Power Cycle Reset via Charging Power Detection in Sealed Electronics
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wearable devices with rechargeable batteries often enter error states requiring power cycling, but external battery removal or accessible reset buttons are not feasible due to water-resistant designs and lack of external ports.
Innovation Solution
A power cycle reset system that uses a control circuit to detect changes in charging power, applying a control signal to temporarily discharge the device's electronics when disconnected from a charger, allowing for automatic power-up reset upon reconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the device uses a sealed water-resistant design without external battery removal capability, then water resistance is improved, but the ability to perform power cycle reset is worsened
Solution Approach 1:
The device performs power cycle reset automatically through software control when specific conditions are detected, eliminating the need for manual battery removal or physical button pressing. The system monitors its own state and self-corrects by initiating a power cycle sequence, allowing the device to maintain water resistance while providing reset functionality.
Solution Approach 2:
The patent replaces mechanical reset methods (battery removal, physical reset buttons) with an electronic/software-based solution. The control circuit detects charging state changes and triggers a software-controlled power cycle sequence, substituting mechanical operations with electronic control to maintain the sealed design.
2Object-affected harmful factors
If the device lacks accessible reset buttons or external ports, then water resistance is improved, but ease of repair and maintenance is worsened
Solution Approach 1:
The device automatically detects fault states and performs power cycle reset without user intervention or external tools. The control circuit monitors charging power changes and autonomously initiates the power cycle sequence, enabling the device to self-correct faults while maintaining its sealed water-resistant design.
Solution Approach 2:
The control circuit continuously monitors the charging state of the energy storage device and uses this feedback to determine when to initiate a power cycle reset. When charging power is removed and the device is in a fault state, the feedback mechanism triggers the reset sequence, enabling automatic fault correction without external access.
3Reliability
If the device automatically performs power cycle reset upon charging disconnection, then reliability is improved, but device complexity is worsened
Solution Approach 1:
The control circuit is pre-programmed with logic to detect charging disconnection and automatically initiate power cycle reset when fault conditions are present. This preliminary programming allows the device to reliably return to a known good state without adding complex user interfaces or external controls.
Data Source
AI summary
An electronic device is configured to perform a power cycle reset in response to a change in charging power applied to the device. The device includes an electrical load with a microprocessor, a battery, a charging circuit that receives power from an external power source and uses the received power to charge the battery, and a control circuit that regulates the power cycle reset operation. The power supply circuit selectively uses the battery to power the device by coupling the load to a power supply path and discharges the load by coupling the load to a discharge path. The control circuit receives, from the charging circuit, an indication of a change in power applied to the charging circuit and responsively generates a control signal and applies the control signal to the power supply circuit, which causes the power supply circuit to temporarily couple the load to the discharge path.