Portable Device Self-Calibration Voltage Frequency Control
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Solution Overview
Problem
Portable devices, such as smartphones, become unstable due to damaged or aged components and power-supply variations on printed circuit boards, leading to operational characteristics that deviate from design specifications, necessitating a calibration procedure to ensure stability and performance.
Innovation Solution
A portable device with two processors, where the first processor performs an initial procedure and a calibration procedure by decreasing operation voltage and frequency, and the second processor monitors and stores the adjusted values, resetting the first processor to perform a normal boot when the calibration is complete or fails, ensuring stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a calibration procedure is performed to stabilize operational characteristics, then device stability and performance conformance improve, but device complexity and calibration time increase
Solution Approach 1:
The calibration procedure is automatically executed during the initial boot-up phase of the portable device, before normal operations begin. This preliminary action ensures that calibration is performed once during manufacturing or initial setup, stabilizing operational characteristics without requiring repeated calibration interventions later.
Solution Approach 2:
The system performs self-calibration by automatically detecting operational characteristics deviations and executing calibration routines without external intervention. The processor monitors its own operational parameters and triggers calibration when thresholds are exceeded, enabling the device to maintain stability autonomously.
2Measurement precision
If calibration is performed frequently to maintain performance specifications, then operational precision improves, but loss of time and productivity decrease
Solution Approach 1:
The calibration procedure is executed periodically based on predetermined conditions such as time intervals, operational cycles, or detected performance degradation thresholds. This periodic approach maintains operational precision by calibrating only when necessary, rather than continuously or at fixed intervals regardless of actual need.
Solution Approach 2:
The system continuously monitors operational characteristics and uses this feedback to determine when calibration is needed. When monitored parameters deviate from specified ranges, the system automatically triggers calibration, ensuring precision is maintained only when deviations occur, thereby minimizing unnecessary calibration time loss.
3Reliability
If calibration adjusts voltage and frequency settings to optimal values, then device stability improves, but energy consumption patterns change
Solution Approach 1:
The calibration procedure dynamically adjusts operational parameters including voltage and frequency settings to optimal values based on actual device performance and environmental conditions. These parameter changes are made to achieve stability while the system continuously adapts to balance performance requirements with energy consumption efficiency.
Data Source
AI summary
A portable device is provided. A first processor performs an initial procedure according to an operation clock with a first frequency value and an operation voltage with a first voltage value, and performs a calibration procedure according to the operation clock with a second frequency value and the operation voltage with a second voltage value when the initial procedure has been performed and a self-calibration event is present. A second processor detects whether a specific function of the calibration procedure is being performed by the first processor. The second processor stores the second frequency value and the second voltage value into a storage unit after the calibration procedure is performed. The second voltage value is lower than the first voltage value, and the second frequency value is lower than the first frequency value.