Dynamic Sensor Accuracy Control for Wearable Power Optimization
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Solution Overview
Problem
Existing self-position estimation and orientation estimation technologies for wearable devices like HMDs do not adequately balance measurement accuracy with power consumption, often providing either excessively high or low accuracy, leading to inefficient power use.
Innovation Solution
An information processing apparatus that acquires and controls sensor accuracy based on the specific requirements of applications, using a control unit to adjust sensor operation according to the needed accuracy, thereby optimizing power consumption while maintaining required measurement precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor measurement accuracy is increased to satisfy application requirements, then measurement precision is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic sensor control where the control unit adjusts sensor operation modes based on real-time assessment of application requirements. The system transitions between different measurement accuracy levels and sensor activation states dynamically, rather than maintaining a fixed high-accuracy mode, thereby optimizing the balance between measurement precision and power consumption.
Solution Approach 2:
The control unit modifies sensor operation parameters such as measurement frequency, resolution, and activation state based on the assessed accuracy requirements. By changing these operational parameters dynamically, the system can reduce power consumption when high accuracy is not needed while maintaining measurement precision when required by the application.
2Use of energy by moving object
If sensor operation is reduced to suppress power consumption, then power consumption is decreased, but measurement accuracy deteriorates
Solution Approach 1:
The system employs a feedback mechanism where the control unit continuously monitors application performance and measurement quality. Based on this feedback, the control unit adjusts sensor operation levels to maintain sufficient measurement accuracy while minimizing power consumption. The feedback loop ensures that accuracy is not compromised below the threshold required by the application.
Solution Approach 2:
The patent applies partial action by activating only the necessary portion of sensor capabilities required by the application. Instead of operating all sensors at full accuracy, the system uses just enough measurement capacity to satisfy application needs, thereby reducing power consumption while maintaining adequate measurement precision.
3Measurement precision
If high accuracy measurement is provided to all applications, then measurement precision is improved, but power consumption increases unnecessarily
Solution Approach 1:
The patent implements local quality by providing different measurement accuracy levels to different applications based on their specific requirements. Instead of uniformly applying high accuracy to all applications, the control unit tailors the measurement quality to each application's needs, ensuring that each receives only the necessary level of precision, thereby optimizing overall power consumption.
Solution Approach 2:
The control unit dynamically changes operational parameters for different applications, adjusting measurement frequency, resolution, and sensor selection based on each application's accuracy requirements. This parameter customization allows the system to deliver appropriate measurement quality to each application without the excessive power consumption associated with universal high-accuracy operation.
4Use of energy by moving object
If low accuracy measurement is provided to suppress power consumption, then power consumption is decreased, but application performance deteriorates
Solution Approach 1:
The feedback mechanism monitors application performance metrics and measurement quality in real-time. When performance degradation is detected, the control unit adjusts sensor operation to restore sufficient accuracy, ensuring that power consumption reduction does not compromise application reliability below acceptable thresholds.
Solution Approach 2:
The system applies partial action by using just enough measurement accuracy to maintain application performance, avoiding both excessive power consumption from high accuracy and performance degradation from too low accuracy. The control unit carefully calibrates the measurement level to satisfy the minimum performance requirements.
Data Source
AI summary
Provided is a mechanism that enables the balance between the satisfaction of measurement accuracy required for an application and the suppression of power consumption. An information processing apparatus includes a control unit that acquires information indicating required accuracy of measurement information based on a result of detection by a sensor from the application that uses the measurement information, and controls the sensor on the basis of the information indicating the required accuracy.