Group control for elevators

In a group control for elevators each having an elevator cabin and containing:

• at least one storey call storage controllable by means of a storey call transmitter;
• cabin call storages for controlling by means of cabin call transmitters each cabin of the group;
• selectors operatively correlated with each elevator of the group indicating that storey at which the cabin still could stop;
• load measuring devices operatively correlated with each elevator cabin;
• a scanner device having at least one position for each storey;
• each elevator being provided with a computer device possessing at least one adder which forms from at least the distance between a considered storey and the selector position, from the number of intermediate stops to be expected within such distance based upon the prevailing cabin and allocated storey calls and from the momentary cabin load, a time-proportional sum corresponding to the servicing capability of a cabin of the group with respect to the considered storey;
• and
• at least one comparison device by means of which the cabin having the lowest servicing costs corresponding to the smallest previously computated loss time and therefore the optimum servicing capability can be allocated to the considered storey;
• the improvement which comprises:
• each elevator being provided with a computer device for counting the number of allocated storey calls and one of a number of cabin calls between a selector position and the considered storey;
• each elevator further being provided with a device which stores the momentary operating state of the elevator cabins;
• the computer device being provided with a subtractor unit for forming a difference from the number of said allocated storey calls multiplied by a number of passengers expected to enter the elevator cabin and the number of cabin calls multiplied by a number of passengers expected to exit from the elevator cabin;
• said difference and a momentary operating state of the elevator cabin being infeedable as a further summand to the adder of the computer device;
• the scanner device being connected with the computer device which for each position of the scanner device forms the sum corresponding to the servicing costs of a cabin with respect to a real or imaginary storey call of such position;
• a storage device connected with the computer device and the scanner device;
• said storage device can be filled by means of said scanner device;
• said storage device receiving the correlations of the momentarily most optimumly employable cabin having the lowest servicing costs for the relevant position of the scanner device;
• the subtractor unit of the computer device having an output;
• the adder of the computer device having an input and output;
• a switching element for connecting the output of the subtractor unit with the input of the adder;
• coincidence circuit means containing an OR-gate and for each scanner position an AND-gate;
• said scanner device having outputs;
• said OR-gate having inputs and an output;
• sand AND-gate having inputs and outputs;
• one input of said AND-gate being connected with the related scanner output and another input thereof being capable of having infed thereto a possibly present cabin call;
• the outputs of the AND-gates being connected with the inputs of the OR-gate;
• said switching element having a control circuit;
• the output of the OR-gate being connected with the control circuit of said switching element;
• and
• upon occurrence of a coincidence of cabin call and scanner position the output of the subtractor unit is disconnectable from the input of the adder, so that at the adder output there exclusively appears the external servicing costs.

In a group control for elevators each having an elevator cabin and containing:

• at least one storey call sorage controllable by means of a storey call transmitter;
• cabin call storages for controlling by means of cabin call transmitters each cabin of the group;
• selectors operatively correlated with each elevator of the group indicating that storey at which the cabin still could stop;
• load measuring devices operatively correlated with each elevator cabin;
• a scanner device having at least one position for each storey;
• each elevator being provided with a computer device possessing at least one adder which forms from at least the distance between a considered storey and the selector position, from the number of intermediate stops to be expected within such distance based upon the prevailing cabin and allocated storey calls and from the momentary cabin load, a time-proportional sum corresponding to the servicing capability of a cabin of the group with respect to the considered storey;
• and
• at least one comparison device by means of which the cabin having the lowest servicing costs corresponding to the smallest previously computated loss time and therefore the optimum servicing capability can be allocated to the considered storey;
• the improvement which comprises:
• each elevator being provided with a computer device for counting the number of allocated storey calls and one of a number of cabin calls between a selector position and the considered storey;
• each elevator further being provided with a device which stores the momentary operating state of the elevator cabins;
• the computer device being provided with a subtractor unit for forming a difference from the number of said allocated storey calls multiplied by a number of passengers expected to enter the elevator cabin and the number of cabin calls multiplied by a number of passengers expected to exit from the elevator cabin;
• said difference and a momentary operating state of the elevator cabin being infeedable as a further summand to the adder of the computer device;
• the scanner device being connected with the computer device which for each position of the scanner device forms the sum corresponding to the servicing costs of a cabin with respect to a real or imaginary storey call of such position;
• a storage device connected with the computer device and the scanner device;
• said storage device can be filled by means of said scanner device;
• said storage device receiving the correlations of the momentarily most optimumly employable cabin having the lowest servicing costs for the relevant position of the scanner device;
• said computer device possesses a further subtractor unit generating the internal servicing costs;
• and
• said further subtractor unit having an output forming an output of said computer device.

