Automatic door sensor and automatic door system equipped with this sensor
First Claim
1. An automatic door sensor operable to transmit a door open signal to an automatic door opening/closing mechanism so as to open an automatic door when an object enters a prescribed area around a doorway opening of the automatic door, and to discontinue transmission of the door open signal to the automatic door opening/closing mechanism so as to close the automatic door by a first closing action when the object leaves the prescribed area,wherein said sensor comprises an open/close controller operable to transmit a presence detection signal to the automatic door opening/closing mechanism when the object remains stationary within the prescribed area for a certain period of time so as to close the automatic door by a second closing action which is different from the first closing action.
1 Assignment
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Accused Products
Abstract
An automatic door system capable of distinguishing between a door closing action for when an object leaves a prescribed area, which results from a “signal discontinuation due to the exit of an object”, and a door closing action for when an object remains stationary within the area for a certain period of time, which results from a “forced signal discontinuation in the presence of a stationary object”. Regarding the latter case, the automatic door system protects a person who stops in the area by setting the door to close at a low speed and/or issuing a vocal warning. The door closing action of the automatic door system can thereby reduce the risk of hitting the person with the door.
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Citations
25 Claims
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1. An automatic door sensor operable to transmit a door open signal to an automatic door opening/closing mechanism so as to open an automatic door when an object enters a prescribed area around a doorway opening of the automatic door, and to discontinue transmission of the door open signal to the automatic door opening/closing mechanism so as to close the automatic door by a first closing action when the object leaves the prescribed area,
wherein said sensor comprises an open/close controller operable to transmit a presence detection signal to the automatic door opening/closing mechanism when the object remains stationary within the prescribed area for a certain period of time so as to close the automatic door by a second closing action which is different from the first closing action.
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9. An automatic door sensor operable to control an automatic door opening/closing mechanism to open/close an automatic door based on a presence of an object in a prescribed area around a doorway opening of the automatic door, said automatic door sensor comprising an open/close controller which is operable to:
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transmit a door open signal to the automatic door opening/closing mechanism so as to control the automatic door opening/closing mechanism to open the automatic door when the object enters the prescribed area;
discontinue transmission of the door open signal to the automatic door opening/closing mechanism so as to control the automatic door opening/closing mechanism to close the automatic door by a first closing action when the object leaves the prescribed area; and
transmit a presence detection signal to the automatic door opening/closing mechanism so as to control the automatic door opening/closing mechanism to close the automatic door by a second closing action which is different from the first closing action when the object remains stationary within the prescribed area for a certain period of time. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An automatic door sensor operable to control an automatic door opening/closing mechanism so as to open/close an automatic door based on a presence of an object in a prescribed area around a doorway opening of the automatic door, said automatic door sensor comprising:
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an infrared sensor operable to emit and receive infrared signals in the prescribed area so as to detect whether the object is present in the prescribed area; and
an open/close controller operable to transmit a door open signal to the automatic door opening/closing mechanism when the object enters the prescribed area, to discontinue transmission of the door open signal to the automatic door opening/closing mechanism when the object leaves the prescribed area, and to transmit a presence detection signal to the automatic door opening/closing mechanism when the object remains stationary within the prescribed area for a certain period of time;
wherein said open/close controller is operable to control the automatic door opening/closing mechanism to open the automatic door by transmitting the door open signal to the automatic door opening/closing mechanism, to control the automatic door opening/closing mechanism to close the automatic door by a first closing action by discontinuing transmission of the door open signal to the automatic door opening/closing mechanism when the object leaves the prescribed area, and to control the automatic door opening/closing mechanism to close the automatic door by a second closing action which is different from the first closing action by transmitting the presence detection signal to the automatic door opening/closing mechanism when the object remains stationary within the prescribed area for the certain period of time. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification