Rectifier Bridge Identification System for Safe Charging
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Solution Overview
Problem
Existing power supply systems for portable electronic devices, particularly in clinical environments, face challenges with exposed charging contacts that pose safety risks and require additional contacts for proper docking detection, increasing complexity and cost.
Innovation Solution
An electronic device identification system using a rectifier bridge with a passive or active identification component, coupled with semiconductor switching devices, detects the presence of a portable device and ensures efficient power transfer without exposing users to shock hazards, utilizing infrared data intercommunication for safe and efficient charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If exposed electrical contacts are used for charging, then charging speed and accessibility for cleaning are improved, but safety risks and regulatory compliance difficulty increase
Solution Approach 1:
The patent introduces an intermediary identification component and detection circuit between the power source and the battery charging system. The detection circuit senses the identification component's characteristic when the portable device is docked, and only then enables the power transfer. This intermediary mechanism allows the system to maintain exposed contacts for fast charging while adding a safety layer that prevents unauthorized or improper charging connections.
2Reliability
If a second set of contacts is added for docking detection, then proper device docking confirmation is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent makes the existing electrical contacts serve multiple functions: they simultaneously serve as both power transfer contacts and identification/detection contacts. The identification component is coupled to the same contacts that transfer power, eliminating the need for separate detection contacts. This multi-functional approach maintains reliable docking detection while reducing the total number of contacts required.
Solution Approach 2:
The patent combines the power transfer function and the identification/detection function into a single set of electrical contacts. By coupling the identification component to the existing power contacts and using the same physical interface for both purposes, the system merges two previously separate functions into one unified interface, reducing complexity.
3Reliability
If identification component is continuously connected to power contacts, then docking detection is maintained, but electrical shock hazard increases
Solution Approach 1:
The patent implements a dynamic control system where the power transfer state changes based on the detection result. The system transitions from a static always-connected state to a dynamic state where power is enabled only when the identification component is properly detected. The switch or transistor controlled by the detection circuit dynamically connects or disconnects the power transfer path, ensuring safety while maintaining detection capability.
Data Source
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AI summary
An electronic device identification system includes a rectifier bridge for providing an output DC voltage of fixed polarity from an input DC voltage of a corresponding or reverse polarity. The system further includes an identification component coupled across an input to the rectifier bridge. This enables identification of the identification component value via electrical detection circuitry applied to the input to the rectifier bridge.