In a group control for elevators each having an elevator cabin and containing:

• at least one storey call storage controllable by means of a storey call transmitter;
• cabin call storages for controlling by means of cabin call transmitters each cabin of the group;
• selectors operatively correlated with each elevator of the group indicating that storey at which the cabin still could stop;
• load measuring devices operatively correlated with each elevator cabin;
• a scanner device having at least one position for each storey;
• each elevator being provided with a computer device possessing at least one adder which forms from at least the distance between a considered storey and the selector position, from the number of intermediate stops to be expected within such distance based upon the prevailing cabin and allocated storey calls and from the momentary cabin load, a time-proportional sum corresponding to the servicing capability of a cabin of the group with respect to the considered storey;
• and
• at least one comparison device by means of which the cabin having the lowest servicing costs corresponding to the smallest previously computated loss time and therefore the optimum servicing capability can be allocated to the considered storey;
• the improvement which comprises:
• each elevator being provided with a computer device for counting the number of allocated storey calls and one of a number of cabin calls between a selector position and the considered storey;
• each elevator further being provided with a device which stores the momentary operating state of the elevator cabins;
• the computer device being provided with a subtractor unit for forming a difference from the number of said allocated storey calls multiplied by a number of passengers expected to enter the elevator cabin and the number of cabin calls multiplied by a number of passengers expected to exit from the elevator cabin;
• said difference and a momentary operating state of the elevator cabin being infeedable as a further summand to the adder of the computer device;
• the scanner device being connected with the computer device which for each position of the scanner device forms the sum corresponding to the servicing costs of a cabin with respect to a real or imaginary storey call of such position;
• a storage device connected with the computer device and the scanner device;
• said storage device can be filled by means of said scanner device;
• said storage device receiving the correlations of the momentarily most optimumly employable cabin having the lowest servicing costs for the relevant position of the scanner device;
• the determination of the servicing costs in passenger seconds is accomplished by the computer device for a random cabin of the elevator group during each scanner position in accordance with the following equation:
• K.sub.N.sbsb.n =t.sub.V (P.sub.M +k.sub.1 .multidot.R.sub.E -K.sub.2 .multidot.R.sub.C)+k.sub.1 [m.multidot.t.sub.m +t.sub.v (R.sub.E +R.sub.C -R.sub.EC +Z).sub.]
• wherein:
• t.sub.V represents the delay time during an intermediate stop,
• P.sub.M represents the momentary load at the point in time of computation,
• R.sub.E represents the number of allocated storey calls between the selector and scanner position n,
• R.sub.C represents the number of cabin calls between the selector and scanner position n,
• k.sub.1 represents a contemplated number, determined as a function of the traffic conditions, of persons entering the cabin per storey call,
• k.sub.2 represents a contemplated number, determined as a function of the traffic conditions, of exiting passengers per cabin call,
• m represents the number of storey distances between the selector and scanner position n,
• t.sub.m represents the mean travel time per storey distance,
• R.sub.EC represents the number of coincidences of cabin calls and allocated storey calls between selector and scanner position,
• Z represents an addition dependent upon the operating state of the cabin,
• t.sub.v (P.sub.m +k.sub.1 .multidot.R.sub.E -k.sub.2 .multidot.R.sub.C) represents the loss times of internal servicing costs (K.sub.1) corresponding to passengers who apparently will be located in the cabin, which costs can arise during a stop at a storey designated by the scanner position n, and
• k.sub.1 [m.multidot.t.sub.m +t.sub.V (R.sub.E +R.sub.C -R.sub.EC +Z)] represents the loss times of contemplated waiting passengers in a storey designated by the scanner position n corresponding to the external servicing costs (K.sub.A);
• said comparison device for each elevator cabin containing two comparators defining a first comparator and a second comparator;
• each of said comparators having input means and output means;
• said input means of said first comparator being capable of receiving the total servicing costs and a reference signal;
• the input means of said second comparator being capable of receiving the internal servicing costs and a threshold signal;
• an AND-gate having inputs and an output;
• said comparison device having an output;
• said output means of said comparators being connected with said inputs of said AND-gate;
• the output of said AND-gate being connected with said output of said comparison device;
• and
• the output means of said comparators possessing the logic state "1" for that elevator cabin where the total servicing costs are lowest and the internal servicing costs are smaller than the threshold signal.

