Exercise Machine Motion Sensor for Precise Load Tracking
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Solution Overview
Problem
Conventional exercise machines lack precise detection of user exercise goals, are cumbersome to adjust, and generate noise due to heavy iron weight stacks, and previous resistance mechanisms like oil or air pressure cylinders are difficult to calculate exercise load accurately.
Innovation Solution
An exercise machine equipped with a small motion sensor that includes a multiple-axis tracking sensor module, microprocessors, and a Bluetooth module to track user exercise, detecting angular velocity, acceleration, and geomagnetic changes to determine exercise effectiveness without the need for weight adjustments, using a resistance mechanism with an oil pressure cylinder and pivot points for precise load application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If iron weight stack is used as exercise load, then exercise resistance is provided, but it is heavy and not easy to adjust the exercise load precisely
Solution Approach 1:
The patent replaces the traditional mechanical iron weight stack system with an electronic control system that uses a motor to drive the curved bar. The exercise load is controlled electronically through current regulation rather than mechanically through weight stacks, enabling precise and easy adjustment of resistance levels without the need for physical weight changes.
Solution Approach 2:
The patent implements dynamic load adjustment where the exercise resistance can be changed in real-time during exercise through electronic control of the motor current. This allows the load to be dynamically adapted to user needs without stopping exercise or manually changing weight stacks.
2Force
If iron weight stack is pulled up by the steel wire and dropped, then exercise load is provided, but it creates loud noise which not only disturbing but also make people feel uncomfortable
Solution Approach 1:
The patent replaces the mechanical dropping mechanism of iron weight stacks with an electric motor-driven system. The motor smoothly accelerates and decelerates the curved bar, eliminating the impact noise generated by dropped weights. The exercise load is applied through controlled motor torque rather than gravitational impact.
3Quantity of substance
If conventional exercise machine is used, then exercise goal is set, but lack of device for precisely detecting whether users achieve the goal
Solution Approach 1:
The patent incorporates a sensor system that detects the position and motion of the curved bar, providing real-time feedback to the control system. This feedback mechanism precisely measures whether the user has achieved the preset exercise goals by monitoring parameters such as displacement, speed, and acceleration of the moving components.
Solution Approach 2:
The patent introduces an intermediary detection system consisting of sensors and a control unit that mediates between the user's physical exercise and the evaluation of exercise goals. The sensors detect motion parameters and the control unit processes this information to determine goal achievement, providing objective measurement rather than relying on user self-reporting.
4Force
If oil pressure cylinder or air pressure cylinder is used as resistance, then exercise load is provided, but not easy to calculate the exercise load
Solution Approach 1:
The patent replaces hydraulic or pneumatic resistance systems with an electric motor-driven system where exercise load is controlled through electrical current regulation. The load calculation becomes straightforward through electronic sensing and control, avoiding the complex pressure-volume relationships and calculation requirements of oil or air pressure cylinders.
Data Source
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AI summary
An exercise machine using motion sensor to track exercise, comprising: an exercise equipment (10), including a mainframe (11), the mainframe (11) is fixed and won't be moved by user's movement, an operating mechanism (20), the operating mechanism (20) is arranged on the mainframe (11) and it will follow the movement of the user; wherein the operating mechanism (20) having a motion sensor (40), inside the motion sensor (40) having a multiple-axis tracking sensor module (41) and a first microprocessor (42) for detecting the height displacement of the operating mechanism (20) and transmitting the height displacement signal to an electronic control device (50), then processing by a second microprocessor (53) arranged inside the electronic control device (50) to know whether the motion track of the user reach the preset position during exercise to ensure the effect of exercising.