Wearable Exercise Device With DC-Corrected Hip Torque Control
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Solution Overview
Problem
Existing wearable devices lack the ability to provide a torque appropriate for repetitive movements, particularly for exercises involving hip joint angles, without correcting for direct current (DC) components, which can affect the accuracy and effectiveness of the assistance or resistance provided.
Innovation Solution
A wearable device equipped with a driving module, angle sensors, and a processor that corrects the DC component of hip joint angles to determine and output a targeted torque value based on the user's movement information, using a motor and drive circuitry to provide assistance or resistance forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If DC component correction is not applied to hip joint angle data, then the device structure remains simple, but the accuracy of torque determination deteriorates
Solution Approach 1:
The patent applies preliminary action by performing DC component correction on hip joint angle data before using it for torque determination. The processor removes DC components from sensor signals in advance, ensuring that subsequent torque calculations are based on corrected, accurate angle data, thereby improving measurement precision without adding complex hardware
2Reliability
If DC component correction is applied to hip joint angle data, then the accuracy of exercise assistance improves, but the processing time and computational load increase
Solution Approach 1:
The patent replaces complex mechanical signal processing with electronic/digital processing. The processor uses electronic filtering algorithms to remove DC components from sensor signals, which is computationally efficient and can be performed in real-time without significant processing delay, thus improving reliability while minimizing time loss
3Measurement precision
If the device outputs torque based on uncorrected hip joint angles, then the response speed is fast, but the precision of torque application deteriorates
Solution Approach 1:
The patent performs DC component correction as a preliminary step before torque determination, preparing the angle data in advance. This preprocessing approach ensures that when torque is calculated and applied, it is based on already-corrected accurate data, maintaining both precision and fast response speed without compromising either
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 device enhances the accuracy and effectiveness of exercises by providing a torque tailored to the user's hip joint movements, improving exercise performance and posture through precise assistance or resistance.
Implementation Method 1
a driving module, comprising a motor and/or drive circuitry, configured to output a torque
Data Source
AI summary
A wearable exercise device may obtain a left hip joint angle and a right hip joint angle of a user using at least one angle sensor, process the left hip joint angle and the right hip joint angle to correct a direct current (DC) component of each of the left hip joint angle and the right hip joint angle, determine a first torque value based on the processed left hip joint angle, determine a second torque value based on the processed right hip joint angle, determine one of the first torque value and the second torque value as a target torque value based on movement information of the user, and control a driving module such that a torque based on the determined target torque value is output by the driving module.