In a group control for elevators each having an elevator cabin and containing:

• at least one storey call storage controllable by means of a storey call transmitter;
• cabin call storages for contolling by means of cabin call transmitters each cabin of the group;
• selectors operatively correlated with each elevator of the group indicating that storey at which the cabin still could stop;
• load measuring devices operatively correlated with each elevator cabin;
• a scanner device having at least one position for each storey;
• each elevator being provided with a computer device possessing at least one adder which forms from at least the distance between a considered storey and the selector position, from the number of intermediate stops to be expected within such distance based upon the prevailing cabin and allocated storey calls and from the momentary cabin load, a time-proportional sum corresponding to the servicing capability of a cabin of the group with respect to the considered storey;
• and
• at least one comparison device by means of which the cabin having the lowest servicing costs corresponding to the smallest previously computated loss time and therefore the optimum servicing capability can be allocated to the considered storey;
• the improvement which comprises:
• each elevator being provided with a computer device for counting the number of allocated storey calls and one of a number of cabin calls between a selector position and the considered storey;
• each elevator further being provided with a device which stores the momentary operating state of the elevator cabins;
• the computer device being provided with a subtractor unit for forming a difference from the number of said allocated storey calls multiplied by a number of passengers expected to enter the elevator cabin and the number of cabin calls multiplied by a number of passengers expected to exit from the elevator cabin;
• said difference and a momentary operating state of the elevator cabin being infeedable as a further summand to the adder of the computer device;
• the scanner device being connected with the computer device which for each position of the scanner device forms the sum corresponding to the servicing costs of a cabin with respect to a real or imaginary storey call of such position;
• a storage device connected with the computer device and the scanner device;
• said storage device can be filled by means of said scanner device;
• said storage device receiving the correlations of the momentarily most optimumly employable cabin having the lowest servicing cost for the relevant position of the scanner device;
• the storage device containing the optimum correlation of the cabin and scanner position for each elevator contains a cost storage which can be filled during a revolution of a first scanner of the scanner device;
• the storage device further containing an allocation storage which can be filled during a revolution of a second scanner of the scanner device;
• the servicing costs computated during each scanner position being stored in the cost storages;
• in the allocation storages there can be stored the allocation instructions corresponding to the optimum correlations;
• a load storage in which there can be stored the cabin load determined in the related load measuring device and the load differences determined during each stop at a storey call;
• the contemplated number of entering passengers being determined at each stop at a storey call from the load differences of the momentary and preceding computated arithmetic means 1/2 (.DELTA.L+.DELTA.L');
• said load storage comprises two analogue storages;
• said analogue storages having inputs and outputs;
• each said load measuring device having an output;
• switch means for connecting the inputs of said analogue storages alternately with the output of said load measuring device;
• a subtractor having inputs and an output;
• the outputs of said analogue storages being connected with the inputs of said subtractor;
• two further analogue storages having inputs and outputs;
• further switch means for alternately connecting the output of the subtractor with the inputs of said two further analogue storages;
• an adder having input means and output means;
• the outputs of said two further analogue storages being connected with the input means of said adder;
• and
• said output means of said adder having appearing thereat a signal which indicates the contemplated number of entering passengers.

In a group control for elevators each having an elevator cabin and containing:

• at least one storey call storage controllable by means of a storey call transmitter;
• cabin call storages for controlling by means of cabin call transmitters each cabin of the group;
• selectors operatively correlated with each elevator of the group indicating that storey at which the cabin still could stop;
• load measuring devices operatively correlated with each elevator cabin;
• a scanner device having at least one position for each storey;
• each elevator being provided with a computer device possessing at least one adder which forms from at least the distance between a considered storey and the selector position, from the number of intermediate stops to be expected within such distance based upon the prevailing cabin and allocated storey calls and from the momentary cabin load, a time-proportional sum corresponding to the servicing capability of a cabin of the group with respect to the considered storey;
• and
• at least one comparison device by means of which the cabin having the lowest servicing costs corresponding to the smallest previously computated loss time and therefore the optimum servicing capability can be allocated to the considered storey;
• the improvement which comprises:
• each elevator being provided with a computer device for counting the number of allocated storey calls and one of a number of cabin calls between a selector position and the considered storey;
• each elevator further being provided with a device which stores the momentary operating state of the elevator cabins;
• the computer device being provided with a subtractor unit for forming a difference from the number of said allocated storey calls multiplied by a number of passengers expected to enter the elevator cabin and the number of cabin calls multiplied by a number of passengers expected to exit from the elevator cabin;
• said difference and a momentary operating state of the elevator cabin being infeedable as a further summand to the adder of the computer device;
• the scanner device being connected with the computer device which for each position of the scanner device forms the sum corresponding to the servicing cost of a cabin with respect to a real or imaginary storey call of such position;
• a storage device connected with the computer device and the scanner device;
• said storage device can be filled by means of said scanner device;
• said storage device receiving the correlations of the momentarily most optimumly employable cabin having the lowest servicing costs for the relevant position of the scanner device;
• the determination of the servicing costs in passenger seconds is accomplished by the computer device for a random cabin of the elevator group during each scanner position in accordance with the following equation:
• K.sub.N.sbsb.n =t.sub.V (P.sub.M +k.sub.1 .multidot.R.sub.E -K.sub.2 .multidot.R.sub.C)+k.sub.1 m.multidot.t.sub.m +t.sub.v (R.sub.E +R.sub.C -R.sub.EC +Z)]
• wherein:
• T.sub.V represents the delay time during an intermediate stop,
• P.sub.M represents the momentary load at the point in time of computation,
• R.sub.E represents the number of allocated storey calls between the selector and scanner position n,
• R.sub.C represents the number of cabin calls between the selector and scanner position n,
• k.sub.1 represents a contemplated number, determined as a function of the traffic conditions, of persons entering the cabin per storey call,
• k.sub.2 represents a contemplated number, determined as a function of the traffic conditions, of exiting passengers per cabin call,
• m represents the number of storey distances between the selector and scanner position n,
• t.sub.m represents the mean travel time per storey distance,
• R.sub.EC represents the number of coincidences of cabin calls and allocated storey calls between selector and scanner position,
• Z represents an addition dependent upon the operating state of the cabin,
• t.sub.v (P.sub.m +k.sub.1 .multidot.R.sub.E -k.sub.2 .multidot.R.sub.C) represents the loss times of internal servicing costs (K.sub.1) corresponding to passengers who apparently will be located in the cabin, which costs can arise during a stop at a storey designated by the scanner position n, and
• k.sub.1 [m.multidot.t.sub.m +t.sub.V (R.sub.E +R.sub.C -R.sub.EC +Z)] represents the loss times of contemplated waiting passengers in a storey designated by the scanner position n corresponding to the external servicing costs (K.sub.A);
• the subtractor unit of the computer device having an output;
• the adder of the computer device having an input and output;
• a switching element for connecting the output of the subtractor unit with the input of the adder;
• coincidence circuit means containing an OR-gate and for each scanner position an AND-gate;
• said scanner device having outputs;
• said OR-gate having inputs and an output;
• said AND-gate having inputs and outputs;
• one input of said AND-gate being connected with the related scanner output and another input thereof being capable of having infed thereto a possibly present cabin call;
• the outputs of the AND-gates being connected with the inputs of the OR-gate;
• said switching element having a control circuit;
• the output of the OR-gate being connected with the control circuit of said switching element;
• and
• upon occurrence of a coincidence of cabin call and scanner position the output of the subtractor unit is disconnectable from the input of the adder, so that at the adder output there exclusively appears the external servicing costs.

