Field Crop Spectrometer Workstation for Rapid Nutrient Sampling
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Solution Overview
Problem
Existing methods for determining nutrient levels in crops are inaccurate, time-consuming, and prone to sample mix-ups, leading to inefficient or excessive fertilizer use, which increases costs and environmental impact.
Innovation Solution
A mobile workstation equipped with a spectrometer, probe, and planar worksurface, allowing farmers to perform spectral analysis directly in the field, ensuring accurate and efficient nutrient level measurements without the need for laboratory processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If samples are taken to a laboratory for nutrient measurement, then measurement accuracy is improved, but time consumption and risk of sample mix-up increase
Solution Approach 1:
The system segments the measurement function from the laboratory setting and integrates it into a portable device that can be used directly in the field. The handheld device contains all necessary components (light source, sensor, processor) to perform spectral analysis independently, eliminating the need to transport samples to a laboratory.
Solution Approach 2:
The patent introduces a portable spectral analysis device as an intermediary between sample collection and laboratory analysis. This device enables measurements to be performed at the sampling location, acting as a bridge that eliminates the time-consuming transport and waiting period while maintaining measurement accuracy.
2Reliability
If multiple samples are collected from different field locations, then measurement representativeness is improved, but sample identification and tracking become complex
Solution Approach 1:
The device incorporates a GPS receiver that automatically records the geographic location of each measurement. This location data is stored and associated with the spectral data, providing automatic feedback that links each measurement to its field location without requiring manual sample labeling or tracking.
Solution Approach 2:
The system performs automatic location tagging and data association without requiring manual intervention. The GPS receiver and processor work together to automatically record, store, and link measurement data with location information, eliminating the need for farmers to manually track and identify samples from different locations.
3Measurement precision
If traditional spectrometers are used for nutrient analysis, then measurement capability is improved, but portability and ease of operation deteriorate
Solution Approach 1:
The patent merges multiple functions into a single handheld device: light source, spectral sensor, GPS receiver, processor, and display are all integrated into one portable unit. This consolidation maintains spectral analysis capability while enabling portability and simplifying operation for farmers.
Solution Approach 2:
The device replaces complex mechanical spectrometer systems with an integrated optical-electronic system. The use of LED or laser light sources combined with spectral sensors and digital processing eliminates the need for complex mechanical components while maintaining measurement precision.
4Productivity
If fertilizers are applied based on farmer experience, then application speed is improved, but fertilizer use efficiency deteriorates
Solution Approach 1:
The system performs preliminary spectral analysis in the field before fertilizer application decisions are made. By measuring nutrient levels directly at the crop location and providing immediate results, the system enables farmers to make informed fertilizer application decisions on-the-spot, combining speed with accuracy.
Solution Approach 2:
The device provides immediate feedback on crop nutrient status through spectral analysis, allowing farmers to adjust fertilizer application rates based on actual measured needs rather than estimates. This real-time feedback loop enables both rapid decision-making and precise fertilizer management.
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 farmers to obtain precise nutrient data quickly and conveniently, reducing fertilizer waste and environmental impact while optimizing crop yields.
Implementation Method 1
One potential technique for performing nutrient level measurement is via spectral analysis. Spectral analysis can involve the acquisition of a spectrum of the crop which can be performed via a spectrometer.
Data Source
AI summary
There is disclosed a method of performing a nutrient level measurement for a crop in the field using a mobile workstation, the mobile workstation having a casing containing a spectrometer, a probe and a planar worksurface. The method includes carrying the casing to a crop location in the field, opening the casing, thereby exposing the planar worksurface, performing a plurality of scans of the crop, including, for each one of the scans severing a sample from the crop, positioning the sample of the crop onto the exposed planar worksurface, positioning the probe onto the sample, on the planar worksurface, acquiring a spectrum of the sample with the spectrometer, via the probe, and removing the sample from the planar worksurface and subsequently to said performing the plurality of scans, closing the casing.