Determination device, refrigeration apparatus for containers, container, determination system, determination method, and program
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Solution Overview
Problem
Existing container refrigeration systems struggle to accurately determine the degree of impact on target components due to differences in the positions of the acceleration sensor and the target components, leading to errors in impact estimation.
Innovation Solution
A determination device that includes a storage to store data on the influence due to the position difference between the sensor and target components, and a processor to estimate the impact on these components using correction coefficients, allowing for precise determination of unusual states based on detected values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single acceleration sensor is used to detect impact, then device complexity is reduced, but measurement precision deteriorates due to position differences between sensor and target components
Solution Approach 1:
The patent introduces correction coefficients as an intermediary element between the sensor detection and target component impact assessment. These coefficients, stored in advance based on position relationships, mediate the conversion from sensor readings to accurate target component impact values, resolving the precision issue without adding physical sensors
Solution Approach 2:
The patent performs preliminary calculation and storage of correction coefficients based on the positional relationships between sensors and target components before actual impact detection. This preliminary action enables accurate impact assessment during operation without requiring complex real-time calculations or multiple sensors
2Measurement precision
If multiple sensors are deployed to improve impact detection accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent creates a virtual model of impact on target components by mathematically transforming sensor data using correction coefficients. Instead of physically copying sensors to each target component location, the system replicates the impact information through calculation, achieving accurate multi-point assessment with a single sensor
Solution Approach 2:
The patent transforms the detection parameter from direct physical measurement at multiple points to indirect calculation using position-based correction coefficients. This parameter transformation allows accurate impact assessment of multiple components while maintaining simple sensor deployment
3Measurement precision
If correction coefficients are pre-stored for all target components, then measurement precision improves, but storage requirements increase
Solution Approach 1:
The patent applies different correction coefficients specifically tailored to each target component's local positional characteristics relative to the sensor. This localized approach ensures high precision for each component while storing only the necessary minimal data set required for accurate correction, avoiding redundant information
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 estimation of impact on multiple target components with reduced sensor usage, promptly identifying unusual states and fatigue failures, and providing historical data for informed maintenance decisions.
Implementation Method 1
a sensor that detects a physical quantity to determine whether a strong impact has been applied on the container; using an impact sensor as a detection unit that is provided in the container refrigeration apparatus and is configured to detect the acceleration
Data Source
AI summary
A determination device includes: a storage configured to store data on an influence on a detected value of a degree of impact detected by a sensor disposed in a container including a target component, where the influence is due to a difference between a position of the sensor and a position of the target component; and a processor configured to determine a degree of impact on the target component as an estimated value based on the detected value detected by the sensor and the data stored in the storage.