Position Detection Apparatus Gyro Sensor Bottom Area Reduction
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Solution Overview
Problem
Conventional handy mobile printers (HMPs) face challenges in reducing the size of their bottom part due to the need for two navigation sensors to detect the angle of rotation and position on a surface, which limits their portability and image formable area.
Innovation Solution
A position detection apparatus with a single navigation sensor and a gyro sensor, which reduces the size of the bottom part by allowing the HMP to detect movement and posture, enabling precise position calculation and expanding the image formable area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two navigation sensors are mounted to detect angle of rotation and position, then position detection precision is improved, but the size of the bottom part increases
Solution Approach 1:
The patent replaces the conventional optical navigation sensor system with a gyro sensor that uses mechanical rotation detection. The gyro sensor detects angular velocity through mechanical means (rotating mass or vibrating structure), eliminating the need for optical patterns and multiple sensors, thereby reducing bottom part area while maintaining detection precision
Solution Approach 2:
The gyro sensor performs multiple functions simultaneously: it detects both the angle of rotation and the movement amount on the sheet surface. This multi-functionality consolidates what previously required two separate navigation sensors into a single device, reducing the bottom part area while preserving position detection precision
2Measurement precision
If two navigation sensors are mounted to calculate angle of rotation, then angle detection precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the angle detection function from the optical navigation sensor system and assigns it to the gyro sensor. This separation allows the gyro sensor to specialize in angular measurement, simplifying the overall system architecture while maintaining or improving angle detection precision
Solution Approach 2:
The patent replaces the complex optical calculation system required for angle detection with a simpler mechanical gyro sensor that directly measures angular velocity. This substitution reduces computational complexity and sensor system complexity while preserving detection precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for a more compact design of HMPs, enhancing portability and expanding the area where images can be formed on a print medium without reducing precision, thus overcoming the limitations of conventional HMPs.
Implementation Method 1
a gyro sensor that detects an angle of rotation of the HMP with respect to a surface of the sheet
Implementation Method 2
The navigation sensor is a sensor that optically detects fine edges on the surface of a sheet, to detect the amount of movement every cycle time
Data Source
AI summary
A position detection apparatus configured to detect a position on a movement surface of a mounted object having the position detection apparatus mounted thereon, includes a moved amount detector configured to detect an amount of movement on the movement surface; a posture detector configured to detect at least a posture of the mounted object on the movement surface; and a position calculator configured to calculate the position of the mounted object, based on the amount of movement and the posture.