Operator Position Sensing With Inertial-Image Sensor Switching
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Solution Overview
Problem
Existing techniques for calculating positional information of an operator consume excessive power due to continuous imaging and image recognition processes, leading to high power consumption in the system.
Innovation Solution
An information processing apparatus that utilizes a combination of inertial sensors and image sensors to intermittently calculate positional information, using inertial sensors continuously and switching to image sensors only when the positional information from inertial sensors falls within a predefined range, thereby reducing power consumption while maintaining accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image sensors are used continuously for calculating positional information, then measurement precision is improved, but use of energy increases
Solution Approach 1:
The patent applies periodic action by switching between inertial sensors and image sensors based on whether positional information is within a predetermined range. When the position is within the range, image sensors are used intermittently rather than continuously, reducing power consumption while maintaining measurement precision when needed
Solution Approach 2:
The patent changes the operational parameter of the sensing system by switching between two different sensor types (inertial sensors and image sensors) based on the positional information state. This parameter change allows the system to optimize between power consumption and measurement precision dynamically
2Measurement precision
If image processing is executed constantly, then measurement precision is improved, but use of energy increases
Solution Approach 1:
Image processing is executed periodically rather than constantly, specifically when positional information determined by inertial sensors is within the predetermined range. This periodic execution maintains measurement precision when necessary while reducing overall power consumption
3Productivity
If inertial sensors are used continuously, then productivity is improved, but measurement precision decreases when position is outside predetermined range
Solution Approach 1:
The patent uses inertial sensors as an intermediary system that operates continuously to provide quick positional information. When this intermediate solution falls within the predetermined range, it suffices for maintaining precision. When outside the range, the system switches to image sensors for higher precision, thus combining the productivity of continuous inertial sensing with the precision of image-based sensing when needed
Data Source
AI summary
There is provided an information processing apparatus including: an acquisition unit that obtains first sensor information, which is output by a first sensor and is to be used to calculate positional information of an operator, and second sensor information, which is output by a second sensor and is to be used to calculate the positional information of the operator; and a calculation unit that calculates the positional information of the operator using the second sensor information in a case where the positional information of the operator calculated using the first sensor information is included in a set range set in advance.