Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes control for power source of drive-means
Reexamination Certificate
1999-09-10
2001-08-07
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes control for power source of drive-means
C187S247000, C187S382000
Reexamination Certificate
active
06269911
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention concerns a system and a method for the control of the operation of elevator installations.
2. Discussion of the Prior Art
For control of operation, each elevator installation is associated with control equipment, to which sensors and activators, such as, for example, operating, actuating and setting elements of the elevator installation, are connected. A microprocessor of the local control equipment reads the input signals and switches the output signals according to the provided control program. The processing of the signals and the statements, such as, for example, number of storeys, type of drive and so forth, which describe the elevator installation and are stored in the control, takes place in a microprocessor in situ at the elevator installation.
Elevator installation systems, the elevators of which are, apart from a conventional control equipment, equipped additionally with a modem for remote monitoring, have become known from European reference EP 0 252 266 B1 and U.S. Pat. No. 5,450,478. For this remote monitoring of elevator installations, the respective control equipment of each individual elevator installation communicates under certain conditions, by means of a modem by way of the public telephone network, with a central maintenance or service location. The data exchange provided in that case consists primarily of predefined diagnostic data with respect to operating state and events of interference and alarm at all elevator installations connected with the central maintenance or service location.
According to build-up and manner of function, the actual data exchange specific to the installation is preceded by a data exchange procedure which on the one hand builds up the communication channel and on the other hand regulates the access or the access authorization to data of the elevator control.
Although elevator installation systems equipped in this manner with a control system individual to an elevator together with modem enlargement and central maintenance and service location have proved themselves, they are nevertheless expensive in terms of apparatus by reason of their constructional and functional properties explained so far, and only a narrow selection of predefined reports can be transmitted to the maintenance and service center. The upkeep and the maintenance of the individual elevator installations, which are connected with the maintenance and service center and sometimes lie far apart in location in the overall system, become cost-intensive. Thereby, long waiting times arise in the case of operational disturbances of an elevator installation or of an elevator until the cause of the disturbance is ascertained at the location and the disturbance is eliminated.
SUMMARY OF THE INVENTION
It is therefore the object of the present invention to provide an installation system of the initially named kind, which makes possible a reduction of the operating means, a simplification of upkeep and maintenance as well as an enlargement of the service performances.
Pursuant to this object, and others which will become apparent hereafter, one aspect of the present invention resides in an elevator installation system having at least one elevator installation which includes at least one elevator. Control means are provided for controlling operation of the elevator. A service center is provided spatially separate from the elevator installation for monitoring operation of the installation. Data transmission means are provided for exchanging data relevant to an elevator between the elevator installation and the service center. The data transmission means includes a first transmission device arranged in the service center, a second transmission device arranged at the elevator installation, and a data path that connects the first transmission device with the second transmission device. The control means is arranged in the service center and data relevant to control of the elevator is transmissible reciprocally between the control means and the elevator installation by the data transmission means.
Another aspect of the invention resides in a method for controlling the operation of an elevator installation system, in which method data relevant to control of the elevators is transmitted via the data transmission means to the control means, which is arranged spatially separate from the elevators. The transmitted data is processed in the control means into control commands for the elevators. The control commands are transmitted from the service center by way of the data transmission means to the elevators for actuation of setting members such as a drive engine or a display at the elevator installation.
The essence of the invention consists in a remote control of elevators. For this purpose, a central control apparatus is connected with all elevators of an installation system by way of data transmission equipment. Control data and parameters are communicated between each elevator installation and the central control center, wherein the status of the sensors is processed into a control signal in the latter.
Advantages resulting from this consist in that only a single central control apparatus is required for all elevators of the entire system and the conventional controls at the elevator or elevators become superfluous. Thereby, the expenditure in terms of apparatus as well as also the building space, which is required each time at the building, at the elevator installation is reduced.
A central maintenance of this technique is possible in the case of transmission of all installation data and installation parameters to the central control apparatus of the overall system. Time-intensive and wage-intensive settings and adaptations in situ at the elevator become superfluous. By modifications of the software of the central control apparatus, elevator functions are influenced not only for individual elevators, but also for several elevators. Furthermore, it is possible to image a complete actual state of the elevator installation in the center and to correct data, which concern authorizations of use, travel destinations and so forth, at a central point.
Beyond that, completely flew forms of installation monitoring, preventive maintenance and servicing are possible with the elevator installation system according to the invention. Apart from the control algorithms, a separate evaluation of the transmitters can take place for an analysis of wear and failure. Each component group can be analysed preventively and evaluated statistically. Information about the installation can be made available in desired form to the client (for example Internet pages in place of lobby PC).
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to an forming a part of the disclosure. For a better understanding of the invention, its operating advantages, and specific objects attained by its use, reference should be had to the drawing and descriptive matter in which there are illustrated and described preferred embodiments of the invention.
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Cohen & Pontani, Lieberman & Pavane
Inventio AG
Salata Jonathan
LandOfFree
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