Connector Lock Indicator Contrast for Reliable CPA Detection
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Solution Overview
Problem
Existing connector position assurance (CPA) systems fail to reliably detect the secure locking of connector housings due to low contrast between the indicator and contrasting elements, making it difficult to discern the locking state, especially under vibrations or mechanical stress.
Innovation Solution
A securing device with an indicator element and a contrasting element, where the contrasting surface is moved to create sufficient contrast only in the locked position, allowing the indicator feature to be discernible, enabling reliable detection of the locking state through a scannable element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the indicator element uses a transparent surface with an identifying feature, then it can be integrated into the CPA system, but the contrast is too low to reliably detect the locking state
Solution Approach 1:
A contrasting element with a contrasting surface is introduced as an intermediary between the indicator element and the reader. This contrasting surface enhances the optical contrast of the identifying feature when the locking element is in the locked position, enabling reliable detection by the reader while maintaining integration with the transparent CPA system.
Solution Approach 2:
The contrasting element utilizes color or optical property changes to create sufficient contrast between the identifying feature and its background. When the locking element transitions to the locked position, the contrasting surface modifies the optical appearance of the identifying feature, making it detectable by the reader.
2Measurement precision
If the contrasting surface is always visible, then detection is always possible, but it prevents the system from indicating different locking states through presence/absence of contrast
Solution Approach 1:
The contrasting element is made dynamic by coupling it to the locking element. The contrasting surface moves or changes its position relative to the identifying feature based on the locking state. When locked, the contrasting surface provides high contrast for detection; when unlocked, the contrast is reduced or eliminated, encoding the locking state information.
Solution Approach 2:
The contrasting element is pre-positioned such that it automatically aligns with the identifying feature when the locking element is in the locked position. This preliminary positioning ensures that the contrast enhancement occurs automatically upon locking, without requiring additional actions or components.
3Extent of automation
If a scannable element is added to detect locking state, then automated detection is enabled, but the system complexity increases
Solution Approach 1:
The contrasting element serves multiple functions: it enhances the optical contrast of the identifying feature, indicates the locking state through contrast variation, and works with the existing transparent CPA system structure. This multi-functionality enables automated detection without requiring separate complex indication mechanisms.
Solution Approach 2:
The contrasting element is integrated into the existing CPA system components, utilizing the movement and structure of the locking element itself to control the visibility of the contrasting surface. The system uses its own operational movements to automatically control the detection signal, eliminating the need for separate actuation mechanisms.
Data Source
AI summary
A securing device for securing a lock of a locking element. The securing device includes a locking element, which can be moved from a first locking position into a second locking position. The locking element produces locking in the second locking position. The securing device further includes an indicator element having an identifying feature for indicating an item of information; and a contrasting element having a contrasting surface which forms a contrast in relation to the identifying feature, such that the identifying feature is discernible when the identifying device is placed above the contrasting surface and is not discernible when the identifying device is not placed above the contrasting surface. In the first locking position, the identifying feature is not placed above the contrasting surface and is not discernible. In the second locking position, the identifying feature is placed above the contrasting surface and is discernible.