Mobile Device Overvoltage Detection and Faulty Charger Reporting
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Solution Overview
Problem
Mobile devices can be damaged by improperly functioning USB chargers that provide overvoltage, necessitating a method to detect and report faulty charging devices to prevent damage and ensure user safety.
Innovation Solution
A system and method within mobile devices to determine if a charging device is faulty by checking for overvoltage, using high voltage tolerant circuitry to dissipate excess voltage, and reporting the location of the faulty device via GPS or network towers, with visual and audible alerts for user notification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If USB chargers are used to charge mobile devices, then charging convenience is improved, but device damage risk increases due to overvoltage from faulty chargers
Solution Approach 1:
The mobile device performs preliminary detection of the charging device's voltage output before enabling charging. The processor detects whether the charging device outputs overvoltage (greater than 5.5 volts) and prevents charging operation if overvoltage is detected, thereby avoiding device damage before it occurs.
Solution Approach 2:
The system continuously monitors the voltage output from the charging device during the charging process. When overvoltage is detected, the processor provides feedback by disabling the charging operation and notifying the user through visual and audible indicators, creating a closed-loop protection mechanism.
2Reliability
If overvoltage detection and reporting functionality is added to mobile devices, then device protection is improved, but device complexity increases
Solution Approach 1:
The mobile device performs self-detection and self-protection by using its existing processor and circuitry to detect overvoltage conditions. The device autonomously determines when a charging device is faulty and automatically disables charging without requiring external monitoring equipment or complex additional hardware.
Solution Approach 2:
The mobile device's existing processor and notification systems are used for multiple purposes - both normal device operation and overvoltage detection/reporting. The visual and audible indicators originally designed for user interface purposes are repurposed to alert users about faulty charging devices, eliminating the need for separate dedicated alerting hardware.
3Loss of information
If location reporting of faulty chargers is implemented, then charger tracking is improved, but information processing requirements increase
Solution Approach 1:
The mobile device obtains location information in advance using its existing GPS or network-based location services before the overvoltage detection event occurs. This pre-positioning of location data eliminates the need for complex real-time location tracking at the moment of fault detection, as the location information is already available in the device's memory.
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 identifies and reports faulty charging devices, preventing damage to mobile devices and enabling timely replacement, thereby ensuring user safety and device integrity.
Implementation Method 1
The high voltage tolerant circuitry may be coupled to the charging device port and the battery and may be configured to dissipate the overvoltage
Implementation Method 2
The second circuitry may include global positioning system (GPS) circuitry for determining the location of the mobile device
Data Source
AI summary
Reporting a faulty charging device. A mobile device may determine if a charging device is a faulty charging device. The determination may be performed after coupling the charging device to a power source and to the mobile device. If the charging device is a faulty charging device, the mobile device may report a location of the faulty charging device over a network.