Power Supply System Threshold Voltage Switching
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Solution Overview
Problem
Electronic apparatuses without valid battery voltage may abnormally end when external power supply is disconnected, as existing techniques fail to prevent instantaneous power disconnection and timely switching to battery power sources.
Innovation Solution
A power supplying system with an electronic apparatus and a connection apparatus, featuring first and second power feed units, voltage determination units, and a management unit that prioritizes external power over internal battery power, switching between power sources based on threshold voltage comparisons to ensure continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the apparatus uses external power supply without a valid battery voltage, then power consumption efficiency is improved, but the system becomes vulnerable to abnormal endings when external power is disconnected
Solution Approach 1:
The voltage determination unit continuously monitors the voltage of the first power feed unit before disconnection occurs. When the voltage drops below the first threshold value, the system proactively switches to the second power feed unit, preventing abnormal endings before they can occur.
Solution Approach 2:
The system implements continuous voltage monitoring with feedback control. The voltage determination unit provides real-time voltage information to the selection unit, which adjusts power source selection based on the monitored voltage levels, ensuring reliable operation while efficiently using external power when available.
2Reliability
If the system switches power sources quickly upon detecting external power disconnection, then reliability is improved, but response time delay occurs in detecting and switching power supply
Solution Approach 1:
The system performs preliminary voltage monitoring and comparison against threshold values before actual disconnection occurs. This advance detection and preparation enables instantaneous switching when voltage drops, eliminating response time delays while maintaining continuous operation.
3Use of energy by moving object
If the apparatus prioritizes external power over internal battery power, then energy efficiency is improved, but the apparatus risks abnormal endings when external power is disconnected and no valid battery voltage exists
Solution Approach 1:
The selection unit continuously receives voltage information from the voltage determination unit and dynamically adjusts power source selection. When external power is available and stable, the system efficiently uses it; when voltage drops below thresholds indicating disconnection, the system immediately switches to alternative power sources, maintaining both energy efficiency and operational continuity.
Solution Approach 2:
The system changes operational parameters (power source selection) based on voltage threshold comparisons. By monitoring voltage as a key parameter and switching power sources when thresholds are exceeded, the system optimizes energy efficiency during external power operation while ensuring reliability during transitions.
Data Source
AI summary
In a power supplying system, a selection unit that selects one of a first power feed unit and a second power feed unit, a first voltage determination unit that compares a voltage of an output of the first power feed unit with a first threshold value, a second voltage determination unit that compares a voltage of an output of the second power feed unit with a second threshold value, and a management unit that sets the first threshold value and the second threshold value are provided.