Smart Charging System Moisture Detection and Power Control
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Solution Overview
Problem
Electronic devices are often rendered inoperable due to moisture intrusion, and existing charging systems lack a moisture detection mechanism, leading to potential damage when power is applied, as users unknowingly connect wet devices to charging sources.
Innovation Solution
A smart charging system that includes a moisture detector and vacuum-scavenging mechanism to prevent power from being applied to a device until it is determined to be dry, using a switch to isolate the power source when moisture levels exceed a threshold, ensuring safe charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power is applied to an electronic device without moisture detection, then the device can be charged and operated, but the internal electronics may be damaged by moisture-induced short circuits
Solution Approach 1:
The moisture detector is activated before power is applied to the electronic device. The detector samples air from within the device enclosure and determines moisture content in advance, allowing the system to prevent power application if moisture exceeds the threshold, thereby avoiding short circuit damage to the electronics
Solution Approach 2:
The moisture detector acts as an intermediary between the power source and the electronic device. It samples and analyzes the internal environment of the device, and based on its findings, controls the switch that connects or disconnects power, preventing harmful moisture-induced current flow
2Reliability
If a moisture detector and vacuum-scavenging mechanism are added to the charging system, then damage to wet devices is prevented, but the device complexity increases
Solution Approach 1:
The charging system is designed to perform multiple functions: it can detect moisture levels, operate as a vacuum pump to remove moisture, and control power delivery. By integrating these functions into a single multi-functional device, the overall system complexity is reduced compared to having separate independent systems for each function
Solution Approach 2:
The moisture detector, vacuum pump, and power control switch are combined into an integrated charging system. The detector and pump can be housed together in a single enclosure, and their control circuits are merged, reducing the number of separate components and simplifying the overall system architecture
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
Prevents damage to electronic devices by ensuring power is only applied when the device is sufficiently dry, protecting internal components from short circuits and damage caused by moisture.
Implementation Method 1
a pump configured and adapted to move gas from the pneumatic connector to the moisture detector
Data Source
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AI summary
Methods and apparatuses for detecting when an electronic device has been exposed to moisture that could damage the electronic device, and inhibiting the flow of electrical power to the electronic device when the moisture level is too high are disclosed. Embodiments sample air within the electronic device, measure the moisture in the sampled air, inhibit the connection of electrical power to the electronic device if the moisture exceeds a threshold, and permit the connection of electrical power to the electronic device if the moisture level is below a threshold. Some embodiments measure the moisture in the ambient air to improve effectiveness. Other embodiments allow resetting of a tripped condition. Other embodiments include constant sampling of air from within the electronic device to assist drying, and inhibiting application of power to the electronic device until the electronic device is sufficiently dry. Still other embodiments interrupt power from the electronic device's battery.