Apparatus for the load dependent control of an elevator
First Claim
1. In an apparatus for controlling an elevator car including a selector device for generating a next floor signal representing the next floor at which the car could stop, a car load measuring device for generating a car load signal representing the number (L) of passengers in the car, a floor memoroy for generating a floor call signal representing floor calls to be serviced by the car, and control means for generating a stop signal to stop the elevator car, the control means comprising:
- floor load sensor means for generating a floor load signal representing the number (W) of passengers waiting at the next floor at which an associated elevator car could stop; and
means responsive to said floor load signal, a floor call signal for the next floor, a car load signal representing the number (L) of passengers in the associated elevator car, and a next floor signal for the associated elevator car for generating a stop signal when the sum of said floor load signal and the car load signal is less than or equal to a predetermined passenger load value (A), (L+W)≦
A, and for not generating said stop signal when said sum exceeds said load value, (L+W)>
A.
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Accused Products
Abstract
An elevator control system includes a car load measuring device for generating a car load signal representing the number of passengers in an elevator car and a floor load sensor for generating a signal representing the number of passengers waiting for an elevator at each floor. As the elevator car approaches the next floor at which it could stop, the floor load sensor generates its signal for that floor which is combined with the car load signal in an adder to generate a signal representing the total car load if the elevator car were to stop. The signal representing the total load is compared with a signal representing a maximum permissible car load and, if the maximum has not been exceeded, an enable signal is generated to one input of each of a plurality of logic circuits. The second input of each logic circuit is connected to a memory cell for a corresponding floor in a floor call memory and the third input of each logic circuit is connected to the corresponding floor in the floor selector device. Thus, when the signal representing the next floor at which the elevator car could stop corresponds to a stored floor call for that floor and the total potential load does not exceed the maximum permissible load, the corresponding logic circuit will generate a stop signal to cause the elevator to stop at the respective floor.
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Citations
20 Claims
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1. In an apparatus for controlling an elevator car including a selector device for generating a next floor signal representing the next floor at which the car could stop, a car load measuring device for generating a car load signal representing the number (L) of passengers in the car, a floor memoroy for generating a floor call signal representing floor calls to be serviced by the car, and control means for generating a stop signal to stop the elevator car, the control means comprising:
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floor load sensor means for generating a floor load signal representing the number (W) of passengers waiting at the next floor at which an associated elevator car could stop; and means responsive to said floor load signal, a floor call signal for the next floor, a car load signal representing the number (L) of passengers in the associated elevator car, and a next floor signal for the associated elevator car for generating a stop signal when the sum of said floor load signal and the car load signal is less than or equal to a predetermined passenger load value (A), (L+W)≦
A, and for not generating said stop signal when said sum exceeds said load value, (L+W)>
A. - View Dependent Claims (2, 3, 4)
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5. An apparatus for the load dependent control of an elevator comprising:
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a floor selector means for generating a next floor signal representing the next floor at which an associated elevator car could stop; a car load measuring device for generating a car load signal representing the number of passengers in the elevator car; a floor call memory for generating a floor call signal representing floor calls to be serviced by the elevator car; a floor load sensor means for generating a floor load signal representing the number of passengers waiting at the next floor at which the elevator car could stop; and means responsive to a floor call signal for said next floor, said next floor signal, said car load signal and said floor load signal for generating a stop signal to stop the elevator car at the next floor at which it could stop when the number of passengers in the elevator car and the number of passengers waiting at the next floor do not exceed a predetermined maximum number of passengers. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. In an elevator control including a floor selector for generating a next floor signal representing the next floor at which an elevator car could stop, a floor call memory for generating floor call signals representing requests for service at floors served by the elevator and a control means for generating a stop signal indicating that the car is to stop at a selected floor, the control means comprising:
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a car load measuring device for generating a car load signal representing the number of passengers in an elevator car; a floor load sensor means for generating a signal representing the number of passengers waiting for service at an associated floor; enable means responsive to said car load signal and said floor load signal for generating an enable signal when the total number of passengers represented by said car load signal and said floor load signal does not exceed a predetermined limit; and logic means responsive to said enable signal, a next floor signal from a floor selector associated with the elevator car, and a floor call signal for a floor corresponding to the floor of said next floor signal for generating said stop signal. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of controlling an elevator car based upon load comprising the steps of:
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(a) determining the number of passengers in the elevator car; (b) determining the next floor at which the elevator car could stop; (c) determining the number of passengers waiting at said next floor; (d) summing the number of passengers determined in steps (a) and (c); (e) comparing the sum obtained in step (d) with a predetermined value; and (f) generating a stop signal if the sum is less than or equal to said predetermined value and a floor call has been assigned to the elevator car for said next floor to stop the elevator car at said next floor. - View Dependent Claims (20)
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Specification