In a group control for elevators each having an elevator cabin and containing:

• at least one storey call storage controllable by means of a storey call transmitter;
• cabin call storages for controlling by means of cabin call transmitters each cabin of the group;
• selectors operatively correlated with each elevator of the group indicating that storey at which the cabin still could stop;
• load measuring devices operatively correlated with each elevator cabin;
• a scanner device having at least one position for each storey;
• each elevator being provided with a computer device possessing at least one adder which forms from at least the distance between a considered storey and the selector position, from the number of intermediate stops to be expected within such distance based upon the prevailing cabin and allocated storey calls and from the momentary cabin load, a time-proportional sum corresponding to the servicing capability of a cabin of the group with respect to the considered storey;
• and
• at least one comparison device by means of which the cabin having the lowest servicing costs corresponding to the smallest previously computated loss time and therefore the optimum servicing capability can be allocated to the considered storey;
• the improvement which comprises:
• each elevator being provided with a computer device for counting the number of allocated storey calls and one of a number of cabin calls between a selector position and the considered storey;
• each elevator further being provided with a device which stores the momentary operating state of the elevator cabins;
• the computer device being provided with a subtractor unit for forming a difference from the number of said allocated storey calls multiplied by a number of passengers expected to enter the elevator cabin and the number of cabin calls multiplied by a number of passengers expected to exit from the elevator cabin;
• said difference and a momentary operating state of the elevator cabin being infeedable as a further summand to the adder of the computer device;
• the scanner device being connected with the computer device which for each position of the scanner device forms the sum corresponding to the servicing costs of a cabin with respect to a real or imaginary storey call of such position;
• a storage device connected with the computer device and the scanner device;
• said storage device can be filled by means of said scanner device;
• said storage device receiving the correlations of the momentarily most optimumly employable cabin having the lowest servicing costs for the relevant position of the scanner device;
• the determination of the servicing costs in passenger seconds is accomplished by the computer device for a random cabin of the elevator group during each scanner position in accordance with the following equation:
• K.sub.N.sbsb.n =t.sub.V (P.sub.M +k.sub.1 .multidot.R.sub.E -K.sub.2 .multidot.R.sub.C)+k.sub.1 [m.multidot.t.sub.m +t.sub.v (R.sub.E +R.sub.C -R.sub.EC +Z)]
• wherein:
• t.sub.V represents the delay time during an intermediate stop,
• P.sub.M represents the momentary load at the point in time of computation,
• R.sub.E represents the number of allocated storey calls between the selector and scanner position n,
• R.sub.C represents the number of cabin calls between the selector and scanner position n,
• k.sub.1 represents a contemplated number, determined as a function of the traffic conditions, of persons entering the cabin per storey call,
• k.sub.2 represents a contemplated number, determined as a function of the traffic conditions, of exiting passengers per cabin call,
• m represents the number of storey distances between the selector and scanner position n,
• t.sub.m represents the mean travel time per storey distance,
• R.sub.EC represents the number of coincidences of cabin calls and allocated storey calls between selector and scanner position,
• Z represents an addition dependent upon the operating state of the cabin,
• t.sub.v (P.sub.m +k.sub.1 .multidot.R.sub.E -k.sub.2 .multidot.R.sub.C) represents the loss times of internal servicing costs (K.sub.1) corresponding to passengers who apparently will be located in the cabin, which costs can arise during a stop at a storey designated by the scanner position n, and
• k.sub.1 [m.multidot.t.sub.m +t.sub.V (R.sub.E +R.sub.C -R.sub.EC +Z)] represents the loss times of contemplated waiting passengers in a storey designated by the scanner position n corresponding to the external servicing costs (K.sub.A);
• said computer device possesses a further subtractor unit generating the internal servicing costs;
• and
• said further subtractor unit having an output forming an output of said computer device.

