Fruit Growth Monitoring via Vibration Frequency Analysis
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Solution Overview
Problem
Existing methods for monitoring fruit growth status, such as image-based systems and impact-based vibration analysis, face challenges like high data transmission requirements and potential fruit damage, and lack effective detection of the enlargement step in fruit growth.
Innovation Solution
A fruit growth monitoring system comprising a vibration exciter that imparts vibrations to a stem or branch, a vibration sensor to detect these vibrations, and a detector that uses frequency changes to monitor weight changes in the fruit, allowing for non-invasive, repeated assessments and efficient data transmission without high-speed lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image-based methods are used to monitor fruit growth, then growth status can be determined, but data transmission volume becomes excessively large
Solution Approach 1:
The patent extracts only the essential information (vibration frequency) from the fruit growth monitoring process, discarding the need for complete image data transmission. By attaching vibration sensors directly to the fruit, the system captures only the relevant growth indicators (weight changes reflected in vibration characteristics) rather than transmitting entire images, thus resolving the contradiction between measurement capability and data volume.
Solution Approach 2:
The patent replaces the optical/image-based measurement system with a mechanical vibration-based system. Instead of using cameras and image processing to determine fruit growth status, the system uses vibration sensors to detect mechanical oscillations of the fruit, which correlate with weight changes. This substitution dramatically reduces data transmission requirements while maintaining monitoring accuracy.
2Measurement precision
If impact-based vibration analysis is applied to determine fruit maturity, then growth status can be assessed, but the fruit may be damaged by repeated impacts
Solution Approach 1:
The patent employs continuous mechanical vibration excitation at low amplitudes rather than repeated impact forces. By using a vibration motor to generate sustained oscillations and analyzing the fruit's resonant frequency characteristics, the system can assess maturity and weight changes without delivering damaging impacts. The vibration parameters are controlled to remain within safe thresholds that prevent fruit damage while still providing measurable data.
Solution Approach 2:
The system continuously monitors vibration responses and adjusts excitation parameters to maintain optimal measurement conditions without exceeding damage thresholds. By analyzing the relationship between excitation frequency, amplitude, and the fruit's resonant response, the system can determine maturity status while preventing harmful vibrations through real-time parameter adjustment based on the fruit's condition.
3Measurement precision
If image data is transmitted for analysis, then accurate growth status can be determined, but high-speed transmission lines are required
Solution Approach 1:
The patent replaces complex optical measurement and image transmission infrastructure with simple mechanical vibration sensing. The vibration sensors and processors can be deployed directly at the field site without requiring high-speed internet or cloud connectivity, enabling accurate growth monitoring in remote locations with minimal infrastructure.
Solution Approach 2:
The system performs all necessary analysis locally using the vibration data collected on-site, eliminating the need for external cloud processing or high-speed transmission networks. The onboard processor analyzes vibration frequency and amplitude characteristics to determine growth status independently, making the system self-sufficient and suitable for remote deployment.
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 continuous monitoring of fruit growth status during the enlargement step without damaging the fruit and reduces data transmission volume, allowing for accurate weight change detection and determination of the shift from the enlargement to the maturation step.
Implementation Method 1
a vibration exciter that imparts predetermined vibration to a stem or a branch between a fruit and a stalk growing on a plant
Implementation Method 2
a vibration sensor that detects vibration of the stem or the branch caused by the vibration imparted from the vibration exciter
Implementation Method 3
a detector that detects a weight or weight change of the fruit based on a frequency of the vibration detected by the vibration sensor
Data Source
AI summary
A system for monitoring fruit growth including: a vibration exciter that imparts predetermined vibration to a stem or a branch between a fruit and a stalk growing on a plant; a vibration sensor that detects vibration of the stem or the branch caused by the vibration imparted by the vibration exciter; and a detector that detects a weight or weight change of the fruit based on a frequency of the vibration detected by the vibration sensor.