Production Condition Hash Chaining Across Electronic Component Processes
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Solution Overview
Problem
Managing the production of electronic device components across multiple processes is challenging due to the vast amount of information required, leading to high network load and processing burdens when determining if components are produced under appropriate conditions.
Innovation Solution
A production management system that uses a network of management devices and production devices to store and calculate hash values from production condition information, allowing for the verification and storage of production conditions across processes, ensuring components are produced correctly by comparing calculated hash values with stored management hash values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If information on all electronic device components is managed for each process, then production condition verification is achieved, but the amount of information becomes enormous and network load increases
Solution Approach 1:
The patent extracts only the essential verification information (hash values) from the complete production condition data. Each management device calculates a hash value from its local production condition information and transmits only this condensed representation to the next process, rather than transmitting all raw production condition data. This extraction principle reduces information quantity while preserving verification capability.
Solution Approach 2:
The patent transforms production condition information into a different parameter form (hash value) that maintains verification functionality while occupying minimal space. By converting detailed production condition data into cryptographic hash representations, the system changes the parameter from large-volume raw data to compact verification tokens, resolving the contradiction between verification reliability and information quantity.
2Loss of information
If all production condition information is transmitted between processes, then complete traceability is achieved, but processing load and network bandwidth consumption increase
Solution Approach 1:
The patent creates cryptographic copies (hash values) of production condition information that serve as verified representations without requiring transmission of the original large datasets. Each process receives a hash copy from the previous process, verifies it against its own calculations, and forwards the verified hash to the next process. This copying mechanism maintains complete traceability while minimizing network and processing loads.
3Manufacturing precision
If hash values are calculated and transmitted for every component, then production accuracy is verified, but processing time increases
Solution Approach 1:
The patent performs hash value calculations as preliminary actions during the production process itself, rather than as post-processing verification steps. Each management device calculates the hash value from its production condition information and transmits it immediately to the next process, integrating verification into the production flow. This preliminary action approach ensures production accuracy verification without adding separate processing time overhead.
Data Source
AI summary
In production management systems, management devices includes a management device of a pre-process which adds a hash value of a production condition information received from a preceding process and a hash value calculated from the production condition information of the pre-process to calculate a first hash value and transmit the production condition information of the pre-process and the first hash value to a management device of a current process, and the management devices includes a management device of a current process which calculates a second hash value from production condition information received, calculates a third hash value obtained by subtracting the second hash value from the first hash value.