Elevator door control apparatus
First Claim
1. An elevator door control apparatus comprising:
- at least one door safety device for detecting whether elevator doors are safe;
an elevator control circuit for outputting a door-open/close command; and
a door control circuit for controlling the opening/closing of doors on the basis of a door-open/close command issued from the elevator control circuit and for outputting a door reversal request to the elevator control circuit upon reception of the operation signal of the door safety device while the doors are being closed on the basis of a door-close command speed pattern from the elevator control circuit, for switching the door speed command pattern to a brake pattern from the door-close command speed pattern, for thereafter switching the door speed command pattern from the brake pattern to the door-open command speed pattern when the door-open command is received from the elevator control circuit and for generating a constant speed door-close command speed pattern when a door-open command is not generated by said elevator control circuit within a predetermined time period beginning when the door speed command pattern is changed from the door-close command speed pattern to the brake pattern and ending when the doors reach a predetermined low speed.
1 Assignment
0 Petitions
Accused Products
Abstract
An elevator door control apparatus includes at least one door safety device for detecting whether elevator doors are safe; an elevator control circuit for outputting a door-open/close command; and a door control circuit for controlling the opening/closing of doors on the basis of a door-open/close command issued from the elevator control circuit and for outputting a door reversal request to the elevator control circuit on the basis of the operation signal of the door safety device, wherein the door control circuit outputs a door reversal request to the elevator control circuit upon reception of the operation signal of the door safety device while the doors are being closed on the basis of a door-close command from the elevator control circuit, switches the door speed command pattern to a brake pattern from the door-close command speed pattern and thereafter switches the door speed command pattern from the brake pattern to the door-open command speed pattern when the door-open command is received from the elevator control circuit instead of the door-close command.
20 Citations
4 Claims
-
1. An elevator door control apparatus comprising:
-
at least one door safety device for detecting whether elevator doors are safe; an elevator control circuit for outputting a door-open/close command; and a door control circuit for controlling the opening/closing of doors on the basis of a door-open/close command issued from the elevator control circuit and for outputting a door reversal request to the elevator control circuit upon reception of the operation signal of the door safety device while the doors are being closed on the basis of a door-close command speed pattern from the elevator control circuit, for switching the door speed command pattern to a brake pattern from the door-close command speed pattern, for thereafter switching the door speed command pattern from the brake pattern to the door-open command speed pattern when the door-open command is received from the elevator control circuit and for generating a constant speed door-close command speed pattern when a door-open command is not generated by said elevator control circuit within a predetermined time period beginning when the door speed command pattern is changed from the door-close command speed pattern to the brake pattern and ending when the doors reach a predetermined low speed. - View Dependent Claims (2, 3)
-
-
4. An elevator door control apparatus comprising:
-
at least one door safety device for generating an operation signal; an elevator control circuit for outputting a door-open/close command; and means for controlling the opening/closing of doors on the basis of a door-open/close command issued from the elevator control circuit and for outputting a door reversal request to the elevator control circuit upon reception of the operation signal from said door safety device, said means for controlling the opening/closing of doors generating a constant speed door-close command speed pattern when a door open command is not generated by said elevator control circuit within a predetermined time and switching door-close command pattern to a brake pattern upon detection of the operation signal wherein the predetermined time is defined as the time period between which the door-close speed command pattern is switched to the brake pattern and the doors reach a predetermined low speed.
-
Specification