Hall Sensor Torque Measurement in Exercise Equipment
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Solution Overview
Problem
Conventional exercise equipment lacks a precise method to measure torque resistance, relying on user feedback for adjustments, which is subjective and does not provide real-time torque values.
Innovation Solution
The exercise equipment incorporates a resistance device with a four-bar linkage mechanism and a Hall sensing module to accurately sense resistance changes, allowing for real-time torque measurement and adjustment through a torque analyzer and display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional exercise equipment uses a resistance member and torque generating mechanism without a sensing unit, then the device structure remains simple, but the user can only learn of the approximate torque value by individual feelings without real-time torque data
Solution Approach 1:
The patent replaces subjective human feeling-based torque assessment with an objective electronic sensing system. A Hall sensing module detects the position of a magnetic member attached to the rotating torque generating unit, converting mechanical rotation into electrical signals that represent real-time torque values. This substitution provides precise measurement while keeping the mechanical structure relatively simple.
Solution Approach 2:
The patent introduces a magnetic member as an intermediary element between the torque generating unit and the Hall sensing module. The magnetic member rotates with the torque generating unit, and its magnetic field variations are detected by the Hall sensing module to indicate torque changes, enabling indirect but accurate torque measurement without direct mechanical contact between the sensor and moving parts.
2Ease of operation
If the resistance member position is adjusted manually without real-time feedback, then the adjustment mechanism remains simple, but the user cannot accurately control or monitor the torque magnitude
Solution Approach 1:
The patent implements a feedback system where the Hall sensing module continuously monitors the position of the magnetic member on the torque generating unit and converts it into torque value information. This real-time feedback is displayed to the user, allowing them to see the actual torque being applied and make informed adjustments to achieve their desired training intensity.
Solution Approach 2:
The patent replaces manual estimation of torque magnitude with electronic sensing and digital display. The Hall effect sensor provides objective, real-time torque data that is displayed to the user, eliminating the need for subjective judgment and enabling precise torque control during exercise.
3Loss of information
If a Hall sensing module and magnetic member are added to sense resistance changes, then real-time torque values can be obtained, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent uses a magnetic member as a non-contact intermediary that rotates with the torque generating unit. This magnetic intermediary allows the Hall sensing module to detect torque changes without mechanical contact or complex transmission mechanisms, simplifying the overall system while enabling real-time torque measurement.
Solution Approach 2:
The patent replaces complex mechanical torque measurement mechanisms with an electronic Hall effect sensing system. The magnetic field-based detection method eliminates the need for mechanical linkages, gears, or direct contact sensors, reducing mechanical complexity and potential failure points while enabling real-time digital torque feedback.
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
Enables users to instantly and accurately determine torque values during exercise, enhancing training precision and convenience in manufacturing and assembly.
Implementation Method 1
a Hall sensing module mounted to the first link, and disposed for outputting a sensing signal generated by magnetic field variation induced by a relative movement between the Hall sensing module and the magnetic member
Data Source
AI summary
An exercise equipment includes a torque generating mechanism, and a resistance adjusting mechanism including a resistance applying unit that includes a fixed seat, a contact member pivotally connected to the fixed seat, a first link pivotally connected to the fixed seat, and a second link pivotally connected between the first link and contact member, a resistance sensing unit that includes a magnetic member mounted to the second link and movable relative to the first link, and a Hall sensing module mounted to the first link, and disposed for outputting a sensing signal generated by magnetic field variation induced by a relative movement between the Hall sensing module and the magnetic member.