Grain Yield Detection Using Volumetric Granary and Weight Calibration
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Solution Overview
Problem
Current grain yield detection methods during harvesting face challenges such as low precision due to vibration, moisture content sensitivity, and complexity in calibration, particularly with impulse, photoelectric, γ-ray, and weighing type sensors.
Innovation Solution
An apparatus combining dynamic volume measurement with static weight calibration using a system comprising left and right volumetric granaries, weighing sensors, a push board, and a control circuit module for real-time grain yield detection, which includes wireless communication and electromagnets to manage grain flow and calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a weighing type sensor is used for dynamic weighing, then calibration is easy, but measurement precision is low due to harvester vibration
Solution Approach 1:
The system divides the measurement process into two independent segments: (1) static weight calibration performed offline on a stable platform to determine the relationship between volumetric sensor output and actual grain weight, and (2) dynamic volumetric measurement performed online during harvesting using the calibrated parameters. This segmentation allows each sub-task to be optimized independently, achieving both easy calibration and high measurement precision.
2Measurement precision
If a volumetric type sensor is used, then measurement precision is high, but installation complexity increases and susceptibility to moisture content and grain variety remains
Solution Approach 1:
The system performs preliminary calibration actions offline before actual harvesting operations. The volumetric sensor is calibrated against known weight standards in a controlled environment, establishing calibration parameters that compensate for variations in grain moisture content and variety. This preliminary calibration reduces the sensor's susceptibility to these factors during dynamic harvesting operations.
3Device complexity
If impulse or photoelectric sensors are used, then design is simple and installation is easy, but field calibration is difficult and measurement precision is low
Solution Approach 1:
The system introduces a weight calibration standard as an intermediary reference. During offline calibration, the volumetric sensor measurements are compared against known weight standards, and calibration parameters are adjusted accordingly. This intermediary reference enables accurate field calibration without requiring complex calibration equipment during harvesting 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
This solution achieves high-precision, real-time grain yield detection by overcoming vibration and moisture-related issues, ensuring accurate measurements despite harvester vibrations and varying grain types.
Implementation Method 1
the left volumetric granary is provided on its bottom with weighing sensor A, and in its side with an unload port switching door A, the right volumetric granary is provided on its bottom with weighing sensor B
Implementation Method 2
the unload port switching door A and the unload port switching door B are opened or closed though power-on or power-off of an electromagnets under the control of the control circuit module
Data Source
AI summary
The disclosure discloses an apparatus for online volumetrically detecting grain yield based on weight calibration comprising left volumetric granary, right volumetric granary and push board. The left volumetric granary is provided on its bottom with first weighing sensor, and in its side with unload grain port opening and first closing door, the right volumetric granary is provided on its bottom with second weighing sensor, and in its side with unload grain port opening and second closing door, the left volumetric granary and the right volumetric granary are provided on their tops with the push board, the push board is a hollow box structure with a top side and a bottom side both opened, and is slidably mounted to a top of the left volumetric granary and the right volumetric granary through a slide driving mechanism.