Dual-Laser Sensor Module for Weight-Plate Motion Accuracy
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Solution Overview
Problem
Users face difficulties in accurately identifying their exercise state and motivation during weight exercises due to incorrect measurement by sensor modules, leading to a decrease in exercise effectiveness.
Innovation Solution
A weight exercise apparatus equipped with a sensor module that includes first and second laser sensors to accurately measure the movement of weight plates, compensating for measurement errors caused by environmental changes, and a user interface to display exercise state information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single laser sensor is used to detect weight plate movement, then the device complexity is reduced, but measurement precision deteriorates due to environmental factors
Solution Approach 1:
The sensor module is segmented into multiple independent laser sensors (first laser sensor and second laser sensor) that detect different reference points. This segmentation allows each sensor to focus on specific measurement tasks, with the first sensor detecting weight plate movement and the second sensor detecting environmental changes, thereby improving overall measurement precision without requiring a single complex sensor system
Solution Approach 2:
The patent introduces an intermediary compensation mechanism that uses the second laser sensor to detect environmental factors (temperature, humidity) and translates these into compensation values. This intermediary approach allows the system to correct measurement errors caused by environmental changes, maintaining high measurement precision while using relatively simple sensor hardware
2Device complexity
If environmental factors are not compensated, then the device complexity is reduced, but measurement precision deteriorates due to temperature and humidity changes
Solution Approach 1:
The system performs preliminary detection of environmental factors (temperature and humidity) using the second laser sensor before they affect the measurement. By detecting these environmental changes in advance and calculating compensation values beforehand, the system can correct measurement errors before they occur, maintaining precision without requiring complex real-time compensation hardware
Solution Approach 2:
The patent implements a feedback mechanism where the second laser sensor continuously monitors environmental conditions and feeds this information back to the processor. The processor then adjusts the measurement data from the first laser sensor using compensation values derived from the environmental feedback, creating a closed-loop system that maintains measurement precision despite environmental variations
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 apparatus provides accurate feedback on exercise state and motivation, enhancing user engagement and exercise effectiveness by correcting measurement errors through environmental compensation.
Implementation Method 1
a first laser sensor configured to irradiate a first laser beam toward the weight plate or a component moving together with the weight plate to detect a moving distance of the weight plate when the weight plate moves
Implementation Method 2
a second laser sensor configured to irradiate a second laser beam toward a component that does not move in spite of movement of the weight plate when the weight plate moves
Data Source
AI summary
Provided is a weight exercise apparatus. The weight exercise apparatus includes an exercise main body in which movement is generated according to a user's weight exercise, a sensor module configured to detect movement of the exercise main body, and a processor configured to control a user interface (UI) unit to display a UI element indicating an exercise state of a user corresponding to the detected movement on a UI screen wherein the sensor module includes a first laser sensor configured to irradiate a first laser beam toward the weight plate or a component moving together with the weight plate to detect a moving distance of the weight plate when the weight plate moves and a second laser sensor configured to irradiate a second laser beam toward a component that does not move in spite of movement of the weight plate when the weight plate moves.