating the slurry sample to yield a clear supernatant
Implementation Method 4
sensing or analysis for detection of the analytes and/or chemical properties such as via colorimetric analysis
Data Source
AI summary
An automated computer-controlled sampling system and related methods for collecting, processing, and analyzing agricultural samples for various chemical properties such as plant available nutrients. The sampling system allows multiple samples to be processed and analyzed for different analytes or chemical properties in a simultaneous concurrent or semi-concurrent manner. Advantageously, the system can process soil samples in the “as collected” condition without drying or grinding. The system generally includes a sample preparation sub-system which receives soil samples collected by a probe collection sub-system and produces a slurry (i.e. mixture of soil, vegetation, and/or manure and water), and a chemical analysis sub-system which processes the prepared slurry samples for quantifying multiple analytes and/or chemical properties of the sample. The sample preparation and chemical analysis sub-systems can be used to analyze soil, vegetation, and/or manure samples.