Vehicle door control apparatus
First Claim
Patent Images
1. In door control apparatus operative with at least one passenger vehicle door having a drive motor and responsive to a door control signal for providing movement of said door in one of an opening direction and a closing direction, the combination of:
- first means responsive to said door control signal for providing a first time period after which an enable signal is provided,second means responsive to the door movement for providing a speed signal having a frequency in accordance with the movement speed of said door,third means responsive to the enable signal and the speed signal for providing a first output signal having a frequency in accordance with the frequency of said speed signal, andfourth means responsive to the frequency of said first output signal for providing a second output signal to control the operation of said doors in response to a change in the frequency of the first output signal indicating a predetermined change in the speed of the drive motor.
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Accused Products
Abstract
A passenger vehicle door obstruction sensing control apparatus includes a first time period that begins when a door close command signal is received and the vehicle doors start to close. This first time period permits the door drive motor to reach a steady-state speed of operation. Then a motor speed responsive signal is provided to a speed reduction sensing apparatus for opening the doors for a second time period whenever the motor speed reduces below a predetermined limit.
25 Citations
6 Claims
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1. In door control apparatus operative with at least one passenger vehicle door having a drive motor and responsive to a door control signal for providing movement of said door in one of an opening direction and a closing direction, the combination of:
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first means responsive to said door control signal for providing a first time period after which an enable signal is provided, second means responsive to the door movement for providing a speed signal having a frequency in accordance with the movement speed of said door, third means responsive to the enable signal and the speed signal for providing a first output signal having a frequency in accordance with the frequency of said speed signal, and fourth means responsive to the frequency of said first output signal for providing a second output signal to control the operation of said doors in response to a change in the frequency of the first output signal indicating a predetermined change in the speed of the drive motor. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification