CONTROL DEVICE OF MOTOR-ASSISTED WHEELCHAIR

• Main Authors: ISOMURA TOSHIAKI, KAWAKURA HIROKO
• Format: Patent
• Language: English
• Published: 22.01.2002
• Edition: 7
• Subjects: CHAIRS FOR DENTISTRY; FUNERAL DEVICES; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; OPERATING TABLES OR CHAIRS; TRANSPORT OR ACCOMODATION FOR PATIENTS

PROBLEM TO BE SOLVED: To provide a control device of a motor-assisted wheelchair capable of securely detecting the abnormal operation of various sensors, especially a sensor for discriminating the direction of progress and a speed sensor, and improving the reliability of the operation of a driving force auxiliary device. SOLUTION: The control device logically judges, based on the signals from the sensor for discriminating the direction of progress and the speed sensor before or during the generation of auxiliary driving force, that the operation of the sensors is abnormal if the combination of the signals from the sensors is impossible when the operation is normal. Therefore, the abnormality of the sensors themselves can be securely monitored, and at the same time, the abnormality of the output signals can be also monitored. As a result, such measures as the stoppage of the auxiliary driving force can be taken early when any abnormality is detected, so that the reliability of the driving force auxiliary device of the motor-assisted wheelchair can be improved.