Sensor Insole Cadence Tracking via Force and Acceleration Data
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Solution Overview
Problem
Existing shoe-mounted sensor devices do not effectively track specific running characteristics such as sequential force strikes, flight time, ground contact time, step time, and cadence, which are crucial for athletes to improve their performance and adhere to predefined workout parameters.
Innovation Solution
A sensor system comprising a shoe-mounted insole with force sensors and an accelerometer that transmits data to a portable electronic device, where a monitoring program receives and analyzes the data to determine actual cadence, compares it with desired cadence, and reports the results, enabling gait analysis and tracking of specific running characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional sensor devices are used, then basic speed and distance measurement is achieved, but specific running characteristics such as sequential force strikes, flight time, ground contact time, step time, and cadence cannot be tracked
Solution Approach 1:
The patent combines multiple sensor types (force sensors and accelerometers) into a single integrated shoe-mounted system. The force sensors detect ground reaction forces while accelerometers capture motion dynamics, and both data streams are processed together by a single processor to extract multiple running characteristics simultaneously, resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The sensor system is designed to perform multiple functions: measuring force strikes, calculating flight time, determining ground contact time, tracking step time, and monitoring cadence. This multi-functional approach allows one device to track all specific running characteristics, improving measurement precision without proportionally increasing device complexity
2Loss of information
If shoe-mounted sensor devices are used, then basic activity monitoring is achieved, but real-time gait analysis and workout parameter adherence cannot be provided
Solution Approach 1:
The system continuously monitors running parameters and provides real-time feedback to the athlete. The processor compares actual cadence and gait metrics against target values, enabling athletes to adjust their performance in real-time. This feedback mechanism ensures comprehensive gait analysis data is captured and utilized, reducing information loss while managing processing complexity through efficient algorithms
3Reliability
If basic speed and distance sensors are used, then simple activity tracking is achieved, but performance improvement and injury reduction through gait monitoring cannot be realized
Solution Approach 1:
The patent replaces simple mechanical speed and distance sensors with a more sophisticated system combining force sensors and accelerometers. This substitution enables accurate measurement of running mechanics including ground reaction forces and motion dynamics, significantly improving data reliability for performance analysis and injury prevention while the integrated processing keeps system complexity manageable
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 system allows athletes to exercise more effectively, reduces injuries, and provides accurate data for sporting and rehabilitation activities by monitoring and analyzing running mechanics in real-time.
Implementation Method 1
The sensor system includes force sensors and accelerometers for measuring the movement of the runner's feet
Implementation Method 2
force sensors and accelerometers for measuring the movement of the runner's feet, and force exerted against the insole of the shoe
Data Source
AI summary
A sensor system for performing gait analysis of a person includes a sensor system that includes a pair of sensor insoles that include a plurality of force sensors, an accelerometer, and a transmitter for transmitting data to a portable electronic device. A monitoring program operably installed on the portable electronic device performs the following steps: receiving a desired cadence; receiving the data from the sensor insoles; determining an actual cadence of the person's footsteps based upon the data received; and comparing the actual cadence with the desired cadence.