Electronics Module Key-Lock Coding System for Fail-Safe Automation
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Solution Overview
Problem
The mechanical coding principle used in existing automation systems is insufficient for ensuring fail-safe operation, particularly in critical industries like the petrochemical sector, as it lacks the ability to verify the authenticity and correct configuration of electronic modules before allowing them to be plugged into carrier units.
Innovation Solution
A key-lock coding system is implemented with a first coding part latched on the electronic module and a second detachable coding part that includes a memory chip, allowing for secure electrical connections and data storage to ensure only authorized modules can be plugged into the carrier unit, with the option for multiple coding configurations and a coaxial connector design to prevent accidental detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical coding principle is used in existing automation systems, then the system allows for module replacement and modular structure, but it lacks the ability to verify authenticity and correct configuration, making it insufficient for fail-safe operation
Solution Approach 1:
The patent combines mechanical coding elements with electronic memory components into a unified coding system. The first coding part provides mechanical key-lock coding while the second coding part contains a memory chip with unique address data, creating a hybrid system that leverages both mechanical reliability and electronic verification capabilities to achieve fail-safe operation.
Solution Approach 2:
The patent introduces a memory chip as an intermediary element within the second coding part that stores and provides unique address data for verification. This intermediary component enables authentication and configuration verification between the electronic module and carrier unit, bridging the gap between simple mechanical coding and complex electronic verification systems.
2Reliability
If the second coding part is permanently fixed in the electronic module, then coding verification is ensured, but the coding part cannot be replaced or transferred to another module
Solution Approach 1:
The patent divides the coding system into two separable parts: the first coding part that remains permanently fixed in the electronic module housing, and the second coding part that can be detached and transferred. This segmentation allows the permanent portion to ensure verification reliability while the detachable portion enables module interchangeability and adaptability.
Solution Approach 2:
The second coding part is designed to nest within or attach to the first coding part, allowing the detachable second part to be securely held during operation for verification purposes, yet easily removed when module replacement is needed. The nested structure provides both stability during use and flexibility for interchange.
3Device complexity
If a simple mechanical coding system is used, then the device complexity is low, but it cannot prevent accidental misplacement or ensure correct module configuration in fail-safe systems
Solution Approach 1:
The patent implements a feedback mechanism where the memory chip in the second coding part stores unique address data that can be read and verified by the carrier unit or electronic module. This feedback loop provides active verification of correct module placement and configuration, preventing accidental misplacement by detecting and signaling mismatches between the coding elements and expected configurations.
Data Source
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AI summary
The module has a coding part and another coding part (12) designed according to lock-and-key principle. The former coding part is arranged in a rear side, and the latter coding part is connected with the former coding part in a detachable manner. A plug connector (21) is arranged on the latter coding part such that a mating plug connector arranged in an inner side of the module is inserted into the plug connector to establish an electrical connection. A memory chip (13) is arranged at the latter coding part and connected with the plug connector.