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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

Distance detection design. (A) Ultrasonic sensor; (B) Retainer with mounted distance measurement unit.
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Fig1: Distance detection design. (A) Ultrasonic sensor; (B) Retainer with mounted distance measurement unit.

Mentions: To measure distances, the ultrasonic ranging module HC-SR04 (see Cytron Technologies2013 and Figure 1A) with the ranging accuracy of 3 mm was used. With this sensor, distances between 2 cm and 400 cm can be registered. For mounting the distance measurement unit, an aluminum retainer (see Figure 1B) was used. It ensures that the sensors will always be in the same position related to the wheels. Four sensors were placed on the wheels of the bicycle, two in driving direction and one on each side. The position of the sensors allowed a regular assessment of the direction of travel.Figure 1


Optimization of electric bicycle for youths with disabilities.

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

Distance detection design. (A) Ultrasonic sensor; (B) Retainer with mounted distance measurement unit.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Fig1: Distance detection design. (A) Ultrasonic sensor; (B) Retainer with mounted distance measurement unit.
Mentions: To measure distances, the ultrasonic ranging module HC-SR04 (see Cytron Technologies2013 and Figure 1A) with the ranging accuracy of 3 mm was used. With this sensor, distances between 2 cm and 400 cm can be registered. For mounting the distance measurement unit, an aluminum retainer (see Figure 1B) was used. It ensures that the sensors will always be in the same position related to the wheels. Four sensors were placed on the wheels of the bicycle, two in driving direction and one on each side. The position of the sensors allowed a regular assessment of the direction of travel.Figure 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