Wearable Angle Sensor Zero Setting Without Manual Initialization
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Solution Overview
Problem
Existing wearable devices for walking assistance require manual user intervention for zero setting, which can lead to incorrect settings and reduced usability due to the need for user participation in the initialization process.
Innovation Solution
A wearable device that automatically performs zero setting based on sensor data from a second angle sensor, determining a zero point position without user interaction, and includes a processor to control the zero setting process for angle sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual user intervention is required for zero setting, then the device can perform initialization, but user convenience deteriorates and incorrect settings may occur
Solution Approach 1:
The wearable device automatically performs zero setting for angle sensors using sensor data from the second angle sensor without requiring user intervention. The processor determines zero point positions based on angle changes measured during normal device operation, enabling the system to self-initialize and eliminate manual configuration steps while maintaining accurate zero point calibration.
2Ease of operation
If automatic zero setting is implemented, then user convenience improves, but device complexity increases due to additional sensor processing requirements
Solution Approach 1:
The second angle sensor serves dual purposes: it measures angle changes for control operations and simultaneously provides data for automatic zero setting. By reusing existing sensor hardware for multiple functions, the system achieves automatic initialization without adding dedicated zero-setting sensors or significantly increasing overall device complexity.
Solution Approach 2:
The patent replaces manual mechanical zero-setting procedures with automated sensor-based detection. Instead of requiring users to physically position components and manually configure zero points, the system uses the second angle sensor to detect angle changes and automatically calculates zero point positions, substituting mechanical user actions with electronic sensing and processing.
3Measurement precision
If multiple angle sensors are used for zero setting, then measurement precision improves, but device complexity and cost increase
Solution Approach 1:
The second angle sensor performs multiple functions including measuring angle changes for control operations and providing data for automatic zero setting. This multi-functional use of existing sensors achieves precise zero point detection without requiring additional dedicated sensors, thereby maintaining measurement precision while avoiding increased device complexity and cost.
Data Source
AI summary
A zero setting method for a wearable device, and/or a wearable device and an electronic device performing same. The zero setting method performed by the wearable device may include: determining whether zero resetting for a first angle sensor that measures an angle of a leg driving frame included in the wearable device is desired; and performing a first zero setting process for the first angle sensor by using a second angle sensor that measures an angle change in a first direction and an angle change in a second direction of the leg driving frame, in response to determining that the zero resetting is desired. The step for performing the first zero setting process may include: determining a first zero location on the basis of the angle change in the first direction and the angle change in the second direction, which are measured by the second angle sensor; and setting zero for the first angle sensor on the basis of the determined first zero location.