Limits...
Optimization of electric bicycle for youths with disabilities.

Blumenstein T, Zeitlmann H, Alves-Pinto A, Turova V, Lampe R - Springerplus (2014)

Bottom Line: If the distance to other objects reduces, an acoustic signal is sent.The results demonstrate that an adapted E-bike can be improved to provide better space orientation for people with perceptual disorders and to measure training conditions of patients.Moreover, these enable individual adjustment of the electric motor power to optimize comfort and therapy effect.

View Article: PubMed Central - PubMed

Affiliation: Forschungseinheit für Cerebralparesen und Kinderneuroorthopädie der Buhl-Strohmaier Stiftung, Department of Orthopedics, Clinic 'rechts der Isar', Technical University of Munich, Ismaningerstr. 22, Munich, 81675 Germany.

ABSTRACT
Cerebral palsy is a group of neurodevelopmental disorders that affect a person's ability to move and to maintain balance and posture. People with cerebral palsy have also perception and space orientation deficits so that special assistance devices should be developed to compensate these handicaps. The objective was to optimize an adapted electric bicycle (E-bike) for youths with neurodevelopmental disorders. An adapted E-bike was provided with ultrasonic sensors that measure distances to objects. If the distance to other objects reduces, an acoustic signal is sent. Additionally, a self-created force plate was fixed on the pedal to evaluate the muscle performances during biking. An experiment with the ultrasound warning system confirmed that acoustic feedback was helpful in avoiding obstacles. The measurement of the blood pressure, the heart frequency and the pedaling force during biking approved that the training condition of the test person can be registered and enables tuning the power of the electric motor to individual requirements. The results demonstrate that an adapted E-bike can be improved to provide better space orientation for people with perceptual disorders and to measure training conditions of patients. Moreover, these enable individual adjustment of the electric motor power to optimize comfort and therapy effect.

No MeSH data available.


Related in: MedlinePlus

Design of the force measurement plate.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4230816&req=5

Fig3: Design of the force measurement plate.

Mentions: For the force measurement plate, a FlexiForce Sensor (Tekscan) with a sensing area of 10-mm diameter was used. The sensor was fixed between two aluminum plates (see Figure 3 for the corresponding CAD-drawing). The upper plate was supplied with a special platform to ensure that the force is only applied to the active region of the sensor. After relieving the load the plates should return to the initial position. To this end, four springs were fixed on the borders of the lower plate. The force sensor was calibrated using known weights.Figure 2


Optimization of electric bicycle for youths with disabilities.

Blumenstein T, Zeitlmann H, Alves-Pinto A, Turova V, Lampe R - Springerplus (2014)

Design of the force measurement plate.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4230816&req=5

Fig3: Design of the force measurement plate.
Mentions: For the force measurement plate, a FlexiForce Sensor (Tekscan) with a sensing area of 10-mm diameter was used. The sensor was fixed between two aluminum plates (see Figure 3 for the corresponding CAD-drawing). The upper plate was supplied with a special platform to ensure that the force is only applied to the active region of the sensor. After relieving the load the plates should return to the initial position. To this end, four springs were fixed on the borders of the lower plate. The force sensor was calibrated using known weights.Figure 2

Bottom Line: If the distance to other objects reduces, an acoustic signal is sent.The results demonstrate that an adapted E-bike can be improved to provide better space orientation for people with perceptual disorders and to measure training conditions of patients.Moreover, these enable individual adjustment of the electric motor power to optimize comfort and therapy effect.

View Article: PubMed Central - PubMed

Affiliation: Forschungseinheit für Cerebralparesen und Kinderneuroorthopädie der Buhl-Strohmaier Stiftung, Department of Orthopedics, Clinic 'rechts der Isar', Technical University of Munich, Ismaningerstr. 22, Munich, 81675 Germany.

ABSTRACT
Cerebral palsy is a group of neurodevelopmental disorders that affect a person's ability to move and to maintain balance and posture. People with cerebral palsy have also perception and space orientation deficits so that special assistance devices should be developed to compensate these handicaps. The objective was to optimize an adapted electric bicycle (E-bike) for youths with neurodevelopmental disorders. An adapted E-bike was provided with ultrasonic sensors that measure distances to objects. If the distance to other objects reduces, an acoustic signal is sent. Additionally, a self-created force plate was fixed on the pedal to evaluate the muscle performances during biking. An experiment with the ultrasound warning system confirmed that acoustic feedback was helpful in avoiding obstacles. The measurement of the blood pressure, the heart frequency and the pedaling force during biking approved that the training condition of the test person can be registered and enables tuning the power of the electric motor to individual requirements. The results demonstrate that an adapted E-bike can be improved to provide better space orientation for people with perceptual disorders and to measure training conditions of patients. Moreover, these enable individual adjustment of the electric motor power to optimize comfort and therapy effect.

No MeSH data available.


Related in: MedlinePlus