Soil Tester Optical Measurement System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current soil testing methods are inadequate for efficiently determining chemical properties such as pH levels and nutrient concentrations in soil samples, often requiring complex equipment and providing results in difficult-to-understand formats.
Innovation Solution
A soil testing system comprising a housing with a sampling apparatus that includes a photodetector and light source, which measures the optical properties of a solution formed by combining a soil sample with a reagent, allowing for the determination of chemical properties like pH, nitrate, and potash levels through changes in light transmission, displayed in a user-friendly format.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex equipment is used for soil testing, then measurement precision is improved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent replaces complex mechanical and chemical analysis equipment with an optical measurement system. A light source and photodetector measure optical properties (absorbance, transmittance) of soil solutions, substituting traditional mechanical mixing, filtration, and chemical titration equipment. This reduces device complexity while maintaining measurement precision through optical detection.
Solution Approach 2:
The patent changes the measurement parameter from direct chemical analysis to optical property measurement. By measuring light absorption and transmission characteristics of soil extracts, the system determines chemical properties (pH, nutrient content) through optical parameter changes rather than complex chemical reactions, simplifying the overall system.
2Measurement precision
If traditional soil testing methods are used, then measurement precision is improved, but ease of operation deteriorates and results are difficult to understand
Solution Approach 1:
The patent introduces an intermediary processing layer that automatically interprets optical measurements and translates them into meaningful soil chemical property results. The system mediates between the simple optical measurement and the complex chemical analysis, providing user-friendly outputs like pH levels, nutrient concentrations, and fertilizer recommendations without requiring user expertise in chemical analysis.
Solution Approach 2:
The system provides feedback in the form of actionable recommendations based on measured soil properties. By comparing measured values against optimal ranges and providing guidance on fertilizer application and soil adjustments, the system makes the results immediately useful and easy to interpret for end users.
3Measurement precision
If traditional soil testing equipment is used, then measurement precision is improved, but productivity deteriorates due to time-consuming procedures
Solution Approach 1:
The patent replaces time-consuming mechanical procedures (filtration, titration, multiple chemical reactions) with rapid optical measurements. The light source and photodetector can quickly measure absorbance and transmittance of soil extracts, providing results in minutes rather than hours, significantly improving productivity while maintaining precision.
Solution Approach 2:
The optical measurement system allows for continuous and rapid analysis. The light source can continuously illuminate the sample and the photodetector continuously monitor optical properties, enabling fast data acquisition without the intermittent steps required by traditional methods, thus improving testing throughput.
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
Enables accurate and user-friendly measurement of soil chemical properties, facilitating informed decisions on soil adjustments for optimal vegetation support and fertilizer application, with potential applications beyond soil testing in water and chemical analysis.
Implementation Method 1
The photodetector is mounted along a portion of the interior sampling chamber and has a variable resistance determined by a property of incident light
Implementation Method 2
measures the optical properties of a solution formed by combining a soil sample with a reagent, allowing for the determination of chemical properties like pH, nitrate, and potash levels through changes in light transmission
Data Source
AI summary
A soil tester is disclosed, and comprises a housing and a sampling apparatus. The housing includes an interior sampling chamber configured to receive a sample container. The sampling apparatus comprises a photodetector and a light source. The photodetector is mounted along a portion of the interior sampling chamber and has a variable resistance determined by a property of incident light. The light source is mounted to the interior sampling chamber in a transmissive orientation relative to the photodetector so that a beam of light can be transmitted from the light source to the photodetector through the interior sampling chamber. A display on the housing is responsive to the photodetector.