Processor Frequency Control for Battery Overload Prevention
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Solution Overview
Problem
Electronic devices experience unexpected shutdowns due to battery overload when an external power supply is suddenly disconnected, leading to potential overload and shutdown issues.
Innovation Solution
An electronic device with a processor, battery, charging circuit, and arithmetic logic unit that transmits disconnection signals to reduce the processor's frequency from a preset to a low frequency upon external power disconnection, preventing battery overload through a controlled frequency reduction mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the processor operates at preset frequency when external power supply is disconnected, then processing speed is maintained, but battery overload occurs causing unexpected shutdown
Solution Approach 1:
The processor operating frequency is made dynamic rather than fixed. The system automatically adjusts the processor frequency based on power supply status: operating at preset frequency when external power is available, and switching to low frequency when external power is disconnected. This dynamic adjustment prevents battery overload while maintaining processing capability, resolving the contradiction between speed and reliability.
Solution Approach 2:
The processor frequency parameter is changed based on power supply conditions. The arithmetic logic unit detects external power disconnection and generates control signals that change the processor frequency from preset to low frequency. This parameter change allows the system to adapt to different power conditions, preventing battery overload while maintaining operation.
2Reliability
If the processor frequency is reduced to prevent battery overload, then device reliability is improved, but processing speed decreases
Solution Approach 1:
The system dynamically adjusts processor frequency based on real-time power supply status detection. When external power is available, the processor operates at full preset frequency for maximum speed. When external power is disconnected, the system automatically reduces frequency to low frequency to prevent battery overload. This dynamic behavior resolves the contradiction by adapting processing speed to available power resources.
Solution Approach 2:
The arithmetic logic unit detects external power disconnection and generates control signals to reduce processor frequency before battery overload can occur. This preliminary action prevents the harmful effect of battery overload while maintaining device operation, resolving the contradiction between reliability and speed by taking preventive measures.
3Reliability
If rapid frequency reduction is implemented upon power disconnection, then battery overload is prevented, but system complexity increases
Solution Approach 1:
An arithmetic logic unit is introduced as an intermediary component between the power supply system and the processor. This unit detects external power disconnection and generates appropriate control signals to adjust processor frequency. While this adds a component, it provides intelligent power management that prevents battery overload, resolving the contradiction between reliability and complexity through a dedicated control mechanism.
Solution Approach 2:
The system implements feedback control where the arithmetic logic unit continuously monitors power supply status and adjusts processor frequency accordingly. When external power is disconnected, the feedback signal triggers frequency reduction to prevent battery overload. This feedback mechanism provides reliable battery protection while maintaining relatively simple system architecture through automated control.
Data Source
AI summary
An electronic device includes a processor, a battery, a charging circuit, a controller, and an arithmetic logic unit. The processor is capable of operating at a preset frequency or a low frequency. The charging circuit is electrically connected to an external power supply and a battery and transmits a disconnection signal and to be powered by the battery when the external power supply and the charging circuit are changed from a connected state to a disconnected state. The controller is configured to transmit a first control signal when the external power supply and the charging circuit are changed from the connected state to the disconnected state. The arithmetic logic unit is configured to transmit a frequency reduction signal to the processor according to the disconnection signal and the first control signal, so that the processor reduces the preset frequency to the low frequency and operates at the low frequency.