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Updated: Feb 2, 2026
08:55
Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion
Published on: February 5, 2020
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Power Wheelchair Footplate Pressure and Positioning Sensor
Summary
A new sensor system monitors power wheelchair foot position in real-time to prevent dangerous misplacements. This technology aims to reduce severe injuries for individuals with spinal cord injuries.
Area of Science:
- Biomedical Engineering
- Rehabilitation Technology
Background:
- Power wheelchair users face significant injury risks from improper foot positioning on the footplate.
- Foot misplacement can lead to severe consequences such as collisions or foot dragging, particularly for individuals with spinal cord injuries.
- Existing methods struggle to immobilize feet safely due to pressure relief concerns, leaving users unaware of vulnerable positions.
Purpose of the Study:
- To develop and evaluate a novel sensor system for real-time monitoring of foot position in power wheelchairs.
- To reduce the incidence of severe injuries associated with foot misplacement during wheelchair operation.
Main Methods:
- Development of a sensor array incorporating force-sensing resistors and infrared distance sensors to detect foot pressure and location.
- Fabrication of sensor arrays on printed circuit boards, encapsulated for durability and environmental resistance.
- Real-time data transmission (10 Hz) via Bluetooth Low Energy to an iOS application for user notification.
Main Results:
- The sensor system successfully detected foot pressures and position data under typical usage conditions.
- The fabricated sensors demonstrated functionality and readiness for further testing.
- An accompanying iOS application was developed to alert users to vulnerable foot positions.
Conclusions:
- The developed sensor system is a promising tool for enhancing the safety of power wheelchair users.
- This technology has the potential to significantly mitigate injury risks for individuals with spinal cord injuries.
- The system is prepared for advanced clinical trials with the target user group.
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