Device Control Apparatus Voltage Supply Management
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Solution Overview
Problem
Devices using batteries as power supplies face issues with voltage fluctuations, leading to incomplete resume processes due to insufficient voltage supply, especially when multiple devices are connected, resulting in increased time and power consumption for resuming operations.
Innovation Solution
A device control apparatus with a monitoring unit that distinguishes between target and non-target devices, managing voltage supply and operation modes to prioritize resume processes for target devices while minimizing power consumption, using an accumulation unit to maintain operation during voltage drops and initializing non-target devices upon voltage recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage supply is provided to all devices simultaneously during resume process, then all devices can resume operation, but the battery voltage may be insufficient causing resume failure
Solution Approach 1:
The patent divides devices into two groups: first group devices receive voltage supply during resume process, while second group devices are initialized after resume completion. This segmentation allows the system to manage limited battery voltage capacity by prioritizing resume operations for some devices while deferring initialization of others, preventing voltage insufficiency during the critical resume phase.
2Productivity
If resume process is executed for all devices, then complete system recovery is achieved, but power consumption increases and resume time is extended
Solution Approach 1:
The patent performs preliminary voltage supply to the first group of devices during the resume process before the second group devices are initialized. This preliminary action ensures that critical devices can resume operations with available voltage capacity, achieving partial system recovery quickly, while the remaining devices are brought online afterward when voltage capacity is restored.
3Reliability
If voltage supply is stopped to some devices during resume, then battery voltage capacity is preserved for critical devices, but non-target devices cannot resume operation
Solution Approach 1:
The patent applies different voltage supply strategies to different device groups based on their operational criticality. The first group devices receive voltage supply during resume process to ensure reliable recovery, while the second group devices have voltage supply stopped during resume and are initialized afterward. This local differentiation optimizes system reliability for critical devices while maintaining overall operational availability.
Data Source
AI summary
A device control apparatus according to an embodiment includes a monitoring unit, a first processing unit, and a second processing unit. The monitoring unit monitors a state of voltage supply from a battery. When the start of the voltage supply is detected, the first processing unit starts the voltage supply to some devices, operates in a first operation mode, and executes a resume process of the devices. When the resume process is completed, the second processing unit starts the voltage supply to devices other than some devices, initializes states of the devices, and operates in a second operation mode in which consumption power is larger than consumption power of the first operation mode.