Power Control Unit Distinguishes First Power-On to Reduce Startup Time
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Solution Overview
Problem
Existing electrical devices face inefficiencies when power is switched on and off by software, leading to repeated unnecessary processing and prolonged startup times due to displacement of internal mechanisms and changes in usage environments.
Innovation Solution
An electrical device comprising a controlling unit, a power supplying unit, and a power controlling unit that distinguishes between the first power-on after a hard-on and subsequent power-ons, thereby executing different processing to prevent unnecessary initialization and calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If processing related to preparation for use is performed each time the power is turned on, then the device ensures proper initialization, but unnecessary processing is repeatedly executed and startup time increases
Solution Approach 1:
The system performs initialization processing only when necessary (first power-on after power supply connection or power recovery), and stores the execution status. Subsequent power-on operations skip the initialization by checking this stored status, thereby avoiding unnecessary repeated processing while ensuring proper initialization when needed.
2Ease of operation
If the power is switched on and off by software in response to power key operations, then power management is achieved, but processing related to preparation for use may be unnecessarily repeated
Solution Approach 1:
The system uses a flag storage mechanism to record whether initialization processing has been executed. When power is turned on, the system checks this flag to determine whether to perform initialization again. This feedback mechanism prevents unnecessary repeated processing while maintaining proper power management functionality.
3Reliability
If initialization processing is executed every power-on, then device readiness is ensured, but unnecessary processing occurs during software power cycling
Solution Approach 1:
The system performs initialization processing only when necessary (first power-on after power supply connection or power recovery), and stores the execution status. Subsequent power-on operations skip the initialization by checking this stored status, thereby avoiding unnecessary repeated processing while ensuring proper initialization when needed.
Solution Approach 2:
The system automatically determines whether initialization is needed by checking the stored flag status, without requiring user intervention or complex external judgment. This self-service approach simplifies the control logic while ensuring device readiness.
Data Source
AI summary
An electrical device includes a controlling unit configured to control the electrical device, a power supplying unit configured to supply power to the controlling unit, and a power controlling unit configured to control supply and interruption of power with regard to the controlling unit by the power supplying unit. In a case where the controlling unit receives a supply of power from the power supplying unit under control of the power controlling unit, the controlling unit executes different processing based on whether or not the supply of power is a first supply of power after power-on with regard to the power supplying unit.