Power-Button Reset Circuit for Portable Device Boot Recovery
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Solution Overview
Problem
Portable electronic devices are difficult to disassemble for maintenance, leading to increased costs and time when issues like system crashes or boot failures occur, as frontline personnel and users often need to send devices for repair rather than performing simple resets.
Innovation Solution
A portable electronic device design incorporating a power-off trigger circuit, system power-off circuit, and configuration power-off circuit allows for complete system reset without opening the casing by disconnecting power through continuous button presses, enabling controller and configuration resets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the device is designed to be difficult to disassemble for portability, then portability is improved, but ease of repair deteriorates
Solution Approach 1:
The system enables self-service reset functionality through software control. The power management module can autonomously reset the system by controlling power supply to the main board and embedded controller without requiring physical disassembly, allowing frontline personnel to perform maintenance tasks independently.
Solution Approach 2:
The power management module acts as an intermediary between the user interface and the system components. It receives reset commands and translates them into controlled power cycling sequences, mediating the reset process without requiring direct physical access to internal components.
2Ease of operation
If the device requires disassembly for system reset, then system reset capability is improved, but maintenance time increases
Solution Approach 1:
The patent replaces the mechanical disassembly process with an electronic/software-based reset mechanism. The power management module controls power supply circuits to achieve system reset through electrical signals, substituting the mechanical action of opening the casing with an electronic power cycling process that takes only a few seconds.
3Ease of operation
If the device requires disassembly for controller reset, then controller reset capability is improved, but maintenance costs increase
Solution Approach 1:
The system enables self-service reset functionality through software control. The power management module can autonomously reset the system by controlling power supply to the main board and embedded controller without requiring physical disassembly, allowing frontline personnel to perform maintenance tasks independently.
Data Source
AI summary
A portable electronic device includes a main system circuit, a storage, a power button, a power-off trigger circuit, a system power-off circuit, a power supply circuit, and a configuration power-off circuit. The power-off trigger circuit is coupled to the power button and provides a system power-off signal and a configuration power-off signal when the power button is detected to be continuously pressed and a pressing time is greater than a predetermined time. The system power-off circuit is coupled to the power-off trigger circuit and the power supply circuit and stops providing the main system circuit with a system power supply voltage provided by the power supply voltage according to the system power-off signal. The configuration power-off circuit is coupled to the power-off trigger circuit and the storage and drives the configuration power supply voltage provided to the storage down to a ground voltage according to the configuration power-off signal.