Automatic door opening and closing system
First Claim
1. An automatic door opening and closing system in which a door is driven to open and close by means of door driving means, said system comprising:
- moving speed and direction computing means for computing speed and direction of movement of an object moving in a monitoring area outside a door enabling area set in the vicinity of the door through which said object may pass, the speed and direction of movement of the object being computed on the basis of changes in position of the object in said monitoring area; and
OPEN-DOOR signal output means for outputting an OPEN-DOOR signal for causing said door to be opened to said driving means in accordance with the result of the computation of the moving speed of the object made at the time when the object arrives at said door enabling area by said moving speed and direction computing means so that the door is fully opened when the object arrives at the door.
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Accused Products
Abstract
An automatic door opening and closing system opens a door by driving means when a person approaches the door. A monitoring area is set in the vicinity of the door, and moving speed and direction computing means computes the speed and direction of movement of the person on the basis of changes in position of the person in the monitoring area. When it is judged from the computed direction of movement that the person is moving toward the door, door enabling area selecting means selects one of plural door enabling areas suitable for the speed of movement of the object. Open-door command means provides an open-door signal, which causes the door to be opened at a fixed speed, to the driving means so that the door is fully opened upon the predicted arrival of the person at the door.
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Citations
10 Claims
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1. An automatic door opening and closing system in which a door is driven to open and close by means of door driving means, said system comprising:
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moving speed and direction computing means for computing speed and direction of movement of an object moving in a monitoring area outside a door enabling area set in the vicinity of the door through which said object may pass, the speed and direction of movement of the object being computed on the basis of changes in position of the object in said monitoring area; and OPEN-DOOR signal output means for outputting an OPEN-DOOR signal for causing said door to be opened to said driving means in accordance with the result of the computation of the moving speed of the object made at the time when the object arrives at said door enabling area by said moving speed and direction computing means so that the door is fully opened when the object arrives at the door.
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2. An automatic door opening and closing system in which a door is driven to open and close by means of door driving means, said system comprising:
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moving speed and direction computing means for computing speed and direction of movement of an object moving in a monitoring area set in the vicinity of the door through which said object may pass, the speed and direction of movement of the object being computed on the basis of changes in position of the object in said monitoring area; and signal output means for outputting a signal when it is determined that the object is moving toward the door based on the computation of the direction of movement of the object as computed in said moving speed and direction computing means; and OPEN-DOOR signal output means for setting at least one door enabling area when said signal output means outputs said signal, and outputting an OPEN-DOOR signal to cause said door to be opened to said door driving means in accordance with the moving speed of the object at the time when the object arrives at said door enabling area, as computed by said moving speed and direction computing means, so that said door can be fully opened upon the predicted arrival of the object at the door. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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10. An automatic door opening and closing system in which a door comprises a plurality of panels driven to open and close by associated driving means, said system comprising:
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moving speed and direction computing means for computing the direction and speed of an object based on changes in position of the object; predicting means utilizing the computation of the direction of movement of the object as computed in said moving direction computing means to predict the panel at which the object will arrive; and OPEN-DOOR signal output means for providing an OPEN-DOOR signal to said door driving means for said predicted panel predicted by said predicting means.
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Specification