In a group control for elevators each having an elevator cabin and containing:

• at least one storey call storage controllable by means of a storey call transmitter;
• cabin call storages for controlling by means of cabin call transmitters each cabin of the group;
• selectors operatively correlated with each elevator of the group indicating that storey at which the cabin still could stop;
• load measuring devices operatively correlated with each elevator cabin;
• a scanner device having at least one position for each storey;
• each elevator being provided with a computer device possessing at least one adder which forms from at least the distance between a considered storey and the selector position, from the number of intermediate stops to be expected within such distance based upon the prevailing cabin and allocated storey calls and from the momentary cabin load, a time-proportional sum corresponding to the servicing capability of a cabin of the group with respect to the considered storey;
• and
• at least one comparison device by means of which the cabin having the lowest servicing costs corresponding to the smallest previously computated loss time and therefore the optimum servicing capability can be allocated to the considered storey;
• the improvement which comprises:
• each elevator being provided with a computer device for counting the number of allocated storey calls and one of a number of cabin calls between a selector position and the considered storey;
• each elevator further being provided with a device which stores the momentary operating state of the elevator cabins;
• the computer device being provided with a subtractor unit for forming a difference from the number of said allocated storey calls multiplied by a number of passengers expected to enter the elevator cabin and the number of cabin calls multiplied by a number of passengers expected to exit from the elevator cabin;
• said difference and a momentary operating state of the elevator cabin being infeedable as a further summand to the adder of the computer device;
• the scanner device being connected with the computer device which for each position of the scanner device forms the sum corresponding to the servicing costs of a cabin with respect to a real or imaginary storey call of such position;
• a storage device connected with the computer device and the scanner device;
• said storage device can be filled by means of said scanner device;
• said storage device receiving the correlations of the momentarily most optimumly employable cabin having the lowest servicing costs for the relevant position of the scanner device;
• said storage device containing the optimum correlations between the elevator cabin and scanner position contains for each elevator an allocation storage which can be filled during a revolution of the scanner device;
• said allocation storage having inputs connected with said comparison device;
• comparison of the servicing costs of the elevator cabins occurring at each scanner position;
• the elevator cabin exhibiting the lowest servicing costs having stored in the allocation storage an allocation instruction corresponding to the optimum correlation;
• said comparison device for each elevator cabin containing two comparators defining a first comparator and a second comparator;
• each of said comparators having input means and output means;
• said input means of said first comparator being capable of receiving the total servicing costs and a reference signal;
• the input means of said second comparator being capable of receiving the internal servicing costs and a threshold signal;
• an AND-gate having inputs and an output;
• said comparison device having an output;
• said output means of said comparators being connected with said inputs of said AND-gate;
• the output of said AND-gate being connected with said output of said comparison device;
• and
• the output means of said comparators possessing the logic state "1" for that elevator where the total servicing costs are lowest and the internal servicing costs are smaller than the threshold signal.