Auxiliary Power Supply Isolation for Forced Device Restart
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Solution Overview
Problem
Existing electronic devices lack the capability for a forced restart when the processor fails, as the reset circuit cannot be powered independently of the main power supply, preventing a controlled reboot.
Innovation Solution
An apparatus and method that isolate the main power supply and provide power to a reset circuit using an auxiliary power supply, allowing the reset circuit to generate a reset signal for restarting the electronic device, even when the main power supply is compromised.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the processor and reset circuit are powered by the main power supply or external power supply, then the device can operate normally, but forced restart capability is lost when the processor fails
Solution Approach 1:
The power supply system is segmented into a main power supply for normal operation and a separate auxiliary power supply for the reset circuit. This segmentation allows the reset circuit to be independently powered, enabling forced restart capability when the processor fails while maintaining overall system simplicity through clear functional separation.
Solution Approach 2:
An isolation circuit is introduced as an intermediary component between the main power supply and the auxiliary power supply. This isolation circuit controls the power flow to the reset circuit, allowing the system to switch between normal operation mode and forced restart mode without direct interference between the two power supplies, thus resolving the contradiction between reliability and complexity.
2Reliability
If the reset circuit is always powered by the main power supply, then the power supply structure is simple, but the reset circuit cannot operate independently when the main power supply fails
Solution Approach 1:
The power supply is divided into two independent segments: the main power supply for general device operation and the auxiliary power supply dedicated to the reset circuit. This segmentation ensures that the reset circuit can operate independently when needed, achieving reliable forced restart capability while keeping the overall configuration manageable through clear functional separation.
Solution Approach 2:
The auxiliary power supply is specifically designed to provide power only to the reset circuit under specific conditions (when processor failure is detected). This local quality approach ensures that the reset circuit has independent power capability when required, while the rest of the system continues to use the main power supply, balancing reliability and complexity.
3Reliability
If an auxiliary power supply and isolation circuit are added to enable forced restart, then forced restart capability is achieved, but the device complexity increases
Solution Approach 1:
The isolation circuit serves as a smart intermediary that automatically manages power distribution between the main and auxiliary power supplies. It monitors system status and activates the auxiliary power supply only when processor failure is detected, enabling forced restart capability while minimizing the impact on device complexity through automated control rather than manual intervention.
Solution Approach 2:
The system implements self-service through the isolation circuit that automatically detects processor failures and switches power sources without external intervention. The reset circuit can autonomously generate reset signals when powered by the auxiliary power supply, enabling the device to self-recover from failures while keeping the power supply structure relatively simple through automated decision-making.
Data Source
AI summary
This document discusses, among other things, apparatus and methods for restarting an electronic device configured to receive power from a main power supply and an auxiliary power supply. The electronic device includes a reset circuit a reset circuit configured to provide a first signal indicative of an electronic device failure, and an isolation circuit configured to isolate the main power supply from the auxiliary power supply in response to the first signal so that power is supplied to the reset circuit by the auxiliary power supply. The reset circuit can be configured to generate a reset signal for restarting the electronic device with the power supplied by the auxiliary power supply.