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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

Measurement of the pedaling force over the whole measurement time.
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Fig7: Measurement of the pedaling force over the whole measurement time.

Mentions: Figures 7 and8 demonstrate the evaluation of the force measurement. In the evaluation, the maximal values (marked with red points) were split in two ranges, averaged, and compared. The approximate maximum value in the measurement with electromotor was 18% lower than the one in the measurement without electromotor. After the half of the time, the average maximum value of the force dropped down to less than 70 N. This means that the force which is needed to hold the constant velocity decreases.Table 1


Optimization of electric bicycle for youths with disabilities.

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

Measurement of the pedaling force over the whole measurement time.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Fig7: Measurement of the pedaling force over the whole measurement time.
Mentions: Figures 7 and8 demonstrate the evaluation of the force measurement. In the evaluation, the maximal values (marked with red points) were split in two ranges, averaged, and compared. The approximate maximum value in the measurement with electromotor was 18% lower than the one in the measurement without electromotor. After the half of the time, the average maximum value of the force dropped down to less than 70 N. This means that the force which is needed to hold the constant velocity decreases.Table 1

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