Exercise Machine Weight Detection Using Range Meter and Reflector
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional weight training machines lack a convenient method for users to track and record their workout progress, relying on memory or manual notebooks, and existing systems face challenges with power consumption and user interaction during exercise.
Innovation Solution
A measurement system for exercise machines that includes a range meter and a reflector member to measure the distance of the engaging member to determine the weight, combined with an operation detection mechanism using sensors like motion and proximity sensors to track exercise data, such as weight settings and repetitions, and transmit data wirelessly for display and recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional weight machines use manual tracking methods (memory or notebooks), then the device complexity is low, but the ease of operation deteriorates due to inconvenient tracking and recording of workout progress
Solution Approach 1:
The system automatically detects weight selection through the position of the engaging member relative to the weight stack, and automatically tracks repetitions through motion sensors, eliminating the need for manual recording by users
Solution Approach 2:
Manual tracking methods are replaced with electronic sensors including motion sensors to detect lifting movements and proximity sensors to detect weight selection, converting mechanical exercise actions into electronic data for automatic tracking
2Ease of operation
If existing measurement systems use continuous power supply, then the reliability of data tracking is improved, but the ease of operation deteriorates due to requirement of user interaction during exercise
Solution Approach 1:
The system automatically detects and records all workout parameters including weight selection, number of repetitions, and exercise duration without requiring any user input during the exercise session
Solution Approach 2:
The system provides real-time feedback through display of workout statistics and progress tracking, enabling users to monitor their performance without manual intervention while maintaining data accuracy
3Measurement precision
If the range meter continuously measures distance to track weight selection, then the measurement precision is improved, but the use of energy deteriorates due to increased power consumption
Solution Approach 1:
The range meter operates periodically rather than continuously, activating only when motion is detected or when weight selection is likely to change, thereby maintaining measurement accuracy while significantly reducing power consumption
Solution Approach 2:
The measurement system dynamically adjusts its operation mode based on exercise state, using motion detection to trigger range meter measurements only when needed during exercise sessions
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 convenient tracking and recording of workout data with minimal user interaction, reduces power consumption, and prevents accidental tampering, providing accurate and efficient exercise data tracking.
Implementation Method 1
a range meter and a reflector member, wherein one of the cooperating members is connected to the lifting mechanism and the other of the cooperating members is connected to the engaging member, wherein the range meter is directed to measure a distance to the reflector member
Data Source
Figure 1
Figure 2A~2D
Figure 3~4A
AI summary
A measurement system for use in an exercise machine (100), which exercise machine comprises a lifting mechanism (114) and an engaging member (110) for selectively engaging a number of stacked weights (102) to the lifting mechanism, the measurement system comprising a pair of cooperating members including a range meter (111) and a reflector member (1101), wherein one of the cooperating members is connected to the lifting mechanism and the other of the cooperating members is connected to the engaging member, wherein the range meter is directed to measure a distance to the reflector member to determine a distance which correlates to the weight of the selectively engaged weights.