Pressure Sensor Alert System for Rehabilitation Injury Prevention
Solution Overview
Problem
Existing sensor technologies do not effectively monitor and alert users about excessive physical stresses during rehabilitation exercises, which can lead to injury from exceeding predetermined force levels.
Innovation Solution
A sensor device with pressure sensors and an alert mechanism is integrated into a shoe or prosthetic leg, using a flexible printed circuit board and microcontroller to detect pressure and transmit data to a reporting device, which alerts the user when threshold force levels are exceeded, providing real-time feedback and historical data analysis for improved exercise technique.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor devices are integrated into shoes or prosthetics for monitoring physical stresses, then monitoring capability is improved, but device complexity increases
Solution Approach 1:
The patent combines pressure sensors, alert mechanisms, and data processing capabilities into an integrated sensor device that is embedded within shoes or prosthetic legs. This merging of multiple functional components into a single unified device enables comprehensive pressure monitoring while minimizing the increase in overall device complexity.
Solution Approach 2:
The sensor device is designed to perform multiple functions: monitoring pressure in real-time, storing pressure data, comparing readings against threshold values, and providing alerts through multiple modalities (visual, auditory, tactile). This multi-functionality allows a single device to address various rehabilitation needs without requiring separate specialized devices for each function.
2Reliability
If real-time pressure monitoring and alerting is implemented, then user safety is improved, but energy consumption increases
Solution Approach 1:
The sensor device monitors pressure continuously but only triggers alerts when pressure threshold values are exceeded. The microcontroller periodically evaluates pressure readings against stored threshold values and only activates alert mechanisms when necessary, rather than maintaining constant high-energy alert states. This periodic evaluation approach ensures user safety while minimizing unnecessary energy consumption.
Solution Approach 2:
The device provides real-time feedback to users through alerts when excessive pressure is detected, enabling immediate corrective action. The feedback mechanism includes visual, auditory, and tactile alert modes that can be selected based on user preference and situation, providing reliable safety monitoring while allowing the system to remain in a low-power state during normal operation.
3Reliability
If multiple alert mechanisms are integrated into the sensor device, then alert reliability is improved, but device complexity increases
Solution Approach 1:
The patent integrates multiple types of alert mechanisms (visual LEDs, auditory buzzers, and tactile vibrators) into a single unified alert system within the sensor device. By merging these different alert modalities into one integrated subsystem controlled by a single microcontroller, the device achieves reliable multi-modal alerting while minimizing the increase in overall complexity compared to having separate independent alert devices.
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 sensor system effectively monitors and alerts users of excessive physical stresses, helping prevent injuries by providing real-time feedback and enabling healthcare professionals to analyze exercise techniques and recommend adjustments, thereby enhancing rehabilitation safety and effectiveness.
Implementation Method 1
pressure sensors for sensing pressure and generating a pressure data signal indicating the pressures sensed
Data Source
AI summary
A sensor device for monitoring physical stresses placed on a user has a sensor body with pressure sensors for sensing pressure and generating a pressure data signal indicating the pressures sensed. An alert mechanism functions to alert the user when the pressure sensed by the pressure sensors exceeds predetermined threshold force levels. The sensor device is utilized to enable a method of monitoring the physical stresses and alerting the user when the predetermined threshold force levels are exceeded.