Fish Eye Luminance Measurement for Preservation State

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Solution Overview

Problem

Existing methods for evaluating the preservation state of fresh fish are inadequate, as they rely on bioelectricity, which is not generated by dead fish, making it impossible to assess the preservation environment effectively.

Innovation Solution

A method that uses ultraviolet rays to irradiate the eyes of fish and measure luminance differences between the left and right eyes to determine the preservation environment, outputting information on the fish's preservation state without relying on bioelectricity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If bioelectricity measurement method is used to evaluate preservation state, then measurement principle is simple, but it cannot measure dead fish since they do not generate bioelectricity

Engineering Contradiction:

Improvemeasurement principle simplicityVSAvoidapplicability to dead fish

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent replaces the bioelectricity measurement method (which relies on biological electrical signals) with an optical measurement method using ultraviolet irradiation and luminance detection. This substitution allows the system to measure preservation state in dead fish without requiring biological electrical activity, thus resolving the contradiction between measurement simplicity and applicability to dead fish.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the measurement parameter from bioelectricity (electrical property) to luminance (optical property). By measuring the luminance of the fish eye in response to ultraviolet irradiation, the system can detect preservation state changes in dead fish, overcoming the limitation of bioelectricity-based methods that cannot detect signals from deceased organisms.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If traditional preservation methods are used, then fish can be preserved, but temperature imbalance and contact surface differences cause uneven preservation quality

Engineering Contradiction:

Improvepreservation capabilityVSAvoidpreservation uniformity

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent introduces a feedback mechanism by measuring the luminance of the fish eye and using this information to evaluate the preservation state. The system can detect temperature imbalance and contact surface differences by monitoring changes in luminance, providing feedback that enables real-time assessment and adjustment of preservation conditions to ensure uniform quality.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces direct physical measurement of temperature and contact surfaces with an optical measurement system. By using ultraviolet irradiation and luminance detection, the system can non-invasively assess preservation uniformity without physically measuring temperature distribution or contact surface conditions, thus improving measurement capability while maintaining preservation reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 quick and non-invasive determination of the preservation environment of fish, ensuring proper evaluation of freshness and temperature consistency, thereby improving preservation quality.

Implementation Method 1

irradiated with first ultraviolet rays... obtaining first information indicating luminance of an iris portion of a left eye of the fish

Methodology Applied

Scientific EffectUltraviolet radiation reflection: Reflection

Implementation Method 2

measuring luminance of an iris portion... using ultraviolet rays to irradiate the eyes of fish

Methodology Applied

Scientific EffectPhotoelectric effect: Photoelectric Effect

Data Source

PatentUS9488631B2Preservation environment information output method, preservation environment information output device, and recording medium

Publication Date: 2016.11.08 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

A method of determining preservation environment information includes irradiating left and right eyes of a fish with ultraviolet rays, taking ultraviolet images of the fish eyes by one or more ultraviolet cameras, analyzing the ultraviolet images by a computer, determining preservation environment of the fish based on luminance of each of iris portions in the left and right fish eyes, and outputting information representing a determination result to a display.