Headrest proportional control for motorized wheelchair
First Claim
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1. A head controlled mechanism and system for the proportional control of a driven device comprising:
- a. switch control circuit means having a plurality of switch means and a two part movable headrest means for engaging the head of an operator for actuating said switch means to provide output voltage signals in response to movement of said movable headrest,b. control circuit means coupled to said switch control circuit means for producing a variable duty cycle output control signal proportional to the voltage signals received from said switch control circuit means,c. a driven device coupled to said control circuit means and being driven in a direction and at speeds controlled by movement of said movable headrest means.
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Abstract
A head controlled mechanism for the proportional control of a driven devi A mechanism is provided whereby a control signal is generated proportional to the movement of the head of an operator to control the speed and direction of the driven device.
44 Citations
12 Claims
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1. A head controlled mechanism and system for the proportional control of a driven device comprising:
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a. switch control circuit means having a plurality of switch means and a two part movable headrest means for engaging the head of an operator for actuating said switch means to provide output voltage signals in response to movement of said movable headrest, b. control circuit means coupled to said switch control circuit means for producing a variable duty cycle output control signal proportional to the voltage signals received from said switch control circuit means, c. a driven device coupled to said control circuit means and being driven in a direction and at speeds controlled by movement of said movable headrest means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A controlled mechanism and system for the proportional control of a driven device comprising:
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a. switch control means having a plurality of switch means and switch actuating means adapted for movement by an operator for providing a plurality of output voltage signals of equal value when more than one of said switch means is actuated, b. control circuit means coupled to said switch control circuit means for producing a variable duty cycle output control signal proportional to the number of output voltage signals received from said switch control circuit means, c. a driven device coupled to said control circuit means and being driven in a direction and at speeds controlled by said variable duty cycle control signal.
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10. A head controlled mechanism and system for the proportional control of a driven device comprising:
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a. switch control circuit means having a plurality of switch means and a movable headrest means for engaging the head of an operator for actuating said switch means to provide output voltage signals in response to movement of said movable headrest, b. control circuit means coupled to said switch control circuit means for producing a variable duty cycle output control signal proportional to the voltage signals received from said switch control circuit means, c. a driven device coupled to said control circuit means and being driven in a direction and at speeds controlled by movement of said movable headrest means.
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11. A head controlled mechanism and system for the proportional control of a driven device comprising:
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a. a movable headrest control means for providing control voltage signals proportional to movement of said headrest, b. control circuit means coupled to said headrest control means for producing a variable duty cycle output control signal proportional to the voltage signals received from said headrest control means, c. a driven device coupled to said control circuit means and being driven in a direction and at speeds controlled by movement of said headrest.
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12. A head controlled mechanism for providing a plurality of control signals comprising:
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a. a movable headrest for engaging the head of an operator, b. control signal generating means coupled to said headrest and being responsive to movement of said headrest for generating output control signals.
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Specification