Abstract:
The invention concerns a method for solving an optimization task consisting of a plurality of sub-functions in the control of the operation of an apparatus. In the method, a set of a plurality of solution alternatives is generated and, according to the method, each sub-function is normalized. Normalized cost functions of the sub-functions are generated for each solution alternative for solving the optimization task, and based on the normalized cost functions of the sub-functions, a set of solutions to the optimization task is formed. From the set of solutions, the best solution is selected and the apparatus is controlled in accordance with the solution thus selected.
Abstract:
The invention relates to a condition monitoring method and a corresponding system for measuring the stopping accuracy of an elevator car. In the invention, a door zone is defined for each floor, a door zone detector is mounted on the elevator car, the elevator car is moved towards a destination floor, acceleration values of the elevator car are measured during its travel towards the destination floor by means of an acceleration sensor attached to the elevator car and the distance of the stopped elevator from the edge of the door zone is calculated on the basis of the measured acceleration values.
Abstract:
An elevator group control method for allocating landing calls and car calls to elevators so that the objectives set are met. In the method, a car-specific energy consumption file is generated to describe the energy consumption occurring during each trip of the elevator from each floor to each one of the other floors with different loads, and the calls are so allocated that the energy consumption resulting from serving all the active calls is minimized.
Abstract:
The present invention relates to an elevator condition monitoring system, which comprises at least a control unit (104) and a sensor arrangement (250) connected to the control unit, while the elevator comprises an elevator car (100), an elevator drive machine (109) and a control system (110) including the required safety circuit and actuators. The control unit of the condition monitoring system and the sensor arrangement connected to the control unit have been fitted in conjunction with the elevator car. The sensor arrangement comprises at least a sensor which measures the current of the safety circuit and is galvanically separated from the elevator safety circuit and connected to the safety circuit without interrupting the safety circuit wiring.
Abstract:
The invention relates to a method for allocating landing calls issued by passengers, in which method each passenger gives his/her destination floor via a call device. According to the invention, the call is allocated to an elevator car to serve the passenger via genetic allocation, wherein the floors of departure and destination of the passenger are recorded in alternative chromosomes, the required data regarding the passenger and elevator car being recorded in a gene in the chromosome, that, utilizing genetic methods, the best chromosome is selected, and that the passenger is directed into the elevator car selected, and that the selected elevator car is directed to serve the passenger in question.
Abstract:
Genetic procedure for the allocation of calls issued via the landing call devices of elevators comprised in a multi-deck elevator group, in which procedure a multi-deck elevator model is formed in which the limitations of and rules of behaviour for each elevator in the multi/deck elevator group and each car of each elevator are defined; a plurality of allocation options, i.e. chromosomes are formed, each of which contains a car data item and an elevator direction data item for each active landing call, and these data, i.e. genes, together define a car to serve each landing call as well as a collective control direction for the elevator; for each chromosome, a fitness function value is determined, one or more of the chromosomes are selected and altered in respect of at least one gene; fitness function values are determined for the new chromosomes; the process of altering the chromosomes, selecting chromosomes and determining fitness functions is continued until a termination criterion is met and, based on the fitness function values, the most suitable chromosome is selected and the calls are allocated to the elevators and cars in the elevator group in accordance with this solution.
Abstract:
In the present invention, a call to a destination floor is given in an elevator system by means of a call input device. Components of the call input device are a call input wheel, a display screen for displaying a floor indication both in an absolute form and in a proportional form in relation to the building and a push button for transmitting a floor selection to the elevator control system. The call input wheel can be implemented e.g. as a control wheel or roller rotatable in a horizontal or vertical direction. In an embodiment of the present invention, the push button is integrated with the call input wheel. The rate of change of the floor indication on the display depends e.g. on the angular speed of the rotation of the call input wheel. A loudspeaker can be connected to the call input device to give a sound signal when the floor indication on the display changes. The loudspeaker can also be used to tell the selected destination floor to blind elevator users by means of a speech machine. The call input device can be placed in the elevator lobby outside the elevator car, but it can also be placed inside the elevator car.
Abstract:
In the present invention, a call to a destination floor is given in an elevator system by means of a call input device. Components of the call input device are a call input wheel, a display screen for displaying a floor indication both in an absolute form and in a proportional form in relation to the building and a push button for transmitting a floor selection to the elevator control system. The call input wheel can be implemented e.g. as a control wheel or roller rotatable in a horizontal or vertical direction. In an embodiment of the present invention, the push button is integrated with the call input wheel. The rate of change of the floor indication on the display depends e.g. on the angular speed of the rotation of the call input wheel. A loudspeaker can be connected to the call input device to give a sound signal when the floor indication on the display changes. The loudspeaker can also be used to tell the selected destination floor to blind elevator users by means of a speech machine. The call input device can be placed in the elevator lobby outside the elevator car, but it can also be placed inside the elevator car.
Abstract:
The method of the present invention can be used to monitor and predict the condition of an automatic door of an elevator or more generally an automatic door in a building. In the method, the acceleration or velocity of the door is measured and a dynamic model of the door is created. Using the model, estimated values of acceleration or velocity of the door can be calculated as a function of unknown parameters. One of the unknown parameters is the frictional force acting on the door during movement. By utilizing the estimated acceleration or velocity as well as measured acceleration or velocity values, an error function is obtained, whose minimum value is found using an optimizer. The unknown parameters corresponding to the minimum value indicate the current condition of the door. On the basis of earlier measurement results, it is additionally possible to predict a point of time when a failure is likely to occur in the operation of the door. In addition to unknown force parameters, it is possible, using a genetic algorithm, to determine the operational condition of a door closing device as well.
Abstract:
The present invention deals with a method and an apparatus for the input call needed in an elevator system by means of a wireless call input device. The call input device may be a device provided with a display and a keypad, designed especially for this use. In a preferred embodiment, the call input device is the user's mobile telephone and the system utilizes technology consistent with the Bluetooth standard. RFID technology or the use of bar codes is also possible. For the user a profile is created which contains the user's name, statistical information regarding the destination floors most frequently selected by the user, and possible additional services. The user can input a call from an elevator lobby before arriving to the elevator. After the system has allocated the most suitable elevator to the user, corresponding information is presented on the display of the call input device. This information can be accompanied by guidance information and information about an estimated waiting time. The destination floor alternatives can also be programmed to the call input device by the user him/herself. Additional services can be provided to the user of the call system and to other parties working in the building by connecting the control system to the Internet e.g. via an embedded mobile telephone.