USB Type-C Connection Detection Circuit for Water-Induced Corrosion
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Solution Overview
Problem
Corrosion of USB Type-C connector terminals occurs due to periodic pulse output for connection detection when water is attached, which existing methods cannot adequately prevent while conforming to the USB Type-C standard.
Innovation Solution
An information processing device with a voltage detection unit and signal control unit that monitors and stops the connection detection signal if the voltage value exceeds certain thresholds, indicating water presence, thereby preventing corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If periodic pulse output is used for connection detection in USB Type-C connector, then connection detection function is improved, but terminal corrosion occurs when water is attached
Solution Approach 1:
The patent applies preliminary action by detecting water attachment before the periodic pulse output can cause corrosion. The voltage detection unit monitors the voltage value at predetermined timing, and the signal control unit stops signal output when water attachment is detected through voltage threshold comparison, preventing corrosion before it occurs
Solution Approach 2:
The patent implements feedback by continuously monitoring the voltage value of the signal output to the connector and using this feedback to control the signal output. The voltage detection unit provides real-time feedback on the voltage state, enabling the signal control unit to adjust or stop signal output based on the detected voltage changes indicating water attachment
2Object-affected harmful factors
If signal output is stopped to prevent corrosion, then terminal corrosion is suppressed, but connection detection capability is lost
Solution Approach 1:
The patent applies dynamics by making the signal output controllable and adjustable rather than fixed. The signal control unit dynamically adjusts the signal output based on real-time voltage detection, stopping signal output when water attachment is detected while maintaining normal connection detection capability when the connector is dry
Solution Approach 2:
The patent changes the parameter of signal output control based on detected conditions. The signal control unit modifies the output state (on/off) of the connection detection signal according to the voltage value detected by the voltage detection unit, allowing the system to adapt between corrosion prevention mode and normal detection mode
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
Effectively suppresses connector terminal corrosion by detecting water attachment and ceasing signal output, ensuring compliance with USB Type-C standards and maintaining device functionality.
Implementation Method 1
a voltage detection unit configured to monitor a voltage value of a signal output to a predetermined terminal of a connector at a predetermined timing
Implementation Method 2
corrosion of the terminal proceeds due to the electrolysis of the water
Data Source
AI summary
There is provided an information processing device including a voltage detection unit configured to monitor a voltage value of a signal output at a predetermined timing, and a signal control unit configured to stop output of the signal if the voltage value after a predetermined time elapses from when the voltage value detected by the voltage detection unit exceeds a first value does not exceed a second value greater than the first value.