Assisting Device Control System Tension Management
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Solution Overview
Problem
Conventional assisting devices apply force to wearers without ensuring appropriate tension, leading to discomfort and inappropriate force application due to inadequate determination of the fixed state of the brace relative to the body.
Innovation Solution
An assisting device control system that includes sensors to detect tension factors, a tension recognition part to assess these factors, and a driving control part that permits operation only within predetermined permission ranges, ensuring appropriate tension for comfortable and effective force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the assisting device determines only whether the brace is in a fixed state, then the device can start applying assisting force, but the brace may be fixed with excessive force causing discomfort or inappropriate force application
Solution Approach 1:
The patent changes the parameter for determining brace fixation from a binary fixed/not-fixed state to a tension magnitude parameter. The tension detection unit measures the actual tension value, and the control unit compares this value against a predetermined threshold to determine appropriate assisting force application, thereby preventing excessive force while enabling productivity.
Solution Approach 2:
The patent replaces the mechanical determination method (checking if brace is fixed) with a sensor-based detection system. The tension detection unit uses sensors to measure tension magnitude, substituting mechanical assessment with electronic measurement to achieve more precise control over assisting force application.
2Reliability
If the brace is fixed with excessive force to ensure it is securely attached, then the brace remains firmly attached to the body, but the wearer feels uncomfortable and the assisting force becomes inappropriate
Solution Approach 1:
The patent implements a feedback mechanism where the tension detection unit continuously monitors brace tension and feeds this information back to the control unit. The control unit adjusts or prevents assisting force application based on whether the tension is within the appropriate range, maintaining reliable fixation while ensuring wearer comfort through continuous monitoring and adjustment.
Solution Approach 2:
The patent introduces tension magnitude as a controllable parameter for determining both fixation security and comfort. By measuring and comparing tension values against predetermined thresholds, the system objectively determines appropriate fixation levels, replacing subjective comfort assessment with measurable parameters.
Data Source
AI summary
The disclosure provides an assisting device control system capable of appropriately fixing a brace to the body of a wearer. A control system S includes: a waist sensor 10f, a right leg sensor 14f, and a left leg sensor 14g detecting a tension factor when a brace is worn; a tension recognition part 25 recognizing a tension from the tension factor; and a driving control part 26 controlling the driving of an assisting device 1. The driving control part 26 permits the driving of the assisting device 1 if the recognized tension is within a permission range, which has a predetermined lower limit value and a predetermined upper limit value.